Renamed ASStackText... to ASBaselineStack...

This commit is contained in:
ricky cancro 2015-08-21 08:54:28 -07:00
parent 0a398301b0
commit 023ad89815
8 changed files with 98 additions and 74 deletions

View File

@ -217,14 +217,16 @@
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@ -566,10 +568,11 @@
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@ -936,8 +939,8 @@
ACF6ED481B17847A00DA7C62 /* ASStackPositionedLayout.mm */,
ACF6ED491B17847A00DA7C62 /* ASStackUnpositionedLayout.h */,
ACF6ED4A1B17847A00DA7C62 /* ASStackUnpositionedLayout.mm */,
9C204A621B86349B00313849 /* ASStackTextPositionedLayout.h */,
9C204A631B86349B00313849 /* ASStackTextPositionedLayout.mm */,
9C204A621B86349B00313849 /* ASBaselineStackPositionedLayout.h */,
9C204A631B86349B00313849 /* ASBaselineStackPositionedLayout.mm */,
);
path = Private;
sourceTree = "<group>";
@ -960,6 +963,7 @@
children = (
ACF6ED011B17843500DA7C62 /* ASBackgroundLayoutSpec.h */,
ACF6ED021B17843500DA7C62 /* ASBackgroundLayoutSpec.mm */,
9C204A681B87803A00313849 /* ASBaselineStackLayoutable.h */,
ACF6ED031B17843500DA7C62 /* ASCenterLayoutSpec.h */,
ACF6ED041B17843500DA7C62 /* ASCenterLayoutSpec.mm */,
ACF6ED071B17843500DA7C62 /* ASDimension.h */,
@ -983,8 +987,8 @@
ACF6ED171B17843500DA7C62 /* ASStackLayoutSpec.mm */,
ACF6ED181B17843500DA7C62 /* ASStaticLayoutSpec.h */,
ACF6ED191B17843500DA7C62 /* ASStaticLayoutSpec.mm */,
9C3061041B857EC400D0530B /* ASStackTextLayoutSpec.h */,
9C3061051B857EC400D0530B /* ASStackTextLayoutSpec.mm */,
9C3061041B857EC400D0530B /* ASBaselineStackLayoutSpec.h */,
9C3061051B857EC400D0530B /* ASBaselineStackLayoutSpec.mm */,
);
name = Layout;
path = ..;
@ -1045,6 +1049,7 @@
464052201A3F83C40061C0BA /* ASDataController.h in Headers */,
05A6D05A19D0EB64002DD95E /* ASDealloc2MainObject.h in Headers */,
0516FA401A1563D200B4EBED /* ASMultiplexImageNode.h in Headers */,
9C204A6A1B87803A00313849 /* ASBaselineStackLayoutable.h in Headers */,
058D0A47195D05CB00B7D73C /* ASControlNode.h in Headers */,
058D0A48195D05CB00B7D73C /* ASControlNode.m in Headers */,
058D0A49195D05CB00B7D73C /* ASControlNode+Subclasses.h in Headers */,
@ -1066,7 +1071,7 @@
0574D5E219C110940097DC25 /* ASTableViewProtocols.h in Headers */,
055F1A3C19ABD43F004DAFF1 /* ASCellNode.h in Headers */,
058D0A53195D05DC00B7D73C /* _ASDisplayLayer.h in Headers */,
9C204A641B86349B00313849 /* ASStackTextPositionedLayout.h in Headers */,
9C204A641B86349B00313849 /* ASBaselineStackPositionedLayout.h in Headers */,
058D0A54195D05DC00B7D73C /* _ASDisplayLayer.mm in Headers */,
058D0A55195D05DC00B7D73C /* _ASDisplayView.h in Headers */,
058D0A56195D05DC00B7D73C /* _ASDisplayView.mm in Headers */,
@ -1093,7 +1098,7 @@
058D0A67195D05DC00B7D73C /* NSMutableAttributedString+TextKitAdditions.m in Headers */,
058D0A68195D05EC00B7D73C /* _ASAsyncTransaction.h in Headers */,
205F0E0F1B371875007741D0 /* UICollectionViewLayout+ASConvenience.h in Headers */,
9C3061061B857EC400D0530B /* ASStackTextLayoutSpec.h in Headers */,
9C3061061B857EC400D0530B /* ASBaselineStackLayoutSpec.h in Headers */,
