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/*
* Copyright (C) 2003, 2004, 2005, 2006, 2007 Apple Inc. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#include "config.h"
#include "InlineBox.h"
#include "FontMetrics.h"
#include "Frame.h"
#include "HitTestResult.h"
#include "InlineFlowBox.h"
#include "RenderBlockFlow.h"
#include "RenderLineBreak.h"
#include "RootInlineBox.h"
#include <wtf/IsoMallocInlines.h>
#include <wtf/text/TextStream.h>
#if ENABLE(TREE_DEBUGGING)
#include <stdio.h>
#endif
namespace WebCore {
WTF_MAKE_ISO_ALLOCATED_IMPL(InlineBox);
struct SameSizeAsInlineBox {
virtual ~SameSizeAsInlineBox() = default;
void* a[4];
FloatPoint b;
float c[2];
unsigned d : 23;
#if !ASSERT_WITH_SECURITY_IMPLICATION_DISABLED
unsigned s;
bool f;
bool i;
#endif
};
COMPILE_ASSERT(sizeof(InlineBox) == sizeof(SameSizeAsInlineBox), InlineBox_size_guard);
#if !ASSERT_WITH_SECURITY_IMPLICATION_DISABLED
void InlineBox::assertNotDeleted() const
{
ASSERT(m_deletionSentinel == deletionSentinelNotDeletedValue);
}
InlineBox::~InlineBox()
{
invalidateParentChildList();
m_deletionSentinel = deletionSentinelDeletedValue;
}
void InlineBox::setHasBadParent()
{
assertNotDeleted();
m_hasBadParent = true;
}
void InlineBox::invalidateParentChildList()
{
assertNotDeleted();
if (!m_hasBadParent && m_parent && m_isEverInChildList)
m_parent->setHasBadChildList();
}
#endif
void InlineBox::removeFromParent()
{
if (parent())
parent()->removeChild(this);
}
#if ENABLE(TREE_DEBUGGING)
const char* InlineBox::boxName() const
{
return "InlineBox";
}
void InlineBox::showNodeTreeForThis() const
{
m_renderer.showNodeTreeForThis();
}
void InlineBox::showLineTreeForThis() const
{
m_renderer.containingBlock()->showLineTreeForThis();
}
void InlineBox::outputLineTreeAndMark(TextStream& stream, const InlineBox* markedBox, int depth) const
{
outputLineBox(stream, markedBox == this, depth);
}
void InlineBox::outputLineBox(TextStream& stream, bool mark, int depth) const
{
stream << "-------- " << (isDirty() ? "D" : "-") << "-";
int printedCharacters = 0;
if (mark) {
stream << "*";
++printedCharacters;
}
while (++printedCharacters <= depth * 2)
stream << " ";
stream << boxName() << " " << FloatRect(x(), y(), width(), height()) << " (" << this << ") renderer->(" << &renderer() << ")";
stream.nextLine();
}
#endif // ENABLE(TREE_DEBUGGING)
float InlineBox::logicalHeight() const
{
if (hasVirtualLogicalHeight())
return virtualLogicalHeight();
const RenderStyle& lineStyle = this->lineStyle();
if (renderer().isTextOrLineBreak())
return lineStyle.fontMetrics().height();
if (is<RenderBox>(renderer()) && parent())
return isHorizontal() ? downcast<RenderBox>(renderer()).height() : downcast<RenderBox>(renderer()).width();
ASSERT(isInlineFlowBox());
RenderBoxModelObject* flowObject = boxModelObject();
const FontMetrics& fontMetrics = lineStyle.fontMetrics();
float result = fontMetrics.height();
if (parent())
result += flowObject->borderAndPaddingLogicalHeight();
return result;
}
int InlineBox::baselinePosition(FontBaseline baselineType) const
{
return boxModelObject()->baselinePosition(baselineType, m_bitfields.firstLine(), isHorizontal() ? HorizontalLine : VerticalLine, PositionOnContainingLine);
}
LayoutUnit InlineBox::lineHeight() const
{
return boxModelObject()->lineHeight(m_bitfields.firstLine(), isHorizontal() ? HorizontalLine : VerticalLine, PositionOnContainingLine);
}
int InlineBox::caretMinOffset() const
{
return m_renderer.caretMinOffset();
}
int InlineBox::caretMaxOffset() const
{
return m_renderer.caretMaxOffset();
}
void InlineBox::dirtyLineBoxes()
{
markDirty();
for (InlineFlowBox* curr = parent(); curr && !curr->isDirty(); curr = curr->parent())
curr->markDirty();
}
void InlineBox::adjustPosition(float dx, float dy)
{
m_topLeft.move(dx, dy);
if (m_renderer.isOutOfFlowPositioned())
return;
if (m_renderer.isReplaced())
downcast<RenderBox>(renderer()).move(LayoutUnit(dx), LayoutUnit(dy));
