| /* |
| * 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) 2014 Adobe Systems Incorporated. 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. |
| * |
| */ |
| |
| #ifndef LineLayoutState_h |
| #define LineLayoutState_h |
| |
| #include "core/rendering/RenderBlockFlow.h" |
| #include "platform/geometry/LayoutRect.h" |
| |
| namespace blink { |
| |
| // 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_lastFloat(0) |
| , m_endLine(0) |
| , m_floatIndex(0) |
| , m_endLineLogicalTop(0) |
| , m_endLineMatched(false) |
| , m_checkForFloatsFromLastLine(false) |
| , m_hasInlineChild(false) |
| , m_isFullLayout(fullLayout) |
| , m_repaintLogicalTop(repaintLogicalTop) |
| , m_repaintLogicalBottom(repaintLogicalBottom) |
| , m_adjustedLogicalLineTop(0) |
| , m_usesRepaintBounds(false) |
| , m_flowThread(flowThread) |
| { } |
| |
| 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)); |
| } |
| |
| 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; } |
| |
| bool hasInlineChild() const { return m_hasInlineChild; } |
| void setHasInlineChild(bool hasInlineChild) { m_hasInlineChild = hasInlineChild; } |
| |
| 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<RenderBlockFlow::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; } |
| |
| private: |
| Vector<RenderBlockFlow::FloatWithRect> m_floats; |
| FloatingObject* m_lastFloat; |
| RootInlineBox* m_endLine; |
| LineInfo m_lineInfo; |
| unsigned m_floatIndex; |
| LayoutUnit m_endLineLogicalTop; |
| bool m_endLineMatched; |
| bool m_checkForFloatsFromLastLine; |
| // Used as a performance optimization to avoid doing a full repaint when our floats |
| // change but we don't have any inline children. |
| bool m_hasInlineChild; |
| |
| bool m_isFullLayout; |
| |
| // FIXME: Should this be a range object instead of two ints? |
| LayoutUnit& m_repaintLogicalTop; |
| LayoutUnit& m_repaintLogicalBottom; |
| |
| LayoutUnit m_adjustedLogicalLineTop; |
| |
| bool m_usesRepaintBounds; |
| |
| RenderFlowThread* m_flowThread; |
| }; |
| |
| } |
| |
| #endif // LineLayoutState_h |