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Bug 1301258 - Part 1: Define macros for change hints always, never and sometimes handled for descendants. r=dbaron
MozReview-Commit-ID: 1lOl7U6rlC5
This commit is contained in:
Cameron McCormack
Родитель
ae9a9c7afe
Коммит
d2bf6adc7c
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@ -219,10 +219,17 @@ enum nsChangeHint {
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*/
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*/
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nsChangeHint_AddOrRemoveTransform = 1 << 27,
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nsChangeHint_AddOrRemoveTransform = 1 << 27,
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// IMPORTANT NOTE: When adding new hints, consider whether you need
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// IMPORTANT NOTE: When adding a new hint, you will need to add it to
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// to add them to NS_HintsNotHandledForDescendantsIn() below. Please
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// one of:
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// also add them to RestyleManager::ChangeHintToString and modify
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//
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// nsChangeHint_AllHints below accordingly.
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// * nsChangeHint_Hints_NeverHandledForDescendants
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// * nsChangeHint_Hints_AlwaysHandledForDescendants
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// * nsChangeHint_Hints_SometimesHandledForDescendants
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//
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// and you also may need to handle it in NS_HintsNotHandledForDescendantsIn.
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//
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// Please also add it to RestyleManager::ChangeHintToString and
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// modify nsChangeHint_AllHints below accordingly.
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/**
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/**
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* Dummy hint value for all hints. It exists for compile time check.
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* Dummy hint value for all hints. It exists for compile time check.
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@ -298,46 +305,71 @@ inline nsChangeHint operator^=(nsChangeHint& aLeft, nsChangeHint aRight)
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* in the same hint being handled on the descendants.
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* in the same hint being handled on the descendants.
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*/
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*/
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// The change hints that are always handled for descendants.
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#define nsChangeHint_Hints_AlwaysHandledForDescendants ( \
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nsChangeHint_ClearDescendantIntrinsics | \
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nsChangeHint_NeedDirtyReflow | \
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nsChangeHint_NeutralChange | \
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nsChangeHint_ReconstructFrame | \
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nsChangeHint_RepaintFrame | \
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nsChangeHint_SchedulePaint | \
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nsChangeHint_SyncFrameView | \
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nsChangeHint_UpdateCursor | \
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nsChangeHint_UpdateSubtreeOverflow | \
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nsChangeHint_UpdateTextPath \
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)
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// The change hints that are never handled for descendants.
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#define nsChangeHint_Hints_NeverHandledForDescendants ( \
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nsChangeHint_BorderStyleNoneChange | \
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nsChangeHint_ChildrenOnlyTransform | \
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nsChangeHint_InvalidateRenderingObservers | \
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nsChangeHint_RecomputePosition | \
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nsChangeHint_UpdateBackgroundPosition | \
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nsChangeHint_UpdateComputedBSize | \
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nsChangeHint_UpdateContainingBlock | \
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nsChangeHint_UpdateEffects | \
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nsChangeHint_UpdateOpacityLayer | \
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nsChangeHint_UpdateOverflow | \
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nsChangeHint_UpdateParentOverflow | \
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nsChangeHint_UpdatePostTransformOverflow | \
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nsChangeHint_UpdateTransformLayer | \
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nsChangeHint_UpdateUsesOpacity | \
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nsChangeHint_AddOrRemoveTransform \
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)
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// The change hints that are sometimes considered to be handled for descendants.
