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lastKnownFileType = sourcecode.c.h; path = ASButtonNode.h; sourceTree = ""; }; DECBD6E61BE56E1900CF4905 /* ASButtonNode.mm */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.objcpp; path = ASButtonNode.mm; sourceTree = ""; }; EFA731F0396842FF8AB635EE /* libPods-AsyncDisplayKitTests.a */ = {isa = PBXFileReference; explicitFileType = archive.ar; includeInIndex = 0; path = "libPods-AsyncDisplayKitTests.a"; sourceTree = BUILT_PRODUCTS_DIR; }; @@ -836,6 +880,7 @@ 058D09E1195D050800B7D73C /* Details */, 058D0A01195D050800B7D73C /* Private */, AC6456051B0A333200CF11B8 /* Layout */, + 257754661BED245B00737CA5 /* TextKit */, 058D09B2195D04C000B7D73C /* Supporting Files */, ); path = AsyncDisplayKit; @@ -881,9 +926,9 @@ 052EE0651A159FEF002C6279 /* ASMultiplexImageNodeTests.m */, 058D0A32195D057000B7D73C /* ASMutableAttributedStringBuilderTests.m */, 3C9C128419E616EF00E942A0 /* ASTableViewTests.m */, - 058D0A33195D057000B7D73C /* ASTextNodeCoreTextAdditionsTests.m */, - 058D0A34195D057000B7D73C /* ASTextNodeRendererTests.m */, - 058D0A35195D057000B7D73C /* ASTextNodeShadowerTests.m */, + 058D0A33195D057000B7D73C /* ASTextKitCoreTextAdditionsTests.m */, + 254C6B511BF8FE6D003EC431 /* ASTextKitTruncationTests.mm */, + 254C6B531BF8FF2A003EC431 /* ASTextKitTests.mm */, 058D0A36195D057000B7D73C /* ASTextNodeTests.m */, 058D0A37195D057000B7D73C /* ASTextNodeWordKernerTests.mm */, 058D09C6195D04C000B7D73C /* Supporting Files */, @@ -944,25 +989,14 @@ 055F1A3619ABD413004DAFF1 /* ASRangeController.h */, 055F1A3719ABD413004DAFF1 /* ASRangeController.mm */, 292C599C1A956527007E5DD6 /* ASRangeHandler.h */, - DE6D9E301C0AD9ED001A1DD3 /* ASRangeHandlerVisible.h */, - DE6D9E311C0AD9ED001A1DD3 /* ASRangeHandlerVisible.mm */, + 258FF4251C0D152600A83844 /* ASRangeHandlerVisible.h */, + 258FF4261C0D152600A83844 /* ASRangeHandlerVisible.mm */, 292C599A1A956527007E5DD6 /* ASRangeHandlerPreload.h */, 292C599B1A956527007E5DD6 /* ASRangeHandlerPreload.mm */, 292C599D1A956527007E5DD6 /* ASRangeHandlerRender.h */, 292C599E1A956527007E5DD6 /* ASRangeHandlerRender.mm */, 296A0A311A951715005ACEAA /* ASScrollDirection.h */, 205F0E111B371BD7007741D0 /* ASScrollDirection.m */, - 058D09EA195D050800B7D73C /* ASTextNodeCoreTextAdditions.h */, - 058D09EB195D050800B7D73C /* ASTextNodeCoreTextAdditions.m */, - 058D09EC195D050800B7D73C /* ASTextNodeRenderer.h */, - 058D09ED195D050800B7D73C /* ASTextNodeRenderer.mm */, - 058D09EE195D050800B7D73C /* ASTextNodeShadower.h */, - 058D09EF195D050800B7D73C /* ASTextNodeShadower.m */, - 058D09F0195D050800B7D73C /* ASTextNodeTextKitHelpers.h */, - 058D09F1195D050800B7D73C /* ASTextNodeTextKitHelpers.mm */, - 058D09F2195D050800B7D73C /* ASTextNodeTypes.h */, - 058D09F3195D050800B7D73C /* ASTextNodeWordKerner.h */, - 058D09F4195D050800B7D73C /* ASTextNodeWordKerner.m */, 058D0A12195D050800B7D73C /* ASThread.h */, 205F0E1F1B376416007741D0 /* CGRect+ASConvenience.h */, 205F0E201B376416007741D0 /* CGRect+ASConvenience.m */, @@ -972,7 +1006,6 @@ 205F0E0D1B371875007741D0 /* UICollectionViewLayout+ASConvenience.h */, 205F0E0E1B371875007741D0 /* UICollectionViewLayout+ASConvenience.m */, 058D09FF195D050800B7D73C /* UIView+ASConvenience.h */, - 058D0A00195D050800B7D73C /* UIView+ASConvenience.m */, ); path = Details; sourceTree = ""; @@ -1044,6 +1077,39 @@ path = Base; sourceTree = SOURCE_ROOT; }; + 257754661BED245B00737CA5 /* TextKit */ = { + isa = PBXGroup; + children = ( + 257754B71BEE458D00737CA5 /* ASTextKitHelpers.mm */, + 257754BB1BEE458E00737CA5 /* ASTextKitCoreTextAdditions.h */, + 257754B81BEE458E00737CA5 /* ASTextKitCoreTextAdditions.m */, + 257754B91BEE458E00737CA5 /* ASTextNodeWordKerner.h */, + 257754BA1BEE458E00737CA5 /* ASTextKitHelpers.h */, + 257754BC1BEE458E00737CA5 /* ASTextNodeTypes.h */, + 257754BD1BEE458E00737CA5 /* ASTextNodeWordKerner.m */, + 257754941BEE44CD00737CA5 /* ASTextKitAttributes.mm */, + 257754951BEE44CD00737CA5 /* ASTextKitAttributes.h */, + 257754961BEE44CD00737CA5 /* ASTextKitContext.h */, + 257754971BEE44CD00737CA5 /* ASTextKitContext.mm */, + 257754981BEE44CD00737CA5 /* ASTextKitEntityAttribute.h */, + 257754991BEE44CD00737CA5 /* ASTextKitEntityAttribute.m */, + 257754931BEE44CD00737CA5 /* ASTextKitRenderer.h */, + 2577549A1BEE44CD00737CA5 /* ASTextKitRenderer.mm */, + 2577549B1BEE44CD00737CA5 /* ASTextKitRenderer+Positioning.h */, + 2577549C1BEE44CD00737CA5 /* ASTextKitRenderer+Positioning.mm */, + 2577549D1BEE44CD00737CA5 /* ASTextKitRenderer+TextChecking.h */, + 2577549E1BEE44CD00737CA5 /* ASTextKitRenderer+TextChecking.mm */, + 2577549F1BEE44CD00737CA5 /* ASTextKitShadower.h */, + 257754A01BEE44CD00737CA5 /* ASTextKitShadower.mm */, + 257754A11BEE44CD00737CA5 /* ASTextKitTailTruncater.h */, + 257754A21BEE44CD00737CA5 /* ASTextKitTailTruncater.mm */, + 257754A31BEE44CD00737CA5 /* ASTextKitTruncating.h */, + 257754A41BEE44CD00737CA5 /* ASEqualityHashHelpers.h */, + 2577548F1BED289A00737CA5 /* ASEqualityHashHelpers.mm */, + ); + name = TextKit; + sourceTree = ""; + }; AC6456051B0A333200CF11B8 /* Layout */ = { isa = PBXGroup; children = ( @@ -1117,6 +1183,7 @@ isa = PBXHeadersBuildPhase; buildActionMask = 2147483647; files = ( + 257754C21BEE458E00737CA5 /* ASTextKitCoreTextAdditions.h in Headers */, AC026B691BD57D6F00BBC17E /* ASChangeSetDataController.h in Headers */, 058D0A71195D05F800B7D73C /* _AS-objc-internal.h in Headers */, 058D0A68195D05EC00B7D73C /* _ASAsyncTransaction.h in Headers */, @@ -1129,6 +1196,7 @@ 058D0A74195D05F800B7D73C /* _ASPendingState.h in Headers */, 9C5586691BD549CB00B50E3A /* ASAsciiArtBoxCreator.h in Headers */, 058D0A76195D05F900B7D73C /* _ASScopeTimer.h in Headers */, + 257754B31BEE44CD00737CA5 /* ASTextKitTailTruncater.h in Headers */, 205F0E191B37339C007741D0 /* ASAbstractLayoutController.h in Headers */, 058D0A82195D060300B7D73C /* ASAssert.h in Headers */, 0516FA3C1A15563400B4EBED /* ASAvailability.h in Headers */, @@ -1142,32 +1210,37 @@ 055F1A3C19ABD43F004DAFF1 /* ASCellNode.h in Headers */, ACF6ED1C1B17843500DA7C62 /* ASCenterLayoutSpec.h in Headers */, 18C2ED7E1B9B7DE800F627B3 /* ASCollectionNode.h in Headers */, + 257754C01BEE458E00737CA5 /* ASTextNodeWordKerner.h in Headers */, AC3C4A511A1139C100143C57 /* ASCollectionView.h in Headers */, 205F0E1D1B373A2C007741D0 /* ASCollectionViewLayoutController.h in Headers */, AC3C4A541A113EEC00143C57 /* ASCollectionViewProtocols.h in Headers */, 058D0A49195D05CB00B7D73C /* ASControlNode+Subclasses.h in Headers */, 058D0A47195D05CB00B7D73C /* ASControlNode.h in Headers */, + 257754A51BEE44CD00737CA5 /* ASTextKitRenderer.h in Headers */, 464052201A3F83C40061C0BA /* ASDataController.h in Headers */, 05A6D05A19D0EB64002DD95E /* ASDealloc2MainObject.h in Headers */, ACF6ED201B17843500DA7C62 /* ASDimension.h in Headers */, 058D0A78195D05F900B7D73C /* ASDisplayNode+DebugTiming.h in Headers */, DECBD6E71BE56E1900CF4905 /* ASButtonNode.h in Headers */, 058D0A4C195D05CB00B7D73C /* ASDisplayNode+Subclasses.h in Headers */, + 258FF4271C0D152600A83844 /* ASRangeHandlerVisible.h in Headers */, 058D0A4A195D05CB00B7D73C /* ASDisplayNode.h in Headers */, 058D0A84195D060300B7D73C /* ASDisplayNodeExtraIvars.h in Headers */, AC7A2C171BDE11DF0093FE1A /* ASTableViewInternal.h in Headers */, 058D0A4D195D05CB00B7D73C /* ASDisplayNodeExtras.h in Headers */, + 257754B11BEE44CD00737CA5 /* ASTextKitShadower.h in Headers */, 058D0A7B195D05F900B7D73C /* ASDisplayNodeInternal.h in Headers */, 0587F9BD1A7309ED00AFF0BA /* ASEditableTextNode.h in Headers */, 1950C4491A3BB5C1005C8279 /* ASEqualityHelpers.h in Headers */, + 257754A81BEE44CD00737CA5 /* ASTextKitContext.h in Headers */, 464052221A3F83C40061C0BA /* ASFlowLayoutController.h in Headers */, + 257754AF1BEE44CD00737CA5 /* ASTextKitRenderer+TextChecking.h in Headers */, 058D0A57195D05DC00B7D73C /* ASHighlightOverlayLayer.h in Headers */, 058D0A7C195D05F900B7D73C /* ASImageNode+CGExtras.h in Headers */, 058D0A4F195D05CB00B7D73C /* ASImageNode.h in Headers */, 05F20AA41A15733C00DCA68A /* ASImageProtocols.h in Headers */, 430E7C8F1B4C23F100697A4C /* ASIndexPath.h in Headers */, ACF6ED221B17843500DA7C62 /* ASInsetLayoutSpec.h in Headers */, - DE6D9E321C0AD9ED001A1DD3 /* ASRangeHandlerVisible.h in Headers */, ACF6ED4B1B17847A00DA7C62 /* ASInternalHelpers.h in Headers */, ACF6ED241B17843500DA7C62 /* ASLayout.h in Headers */, 251B8EFB1BBB3D690087C538 /* ASDataController+Subclasses.h in Headers */, @@ -1178,10 +1251,12 @@ 9C5FA3511B8F6ADF00A62714 /* ASLayoutOptions.h in Headers */, 9C65A72A1BA8EA4D0084DA91 /* ASLayoutOptionsPrivate.h in Headers */, 292C599F1A956527007E5DD6 /* ASLayoutRangeType.h in Headers */, + 257754B61BEE44CD00737CA5 /* ASEqualityHashHelpers.h in Headers */, ACF6ED261B17843500DA7C62 /* ASLayoutSpec.h in Headers */, ACF6ED4D1B17847A00DA7C62 /* ASLayoutSpecUtilities.h in Headers */, AC026B6F1BD57DBF00BBC17E /* _ASHierarchyChangeSet.h in Headers */, 0516FA3D1A15563400B4EBED /* ASLog.h in Headers */, + 257754AA1BEE44CD00737CA5 /* ASTextKitEntityAttribute.h in Headers */, 0442850D1BAA64EC00D16268 /* ASMultidimensionalArrayUtils.h in Headers */, 0516FA401A1563D200B4EBED /* ASMultiplexImageNode.h in Headers */, 058D0A59195D05DC00B7D73C /* ASMutableAttributedStringBuilder.h in Headers */, @@ -1197,28 +1272,27 @@ D785F6621A74327E00291744 /* ASScrollNode.h in Headers */, 058D0A7F195D05F900B7D73C /* ASSentinel.h in Headers */, 9C8221951BA237B80037F19A /* ASStackBaselinePositionedLayout.h in Headers */, + 257754C31BEE458E00737CA5 /* ASTextNodeTypes.h in Headers */, 9C49C36F1B853957000B0DD5 /* ASStackLayoutable.h in Headers */, AC21EC101B3D0BF600C8B19A /* ASStackLayoutDefines.h in Headers */, CC7FD9DE1BB5E962005CCB2B /* ASPhotosFrameworkImageRequest.h in Headers */, ACF6ED2F1B17843500DA7C62 /* ASStackLayoutSpec.h in Headers */, ACF6ED4E1B17847A00DA7C62 /* ASStackLayoutSpecUtilities.h in Headers */, + 257754B51BEE44CD00737CA5 /* ASTextKitTruncating.h in Headers */, ACF6ED4F1B17847A00DA7C62 /* ASStackPositionedLayout.h in Headers */, + 257754A71BEE44CD00737CA5 /* ASTextKitAttributes.h in Headers */, ACF6ED511B17847A00DA7C62 /* ASStackUnpositionedLayout.h in Headers */, 9C6BB3B21B8CC9C200F13F52 /* ASStaticLayoutable.h in Headers */, ACF6ED311B17843500DA7C62 /* ASStaticLayoutSpec.h in Headers */, 055F1A3419ABD3E3004DAFF1 /* ASTableView.h in Headers */, 251B8EF71BBB3D690087C538 /* ASCollectionDataController.h in Headers */, + 257754C11BEE458E00737CA5 /* ASTextKitHelpers.h in Headers */, 0574D5E219C110940097DC25 /* ASTableViewProtocols.h in Headers */, 058D0A51195D05CB00B7D73C /* ASTextNode.h in Headers */, - 058D0A5B195D05DC00B7D73C /* ASTextNodeCoreTextAdditions.h in Headers */, - 058D0A5D195D05DC00B7D73C /* ASTextNodeRenderer.h in Headers */, - 058D0A5F195D05DC00B7D73C /* ASTextNodeShadower.h in Headers */, - 058D0A61195D05DC00B7D73C /* ASTextNodeTextKitHelpers.h in Headers */, - 058D0A63195D05DC00B7D73C /* ASTextNodeTypes.h in Headers */, - 058D0A64195D05DC00B7D73C /* ASTextNodeWordKerner.h in Headers */, 058D0A81195D05F900B7D73C /* ASThread.h in Headers */, ACC945A91BA9E7A0005E1FB8 /* ASViewController.h in Headers */, 6BDC61F61979037800E50D21 /* AsyncDisplayKit.h in Headers */, + 257754AD1BEE44CD00737CA5 /* ASTextKitRenderer+Positioning.h in Headers */, 205F0E211B376416007741D0 /* CGRect+ASConvenience.h in Headers */, 058D0A66195D05DC00B7D73C /* NSMutableAttributedString+TextKitAdditions.h in Headers */, 205F0E0F1B371875007741D0 /* UICollectionViewLayout+ASConvenience.h in Headers */, @@ -1231,10 +1305,12 @@ buildActionMask = 2147483647; files = ( AC026B6A1BD57D6F00BBC17E /* ASChangeSetDataController.h in Headers */, + 25BAA16F1C0D18D2002747C7 /* ASRangeHandlerVisible.h in Headers */, B35062481B010EFD0018CF92 /* _AS-objc-internal.h in Headers */, B350623C1B010EFD0018CF92 /* _ASAsyncTransaction.h in Headers */, B350623E1B010EFD0018CF92 /* _ASAsyncTransactionContainer+Private.h in Headers */, B350623F1B010EFD0018CF92 /* _ASAsyncTransactionContainer.h in Headers */, + 254C6B7E1BF94DF4003EC431 /* ASTextKitTailTruncater.h in Headers */, B35062411B010EFD0018CF92 /* _ASAsyncTransactionGroup.h in Headers */, B35062491B010EFD0018CF92 /* _ASCoreAnimationExtras.h in Headers */, B350620F1B010EFD0018CF92 /* _ASDisplayLayer.h in Headers */, @@ -1242,9 +1318,14 @@ B350624B1B010EFD0018CF92 /* _ASPendingState.h in Headers */, 9C55866C1BD54A3000B50E3A /* ASAsciiArtBoxCreator.h in Headers */, B350624D1B010EFD0018CF92 /* _ASScopeTimer.h in Headers */, + 254C6B771BF94DF4003EC431 /* ASTextKitAttributes.h in Headers */, 509E68611B3AEDA0009B9150 /* ASAbstractLayoutController.h in Headers */, B35062571B010F070018CF92 /* ASAssert.h in Headers */, + 254C6B7D1BF94DF4003EC431 /* ASTextKitShadower.h in Headers */, B35062581B010F070018CF92 /* ASAvailability.h in Headers */, + 254C6B731BF94DF4003EC431 /* ASTextKitCoreTextAdditions.h in Headers */, + 254C6B7A1BF94DF4003EC431 /* ASTextKitRenderer.h in Headers */, + 254C6B7C1BF94DF4003EC431 /* ASTextKitRenderer+TextChecking.h in Headers */, 34EFC7611B701C9C00AD841F /* ASBackgroundLayoutSpec.h in Headers */, B35062591B010F070018CF92 /* ASBaseDefines.h in Headers */, B35062131B010EFD0018CF92 /* ASBasicImageDownloader.h in Headers */, @@ -1256,6 +1337,7 @@ 34EFC7631B701CBF00AD841F /* ASCenterLayoutSpec.h in Headers */, 18C2ED7F1B9B7DE800F627B3 /* ASCollectionNode.h in Headers */, B35061F51B010EFD0018CF92 /* ASCollectionView.h in Headers */, + 254C6B791BF94DF4003EC431 /* ASTextKitEntityAttribute.h in Headers */, 509E68631B3AEDB4009B9150 /* ASCollectionViewLayoutController.h in Headers */, B35061F71B010EFD0018CF92 /* ASCollectionViewProtocols.h in Headers */, B35061FA1B010EFD0018CF92 /* ASControlNode+Subclasses.h in Headers */, @@ -1263,7 +1345,7 @@ B35062171B010EFD0018CF92 /* ASDataController.h in Headers */, B35062191B010EFD0018CF92 /* ASDealloc2MainObject.h in Headers */, 34EFC75B1B701BAF00AD841F /* ASDimension.h in Headers */, - DE6D9E331C0AD9ED001A1DD3 /* ASRangeHandlerVisible.h in Headers */, + 254C6B801BF94DF4003EC431 /* ASEqualityHashHelpers.h in Headers */, B350624F1B010EFD0018CF92 /* ASDisplayNode+DebugTiming.h in Headers */, B35061FD1B010EFD0018CF92 /* ASDisplayNode+Subclasses.h in Headers */, B35061FB1B010EFD0018CF92 /* ASDisplayNode.h in Headers */, @@ -1277,6 +1359,7 @@ C78F7E2B1BF7809800CDEAFC /* ASTableNode.h in Headers */, AC7A2C181BDE11DF0093FE1A /* ASTableViewInternal.h in Headers */, B35062531B010EFD0018CF92 /* ASImageNode+CGExtras.h in Headers */, + 254C6B7F1BF94DF4003EC431 /* ASTextKitTruncating.h in Headers */, B35062021B010EFD0018CF92 /* ASImageNode.h in Headers */, B350621F1B010EFD0018CF92 /* ASImageProtocols.h in Headers */, 430E7C901B4C23F100697A4C /* ASIndexPath.h in Headers */, @@ -1304,13 +1387,17 @@ B350622B1B010EFD0018CF92 /* ASRangeHandlerRender.h in Headers */, 34EFC76E1B701CF400AD841F /* ASRatioLayoutSpec.h in Headers */, 34EFC7651B701CCC00AD841F /* ASRelativeSize.h in Headers */, + 254C6B741BF94DF4003EC431 /* ASTextNodeWordKerner.h in Headers */, B350622D1B010EFD0018CF92 /* ASScrollDirection.h in Headers */, + 254C6B751BF94DF4003EC431 /* ASTextKitHelpers.h in Headers */, B35062081B010EFD0018CF92 /* ASScrollNode.h in Headers */, B35062551B010EFD0018CF92 /* ASSentinel.h in Headers */, 9C8221961BA237B80037F19A /* ASStackBaselinePositionedLayout.h in Headers */, 9C49C3701B853961000B0DD5 /* ASStackLayoutable.h in Headers */, 34EFC7701B701CFA00AD841F /* ASStackLayoutDefines.h in Headers */, + 254C6B7B1BF94DF4003EC431 /* ASTextKitRenderer+Positioning.h in Headers */, CC7FD9E21BB603FF005CCB2B /* ASPhotosFrameworkImageRequest.h in Headers */, + 254C6B761BF94DF4003EC431 /* ASTextNodeTypes.h in Headers */, 34EFC7711B701CFF00AD841F /* ASStackLayoutSpec.h in Headers */, 2767E9411BB19BD600EA9B77 /* ASViewController.h in Headers */, 044284FE1BAA387800D16268 /* ASStackLayoutSpecUtilities.h in Headers */, @@ -1318,15 +1405,10 @@ 34EFC7771B701D2D00AD841F /* ASStackUnpositionedLayout.h in Headers */, 9C6BB3B31B8CC9C200F13F52 /* ASStaticLayoutable.h in Headers */, 34EFC7731B701D0700AD841F /* ASStaticLayoutSpec.h in Headers */, + 254C6B781BF94DF4003EC431 /* ASTextKitContext.h in Headers */, B350620A1B010EFD0018CF92 /* ASTableView.h in Headers */, B350620C1B010EFD0018CF92 /* ASTableViewProtocols.h in Headers */, B350620D1B010EFD0018CF92 /* ASTextNode.h in Headers */, - B350622E1B010EFD0018CF92 /* ASTextNodeCoreTextAdditions.h in Headers */, - B35062301B010EFD0018CF92 /* ASTextNodeRenderer.h in Headers */, - B35062321B010EFD0018CF92 /* ASTextNodeShadower.h in Headers */, - B35062341B010EFD0018CF92 /* ASTextNodeTextKitHelpers.h in Headers */, - B35062361B010EFD0018CF92 /* ASTextNodeTypes.h in Headers */, - B35062371B010EFD0018CF92 /* ASTextNodeWordKerner.h in Headers */, B35062391B010EFD0018CF92 /* ASThread.h in Headers */, 2C107F5B1BA9F54500F13DE5 /* AsyncDisplayKit.h in Headers */, 509E68651B3AEDC5009B9150 /* CGRect+ASConvenience.h in Headers */, @@ -1532,7 +1614,9 @@ 058D0A23195D050800B7D73C /* _ASAsyncTransactionContainer.m in Sources */, 058D0A24195D050800B7D73C /* _ASAsyncTransactionGroup.m in Sources */, 058D0A26195D050800B7D73C /* _ASCoreAnimationExtras.mm in Sources */, + 257754B41BEE44CD00737CA5 /* ASTextKitTailTruncater.mm in Sources */, AC026B711BD57DBF00BBC17E /* _ASHierarchyChangeSet.m in Sources */, + 257754BF1BEE458E00737CA5 /* ASTextKitCoreTextAdditions.m in Sources */, 058D0A18195D050800B7D73C /* _ASDisplayLayer.mm in Sources */, 058D0A19195D050800B7D73C /* _ASDisplayView.mm in Sources */, 9C55866A1BD549CB00B50E3A /* ASAsciiArtBoxCreator.m in Sources */, @@ -1557,6 +1641,7 @@ 058D0A15195D050800B7D73C /* ASDisplayNodeExtras.mm in Sources */, 0587F9BE1A7309ED00AFF0BA /* ASEditableTextNode.mm in Sources */, 464052231A3F83C40061C0BA /* ASFlowLayoutController.mm in Sources */, + 257754C41BEE458E00737CA5 /* ASTextNodeWordKerner.m in Sources */, 058D0A1A195D050800B7D73C /* ASHighlightOverlayLayer.mm in Sources */, 058D0A2B195D050800B7D73C /* ASImageNode+CGExtras.m in Sources */, 058D0A16195D050800B7D73C /* ASImageNode.mm in Sources */, @@ -1568,39 +1653,43 @@ 9C5FA35F1B90C9A500A62714 /* ASLayoutOptionsPrivate.mm in Sources */, 251B8EFA1BBB3D690087C538 /* ASCollectionViewFlowLayoutInspector.m in Sources */, ACF6ED271B17843500DA7C62 /* ASLayoutSpec.mm in Sources */, + 257754B01BEE44CD00737CA5 /* ASTextKitRenderer+TextChecking.mm in Sources */, 0516FA411A1563D200B4EBED /* ASMultiplexImageNode.mm in Sources */, DECBD6E91BE56E1900CF4905 /* ASButtonNode.mm in Sources */, 058D0A1B195D050800B7D73C /* ASMutableAttributedStringBuilder.m in Sources */, 055B9FA91A1C154B00035D6D /* ASNetworkImageNode.mm in Sources */, ACF6ED2C1B17843500DA7C62 /* ASOverlayLayoutSpec.mm in Sources */, 0442850F1BAA64EC00D16268 /* ASMultidimensionalArrayUtils.mm in Sources */, + 257754921BED28F300737CA5 /* ASEqualityHashHelpers.mm in Sources */, + 257754AB1BEE44CD00737CA5 /* ASTextKitEntityAttribute.m in Sources */, 055F1A3919ABD413004DAFF1 /* ASRangeController.mm in Sources */, 044285091BAA63FE00D16268 /* ASBatchFetching.m in Sources */, 292C59A11A956527007E5DD6 /* ASRangeHandlerPreload.mm in Sources */, 292C59A41A956527007E5DD6 /* ASRangeHandlerRender.mm in Sources */, + 257754AE1BEE44CD00737CA5 /* ASTextKitRenderer+Positioning.mm in Sources */, ACF6ED2E1B17843500DA7C62 /* ASRatioLayoutSpec.mm in Sources */, AC47D9461B3BB41900AAEE9D /* ASRelativeSize.mm in Sources */, 205F0E121B371BD7007741D0 /* ASScrollDirection.m in Sources */, D785F6631A74327E00291744 /* ASScrollNode.m in Sources */, 058D0A2C195D050800B7D73C /* ASSentinel.m in Sources */, 9C8221971BA237B80037F19A /* ASStackBaselinePositionedLayout.mm in Sources */, + 258FF4281C0D152600A83844 /* ASRangeHandlerVisible.mm in Sources */, 251B8EF81BBB3D690087C538 /* ASCollectionDataController.mm in Sources */, ACF6ED301B17843500DA7C62 /* ASStackLayoutSpec.mm in Sources */, + 257754BE1BEE458E00737CA5 /* ASTextKitHelpers.mm in Sources */, + 257754A91BEE44CD00737CA5 /* ASTextKitContext.mm in Sources */, ACF6ED501B17847A00DA7C62 /* ASStackPositionedLayout.mm in Sources */, ACF6ED521B17847A00DA7C62 /* ASStackUnpositionedLayout.mm in Sources */, + 257754A61BEE44CD00737CA5 /* ASTextKitAttributes.mm in Sources */, ACF6ED321B17843500DA7C62 /* ASStaticLayoutSpec.mm in Sources */, AC026B6B1BD57D6F00BBC17E /* ASChangeSetDataController.m in Sources */, 055F1A3519ABD3E3004DAFF1 /* ASTableView.mm in Sources */, 058D0A17195D050800B7D73C /* ASTextNode.mm in Sources */, - 058D0A1C195D050800B7D73C /* ASTextNodeCoreTextAdditions.m in Sources */, - DE6D9E341C0AD9ED001A1DD3 /* ASRangeHandlerVisible.mm in Sources */, - 058D0A1D195D050800B7D73C /* ASTextNodeRenderer.mm in Sources */, - 058D0A1E195D050800B7D73C /* ASTextNodeShadower.m in Sources */, - 058D0A1F195D050800B7D73C /* ASTextNodeTextKitHelpers.mm in Sources */, - 058D0A20195D050800B7D73C /* ASTextNodeWordKerner.m in Sources */, + 257754AC1BEE44CD00737CA5 /* ASTextKitRenderer.mm in Sources */, ACC945AB1BA9E7C1005E1FB8 /* ASViewController.m in Sources */, B0F8805B1BEAEC7500D17647 /* ASTableNode.m in Sources */, 205F0E221B376416007741D0 /* CGRect+ASConvenience.m in Sources */, + 257754B21BEE44CD00737CA5 /* ASTextKitShadower.mm in Sources */, 058D0A21195D050800B7D73C /* NSMutableAttributedString+TextKitAdditions.m in Sources */, 205F0E101B371875007741D0 /* UICollectionViewLayout+ASConvenience.m in Sources */, CC7FD9DF1BB5E962005CCB2B /* ASPhotosFrameworkImageRequest.m in Sources */, @@ -1632,12 +1721,12 @@ 058D0A3C195D057000B7D73C /* ASMutableAttributedStringBuilderTests.m in Sources */, ACF6ED611B178DC700DA7C62 /* ASOverlayLayoutSpecSnapshotTests.mm in Sources */, ACF6ED621B178DC700DA7C62 /* ASRatioLayoutSpecSnapshotTests.mm in Sources */, + 254C6B541BF8FF2A003EC431 /* ASTextKitTests.mm in Sources */, 05EA6FE71AC0966E00E35788 /* ASSnapshotTestCase.mm in Sources */, ACF6ED631B178DC700DA7C62 /* ASStackLayoutSpecSnapshotTests.mm in Sources */, 3C9C128519E616EF00E942A0 /* ASTableViewTests.m in Sources */, - 058D0A3D195D057000B7D73C /* ASTextNodeCoreTextAdditionsTests.m in Sources */, - 058D0A3E195D057000B7D73C /* ASTextNodeRendererTests.m in Sources */, - 058D0A3F195D057000B7D73C /* ASTextNodeShadowerTests.m in Sources */, + 254C6B521BF8FE6D003EC431 /* ASTextKitTruncationTests.mm in Sources */, + 058D0A3D195D057000B7D73C /* ASTextKitCoreTextAdditionsTests.m in Sources */, 058D0A40195D057000B7D73C /* ASTextNodeTests.m in Sources */, 058D0A41195D057000B7D73C /* ASTextNodeWordKernerTests.mm in Sources */, ); @@ -1660,6 +1749,7 @@ B35062121B010EFD0018CF92 /* _ASDisplayView.mm in Sources */, B350624C1B010EFD0018CF92 /* _ASPendingState.m in Sources */, 509E68621B3AEDA5009B9150 /* ASAbstractLayoutController.mm in Sources */, + 254C6B861BF94F8A003EC431 /* ASTextKitContext.mm in Sources */, 34EFC7621B701CA400AD841F /* ASBackgroundLayoutSpec.mm in Sources */, B35062141B010EFD0018CF92 /* ASBasicImageDownloader.mm in Sources */, B35062161B010EFD0018CF92 /* ASBatchContext.mm in Sources */, @@ -1674,14 +1764,17 @@ 34EFC75C1B701BD200AD841F /* ASDimension.mm in Sources */, B350624E1B010EFD0018CF92 /* ASDisplayNode+AsyncDisplay.mm in Sources */, B35062501B010EFD0018CF92 /* ASDisplayNode+DebugTiming.mm in Sources */, + 254C6B891BF94F8A003EC431 /* ASTextKitRenderer+Positioning.mm in Sources */, B35062511B010EFD0018CF92 /* ASDisplayNode+UIViewBridge.mm in