}
const RootInlineBox& InlineBox::root() const
{
if (parent())
return parent()->root();
return downcast<RootInlineBox>(*this);
}
RootInlineBox& InlineBox::root()
{
if (parent())
return parent()->root();
return downcast<RootInlineBox>(*this);
}
bool InlineBox::nextOnLineExists() const
{
if (!m_bitfields.determinedIfNextOnLineExists()) {
m_bitfields.setDeterminedIfNextOnLineExists(true);
if (!parent())
m_bitfields.setNextOnLineExists(false);
else if (nextOnLine())
m_bitfields.setNextOnLineExists(true);
else
m_bitfields.setNextOnLineExists(parent()->nextOnLineExists());
}
return m_bitfields.nextOnLineExists();
}
bool InlineBox::previousOnLineExists() const
{
if (!parent())
return false;
if (previousOnLine())
return true;
return parent()->previousOnLineExists();
}
InlineBox* InlineBox::nextLeafOnLine() const
{
InlineBox* leaf = nullptr;
for (InlineBox* box = nextOnLine(); box && !leaf; box = box->nextOnLine())
leaf = box->isLeaf() ? box : downcast<InlineFlowBox>(*box).firstLeafDescendant();
if (!leaf && parent())
leaf = parent()->nextLeafOnLine();
return leaf;
}
InlineBox* InlineBox::previousLeafOnLine() const
{
InlineBox* leaf = nullptr;
for (InlineBox* box = previousOnLine(); box && !leaf; box = box->previousOnLine())
leaf = box->isLeaf() ? box : downcast<InlineFlowBox>(*box).lastLeafDescendant();
if (!leaf && parent())
leaf = parent()->previousLeafOnLine();
return leaf;
}
InlineBox* InlineBox::nextLeafOnLineIgnoringLineBreak() const
{
InlineBox* leaf = nextLeafOnLine();
if (leaf && leaf->isLineBreak())
return nullptr;
return leaf;
}
InlineBox* InlineBox::previousLeafOnLineIgnoringLineBreak() const
{
InlineBox* leaf = previousLeafOnLine();
if (leaf && leaf->isLineBreak())
return nullptr;
return leaf;
}
RenderObject::SelectionState InlineBox::selectionState()
{
return m_renderer.selectionState();
}
bool InlineBox::canAccommodateEllipsis(bool ltr, int blockEdge, int ellipsisWidth) const
{
// Non-replaced elements can always accommodate an ellipsis.
if (!m_renderer.isReplaced())
return true;
IntRect boxRect(left(), 0, m_logicalWidth, 10);
IntRect ellipsisRect(ltr ? blockEdge - ellipsisWidth : blockEdge, 0, ellipsisWidth, 10);
return !(boxRect.intersects(ellipsisRect));
}
float InlineBox::placeEllipsisBox(bool, float, float, float, float& truncatedWidth, bool&)
{
// Use -1 to mean "we didn't set the position."
truncatedWidth += logicalWidth();
return -1;
}
void InlineBox::clearKnownToHaveNoOverflow()
{
m_bitfields.setKnownToHaveNoOverflow(false);
if (parent() && parent()->knownToHaveNoOverflow())
parent()->clearKnownToHaveNoOverflow();
}
FloatPoint InlineBox::locationIncludingFlipping() const
{
if (!m_renderer.style().isFlippedBlocksWritingMode())
return topLeft();
RenderBlockFlow& block = root().blockFlow();
if (block.style().isHorizontalWritingMode())
return { x(), block.height() - height() - y() };
return { block.width() - width() - x(), y() };
}
void InlineBox::flipForWritingMode(FloatRect& rect) const
{
if (!m_renderer.style().isFlippedBlocksWritingMode())
return;
root().blockFlow().flipForWritingMode(rect);
}
FloatPoint InlineBox::flipForWritingMode(const FloatPoint& point) const
{
if (!m_renderer.style().isFlippedBlocksWritingMode())
return point;
return root().blockFlow().flipForWritingMode(point);
}
void InlineBox::flipForWritingMode(LayoutRect& rect) const
{
if (!m_renderer.style().isFlippedBlocksWritingMode())
return;
root().blockFlow().flipForWritingMode(rect);
}
LayoutPoint InlineBox::flipForWritingMode(const LayoutPoint& point) const
{
if (!m_renderer.style().isFlippedBlocksWritingMode())
return point;
return root().blockFlow().flipForWritingMode(point);
}
} // namespace WebCore
#if ENABLE(TREE_DEBUGGING)
void showNodeTree(const WebCore::InlineBox* inlineBox)
{
if (!inlineBox)
return;
inlineBox->showNodeTreeForThis();
}
void showLineTree(const WebCore::InlineBox* inlineBox)
{
if (!inlineBox)
return;
inlineBox->showLineTreeForThis();
}
#endif