/*
* 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 "HitTestResult.h"
#include "InlineFlowBox.h"
#include "PaintInfo.h"
#include "RenderArena.h"
#include "RenderBlock.h"
#include "RootInlineBox.h"
using namespace std;
namespace WebCore {
#ifndef NDEBUG
static bool inInlineBoxDetach;
#endif
#ifndef NDEBUG
InlineBox::~InlineBox()
{
if (!m_hasBadParent && m_parent)
m_parent->setHasBadChildList();
}
#endif
void InlineBox::remove()
{
if (parent())
parent()->removeChild(this);
}
void InlineBox::destroy(RenderArena* renderArena)
{
#ifndef NDEBUG
inInlineBoxDetach = true;
#endif
delete this;
#ifndef NDEBUG
inInlineBoxDetach = false;
#endif
// Recover the size left there for us by operator delete and free the memory.
renderArena->free(*(size_t *)this, this);
}
void* InlineBox::operator new(size_t sz, RenderArena* renderArena) throw()
{
return renderArena->allocate(sz);
}
void InlineBox::operator delete(void* ptr, size_t sz)
{
ASSERT(inInlineBoxDetach);
// Stash size where destroy can find it.
*(size_t *)ptr = sz;
}
#ifndef NDEBUG
void InlineBox::showTreeForThis() const
{
if (m_renderer)
m_renderer->showTreeForThis();
}
#endif
int InlineBox::logicalHeight() const
{
#if ENABLE(SVG)
if (hasVirtualLogicalHeight())
return virtualLogicalHeight();
#endif
if (renderer()->isText())
return m_isText ? renderer()->style(m_firstLine)->fontMetrics().height() : 0;
if (renderer()->isBox() && parent())
return isHorizontal() ? toRenderBox(m_renderer)->height() : toRenderBox(m_renderer)->width();
ASSERT(isInlineFlowBox());
RenderBoxModelObject* flowObject = boxModelObject();
const FontMetrics& fontMetrics = renderer()->style(m_firstLine)->fontMetrics();
int result = fontMetrics.height();
if (parent())
result += flowObject->borderAndPaddingLogicalHeight();
return result;
}
int InlineBox::caretMinOffset() const
{
return m_renderer->caretMinOffset();
}
int InlineBox::caretMaxOffset() const
{
return m_renderer->caretMaxOffset();
}
unsigned InlineBox::caretMaxRenderedOffset() const
{
return 1;
}
void InlineBox::dirtyLineBoxes()
{
markDirty();
for (InlineFlowBox* curr = parent(); curr && !curr->isDirty(); curr = curr->parent())
curr->markDirty();
}
void InlineBox::deleteLine(RenderArena* arena)
{
if (!m_extracted && m_renderer->isBox())
toRenderBox(m_renderer)->setInlineBoxWrapper(0);
destroy(arena);
}
void InlineBox::extractLine()
{
m_extracted = true;
if (m_renderer->isBox())
toRenderBox(m_renderer)->setInlineBoxWrapper(0);
}
void InlineBox::attachLine()
{
m_extracted = false;
if (m_renderer->isBox())
toRenderBox(m_renderer)->setInlineBoxWrapper(this);
}
void InlineBox::adjustPosition(float dx, float dy)
{
m_x += dx;
m_y += dy;
if (m_renderer->isReplaced())
toRenderBox(m_renderer)->move(dx, dy);
}
void InlineBox::paint(PaintInfo& paintInfo, int tx, int ty, int /* lineTop */, int /*lineBottom*/)
{
if (!paintInfo.shouldPaintWithinRoot(renderer()) || (paintInfo.phase != PaintPhaseForeground && paintInfo.phase != PaintPhaseSelection))
return;
IntPoint childPoint = IntPoint(tx, ty);
if (parent()->renderer()->style()->isFlippedBlocksWritingMode()) // Faster than calling containingBlock().
childPoint = renderer()->containingBlock()->flipForWritingMode(toRenderBox(renderer()), childPoint, RenderBox::ParentToChildFlippingAdjustment);
// Paint all phases of replaced elements atomically, as though the replaced element established its
// own stacking context. (See Appendix E.2, section 6.4 on inline block/table elements in the CSS2.1
// specification.)
bool preservePhase = paintInfo.phase == PaintPhaseSelection || paintInfo.phase == PaintPhaseTextClip;
PaintInfo info(paintInfo);
info.phase = preservePhase ? paintInfo.phase : PaintPhaseBlockBackground;
renderer()->paint(info, childPoint.x(), childPoint.y());
if (!preservePhase) {
info.phase = PaintPhaseChildBlockBackgrounds;
renderer()->paint(info, childPoint.x(), childPoint.y());
info.phase = PaintPhaseFloat;
renderer()->paint(info, childPoint.x(), childPoint.y());
info.phase = PaintPhaseForeground;
renderer()->paint(info, childPoint.x(), childPoint.y());
info.phase = PaintPhaseOutline;
renderer()->paint(info, childPoint.x(), childPoint.y());
}
}
bool InlineBox::nodeAtPoint(const HitTestRequest& request, HitTestResult& result, int x, int y, int tx, int ty, int /* lineTop */, int /*lineBottom*/)
{
// Hit test all phases of replaced elements atomically, as though the replaced element established its
// own stacking context. (See Appendix E.2, section 6.4 on inline block/table elements in the CSS2.1
// specification.)