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#define nsChangeHint_Hints_SometimesHandledForDescendants (\
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nsChangeHint_ClearAncestorIntrinsics | \
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nsChangeHint_NeedReflow | \
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nsChangeHint_ReflowChangesSizeOrPosition \
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)
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static_assert(!(nsChangeHint_Hints_AlwaysHandledForDescendants &
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nsChangeHint_Hints_NeverHandledForDescendants) &&
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!(nsChangeHint_Hints_AlwaysHandledForDescendants &
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nsChangeHint_Hints_SometimesHandledForDescendants) &&
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!(nsChangeHint_Hints_NeverHandledForDescendants &
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nsChangeHint_Hints_SometimesHandledForDescendants) &&
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!(nsChangeHint_AllHints ^
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nsChangeHint_Hints_AlwaysHandledForDescendants ^
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nsChangeHint_Hints_NeverHandledForDescendants ^
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nsChangeHint_Hints_SometimesHandledForDescendants),
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"change hints must be present in exactly one of "
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"nsChangeHint_Hints_{Always,Never,Sometimes}"
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"HandledForDescendants");
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// The most hints that NS_HintsNotHandledForDescendantsIn could possibly return:
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// The most hints that NS_HintsNotHandledForDescendantsIn could possibly return:
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#define nsChangeHint_Hints_NotHandledForDescendants nsChangeHint( \
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#define nsChangeHint_Hints_NotHandledForDescendants ( \
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nsChangeHint_UpdateTransformLayer | \
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nsChangeHint_Hints_NeverHandledForDescendants | \
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nsChangeHint_UpdateEffects | \
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nsChangeHint_Hints_SometimesHandledForDescendants \
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nsChangeHint_InvalidateRenderingObservers | \
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)
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nsChangeHint_UpdateOpacityLayer | \
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nsChangeHint_UpdateOverflow | \
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nsChangeHint_UpdatePostTransformOverflow | \
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nsChangeHint_UpdateParentOverflow | \
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nsChangeHint_ChildrenOnlyTransform | \
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nsChangeHint_RecomputePosition | \
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nsChangeHint_UpdateContainingBlock | \
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nsChangeHint_AddOrRemoveTransform | \
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nsChangeHint_BorderStyleNoneChange | \
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nsChangeHint_NeedReflow | \
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nsChangeHint_ReflowChangesSizeOrPosition | \
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nsChangeHint_ClearAncestorIntrinsics | \
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nsChangeHint_UpdateComputedBSize | \
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nsChangeHint_UpdateUsesOpacity | \
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nsChangeHint_UpdateBackgroundPosition)
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// NB: Once we drop support for the old style system, this logic should be
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// NB: Once we drop support for the old style system, this logic should be
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// inlined in the Servo style system to eliminate the FFI call.
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// inlined in the Servo style system to eliminate the FFI call.
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inline nsChangeHint NS_HintsNotHandledForDescendantsIn(nsChangeHint aChangeHint) {
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inline nsChangeHint NS_HintsNotHandledForDescendantsIn(nsChangeHint aChangeHint) {
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nsChangeHint result = nsChangeHint(aChangeHint & (
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nsChangeHint result =
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nsChangeHint_UpdateTransformLayer |
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aChangeHint & nsChangeHint_Hints_NeverHandledForDescendants;
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nsChangeHint_UpdateEffects |
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nsChangeHint_InvalidateRenderingObservers |
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nsChangeHint_UpdateOpacityLayer |
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nsChangeHint_UpdateOverflow |
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nsChangeHint_UpdatePostTransformOverflow |
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nsChangeHint_UpdateParentOverflow |
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nsChangeHint_ChildrenOnlyTransform |
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nsChangeHint_RecomputePosition |
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nsChangeHint_UpdateContainingBlock |
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nsChangeHint_AddOrRemoveTransform |
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nsChangeHint_BorderStyleNoneChange |
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nsChangeHint_UpdateComputedBSize |
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nsChangeHint_UpdateUsesOpacity | \
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nsChangeHint_UpdateBackgroundPosition));
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if (!NS_IsHintSubset(nsChangeHint_NeedDirtyReflow, aChangeHint)) {
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if (!NS_IsHintSubset(nsChangeHint_NeedDirtyReflow, aChangeHint)) {
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if (NS_IsHintSubset(nsChangeHint_NeedReflow, aChangeHint)) {
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if (NS_IsHintSubset(nsChangeHint_NeedReflow, aChangeHint)) {
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