Sources */, B35061FC1B010EFD0018CF92 /* ASDisplayNode.mm in Sources */, B35061FF1B010EFD0018CF92 /* ASDisplayNodeExtras.mm in Sources */, B35062011B010EFD0018CF92 /* ASEditableTextNode.mm in Sources */, + 254C6B881BF94F8A003EC431 /* ASTextKitRenderer.mm in Sources */, B350621C1B010EFD0018CF92 /* ASFlowLayoutController.mm in Sources */, B350621E1B010EFD0018CF92 /* ASHighlightOverlayLayer.mm in Sources */, B35062541B010EFD0018CF92 /* ASImageNode+CGExtras.m in Sources */, B35062031B010EFD0018CF92 /* ASImageNode.mm in Sources */, + 254C6B821BF94F8A003EC431 /* ASTextKitHelpers.mm in Sources */, 430E7C921B4C23F100697A4C /* ASIndexPath.m in Sources */, 34EFC7601B701C8B00AD841F /* ASInsetLayoutSpec.mm in Sources */, 34EFC75E1B701BF000AD841F /* ASInternalHelpers.mm in Sources */, @@ -1689,7 +1782,9 @@ 9C5FA3541B8F6ADF00A62714 /* ASLayoutOptions.mm in Sources */, 9C5FA3601B90C9A500A62714 /* ASLayoutOptionsPrivate.mm in Sources */, DECBD6EA1BE56E1900CF4905 /* ASButtonNode.mm in Sources */, + 254C6B841BF94F8A003EC431 /* ASTextNodeWordKerner.m in Sources */, 34EFC76B1B701CEB00AD841F /* ASLayoutSpec.mm in Sources */, + 254C6B8C1BF94F8A003EC431 /* ASTextKitTailTruncater.mm in Sources */, B35062051B010EFD0018CF92 /* ASMultiplexImageNode.mm in Sources */, B35062251B010EFD0018CF92 /* ASMutableAttributedStringBuilder.m in Sources */, B35062071B010EFD0018CF92 /* ASNetworkImageNode.mm in Sources */, @@ -1700,8 +1795,11 @@ B350622A1B010EFD0018CF92 /* ASRangeHandlerPreload.mm in Sources */, B350622C1B010EFD0018CF92 /* ASRangeHandlerRender.mm in Sources */, 34EFC76F1B701CF700AD841F /* ASRatioLayoutSpec.mm in Sources */, + 254C6B8B1BF94F8A003EC431 /* ASTextKitShadower.mm in Sources */, 34EFC7661B701CD200AD841F /* ASRelativeSize.mm in Sources */, + 254C6B851BF94F8A003EC431 /* ASTextKitAttributes.mm in Sources */, 509E68601B3AED8E009B9150 /* ASScrollDirection.m in Sources */, + 25A977EF1C0D2A5500406B62 /* ASRangeHandlerVisible.mm in Sources */, B35062091B010EFD0018CF92 /* ASScrollNode.m in Sources */, B35062561B010EFD0018CF92 /* ASSentinel.m in Sources */, 9C8221981BA237B80037F19A /* ASStackBaselinePositionedLayout.mm in Sources */, @@ -1712,17 +1810,15 @@ 34EFC7741B701D0A00AD841F /* ASStaticLayoutSpec.mm in Sources */, B350620B1B010EFD0018CF92 /* ASTableView.mm in Sources */, B350620E1B010EFD0018CF92 /* ASTextNode.mm in Sources */, - DE6D9E351C0AD9ED001A1DD3 /* ASRangeHandlerVisible.mm in Sources */, - B350622F1B010EFD0018CF92 /* ASTextNodeCoreTextAdditions.m in Sources */, - B35062311B010EFD0018CF92 /* ASTextNodeRenderer.mm in Sources */, - B35062331B010EFD0018CF92 /* ASTextNodeShadower.m in Sources */, - B35062351B010EFD0018CF92 /* ASTextNodeTextKitHelpers.mm in Sources */, - B35062381B010EFD0018CF92 /* ASTextNodeWordKerner.m in Sources */, C78F7E2A1BF7808300CDEAFC /* ASTableNode.m in Sources */, 509E68661B3AEDD7009B9150 /* CGRect+ASConvenience.m in Sources */, + 254C6B8D1BF94F8A003EC431 /* ASEqualityHashHelpers.mm in Sources */, + 254C6B871BF94F8A003EC431 /* ASTextKitEntityAttribute.m in Sources */, 34566CB31BC1213700715E6B /* ASPhotosFrameworkImageRequest.m in Sources */, + 254C6B831BF94F8A003EC431 /* ASTextKitCoreTextAdditions.m in Sources */, B350623B1B010EFD0018CF92 /* NSMutableAttributedString+TextKitAdditions.m in Sources */, 044284FD1BAA365100D16268 /* UICollectionViewLayout+ASConvenience.m in Sources */, + 254C6B8A1BF94F8A003EC431 /* ASTextKitRenderer+TextChecking.mm in Sources */, ); runOnlyForDeploymentPostprocessing = 0; }; @@ -1866,6 +1962,7 @@ buildSettings = { APPLICATION_EXTENSION_API_ONLY = YES; DSTROOT = /tmp/AsyncDisplayKit.dst; + GCC_INPUT_FILETYPE = automatic; GCC_PRECOMPILE_PREFIX_HEADER = YES; GCC_PREFIX_HEADER = "AsyncDisplayKit/AsyncDisplayKit-Prefix.pch"; GCC_TREAT_WARNINGS_AS_ERRORS = YES; @@ -1883,6 +1980,7 @@ buildSettings = { APPLICATION_EXTENSION_API_ONLY = YES; DSTROOT = /tmp/AsyncDisplayKit.dst; + GCC_INPUT_FILETYPE = automatic; GCC_PRECOMPILE_PREFIX_HEADER = YES; GCC_PREFIX_HEADER = "AsyncDisplayKit/AsyncDisplayKit-Prefix.pch"; GCC_TREAT_WARNINGS_AS_ERRORS = YES; diff --git a/AsyncDisplayKit/ASEditableTextNode.mm b/AsyncDisplayKit/ASEditableTextNode.mm index b0beb67385..d8da46498b 100644 --- a/AsyncDisplayKit/ASEditableTextNode.mm +++ b/AsyncDisplayKit/ASEditableTextNode.mm @@ -12,7 +12,7 @@ #import "ASDisplayNode+Subclasses.h" #import "ASEqualityHelpers.h" -#import "ASTextNodeTextKitHelpers.h" +#import "ASTextKitHelpers.h" #import "ASTextNodeWordKerner.h" #import "ASThread.h" diff --git a/AsyncDisplayKit/ASEqualityHashHelpers.mm b/AsyncDisplayKit/ASEqualityHashHelpers.mm new file mode 100644 index 0000000000..ca159fc980 --- /dev/null +++ b/AsyncDisplayKit/ASEqualityHashHelpers.mm @@ -0,0 +1,26 @@ +/* + * Copyright (c) 2014-present, Facebook, Inc. + * All rights reserved. + * + * This source code is licensed under the BSD-style license found in the + * LICENSE file in the root directory of this source tree. An additional grant + * of patent rights can be found in the PATENTS file in the same directory. + * + */ + +#import "ASEqualityHashHelpers.h" + +#import +#import +#import +#import + +NSUInteger ASIntegerArrayHash(const NSUInteger *subhashes, NSUInteger count) +{ + uint64_t result = subhashes[0]; + for (int ii = 1; ii < count; ++ii) { + result = ASHashCombine(result, subhashes[ii]); + } + return ASHash64ToNative(result); +} + diff --git a/AsyncDisplayKit/ASTextNode.h b/AsyncDisplayKit/ASTextNode.h index fd8e0d1b6b..130cc16b22 100644 --- a/AsyncDisplayKit/ASTextNode.h +++ b/AsyncDisplayKit/ASTextNode.h @@ -68,7 +68,7 @@ typedef NS_ENUM(NSUInteger, ASTextNodeHighlightStyle) { @abstract The maximum number of lines to render of the text before truncation. @default 0 (No limit) */ -@property (nonatomic, assign) NSUInteger maximumLineCount; +@property (nonatomic, assign) NSUInteger maximumNumberOfLines; /** @abstract The number of lines in the text. Text must have been sized first. diff --git a/AsyncDisplayKit/ASTextNode.mm b/AsyncDisplayKit/ASTextNode.mm index 0f78ac960d..6c797fbaba 100644 --- a/AsyncDisplayKit/ASTextNode.mm +++ b/AsyncDisplayKit/ASTextNode.mm @@ -13,13 +13,15 @@ #import #import #import -#import -#import #import +#import "ASTextKitCoreTextAdditions.h" +#import "ASTextKitHelpers.h" +#import "ASTextKitRenderer.h" +#import "ASTextKitRenderer+Positioning.h" +#import "ASTextKitShadower.h" + #import "ASInternalHelpers.h" -#import "ASTextNodeRenderer.h" -#import "ASTextNodeShadower.h" #import "ASEqualityHelpers.h" static const NSTimeInterval ASTextNodeHighlightFadeOutDuration = 0.15; @@ -30,14 +32,11 @@ static NSString *ASTextNodeTruncationTokenAttributeName = @"ASTextNodeTruncation @interface ASTextNodeDrawParameters : NSObject -- (instancetype)initWithRenderer:(ASTextNodeRenderer *)renderer - shadower:(ASTextNodeShadower *)shadower +- (instancetype)initWithRenderer:(ASTextKitRenderer *)renderer textOrigin:(CGPoint)textOrigin backgroundColor:(CGColorRef)backgroundColor; -@property (nonatomic, strong, readonly) ASTextNodeRenderer *renderer; - -@property (nonatomic, strong, readonly) ASTextNodeShadower *shadower; +@property (nonatomic, strong, readonly) ASTextKitRenderer *renderer; @property (nonatomic, assign, readonly) CGPoint textOrigin; @@ -47,14 +46,12 @@ static NSString *ASTextNodeTruncationTokenAttributeName = @"ASTextNodeTruncation @implementation ASTextNodeDrawParameters -- (instancetype)initWithRenderer:(ASTextNodeRenderer *)renderer - shadower:(ASTextNodeShadower *)shadower +- (instancetype)initWithRenderer:(ASTextKitRenderer *)renderer textOrigin:(CGPoint)textOrigin backgroundColor:(CGColorRef)backgroundColor { if (self = [super init]) { _renderer = renderer; - _shadower = shadower; _textOrigin = textOrigin; _backgroundColor = CGColorRetain(backgroundColor); } @@ -91,8 +88,7 @@ static NSString *ASTextNodeTruncationTokenAttributeName = @"ASTextNodeTruncation CGSize _constrainedSize; - ASTextNodeRenderer *_renderer; - ASTextNodeShadower *_shadower; + ASTextKitRenderer *_renderer; UILongPressGestureRecognizer *_longPressGestureRecognizer; } @@ -117,7 +113,7 @@ static NSString *ASTextNodeTruncationTokenAttributeName = @"ASTextNodeTruncation self.needsDisplayOnBoundsChange = YES; _truncationMode = NSLineBreakByWordWrapping; - _truncationAttributedString = DefaultTruncationAttributedString(); + _composedTruncationString = DefaultTruncationAttributedString(); // The common case is for a text node to be non-opaque and blended over some background. self.opaque = NO; @@ -181,32 +177,13 @@ static NSString *ASTextNodeTruncationTokenAttributeName = @"ASTextNodeTruncation { ASDisplayNodeAssert(constrainedSize.width >= 0, @"Constrained width for text (%f) is too narrow", constrainedSize.width); ASDisplayNodeAssert(constrainedSize.height >= 0, @"Constrained height for text (%f) is too short", constrainedSize.height); - // The supplied constrainedSize should include room for shadowPadding. - // Inset the constrainedSize by the shadow padding to get the size available for text. - UIEdgeInsets shadowPadding = [[self _shadower] shadowPadding]; - // Invert the negative values of shadow padding to get a positive inset - UIEdgeInsets shadowPaddingOutset = ASDNEdgeInsetsInvert(shadowPadding); - // Inset the padded constrainedSize to get the remaining size available for text - CGRect constrainedRect = CGRect{CGPointZero, constrainedSize}; - CGSize constrainedSizeForText = UIEdgeInsetsInsetRect(constrainedRect, shadowPaddingOutset).size; - ASDisplayNodeAssert(constrainedSizeForText.width >= 0, @"Constrained width for text (%f) after subtracting shadow padding (%@) is too narrow", constrainedSizeForText.width, NSStringFromUIEdgeInsets(shadowPadding)); - ASDisplayNodeAssert(constrainedSizeForText.height >= 0, @"Constrained height for text (%f) after subtracting shadow padding (%@) is too short", constrainedSizeForText.height, NSStringFromUIEdgeInsets(shadowPadding)); - - _constrainedSize = constrainedSizeForText; + _constrainedSize = constrainedSize; [self _invalidateRenderer]; ASDisplayNodeRespectThreadAffinityOfNode(self, ^{ [self setNeedsDisplay]; }); - CGSize rendererSize = [[self _renderer] size]; - - // Add shadow padding back - CGSize renderSizePlusShadowPadding = UIEdgeInsetsInsetRect(CGRect{CGPointZero, rendererSize}, shadowPadding).size; - ASDisplayNodeAssert(renderSizePlusShadowPadding.width >= 0, @"Calculated width for text with shadow padding (%f) is too narrow", constrainedSizeForText.width); - ASDisplayNodeAssert(renderSizePlusShadowPadding.height >= 0, @"Calculated height for text with shadow padding (%f) is too short", constrainedSizeForText.height); - renderSizePlusShadowPadding = ceilSizeValue(renderSizePlusShadowPadding); - return CGSizeMake(MIN(renderSizePlusShadowPadding.width, constrainedSize.width), - MIN(renderSizePlusShadowPadding.height, constrainedSize.height)); + return [[self _renderer] size]; } - (void)displayDidFinish @@ -269,21 +246,28 @@ static NSString *ASTextNodeTruncationTokenAttributeName = @"ASTextNodeTruncation #pragma mark - Renderer Management -- (ASTextNodeRenderer *)_renderer +- (ASTextKitRenderer *)_renderer { ASDN::MutexLocker l(_rendererLock); if (_renderer == nil) { CGSize constrainedSize = _constrainedSize.width != -INFINITY ? _constrainedSize : self.bounds.size; - _renderer = [[ASTextNodeRenderer alloc] initWithAttributedString:_attributedString - truncationString:_composedTruncationString - truncationMode:_truncationMode - maximumLineCount:_maximumLineCount - exclusionPaths:_exclusionPaths - constrainedSize:constrainedSize]; + _renderer = [[ASTextKitRenderer alloc] initWithTextKitAttributes:[self _rendererAttributes] + constrainedSize:constrainedSize]; } return _renderer; } +- (ASTextKitAttributes)_rendererAttributes +{ + return { + .attributedString = _attributedString, + .truncationAttributedString = _composedTruncationString, + .lineBreakMode = _truncationMode, + .maximumNumberOfLines = _maximumNumberOfLines, + .exclusionPaths = _exclusionPaths, + }; +} + - (void)_invalidateRenderer { ASDN::MutexLocker l(_rendererLock); @@ -291,7 +275,7 @@ static NSString *ASTextNodeTruncationTokenAttributeName = @"ASTextNodeTruncation // Destruction of the layout managers/containers/text storage is quite // expensive, and can take some time, so we dispatch onto a bg queue to // actually dealloc. - __block ASTextNodeRenderer *renderer = _renderer; + __block ASTextKitRenderer *renderer = _renderer; dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{ renderer = nil; }); @@ -299,23 +283,6 @@ static NSString *ASTextNodeTruncationTokenAttributeName = @"ASTextNodeTruncation _renderer = nil; } -#pragma mark - Shadow Drawer Management -- (ASTextNodeShadower *)_shadower -{ - if (_shadower == nil) { - _shadower = [[ASTextNodeShadower alloc] initWithShadowOffset:_shadowOffset - shadowColor:_shadowColor - shadowOpacity:_shadowOpacity - shadowRadius:_shadowRadius]; - } - return _shadower; -} - -- (void)_invalidateShadower -{ - _shadower = nil; -} - #pragma mark - Modifying User Text - (void)setAttributedString:(NSAttributedString *)attributedString { @@ -399,11 +366,11 @@ static NSString *ASTextNodeTruncationTokenAttributeName = @"ASTextNodeTruncation } // Draw shadow - [parameters.shadower setShadowInContext:context]; + [[parameters.renderer shadower] setShadowInContext:context]; // Draw text bounds.origin = parameters.textOrigin; - [parameters.renderer drawInRect:bounds inContext:context]; + [parameters.renderer drawInContext:context bounds:bounds]; CGContextRestoreGState(context); } @@ -414,9 +381,8 @@ static NSString *ASTextNodeTruncationTokenAttributeName = @"ASTextNodeTruncation UIEdgeInsets shadowPadding = [self shadowPadding]; CGPoint textOrigin = CGPointMake(self.bounds.origin.x - shadowPadding.left, self.bounds.origin.y - shadowPadding.top); return [[ASTextNodeDrawParameters alloc] initWithRenderer:[self _renderer] - shadower:[self _shadower] - textOrigin:textOrigin - backgroundColor:self.backgroundColor.CGColor]; + textOrigin:textOrigin + backgroundColor:self.backgroundColor.CGColor]; } #pragma mark - Attributes @@ -436,8 +402,8 @@ static NSString *ASTextNodeTruncationTokenAttributeName = @"ASTextNodeTruncation range:(out NSRange *)rangeOut inAdditionalTruncationMessage:(out BOOL *)inAdditionalTruncationMessageOut { - ASTextNodeRenderer *renderer = [self _renderer]; - NSRange visibleRange = [renderer visibleRange]; + ASTextKitRenderer *renderer = [self _renderer]; + NSRange visibleRange = renderer.visibleRanges[0]; NSAttributedString *attributedString = _attributedString; // Check in a 9-point region around the actual touch point so we make sure @@ -635,10 +601,11 @@ static NSString *ASTextNodeTruncationTokenAttributeName = @"ASTextNodeTruncation } if (highlightTargetLayer != nil) { - NSArray *highlightRects = [[self _renderer] rectsForTextRange:highlightRange measureOption:ASTextNodeRendererMeasureOptionBlock]; + NSArray *highlightRects = [[self _renderer] rectsForTextRange:highlightRange measureOption:ASTextKitRendererMeasureOptionBlock]; NSMutableArray *converted = [NSMutableArray arrayWithCapacity:highlightRects.count]; for (NSValue *rectValue in highlightRects) { - CGRect rendererRect = [[self class] _adjustRendererRect:rectValue.CGRectValue forShadowPadding:_shadower.shadowPadding]; + UIEdgeInsets shadowPadding = _renderer.shadower.shadowPadding; + CGRect rendererRect = [[self class] _adjustRendererRect:rectValue.CGRectValue forShadowPadding:shadowPadding]; CGRect highlightedRect = [self.layer convertRect:rendererRect toLayer:highlightTargetLayer]; // We set our overlay layer's frame to the bounds of the highlight target layer. @@ -699,7 +666,7 @@ static NSString *ASTextNodeTruncationTokenAttributeName = @"ASTextNodeTruncation return rendererRect; } -- (NSArray *)_rectsForTextRange:(NSRange)textRange measureOption:(ASTextNodeRendererMeasureOption)measureOption +- (NSArray *)_rectsForTextRange:(NSRange)textRange measureOption:(ASTextKitRendererMeasureOption)measureOption { NSArray *rects = [[self _renderer] rectsForTextRange:textRange measureOption:measureOption]; NSMutableArray *adjustedRects = [NSMutableArray array]; @@ -717,12 +684,12 @@ static NSString *ASTextNodeTruncationTokenAttributeName = @"ASTextNodeTruncation - (NSArray *)rectsForTextRange:(NSRange)textRange { - return [self _rectsForTextRange:textRange measureOption:ASTextNodeRendererMeasureOptionCapHeight]; + return [self _rectsForTextRange:textRange measureOption:ASTextKitRendererMeasureOptionCapHeight]; } - (NSArray *)highlightRectsForTextRange:(NSRange)textRange { - return [self _rectsForTextRange:textRange measureOption:ASTextNodeRendererMeasureOptionBlock]; + return [self _rectsForTextRange:textRange measureOption:ASTextKitRendererMeasureOptionBlock]; } - (CGRect)trailingRect @@ -755,11 +722,11 @@ static NSString *ASTextNodeTruncationTokenAttributeName = @"ASTextNodeTruncation UIGraphicsBeginImageContext(size); [self.placeholderColor setFill]; - ASTextNodeRenderer *renderer = [self _renderer]; - NSRange textRange = [renderer visibleRange]; + ASTextKitRenderer *renderer = [self _renderer]; + NSRange textRange = renderer.visibleRanges[0]; // cap height is both faster and creates less subpixel blending - NSArray *lineRects = [self _rectsForTextRange:textRange measureOption:ASTextNodeRendererMeasureOptionLineHeight]; + NSArray *lineRects = [self _rectsForTextRange:textRange measureOption:ASTextKitRendererMeasureOptionLineHeight]; // fill each line with the placeholder color for (NSValue *rectValue in lineRects) { @@ -830,7 +797,8 @@ static NSString *ASTextNodeTruncationTokenAttributeName = @"ASTextNodeTruncation BOOL linkCrossesVisibleRange = (lastCharIndex > range.location) && (lastCharIndex < NSMaxRange(range) - 1); if (inAdditionalTruncationMessage) { - NSRange truncationMessageRange = [self _additionalTruncationMessageRangeWithVisibleRange:[[self _renderer] visibleRange]]; + NSRange visibleRange = [self _renderer].visibleRanges[0]; + NSRange truncationMessageRange = [self _additionalTruncationMessageRangeWithVisibleRange:visibleRange]; [self _setHighlightRange:truncationMessageRange forAttributeName:ASTextNodeTruncationTokenAttributeName value:nil animated:YES]; } else if (range.length && !linkCrossesVisibleRange && linkAttributeValue != nil && linkAttributeName != nil) { [self _setHighlightRange:range forAttributeName:linkAttributeName value:linkAttributeValue animated:YES]; @@ -905,7 +873,7 @@ static NSString *ASTextNodeTruncationTokenAttributeName = @"ASTextNodeTruncation CGColorRetain(shadowColor); } _shadowColor = shadowColor; - [self _invalidateShadower]; + [self _invalidateRenderer]; ASDisplayNodeRespectThreadAffinityOfNode(self, ^{ [self setNeedsDisplay]; }); @@ -921,7 +889,7 @@ static NSString *ASTextNodeTruncationTokenAttributeName = @"ASTextNodeTruncation { if (!CGSizeEqualToSize(_shadowOffset, shadowOffset)) { _shadowOffset = shadowOffset; - [self _invalidateShadower]; + [self _invalidateRenderer]; ASDisplayNodeRespectThreadAffinityOfNode(self, ^{ [self setNeedsDisplay]; }); @@ -937,7 +905,7 @@ static NSString *ASTextNodeTruncationTokenAttributeName = @"ASTextNodeTruncation { if (_shadowOpacity != shadowOpacity) { _shadowOpacity = shadowOpacity; - [self _invalidateShadower]; + [self _invalidateRenderer]; ASDisplayNodeRespectThreadAffinityOfNode(self, ^{ [self setNeedsDisplay]; }); @@ -953,7 +921,7 @@ static NSString *ASTextNodeTruncationTokenAttributeName = @"ASTextNodeTruncation { if (_shadowRadius != shadowRadius) { _shadowRadius = shadowRadius; - [self _invalidateShadower]; + [self _invalidateRenderer]; ASDisplayNodeRespectThreadAffinityOfNode(self, ^{ [self setNeedsDisplay]; }); @@ -962,7 +930,7 @@ static NSString *ASTextNodeTruncationTokenAttributeName = @"ASTextNodeTruncation - (UIEdgeInsets)shadowPadding { - return [[self _shadower] shadowPadding]; + return [self _renderer].shadower.shadowPadding; } #pragma mark - Truncation Message @@ -1010,13 +978,14 @@ static NSAttributedString *DefaultTruncationAttributedString() - (BOOL)isTruncated { - return [[self _renderer] truncationStringCharacterRange].location != NSNotFound; + NSRange visibleRange = [self _renderer].visibleRanges[0]; + return visibleRange.length < _attributedString.length; } -- (void)setMaximumLineCount:(NSUInteger)maximumLineCount +- (void)setMaximumNumberOfLines:(NSUInteger)maximumNumberOfLines { - if (_maximumLineCount != maximumLineCount) { - _maximumLineCount = maximumLineCount; + if (_maximumNumberOfLines != maximumNumberOfLines) { + _maximumNumberOfLines = maximumNumberOfLines; [self _invalidateRenderer]; ASDisplayNodeRespectThreadAffinityOfNode(self, ^{ [self setNeedsDisplay]; diff --git a/AsyncDisplayKit/AsyncDisplayKit.h b/AsyncDisplayKit/AsyncDisplayKit.h index 3d3897000a..1c592134cb 100644 --- a/AsyncDisplayKit/AsyncDisplayKit.h +++ b/AsyncDisplayKit/AsyncDisplayKit.h @@ -65,12 +65,6 @@ #import #import #import -#import -#import -#import -#import -#import -#import #import #import #import diff --git a/AsyncDisplayKit/Details/ASTextNodeRenderer.h b/AsyncDisplayKit/Details/ASTextNodeRenderer.h deleted file mode 100644 index 3b80bb1677..0000000000 --- a/AsyncDisplayKit/Details/ASTextNodeRenderer.h +++ /dev/null @@ -1,188 +0,0 @@ -/* Copyright (c) 2014-present, Facebook, Inc. - * All rights reserved. - * - * This source code is licensed under the BSD-style license found in the - * LICENSE file in the root directory of this source tree. An additional grant - * of patent rights can be found in the PATENTS file in the same directory. - */ - -#import - - -typedef void (^as_renderer_index_block_t)(NSUInteger characterIndex, - CGRect glyphBoundingRect, - BOOL *stop); - -/* - * Measure options are used to specify which type of line height measurement to - * use. - * - * ASTextNodeRendererMeasureOptionLineHeight is faster and will give the - * height from the baseline to the next line. - * - * ASTextNodeRendererMeasureOptionCapHeight is a more nuanced measure of the - * glyphs in the given range that attempts to produce a visually balanced - * rectangle above and below the glyphs to produce nice looking text highlights. - * - * ASTextNodeRendererMeasureOptionBlock uses the cap height option to - * generate each glyph index, but combines all but the first and last line rect - * into a single block. Looks nice for multiline selection. - * - */ -typedef NS_ENUM(NSUInteger, ASTextNodeRendererMeasureOption) { - ASTextNodeRendererMeasureOptionLineHeight, - ASTextNodeRendererMeasureOptionCapHeight, - ASTextNodeRendererMeasureOptionBlock -}; - -/* - * This is an immutable textkit renderer that is responsible for sizing and - * rendering text. - * - * @discussion This class implements internal locking to allow it to be used - * safely from background threads. It is recommended that you create and cache a - * renderer for each combination of parameters. - */ -@interface ASTextNodeRenderer : NSObject - -- (instancetype)initWithAttributedString:(NSAttributedString *)attributedString - truncationString:(NSAttributedString *)truncationString - truncationMode:(NSLineBreakMode)truncationMode - maximumLineCount:(NSUInteger)maximumLineCount - exclusionPaths:(NSArray *)exclusionPaths - constrainedSize:(CGSize)constrainedSize; -/* - * Designated Initializer - * - * @discussion No sizing occurs as a result of initializing a