058D0A69195D05EC00B7D73C /* _ASAsyncTransaction.m in Headers */,
058D0A6A195D05EC00B7D73C /* _ASAsyncTransactionContainer+Private.h in Headers */,
058D0A6B195D05EC00B7D73C /* _ASAsyncTransactionContainer.h in Headers */,
@ -1159,7 +1164,7 @@
B35061FA1B010EFD0018CF92 /* ASControlNode+Subclasses.h in Headers */,
B35062371B010EFD0018CF92 /* ASTextNodeWordKerner.h in Headers */,
B35062261B010EFD0018CF92 /* ASRangeController.h in Headers */,
9C204A651B86349B00313849 /* ASStackTextPositionedLayout.h in Headers */,
9C204A651B86349B00313849 /* ASBaselineStackPositionedLayout.h in Headers */,
B35062111B010EFD0018CF92 /* _ASDisplayView.h in Headers */,
B35061F81B010EFD0018CF92 /* ASControlNode.h in Headers */,
430E7C901B4C23F100697A4C /* ASIndexPath.h in Headers */,
@ -1169,7 +1174,7 @@
B35061F31B010EFD0018CF92 /* ASCellNode.h in Headers */,
34EFC76C1B701CED00AD841F /* ASOverlayLayoutSpec.h in Headers */,
B35062201B010EFD0018CF92 /* ASLayoutController.h in Headers */,
9C3061071B857EC400D0530B /* ASStackTextLayoutSpec.h in Headers */,
9C3061071B857EC400D0530B /* ASBaselineStackLayoutSpec.h in Headers */,
B35062571B010F070018CF92 /* ASAssert.h in Headers */,
B35062411B010EFD0018CF92 /* _ASAsyncTransactionGroup.h in Headers */,
B350623C1B010EFD0018CF92 /* _ASAsyncTransaction.h in Headers */,
@ -1213,6 +1218,7 @@
34EFC7631B701CBF00AD841F /* ASCenterLayoutSpec.h in Headers */,
B350624D1B010EFD0018CF92 /* _ASScopeTimer.h in Headers */,
34EFC7701B701CFA00AD841F /* ASStackLayoutDefines.h in Headers */,
9C204A6B1B87803A00313849 /* ASBaselineStackLayoutable.h in Headers */,
509E68651B3AEDC5009B9150 /* CGRect+ASConvenience.h in Headers */,
B350624F1B010EFD0018CF92 /* ASDisplayNode+DebugTiming.h in Headers */,
B35062211B010EFD0018CF92 /* ASLayoutRangeType.h in Headers */,
@ -1435,7 +1441,7 @@
058D0A26195D050800B7D73C /* _ASCoreAnimationExtras.mm in Sources */,
058D0A23195D050800B7D73C /* _ASAsyncTransactionContainer.m in Sources */,
058D0A1E195D050800B7D73C /* ASTextNodeShadower.m in Sources */,
9C204A661B86349B00313849 /* ASStackTextPositionedLayout.mm in Sources */,
9C204A661B86349B00313849 /* ASBaselineStackPositionedLayout.mm in Sources */,
ACF6ED2E1B17843500DA7C62 /* ASRatioLayoutSpec.mm in Sources */,
058D0A18195D050800B7D73C /* _ASDisplayLayer.mm in Sources */,
ACF6ED321B17843500DA7C62 /* ASStaticLayoutSpec.mm in Sources */,
@ -1474,7 +1480,7 @@
0549634A1A1EA066000F8E56 /* ASBasicImageDownloader.mm in Sources */,
058D0A14195D050800B7D73C /* ASDisplayNode.mm in Sources */,
058D0A1B195D050800B7D73C /* ASMutableAttributedStringBuilder.m in Sources */,
9C3061081B857EC400D0530B /* ASStackTextLayoutSpec.mm in Sources */,
9C3061081B857EC400D0530B /* ASBaselineStackLayoutSpec.mm in Sources */,
058D0A2B195D050800B7D73C /* ASImageNode+CGExtras.m in Sources */,
058D0A24195D050800B7D73C /* _ASAsyncTransactionGroup.m in Sources */,
058D0A1C195D050800B7D73C /* ASTextNodeCoreTextAdditions.m in Sources */,
@ -1536,10 +1542,10 @@
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B35062311B010EFD0018CF92 /* ASTextNodeRenderer.mm in Sources */,
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View File

