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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 "InlineLineBox.h"
#include "InlineLevelBoxInlines.h"
#include "LayoutBoxGeometry.h"
#include "LayoutElementBox.h"
#include "RenderStyleInlines.h"
namespace WebCore {
namespace Layout {
LineBox::LineBox(const Box& rootLayoutBox, InlineLayoutUnit contentLogicalLeft, InlineLayoutUnit contentLogicalWidth, size_t lineIndex, size_t nonSpanningInlineLevelBoxCount)
: m_lineIndex(lineIndex)
, m_rootInlineBox(InlineLevelBox::createRootInlineBox(rootLayoutBox, !lineIndex ? rootLayoutBox.firstLineStyle() : rootLayoutBox.style(), contentLogicalLeft, contentLogicalWidth))
{
m_nonRootInlineLevelBoxList.reserveInitialCapacity(nonSpanningInlineLevelBoxCount);
m_nonRootInlineLevelBoxMap.reserveInitialCapacity(nonSpanningInlineLevelBoxCount);
}
void LineBox::addInlineLevelBox(InlineLevelBox&& inlineLevelBox)
{
m_boxTypes.add(inlineLevelBox.type());
m_nonRootInlineLevelBoxMap.set(&inlineLevelBox.layoutBox(), m_nonRootInlineLevelBoxList.size());
m_nonRootInlineLevelBoxList.append(WTFMove(inlineLevelBox));
}
InlineRect LineBox::logicalRectForTextRun(const Line::Run& run) const
{
ASSERT(run.isText() || run.isSoftLineBreak());
auto* ancestorInlineBox = &parentInlineBox(run);
ASSERT(ancestorInlineBox->isInlineBox());
auto runlogicalTop = ancestorInlineBox->logicalTop() - ancestorInlineBox->inlineBoxContentOffsetForTextBoxTrim();
InlineLayoutUnit logicalHeight = ancestorInlineBox->primarymetricsOfPrimaryFont().height();
while (ancestorInlineBox != &m_rootInlineBox && !ancestorInlineBox->hasLineBoxRelativeAlignment()) {
ancestorInlineBox = &parentInlineBox(*ancestorInlineBox);
ASSERT(ancestorInlineBox->isInlineBox());
runlogicalTop += (ancestorInlineBox->logicalTop() - ancestorInlineBox->inlineBoxContentOffsetForTextBoxTrim());
}
return { runlogicalTop, m_rootInlineBox.logicalLeft() + run.logicalLeft(), run.logicalWidth(), logicalHeight };
}
InlineRect LineBox::logicalRectForLineBreakBox(const Box& layoutBox) const
{
ASSERT(layoutBox.isLineBreakBox());
return logicalRectForInlineLevelBox(layoutBox);
}
InlineLayoutUnit LineBox::inlineLevelBoxAbsoluteTop(const InlineLevelBox& inlineLevelBox) const
{
// Inline level boxes are relative to their parent unless the vertical alignment makes them relative to the line box (e.g. top, bottom).
auto top = inlineLevelBox.logicalTop();
if (inlineLevelBox.isRootInlineBox() || inlineLevelBox.hasLineBoxRelativeAlignment())
return top;
// Fast path for inline level boxes on the root inline box (e.g <div><img></div>).
if (&inlineLevelBox.layoutBox().parent() == &m_rootInlineBox.layoutBox())
return top + m_rootInlineBox.logicalTop();
// Nested inline content e.g <div><span><img></span></div>
auto* ancestorInlineBox = &inlineLevelBox;
while (ancestorInlineBox != &m_rootInlineBox && !ancestorInlineBox->hasLineBoxRelativeAlignment()) {
ancestorInlineBox = &parentInlineBox(*ancestorInlineBox);
ASSERT(ancestorInlineBox->isInlineBox());
top += ancestorInlineBox->logicalTop();
}
return top;
}
InlineRect LineBox::logicalRectForInlineLevelBox(const Box& layoutBox) const
{
ASSERT(layoutBox.isInlineLevelBox() || layoutBox.isLineBreakBox());
auto* inlineBox = inlineLevelBoxFor(layoutBox);
if (!inlineBox) {
ASSERT_NOT_REACHED();
return { };
}
auto inlineBoxLogicalRect = inlineBox->logicalRect();
return InlineRect { inlineLevelBoxAbsoluteTop(*inlineBox), inlineBoxLogicalRect.left(), inlineBoxLogicalRect.width(), inlineBoxLogicalRect.height() };
}
InlineRect LineBox::logicalBorderBoxForAtomicInlineLevelBox(const Box& layoutBox, const BoxGeometry& boxGeometry) const
{
ASSERT(layoutBox.isAtomicInlineLevelBox());
auto logicalRect = logicalRectForInlineLevelBox(layoutBox);
// Inline level boxes use their margin box for vertical alignment. Let's covert them to border boxes.
logicalRect.moveVertically(boxGeometry.marginBefore());
auto verticalMargin = boxGeometry.marginBefore() + boxGeometry.marginAfter();
logicalRect.expandVertically(-verticalMargin);
// FIXME: The overhang adjustment should be based on the computed value.
if (auto* rubyAdjustments = layoutBox.rubyAdjustments())
logicalRect.moveHorizontally(-rubyAdjustments->overhang.start);
return logicalRect;
}
InlineRect LineBox::logicalBorderBoxForInlineBox(const Box& layoutBox, const BoxGeometry& boxGeometry) const
{
auto logicalRect = logicalRectForInlineLevelBox(layoutBox);
// This logical rect is as tall as the "text" content is. Let's adjust with vertical border and padding.
auto verticalBorderAndPadding = boxGeometry.verticalBorder() + boxGeometry.verticalPadding().value_or(0_lu);
logicalRect.expandVertically(verticalBorderAndPadding);
logicalRect.moveVertically(-(boxGeometry.borderBefore() + boxGeometry.paddingBefore().value_or(0_lu)));
return logicalRect;
}
} // namespace Layout
} // namespace WebCore
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