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Merge pull request #603 from nguyenhuy/improved_external_relayout

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Improve relayout when constrained size of all nodes is changed
This commit is contained in:
appleguy 2015-08-15 22:07:50 -07:00
commit 3983bf2289
8 changed files with 27 additions and 87 deletions
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38
AsyncDisplayKit/ASCollectionView.mm
View File

@ -125,7 +125,7 @@ static BOOL _isInterceptedSelector(SEL sel)
ASBatchContext *_batchContext;
BOOL _pendingRelayoutForAllRows;
CGSize _maxSizeForNodesConstrainedSize;
}
@property (atomic, assign) BOOL asyncDataSourceLocked;
@ -170,16 +170,13 @@ static BOOL _isInterceptedSelector(SEL sel)
_performingBatchUpdates = NO;
_batchUpdateBlocks = [NSMutableArray array];
_collectionViewLayoutImplementsInsetSection = [layout respondsToSelector:@selector(sectionInset)];
_maxSizeForNodesConstrainedSize = self.bounds.size;
[self registerClass:[UICollectionViewCell class] forCellWithReuseIdentifier:@"_ASCollectionViewCell"];
if (ASSystemVersionLessThan8()) {
[[UIDevice currentDevice] beginGeneratingDeviceOrientationNotifications];
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(deviceOrientationDidChange) name:UIDeviceOrientationDidChangeNotification object:nil];
}
_collectionViewLayoutImplementsInsetSection = [layout respondsToSelector:@selector(sectionInset)];
return self;
}
@ -189,11 +186,6 @@ static BOOL _isInterceptedSelector(SEL sel)
// This bug might be iOS 7-specific.
super.delegate = nil;
super.dataSource = nil;
if (ASSystemVersionLessThan8()) {
[[NSNotificationCenter defaultCenter] removeObserver:self];
[[UIDevice currentDevice] endGeneratingDeviceOrientationNotifications];
}
}
#pragma mark -
@ -480,26 +472,12 @@ static BOOL _isInterceptedSelector(SEL sel)
}
}
#pragma mark -
#pragma mark Orientation Change Handling
- (void)traitCollectionDidChange:(UITraitCollection *)previousTraitCollection
{
_pendingRelayoutForAllRows = YES;
}
- (void)deviceOrientationDidChange
{
_pendingRelayoutForAllRows = YES;
}
- (void)layoutSubviews
{
[super layoutSubviews];
if (_pendingRelayoutForAllRows) {
_pendingRelayoutForAllRows = NO;
if (! CGSizeEqualToSize(_maxSizeForNodesConstrainedSize, self.bounds.size)) {
_maxSizeForNodesConstrainedSize = self.bounds.size;
[self performBatchAnimated:NO updates:^{
[_dataController relayoutAllRows];
} completion:nil];
@ -562,7 +540,7 @@ static BOOL _isInterceptedSelector(SEL sel)
if (_asyncDataSourceImplementsConstrainedSizeForNode) {
constrainedSize = [_asyncDataSource collectionView:self constrainedSizeForNodeAtIndexPath:indexPath];
} else {
CGSize maxSize = self.bounds.size;
CGSize maxSize = _maxSizeForNodesConstrainedSize;
if (ASScrollDirectionContainsHorizontalDirection([self scrollableDirections])) {
maxSize.width = FLT_MAX;
} else {

33
AsyncDisplayKit/ASTableView.mm
View File

@ -146,9 +146,9 @@ static BOOL _isInterceptedSelector(SEL sel)
NSIndexPath *_contentOffsetAdjustmentTopVisibleRow;
CGFloat _contentOffsetAdjustment;
BOOL _pendingRelayoutForAllRows;
BOOL _asyncDataSourceImplementsConstrainedSizeForNode;
CGFloat _maxWidthForNodesConstrainedSize;
}
@property (atomic, assign) BOOL asyncDataSourceLocked;
@ -202,10 +202,7 @@ void ASPerformBlockWithoutAnimation(BOOL withoutAnimation, void (^block)()) {
_automaticallyAdjustsContentOffset = NO;
if (ASSystemVersionLessThan8()) {
[[UIDevice currentDevice] beginGeneratingDeviceOrientationNotifications];
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(deviceOrientationDidChange) name:UIDeviceOrientationDidChangeNotification object:nil];
}
_maxWidthForNodesConstrainedSize = self.bounds.size.width;
}
- (instancetype)initWithFrame:(CGRect)frame style:(UITableViewStyle)style
@ -243,11 +240,6 @@ void ASPerformBlockWithoutAnimation(BOOL withoutAnimation, void (^block)()) {
// This bug might be iOS 7-specific.
super.delegate = nil;
super.dataSource = nil;
if (ASSystemVersionLessThan8()) {
[[NSNotificationCenter defaultCenter] removeObserver:self];
[[UIDevice currentDevice] endGeneratingDeviceOrientationNotifications];
}
}
#pragma mark -
@ -373,25 +365,12 @@ void ASPerformBlockWithoutAnimation(BOOL withoutAnimation, void (^block)()) {
[_dataController endUpdatesAnimated:animated completion:completion];
}
#pragma mark -
#pragma mark Orientation Change Handling
- (void)traitCollectionDidChange:(UITraitCollection *)previousTraitCollection
{
_pendingRelayoutForAllRows = YES;
}
- (void)deviceOrientationDidChange
{
_pendingRelayoutForAllRows = YES;
}
- (void)layoutSubviews
{
[super layoutSubviews];
if (_pendingRelayoutForAllRows) {
_pendingRelayoutForAllRows = NO;
if (_maxWidthForNodesConstrainedSize != self.bounds.size.width) {
_maxWidthForNodesConstrainedSize = self.bounds.size.width;
[self beginUpdates];
[_dataController relayoutAllRows];
[self endUpdates];
@ -812,7 +791,7 @@ void ASPerformBlockWithoutAnimation(BOOL withoutAnimation, void (^block)()) {
}
// Default size range
return ASSizeRangeMake(CGSizeZero, CGSizeMake(self.bounds.size.width, FLT_MAX));
return ASSizeRangeMake(CGSizeZero, CGSizeMake(_maxWidthForNodesConstrainedSize, FLT_MAX));
}
- (void)dataControllerLockDataSource

