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Side by Side Diff: Source/core/rendering/RenderBlockLineLayout.cpp

Issue 138773002: Move LineLayoutState class into rendering/line (Closed) Base URL: svn://svn.chromium.org/blink/trunk
Patch Set: Created 6 years, 11 months ago
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1 /* 1 /*
2 * Copyright (C) 2000 Lars Knoll (knoll@kde.org) 2 * Copyright (C) 2000 Lars Knoll (knoll@kde.org)
3 * Copyright (C) 2003, 2004, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All r ight reserved. 3 * Copyright (C) 2003, 2004, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All r ight reserved.
4 * Copyright (C) 2010 Google Inc. All rights reserved. 4 * Copyright (C) 2010 Google Inc. All rights reserved.
5 * 5 *
6 * This library is free software; you can redistribute it and/or 6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Library General Public 7 * modify it under the terms of the GNU Library General Public
8 * License as published by the Free Software Foundation; either 8 * License as published by the Free Software Foundation; either
9 * version 2 of the License, or (at your option) any later version. 9 * version 2 of the License, or (at your option) any later version.
10 * 10 *
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27 #include "core/rendering/RenderCounter.h" 27 #include "core/rendering/RenderCounter.h"
28 #include "core/rendering/RenderFlowThread.h" 28 #include "core/rendering/RenderFlowThread.h"
29 #include "core/rendering/RenderLayer.h" 29 #include "core/rendering/RenderLayer.h"
30 #include "core/rendering/RenderListMarker.h" 30 #include "core/rendering/RenderListMarker.h"
31 #include "core/rendering/RenderRegion.h" 31 #include "core/rendering/RenderRegion.h"
32 #include "core/rendering/RenderRubyRun.h" 32 #include "core/rendering/RenderRubyRun.h"
33 #include "core/rendering/RenderView.h" 33 #include "core/rendering/RenderView.h"
34 #include "core/rendering/TrailingFloatsRootInlineBox.h" 34 #include "core/rendering/TrailingFloatsRootInlineBox.h"
35 #include "core/rendering/VerticalPositionCache.h" 35 #include "core/rendering/VerticalPositionCache.h"
36 #include "core/rendering/line/BreakingContextInlineHeaders.h" 36 #include "core/rendering/line/BreakingContextInlineHeaders.h"
37 #include "core/rendering/line/LineLayoutState.h"
37 #include "core/rendering/svg/SVGRootInlineBox.h" 38 #include "core/rendering/svg/SVGRootInlineBox.h"
38 #include "platform/text/BidiResolver.h" 39 #include "platform/text/BidiResolver.h"
39 #include "wtf/RefCountedLeakCounter.h" 40 #include "wtf/RefCountedLeakCounter.h"
40 #include "wtf/StdLibExtras.h" 41 #include "wtf/StdLibExtras.h"
41 #include "wtf/Vector.h" 42 #include "wtf/Vector.h"
42 #include "wtf/unicode/CharacterNames.h" 43 #include "wtf/unicode/CharacterNames.h"
43 44
44 namespace WebCore { 45 namespace WebCore {
45 46
46 static IndentTextOrNot requiresIndent(bool isFirstLine, bool isAfterHardLineBrea k, RenderStyle* style) 47 static IndentTextOrNot requiresIndent(bool isFirstLine, bool isAfterHardLineBrea k, RenderStyle* style)
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955 ASSERT(isSVGText()); 956 ASSERT(isSVGText());
956 toSVGRootInlineBox(lineBox)->computePerCharacterLayoutInformation(); 957 toSVGRootInlineBox(lineBox)->computePerCharacterLayoutInformation();
957 } 958 }
958 959
959 // Compute our overflow now. 960 // Compute our overflow now.
960 lineBox->computeOverflow(lineBox->lineTop(), lineBox->lineBottom(), textBoxD ataMap); 961 lineBox->computeOverflow(lineBox->lineTop(), lineBox->lineBottom(), textBoxD ataMap);
961 962
962 return lineBox; 963 return lineBox;
963 } 964 }
964 965
965 // Like LayoutState for layout(), LineLayoutState keeps track of global informat ion
966 // during an entire linebox tree layout pass (aka layoutInlineChildren).
