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Add expectedSize to ASNetworkImageNode

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ASNetworkImageNode defers to ASImageNode to return its calculatedSize. ASImageNode returns the size of its image. There is a good chance that ASNetworkImageNode hasn't downloaded its image yet when calculatedSize is called, so it returns a size of CGSizeZero.

On top of that, it is possible that the size of the image is not actually the size that we wish to display in our node.

I've added an "expectedImageSize" property that can be used to determine the calculatedSize of an ASNetworkImageNode.
This commit is contained in:
ricky cancro
2015-07-30 16:50:11 -07:00
committed by rcancro
parent 8da9ddd884
commit b58e8344c0
4 changed files with 27 additions and 6 deletions
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8
AsyncDisplayKit/ASDisplayNode.h
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@@ -185,6 +185,14 @@ typedef CALayer *(^ASDisplayNodeLayerBlock)();
*/
@property (nonatomic, readonly, assign) ASSizeRange constrainedSizeForCalculatedLayout;
/**
* @abstract Used by some implementations of measureWithSizeRange: to provide an intrisic content size
* to a node when one cannot be computed from its subnodes
*
* @return The preferred frame size of this node
*/
@property (atomic, assign, readwrite) CGSize preferredFrameSize;
/** @name Managing the nodes hierarchy */