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1 /* | 1 /* |
2 * Copyright (C) 2013 Google Inc. All rights reserved. | 2 * Copyright (C) 2013 Google Inc. All rights reserved. |
3 * | 3 * |
4 * Redistribution and use in source and binary forms, with or without | 4 * Redistribution and use in source and binary forms, with or without |
5 * modification, are permitted provided that the following conditions are | 5 * modification, are permitted provided that the following conditions are |
6 * met: | 6 * met: |
7 * | 7 * |
8 * * Redistributions of source code must retain the above copyright | 8 * * Redistributions of source code must retain the above copyright |
9 * notice, this list of conditions and the following disclaimer. | 9 * notice, this list of conditions and the following disclaimer. |
10 * * Redistributions in binary form must reproduce the above | 10 * * Redistributions in binary form must reproduce the above |
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42 #include "core/layout/LayoutMultiColumnSpannerPlaceholder.h" | 42 #include "core/layout/LayoutMultiColumnSpannerPlaceholder.h" |
43 #include "core/layout/LayoutPagedFlowThread.h" | 43 #include "core/layout/LayoutPagedFlowThread.h" |
44 #include "core/layout/LayoutText.h" | 44 #include "core/layout/LayoutText.h" |
45 #include "core/layout/LayoutView.h" | 45 #include "core/layout/LayoutView.h" |
46 #include "core/layout/TextAutosizer.h" | 46 #include "core/layout/TextAutosizer.h" |
47 #include "core/layout/line/LineBreaker.h" | 47 #include "core/layout/line/LineBreaker.h" |
48 #include "core/layout/line/LineWidth.h" | 48 #include "core/layout/line/LineWidth.h" |
49 #include "core/paint/BlockFlowPainter.h" | 49 #include "core/paint/BlockFlowPainter.h" |
50 #include "core/paint/DeprecatedPaintLayer.h" | 50 #include "core/paint/DeprecatedPaintLayer.h" |
51 #include "core/paint/LayoutObjectDrawingRecorder.h" | 51 #include "core/paint/LayoutObjectDrawingRecorder.h" |
| 52 #include "platform/RuntimeEnabledFeatures.h" |
52 #include "platform/geometry/TransformState.h" | 53 #include "platform/geometry/TransformState.h" |
53 #include "platform/graphics/paint/ClipRecorderStack.h" | 54 #include "platform/graphics/paint/ClipRecorderStack.h" |
54 #include "platform/text/BidiTextRun.h" | 55 #include "platform/text/BidiTextRun.h" |
55 | 56 |
56 namespace blink { | 57 namespace blink { |
57 | 58 |
58 bool LayoutBlockFlow::s_canPropagateFloatIntoSibling = false; | 59 bool LayoutBlockFlow::s_canPropagateFloatIntoSibling = false; |
59 | 60 |
60 struct SameSizeAsMarginInfo { | 61 struct SameSizeAsMarginInfo { |
61 uint16_t bitfields; | 62 uint16_t bitfields; |
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3063 // Paged overflow is currently done using the multicol implementation. | 3064 // Paged overflow is currently done using the multicol implementation. |
3064 return LayoutPagedFlowThread::createAnonymous(document(), styleRef()); | 3065 return LayoutPagedFlowThread::createAnonymous(document(), styleRef()); |
3065 default: | 3066 default: |
3066 ASSERT_NOT_REACHED(); | 3067 ASSERT_NOT_REACHED(); |
3067 return nullptr; | 3068 return nullptr; |
3068 } | 3069 } |
3069 } | 3070 } |
3070 | 3071 |
3071 void LayoutBlockFlow::createOrDestroyMultiColumnFlowThreadIfNeeded(const LayoutS
tyle* oldStyle) | 3072 void LayoutBlockFlow::createOrDestroyMultiColumnFlowThreadIfNeeded(const LayoutS
tyle* oldStyle) |
3072 { | 3073 { |
3073 if (!document().regionBasedColumnsEnabled()) | 3074 if (!RuntimeEnabledFeatures::regionBasedColumnsEnabled()) |
3074 return; | 3075 return; |
3075 | 3076 |
3076 // Paged overflow trumps multicol in this implementation. Ideally, it should
be possible to have | 3077 // Paged overflow trumps multicol in this implementation. Ideally, it should
be possible to have |
3077 // both paged overflow and multicol on the same element, but then we need tw
o flow | 3078 // both paged overflow and multicol on the same element, but then we need tw
o flow |
3078 // threads. Anyway, this is nothing to worry about until we can actually nes
t multicol properly | 3079 // threads. Anyway, this is nothing to worry about until we can actually nes
t multicol properly |
3079 // inside other fragmentation contexts. | 3080 // inside other fragmentation contexts. |
3080 FlowThreadType type = flowThreadType(styleRef()); | 3081 FlowThreadType type = flowThreadType(styleRef()); |
3081 | 3082 |
3082 if (multiColumnFlowThread()) { | 3083 if (multiColumnFlowThread()) { |
3083 ASSERT(oldStyle); | 3084 ASSERT(oldStyle); |
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3155 } | 3156 } |
3156 if (isAnonymous()) | 3157 if (isAnonymous()) |
3157 return "LayoutBlockFlow (anonymous)"; | 3158 return "LayoutBlockFlow (anonymous)"; |
3158 if (isRelPositioned()) | 3159 if (isRelPositioned()) |
3159 return "LayoutBlockFlow (relative positioned)"; | 3160 return "LayoutBlockFlow (relative positioned)"; |
3160 return "LayoutBlockFlow"; | 3161 return "LayoutBlockFlow"; |
3161 } | 3162 } |
3162 | 3163 |
3163 | 3164 |
3164 } // namespace blink | 3165 } // namespace blink |
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