4
AsyncDisplayKit/Details/ASDataController.h
View File

@ -156,8 +156,8 @@ typedef NSUInteger ASDataControllerAnimationOptions;
- (void)reloadRowsAtIndexPaths:(NSArray *)indexPaths withAnimationOptions:(ASDataControllerAnimationOptions)animationOptions;
/**
* Re-measures all loaded nodes. Used for external relayout (relayout that is caused by a change in constrained size of each and every cell node,
* for example, after an orientation change).
* Re-measures all loaded nodes. Used to respond to a change in size of the containing view
* (e.g. ASTableView or ASCollectionView after an orientation change).
*/
- (void)relayoutAllRows;

17
AsyncDisplayKit/Details/ASDataController.mm
View File

@ -564,15 +564,14 @@ static void *kASSizingQueueContext = &kASSizingQueueContext;
LOG(@"Edit Command - relayoutRows");
[_editingTransactionQueue waitUntilAllOperationsAreFinished];
NSArray *indexPaths = ASIndexPathsForMultidimensionalArray(_completedNodes);
NSArray *loadedNodes = ASFindElementsInMultidimensionalArrayAtIndexPaths(_completedNodes, indexPaths);
for (NSUInteger i = 0; i < loadedNodes.count && i < indexPaths.count; i++) {
ASSizeRange constrainedSize = [_dataSource dataController:self constrainedSizeForNodeAtIndexPath:indexPaths[i]];
ASCellNode *node = loadedNodes[i];
[node measureWithSizeRange:constrainedSize];
node.frame = CGRectMake(0.0f, 0.0f, node.calculatedSize.width, node.calculatedSize.height);
}
[_completedNodes enumerateObjectsUsingBlock:^(NSMutableArray *section, NSUInteger sectionIndex, BOOL *stop) {
[section enumerateObjectsUsingBlock:^(ASCellNode *node, NSUInteger rowIndex, BOOL *stop) {
ASSizeRange constrainedSize = [_dataSource dataController:self
constrainedSizeForNodeAtIndexPath:[NSIndexPath indexPathForRow:rowIndex inSection:sectionIndex]];
[node measureWithSizeRange:constrainedSize];
node.frame = CGRectMake(0.0f, 0.0f, node.calculatedSize.width, node.calculatedSize.height);
}];
}];
}];
}

4
AsyncDisplayKit/Private/ASInternalHelpers.h
View File

@ -24,8 +24,4 @@ CGFloat ASCeilPixelValue(CGFloat f);
CGFloat ASRoundPixelValue(CGFloat f);
BOOL ASSystemVersionLessThan8();
BOOL ASSystemVersionLessThanVersion(NSString *version);
ASDISPLAYNODE_EXTERN_C_END

15
AsyncDisplayKit/Private/ASInternalHelpers.mm
View File

@ -61,18 +61,3 @@ CGFloat ASRoundPixelValue(CGFloat f)
{
return roundf(f * ASScreenScale()) / ASScreenScale();
}
BOOL ASSystemVersionLessThan8()
{
static BOOL lessThan8;
static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^{
lessThan8 = ASSystemVersionLessThanVersion(@"8");
});
return lessThan8;
}
BOOL ASSystemVersionLessThanVersion(NSString *version)
{
return [[[UIDevice currentDevice] systemVersion] compare:version options:NSNumericSearch] == NSOrderedAscending;
}

2
examples/Kittens/Sample.xcodeproj/project.pbxproj
View File

@ -314,6 +314,7 @@
IPHONEOS_DEPLOYMENT_TARGET = 7.1;
LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks";
PRODUCT_NAME = "$(TARGET_NAME)";
TARGETED_DEVICE_FAMILY = "1,2";
};
name = Debug;
};
@ -326,6 +327,7 @@
IPHONEOS_DEPLOYMENT_TARGET = 7.1;
LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks";
PRODUCT_NAME = "$(TARGET_NAME)";
TARGETED_DEVICE_FAMILY = "1,2";
};
name = Release;
};

1
examples/Kittens/Sample/ViewController.m
View File

@ -59,6 +59,7 @@ static const NSInteger kMaxLitterSize = 100; // max number of kitten cell
_blurbNodeIndexPath = [NSIndexPath indexPathForItem:0 inSection:0];
self.title = @"Kittens";
self.navigationItem.rightBarButtonItem = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemEdit
target:self
action:@selector(toggleEditingMode)];