@ -7,6 +7,7 @@
*/
#import <AsyncDisplayKit/ASControlNode.h>
#import <AsyncDisplayKit/ASBaselineStackLayoutable.h>
@protocol ASTextNodeDelegate;
@ -30,7 +31,7 @@ typedef NS_ENUM(NSUInteger, ASTextNodeHighlightStyle) {
@abstract Draws interactive rich text.
@discussion Backed by TextKit.
*/
@interface ASTextNode : ASControlNode <ASStackTextLayoutable>
@interface ASTextNode : ASControlNode <ASBaselineStackLayoutable>
/**
@abstract The attributed string to show.

View File

@ -9,15 +9,16 @@
*/
#import <AsyncDisplayKit/ASStackLayoutSpec.h>
#import <AsyncDisplayKit/ASBaselineStackLayoutable.h>
typedef NS_ENUM(NSUInteger, ASStackTextLayoutBaselineAlignment) {
typedef NS_ENUM(NSUInteger, ASBaselineStackLayoutBaselineAlignment) {
/** No baseline alignment. This is only valid for a vertical stack */
ASStackTextLayoutBaselineAlignmentNone,
ASBaselineStackLayoutBaselineAlignmentNone,
/** Align all children to the first baseline. This is only valid for a horizontal stack */
ASStackTextLayoutBaselineAlignmentFirst,
ASBaselineStackLayoutBaselineAlignmentFirst,
/** Align all children to the last baseline. This is useful when a text node wraps and you want to align
to the bottom baseline. This is only valid for a horizontal stack */
ASStackTextLayoutBaselineAlignmentLast,
ASBaselineStackLayoutBaselineAlignmentLast,
};
@ -26,24 +27,24 @@ typedef struct {
ASStackLayoutSpecStyle stackLayoutStyle;
/** The type of baseline alignment */
ASStackTextLayoutBaselineAlignment baselineAlignment;
} ASStackTextLayoutSpecStyle;
ASBaselineStackLayoutBaselineAlignment baselineAlignment;
} ASBaselineStackLayoutSpecStyle;
/**
A specialized version of a stack layout that aligns its children on a baseline. This spec only works with
ASStackTextLayoutable children.
ASBaselineStackLayoutable children.
If the spec is created with a horizontal direction, the children will be laid on a common baseline.
If the spec is created with a vertical direction, a child's vertical spacing will be measured from its
baseline instead of from the child's bounding box.
*/
@interface ASStackTextLayoutSpec : ASLayoutSpec <ASStackTextLayoutable>
@interface ASBaselineStackLayoutSpec : ASLayoutSpec <ASBaselineStackLayoutable>
/**
@param style Specifies how children are laid out.
@param children ASTextLayoutable children to be positioned.
*/
+ (instancetype)newWithStyle:(ASStackTextLayoutSpecStyle)style children:(NSArray *)children;
+ (instancetype)newWithStyle:(ASBaselineStackLayoutSpecStyle)style children:(NSArray *)children;
@end

