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Merge pull request #479 from joostvandijk/rasterized-node-offset

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Fix offset issue for rasterized nodes
This commit is contained in:
appleguy 2015-06-13 17:35:55 -07:00
commit 2a7f45ed40
1 changed files with 16 additions and 8 deletions
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24
AsyncDisplayKit/Private/ASDisplayNode+AsyncDisplay.mm
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@ -87,15 +87,23 @@ static void __ASDisplayLayerDecrementConcurrentDisplayCount(BOOL displayIsAsync,
// Capture these outside the display block so they are retained.
UIColor *backgroundColor = self.backgroundColor;
CGRect bounds = self.bounds;
CGPoint position = self.position;
CGPoint anchorPoint = self.anchorPoint;
// Pretty hacky since full 3D transforms aren't actually supported, but attempt to compute the transformed frame of this node so that we can composite it into approximately the right spot.
CGAffineTransform transform = CATransform3DGetAffineTransform(self.transform);
CGSize scaledBoundsSize = CGSizeApplyAffineTransform(bounds.size, transform);
CGPoint origin = CGPointMake(position.x - scaledBoundsSize.width * anchorPoint.x,
position.y - scaledBoundsSize.height * anchorPoint.y);
CGRect frame = CGRectMake(origin.x, origin.y, bounds.size.width, bounds.size.height);
CGRect frame;
// If this is the root container node, use a frame with a zero origin to draw into. If not, calculate the correct frame using the node's position, transform and anchorPoint.
if (self.shouldRasterizeDescendants) {
frame = CGRectMake(0.0f, 0.0f, bounds.size.width, bounds.size.height);
} else {
CGPoint position = self.position;
CGPoint anchorPoint = self.anchorPoint;
// Pretty hacky since full 3D transforms aren't actually supported, but attempt to compute the transformed frame of this node so that we can composite it into approximately the right spot.
CGAffineTransform transform = CATransform3DGetAffineTransform(self.transform);
CGSize scaledBoundsSize = CGSizeApplyAffineTransform(bounds.size, transform);
CGPoint origin = CGPointMake(position.x - scaledBoundsSize.width * anchorPoint.x,
position.y - scaledBoundsSize.height * anchorPoint.y);
frame = CGRectMake(origin.x, origin.y, bounds.size.width, bounds.size.height);
}
// Get the display block for this node.
asyncdisplaykit_async_transaction_operation_block_t displayBlock = [self _displayBlockWithAsynchronous:NO isCancelledBlock:isCancelledBlock rasterizing:YES];