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/*
* Copyright (C) 2000 Lars Knoll (knoll@kde.org)
* Copyright (C) 2003, 2004, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All right reserved.
* Copyright (C) 2010 Google Inc. All rights reserved.
* Copyright (C) 2013 ChangSeok Oh <shivamidow@gmail.com>
* Copyright (C) 2013 Adobe Systems Incorporated. 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 THE COPYRIGHT HOLDERS AND 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 THE
* COPYRIGHT HOLDER OR 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.
*/
#ifndef LineLayoutState_h
#define LineLayoutState_h
#include "LayoutRect.h"
#include "RenderBox.h"
namespace WebCore {
struct FloatWithRect {
FloatWithRect(RenderBox& f)
: object(f)
, rect(LayoutRect(f.x() - f.marginLeft(), f.y() - f.marginTop(), f.width() + f.horizontalMarginExtent(), f.height() + f.verticalMarginExtent()))
, everHadLayout(f.everHadLayout())
{
}
RenderBox& object;
LayoutRect rect;
bool everHadLayout;
};
// Like LayoutState for layout(), LineLayoutState keeps track of global information
// during an entire linebox tree layout pass (aka layoutInlineChildren).
class LineLayoutState {
public:
LineLayoutState(bool fullLayout, LayoutUnit& repaintLogicalTop, LayoutUnit& repaintLogicalBottom, RenderFlowThread* flowThread)
: m_endLineLogicalTop(0)
, m_endLine(0)
, m_lastFloat(0)
, m_floatIndex(0)
, m_adjustedLogicalLineTop(0)
, m_flowThread(flowThread)
, m_repaintLogicalTop(repaintLogicalTop)
, m_repaintLogicalBottom(repaintLogicalBottom)
, m_endLineMatched(false)
, m_checkForFloatsFromLastLine(false)
, m_isFullLayout(fullLayout)
, m_usesRepaintBounds(false)
{
}
LineInfo& lineInfo() { return m_lineInfo; }
const LineInfo& lineInfo() const { return m_lineInfo; }
LayoutUnit endLineLogicalTop() const { return m_endLineLogicalTop; }
void setEndLineLogicalTop(LayoutUnit logicalTop) { m_endLineLogicalTop = logicalTop; }
RootInlineBox* endLine() const { return m_endLine; }
void setEndLine(RootInlineBox* line) { m_endLine = line; }
FloatingObject* lastFloat() const { return m_lastFloat; }
void setLastFloat(FloatingObject* lastFloat) { m_lastFloat = lastFloat; }
Vector<FloatWithRect>& floats() { return m_floats; }
unsigned floatIndex() const { return m_floatIndex; }
void setFloatIndex(unsigned floatIndex) { m_floatIndex = floatIndex; }
LayoutUnit adjustedLogicalLineTop() const { return m_adjustedLogicalLineTop; }
void setAdjustedLogicalLineTop(LayoutUnit value) { m_adjustedLogicalLineTop = value; }
RenderFlowThread* flowThread() const { return m_flowThread; }
void setFlowThread(RenderFlowThread* thread) { m_flowThread = thread; }
bool endLineMatched() const { return m_endLineMatched; }
void setEndLineMatched(bool endLineMatched) { m_endLineMatched = endLineMatched; }
bool checkForFloatsFromLastLine() const { return m_checkForFloatsFromLastLine; }
void setCheckForFloatsFromLastLine(bool check) { m_checkForFloatsFromLastLine = check; }
void markForFullLayout() { m_isFullLayout = true; }
bool isFullLayout() const { return m_isFullLayout; }
bool usesRepaintBounds() const { return m_usesRepaintBounds; }
void setRepaintRange(LayoutUnit logicalHeight)
{
m_usesRepaintBounds = true;
m_repaintLogicalTop = m_repaintLogicalBottom = logicalHeight;
}
void updateRepaintRangeFromBox(RootInlineBox* box, LayoutUnit paginationDelta = 0)
{
m_usesRepaintBounds = true;
m_repaintLogicalTop = std::min(m_repaintLogicalTop, box->logicalTopVisualOverflow() + std::min<LayoutUnit>(paginationDelta, 0));
m_repaintLogicalBottom = std::max(m_repaintLogicalBottom, box->logicalBottomVisualOverflow() + std::max<LayoutUnit>(paginationDelta, 0));
}
private:
LineInfo m_lineInfo;
LayoutUnit m_endLineLogicalTop;
RootInlineBox* m_endLine;
FloatingObject* m_lastFloat;
Vector<FloatWithRect> m_floats;
unsigned m_floatIndex;
LayoutUnit m_adjustedLogicalLineTop;
RenderFlowThread* m_flowThread;
// FIXME: Should this be a range object instead of two ints?
LayoutUnit& m_repaintLogicalTop;
LayoutUnit& m_repaintLogicalBottom;
bool m_endLineMatched : 1;
bool m_checkForFloatsFromLastLine : 1;
bool m_isFullLayout : 1;
bool m_usesRepaintBounds : 1;
};
}
#endif // LineLayoutState_h
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