View File

@ -8,7 +8,7 @@
*
*/
#import "ASStackTextLayoutSpec.h"
#import "ASBaselineStackLayoutSpec.h"
#import "ASStackLayoutable.h"
#import <numeric>
@ -21,13 +21,13 @@
#import "ASStackLayoutSpecUtilities.h"
#import "ASStackPositionedLayout.h"
#import "ASStackUnpositionedLayout.h"
#import "ASStackTextPositionedLayout.h"
#import "ASBaselineStackPositionedLayout.h"
#import "ASThread.h"
@implementation ASStackTextLayoutSpec
@implementation ASBaselineStackLayoutSpec
{
ASStackTextLayoutSpecStyle _textStyle;
ASBaselineStackLayoutSpecStyle _textStyle;
std::vector<id<ASStackLayoutable>> _stackChildren;
ASDN::RecursiveMutex _propertyLock;
}
@ -35,16 +35,16 @@
@synthesize ascender = _ascender;
@synthesize descender = _descender;
+ (instancetype)newWithStyle:(ASStackTextLayoutSpecStyle)style children:(NSArray *)children
+ (instancetype)newWithStyle:(ASBaselineStackLayoutSpecStyle)style children:(NSArray *)children
{
ASDisplayNodeAssert((style.stackLayoutStyle.direction == ASStackLayoutDirectionHorizontal && style.baselineAlignment != ASStackTextLayoutBaselineAlignmentNone) || style.stackLayoutStyle.direction == ASStackLayoutDirectionVertical, @"baselineAlignment is set to none. If you don't need baseline alignment please use ASStackLayoutSpec");
ASDisplayNodeAssert((style.stackLayoutStyle.direction == ASStackLayoutDirectionHorizontal && style.baselineAlignment != ASBaselineStackLayoutBaselineAlignmentNone) || style.stackLayoutStyle.direction == ASStackLayoutDirectionVertical, @"baselineAlignment is set to none. If you don't need baseline alignment please use ASStackLayoutSpec");
ASStackTextLayoutSpec *spec = [super new];
ASBaselineStackLayoutSpec *spec = [super new];
if (spec) {
spec->_textStyle = style;
spec->_stackChildren = std::vector<id<ASStackLayoutable>>();
for (id<ASStackTextLayoutable> child in children) {
ASDisplayNodeAssert([child conformsToProtocol:@protocol(ASStackTextLayoutable)], @"child must conform to ASStackLayoutable");
for (id<ASBaselineStackLayoutable> child in children) {
ASDisplayNodeAssert([child conformsToProtocol:@protocol(ASBaselineStackLayoutable)], @"child must conform to ASStackLayoutable");
spec->_stackChildren.push_back(child);
}
@ -63,7 +63,7 @@
const auto unpositionedLayout = ASStackUnpositionedLayout::compute(_stackChildren, stackStyle, constrainedSize);
const auto positionedLayout = ASStackPositionedLayout::compute(unpositionedLayout, stackStyle, constrainedSize);
const auto baselinePositionedLayout = ASStackTextPositionedLayout::compute(positionedLayout, _textStyle, constrainedSize);
const auto baselinePositionedLayout = ASBaselineStackPositionedLayout::compute(positionedLayout, _textStyle, constrainedSize);
const CGSize finalSize = directionSize(stackStyle.direction, unpositionedLayout.stackDimensionSum, baselinePositionedLayout.crossSize);

View File

@ -0,0 +1,23 @@
//
// ASBaselineStackLayoutable.h
// AsyncDisplayKit
//
// Created by Ricky Cancro on 8/21/15.
// Copyright (c) 2015 Facebook. All rights reserved.
//
#import "ASStackLayoutable.h"
@protocol ASBaselineStackLayoutable <ASStackLayoutable>
/**
* @abstract The distance from the top of the layoutable object to its baseline
*/
@property (nonatomic, readwrite) CGFloat ascender;
/**
* @abstract The distance from the bottom of the layoutable object to its baseline
*/
@property (nonatomic, readwrite) CGFloat descender;
@end

