Title: [91497] trunk/Source/WebCore
- Revision
- 91497
- Author
- [email protected]
- Date
- 2011-07-21 14:16:02 -0700 (Thu, 21 Jul 2011)
Log Message
https://bugs.webkit.org/show_bug.cgi?id=64975
Elements that have columns (e.g., column-width or column-count non-auto) and elements that have
column-spans establish block formatting contexts, and therefore they should not be allowing
child margins to collapse with their own margins.
Reviewed by Beth Dakin.
Covered by existing tests.
* rendering/RenderBlock.cpp:
(WebCore::RenderBlock::MarginInfo::MarginInfo):
Modified Paths
Diff
Modified: trunk/Source/WebCore/ChangeLog (91496 => 91497)
--- trunk/Source/WebCore/ChangeLog 2011-07-21 20:49:38 UTC (rev 91496)
+++ trunk/Source/WebCore/ChangeLog 2011-07-21 21:16:02 UTC (rev 91497)
@@ -1,3 +1,17 @@
+2011-07-21 Dave Hyatt <[email protected]>
+
+ https://bugs.webkit.org/show_bug.cgi?id=64975
+ Elements that have columns (e.g., column-width or column-count non-auto) and elements that have
+ column-spans establish block formatting contexts, and therefore they should not be allowing
+ child margins to collapse with their own margins.
+
+ Reviewed by Beth Dakin.
+
+ Covered by existing tests.
+
+ * rendering/RenderBlock.cpp:
+ (WebCore::RenderBlock::MarginInfo::MarginInfo):
+
2011-07-19 Matthew Delaney <[email protected]>
Add fast path for ImageBuffer::draw
Modified: trunk/Source/WebCore/rendering/RenderBlock.cpp (91496 => 91497)
--- trunk/Source/WebCore/rendering/RenderBlock.cpp 2011-07-21 20:49:38 UTC (rev 91496)
+++ trunk/Source/WebCore/rendering/RenderBlock.cpp 2011-07-21 21:16:02 UTC (rev 91497)
@@ -93,7 +93,8 @@
// we're positioned, floating, a table cell.
m_canCollapseWithChildren = !block->isRenderView() && !block->isRoot() && !block->isPositioned()
&& !block->isFloating() && !block->isTableCell() && !block->hasOverflowClip() && !block->isInlineBlockOrInlineTable()
- && !block->isWritingModeRoot();
+ && !block->isWritingModeRoot() && block->style()->hasAutoColumnCount() && block->style()->hasAutoColumnWidth()
+ && !block->style()->columnSpan();
m_canCollapseMarginBeforeWithChildren = m_canCollapseWithChildren && (beforeBorderPadding == 0) && block->style()->marginBeforeCollapse() != MSEPARATE;
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