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/*
* Copyright (C) 2020 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "TableFormattingQuirks.h"
#include "LayoutBox.h"
#include "LayoutContainingBlockChainIterator.h"
#include "LayoutElementBox.h"
#include "LayoutState.h"
#include "RenderStyleInlines.h"
#include "TableFormattingContext.h"
#include "TableGrid.h"
namespace WebCore {
namespace Layout {
TableFormattingQuirks::TableFormattingQuirks(const TableFormattingContext& tableFormattingContext)
: FormattingQuirks(tableFormattingContext)
{
}
bool TableFormattingQuirks::shouldIgnoreChildContentVerticalMargin(const ElementBox& cellBox)
{
// Normally BFC root content height takes the margin box of the child content as vertical margins don't collapse with BFC roots,
// but table cell boxes do collapse their (non-existing) margins with child quirk margins (so much quirk), so here we check
// if the content height should include margins or not.
// e.g <table><tr><td><p>text content</td></tr></table> <- <p>'s quirk margin collapses with the <td> so its content
// height should not include vertical margins.
if (cellBox.establishesInlineFormattingContext())
return false;
if (!cellBox.hasInFlowChild())
return false;
return cellBox.firstInFlowChild()->style().marginBefore().hasQuirk() || cellBox.lastInFlowChild()->style().marginAfter().hasQuirk();
}
LayoutUnit TableFormattingQuirks::heightValueOfNearestContainingBlockWithFixedHeight(const Box& layoutBox) const
{
// The "let's find the nearest ancestor with fixed height to resolve percent height" quirk is limited to the table formatting
// context. If we can't resolve it within the table subtree, we default it to 0.
// e.g <div style="height: 100px"><table><tr><td style="height: 100%"></td></tr></table></div> is resolved to 0px.
for (auto& ancestor : containingBlockChainWithinFormattingContext(layoutBox, formattingContext().root())) {
auto height = ancestor.style().logicalHeight();
if (height.isFixed())
return LayoutUnit { height.value() };
}
return { };
}
}
}
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