View File

@ -50,10 +50,3 @@
@property (nonatomic, readwrite) ASStackLayoutAlignSelf alignSelf;
@end
@protocol ASStackTextLayoutable <ASStackLayoutable>
@property (nonatomic, readwrite) CGFloat ascender;
@property (nonatomic, readwrite) CGFloat descender;
@end

View File

@ -10,17 +10,17 @@
#import "ASLayout.h"
#import "ASDimension.h"
#import "ASStackTextLayoutSpec.h"
#import "ASBaselineStackLayoutSpec.h"
#import "ASStackPositionedLayout.h"
struct ASStackTextPositionedLayout {
struct ASBaselineStackPositionedLayout {
const std::vector<ASLayout *> sublayouts;
const CGFloat crossSize;
const CGFloat ascender;
const CGFloat descender;
/** Given a positioned layout, computes each child position using baseline alignment. */
static ASStackTextPositionedLayout compute(const ASStackPositionedLayout &positionedLayout,
const ASStackTextLayoutSpecStyle &textStyle,
static ASBaselineStackPositionedLayout compute(const ASStackPositionedLayout &positionedLayout,
const ASBaselineStackLayoutSpecStyle &textStyle,
const ASSizeRange &constrainedSize);
};

View File

@ -8,39 +8,39 @@
*
*/
#import "ASStackTextPositionedLayout.h"
#import "ASBaselineStackPositionedLayout.h"
#import "ASLayoutSpecUtilities.h"
#import "ASStackLayoutSpecUtilities.h"
static CGFloat baselineForItem(const ASStackTextLayoutSpecStyle &style,
static CGFloat baselineForItem(const ASBaselineStackLayoutSpecStyle &style,
const ASLayout *layout) {
__weak id<ASStackTextLayoutable> textChild = (id<ASStackTextLayoutable>) layout.layoutableObject;
__weak id<ASBaselineStackLayoutable> textChild = (id<ASBaselineStackLayoutable>) layout.layoutableObject;
switch (style.baselineAlignment) {
case ASStackTextLayoutBaselineAlignmentNone:
case ASBaselineStackLayoutBaselineAlignmentNone:
return 0;
case ASStackTextLayoutBaselineAlignmentFirst:
case ASBaselineStackLayoutBaselineAlignmentFirst:
return textChild.ascender;
case ASStackTextLayoutBaselineAlignmentLast:
case ASBaselineStackLayoutBaselineAlignmentLast:
return layout.size.height + textChild.descender;
}
}
static CGFloat baselineOffset(const ASStackTextLayoutSpecStyle &style,
static CGFloat baselineOffset(const ASBaselineStackLayoutSpecStyle &style,
const ASLayout *l,
const CGFloat maxAscender,
const CGFloat maxBaseline)
{
if (style.stackLayoutStyle.direction == ASStackLayoutDirectionHorizontal) {
__weak id<ASStackTextLayoutable> textChild = (id<ASStackTextLayoutable>)l.layoutableObject;
__weak id<ASBaselineStackLayoutable> textChild = (id<ASBaselineStackLayoutable>)l.layoutableObject;
switch (style.baselineAlignment) {
case ASStackTextLayoutBaselineAlignmentFirst:
case ASBaselineStackLayoutBaselineAlignmentFirst:
return maxAscender - textChild.ascender;
case ASStackTextLayoutBaselineAlignmentLast:
case ASBaselineStackLayoutBaselineAlignmentLast:
return maxBaseline - baselineForItem(style, l);
case ASStackTextLayoutBaselineAlignmentNone:
case ASBaselineStackLayoutBaselineAlignmentNone:
return 0;
}
}
@ -55,8 +55,8 @@ static CGFloat maxDimensionForLayout(const ASLayout *l,
return maxDimension;
}
ASStackTextPositionedLayout ASStackTextPositionedLayout::compute(const ASStackPositionedLayout &positionedLayout,