renderer. - * Instead, sizing and truncation operations occur lazily as they are needed, - * so feel free - */ -- (instancetype)initWithAttributedString:(NSAttributedString *)attributedString - truncationString:(NSAttributedString *)truncationString - truncationMode:(NSLineBreakMode)truncationMode - maximumLineCount:(NSUInteger)maximumLineCount - constrainedSize:(CGSize)constrainedSize; -#pragma mark - Drawing -/* - * Draw the renderer's text content into the bounds provided. - * - * @param bounds The rect in which to draw the contents of the renderer. - * @param context The CGContext in which to draw the contents of the renderer. - * - * @discussion Note that if a shadow is to be drawn, then the text will actually - * draw inside a region that is inset from the bounds provided. Use - * shadowPadding to properly transform the bounds such that this is correct for - * your use-case. See shadowPadding docs for more. - * - * Initializes the textkit components lazily if they have not yet been created. - * You may want to consider triggering this cost before hitting the draw method - * if you are sensitive to this cost in drawInRect... - */ -- (void)drawInRect:(CGRect)bounds inContext:(CGContextRef)context; - -#pragma mark - Layout - -/* - * Returns the computed size of the renderer given the constrained size and - * other parameters in the initializer. - * - * @discussion No actual computation is done in this method. It simply returns - * the cached calculated size from initialization so this is very cheap to call. - * - * Triggers initialization of textkit components, truncation, and sizing. - */ -- (CGSize)size; - -/* - * Returns the trailing rect unused by the renderer in the last rendered line. - * - * @discussion In the coordinate space of the renderer. - * - * Triggers initialization of textkit components, truncation, and sizing. - */ -- (CGRect)trailingRect; - -/* - * Returns the bounding rect for the given character range. - * - * @param textRange The character range for which the bounding rect will be - * computed. Should be within the range of the attributedString of this - * renderer. - * - * @discussion In the coordinate space of the renderer. - * - * Triggers initialization of textkit components, truncation, and sizing. - */ -- (CGRect)frameForTextRange:(NSRange)textRange; - -/* - * Returns an array of rects representing the lines in the given character range - * - * @param textRange The character range for which the rects will be computed. - * should be within the range of the attributedString of this renderer. - * @param measureOption The measure option to use for construction of the rects. - * see ASTextNodeRendererMeasureOption docs for usage. - * - * @discussion This method is useful for providing highlighting text. Returned - * rects are in the coordinate space of the renderer. - * - * Triggers initialization of textkit components, truncation, and sizing. - */ -- (NSArray *)rectsForTextRange:(NSRange)textRange - measureOption:(ASTextNodeRendererMeasureOption)measureOption; - -/* - * Enumerate the text character indexes at a position within the coordinate - * space of the renderer. - * - * @param position The point inside the coordinate space of the renderer at - * which text indexes will be enumerated. - * @param block The block that will be executed for each index identified that - * may correspond to the given position. The block is given the character index - * that corresponds to the glyph at each index in question, as well as the - * bounding rect for that glyph. - * - * @discussion Glyph location based on a touch point is not an exact science - * because user touches are not well-represented by a simple point, especially - * in the context of link-heavy text. So we have this method to make it a bit - * easier. This method checks a grid of candidate positions around the touch - * point you give it, and computes the bounding rect of the glyph corresponding - * to the character index given. - * - * The bounding rect of the glyph can be used to identify the best glyph index - * that corresponds to your touch. For instance, comparing centroidal distance - * from the glyph bounding rect to the touch center is useful for identifying - * which link a user actually intended to select. - * - * Triggers initialization of textkit components, truncation, and sizing. - */ -- (void)enumerateTextIndexesAtPosition:(CGPoint)position - usingBlock:(as_renderer_index_block_t)block; - -#pragma mark - Text Ranges - -/* - * The character range that represents the truncationString provided in the - * initializer. location will be NSNotFound if no truncation occurred. - * - * Triggers initialization of textkit components, truncation, and sizing. - */ -- (NSRange)truncationStringCharacterRange; - -/* - * The character range from the original attributedString that is displayed by - * the renderer given the parameters in the initializer. - * - * Triggers initialization of textkit components, truncation, and sizing. - */ -- (NSRange)visibleRange; - -/* - * The number of lines shown in the string. - * - * Triggers initialization of textkit components, truncation, and sizing. - */ -- (NSUInteger)lineCount; - -@end diff --git a/AsyncDisplayKit/Details/ASTextNodeRenderer.mm b/AsyncDisplayKit/Details/ASTextNodeRenderer.mm deleted file mode 100644 index 84b290e08e..0000000000 --- a/AsyncDisplayKit/Details/ASTextNodeRenderer.mm +++ /dev/null @@ -1,654 +0,0 @@ -/* Copyright (c) 2014-present, Facebook, Inc. - * All rights reserved. - * - * This source code is licensed under the BSD-style license found in the - * LICENSE file in the root directory of this source tree. An additional grant - * of patent rights can be found in the PATENTS file in the same directory. - */ - -#import "ASTextNodeRenderer.h" - -#import - -#import "ASAssert.h" -#import "ASTextNodeTextKitHelpers.h" -#import "ASTextNodeWordKerner.h" -#import "ASThread.h" - -static const CGFloat ASTextNodeRendererGlyphTouchHitSlop = 5.0; -static const CGFloat ASTextNodeRendererTextCapHeightPadding = 1.3; - -@interface ASTextNodeRenderer () - -@end - -@implementation ASTextNodeRenderer { - CGSize _constrainedSize; - CGSize _calculatedSize; - - NSAttributedString *_attributedString; - NSAttributedString *_truncationString; - NSLineBreakMode _truncationMode; - NSUInteger _maximumLineCount; - NSRange _truncationCharacterRange; - NSRange _visibleRange; - - ASTextNodeWordKerner *_wordKerner; - - ASDN::RecursiveMutex _textKitLock; - NSLayoutManager *_layoutManager; - NSTextStorage *_textStorage; - NSTextContainer *_textContainer; - - NSArray *_exclusionPaths; -} - -#pragma mark - Initialization - -- (instancetype)initWithAttributedString:(NSAttributedString *)attributedString - truncationString:(NSAttributedString *)truncationString - truncationMode:(NSLineBreakMode)truncationMode - maximumLineCount:(NSUInteger)maximumLineCount - exclusionPaths:(NSArray *)exclusionPaths - constrainedSize:(CGSize)constrainedSize -{ - if (self = [super init]) { - _attributedString = attributedString; - _truncationString = truncationString; - _truncationMode = truncationMode; - _truncationCharacterRange = NSMakeRange(NSNotFound, truncationString.length); - - _maximumLineCount = maximumLineCount; - - _exclusionPaths = exclusionPaths; - - _constrainedSize = constrainedSize; - } - return self; -} - -- (instancetype)initWithAttributedString:(NSAttributedString *)attributedString - truncationString:(NSAttributedString *)truncationString - truncationMode:(NSLineBreakMode)truncationMode - maximumLineCount:(NSUInteger)maximumLineCount - constrainedSize:(CGSize)constrainedSize -{ - return [self initWithAttributedString:attributedString truncationString:truncationString truncationMode:truncationMode maximumLineCount:maximumLineCount exclusionPaths:nil constrainedSize:constrainedSize]; -} - -/* - * Use this method to lazily construct the TextKit components. - */ -- (void)_initializeTextKitComponentsIfNeeded -{ - ASDN::MutexLocker l(_textKitLock); - - if (_layoutManager == nil) { - [self _initializeTextKitComponentsWithAttributedString:_attributedString]; - } -} - -- (void)_initializeTextKitComponentsWithAttributedString:(NSAttributedString *)attributedString -{ - ASDN::MutexLocker l(_textKitLock); - - // Concurrently initialising TextKit components crashes (rdar://18448377) so we use a global lock. :( - static ASDN::StaticMutex mutex = ASDISPLAYNODE_MUTEX_INITIALIZER; - ASDN::StaticMutexLocker gl(mutex); - - // Create the TextKit component stack with our default configuration. - _textStorage = (attributedString ? [[NSTextStorage alloc] initWithAttributedString:attributedString] : [[NSTextStorage alloc] init]); - _layoutManager = [[NSLayoutManager alloc] init]; - _layoutManager.usesFontLeading = NO; - _wordKerner = [[ASTextNodeWordKerner alloc] init]; - _layoutManager.delegate = _wordKerner; - [_textStorage addLayoutManager:_layoutManager]; - _textContainer = [[NSTextContainer alloc] initWithSize:_constrainedSize]; - // We want the text laid out up to the very edges of the container. - _textContainer.lineFragmentPadding = 0; - // Translate our truncation mode into a line break mode on the container - _textContainer.lineBreakMode = _truncationMode; - // Set maximum number of lines - _textContainer.maximumNumberOfLines = _maximumLineCount; - - _textContainer.exclusionPaths = _exclusionPaths; - - [_layoutManager addTextContainer:_textContainer]; - - ASDN::StaticMutexUnlocker gu(mutex); - - [self _invalidateLayout]; -} - -#pragma mark - Layout Initialization - -- (void)_invalidateLayout -{ - ASDN::MutexLocker l(_textKitLock); - - // Force a layout, which means we have to recompute our truncation parameters - NSInteger originalStringLength = _textStorage.string.length; - - [self _calculateSize]; - - NSRange visibleGlyphRange = [_layoutManager glyphRangeForTextContainer:_textContainer]; - _visibleRange = [_layoutManager characterRangeForGlyphRange:visibleGlyphRange actualGlyphRange:NULL]; - - // Check if text is truncated, and if so apply our truncation string - if (_visibleRange.length < originalStringLength && _truncationString.length > 0) { - NSInteger firstCharacterIndexToReplace = [self _calculateCharacterIndexBeforeTruncationMessage]; - if (firstCharacterIndexToReplace == 0 || firstCharacterIndexToReplace == NSNotFound) { - // Something went horribly wrong, short-circuit - [self _calculateSize]; - return; - } - - // Update/truncate the visible range of text - _visibleRange = NSMakeRange(0, firstCharacterIndexToReplace); - NSRange truncationReplacementRange = NSMakeRange(firstCharacterIndexToReplace, _textStorage.length - firstCharacterIndexToReplace); - // Replace the end of the visible message with the truncation string - [_textStorage replaceCharactersInRange:truncationReplacementRange - withAttributedString:_truncationString]; - - _truncationCharacterRange = NSMakeRange(firstCharacterIndexToReplace, _truncationString.length); - - // We must recompute the calculated size because we may have changed it in - // changing the string - [self _calculateSize]; - } -} - -#pragma mark - Sizing - -/* - * Calculates the size of the text in the renderer based on the parameters - * stored in the ivars of this class. - * - * This method can be expensive, so it is important that it not be called - * frequently. It not only sizes the text, but it also configures the TextKit - * components for drawing, and responding to all other queries made to this - * class. - */ -- (void)_calculateSize -{ - ASDN::MutexLocker l(_textKitLock); - - if (_attributedString.length == 0) { - _calculatedSize = CGSizeZero; - return; - } - - [self _initializeTextKitComponentsIfNeeded]; - - // Force glyph generation and layout, which may not have happened yet (and - // isn't triggered by -usedRectForTextContainer:). - [_layoutManager ensureLayoutForTextContainer:_textContainer]; - - CGRect constrainedRect = CGRect{CGPointZero, _constrainedSize}; - CGRect boundingRect = [_layoutManager usedRectForTextContainer:_textContainer]; - - // TextKit often returns incorrect glyph bounding rects in the horizontal - // direction, so we clip to our bounding rect to make sure our width - // calculations aren't being offset by glyphs going beyond the constrained - // rect. - boundingRect = CGRectIntersection(boundingRect, (CGRect){.size = constrainedRect.size}); - - _calculatedSize = boundingRect.size; -} - -- (CGSize)size -{ - [self _initializeTextKitComponentsIfNeeded]; - - return _calculatedSize; -} - -#pragma mark - Layout - -- (CGRect)trailingRect -{ - ASDN::MutexLocker l(_textKitLock); - - [self _initializeTextKitComponentsIfNeeded]; - - // If have an empty string, then our whole bounds constitute trailing space. - if ([_textStorage length] == 0) { - return CGRectMake(0, 0, _calculatedSize.width, _calculatedSize.height); - } - - // Take everything after our final character as trailing space. - NSArray *finalRects = [self rectsForTextRange:NSMakeRange([_textStorage length] - 1, 1) measureOption:ASTextNodeRendererMeasureOptionLineHeight]; - CGRect finalGlyphRect = [[finalRects lastObject] CGRectValue]; - CGPoint origin = CGPointMake(CGRectGetMaxX(finalGlyphRect), CGRectGetMinY(finalGlyphRect)); - CGSize size = CGSizeMake(_calculatedSize.width - origin.x, _calculatedSize.height - origin.y); - return (CGRect){origin, size}; -} - -- (CGRect)frameForTextRange:(NSRange)textRange -{ - ASDN::MutexLocker l(_textKitLock); - - [self _initializeTextKitComponentsIfNeeded]; - - // Bail on invalid range. - if (NSMaxRange(textRange) > [_textStorage length]) { - ASDisplayNodeAssertNotNil(nil, @"Invalid range"); - return CGRectZero; - } - - // Force glyph generation and layout. - [_layoutManager ensureLayoutForTextContainer:_textContainer]; - - NSRange glyphRange = [_layoutManager glyphRangeForCharacterRange:textRange actualCharacterRange:NULL]; - CGRect textRect = [_layoutManager boundingRectForGlyphRange:glyphRange inTextContainer:_textContainer]; - return textRect; -} - -- (NSArray *)rectsForTextRange:(NSRange)textRange - measureOption:(ASTextNodeRendererMeasureOption)measureOption -{ - ASDN::MutexLocker l(_textKitLock); - - [self _initializeTextKitComponentsIfNeeded]; - - BOOL textRangeIsValid = (NSMaxRange(textRange) <= [_textStorage length]); - ASDisplayNodeAssertTrue(textRangeIsValid); - if (!textRangeIsValid) { - return @[]; - } - - // Used for block measure option - __block CGRect firstRect = CGRectNull; - __block CGRect lastRect = CGRectNull; - __block CGRect blockRect = CGRectNull; - NSMutableArray *textRects = [NSMutableArray array]; - - NSString *string = _textStorage.string; - - NSRange totalGlyphRange = [_layoutManager glyphRangeForCharacterRange:textRange actualCharacterRange:NULL]; - - [_layoutManager enumerateLineFragmentsForGlyphRange:totalGlyphRange usingBlock:^(CGRect rect, CGRect usedRect, NSTextContainer *textContainer, NSRange glyphRange, BOOL *stop) { - - CGRect lineRect = CGRectNull; - // If we're empty, don't bother looping through glyphs, use the default. - if (CGRectIsEmpty(usedRect)) { - lineRect = usedRect; - } else { - // TextKit's bounding rect computations are just a touch off, so we actually - // compose the rects by hand from the center of the given TextKit bounds and - // imposing the font attributes returned by the glyph's font. - NSRange lineGlyphRange = NSIntersectionRange(totalGlyphRange, glyphRange); - for (NSUInteger i = lineGlyphRange.location; i < NSMaxRange(lineGlyphRange) && i < string.length; i++) { - // We grab the properly sized rect for the glyph - CGRect properGlyphRect = [self _rectForGlyphAtIndex:i measureOption:measureOption]; - - // Don't count empty glyphs towards our line rect. - if (!CGRectIsEmpty(properGlyphRect)) { - lineRect = CGRectIsNull(lineRect) ? properGlyphRect - : CGRectUnion(lineRect, properGlyphRect); - } - } - } - - if (!CGRectIsNull(lineRect)) { - if (measureOption == ASTextNodeRendererMeasureOptionBlock) { - // For the block measurement option we store the first & last rect as - // special cases, then merge everything else into a single block rect - if (CGRectIsNull(firstRect)) { - // We don't have a firstRect, so we must be on the first line. - firstRect = lineRect; - } else if(CGRectIsNull(lastRect)) { - // We don't have a lastRect, but we do have a firstRect, so we must - // be on the second line. No need to merge in the blockRect just yet - lastRect = lineRect; - } else if(CGRectIsNull(blockRect)) { - // We have both a first and last rect, so we must be on the third line - // we don't have any blockRect to merge it into, so we just set it - // directly. - blockRect = lastRect; - lastRect = lineRect; - } else { - // Everything is already set, so we just merge this line into the - // block. - blockRect = CGRectUnion(blockRect, lastRect); - lastRect = lineRect; - } - } else { - // If the block option isn't being used then each line is being treated - // individually. - [textRects addObject:[NSValue valueWithCGRect:lineRect]]; - } - } - }]; - - if (measureOption == ASTextNodeRendererMeasureOptionBlock) { - // Block measure option is handled differently with just 3 vars for the entire range. - if (!CGRectIsNull(firstRect)) { - if (!CGRectIsNull(blockRect)) { - CGFloat rightEdge = MAX(CGRectGetMaxX(blockRect), CGRectGetMaxX(lastRect)); - if (rightEdge > CGRectGetMaxX(firstRect)) { - // Force the right side of the first rect to properly align with the - // right side of the rightmost of the block and last rect - firstRect.size.width += rightEdge - CGRectGetMaxX(firstRect); - } - - // Force the left side of the block rect to properly align with the - // left side of the leftmost of the first and last rect - blockRect.origin.x = MIN(CGRectGetMinX(firstRect), CGRectGetMinX(lastRect)); - // Force the right side of the block rect to properly align with the - // right side of the rightmost of the first and last rect - blockRect.size.width += MAX(CGRectGetMaxX(firstRect), CGRectGetMaxX(lastRect)) - CGRectGetMaxX(blockRect); - } - if (!CGRectIsNull(lastRect)) { - // Force the left edge of the last rect to properly align with the - // left side of the leftmost of the first and block rect, if necessary. - CGFloat leftEdge = MIN(CGRectGetMinX(blockRect), CGRectGetMinX(firstRect)); - CGFloat lastRectNudgeAmount = MAX(CGRectGetMinX(lastRect) - leftEdge, 0); - lastRect.origin.x = MIN(leftEdge, CGRectGetMinX(lastRect)); - lastRect.size.width += lastRectNudgeAmount; - } - - [textRects addObject:[NSValue valueWithCGRect:firstRect]]; - } - if (!CGRectIsNull(blockRect)) { - [textRects addObject:[NSValue valueWithCGRect:blockRect]]; - } - if (!CGRectIsNull(lastRect)) { - [textRects addObject:[NSValue valueWithCGRect:lastRect]]; - } - } - - return textRects; -} - -- (CGRect)_rectForGlyphAtIndex:(NSUInteger)glyphIndex - measureOption:(ASTextNodeRendererMeasureOption)measureOption -{ - ASDN::MutexLocker l(_textKitLock); - - NSUInteger charIndex = [_layoutManager characterIndexForGlyphAtIndex:glyphIndex]; - CGGlyph glyph = [_layoutManager glyphAtIndex:glyphIndex]; - CTFontRef font = (__bridge_retained CTFontRef)[_textStorage attribute:NSFontAttributeName - atIndex:charIndex - effectiveRange:NULL]; - if (font == nil) { - font = (__bridge_retained CTFontRef)[UIFont systemFontOfSize:12.0]; - } - - // Glyph Advance - // +-------------------------+ - // | | - // | | - // +------------------------+--|-------------------------|--+-----------+-----+ What TextKit returns sometimes - // | | | XXXXXXXXXXX + | | | (approx. correct height, but - // | ---------|--+---------+ XXX XXXX +|-----------|-----| sometimes inaccurate bounding - // | | | XXX XXXXX| | | widths) - // | | | XX XX | | | - // | | | XX | | | - // | | | XXX | | | - // | | | XX | | | - // | | | XXXXXXXXXXX | | | - // | Cap Height->| | XX | | | - // | | | XX | Ascent-->| | - // | | | XX | | | - // | | | XX | | | - // | | | X | | | - // | | | X | | | - // | | | X | | | - // | | | XX | | | - // | | | X | | | - // | ---------|-------+ X +-------------------------------------| - // | | XX | | - // | | X | | - // | | XX Descent------>| | - // | | XXXXXX | | - // | | XXX | | - // +------------------------+-------------------------------------------------+ - // | - // +--+Actual bounding box - - CGRect glyphRect = [_layoutManager boundingRectForGlyphRange:NSMakeRange(glyphIndex, 1) - inTextContainer:_textContainer]; - - // If it is a NSTextAttachment, we don't have the matched glyph and use width of glyphRect instead of advance. - CGFloat advance = (glyph == kCGFontIndexInvalid) ? glyphRect.size.width : CTFontGetAdvancesForGlyphs(font, kCTFontOrientationHorizontal, &glyph, NULL, 1); - - // We treat the center of the glyph's bounding box as the center of our new rect - CGPoint glyphCenter = CGPointMake(CGRectGetMidX(glyphRect), CGRectGetMidY(glyphRect)); - - CGRect properGlyphRect; - if (measureOption == ASTextNodeRendererMeasureOptionCapHeight - || measureOption == ASTextNodeRendererMeasureOptionBlock) { - CGFloat ascent = CTFontGetAscent(font); - CGFloat descent = CTFontGetDescent(font); - CGFloat capHeight = CTFontGetCapHeight(font); - CGFloat leading = CTFontGetLeading(font); - CGFloat glyphHeight = ascent + descent; - - // For visual balance, we add the cap height padding above the cap, and - // below the baseline, we scale by the descent so it grows with the size of - // the text. - CGFloat topPadding = ASTextNodeRendererTextCapHeightPadding * descent; - CGFloat bottomPadding = topPadding; - - properGlyphRect = CGRectMake(glyphCenter.x - advance * 0.5, - glyphCenter.y - glyphHeight * 0.5 + (ascent - capHeight) - topPadding + leading, - advance, - capHeight + topPadding + bottomPadding); - } else { - // We are just measuring the line heights here, so we can use the - // heights used by TextKit, which tend to be pretty good. - properGlyphRect = CGRectMake(glyphCenter.x - advance * 0.5, - glyphRect.origin.y, - advance, - glyphRect.size.height); - } - - CFRelease(font); - - return properGlyphRect; -} - -- (void)enumerateTextIndexesAtPosition:(CGPoint)position usingBlock:(as_renderer_index_block_t)block -{ - if (position.x > _constrainedSize.width - || position.y > _constrainedSize.height - || block == NULL) { - // Short circuit if the position is outside the size of this renderer, or - // if the block is null. - return; - } - - ASDN::MutexLocker l(_textKitLock); - - [self _initializeTextKitComponentsIfNeeded]; - - // We break it up into a 44pt box for the touch, and find the closest link - // attribute-containing glyph to the center of the touch. - CGFloat squareSide = 44.f; - // Should be odd if you want to test the center of the touch. - NSInteger pointsOnASide = 3; - - // The distance between any 2 of the adjacent points - CGFloat pointSeparation = squareSide / pointsOnASide; - // These are for tracking which point we're on. We start with -pointsOnASide/2 - // and go to pointsOnASide/2. So if pointsOnASide=3, we go from -1 to 1. - NSInteger endIndex = pointsOnASide / 2; - NSInteger startIndex = -endIndex; - - BOOL stop = NO; - for (NSInteger i = startIndex; i <= endIndex && !stop; i++) { - for (NSInteger j = startIndex; j <= endIndex && !stop; j++) { - CGPoint currentPoint = CGPointMake(position.x + i * pointSeparation, - position.y + j * pointSeparation); - - // We ask the