return renderer()->hitTest(request, result, IntPoint(x, y), tx, ty);
}
const RootInlineBox* InlineBox::root() const
{
if (m_parent)
return m_parent->root();
ASSERT(isRootInlineBox());
return static_cast<const RootInlineBox*>(this);
}
RootInlineBox* InlineBox::root()
{
if (m_parent)
return m_parent->root();
ASSERT(isRootInlineBox());
return static_cast<RootInlineBox*>(this);
}
bool InlineBox::nextOnLineExists() const
{
if (!m_determinedIfNextOnLineExists) {
m_determinedIfNextOnLineExists = true;
if (!parent())
m_nextOnLineExists = false;
else if (nextOnLine())
m_nextOnLineExists = true;
else
m_nextOnLineExists = parent()->nextOnLineExists();
}
return m_nextOnLineExists;
}
bool InlineBox::prevOnLineExists() const
{
if (!m_determinedIfPrevOnLineExists) {
m_determinedIfPrevOnLineExists = true;
if (!parent())
m_prevOnLineExists = false;
else if (prevOnLine())
m_prevOnLineExists = true;
else
m_prevOnLineExists = parent()->prevOnLineExists();
}
return m_prevOnLineExists;
}
InlineBox* InlineBox::nextLeafChild() const
{
InlineBox* leaf = 0;
for (InlineBox* box = nextOnLine(); box && !leaf; box = box->nextOnLine())
leaf = box->isLeaf() ? box : static_cast<InlineFlowBox*>(box)->firstLeafChild();
if (!leaf && parent())
leaf = parent()->nextLeafChild();
return leaf;
}
InlineBox* InlineBox::prevLeafChild() const
{
InlineBox* leaf = 0;
for (InlineBox* box = prevOnLine(); box && !leaf; box = box->prevOnLine())
leaf = box->isLeaf() ? box : static_cast<InlineFlowBox*>(box)->lastLeafChild();
if (!leaf && parent())
leaf = parent()->prevLeafChild();
return leaf;
}
RenderObject::SelectionState InlineBox::selectionState()
{
return renderer()->selectionState();
}
bool InlineBox::canAccommodateEllipsis(bool ltr, int blockEdge, int ellipsisWidth)
{
// Non-replaced elements can always accommodate an ellipsis.
if (!m_renderer || !m_renderer->isReplaced())
return true;
IntRect boxRect(m_x, 0, m_logicalWidth, 10);
IntRect ellipsisRect(ltr ? blockEdge - ellipsisWidth : blockEdge, 0, ellipsisWidth, 10);
return !(boxRect.intersects(ellipsisRect));
}
float InlineBox::placeEllipsisBox(bool, float, float, float, bool&)
{
// Use -1 to mean "we didn't set the position."
return -1;
}
void InlineBox::clearKnownToHaveNoOverflow()
{
m_knownToHaveNoOverflow = false;
if (parent() && parent()->knownToHaveNoOverflow())
parent()->clearKnownToHaveNoOverflow();
}
FloatPoint InlineBox::locationIncludingFlipping()
{
if (!renderer()->style()->isFlippedBlocksWritingMode())
return FloatPoint(x(), y());
RenderBlock* block = root()->block();
if (block->style()->isHorizontalWritingMode())
return FloatPoint(x(), block->height() - height() - y());
else
return FloatPoint(block->width() - width() - x(), y());
}
void InlineBox::flipForWritingMode(FloatRect& rect)
{
if (!renderer()->style()->isFlippedBlocksWritingMode())
return;
root()->block()->flipForWritingMode(rect);
}
FloatPoint InlineBox::flipForWritingMode(const FloatPoint& point)
{
if (!renderer()->style()->isFlippedBlocksWritingMode())
return point;
return root()->block()->flipForWritingMode(point);
}
void InlineBox::flipForWritingMode(IntRect& rect)
{
if (!renderer()->style()->isFlippedBlocksWritingMode())
return;
root()->block()->flipForWritingMode(rect);
}
IntPoint InlineBox::flipForWritingMode(const IntPoint& point)
{
if (!renderer()->style()->isFlippedBlocksWritingMode())
return point;
return root()->block()->flipForWritingMode(point);
}
} // namespace WebCore
#ifndef NDEBUG
void showTree(const WebCore::InlineBox* b)
{
if (b)
b->showTreeForThis();
}
#endif