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Clean up timing of layout tree flattening/ copying of unflattened tree for Weaver #1157

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merged 6 commits into from
Oct 3, 2018
Merged

Clean up timing of layout tree flattening/ copying of unflattened tree for Weaver #1157

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584dae2
Merge pull request #2 from TextureGroup/master
mikezucc Oct 2, 2018
a23f114
Simpler Huy fix for more efficient delayed flattening of the layout tree
mikezucc Oct 2, 2018
61d26fa
Nit
mikezucc Oct 2, 2018
bd6e10a
Remove pbx changes
mikezucc Oct 2, 2018
0ae0b03
Update CHANGELOG.md
mikezucc Oct 2, 2018
3abbfe5
Add note about change in timing of _flattenedLayout capture
mikezucc Oct 3, 2018
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12 changes: 0 additions & 12 deletions Source/ASDisplayNode+Layout.mm
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Original file line number Diff line number Diff line change
Expand Up @@ -993,12 +993,6 @@ - (void)_pendingLayoutTransitionDidComplete
_pendingLayoutTransition = nil;
}

- (void)_setCalculatedDisplayNodeLayout:(const ASDisplayNodeLayout &)displayNodeLayout
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@nguyenhuy nguyenhuy Oct 2, 2018 •
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For the record, this method is not called anywhere.

{
ASDN::MutexLocker l(__instanceLock__);
[self _locked_setCalculatedDisplayNodeLayout:displayNodeLayout];
}

- (void)_locked_setCalculatedDisplayNodeLayout:(const ASDisplayNodeLayout &)displayNodeLayout
{
ASAssertLocked(__instanceLock__);
Expand All @@ -1007,12 +1001,6 @@ - (void)_locked_setCalculatedDisplayNodeLayout:(const ASDisplayNodeLayout &)disp
ASDisplayNodeAssertTrue(displayNodeLayout.layout.size.height >= 0.0);

_calculatedDisplayNodeLayout = displayNodeLayout;

// Flatten the layout if it wasn't done before (@see -calculateLayoutThatFits:).
if ([ASDisplayNode shouldStoreUnflattenedLayouts]) {
_unflattenedLayout = _calculatedDisplayNodeLayout.layout;
_calculatedDisplayNodeLayout.layout = [_unflattenedLayout filteredNodeLayoutTree];
}
}

@end
7 changes: 3 additions & 4 deletions Source/ASDisplayNode.mm
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Expand Up @@ -1220,11 +1220,10 @@ - (ASLayout *)calculateLayoutThatFits:(ASSizeRange)constrainedSize
}
ASDisplayNodeLogEvent(self, @"computedLayout: %@", layout);

// Return the (original) unflattened layout if it needs to be stored. The layout will be flattened later on (@see _locked_setCalculatedDisplayNodeLayout:).
// Otherwise, flatten it right away.
if (! [ASDisplayNode shouldStoreUnflattenedLayouts]) {
layout = [layout filteredNodeLayoutTree];
if ([ASDisplayNode shouldStoreUnflattenedLayouts]) {
_unflattenedLayout = layout;
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@nguyenhuy nguyenhuy Oct 2, 2018 •
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As discussed offline, there is a risk that the layout here will not be used/applied later on, and Weaver (or any other users of this API) will end up with a wrong unflattened layout. But given it's a debugging feature and should not be used in producation, the risk is small and doesn't warrant the complexity of previous implementation.

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Can you add some comment about this fact?

}
layout = [layout filteredNodeLayoutTree];

return layout;
}
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