layout manager for the proper glyph at the touch point - NSUInteger glyphIndex = [_layoutManager glyphIndexForPoint:currentPoint - inTextContainer:_textContainer]; - - // If it's an invalid glyph, quit. - BOOL isValidGlyph = NO; - [_layoutManager glyphAtIndex:glyphIndex isValidIndex:&isValidGlyph]; - if (!isValidGlyph) { - continue; - } - - NSUInteger characterIndex = [_layoutManager characterIndexForGlyphAtIndex:glyphIndex]; - - CGRect glyphRect = [self _rectForGlyphAtIndex:glyphIndex - measureOption:ASTextNodeRendererMeasureOptionLineHeight]; - - // Sometimes TextKit plays jokes on us and returns glyphs that really - // aren't close to the point in question. Silly TextKit... - if (!CGRectContainsPoint(CGRectInset(glyphRect, -ASTextNodeRendererGlyphTouchHitSlop, -ASTextNodeRendererGlyphTouchHitSlop), currentPoint)) { - continue; - } - - block(characterIndex, glyphRect, &stop); - } - } -} - -#pragma mark - Truncation - -/* - * Calculates the intersection of the truncation message within the end of the - * last line. - * - * This is accomplished by temporarily adding an exclusion rect for the size of - * the truncation string at the end of the last line of text, and forcing the - * layout manager to re-layout and clip the text such that we get a natural - * clipping based on the settings of the layout manager. - */ -- (NSUInteger)_calculateCharacterIndexBeforeTruncationMessage -{ - ASDN::MutexLocker l(_textKitLock); - - CGRect constrainedRect = (CGRect){.size = _calculatedSize}; - - NSRange visibleGlyphRange = [_layoutManager glyphRangeForBoundingRect:constrainedRect inTextContainer:_textContainer]; - NSInteger lastVisibleGlyphIndex = (NSMaxRange(visibleGlyphRange) - 1); - CGRect lastLineRect = [_layoutManager lineFragmentRectForGlyphAtIndex:lastVisibleGlyphIndex effectiveRange:NULL]; - - // Calculate the bounding rectangle for the truncation message - ASTextKitComponents *truncationComponents = [ASTextKitComponents componentsWithAttributedSeedString:_truncationString - textContainerSize:constrainedRect.size]; - - // Size the truncation message - [truncationComponents.layoutManager ensureLayoutForTextContainer:truncationComponents.textContainer]; - NSRange truncationGlyphRange = [truncationComponents.layoutManager glyphRangeForTextContainer:truncationComponents.textContainer]; - CGRect truncationUsedRect = [truncationComponents.layoutManager boundingRectForGlyphRange:truncationGlyphRange inTextContainer:truncationComponents.textContainer]; - CGRect translatedTruncationRect = CGRectMake(CGRectGetMaxX(constrainedRect) - truncationUsedRect.size.width, - CGRectGetMinY(lastLineRect), - truncationUsedRect.size.width, - truncationUsedRect.size.height); - - // Determine which glyph is the first to be clipped / overlaps the truncation message. - CGPoint beginningOfTruncationMessage = CGPointMake(translatedTruncationRect.origin.x, CGRectGetMidY(translatedTruncationRect)); - NSUInteger firstClippedGlyphIndex = [_layoutManager glyphIndexForPoint:beginningOfTruncationMessage inTextContainer:_textContainer fractionOfDistanceThroughGlyph:NULL]; - NSUInteger firstCharacterIndexToReplace = [_layoutManager characterIndexForGlyphAtIndex:firstClippedGlyphIndex]; - ASDisplayNodeAssert(firstCharacterIndexToReplace != NSNotFound, @"The beginning of the truncation message exclusion rect (%@) didn't intersect any glyphs", NSStringFromCGPoint(beginningOfTruncationMessage)); - - // Break on word boundaries - return [self _findTruncationInsertionPointAtOrBeforeCharacterIndex:firstCharacterIndexToReplace]; -} - -+ (NSCharacterSet *)_truncationCharacterSet -{ - static NSCharacterSet *truncationCharacterSet; - static dispatch_once_t onceToken; - dispatch_once(&onceToken, ^{ - NSMutableCharacterSet *mutableCharacterSet = [[NSMutableCharacterSet alloc] init]; - [mutableCharacterSet formUnionWithCharacterSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]]; - [mutableCharacterSet addCharactersInString:@".,!?:;"]; - truncationCharacterSet = mutableCharacterSet; - }); - return truncationCharacterSet; -} - -/** - * @abstract Finds the first whitespace at or before the character index do we don't truncate in the middle of words - * @discussion If there are multiple whitespaces together (say a space and a newline), this will backtrack to the first one - */ -- (NSUInteger)_findTruncationInsertionPointAtOrBeforeCharacterIndex:(NSUInteger)firstCharacterIndexToReplace -{ - ASDN::MutexLocker l(_textKitLock); - // Don't attempt to truncate beyond the beginning of the string - if (firstCharacterIndexToReplace >= _textStorage.length) { - return 0; - } - - // Find the glyph range of the line fragment containing the first character to replace. - NSRange lineGlyphRange; - [_layoutManager lineFragmentRectForGlyphAtIndex:[_layoutManager glyphIndexForCharacterAtIndex:firstCharacterIndexToReplace] - effectiveRange:&lineGlyphRange]; - - // Look for the first whitespace from the end of the line, starting from the truncation point - NSUInteger startingSearchIndex = [_layoutManager characterIndexForGlyphAtIndex:lineGlyphRange.location]; - NSUInteger endingSearchIndex = firstCharacterIndexToReplace; - NSRange rangeToSearch = NSMakeRange(startingSearchIndex, (endingSearchIndex - startingSearchIndex)); - - NSCharacterSet *truncationCharacterSet = [[self class] _truncationCharacterSet]; - - NSRange rangeOfLastVisibleWhitespace = [_textStorage.string rangeOfCharacterFromSet:truncationCharacterSet - options:NSBackwardsSearch - range:rangeToSearch]; - - // Couldn't find a good place to truncate. Might be because there is no whitespace in the text, or we're dealing - // with a foreign language encoding. Settle for truncating at the original place, which may be mid-word. - if (rangeOfLastVisibleWhitespace.location == NSNotFound) { - return firstCharacterIndexToReplace; - } else { - return rangeOfLastVisibleWhitespace.location; - } -} - -#pragma mark - Drawing - -- (void)drawInRect:(CGRect)bounds inContext:(CGContextRef)context -{ - ASDisplayNodeAssert(context, @"This is no good without a context."); - UIGraphicsPushContext(context); - CGContextSaveGState(context); - - [self _initializeTextKitComponentsIfNeeded]; - NSRange glyphRange = [_layoutManager glyphRangeForTextContainer:_textContainer]; - { - ASDN::MutexLocker l(_textKitLock); - [_layoutManager drawBackgroundForGlyphRange:glyphRange atPoint:bounds.origin]; - [_layoutManager drawGlyphsForGlyphRange:glyphRange atPoint:bounds.origin]; - } - - CGContextRestoreGState(context); - UIGraphicsPopContext(); -} - -#pragma mark - String Ranges - -- (NSUInteger)lineCount -{ - ASDN::MutexLocker l(_textKitLock); - [self _initializeTextKitComponentsIfNeeded]; - - NSUInteger lineCount = 0; - for (NSRange lineRange = { 0, 0 }; NSMaxRange(lineRange) < [_layoutManager numberOfGlyphs]; lineCount++) { - [_layoutManager lineFragmentRectForGlyphAtIndex:NSMaxRange(lineRange) effectiveRange:&lineRange]; - } - return lineCount; -} - -- (NSRange)visibleRange -{ - ASDN::MutexLocker l(_textKitLock); - [self _initializeTextKitComponentsIfNeeded]; - return _visibleRange; -} - -- (NSRange)truncationStringCharacterRange -{ - ASDN::MutexLocker l(_textKitLock); - [self _initializeTextKitComponentsIfNeeded]; - return _truncationCharacterRange; -} - -@end diff --git a/AsyncDisplayKit/Details/ASTextNodeShadower.h b/AsyncDisplayKit/Details/ASTextNodeShadower.h deleted file mode 100644 index 59744897cc..0000000000 --- a/AsyncDisplayKit/Details/ASTextNodeShadower.h +++ /dev/null @@ -1,69 +0,0 @@ -/* Copyright (c) 2014-present, Facebook, Inc. - * All rights reserved. - * - * This source code is licensed under the BSD-style license found in the - * LICENSE file in the root directory of this source tree. An additional grant - * of patent rights can be found in the PATENTS file in the same directory. - */ - -#import -#import - - -/** - * @abstract Negates/inverts a UIEdgeInsets. - * @discussion Useful for undoing the application of shadow padding to a frame/bounds CGRect. - * For example, - * CGRect insetRect = UIEdgeInsetsRect(originalRect, insets); - * CGRect equalToOriginalRect = UIEdgeInsetsRect(originalRect, ASDNEdgeInsetsInvert(insets)); - */ -static inline UIEdgeInsets ASDNEdgeInsetsInvert(UIEdgeInsets insets) -{ - UIEdgeInsets invertedInsets = UIEdgeInsetsMake(-insets.top, -insets.left, -insets.bottom, -insets.right); - return invertedInsets; -} - -/** - * @abstract an immutable class for calculating shadow padding drawing a shadowed background for text - */ -@interface ASTextNodeShadower : NSObject - -- (instancetype)initWithShadowOffset:(CGSize)shadowOffset - shadowColor:(CGColorRef)shadowColor - shadowOpacity:(CGFloat)shadowOpacity - shadowRadius:(CGFloat)shadowRadius; - -/** - * @abstract The offset from the top-left corner at which the shadow starts. - * @discussion A positive width will move the shadow to the right. - * A positive height will move the shadow downwards. - */ -@property (nonatomic, readonly, assign) CGSize shadowOffset; - -//! CGColor in which the shadow is drawn -@property (nonatomic, readonly, assign) CGColorRef shadowColor; - -//! Alpha of the shadow -@property (nonatomic, readonly, assign) CGFloat shadowOpacity; - -//! Radius, in pixels -@property (nonatomic, readonly, assign) CGFloat shadowRadius; - -/** - * @abstract The edge insets which represent shadow padding - * @discussion Each edge inset is less than or equal to zero. - * - * Example: - * CGRect boundsWithoutShadowPadding; // Large enough to fit text, not large enough to fit the shadow as well - * UIEdgeInsets shadowPadding = [shadower shadowPadding]; - * CGRect boundsWithShadowPadding = UIEdgeInsetsRect(boundsWithoutShadowPadding, shadowPadding); - */ -- (UIEdgeInsets)shadowPadding; - -/** - * @abstract draws the shadow for text in the provided CGContext - * @discussion Call within the text node's +drawRect method - */ -- (void)setShadowInContext:(CGContextRef)context; - -@end diff --git a/AsyncDisplayKit/Details/ASTextNodeShadower.m b/AsyncDisplayKit/Details/ASTextNodeShadower.m deleted file mode 100644 index 13eb27070c..0000000000 --- a/AsyncDisplayKit/Details/ASTextNodeShadower.m +++ /dev/null @@ -1,90 +0,0 @@ -/* Copyright (c) 2014-present, Facebook, Inc. - * All rights reserved. - * - * This source code is licensed under the BSD-style license found in the - * LICENSE file in the root directory of this source tree. An additional grant - * of patent rights can be found in the PATENTS file in the same directory. - */ - -#import "ASTextNodeShadower.h" - -@implementation ASTextNodeShadower { - UIEdgeInsets _calculatedShadowPadding; -} - -- (instancetype)initWithShadowOffset:(CGSize)shadowOffset - shadowColor:(CGColorRef)shadowColor - shadowOpacity:(CGFloat)shadowOpacity - shadowRadius:(CGFloat)shadowRadius -{ - if (self = [super init]) { - _shadowOffset = shadowOffset; - _shadowColor = CGColorRetain(shadowColor); - _shadowOpacity = shadowOpacity; - _shadowRadius = shadowRadius; - _calculatedShadowPadding = UIEdgeInsetsMake(-INFINITY, -INFINITY, INFINITY, INFINITY); - } - return self; -} - -- (void)dealloc -{ - CGColorRelease(_shadowColor); -} - -/* - * This method is duplicated here because it gets called frequently, and we were - * wasting valuable time constructing a state object to ask it. - */ -- (BOOL)_shouldDrawShadow -{ - return _shadowOpacity != 0.0 && _shadowColor != NULL && (_shadowRadius != 0 || !CGSizeEqualToSize(_shadowOffset, CGSizeZero)); -} - -- (void)setShadowInContext:(CGContextRef)context -{ - if ([self _shouldDrawShadow]) { - CGColorRef textShadowColor = CGColorRetain(_shadowColor); - CGSize textShadowOffset = _shadowOffset; - CGFloat textShadowOpacity = _shadowOpacity; - CGFloat textShadowRadius = _shadowRadius; - - if (textShadowOpacity != 1.0) { - CGFloat inherentAlpha = CGColorGetAlpha(textShadowColor); - - CGColorRef oldTextShadowColor = textShadowColor; - textShadowColor = CGColorCreateCopyWithAlpha(textShadowColor, inherentAlpha * textShadowOpacity); - CGColorRelease(oldTextShadowColor); - } - - CGContextSetShadowWithColor(context, textShadowOffset, textShadowRadius, textShadowColor); - - CGColorRelease(textShadowColor); - } -} - - -- (UIEdgeInsets)shadowPadding -{ - if (_calculatedShadowPadding.top == -INFINITY) { - if (![self _shouldDrawShadow]) { - return UIEdgeInsetsZero; - } - - UIEdgeInsets shadowPadding = UIEdgeInsetsZero; - - // min values are expected to be negative for most typical shadowOffset and - // blurRadius settings: - shadowPadding.top = fminf(0.0f, _shadowOffset.height - _shadowRadius); - shadowPadding.left = fminf(0.0f, _shadowOffset.width - _shadowRadius); - - shadowPadding.bottom = fminf(0.0f, -_shadowOffset.height - _shadowRadius); - shadowPadding.right = fminf(0.0f, -_shadowOffset.width - _shadowRadius); - - _calculatedShadowPadding = shadowPadding; - } - - return _calculatedShadowPadding; -} - -@end diff --git a/AsyncDisplayKit/Layout/ASAsciiArtBoxCreator.h b/AsyncDisplayKit/Layout/ASAsciiArtBoxCreator.h index 198e792d1e..15d825a5ca 100644 --- a/AsyncDisplayKit/Layout/ASAsciiArtBoxCreator.h +++ b/AsyncDisplayKit/Layout/ASAsciiArtBoxCreator.h @@ -8,7 +8,7 @@ * */ -#import +#import @protocol ASLayoutableAsciiArtProtocol /** diff --git a/AsyncDisplayKit/Layout/ASAsciiArtBoxCreator.m b/AsyncDisplayKit/Layout/ASAsciiArtBoxCreator.m index ea9ef9490c..9aa3bd8fdb 100644 --- a/AsyncDisplayKit/Layout/ASAsciiArtBoxCreator.m +++ b/AsyncDisplayKit/Layout/ASAsciiArtBoxCreator.m @@ -8,7 +8,6 @@ * */ -@import UIKit; #import "ASAsciiArtBoxCreator.h" static const NSUInteger kDebugBoxPadding = 2; diff --git a/AsyncDisplayKit/TextKit/ASEqualityHashHelpers.h b/AsyncDisplayKit/TextKit/ASEqualityHashHelpers.h new file mode 100644 index 0000000000..c88106c893 --- /dev/null +++ b/AsyncDisplayKit/TextKit/ASEqualityHashHelpers.h @@ -0,0 +1,171 @@ +/* + * Copyright (c) 2014-present, Facebook, Inc. + * All rights reserved. + * + * This source code is licensed under the BSD-style license found in the + * LICENSE file in the root directory of this source tree. An additional grant + * of patent rights can be found in the PATENTS file in the same directory. + * + */ + +#import + +#import + +// From folly: +// This is the Hash128to64 function from Google's cityhash (available +// under the MIT License). We use it to reduce multiple 64 bit hashes +// into a single hash. +inline uint64_t ASHashCombine(const uint64_t upper, const uint64_t lower) { + // Murmur-inspired hashing. + const uint64_t kMul = 0x9ddfea08eb382d69ULL; + uint64_t a = (lower ^ upper) * kMul; + a ^= (a >> 47); + uint64_t b = (upper ^ a) * kMul; + b ^= (b >> 47); + b *= kMul; + return b; +} + +#if __LP64__ +inline size_t ASHash64ToNative(uint64_t key) { + return key; +} +#else + +// Thomas Wang downscaling hash function +inline size_t ASHash64ToNative(uint64_t key) { + key = (~key) + (key << 18); + key = key ^ (key >> 31); + key = key * 21; + key = key ^ (key >> 11); + key = key + (key << 6); + key = key ^ (key >> 22); + return (uint32_t) key; +} +#endif + +NSUInteger ASIntegerArrayHash(const NSUInteger *subhashes, NSUInteger count); + +namespace AS { + // Default is not an ObjC class + template + struct is_objc_class : std::false_type { }; + + // Conditionally enable this template specialization on whether T is convertible to id, makes the is_objc_class a true_type + template + struct is_objc_class::value, bool>::type> : std::true_type { }; + + // ASUtils::hash()(value) -> either std::hash if c++ or [o hash] if ObjC object. + template struct hash; + + // For non-objc types, defer to std::hash + template struct hash::value>::type> { + size_t operator ()(const T& a) { + return std::hash()(a); + } + }; + + // For objc types, call [o hash] + template struct hash::value>::type> { + size_t operator ()(id o) { + return [o hash]; + } + }; + + template struct is_equal; + + // For non-objc types use == operator + template struct is_equal::value>::type> { + bool operator ()(const T& a, const T& b) { + return a == b; + } + }; + + // For objc types, check pointer equality, then use -isEqual: + template struct is_equal::value>::type> { + bool operator ()(id a, id b) { + return a == b || [a isEqual:b]; + } + }; + +}; + +namespace ASTupleOperations +{ + // Recursive case (hash up to Index) + template ::value - 1> + struct _hash_helper + { + static size_t hash(Tuple const& tuple) + { + size_t prev = _hash_helper::hash(tuple); + using TypeForIndex = typename std::tuple_element::type; + size_t thisHash = AS::hash()(std::get(tuple)); + return ASHashCombine(prev, thisHash); + } + }; + + // Base case (hash 0th element) + template + struct _hash_helper + { + static size_t hash(Tuple const& tuple) + { + using TypeForIndex = typename std::tuple_element<0,Tuple>::type; + return AS::hash()(std::get<0>(tuple)); + } + }; + + // Recursive case (elements equal up to Index) + template ::value - 1> + struct _eq_helper + { + static bool equal(Tuple const& a, Tuple const& b) + { + bool prev = _eq_helper::equal(a, b); + using TypeForIndex = typename std::tuple_element::type; + auto aValue = std::get(a); + auto bValue = std::get(b); + return prev && AS::is_equal()(aValue, bValue); + } + }; + + // Base case (0th elements equal) + template + struct _eq_helper + { + static bool equal(Tuple const& a, Tuple const& b) + { + using TypeForIndex = typename std::tuple_element<0,Tuple>::type; + auto& aValue = std::get<0>(a); + auto& bValue = std::get<0>(b); + return AS::is_equal()(aValue, bValue); + } + }; + + + template struct hash; + + template + struct hash> + { + size_t operator()(std::tuple const& tt) const + { + return _hash_helper>::hash(tt); + } + }; + + + template struct equal_to; + + template + struct equal_to> + { + bool operator()(std::tuple const& a, std::tuple const& b) const + { + return _eq_helper>::equal(a, b); + } + }; + +} \ No newline at end of file diff --git a/AsyncDisplayKit/TextKit/ASTextKitAttributes.h b/AsyncDisplayKit/TextKit/ASTextKitAttributes.h new file mode 100755 index 0000000000..6cdd1cd9fc --- /dev/null +++ b/AsyncDisplayKit/TextKit/ASTextKitAttributes.h @@ -0,0 +1,129 @@ +/* + * Copyright (c) 2014-present, Facebook, Inc. + * All rights reserved. + * + * This source code is licensed under the BSD-style license found in the + * LICENSE file in the root directory of this source tree. An additional grant + * of patent rights can be found in the PATENTS file in the same directory. + * + */ + +#import + +#ifndef ComponentKit_ASTextKitAttributes_h +#define ComponentKit_ASTextKitAttributes_h + +@protocol ASTextKitTruncating; + +extern NSString *const ASTextKitTruncationAttributeName; +/** + Use ASTextKitEntityAttribute as the value of this attribute to embed a link or other interactable content inside the + text. + */ +extern NSString *const ASTextKitEntityAttributeName; + +static inline BOOL _objectsEqual(id obj1, id obj2) +{ + return obj1 == obj2 ? YES : [obj1 isEqual:obj2]; +} + +/** + All NSObject values in this struct should be copied when passed into the TextComponent. + */ +struct ASTextKitAttributes { + /** + The string to be drawn. ASTextKit will not augment this string with default colors, etc. so this must be complete. + */ + NSAttributedString *attributedString; + /** + The string to use as the truncation string, usually just "...". If you have a range of text you would like to + restrict highlighting to (for instance if you have "... Continue Reading", use the ASTextKitTruncationAttributeName + to mark the specific range of the string that should be highlightable. + */ + NSAttributedString *truncationAttributedString; + /** + This is the character set that ASTextKit should attempt to avoid leaving as a trailing character before your + truncation token. By default this set includes "\s\t\n\r.,!?:;" so you don't end up with ugly looking truncation + text like "Hey, this is some fancy Truncation!