const ASStackTextLayoutSpecStyle &textStyle,
ASBaselineStackPositionedLayout ASBaselineStackPositionedLayout::compute(const ASStackPositionedLayout &positionedLayout,
const ASBaselineStackLayoutSpecStyle &textStyle,
const ASSizeRange &constrainedSize)
{
ASStackLayoutSpecStyle stackStyle = textStyle.stackLayoutStyle;
@ -68,16 +68,16 @@ ASStackTextPositionedLayout ASStackTextPositionedLayout::compute(const ASStackPo
});
const CGFloat maxBaseline = baselineIt == positionedLayout.sublayouts.end() ? 0 : baselineForItem(textStyle, *baselineIt);
// find the largest ascender for all children. This value will be used in offset computation as well as sent back to the ASStackTextLayoutSpec as its ascender.
// find the largest ascender for all children. This value will be used in offset computation as well as sent back to the ASBaselineStackLayoutSpec as its ascender.
const auto ascenderIt = std::max_element(positionedLayout.sublayouts.begin(), positionedLayout.sublayouts.end(), [&](const ASLayout *a, const ASLayout *b){
return ((id<ASStackTextLayoutable>)a.layoutableObject).ascender < ((id<ASStackTextLayoutable>)b.layoutableObject).ascender;
return ((id<ASBaselineStackLayoutable>)a.layoutableObject).ascender < ((id<ASBaselineStackLayoutable>)b.layoutableObject).ascender;
});
const CGFloat maxAscender = baselineIt == positionedLayout.sublayouts.end() ? 0 : ((id<ASStackTextLayoutable>)(*ascenderIt).layoutableObject).ascender;
const CGFloat maxAscender = baselineIt == positionedLayout.sublayouts.end() ? 0 : ((id<ASBaselineStackLayoutable>)(*ascenderIt).layoutableObject).ascender;
CGPoint p = CGPointZero;
BOOL first = YES;
auto stackedChildren = AS::map(positionedLayout.sublayouts, [&](ASLayout *l) -> ASLayout *{
__weak id<ASStackTextLayoutable> textChild = (id<ASStackTextLayoutable>) l.layoutableObject;
__weak id<ASBaselineStackLayoutable> textChild = (id<ASBaselineStackLayoutable>) l.layoutableObject;
p = p + directionPoint(stackStyle.direction, textChild.spacingBefore, 0);
if (first) {
// if this is the first item use the previously computed start point
@ -108,11 +108,11 @@ ASStackTextPositionedLayout ASStackTextPositionedLayout::compute(const ASStackPo
const auto maxCrossSize = crossDimension(stackStyle.direction, constrainedSize.max);
const CGFloat crossSize = MIN(MAX(minCrossSize, largestChildCrossSize), maxCrossSize);
// find the child with the largest height. Use that child's descender as the descender to pass back to the ASStackTextLayoutSpec.
// find the child with the largest height. Use that child's descender as the descender to pass back to the ASBaselineStackLayoutSpec.
const auto descenderIt = std::max_element(stackedChildren.begin(), stackedChildren.end(), [&](const ASLayout *a, const ASLayout *b){
return a.position.y + a.size.height < b.position.y + b.size.height;
});
const CGFloat minDescender = descenderIt == stackedChildren.end() ? 0 : ((id<ASStackTextLayoutable>)(*descenderIt).layoutableObject).descender;
const CGFloat minDescender = descenderIt == stackedChildren.end() ? 0 : ((id<ASBaselineStackLayoutable>)(*descenderIt).layoutableObject).descender;
return {stackedChildren, crossSize, maxAscender, minDescender};
}