967 class LineLayoutState {
968 public:
969 LineLayoutState(bool fullLayout, LayoutUnit& repaintLogicalTop, LayoutUnit& repaintLogicalBottom, RenderFlowThread* flowThread)
970 : m_lastFloat(0)
971 , m_endLine(0)
972 , m_floatIndex(0)
973 , m_endLineLogicalTop(0)
974 , m_endLineMatched(false)
975 , m_checkForFloatsFromLastLine(false)
976 , m_isFullLayout(fullLayout)
977 , m_repaintLogicalTop(repaintLogicalTop)
978 , m_repaintLogicalBottom(repaintLogicalBottom)
979 , m_adjustedLogicalLineTop(0)
980 , m_usesRepaintBounds(false)
981 , m_flowThread(flowThread)
982 { }
983
984 void markForFullLayout() { m_isFullLayout = true; }
985 bool isFullLayout() const { return m_isFullLayout; }
986
987 bool usesRepaintBounds() const { return m_usesRepaintBounds; }
988
989 void setRepaintRange(LayoutUnit logicalHeight)
990 {
991 m_usesRepaintBounds = true;
992 m_repaintLogicalTop = m_repaintLogicalBottom = logicalHeight;
993 }
994
995 void updateRepaintRangeFromBox(RootInlineBox* box, LayoutUnit paginationDelt a = 0)
996 {
997 m_usesRepaintBounds = true;
998 m_repaintLogicalTop = min(m_repaintLogicalTop, box->logicalTopVisualOver flow() + min<LayoutUnit>(paginationDelta, 0));
999 m_repaintLogicalBottom = max(m_repaintLogicalBottom, box->logicalBottomV isualOverflow() + max<LayoutUnit>(paginationDelta, 0));
1000 }
1001
1002 bool endLineMatched() const { return m_endLineMatched; }
1003 void setEndLineMatched(bool endLineMatched) { m_endLineMatched = endLineMatc hed; }
1004
1005 bool checkForFloatsFromLastLine() const { return m_checkForFloatsFromLastLin e; }
1006 void setCheckForFloatsFromLastLine(bool check) { m_checkForFloatsFromLastLin e = check; }
1007
1008 LineInfo& lineInfo() { return m_lineInfo; }
1009 const LineInfo& lineInfo() const { return m_lineInfo; }
1010
1011 LayoutUnit endLineLogicalTop() const { return m_endLineLogicalTop; }
1012 void setEndLineLogicalTop(LayoutUnit logicalTop) { m_endLineLogicalTop = log icalTop; }
1013
1014 RootInlineBox* endLine() const { return m_endLine; }
1015 void setEndLine(RootInlineBox* line) { m_endLine = line; }
1016
1017 FloatingObject* lastFloat() const { return m_lastFloat; }
1018 void setLastFloat(FloatingObject* lastFloat) { m_lastFloat = lastFloat; }
1019
1020 Vector<RenderBlockFlow::FloatWithRect>& floats() { return m_floats; }
1021
1022 unsigned floatIndex() const { return m_floatIndex; }
1023 void setFloatIndex(unsigned floatIndex) { m_floatIndex = floatIndex; }
1024
1025 LayoutUnit adjustedLogicalLineTop() const { return m_adjustedLogicalLineTop; }
1026 void setAdjustedLogicalLineTop(LayoutUnit value) { m_adjustedLogicalLineTop = value; }
1027
1028 RenderFlowThread* flowThread() const { return m_flowThread; }
1029 void setFlowThread(RenderFlowThread* thread) { m_flowThread = thread; }
1030
1031 private:
1032 Vector<RenderBlockFlow::FloatWithRect> m_floats;
1033 FloatingObject* m_lastFloat;
1034 RootInlineBox* m_endLine;
1035 LineInfo m_lineInfo;
1036 unsigned m_floatIndex;
1037 LayoutUnit m_endLineLogicalTop;
1038 bool m_endLineMatched;
1039 bool m_checkForFloatsFromLastLine;
1040
1041 bool m_isFullLayout;
1042
1043 // FIXME: Should this be a range object instead of two ints?
1044 LayoutUnit& m_repaintLogicalTop;
1045 LayoutUnit& m_repaintLogicalBottom;
1046
1047 LayoutUnit m_adjustedLogicalLineTop;
1048
1049 bool m_usesRepaintBounds;
1050
1051 RenderFlowThread* m_flowThread;
1052 };
1053
1054 static void deleteLineRange(LineLayoutState& layoutState, RootInlineBox* startLi ne, RootInlineBox* stopLine = 0) 966 static void deleteLineRange(LineLayoutState& layoutState, RootInlineBox* startLi ne, RootInlineBox* stopLine = 0)
1055 { 967 {
1056 RootInlineBox* boxToDelete = startLine; 968 RootInlineBox* boxToDelete = startLine;
1057 while (boxToDelete && boxToDelete != stopLine) { 969 while (boxToDelete && boxToDelete != stopLine) {
1058 layoutState.updateRepaintRangeFromBox(boxToDelete); 970 layoutState.updateRepaintRangeFromBox(boxToDelete);
1059 // Note: deleteLineRange(firstRootBox()) is not identical to deleteLineB oxTree(). 971 // Note: deleteLineRange(firstRootBox()) is not identical to deleteLineB oxTree().
1060 // deleteLineBoxTree uses nextLineBox() instead of nextRootBox() when tr aversing. 972 // deleteLineBoxTree uses nextLineBox() instead of nextRootBox() when tr aversing.
1061 RootInlineBox* next = boxToDelete->nextRootBox(); 973 RootInlineBox* next = boxToDelete->nextRootBox();
1062 boxToDelete->deleteLine(); 974 boxToDelete->deleteLine();
1063 boxToDelete = next; 975 boxToDelete = next;
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2333 lineGridBox->alignBoxesInBlockDirection(logicalHeight(), textBoxDataMap, ver ticalPositionCache); 2245 lineGridBox->alignBoxesInBlockDirection(logicalHeight(), textBoxDataMap, ver ticalPositionCache);
2334 2246
2335 setLineGridBox(lineGridBox); 2247 setLineGridBox(lineGridBox);
2336 2248
2337 // FIXME: If any of the characteristics of the box change compared to the ol d one, then we need to do a deep dirtying 2249 // FIXME: If any of the characteristics of the box change compared to the ol d one, then we need to do a deep dirtying
2338 // (similar to what happens when the page height changes). Ideally, though, we only do this if someone is actually snapping 2250 // (similar to what happens when the page height changes). Ideally, though, we only do this if someone is actually snapping
2339 // to this grid. 2251 // to this grid.
2340 } 2252 }
2341 2253
2342 } 2254 }
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