\n\n...". Instead it would be truncated as "Hey, this is some fancy + truncation...". This is not always possible. + + Set this to the empty charset if you want to just use the "dumb" truncation behavior. A nil value will be + substituted with the default described above. + */ + NSCharacterSet *avoidTailTruncationSet; + /** + The line-break mode to apply to the text. Since this also impacts how TextKit will attempt to truncate the text + in your string, we only support NSLineBreakByWordWrapping and NSLineBreakByCharWrapping. + */ + NSLineBreakMode lineBreakMode; + /** + The maximum number of lines to draw in the drawable region. Leave blank or set to 0 to define no maximum. + */ + NSUInteger maximumNumberOfLines; + /** + An array of UIBezierPath objects representing the exclusion paths inside the receiver's bounding rectangle. Default value: nil. + */ + NSArray *exclusionPaths; + /** + The shadow offset for any shadows applied to the text. The coordinate space for this is the same as UIKit, so a + positive width means towards the right, and a positive height means towards the bottom. + */ + CGSize shadowOffset; + /** + The color to use in drawing the text's shadow. + */ + UIColor *shadowColor; + /** + The opacity of the shadow from 0 to 1. + */ + CGFloat shadowOpacity; + /** + The radius that should be applied to the shadow blur. Larger values mean a larger, more blurred shadow. + */ + CGFloat shadowRadius; + /** + A pointer to a function that that returns a custom layout manager subclass. If nil, defaults to NSLayoutManager. + */ + NSLayoutManager *(*layoutManagerFactory)(void); + + /** + We provide an explicit copy function so we can use aggregate initializer syntax while providing copy semantics for + the NSObjects inside. + */ + const ASTextKitAttributes copy() const + { + return { + [attributedString copy], + [truncationAttributedString copy], + [avoidTailTruncationSet copy], + lineBreakMode, + maximumNumberOfLines, + [exclusionPaths copy], + shadowOffset, + [shadowColor copy], + shadowOpacity, + shadowRadius, + layoutManagerFactory + }; + }; + + bool operator==(const ASTextKitAttributes &other) const + { + // These comparisons are in a specific order to reduce the overall cost of this function. + return lineBreakMode == other.lineBreakMode + && maximumNumberOfLines == other.maximumNumberOfLines + && shadowOpacity == other.shadowOpacity + && shadowRadius == other.shadowRadius + && layoutManagerFactory == other.layoutManagerFactory + && CGSizeEqualToSize(shadowOffset, other.shadowOffset) + && _objectsEqual(exclusionPaths, other.exclusionPaths) + && _objectsEqual(avoidTailTruncationSet, other.avoidTailTruncationSet) + && _objectsEqual(shadowColor, other.shadowColor) + && _objectsEqual(attributedString, other.attributedString) + && _objectsEqual(truncationAttributedString, other.truncationAttributedString); + } + + size_t hash() const; +}; + +#endif diff --git a/AsyncDisplayKit/TextKit/ASTextKitAttributes.mm b/AsyncDisplayKit/TextKit/ASTextKitAttributes.mm new file mode 100755 index 0000000000..5ca015fd84 --- /dev/null +++ b/AsyncDisplayKit/TextKit/ASTextKitAttributes.mm @@ -0,0 +1,37 @@ +/* + * Copyright (c) 2014-present, Facebook, Inc. + * All rights reserved. + * + * This source code is licensed under the BSD-style license found in the + * LICENSE file in the root directory of this source tree. An additional grant + * of patent rights can be found in the PATENTS file in the same directory. + * + */ + +#import "ASTextKitAttributes.h" + +#import "ASEqualityHashHelpers.h" + +#include + +NSString *const ASTextKitTruncationAttributeName = @"ck_truncation"; +NSString *const ASTextKitEntityAttributeName = @"ck_entity"; + +size_t ASTextKitAttributes::hash() const +{ + NSUInteger subhashes[] = { + [attributedString hash], + [truncationAttributedString hash], + [avoidTailTruncationSet hash], + std::hash()((NSUInteger) layoutManagerFactory), + std::hash()(lineBreakMode), + std::hash()(maximumNumberOfLines), + [exclusionPaths hash], + std::hash()(shadowOffset.width), + std::hash()(shadowOffset.height), + [shadowColor hash], + std::hash()(shadowOpacity), + std::hash()(shadowRadius), + }; + return ASIntegerArrayHash(subhashes, sizeof(subhashes) / sizeof(subhashes[0])); +} diff --git a/AsyncDisplayKit/TextKit/ASTextKitContext.h b/AsyncDisplayKit/TextKit/ASTextKitContext.h new file mode 100755 index 0000000000..994082a2cf --- /dev/null +++ b/AsyncDisplayKit/TextKit/ASTextKitContext.h @@ -0,0 +1,46 @@ +/* + * Copyright (c) 2014-present, Facebook, Inc. + * All rights reserved. + * + * This source code is licensed under the BSD-style license found in the + * LICENSE file in the root directory of this source tree. An additional grant + * of patent rights can be found in the PATENTS file in the same directory. + * + */ + +#import + +/** + A threadsafe container for the TextKit components that ASTextKit uses to lay out and truncate its text. + + This container is the sole owner and manager of the TextKit classes. This is an important model because of major + thread safety issues inside vanilla TextKit. It provides a central locking location for accessing TextKit methods. + */ +@interface ASTextKitContext : NSObject + +/** + Initializes a context and its associated TextKit components. + + Initialization of TextKit components is a globally locking operation so be careful of bottlenecks with this class. + */ +- (instancetype)initWithAttributedString:(NSAttributedString *)attributedString + lineBreakMode:(NSLineBreakMode)lineBreakMode + maximumNumberOfLines:(NSUInteger)maximumNumberOfLines + exclusionPaths:(NSArray *)exclusionPaths + constrainedSize:(CGSize)constrainedSize + layoutManagerFactory:(NSLayoutManager*(*)(void))layoutManagerFactory; + +/** + All operations on TextKit values MUST occur within this locked context. Simultaneous access (even non-mutative) to + TextKit components may cause crashes. + + The block provided MUST not call out to client code from within its scope or it is possible for this to cause deadlocks + in your application. Use with EXTREME care. + + Callers MUST NOT keep a ref to these internal objects and use them later. This WILL cause crashes in your application. + */ +- (void)performBlockWithLockedTextKitComponents:(void (^)(NSLayoutManager *layoutManager, + NSTextStorage *textStorage, + NSTextContainer *textContainer))block; + +@end diff --git a/AsyncDisplayKit/TextKit/ASTextKitContext.mm b/AsyncDisplayKit/TextKit/ASTextKitContext.mm new file mode 100755 index 0000000000..5982006008 --- /dev/null +++ b/AsyncDisplayKit/TextKit/ASTextKitContext.mm @@ -0,0 +1,60 @@ +/* + * Copyright (c) 2014-present, Facebook, Inc. + * All rights reserved. + * + * This source code is licensed under the BSD-style license found in the + * LICENSE file in the root directory of this source tree. An additional grant + * of patent rights can be found in the PATENTS file in the same directory. + * + */ + +#import + +#import "ASTextKitContext.h" + +@implementation ASTextKitContext +{ + // All TextKit operations (even non-mutative ones) must be executed serially. + std::mutex _textKitMutex; + + NSLayoutManager *_layoutManager; + NSTextStorage *_textStorage; + NSTextContainer *_textContainer; +} + +- (instancetype)initWithAttributedString:(NSAttributedString *)attributedString + lineBreakMode:(NSLineBreakMode)lineBreakMode + maximumNumberOfLines:(NSUInteger)maximumNumberOfLines + exclusionPaths:(NSArray *)exclusionPaths + constrainedSize:(CGSize)constrainedSize + layoutManagerFactory:(NSLayoutManager*(*)(void))layoutManagerFactory +{ + if (self = [super init]) { + // Concurrently initialising TextKit components crashes (rdar://18448377) so we use a global lock. + static std::mutex __static_mutex; + std::lock_guard l(__static_mutex); + // Create the TextKit component stack with our default configuration. + _textStorage = (attributedString ? [[NSTextStorage alloc] initWithAttributedString:attributedString] : [[NSTextStorage alloc] init]); + _layoutManager = layoutManagerFactory ? layoutManagerFactory() : [[NSLayoutManager alloc] init]; + _layoutManager.usesFontLeading = NO; + [_textStorage addLayoutManager:_layoutManager]; + _textContainer = [[NSTextContainer alloc] initWithSize:constrainedSize]; + // We want the text laid out up to the very edges of the container. + _textContainer.lineFragmentPadding = 0; + _textContainer.lineBreakMode = lineBreakMode; + _textContainer.maximumNumberOfLines = maximumNumberOfLines; + _textContainer.exclusionPaths = exclusionPaths; + [_layoutManager addTextContainer:_textContainer]; + } + return self; +} + +- (void)performBlockWithLockedTextKitComponents:(void (^)(NSLayoutManager *, + NSTextStorage *, + NSTextContainer *))block +{ + std::lock_guard l(_textKitMutex); + block(_layoutManager, _textStorage, _textContainer); +} + +@end diff --git a/AsyncDisplayKit/Details/ASTextNodeCoreTextAdditions.h b/AsyncDisplayKit/TextKit/ASTextKitCoreTextAdditions.h similarity index 98% rename from AsyncDisplayKit/Details/ASTextNodeCoreTextAdditions.h rename to AsyncDisplayKit/TextKit/ASTextKitCoreTextAdditions.h index ce74957e22..10f0cf4052 100644 --- a/AsyncDisplayKit/Details/ASTextNodeCoreTextAdditions.h +++ b/AsyncDisplayKit/TextKit/ASTextKitCoreTextAdditions.h @@ -63,7 +63,7 @@ ASDISPLAYNODE_EXTERN_C_END #pragma mark - #pragma mark - -@interface NSParagraphStyle (ASTextNodeCoreTextAdditions) +@interface NSParagraphStyle (ASTextKitCoreTextAdditions) /** @abstract Returns an NSParagraphStyle initialized with the paragraph specifiers from the given CTParagraphStyleRef. diff --git a/AsyncDisplayKit/Details/ASTextNodeCoreTextAdditions.m b/AsyncDisplayKit/TextKit/ASTextKitCoreTextAdditions.m similarity index 99% rename from AsyncDisplayKit/Details/ASTextNodeCoreTextAdditions.m rename to AsyncDisplayKit/TextKit/ASTextKitCoreTextAdditions.m index 5ba091b3ea..e317559572 100644 --- a/AsyncDisplayKit/Details/ASTextNodeCoreTextAdditions.m +++ b/AsyncDisplayKit/TextKit/ASTextKitCoreTextAdditions.m @@ -6,7 +6,7 @@ * of patent rights can be found in the PATENTS file in the same directory. */ -#import "ASTextNodeCoreTextAdditions.h" +#import "ASTextKitCoreTextAdditions.h" #import #import @@ -155,7 +155,7 @@ NSAttributedString *ASCleanseAttributedStringOfCoreTextAttributes(NSAttributedSt #pragma mark - #pragma mark - -@implementation NSParagraphStyle (ASTextNodeCoreTextAdditions) +@implementation NSParagraphStyle (ASTextKitCoreTextAdditions) + (instancetype)paragraphStyleWithCTParagraphStyle:(CTParagraphStyleRef)coreTextParagraphStyle; { diff --git a/AsyncDisplayKit/TextKit/ASTextKitEntityAttribute.h b/AsyncDisplayKit/TextKit/ASTextKitEntityAttribute.h new file mode 100755 index 0000000000..c87f30e6b5 --- /dev/null +++ b/AsyncDisplayKit/TextKit/ASTextKitEntityAttribute.h @@ -0,0 +1,28 @@ +/* + * Copyright (c) 2014-present, Facebook, Inc. + * All rights reserved. + * + * This source code is licensed under the BSD-style license found in the + * LICENSE file in the root directory of this source tree. An additional grant + * of patent rights can be found in the PATENTS file in the same directory. + * + */ + +#import + +/** + The object that should be embedded with ASTextKitEntityAttributeName. Please note that the entity you provide MUST + implement a proper hash and isEqual function or your application performance will grind to a halt due to + NSMutableAttributedString's usage of a global hash table of all attributes. This means the entity should NOT be a + Foundation Collection (NSArray, NSDictionary, NSSet, etc.) since their hash function is a simple count of the values + in the collection, which causes pathological performance problems deep inside NSAttributedString's implementation. + + rdar://19352367 + */ +@interface ASTextKitEntityAttribute : NSObject + +@property (nonatomic, strong, readonly) id entity; + +- (instancetype)initWithEntity:(id)entity; + +@end diff --git a/AsyncDisplayKit/TextKit/ASTextKitEntityAttribute.m b/AsyncDisplayKit/TextKit/ASTextKitEntityAttribute.m new file mode 100755 index 0000000000..63d0376975 --- /dev/null +++ b/AsyncDisplayKit/TextKit/ASTextKitEntityAttribute.m @@ -0,0 +1,40 @@ +/* + * Copyright (c) 2014-present, Facebook, Inc. + * All rights reserved. + * + * This source code is licensed under the BSD-style license found in the + * LICENSE file in the root directory of this source tree. An additional grant + * of patent rights can be found in the PATENTS file in the same directory. + * + */ + +#import "ASTextKitEntityAttribute.h" + +@implementation ASTextKitEntityAttribute + +- (instancetype)initWithEntity:(id)entity +{ + if (self = [super init]) { + _entity = entity; + } + return self; +} + +- (NSUInteger)hash +{ + return [_entity hash]; +} + +- (BOOL)isEqual:(id)object +{ + if (self == object) { + return YES; + } + if (![object isKindOfClass:[self class]]) { + return NO; + } + ASTextKitEntityAttribute *other = (ASTextKitEntityAttribute *)object; + return _entity == other.entity || [_entity isEqual:other.entity]; +} + +@end diff --git a/AsyncDisplayKit/Details/ASTextNodeTextKitHelpers.h b/AsyncDisplayKit/TextKit/ASTextKitHelpers.h similarity index 100% rename from AsyncDisplayKit/Details/ASTextNodeTextKitHelpers.h rename to AsyncDisplayKit/TextKit/ASTextKitHelpers.h diff --git a/AsyncDisplayKit/Details/ASTextNodeTextKitHelpers.mm b/AsyncDisplayKit/TextKit/ASTextKitHelpers.mm similarity index 98% rename from AsyncDisplayKit/Details/ASTextNodeTextKitHelpers.mm rename to AsyncDisplayKit/TextKit/ASTextKitHelpers.mm index 3a6b603c3b..82252b1b7f 100644 --- a/AsyncDisplayKit/Details/ASTextNodeTextKitHelpers.mm +++ b/AsyncDisplayKit/TextKit/ASTextKitHelpers.mm @@ -6,7 +6,7 @@ * of patent rights can be found in the PATENTS file in the same directory. */ -#import "ASTextNodeTextKitHelpers.h" +#import "ASTextKitHelpers.h" @interface ASTextKitComponents () diff --git a/AsyncDisplayKit/TextKit/ASTextKitRenderer+Positioning.h b/AsyncDisplayKit/TextKit/ASTextKitRenderer+Positioning.h new file mode 100755 index 0000000000..a0713e5790 --- /dev/null +++ b/AsyncDisplayKit/TextKit/ASTextKitRenderer+Positioning.h @@ -0,0 +1,103 @@ +/* + * Copyright (c) 2014-present, Facebook, Inc. + * All rights reserved. + * + * This source code is licensed under the BSD-style license found in the + * LICENSE file in the root directory of this source tree. An additional grant + * of patent rights can be found in the PATENTS file in the same directory. + * + */ + +#import "ASTextKitRenderer.h" + +typedef void (^as_text_component_index_block_t)(NSUInteger characterIndex, + CGRect glyphBoundingRect, + BOOL *stop); + +/** + Measure options are used to specify which type of line height measurement to use. + + ASTextNodeRendererMeasureOptionLineHeight is faster and will give the height from the baseline to the next line. + + ASTextNodeRendererMeasureOptionCapHeight is a more nuanced measure of the glyphs in the given range that attempts to + produce a visually balanced rectangle above and below the glyphs to produce nice looking text highlights. + + ASTextNodeRendererMeasureOptionBlock uses the cap height option to generate each glyph index, but combines all but the + first and last line rect into a single block. Looks nice for multiline selection. + */ +typedef NS_ENUM(NSUInteger, ASTextKitRendererMeasureOption) { + ASTextKitRendererMeasureOptionLineHeight, + ASTextKitRendererMeasureOptionCapHeight, + ASTextKitRendererMeasureOptionBlock +}; + +@interface ASTextKitRenderer (Positioning) + +/** + Returns the bounding rect for the given character range. + + @param textRange The character range for which the bounding rect will be computed. Should be within the range of the + attributedString of this renderer. + + @discussion In the external, shadowed coordinate space. + */ +- (CGRect)frameForTextRange:(NSRange)textRange; + +/** + Returns an array of rects representing the lines in the given character range + + @param textRange The character range for which the rects will be computed. Should be within the range of the + attributedString of this renderer. + @param measureOption The measure option to use for construction of the rects. See ASTextKitRendererMeasureOption + docs for usage. + + @discussion This method is useful for providing highlighting text. Returned rects are in the coordinate space of the + renderer. + + Triggers initialization of textkit components, truncation, and sizing. + */ +- (NSArray *)rectsForTextRange:(NSRange)textRange + measureOption:(ASTextKitRendererMeasureOption)measureOption; + +/** + Enumerate the text character indexes at a position within the coordinate space of the renderer. + + @param position The point in the shadowed coordinate space at which text indexes will be enumerated. + @param block The block that will be executed for each index identified that may correspond to the given position. The + block is given the character index that corresponds to the glyph at each index in question, as well as the bounding + rect for that glyph. + + @discussion Glyph location based on a touch point is not an exact science because user touches are not well-represented + by a simple point, especially in the context of link-heavy text. So we have this method to make it a bit easier. This + method checks a grid of candidate positions around the touch point you give it, and computes the bounding rect of the + glyph corresponding to the character index given. + + The bounding rect of the glyph can be used to identify the best glyph index that corresponds to your touch. For + instance, comparing centroidal distance from the glyph bounding rect to the touch center is useful for identifying + which link a user actually intended to select. + + Triggers initialization of textkit components, truncation, and sizing. + */ +- (void)enumerateTextIndexesAtPosition:(CGPoint)position + usingBlock:(as_text_component_index_block_t)block; + +/** + Returns the single text index whose glyph's centroid is closest to the given position. + + @param position The point in the shadowed coordinate space that should be checked. + + @discussion This will use the grid enumeration function above, `enumerateTextIndexesAtPosition...`, in order to find + the closest glyph, so it is possible that a glyph could be missed, but ultimately unlikely. + */ +- (NSUInteger)nearestTextIndexAtPosition:(CGPoint)position; + +/** + Returns the trailing rect unused by the renderer in the last rendered line. + + @discussion In the external shadowed coordinate space. + + Triggers initialization of textkit components, truncation, and sizing. + */ +- (CGRect)trailingRect; + +@end diff --git a/AsyncDisplayKit/TextKit/ASTextKitRenderer+Positioning.mm b/AsyncDisplayKit/TextKit/ASTextKitRenderer+Positioning.mm new file mode 100755 index 0000000000..10cb53e7d5 --- /dev/null +++ b/AsyncDisplayKit/TextKit/ASTextKitRenderer+Positioning.mm @@ -0,0 +1,374 @@ +/* + * Copyright (c) 2014-present, Facebook, Inc. + * All rights reserved. + * + * This source code is licensed under the BSD-style license found in the + * LICENSE file in the root directory of this source tree. An additional grant + * of patent rights can be found in the PATENTS file in the same directory. + * + */ + +#import "ASTextKitRenderer+Positioning.h" + +#import + +#import "ASAssert.h" + +#import "ASTextKitContext.h" +#import "ASTextKitShadower.h" + +static const CGFloat ASTextKitRendererGlyphTouchHitSlop = 5.0; +static const CGFloat ASTextKitRendererTextCapHeightPadding = 1.3; + +@implementation ASTextKitRenderer (Tracking) + +- (NSArray *)rectsForTextRange:(NSRange)textRange + measureOption:(ASTextKitRendererMeasureOption)measureOption +{ + __block NSArray *textRects = @[]; + [self.context performBlockWithLockedTextKitComponents:^(NSLayoutManager *layoutManager, NSTextStorage *textStorage, NSTextContainer *textContainer) { + BOOL textRangeIsValid = (NSMaxRange(textRange) <= [textStorage length]); + ASDisplayNodeCAssertTrue(textRangeIsValid); + if (!textRangeIsValid) { + return; + } + + // Used for block measure option + __block CGRect firstRect = CGRectNull; + __block CGRect lastRect = CGRectNull; + __block CGRect blockRect = CGRectNull; + NSMutableArray *mutableTextRects = [NSMutableArray array]; + + NSString *string = textStorage.string; + + NSRange totalGlyphRange = [layoutManager glyphRangeForCharacterRange:textRange actualCharacterRange:NULL]; + + [layoutManager enumerateLineFragmentsForGlyphRange:totalGlyphRange usingBlock:^(CGRect rect, + CGRect usedRect, + NSTextContainer *innerTextContainer, + NSRange glyphRange, + BOOL *stop) { + + CGRect lineRect = CGRectNull; + // If we're empty, don't bother looping through glyphs, use the default. + if (CGRectIsEmpty(usedRect)) { + lineRect = usedRect; + } else { + // TextKit's bounding rect computations are just a touch off, so we actually + // compose the rects by hand from the center of the given TextKit bounds and + // imposing the font attributes returned by the glyph's font. + NSRange lineGlyphRange = NSIntersectionRange(totalGlyphRange, glyphRange); + for (NSUInteger i = lineGlyphRange.location; i < NSMaxRange(lineGlyphRange) && i < string.length; i++) { + // We grab the properly sized rect for the glyph + CGRect properGlyphRect = [self _internalRectForGlyphAtIndex:i + measureOption:measureOption + layoutManager:layoutManager + textContainer:textContainer + textStorage:textStorage]; + + // Don't count empty glyphs towards our line rect. + if (!CGRectIsEmpty(properGlyphRect)) { + lineRect = CGRectIsNull(lineRect) ? properGlyphRect + : CGRectUnion(lineRect, properGlyphRect); + } + } + } + + if (!CGRectIsNull(lineRect)) { + if (measureOption == ASTextKitRendererMeasureOptionBlock) { + // For the block measurement option we store the first & last rect as + // special cases, then merge everything else into a single block rect + if (CGRectIsNull(firstRect)) { + // We don't have a firstRect, so we must be on the first line. + firstRect = lineRect; + } else if(CGRectIsNull(lastRect)) { + // We don't have a lastRect, but we do have a firstRect, so we must + // be on the second line. No need to merge in the blockRect just yet + lastRect = lineRect; + } else if(CGRectIsNull(blockRect)) { + // We have both a first and last rect, so we must be on the third line + // we don't have any blockRect to merge it into, so we just set it + // directly. + blockRect = lastRect; + lastRect = lineRect; + } else { + // Everything is already set, so we just merge this line into the + // block. + blockRect = CGRectUnion(blockRect, lastRect); + lastRect = lineRect; + } + } else { + // If the block option isn't being used then each line is being treated + // individually. + [mutableTextRects addObject:[NSValue valueWithCGRect:[self.shadower offsetRectWithInternalRect:lineRect]]]; + } + } + }]; + + if (measureOption == ASTextKitRendererMeasureOptionBlock) { + // Block measure option is handled differently with just 3 vars for the entire range. + if (!CGRectIsNull(firstRect)) { + if (!CGRectIsNull(blockRect)) { + CGFloat rightEdge = MAX(CGRectGetMaxX(blockRect), CGRectGetMaxX(lastRect)); + if (rightEdge > CGRectGetMaxX(firstRect)) { + // Force the right side of the first rect to properly align with the + // right side of the rightmost of the block and last rect + firstRect.size.width += rightEdge - CGRectGetMaxX(firstRect); + } + + // Force the left side of the block rect to properly align with the + // left side of the leftmost of the first and last rect + blockRect.origin.x = MIN(CGRectGetMinX(firstRect), CGRectGetMinX(lastRect)); + // Force the right side of the block rect to properly align with the + // right side of the rightmost of the first and last rect + blockRect.size.width += MAX(CGRectGetMaxX(firstRect), CGRectGetMaxX(lastRect)) - CGRectGetMaxX(blockRect); + } + if (!CGRectIsNull(lastRect)) { + // Force the left edge of the last rect to properly align with the + // left side of the leftmost of the first and block rect, if necessary. + CGFloat leftEdge = MIN(CGRectGetMinX(blockRect), CGRectGetMinX(firstRect)); + CGFloat lastRectNudgeAmount = MAX(CGRectGetMinX(lastRect) - leftEdge, 0); + lastRect.origin.x = MIN(leftEdge, CGRectGetMinX(lastRect)); + lastRect.size.width += lastRectNudgeAmount; + } + + [mutableTextRects addObject:[NSValue valueWithCGRect:[self.shadower offsetRectWithInternalRect:firstRect]]]; + } + if (!CGRectIsNull(blockRect)) { + [mutableTextRects addObject:[NSValue valueWithCGRect:[self.shadower offsetRectWithInternalRect:blockRect]]]; + } + if (!CGRectIsNull(lastRect)) { + [mutableTextRects addObject:[NSValue valueWithCGRect:[self.shadower offsetRectWithInternalRect:lastRect]]]; + } + } + textRects = mutableTextRects; + }]; + + return textRects; +} + +- (NSUInteger)nearestTextIndexAtPosition:(CGPoint)position +{ + // Check in a 9-point region around the actual touch point so we make sure + // we get the best attribute for the touch. + __block CGFloat minimumGlyphDistance = CGFLOAT_MAX; + __block NSUInteger minimumGlyphCharacterIndex = NSNotFound; + + [self enumerateTextIndexesAtPosition:position usingBlock:^(NSUInteger characterIndex, CGRect glyphBoundingRect, BOOL *stop) { + CGPoint glyphLocation = CGPointMake(CGRectGetMidX(glyphBoundingRect), CGRectGetMidY(glyphBoundingRect)); + CGFloat currentDistance = sqrtf(powf(position.x - glyphLocation.x, 2.f) + powf(position.y - glyphLocation.y, 2.f)); + if (currentDistance < minimumGlyphDistance) { + minimumGlyphDistance = currentDistance; + minimumGlyphCharacterIndex = characterIndex; + } + }]; + return minimumGlyphCharacterIndex; +} + +/** + Measured from the internal coordinate space of the context, not accounting for shadow offsets. Actually uses CoreText + as an approximation to work around problems in TextKit's glyph sizing. + */ +- (CGRect)_internalRectForGlyphAtIndex:(NSUInteger)glyphIndex + measureOption:(ASTextKitRendererMeasureOption)measureOption + layoutManager:(NSLayoutManager *)layoutManager + textContainer:(NSTextContainer *)textContainer + textStorage:(NSTextStorage *)textStorage +{ + NSUInteger charIndex = [layoutManager characterIndexForGlyphAtIndex:glyphIndex]; + CGGlyph glyph = [layoutManager glyphAtIndex:glyphIndex]; + CTFontRef font = (__bridge_retained CTFontRef)[textStorage attribute:NSFontAttributeName + atIndex:charIndex + effectiveRange:NULL]; + if (font == nil) { + font = (__bridge_retained CTFontRef)[UIFont systemFontOfSize:12.0]; + } + + // Glyph Advance + // +-------------------------+ + // | | + // | | + // +------------------------+--|-------------------------|--+-----------+-----+ What TextKit returns sometimes + // | | | XXXXXXXXXXX + | | | (approx. correct height, but + // | ---------|--+---------+ XXX XXXX +|-----------|-----| sometimes inaccurate bounding + // | | | XXX XXXXX| | | widths) + // | | | XX XX | | | + // | | | XX | | | + // | | | XXX | | | + // | | | XX | | | + // | | | XXXXXXXXXXX | | | + // | Cap Height->| | XX | | | + // | | | XX | Ascent-->| | + // | | | XX | | | + // | | | XX | | | + // | | | X | | | + // | | | X | | | + // | | | X | | | + // | | | XX | | | + // | | | X | | | + // | ---------|-------+ X +-------------------------------------| + // | | XX | | + // | | X | | + // | | XX Descent------>| | + // | | XXXXXX | | + // | | XXX | | + // +------------------------+-------------------------------------------------+ + // | + // +--+Actual bounding box + + CGRect glyphRect = [layoutManager boundingRectForGlyphRange:NSMakeRange(glyphIndex, 1) + inTextContainer:textContainer]; + + // If it is a NSTextAttachment, we don't have the matched glyph and use width of glyphRect instead of advance. + CGFloat advance = (glyph == kCGFontIndexInvalid) ? glyphRect.size.width : CTFontGetAdvancesForGlyphs(font, kCTFontOrientationHorizontal, &glyph, NULL, 1); + + // We treat the center of the glyph's bounding box as the center of our new rect + CGPoint glyphCenter = CGPointMake(CGRectGetMidX(glyphRect), CGRectGetMidY(glyphRect)); + + CGRect properGlyphRect; + if (measureOption == ASTextKitRendererMeasureOptionCapHeight + || measureOption == ASTextKitRendererMeasureOptionBlock) { + CGFloat ascent = CTFontGetAscent(font); + CGFloat descent = CTFontGetDescent(font); + CGFloat capHeight = CTFontGetCapHeight(font); + CGFloat leading = CTFontGetLeading(font); + CGFloat glyphHeight = ascent + descent; + + // For visual balance, we add the cap height padding above the cap, and + // below the baseline, we scale by the descent so it grows with the size of + // the text. + CGFloat topPadding = ASTextKitRendererTextCapHeightPadding * descent; + CGFloat bottomPadding = topPadding; + + properGlyphRect = CGRectMake(glyphCenter.x - advance * 0.5, + glyphCenter.y - glyphHeight * 0.5 + (ascent - capHeight) - topPadding + leading, + advance, + capHeight + topPadding + bottomPadding); + } else { + // We are just measuring the line heights here, so we can use the + // heights used by TextKit, which tend to be pretty good. + properGlyphRect = CGRectMake(glyphCenter.x - advance * 0.5, + glyphRect.origin.y, + advance, + glyphRect.size.height); + } + + CFRelease(font); + + return properGlyphRect; +} + +- (void)enumerateTextIndexesAtPosition:(CGPoint)externalPosition usingBlock:(as_text_component_index_block_t)block +{ + // This method is a little complex because it has to call out to client code from inside an enumeration that needs + // to achieve a lock on the textkit components. It cannot call out to client code from within that lock so we just + // perform the textkit-locked ops inside the locked context. + ASTextKitContext *lockingContext = self.context; + CGPoint internalPosition = [self.shadower offsetPointWithExternalPoint:externalPosition]; + __block BOOL invalidPosition = NO; + [lockingContext performBlockWithLockedTextKitComponents:^(NSLayoutManager *layoutManager, NSTextStorage *textStorage, NSTextContainer *textContainer) { + invalidPosition = internalPosition.x > textContainer.size.width + || internalPosition.y > textContainer.size.height + || block == NULL; + }]; + if (invalidPosition) { + // Short circuit if the position is outside the size of this renderer, or if the block is null. + return; + } + + // We break it up into a 44pt box for the touch, and find the closest link attribute-containing glyph to the center of + // the touch. + CGFloat squareSide = 44.f; + // Should be odd if you want to test the center of the touch. + NSInteger pointsOnASide = 3; + + // The distance between any 2 of the adjacent points + CGFloat pointSeparation = squareSide / pointsOnASide; + // These are for tracking which point we're on. We start with -pointsOnASide/2 and go to pointsOnASide/2. So if + // pointsOnASide=3, we go from -1 to 1. + NSInteger endIndex = pointsOnASide / 2; + NSInteger startIndex = -endIndex; + + BOOL stop = NO; + for (NSInteger i = startIndex; i <= endIndex && !stop; i++) { + for (NSInteger j = startIndex; j <= endIndex && !stop; j++) { + CGPoint currentPoint = CGPointMake(internalPosition.x + i * pointSeparation, + internalPosition.y + j * pointSeparation); + + __block NSUInteger characterIndex = NSNotFound; + __block BOOL isValidGlyph = NO; + __block CGRect glyphRect = CGRectNull; + + [lockingContext performBlockWithLockedTextKitComponents:^(NSLayoutManager *layoutManager, NSTextStorage *textStorage, NSTextContainer *textContainer) { + // We ask the layout manager for the proper glyph at the touch point + NSUInteger glyphIndex = [layoutManager glyphIndexForPoint:currentPoint + inTextContainer:textContainer]; + + // If it's an invalid glyph, quit. + + [layoutManager glyphAtIndex:glyphIndex isValidIndex:&isValidGlyph]; + if (!isValidGlyph) { + return; + } + + characterIndex = [layoutManager characterIndexForGlyphAtIndex:glyphIndex]; + + glyphRect = [self _internalRectForGlyphAtIndex:glyphIndex + measureOption:ASTextKitRendererMeasureOptionLineHeight + layoutManager:layoutManager + textContainer:textContainer + textStorage:textStorage]; + }]; + + // Sometimes TextKit plays jokes on us and returns glyphs that really aren't close to the point in question. + // Silly TextKit... + if (!isValidGlyph || !CGRectContainsPoint(CGRectInset(glyphRect, -ASTextKitRendererGlyphTouchHitSlop, -ASTextKitRendererGlyphTouchHitSlop), currentPoint)) { + continue; + } + + block(characterIndex, [self.shadower offsetRectWithInternalRect:glyphRect], &stop); + } + } +} + +- (CGRect)trailingRect +{ + __block CGRect trailingRect = CGRectNull; + [self.context performBlockWithLockedTextKitComponents:^(NSLayoutManager *layoutManager, NSTextStorage *textStorage, NSTextContainer *textContainer) { + CGSize calculatedSize = textContainer.size; + // If have an empty string, then our whole bounds constitute trailing space. + if ([textStorage length] == 0) { + trailingRect = CGRectMake(0, 0, calculatedSize.width, calculatedSize.height); + return; + } + + // Take everything after our final character as trailing space. + NSArray *finalRects = [self rectsForTextRange:NSMakeRange([textStorage length] - 1, 1) measureOption:ASTextKitRendererMeasureOptionLineHeight]; + CGRect finalGlyphRect = [[finalRects lastObject] CGRectValue]; + CGPoint origin = CGPointMake(CGRectGetMaxX(finalGlyphRect), CGRectGetMinY(finalGlyphRect)); + CGSize size = CGSizeMake(calculatedSize.width - origin.x, calculatedSize.height - origin.y); + trailingRect = (CGRect){origin, size}; + }]; + return trailingRect; +} + +- (CGRect)frameForTextRange:(NSRange)textRange +{ + __block CGRect textRect = CGRectNull; + [self.context performBlockWithLockedTextKitComponents:^(NSLayoutManager *layoutManager, NSTextStorage *textStorage, NSTextContainer *textContainer) { + // Bail on invalid range. + if (NSMaxRange(textRange) > [textStorage length]) { + ASDisplayNodeCFailAssert(@"Invalid range"); + return; + } + + // Force glyph generation and layout. + [layoutManager ensureLayoutForTextContainer:textContainer]; + + NSRange glyphRange = [layoutManager glyphRangeForCharacterRange:textRange actualCharacterRange:NULL]; + textRect = [layoutManager boundingRectForGlyphRange:glyphRange inTextContainer:textContainer]; + }]; + return textRect; +} + +@end diff --git a/AsyncDisplayKit/TextKit/ASTextKitRenderer+TextChecking.h b/AsyncDisplayKit/TextKit/ASTextKitRenderer+TextChecking.h new file mode 100755 index 0000000000..0e07ddf378 --- /dev/null +++ b/AsyncDisplayKit/TextKit/ASTextKitRenderer+TextChecking.h @@ -0,0 +1,29 @@ +/* + * Copyright (c) 2014-present, Facebook, Inc. + * All rights reserved. + * + * This source code is licensed under the BSD-style license found in the + * LICENSE file in the root directory of this source tree. An additional grant + * of patent rights can be found in the PATENTS file in the same directory. + * + */ + +#import "ASTextKitRenderer.h" + +/** + Application extensions to NSTextCheckingType. We're allowed to do this (see NSTextCheckingAllCustomTypes). + */ +static uint64_t const ASTextKitTextCheckingTypeEntity = 1ULL << 33; +static uint64_t const ASTextKitTextCheckingTypeTruncation = 1ULL << 34; + +@class ASTextKitEntityAttribute; + +@interface ASTextKitTextCheckingResult : NSTextCheckingResult +@property (nonatomic, strong, readonly) ASTextKitEntityAttribute *entityAttribute; +@end + +@interface ASTextKitRenderer (TextChecking) + +- (NSTextCheckingResult *)textCheckingResultAtPoint:(CGPoint)point; + +@end diff --git a/AsyncDisplayKit/TextKit/ASTextKitRenderer+TextChecking.mm b/AsyncDisplayKit/TextKit/ASTextKitRenderer+TextChecking.mm new file mode 100755 index 0000000000..9913fcc996 --- /dev/null +++ b/AsyncDisplayKit/TextKit/ASTextKitRenderer+TextChecking.mm @@ -0,0 +1,102 @@ +/* + * Copyright (c) 2014-present, Facebook, Inc. + * All rights reserved. + * + * This source code is licensed under the BSD-style license found in the + * LICENSE file in the root directory of this source tree. An additional grant + * of patent rights can be found in the PATENTS file in the same directory. + * + */ + +#import "ASTextKitRenderer+TextChecking.h" + +#import "ASTextKitAttributes.h" +#import "ASTextKitEntityAttribute.h" +#import "ASTextKitRenderer+Positioning.h" +#import "ASTextKitTailTruncater.h" + +@implementation ASTextKitTextCheckingResult + +{ + // Be explicit about the fact that we are overriding the super class' implementation of -range and -resultType + // and substituting our own custom values. (We could use @synthesize to make these ivars, but our linter correctly + // complains; it's weird to use @synthesize for properties that are redeclared on top of an original declaration in + // the superclass. We only do it here because NSTextCheckingResult doesn't expose an initializer, which is silly.) + NSRange _rangeOverride; + NSTextCheckingType _resultTypeOverride; +} + +- (instancetype)initWithType:(NSTextCheckingType)type + entityAttribute:(ASTextKitEntityAttribute *)entityAttribute + range:(NSRange)range +{ + if ((self = [super init])) { + _resultTypeOverride = type; + _rangeOverride = range; + _entityAttribute = entityAttribute; + } + return self; +} + +- (NSTextCheckingType)resultType +{ + return _resultTypeOverride; +} + +- (NSRange)range +{ + return _rangeOverride; +} + +@end + +@implementation ASTextKitRenderer (TextChecking) + +- (NSTextCheckingResult *)textCheckingResultAtPoint:(CGPoint)point +{ + __block NSTextCheckingResult *result = nil; + NSAttributedString *attributedString = self.attributes.attributedString; + NSAttributedString *truncationAttributedString = self.attributes.truncationAttributedString; + + // get the index of the last character, so we can handle text in the truncation token + NSRange visibleRange = self.truncater.visibleRanges[0]; + __block NSRange truncationTokenRange = { NSNotFound, 0 }; + + [truncationAttributedString enumerateAttribute:ASTextKitTruncationAttributeName inRange:NSMakeRange(0, truncationAttributedString.length) + options:0 + usingBlock:^(id value, NSRange range, BOOL *stop) { + if (value != nil && range.length > 0) { + truncationTokenRange = range; + } + }]; + + if (truncationTokenRange.location == NSNotFound) { + // The truncation string didn't specify a substring which should be highlighted, so we just highlight it all + truncationTokenRange = { 0, self.attributes.truncationAttributedString.length }; + } + + truncationTokenRange.location += NSMaxRange(visibleRange); + + [self enumerateTextIndexesAtPosition:point usingBlock:^(NSUInteger index, CGRect glyphBoundingRect, BOOL *stop){ + if (index >= truncationTokenRange.location) { + result = [[ASTextKitTextCheckingResult alloc] initWithType:ASTextKitTextCheckingTypeTruncation + entityAttribute:nil + range:truncationTokenRange]; + } else { + NSRange range; + NSDictionary *attributes = [attributedString attributesAtIndex:index effectiveRange:&range]; + ASTextKitEntityAttribute *entityAttribute = attributes[ASTextKitEntityAttributeName]; + if (entityAttribute) { + result = [[ASTextKitTextCheckingResult alloc] initWithType:ASTextKitTextCheckingTypeEntity + entityAttribute:entityAttribute + range:range]; + } + } + if (result != nil) { + *stop = YES; + } + }]; + return result; +} + +@end diff --git a/AsyncDisplayKit/TextKit/ASTextKitRenderer.h b/AsyncDisplayKit/TextKit/ASTextKitRenderer.h new file mode 100755 index 0000000000..969fd9494a --- /dev/null +++ b/AsyncDisplayKit/TextKit/ASTextKitRenderer.h @@ -0,0 +1,84 @@ +/* + * Copyright (c) 2014-present, Facebook, Inc. + * All rights reserved. + * + * This source code is licensed under the BSD-style license found in the + * LICENSE file in the root directory of this source tree. An additional grant + * of patent rights can be found in the PATENTS file in the same directory. + * + */ + +#import + +#import + +#import "ASTextKitAttributes.h" + +@class ASTextKitContext; +@class ASTextKitShadower; +@protocol ASTextKitTruncating; + +/** + ASTextKitRenderer is a modular object that is responsible for laying out and drawing text. + + A renderer will hold onto the TextKit layouts for the given attributes after initialization. This may constitute a + large amount of memory for large enough applications, so care must be taken when keeping many of these around in-memory + at once. + + This object is designed to be modular and simple. All complex maintenance of state should occur in sub-objects or be + derived via pure functions or categories. No touch-related handling belongs in this class. + + ALL sizing and layout information from this class is in the external coordinate space of the TextKit components. This + is an important distinction because all internal sizing and layout operations are carried out within the shadowed + coordinate space. Padding will be added for you in order to ensure clipping does not occur, and additional information + on this transform is available via the shadower should you need it. + */ +@interface ASTextKitRenderer : NSObject + +/** + Designated Initializer +dvlkferufedgjnhjjfhldjedlunvtdtv + @discussion Sizing will occur as a result of initialization, so be careful when/where you use this. + */ +- (instancetype)initWithTextKitAttributes:(const ASTextKitAttributes &)textComponentAttributes + constrainedSize:(const CGSize)constrainedSize; + +@property (nonatomic, strong, readonly) ASTextKitContext *context; + +@property (nonatomic, strong, readonly) id truncater; + +@property (nonatomic, strong, readonly) ASTextKitShadower *shadower; + +@property (nonatomic, assign, readonly) ASTextKitAttributes attributes; + +@property (nonatomic, assign, readonly) CGSize constrainedSize; + +#pragma mark - Drawing +/* + Draw the renderer's text content into the bounds provided. + + @param bounds The rect in which to draw the contents of the renderer. + */ +- (void)drawInContext:(CGContextRef)context bounds:(CGRect)bounds; + +#pragma mark - Layout + +/* + Returns the computed size of the renderer given the constrained size and other parameters in the initializer. + */ +- (CGSize)size; + +#pragma mark - Text Ranges + +/* + The character range from the original attributedString that is displayed by the renderer given the parameters in the + initializer. + */ +- (std::vector)visibleRanges; + +/* + The number of lines shown in the string. + */ +- (NSUInteger)lineCount; + +@end diff --git a/AsyncDisplayKit/TextKit/ASTextKitRenderer.mm b/AsyncDisplayKit/TextKit/ASTextKitRenderer.mm new file mode 100755 index 0000000000..c00d006159 --- /dev/null +++ b/AsyncDisplayKit/TextKit/ASTextKitRenderer.mm @@ -0,0 +1,141 @@ +/* + * Copyright (c) 2014-present, Facebook, Inc. + * All rights reserved. + * + * This source code is licensed under the BSD-style license found in the + * LICENSE file in the root directory of this source tree. An additional grant + * of patent rights can be found in the PATENTS file in the same directory. + * + */ + +#import "ASTextKitRenderer.h" + +#import "ASAssert.h" + +#import "ASTextKitContext.h" +#import "ASTextKitShadower.h" +#import "ASTextKitTailTruncater.h" +#import "ASTextKitTruncating.h" + +static NSCharacterSet *_defaultAvoidTruncationCharacterSet() +{ + static NSCharacterSet *truncationCharacterSet; + static dispatch_once_t onceToken; + dispatch_once(&onceToken, ^{ + NSMutableCharacterSet *mutableCharacterSet = [[NSMutableCharacterSet alloc] init]; + [mutableCharacterSet formUnionWithCharacterSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]]; + [mutableCharacterSet addCharactersInString:@".,!?:;"]; + truncationCharacterSet = mutableCharacterSet; + }); + return truncationCharacterSet; +} + +@implementation ASTextKitRenderer { + CGSize _calculatedSize; +} + +#pragma mark - Initialization + +- (instancetype)initWithTextKitAttributes:(const ASTextKitAttributes &)attributes + constrainedSize:(const CGSize)constrainedSize +{ + if (self = [super init]) { + _constrainedSize = constrainedSize; + _attributes = attributes; + + _shadower = [[ASTextKitShadower alloc] initWithShadowOffset:attributes.shadowOffset + shadowColor:attributes.shadowColor + shadowOpacity:attributes.shadowOpacity + shadowRadius:attributes.shadowRadius]; + + // We must inset the constrained size by the size of the shadower. + CGSize shadowConstrainedSize = [_shadower insetSizeWithConstrainedSize:_constrainedSize]; + + _context = [[ASTextKitContext alloc] initWithAttributedString:attributes.attributedString + lineBreakMode:attributes.lineBreakMode + maximumNumberOfLines:attributes.maximumNumberOfLines + exclusionPaths:attributes.exclusionPaths + constrainedSize:shadowConstrainedSize + layoutManagerFactory:attributes.layoutManagerFactory]; + + _truncater = [[ASTextKitTailTruncater alloc] initWithContext:_context + truncationAttributedString:attributes.truncationAttributedString + avoidTailTruncationSet:attributes.avoidTailTruncationSet ?: _defaultAvoidTruncationCharacterSet() + constrainedSize:shadowConstrainedSize]; + + [self _calculateSize]; + } + return self; +} + +#pragma mark - Sizing + +- (void)_calculateSize +{ + // Force glyph generation and layout, which may not have happened yet (and isn't triggered by + // -usedRectForTextContainer:). + [_context performBlockWithLockedTextKitComponents:^(NSLayoutManager *layoutManager, NSTextStorage *textStorage, NSTextContainer *textContainer) { + [layoutManager ensureLayoutForTextContainer:textContainer]; + }]; + + + CGRect constrainedRect = {CGPointZero, _constrainedSize}; + __block CGRect boundingRect; + [_context performBlockWithLockedTextKitComponents:^(NSLayoutManager *layoutManager, NSTextStorage *textStorage, NSTextContainer *textContainer) { + boundingRect = [layoutManager usedRectForTextContainer:textContainer]; + }]; + + // TextKit often returns incorrect glyph bounding rects in the horizontal direction, so we clip to our bounding rect + // to make sure our width calculations aren't being offset by glyphs going beyond the constrained rect. + boundingRect = CGRectIntersection(boundingRect, {.size = constrainedRect.size}); + + _calculatedSize = [_shadower outsetSizeWithInsetSize:boundingRect.size]; +} + +- (CGSize)size +{ + return _calculatedSize; +} + +#pragma mark - Drawing + +- (void)drawInContext:(CGContextRef)context bounds:(CGRect)bounds; +{ + // We add an assertion so we can track the rare conditions where a graphics context is not present + ASDisplayNodeAssertNotNil(context, @"This is no good without a context."); + + CGRect shadowInsetBounds = [_shadower insetRectWithConstrainedRect:bounds]; + + CGContextSaveGState(context); + [_shadower setShadowInContext:context]; + UIGraphicsPushContext(context); + + [_context performBlockWithLockedTextKitComponents:^(NSLayoutManager *layoutManager, NSTextStorage *textStorage, NSTextContainer *textContainer) { + NSRange glyphRange = [layoutManager glyphRangeForTextContainer:textContainer]; + [layoutManager drawBackgroundForGlyphRange:glyphRange atPoint:shadowInsetBounds.origin]; + [layoutManager drawGlyphsForGlyphRange:glyphRange atPoint:shadowInsetBounds.origin]; + }]; + + UIGraphicsPopContext(); + CGContextRestoreGState(context); +} + +#pragma mark - String Ranges + +- (NSUInteger)lineCount +{ + __block NSUInteger lineCount = 0; + [_context performBlockWithLockedTextKitComponents:^(NSLayoutManager *layoutManager, NSTextStorage *textStorage, NSTextContainer *textContainer) { + for (NSRange lineRange = { 0, 0 }; NSMaxRange(lineRange) < [layoutManager numberOfGlyphs]; lineCount++) { + [layoutManager lineFragmentRectForGlyphAtIndex:NSMaxRange(lineRange) effectiveRange:&lineRange]; + } + }]; + return lineCount; +} + +- (std::vector)visibleRanges +{ + return _truncater.visibleRanges; +} + +@end diff --git a/AsyncDisplayKit/TextKit/ASTextKitShadower.h b/AsyncDisplayKit/TextKit/ASTextKitShadower.h new file mode 100755 index 0000000000..d4d510f3e9 --- /dev/null +++ b/AsyncDisplayKit/TextKit/ASTextKitShadower.h @@ -0,0 +1,70 @@ +/* + * Copyright (c) 2014-present, Facebook, Inc. + * All rights reserved. + * + * This source code is licensed under the BSD-style license found in the + * LICENSE file in the root directory of this source tree. An additional grant + * of patent rights can be found in the PATENTS file in the same directory. + * + */ + +#import + +/** + * @abstract an immutable class for calculating shadow padding drawing a shadowed background for text + */ +@interface ASTextKitShadower : NSObject + +- (instancetype)initWithShadowOffset:(CGSize)shadowOffset + shadowColor:(UIColor *)shadowColor + shadowOpacity:(CGFloat)shadowOpacity + shadowRadius:(CGFloat)shadowRadius; + +/** + * @abstract The offset from the top-left corner at which the shadow starts. + * @discussion A positive width will move the shadow to the right. + * A positive height will move the shadow downwards. + */ +@property (nonatomic, readonly, assign) CGSize shadowOffset; + +//! CGColor in which the shadow is drawn +@property (nonatomic, readonly, strong) UIColor *shadowColor; + +//! Alpha of the shadow +@property (nonatomic, readonly, assign) CGFloat shadowOpacity; + +//! Radius, in pixels +@property (nonatomic, readonly, assign) CGFloat shadowRadius; + +/** + * @abstract The edge insets which represent shadow padding + * @discussion Each edge inset is less than or equal to zero. + * + * Example: + * CGRect boundsWithoutShadowPadding; // Large enough to fit text, not large enough to fit the shadow as well + * UIEdgeInsets shadowPadding = [shadower shadowPadding]; + * CGRect boundsWithShadowPadding = UIEdgeInsetsRect(boundsWithoutShadowPadding, shadowPadding); + */ +- (UIEdgeInsets)shadowPadding; + +- (CGSize)insetSizeWithConstrainedSize:(CGSize)constrainedSize; + +- (CGRect)insetRectWithConstrainedRect:(CGRect)constrainedRect; + +- (CGSize)outsetSizeWithInsetSize:(CGSize)insetSize; + +- (CGRect)outsetRectWithInsetRect:(CGRect)insetRect; + +- (CGRect)offsetRectWithInternalRect:(CGRect)internalRect; + +- (CGPoint)offsetPointWithInternalPoint:(CGPoint)internalPoint; + +- (CGPoint)offsetPointWithExternalPoint:(CGPoint)externalPoint; + +/** + * @abstract draws the shadow for text in the provided CGContext + * @discussion Call within the text node's +drawRect method + */ +- (void)setShadowInContext:(CGContextRef)context; + +@end diff --git a/AsyncDisplayKit/TextKit/ASTextKitShadower.mm b/AsyncDisplayKit/TextKit/ASTextKitShadower.mm new file mode 100755 index 0000000000..19eff36b36 --- /dev/null +++ b/AsyncDisplayKit/TextKit/ASTextKitShadower.mm @@ -0,0 +1,148 @@ +/* + * Copyright (c) 2014-present, Facebook, Inc. + * All rights reserved. + * + * This source code is licensed under the BSD-style license found in the + * LICENSE file in the root directory of this source tree. An additional grant + * of patent rights can be found in the PATENTS file in the same directory. + * + */ + +#import "ASTextKitShadower.h" + +static inline CGSize _insetSize(CGSize size, UIEdgeInsets insets) +{ + return UIEdgeInsetsInsetRect({.size = size}, insets).size; +} + +static inline UIEdgeInsets _invertInsets(UIEdgeInsets insets) +{ + return { + .top = -insets.top, + .left = -insets.left, + .bottom = -insets.bottom, + .right = -insets.right + }; +} + +@implementation ASTextKitShadower { + UIEdgeInsets _calculatedShadowPadding; +} + +- (instancetype)initWithShadowOffset:(CGSize)shadowOffset + shadowColor:(UIColor *)shadowColor + shadowOpacity:(CGFloat)shadowOpacity + shadowRadius:(CGFloat)shadowRadius +{ + if (self = [super init]) { + _shadowOffset = shadowOffset; + _shadowColor = shadowColor; + _shadowOpacity = shadowOpacity; + _shadowRadius = shadowRadius; + _calculatedShadowPadding = UIEdgeInsetsMake(-INFINITY, -INFINITY, INFINITY, INFINITY); + } + return self; +} + +/* + * This method is duplicated here because it gets called frequently, and we were + * wasting valuable time constructing a state object to ask it. + */ +- (BOOL)_shouldDrawShadow +{ + return _shadowOpacity != 0.0 && _shadowColor != nil && (_shadowRadius != 0 || !CGSizeEqualToSize(_shadowOffset, CGSizeZero)); +} + +- (void)setShadowInContext:(CGContextRef)context +{ + if ([self _shouldDrawShadow]) { + CGColorRef textShadowColor = CGColorRetain(_shadowColor.CGColor); + CGSize textShadowOffset = _shadowOffset; + CGFloat textShadowOpacity = _shadowOpacity; + CGFloat textShadowRadius = _shadowRadius; + + if (textShadowOpacity != 1.0) { + CGFloat inherentAlpha = CGColorGetAlpha(textShadowColor); + + CGColorRef oldTextShadowColor = textShadowColor; + textShadowColor = CGColorCreateCopyWithAlpha(textShadowColor, inherentAlpha * textShadowOpacity); + CGColorRelease(oldTextShadowColor); + } + + CGContextSetShadowWithColor(context, textShadowOffset, textShadowRadius, textShadowColor); + + CGColorRelease(textShadowColor); + } +} + + +- (UIEdgeInsets)shadowPadding +{ + if (_calculatedShadowPadding.top == -INFINITY) { + if (![self _shouldDrawShadow]) { + return UIEdgeInsetsZero; + } + + UIEdgeInsets shadowPadding = UIEdgeInsetsZero; + + // min values are expected to be negative for most typical shadowOffset and + // blurRadius settings: + shadowPadding.top = fminf(0.0f, _shadowOffset.height - _shadowRadius); + shadowPadding.left = fminf(0.0f, _shadowOffset.width - _shadowRadius); + + shadowPadding.bottom = fminf(0.0f, -_shadowOffset.height - _shadowRadius); + shadowPadding.right = fminf(0.0f, -_shadowOffset.width - _shadowRadius); + + _calculatedShadowPadding = shadowPadding; + } + + return _calculatedShadowPadding; +} + +- (CGSize)insetSizeWithConstrainedSize:(CGSize)constrainedSize +{ + return _insetSize(constrainedSize, _invertInsets([self shadowPadding])); +} + +- (CGRect)insetRectWithConstrainedRect:(CGRect)constrainedRect +{ + return UIEdgeInsetsInsetRect(constrainedRect, _invertInsets([self shadowPadding])); +} + +- (CGSize)outsetSizeWithInsetSize:(CGSize)insetSize +{ + return _insetSize(insetSize, [self shadowPadding]); +} + +- (CGRect)outsetRectWithInsetRect:(CGRect)insetRect +{ + return UIEdgeInsetsInsetRect(insetRect, [self shadowPadding]); +} + +- (CGRect)offsetRectWithInternalRect:(CGRect)internalRect +{ + return (CGRect){ + .origin = [self offsetPointWithInternalPoint:internalRect.origin], + .size = internalRect.size + }; +} + +- (CGPoint)offsetPointWithInternalPoint:(CGPoint)internalPoint +{ + UIEdgeInsets shadowPadding = [self shadowPadding]; + return (CGPoint){ + internalPoint.x + shadowPadding.left, + internalPoint.y + shadowPadding.top + }; +} + +- (CGPoint)offsetPointWithExternalPoint:(CGPoint)externalPoint +{ + UIEdgeInsets shadowPadding = [self shadowPadding]; + return (CGPoint){ + externalPoint.x - shadowPadding.left, + externalPoint.y - shadowPadding.top + }; +} + +@end diff --git a/AsyncDisplayKit/TextKit/ASTextKitTailTruncater.h b/AsyncDisplayKit/TextKit/ASTextKitTailTruncater.h new file mode 100755 index 0000000000..25b0fda98a --- /dev/null +++ b/AsyncDisplayKit/TextKit/ASTextKitTailTruncater.h @@ -0,0 +1,17 @@ +/* + * Copyright (c) 2014-present, Facebook, Inc. + * All rights reserved. + * + * This source code is licensed under the BSD-style license found in the + * LICENSE file in the root directory of this source tree. An additional grant + * of patent rights can be found in the PATENTS file in the same directory. + * + */ + +#import + +#import "ASTextKitTruncating.h" + +@interface ASTextKitTailTruncater : NSObject + +@end diff --git a/AsyncDisplayKit/TextKit/ASTextKitTailTruncater.mm b/AsyncDisplayKit/TextKit/ASTextKitTailTruncater.mm new file mode 100755 index 0000000000..61764eaa95 --- /dev/null +++ b/AsyncDisplayKit/TextKit/ASTextKitTailTruncater.mm @@ -0,0 +1,191 @@ +/* + * Copyright (c) 2014-present, Facebook, Inc. + * All rights reserved. + * + * This source code is licensed under the BSD-style license found in the + * LICENSE file in the root directory of this source tree. An additional grant + * of patent rights can be found in the PATENTS file in the same directory. + * + */ + +#import "ASAssert.h" + +#import "ASTextKitContext.h" +#import "ASTextKitTailTruncater.h" + +@implementation ASTextKitTailTruncater +{ + __weak ASTextKitContext *_context; + NSAttributedString *_truncationAttributedString; + NSCharacterSet *_avoidTailTruncationSet; + CGSize _constrainedSize; +} +@synthesize visibleRanges = _visibleRanges; +@synthesize truncationStringRect = _truncationStringRect; + +- (instancetype)initWithContext:(ASTextKitContext *)context + truncationAttributedString:(NSAttributedString *)truncationAttributedString + avoidTailTruncationSet:(NSCharacterSet *)avoidTailTruncationSet + constrainedSize:(CGSize)constrainedSize +{ + if (self = [super init]) { + _context = context; + _truncationAttributedString = truncationAttributedString; + _avoidTailTruncationSet = avoidTailTruncationSet; + _constrainedSize = constrainedSize; + + [self _truncate]; + } + return self; +} + +/** + Calculates the intersection of the truncation message within the end of the last line. + */ +- (NSUInteger)_calculateCharacterIndexBeforeTruncationMessage:(NSLayoutManager *)layoutManager + textStorage:(NSTextStorage *)textStorage + textContainer:(NSTextContainer *)textContainer +{ + CGRect constrainedRect = (CGRect){ .size = textContainer.size }; + + NSRange visibleGlyphRange = [layoutManager glyphRangeForBoundingRect:constrainedRect + inTextContainer:textContainer]; + NSInteger lastVisibleGlyphIndex = (NSMaxRange(visibleGlyphRange) - 1); + + if (lastVisibleGlyphIndex < 0) { + return NSNotFound; + } + + CGRect lastLineRect = [layoutManager lineFragmentRectForGlyphAtIndex:lastVisibleGlyphIndex + effectiveRange:NULL]; + CGRect lastLineUsedRect = [layoutManager lineFragmentUsedRectForGlyphAtIndex:lastVisibleGlyphIndex + effectiveRange:NULL]; + NSParagraphStyle *paragraphStyle = [textStorage attributesAtIndex:[layoutManager characterIndexForGlyphAtIndex:lastVisibleGlyphIndex] + effectiveRange:NULL][NSParagraphStyleAttributeName]; + // We assume LTR so long as the writing direction is not + BOOL rtlWritingDirection = paragraphStyle ? paragraphStyle.baseWritingDirection == NSWritingDirectionRightToLeft : NO; + // We only want to treat the trunction rect as left-aligned in the case that we are right-aligned and our writing + // direction is RTL. + BOOL leftAligned = CGRectGetMinX(lastLineRect) == CGRectGetMinX(lastLineUsedRect) || !rtlWritingDirection; + + // Calculate the bounding rectangle for the truncation message + ASTextKitContext *truncationContext = [[ASTextKitContext alloc] initWithAttributedString:_truncationAttributedString + lineBreakMode:NSLineBreakByWordWrapping + maximumNumberOfLines:1 + exclusionPaths:nil + constrainedSize:constrainedRect.size + layoutManagerFactory:nil]; + + __block CGRect truncationUsedRect; + + [truncationContext performBlockWithLockedTextKitComponents:^(NSLayoutManager *truncationLayoutManager, NSTextStorage *truncationTextStorage, NSTextContainer *truncationTextContainer) { + // Size the truncation message + [truncationLayoutManager ensureLayoutForTextContainer:truncationTextContainer]; + NSRange truncationGlyphRange = [truncationLayoutManager glyphRangeForTextContainer:truncationTextContainer]; + truncationUsedRect = [truncationLayoutManager boundingRectForGlyphRange:truncationGlyphRange + inTextContainer:truncationTextContainer]; + }]; + CGFloat truncationOriginX = (leftAligned ? + CGRectGetMaxX(constrainedRect) - truncationUsedRect.size.width : + CGRectGetMinX(constrainedRect)); + CGRect translatedTruncationRect = CGRectMake(truncationOriginX, + CGRectGetMinY(lastLineRect), + truncationUsedRect.size.width, + truncationUsedRect.size.height); + + // Determine which glyph is the first to be clipped / overlaps the truncation message. + CGFloat truncationMessageX = (leftAligned ? + CGRectGetMinX(translatedTruncationRect) : + CGRectGetMaxX(translatedTruncationRect)); + CGPoint beginningOfTruncationMessage = CGPointMake(truncationMessageX, + CGRectGetMidY(translatedTruncationRect)); + NSUInteger firstClippedGlyphIndex = [layoutManager glyphIndexForPoint:beginningOfTruncationMessage + inTextContainer:textContainer + fractionOfDistanceThroughGlyph:NULL]; + // If it didn't intersect with any text then it should just return the last visible character index, since the + // truncation rect can fully fit on the line without clipping any other text. + if (firstClippedGlyphIndex == NSNotFound) { + return [layoutManager characterIndexForGlyphAtIndex:lastVisibleGlyphIndex]; + } + NSUInteger firstCharacterIndexToReplace = [layoutManager characterIndexForGlyphAtIndex:firstClippedGlyphIndex]; + + // Break on word boundaries + return [self _findTruncationInsertionPointAtOrBeforeCharacterIndex:firstCharacterIndexToReplace + layoutManager:layoutManager + textStorage:textStorage]; +} + +/** + Finds the first whitespace at or before the character index do we don't truncate in the middle of words + If there are multiple whitespaces together (say a space and a newline), this will backtrack to the first one + */ +- (NSUInteger)_findTruncationInsertionPointAtOrBeforeCharacterIndex:(NSUInteger)firstCharacterIndexToReplace + layoutManager:(NSLayoutManager *)layoutManager + textStorage:(NSTextStorage *)textStorage +{ + // Don't attempt to truncate beyond the end of the string + if (firstCharacterIndexToReplace >= textStorage.length) { + return 0; + } + + // Find the glyph range of the line fragment containing the first character to replace. + NSRange lineGlyphRange; + [layoutManager lineFragmentRectForGlyphAtIndex:[layoutManager glyphIndexForCharacterAtIndex:firstCharacterIndexToReplace] + effectiveRange:&lineGlyphRange]; + + // Look for the first whitespace from the end of the line, starting from the truncation point + NSUInteger startingSearchIndex = [layoutManager characterIndexForGlyphAtIndex:lineGlyphRange.location]; + NSUInteger endingSearchIndex = firstCharacterIndexToReplace; + NSRange rangeToSearch = NSMakeRange(startingSearchIndex, (endingSearchIndex - startingSearchIndex)); + + NSRange rangeOfLastVisibleAvoidedChars = { .location = NSNotFound }; + if (_avoidTailTruncationSet) { + rangeOfLastVisibleAvoidedChars = [textStorage.string rangeOfCharacterFromSet:_avoidTailTruncationSet + options:NSBackwardsSearch + range:rangeToSearch]; + } + + // Couldn't find a good place to truncate. Might be because there is no whitespace in the text, or we're dealing + // with a foreign language encoding. Settle for truncating at the original place, which may be mid-word. + if (rangeOfLastVisibleAvoidedChars.location == NSNotFound) { + return firstCharacterIndexToReplace; + } else { + return rangeOfLastVisibleAvoidedChars.location; + } +} + +- (void)_truncate +{ + [_context performBlockWithLockedTextKitComponents:^(NSLayoutManager *layoutManager, NSTextStorage *textStorage, NSTextContainer *textContainer) { + NSUInteger originalStringLength = textStorage.length; + + [layoutManager ensureLayoutForTextContainer:textContainer]; + + NSRange visibleGlyphRange = [layoutManager glyphRangeForBoundingRect:{ .size = textContainer.size } + inTextContainer:textContainer]; + NSRange visibleCharacterRange = [layoutManager characterRangeForGlyphRange:visibleGlyphRange + actualGlyphRange:NULL]; + + // Check if text is truncated, and if so apply our truncation string + if (visibleCharacterRange.length < originalStringLength && _truncationAttributedString.length > 0) { + NSInteger firstCharacterIndexToReplace = [self _calculateCharacterIndexBeforeTruncationMessage:layoutManager + textStorage:textStorage + textContainer:textContainer]; + if (firstCharacterIndexToReplace == 0 || firstCharacterIndexToReplace == NSNotFound) { + return; + } + + // Update/truncate the visible range of text + visibleCharacterRange = NSMakeRange(0, firstCharacterIndexToReplace); + NSRange truncationReplacementRange = NSMakeRange(firstCharacterIndexToReplace, + textStorage.length - firstCharacterIndexToReplace); + // Replace the end of the visible message with the truncation string + [textStorage replaceCharactersInRange:truncationReplacementRange + withAttributedString:_truncationAttributedString]; + } + + _visibleRanges = { visibleCharacterRange }; + }]; +} + +@end diff --git a/AsyncDisplayKit/TextKit/ASTextKitTruncating.h b/AsyncDisplayKit/TextKit/ASTextKitTruncating.h new file mode 100755 index 0000000000..f3f276ba00 --- /dev/null +++ b/AsyncDisplayKit/TextKit/ASTextKitTruncating.h @@ -0,0 +1,37 @@ +/* + * Copyright (c) 2014-present, Facebook, Inc. + * All rights reserved. + * + * This source code is licensed under the BSD-style license found in the + * LICENSE file in the root directory of this source tree. An additional grant + * of patent rights can be found in the PATENTS file in the same directory. + * + */ + +#import + +#import + +#import "ASTextKitRenderer.h" + +@protocol ASTextKitTruncating + +@property (nonatomic, assign, readonly) std::vector visibleRanges; +@property (nonatomic, assign, readonly) CGRect truncationStringRect; + +/** + A truncater object is initialized with the full state of the text. It is a Single Responsibility Object that is + mutative. It configures the state of the TextKit components (layout manager, text container, text storage) to achieve + the intended truncation, then it stores the resulting state for later fetching. + + The truncater may mutate the state of the text storage such that only the drawn string is actually present in the + text storage itself. + + The truncater should not store a strong reference to the context to prevent retain cycles. + */ +- (instancetype)initWithContext:(ASTextKitContext *)context + truncationAttributedString:(NSAttributedString *)truncationAttributedString + avoidTailTruncationSet:(NSCharacterSet *)avoidTailTruncationSet + constrainedSize:(CGSize)constrainedSize; + +@end diff --git a/AsyncDisplayKit/Details/ASTextNodeTypes.h b/AsyncDisplayKit/TextKit/ASTextNodeTypes.h similarity index 100% rename from AsyncDisplayKit/Details/ASTextNodeTypes.h rename to AsyncDisplayKit/TextKit/ASTextNodeTypes.h diff --git a/AsyncDisplayKit/Details/ASTextNodeWordKerner.h b/AsyncDisplayKit/TextKit/ASTextNodeWordKerner.h similarity index 100% rename from AsyncDisplayKit/Details/ASTextNodeWordKerner.h rename to AsyncDisplayKit/TextKit/ASTextNodeWordKerner.h diff --git a/AsyncDisplayKit/Details/ASTextNodeWordKerner.m b/AsyncDisplayKit/TextKit/ASTextNodeWordKerner.m similarity index 100% rename from AsyncDisplayKit/Details/ASTextNodeWordKerner.m rename to AsyncDisplayKit/TextKit/ASTextNodeWordKerner.m diff --git a/AsyncDisplayKitTests/ASTextNodeCoreTextAdditionsTests.m b/AsyncDisplayKitTests/ASTextKitCoreTextAdditionsTests.m similarity index 93% rename from AsyncDisplayKitTests/ASTextNodeCoreTextAdditionsTests.m rename to AsyncDisplayKitTests/ASTextKitCoreTextAdditionsTests.m index 014a9b875f..a33c9e2313 100644 --- a/AsyncDisplayKitTests/ASTextNodeCoreTextAdditionsTests.m +++ b/AsyncDisplayKitTests/ASTextKitCoreTextAdditionsTests.m @@ -10,13 +10,13 @@ #import -#import "ASTextNodeCoreTextAdditions.h" +#import "ASTextKitCoreTextAdditions.h" -@interface ASTextNodeCoreTextAdditionsTests : XCTestCase +@interface ASTextKitCoreTextAdditionsTests : XCTestCase @end -@implementation ASTextNodeCoreTextAdditionsTests +@implementation ASTextKitCoreTextAdditionsTests - (void)testAttributeCleansing { diff --git a/AsyncDisplayKitTests/ASTextKitTests.mm b/AsyncDisplayKitTests/ASTextKitTests.mm new file mode 100644 index 0000000000..90ef7443a1 --- /dev/null +++ b/AsyncDisplayKitTests/ASTextKitTests.mm @@ -0,0 +1,136 @@ +/* Copyright (c) 2014-present, Facebook, Inc. + * All rights reserved. + * + * This source code is licensed under the BSD-style license found in the + * LICENSE file in the root directory of this source tree. An additional grant + * of patent rights can be found in the PATENTS file in the same directory. + */ + +#import +#import + +#import + +#import "ASTextKitAttributes.h" +#import "ASTextKitRenderer.h" + +@interface ASTextKitTests : XCTestCase + +@end + +static UITextView *UITextViewWithAttributes(const ASTextKitAttributes &attributes, const CGSize constrainedSize) +{ + UITextView *textView = [[UITextView alloc] initWithFrame:{ .size = constrainedSize }]; + textView.backgroundColor = [UIColor clearColor]; + textView.textContainer.lineBreakMode = attributes.lineBreakMode; + textView.textContainer.lineFragmentPadding = 0.f; + textView.textContainer.maximumNumberOfLines = attributes.maximumNumberOfLines; + textView.textContainerInset = UIEdgeInsetsZero; + textView.layoutManager.usesFontLeading = NO; + textView.attributedText = attributes.attributedString; + return textView; +} + +static UIImage *UITextViewImageWithAttributes(const ASTextKitAttributes &attributes, const CGSize constrainedSize) +{ + UITextView *textView = UITextViewWithAttributes(attributes, constrainedSize); + UIGraphicsBeginImageContextWithOptions(constrainedSize, NO, 0); + CGContextRef context = UIGraphicsGetCurrentContext(); + + CGContextSaveGState(context); + { + [textView.layer renderInContext:context]; + } + CGContextRestoreGState(context); + + UIImage *snapshot = UIGraphicsGetImageFromCurrentImageContext(); + UIGraphicsEndImageContext(); + + return snapshot; +} + +static UIImage *ASTextKitImageWithAttributes(const ASTextKitAttributes &attributes, const CGSize constrainedSize) +{ + ASTextKitRenderer *renderer = [[ASTextKitRenderer alloc] initWithTextKitAttributes:attributes + constrainedSize:constrainedSize]; + UIGraphicsBeginImageContextWithOptions(constrainedSize, NO, 0); + CGContextRef context = UIGraphicsGetCurrentContext(); + + CGContextSaveGState(context); + { + [renderer drawInContext:context bounds:{.size = constrainedSize}]; + } + CGContextRestoreGState(context); + + UIImage *snapshot = UIGraphicsGetImageFromCurrentImageContext(); + UIGraphicsEndImageContext(); + + return snapshot; +} + +static BOOL checkAttributes(const ASTextKitAttributes &attributes, const CGSize constrainedSize) +{ + FBSnapshotTestController *controller = [[FBSnapshotTestController alloc] init]; + UIImage *labelImage = UITextViewImageWithAttributes(attributes, constrainedSize); + UIImage *textKitImage = ASTextKitImageWithAttributes(attributes, constrainedSize); + return [controller compareReferenceImage:labelImage toImage:textKitImage error:nil]; +} + +@implementation ASTextKitTests + +- (void)testSimpleStrings +{ + ASTextKitAttributes attributes { + .attributedString = [[NSAttributedString alloc] initWithString:@"hello" attributes:@{NSFontAttributeName : [UIFont systemFontOfSize:12]}] + }; + XCTAssert(checkAttributes(attributes, { 100, 100 })); +} + +- (void)testChangingAPropertyChangesHash +{ + NSAttributedString *as = [[NSAttributedString alloc] initWithString:@"hello" attributes:@{NSFontAttributeName : [UIFont systemFontOfSize:12]}]; + + ASTextKitAttributes attrib1 { + .attributedString = as, + .lineBreakMode = NSLineBreakByClipping, + }; + ASTextKitAttributes attrib2 { + .attributedString = as, + }; + + XCTAssertNotEqual(attrib1.hash(), attrib2.hash(), @"Hashes should differ when NSLineBreakByClipping changes."); +} + +- (void)testSameStringHashesSame +{ + ASTextKitAttributes attrib1 { + .attributedString = [[NSAttributedString alloc] initWithString:@"hello" attributes:@{NSFontAttributeName : [UIFont systemFontOfSize:12]}], + }; + ASTextKitAttributes attrib2 { + .attributedString = [[NSAttributedString alloc] initWithString:@"hello" attributes:@{NSFontAttributeName : [UIFont systemFontOfSize:12]}], + }; + + XCTAssertEqual(attrib1.hash(), attrib2.hash(), @"Hashes should be the same!"); +} + + +- (void)testStringsWithVariableAttributes +{ + NSMutableAttributedString *attrStr = [[NSMutableAttributedString alloc] initWithString:@"hello" attributes:@{NSFontAttributeName : [UIFont systemFontOfSize:12]}]; + for (int i = 0; i < attrStr.length; i++) { + // Color each character something different + CGFloat factor = ((CGFloat)i) / ((CGFloat)attrStr.length); + [attrStr addAttribute:NSForegroundColorAttributeName + value:[UIColor colorWithRed:factor + green:1.0 - factor + blue:0.0 + alpha:1.0] + range:NSMakeRange(i, 1)]; + } + ASTextKitAttributes attributes { + .attributedString = attrStr + }; + XCTAssert(checkAttributes(attributes, { 100, 100 })); +} + +@end diff --git a/AsyncDisplayKitTests/ASTextKitTruncationTests.mm b/AsyncDisplayKitTests/ASTextKitTruncationTests.mm new file mode 100644 index 0000000000..123ef417d3 --- /dev/null +++ b/AsyncDisplayKitTests/ASTextKitTruncationTests.mm @@ -0,0 +1,146 @@ +/* Copyright (c) 2014-present, Facebook, Inc. + * All rights reserved. + * + * This source code is licensed under the BSD-style license found in the + * LICENSE file in the root directory of this source tree. An additional grant + * of patent rights can be found in the PATENTS file in the same directory. + */ + +#import +#import + +#import "ASTextKitContext.h" +#import "ASTextKitTailTruncater.h" + +@interface ASTextKitTruncationTests : XCTestCase + +@end + +@implementation ASTextKitTruncationTests + +- (NSString *)_sentenceString +{ + return @"90's cray photo booth tote bag bespoke Carles. Plaid wayfarers Odd Future master cleanse tattooed four dollar toast small batch kale chips leggings meh photo booth occupy irony."; +} + +- (NSAttributedString *)_sentenceAttributedString +{ + return [[NSAttributedString alloc] initWithString:[self _sentenceString] attributes:@{}]; +} + +- (NSAttributedString *)_simpleTruncationAttributedString +{ + return [[NSAttributedString alloc] initWithString:@"..." attributes:@{}]; +} + +- (void)testEmptyTruncationStringSameAsStraightTextKitTailTruncation +{ + CGSize constrainedSize = CGSizeMake(100, 50); + NSAttributedString *attributedString = [self _sentenceAttributedString]; + ASTextKitContext *context = [[ASTextKitContext alloc] initWithAttributedString:attributedString + lineBreakMode:NSLineBreakByWordWrapping + maximumNumberOfLines:0 + exclusionPaths:nil + constrainedSize:constrainedSize + layoutManagerFactory:nil]; + __block NSRange textKitVisibleRange; + [context performBlockWithLockedTextKitComponents:^(NSLayoutManager *layoutManager, NSTextStorage *textStorage, NSTextContainer *textContainer) { + textKitVisibleRange = [layoutManager characterRangeForGlyphRange:[layoutManager glyphRangeForTextContainer:textContainer] + actualGlyphRange:NULL]; + }]; + ASTextKitTailTruncater *tailTruncater = [[ASTextKitTailTruncater alloc] initWithContext:context + truncationAttributedString:nil + avoidTailTruncationSet:nil + constrainedSize:constrainedSize]; + XCTAssert(NSEqualRanges(textKitVisibleRange, tailTruncater.visibleRanges[0])); +} + +- (void)testSimpleTailTruncation +{ + CGSize constrainedSize = CGSizeMake(100, 60); + NSAttributedString *attributedString = [self _sentenceAttributedString]; + ASTextKitContext *context = [[ASTextKitContext alloc] initWithAttributedString:attributedString + lineBreakMode:NSLineBreakByWordWrapping + maximumNumberOfLines:0 + exclusionPaths:nil + constrainedSize:constrainedSize + layoutManagerFactory:nil]; + ASTextKitTailTruncater *tailTruncater = [[ASTextKitTailTruncater alloc] initWithContext:context + truncationAttributedString:[self _simpleTruncationAttributedString] + avoidTailTruncationSet:[NSCharacterSet characterSetWithCharactersInString:@""] + constrainedSize:constrainedSize]; + __block NSString *drawnString; + [context performBlockWithLockedTextKitComponents:^(NSLayoutManager *layoutManager, NSTextStorage *textStorage, NSTextContainer *textContainer) { + drawnString = textStorage.string; + }]; + NSString *expectedString = @"90's cray photo booth tote bag bespoke Carles. Plaid wayfarers..."; + XCTAssertEqualObjects(expectedString, drawnString); + XCTAssert(NSEqualRanges(NSMakeRange(0, 62), tailTruncater.visibleRanges[0])); +} + +- (void)testAvoidedCharTailWordBoundaryTruncation +{ + CGSize constrainedSize = CGSizeMake(100, 50); + NSAttributedString *attributedString = [self _sentenceAttributedString]; + ASTextKitContext *context = [[ASTextKitContext alloc] initWithAttributedString:attributedString + lineBreakMode:NSLineBreakByWordWrapping + maximumNumberOfLines:0 + exclusionPaths:nil + constrainedSize:constrainedSize + layoutManagerFactory:nil]; + ASTextKitTailTruncater *tailTruncater = [[ASTextKitTailTruncater alloc] initWithContext:context + truncationAttributedString:[self _simpleTruncationAttributedString] + avoidTailTruncationSet:[NSCharacterSet characterSetWithCharactersInString:@"."] + constrainedSize:constrainedSize]; + (void)tailTruncater; + __block NSString *drawnString; + [context performBlockWithLockedTextKitComponents:^(NSLayoutManager *layoutManager, NSTextStorage *textStorage, NSTextContainer *textContainer) { + drawnString = textStorage.string; + }]; + // This should have removed the additional "." in the string right after Carles. + NSString *expectedString = @"90's cray photo booth tote bag bespoke Carles..."; + XCTAssertEqualObjects(expectedString, drawnString); +} + +- (void)testAvoidedCharTailCharBoundaryTruncation +{ + CGSize constrainedSize = CGSizeMake(50, 50); + NSAttributedString *attributedString = [self _sentenceAttributedString]; + ASTextKitContext *context = [[ASTextKitContext alloc] initWithAttributedString:attributedString + lineBreakMode:NSLineBreakByCharWrapping + maximumNumberOfLines:0 + exclusionPaths:nil + constrainedSize:constrainedSize + layoutManagerFactory:nil]; + ASTextKitTailTruncater *tailTruncater = [[ASTextKitTailTruncater alloc] initWithContext:context + truncationAttributedString:[self _simpleTruncationAttributedString] + avoidTailTruncationSet:[NSCharacterSet characterSetWithCharactersInString:@"."] + constrainedSize:constrainedSize]; + // So Xcode doesn't yell at me for an unused var... + (void)tailTruncater; + __block NSString *drawnString; + [context performBlockWithLockedTextKitComponents:^(NSLayoutManager *layoutManager, NSTextStorage *textStorage, NSTextContainer *textContainer) { + drawnString = textStorage.string; + }]; + // This should have removed the additional "." in the string right after Carles. + NSString *expectedString = @"90's cray photo booth t..."; + XCTAssertEqualObjects(expectedString, drawnString); +} + +- (void)testHandleZeroHeightConstrainedSize +{ + CGSize constrainedSize = CGSizeMake(50, 0); + NSAttributedString *attributedString = [self _sentenceAttributedString]; + ASTextKitContext *context = [[ASTextKitContext alloc] initWithAttributedString:attributedString + lineBreakMode:NSLineBreakByCharWrapping + maximumNumberOfLines:0 + exclusionPaths:nil + constrainedSize:constrainedSize + layoutManagerFactory:nil]; + XCTAssertNoThrow([[ASTextKitTailTruncater alloc] initWithContext:context + truncationAttributedString:[self _simpleTruncationAttributedString] + avoidTailTruncationSet:[NSCharacterSet characterSetWithCharactersInString:@"."] + constrainedSize:constrainedSize]); +} + +@end diff --git a/AsyncDisplayKitTests/ASTextNodeRendererTests.m b/AsyncDisplayKitTests/ASTextNodeRendererTests.m deleted file mode 100644 index bcfb7c12ce..0000000000 --- a/AsyncDisplayKitTests/ASTextNodeRendererTests.m +++ /dev/null @@ -1,178 +0,0 @@ -/* Copyright (c) 2014-present, Facebook, Inc. - * All rights reserved. - * - * This source code is licensed under the BSD-style license found in the - * LICENSE file in the root directory of this source tree. An additional grant - * of patent rights can be found in the PATENTS file in the same directory. - */ - -#import - -#import - -#import "ASTextNodeRenderer.h" - -@interface ASTextNodeRendererTests : XCTestCase - -@property (nonatomic, readwrite, strong) ASTextNodeRenderer *renderer; -@property (nonatomic, copy, readwrite) NSAttributedString *attributedString; -@property (nonatomic, copy, readwrite) NSAttributedString *truncationString; -@property (nonatomic, readwrite, assign) NSLineBreakMode truncationMode; -@property (nonatomic, readwrite, assign) NSUInteger maximumLineCount; -@property (nonatomic, readwrite, assign) CGFloat lineSpacing; - -@property (nonatomic, readwrite, assign) CGSize constrainedSize; -@property (nonatomic, readwrite) NSArray *exclusionPaths; - -@end - -@implementation ASTextNodeRendererTests - -- (void)setUp -{ - [super setUp]; - - _truncationMode = NSLineBreakByWordWrapping; - - NSMutableParagraphStyle *paragraphStyle = [[NSMutableParagraphStyle alloc] init]; - _lineSpacing = 14.0; - paragraphStyle.lineSpacing = _lineSpacing; - paragraphStyle.maximumLineHeight = _lineSpacing; - paragraphStyle.minimumLineHeight = _lineSpacing; - NSDictionary *attributes = @{ NSFontAttributeName : [UIFont systemFontOfSize:12.0], - NSParagraphStyleAttributeName : paragraphStyle }; - _attributedString = [[NSAttributedString alloc] initWithString:@"Lorem ipsum" attributes:attributes]; - _truncationString = [[NSAttributedString alloc] initWithString:@"More"]; - - _exclusionPaths = nil; - - _constrainedSize = CGSizeMake(FLT_MAX, FLT_MAX); -} - -- (void)setUpRenderer -{ - _renderer = [[ASTextNodeRenderer alloc] initWithAttributedString:_attributedString - truncationString:_truncationString - truncationMode:_truncationMode - maximumLineCount:_maximumLineCount - exclusionPaths:_exclusionPaths - constrainedSize:_constrainedSize]; - -} - -- (void)testCalculateSize -{ - [self setUpRenderer]; - - CGSize size = [_renderer size]; - XCTAssertTrue(size.width > 0, @"Should have a nonzero width"); - XCTAssertTrue(size.height > 0, @"Should have a nonzero height"); -} - -- (void)testCalculateSizeWithEmptyString -{ - _attributedString = [[NSAttributedString alloc] initWithString:@""]; - [self setUpRenderer]; - CGSize size = [_renderer size]; - XCTAssertTrue(CGSizeEqualToSize(CGSizeZero, size), @"Empty NSAttributedString should result in CGSizeZero"); -} - -- (void)testCalculateSizeWithNilString -{ - _attributedString = nil; - [self setUpRenderer]; - CGSize size = [_renderer size]; - XCTAssertTrue(CGSizeEqualToSize(CGSizeZero, size), @"Nil NSAttributedString should result in CGSizeZero"); -} - -- (void)testNumberOfLines -{ - [self setUpRenderer]; - CGSize size = [_renderer size]; - NSInteger numberOfLines = size.height / _lineSpacing; - XCTAssertTrue(numberOfLines == 1 , @"If constrained height (%f) is float max, then there should only be one line of text. Size %@", _constrainedSize.width, NSStringFromCGSize(size)); -} - -- (void)testMaximumLineCount -{ - NSArray *lines = [NSArray arrayWithObjects:@"Hello!", @"world!", @"foo", @"bar", @"baz", nil]; - _maximumLineCount = 2; - for (int i = 0; i <= [lines count]; i++) { - NSString *line = [[lines subarrayWithRange:NSMakeRange(0, i)] componentsJoinedByString:@"\n"]; - _attributedString = [[NSAttributedString alloc] initWithString:line]; - [self setUpRenderer]; - [_renderer size]; - XCTAssertTrue(_renderer.lineCount <= _maximumLineCount, @"The line count %tu after rendering should be no larger than the maximum line count %tu", _renderer.lineCount, _maximumLineCount); - } -} - -- (void)testNoTruncationIfEnoughSpace -{ - [self setUpRenderer]; - [_renderer size]; - NSRange stringRange = NSMakeRange(0, _attributedString.length); - NSRange visibleRange = [_renderer visibleRange]; - XCTAssertTrue(NSEqualRanges(stringRange, visibleRange), @"There should be no truncation if the text has plenty of space to lay out"); - XCTAssertTrue(NSEqualRanges([_renderer truncationStringCharacterRange], NSMakeRange(NSNotFound, _truncationString.length)), @"There should be no range for the truncation string if no truncation is occurring"); -} - -- (void)testTruncation -{ - [self setUpRenderer]; - CGSize calculatedSize = [_renderer size]; - - // Make the constrained size just a *little* too small - _constrainedSize = CGSizeMake(calculatedSize.width - 2, calculatedSize.height); - _renderer = nil; - [self setUpRenderer]; - [_renderer size]; - NSRange stringRange = NSMakeRange(0, _attributedString.length); - NSRange visibleRange = [_renderer visibleRange]; - XCTAssertTrue(visibleRange.length < stringRange.length, @"Some truncation should occur if the constrained size is smaller than the previously calculated bounding size. String length %tu, visible range %@", _attributedString.length, NSStringFromRange(visibleRange)); - NSRange truncationRange = [_renderer truncationStringCharacterRange]; - XCTAssertTrue(truncationRange.location == NSMaxRange(visibleRange), @"Truncation location (%zd) should be after the end of the visible range (%zd)", truncationRange.location, NSMaxRange(visibleRange)); - XCTAssertTrue(truncationRange.length == _truncationString.length, @"Truncation string length (%zd) should be the full length of the supplied truncation string (%@)", truncationRange.length, _truncationString.string); -} - -/** - * We don't want to decrease the total number of lines, i.e. truncate too aggressively, - * But we also don't want to add extra lines just to display our truncation message - */ -- (void)testTruncationConservesOriginalHeight -{ - [self setUpRenderer]; - CGSize calculatedSize = [_renderer size]; - - // Make the constrained size just a *little* too small - _constrainedSize = CGSizeMake(calculatedSize.width - 1, calculatedSize.height); - [self setUpRenderer]; - CGSize calculatedSizeWithTruncation = [_renderer size]; - // Floating point equality - XCTAssertTrue(fabs(calculatedSizeWithTruncation.height - calculatedSize.height) < .001, @"The height after truncation (%f) doesn't match the normal calculated height (%f)", calculatedSizeWithTruncation.height, calculatedSize.height); -} - -- (void)testNoCrashOnTappingEmptyTextNode -{ - _attributedString = [[NSAttributedString alloc] initWithString:@""]; - [self setUpRenderer]; - [_renderer size]; - [_renderer enumerateTextIndexesAtPosition:CGPointZero usingBlock:^(NSUInteger characterIndex, CGRect glyphBoundingRect, BOOL *stop) { - XCTFail(@"Shouldn't be any text indexes to enumerate"); - }]; -} - -- (void)testExclusionPaths -{ - _constrainedSize = CGSizeMake(200, CGFLOAT_MAX); - [self setUpRenderer]; - CGSize sizeWithoutExclusionPath = [_renderer size]; - - CGRect exclusionRect = CGRectMake(20, 0, 180, _lineSpacing * 2.0); - _exclusionPaths = @[[UIBezierPath bezierPathWithRect:exclusionRect]]; - [self setUpRenderer]; - CGSize sizeWithExclusionPath = [_renderer size]; - - XCTAssertEqualWithAccuracy(sizeWithoutExclusionPath.height + exclusionRect.size.height, sizeWithExclusionPath.height, 0.5, @"Using an exclusion path so the the text can not fit into the first two lines should increment the size of the text by the heigth of the exclusion path"); -} - -@end diff --git a/AsyncDisplayKitTests/ASTextNodeShadowerTests.m b/AsyncDisplayKitTests/ASTextNodeShadowerTests.m deleted file mode 100644 index f260d27768..0000000000 --- a/AsyncDisplayKitTests/ASTextNodeShadowerTests.m +++ /dev/null @@ -1,156 +0,0 @@ -/* Copyright (c) 2014-present, Facebook, Inc. - * All rights reserved. - * - * This source code is licensed under the BSD-style license found in the - * LICENSE file in the root directory of this source tree. An additional grant - * of patent rights can be found in the PATENTS file in the same directory. - */ - -#import - -#import "ASTextNodeShadower.h" - -@interface ASTextNodeShadowerTests : XCTestCase - -@property (nonatomic, readwrite, strong) ASTextNodeShadower *shadower; - -@end - -@implementation ASTextNodeShadowerTests - -- (void)testInstantiation -{ - CGSize shadowOffset = CGSizeMake(3, 5); - CGColorRef shadowColor = CGColorRetain([UIColor blackColor].CGColor); - CGFloat shadowOpacity = 0.3; - CGFloat shadowRadius = 4.2; - _shadower = [[ASTextNodeShadower alloc] initWithShadowOffset:shadowOffset - shadowColor:shadowColor - shadowOpacity:shadowOpacity - shadowRadius:shadowRadius]; - XCTAssertNotNil(_shadower, @"Couldn't instantiate shadow drawer"); - XCTAssertTrue(CGSizeEqualToSize(_shadower.shadowOffset, shadowOffset), @"Failed to set shadowOffset (%@) to %@", NSStringFromCGSize(_shadower.shadowOffset), NSStringFromCGSize(shadowOffset)); - XCTAssertTrue(_shadower.shadowColor == shadowColor, @"Failed to set shadowColor (%@) to %@", _shadower.shadowColor, shadowColor); - XCTAssertTrue(_shadower.shadowOpacity == shadowOpacity, @"Failed to set shadowOpacity (%f) to %f", _shadower.shadowOpacity, shadowOpacity); - XCTAssertTrue(_shadower.shadowRadius == shadowRadius, @"Failed to set shadowRadius (%f) to %f", _shadower.shadowRadius, shadowRadius); - CGColorRelease(shadowColor); -} - -- (void)testNoShadowIfNoRadiusAndNoOffset -{ - CGSize shadowOffset = CGSizeZero; - CGColorRef shadowColor = CGColorRetain([UIColor blackColor].CGColor); - CGFloat shadowOpacity = 0.3; - CGFloat shadowRadius = 0; - _shadower = [[ASTextNodeShadower alloc] initWithShadowOffset:shadowOffset - shadowColor:shadowColor - shadowOpacity:shadowOpacity - shadowRadius:shadowRadius]; - UIEdgeInsets shadowPadding = [_shadower shadowPadding]; - XCTAssertTrue(UIEdgeInsetsEqualToEdgeInsets(shadowPadding, UIEdgeInsetsZero), @"There should be no shadow padding if shadow radius is zero"); - CGColorRelease(shadowColor); -} - -- (void)testShadowIfOffsetButNoRadius -{ - CGSize shadowOffset = CGSizeMake(3, 5); - CGColorRef shadowColor = CGColorRetain([UIColor blackColor].CGColor); - CGFloat shadowOpacity = 0.3; - CGFloat shadowRadius = 0; - _shadower = [[ASTextNodeShadower alloc] initWithShadowOffset:shadowOffset - shadowColor:shadowColor - shadowOpacity:shadowOpacity - shadowRadius:shadowRadius]; - UIEdgeInsets shadowPadding = [_shadower shadowPadding]; - UIEdgeInsets expectedInsets = UIEdgeInsetsMake(0, 0, -5, -3); - XCTAssertTrue(UIEdgeInsetsEqualToEdgeInsets(shadowPadding, expectedInsets), @"Expected insets %@, encountered insets %@", NSStringFromUIEdgeInsets(expectedInsets), NSStringFromUIEdgeInsets(shadowPadding)); - CGColorRelease(shadowColor); -} - -- (void)testNoShadowIfNoOpacity -{ - CGSize shadowOffset = CGSizeMake(3, 5); - CGColorRef shadowColor = CGColorRetain([UIColor blackColor].CGColor); - CGFloat shadowOpacity = 0; - CGFloat shadowRadius = 4; - _shadower = [[ASTextNodeShadower alloc] initWithShadowOffset:shadowOffset - shadowColor:shadowColor - shadowOpacity:shadowOpacity - shadowRadius:shadowRadius]; - UIEdgeInsets shadowPadding = [_shadower shadowPadding]; - XCTAssertTrue(UIEdgeInsetsEqualToEdgeInsets(shadowPadding, UIEdgeInsetsZero), @"There should be no shadow padding if shadow opacity is zero"); - CGColorRelease(shadowColor); -} - -- (void)testShadowPaddingForRadiusOf4 -{ - CGSize shadowOffset = CGSizeZero; - CGColorRef shadowColor = CGColorRetain([UIColor blackColor].CGColor); - CGFloat shadowOpacity = 1; - CGFloat shadowRadius = 4; - _shadower = [[ASTextNodeShadower alloc] initWithShadowOffset:shadowOffset - shadowColor:shadowColor - shadowOpacity:shadowOpacity - shadowRadius:shadowRadius]; - UIEdgeInsets shadowPadding = [_shadower shadowPadding]; - UIEdgeInsets expectedInsets = UIEdgeInsetsMake(-shadowRadius, -shadowRadius, -shadowRadius, -shadowRadius); - XCTAssertTrue(UIEdgeInsetsEqualToEdgeInsets(shadowPadding, expectedInsets), @"Unexpected edge insets %@ for radius of %f ", NSStringFromUIEdgeInsets(shadowPadding), shadowRadius); - CGColorRelease(shadowColor); -} - -- (void)testShadowPaddingForRadiusOf4OffsetOf11 -{ - CGSize shadowOffset = CGSizeMake(1, 1); - CGColorRef shadowColor = CGColorRetain([UIColor blackColor].CGColor); - CGFloat shadowOpacity = 1; - CGFloat shadowRadius = 4; - _shadower = [[ASTextNodeShadower alloc] initWithShadowOffset:shadowOffset - shadowColor:shadowColor - shadowOpacity:shadowOpacity - shadowRadius:shadowRadius]; - UIEdgeInsets shadowPadding = [_shadower shadowPadding]; - UIEdgeInsets expectedInsets = UIEdgeInsetsMake(-shadowRadius + shadowOffset.height, // Top: -3 - -shadowRadius + shadowOffset.width, // Left: -3 - -shadowRadius - shadowOffset.height, // Bottom: -5 - -shadowRadius - shadowOffset.width); // Right: -5 - XCTAssertTrue(UIEdgeInsetsEqualToEdgeInsets(shadowPadding, expectedInsets), @"Unexpected edge insets %@ for radius of %f ", NSStringFromUIEdgeInsets(shadowPadding), shadowRadius); - CGColorRelease(shadowColor); -} - -- (void)testShadowPaddingForRadiusOf4OffsetOfNegative11 -{ - CGSize shadowOffset = CGSizeMake(-1, -1); - CGColorRef shadowColor = CGColorRetain([UIColor blackColor].CGColor); - CGFloat shadowOpacity = 1; - CGFloat shadowRadius = 4; - _shadower = [[ASTextNodeShadower alloc] initWithShadowOffset:shadowOffset - shadowColor:shadowColor - shadowOpacity:shadowOpacity - shadowRadius:shadowRadius]; - UIEdgeInsets shadowPadding = [_shadower shadowPadding]; - UIEdgeInsets expectedInsets = UIEdgeInsetsMake(-shadowRadius + shadowOffset.height, // Top: -3 - -shadowRadius + shadowOffset.width, // Left: -5 - -shadowRadius - shadowOffset.height, // Bottom: -5 - -shadowRadius - shadowOffset.width); // Right: -3 - XCTAssertTrue(UIEdgeInsetsEqualToEdgeInsets(shadowPadding, expectedInsets), @"Unexpected edge insets %@ for radius of %f ", NSStringFromUIEdgeInsets(shadowPadding), shadowRadius); - CGColorRelease(shadowColor); -} - -- (void)testASDNEdgeInsetsInvert -{ - UIEdgeInsets insets = UIEdgeInsetsMake(-5, -7, -3, -2); - UIEdgeInsets invertedInsets = ASDNEdgeInsetsInvert(insets); - UIEdgeInsets expectedInsets = UIEdgeInsetsMake(5, 7, 3, 2); - XCTAssertTrue(UIEdgeInsetsEqualToEdgeInsets(invertedInsets, expectedInsets), @"Expected %@, actual result %@", NSStringFromUIEdgeInsets(expectedInsets), NSStringFromUIEdgeInsets(invertedInsets)); -} - -- (void)testASDNEdgeInsetsInvertDoubleNegation -{ - CGRect originalRect = CGRectMake(31, 32, 33, 34); - UIEdgeInsets insets = UIEdgeInsetsMake(-5, -7, -3, -2); - CGRect insettedRect = UIEdgeInsetsInsetRect(originalRect, insets); - CGRect outsettedInsettedRect = UIEdgeInsetsInsetRect(insettedRect, ASDNEdgeInsetsInvert(insets)); - XCTAssertTrue(CGRectEqualToRect(originalRect, outsettedInsettedRect), @"Insetting a CGRect, and then outsetting it (insetting with the negated edge insets) should return the original CGRect"); -} - -@end diff --git a/AsyncDisplayKitTests/ASTextNodeTests.m b/AsyncDisplayKitTests/ASTextNodeTests.m index c4f0789aa1..dec0625867 100644 --- a/AsyncDisplayKitTests/ASTextNodeTests.m +++ b/AsyncDisplayKitTests/ASTextNodeTests.m @@ -14,12 +14,16 @@ #import +static BOOL CGSizeEqualToSizeWithIn(CGSize size1, CGSize size2, CGFloat delta) +{ + return fabs(size1.width - size2.width) < delta && fabs(size1.height - size2.height) < delta; +} + @interface ASTextNodeTestDelegate : NSObject @property (nonatomic, copy, readonly) NSString *tappedLinkAttribute; @property (nonatomic, assign, readonly) id tappedLinkValue; - @end @implementation ASTextNodeTestDelegate @@ -103,8 +107,8 @@ CGSize constrainedSize = CGSizeMake(i, i); CGSize calculatedSize = [_textNode measure:constrainedSize]; CGSize recalculatedSize = [_textNode measure:calculatedSize]; - - XCTAssertTrue(CGSizeEqualToSize(calculatedSize, recalculatedSize), @"Recalculated size %@ should be same as original size %@", NSStringFromCGSize(recalculatedSize), NSStringFromCGSize(calculatedSize)); + + XCTAssertTrue(CGSizeEqualToSizeWithIn(calculatedSize, recalculatedSize, 4.0), @"Recalculated size %@ should be same as original size %@", NSStringFromCGSize(recalculatedSize), NSStringFromCGSize(calculatedSize)); } } @@ -115,7 +119,7 @@ CGSize calculatedSize = [_textNode measure:constrainedSize]; CGSize recalculatedSize = [_textNode measure:calculatedSize]; - XCTAssertTrue(CGSizeEqualToSize(calculatedSize, recalculatedSize), @"Recalculated size %@ should be same as original size %@", NSStringFromCGSize(recalculatedSize), NSStringFromCGSize(calculatedSize)); + XCTAssertTrue(CGSizeEqualToSizeWithIn(calculatedSize, recalculatedSize, 11.0), @"Recalculated size %@ should be same as original size %@", NSStringFromCGSize(recalculatedSize), NSStringFromCGSize(calculatedSize)); } } diff --git a/AsyncDisplayKitTests/ASTextNodeWordKernerTests.mm b/AsyncDisplayKitTests/ASTextNodeWordKernerTests.mm index 4768197ce0..6085a88b79 100644 --- a/AsyncDisplayKitTests/ASTextNodeWordKernerTests.mm +++ b/AsyncDisplayKitTests/ASTextNodeWordKernerTests.mm @@ -8,7 +8,7 @@ #import -#import "ASTextNodeTextKitHelpers.h" +#import "ASTextKitHelpers.h" #import "ASTextNodeTypes.h" #import "ASTextNodeWordKerner.h" diff --git a/examples/SocialAppLayout/Sample/PostNode.m b/examples/SocialAppLayout/Sample/PostNode.m index b7f2a9c961..bf1c5f22b5 100644 --- a/examples/SocialAppLayout/Sample/PostNode.m +++ b/examples/SocialAppLayout/Sample/PostNode.m @@ -31,7 +31,7 @@ _nameNode = [[ASTextNode alloc] init]; _nameNode.attributedString = [[NSAttributedString alloc] initWithString:_post.name attributes:[TextStyles nameStyle]]; - _nameNode.maximumLineCount = 1; + _nameNode.maximumNumberOfLines = 1; [self addSubnode:_nameNode]; // username node @@ -40,7 +40,7 @@ attributes:[TextStyles usernameStyle]]; _usernameNode.flexShrink = YES; //if name and username don't fit to cell width, allow username shrink _usernameNode.truncationMode = NSLineBreakByTruncatingTail; - _usernameNode.maximumLineCount = 1; + _usernameNode.maximumNumberOfLines = 1; [self addSubnode:_usernameNode];