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[ASDisplayNode] Force a layout pass on a visible node as soon as it enters preload state #779

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Jan 31, 2018
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[ASDisplayNode] Force a layout pass on a visible node as soon as it enters preload state #779

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2 changes: 1 addition & 1 deletion CHANGELOG.md
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Original file line number Diff line number Diff line change
Expand Up @@ -10,7 +10,7 @@
- [ASScrollNode] Ensure the node respects the given size range while calculating its layout. [#637](https://github.com/TextureGroup/Texture/pull/637) [Huy Nguyen](https://github.com/nguyenhuy)
- [ASScrollNode] Invalidate the node's calculated layout if its scrollable directions changed. Also add unit tests for the class. [#637](https://github.com/TextureGroup/Texture/pull/637) [Huy Nguyen](https://github.com/nguyenhuy)
- Add new unit testing to the layout engine. [Adlai Holler](https://github.com/Adlai-Holler) [#424](https://github.com/TextureGroup/Texture/pull/424)
- [Automatic Subnode Management] Nodes with ASM enabled now insert/delete their subnodes as soon as they enter preload state, so subnodes can start preloading right away. [Huy Nguyen](https://github.com/nguyenhuy) [#706](https://github.com/TextureGroup/Texture/pull/706) [#751](https://github.com/TextureGroup/Texture/pull/751)
- [Automatic Subnode Management] Nodes with ASM enabled now insert/delete their subnodes as soon as they enter preload state, so subnodes can start preloading right away. [Huy Nguyen](https://github.com/nguyenhuy) [#706](https://github.com/TextureGroup/Texture/pull/706)
- [ASCollectionNode] Added support for interactive item movement. [Adlai Holler](https://github.com/Adlai-Holler)
- Added an experimental "no-copy" rendering API. See ASGraphicsContext.h for info. [Adlai Holler](https://github.com/Adlai-Holler)
- Dropped support for iOS 8. [Adlai Holler](https://github.com/Adlai-Holler)
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10 changes: 1 addition & 9 deletions Source/ASDisplayNode.mm
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Expand Up @@ -3081,15 +3081,7 @@ - (void)didEnterPreloadState
// - If it doesn't have a calculated or pending layout that fits its current bounds, a measurement pass will occur
// (see -__layout and -_u_measureNodeWithBoundsIfNecessary:). This scenario is uncommon,
// and running a measurement pass here is a fine trade-off because preloading any time after this point would be late.
//
// Don't force a layout pass if the node is already visible. Soon CoreAnimation will trigger
// a (coalesced, thus more efficient) pass on the backing store. Rely on it instead.
BOOL shouldForceLayoutPass = NO;
{
ASDN::MutexLocker l(__instanceLock__);
shouldForceLayoutPass = _automaticallyManagesSubnodes && !ASInterfaceStateIncludesVisible(_interfaceState);
}
if (shouldForceLayoutPass) {
if (self.automaticallyManagesSubnodes) {
[self layoutIfNeeded];
}

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