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| 1 /* | 1 /* |
| 2 * Copyright (C) 2011 Google Inc. All rights reserved. | 2 * Copyright (C) 2011 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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| 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| 28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | 28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 29 */ | 29 */ |
| 30 | 30 |
| 31 #include "config.h" | 31 #include "config.h" |
| 32 #include "core/layout/LayoutFlexibleBox.h" | 32 #include "core/layout/LayoutFlexibleBox.h" |
| 33 | 33 |
| 34 #include "core/frame/UseCounter.h" | 34 #include "core/frame/UseCounter.h" |
| 35 #include "core/layout/LayoutView.h" | 35 #include "core/layout/LayoutView.h" |
| 36 #include "core/layout/TextAutosizer.h" | 36 #include "core/layout/TextAutosizer.h" |
| 37 #include "core/layout/style/LayoutStyle.h" | 37 #include "core/layout/style/ComputedStyle.h" |
| 38 #include "core/paint/BlockPainter.h" | 38 #include "core/paint/BlockPainter.h" |
| 39 #include "core/paint/DeprecatedPaintLayer.h" | 39 #include "core/paint/DeprecatedPaintLayer.h" |
| 40 #include "platform/LengthFunctions.h" | 40 #include "platform/LengthFunctions.h" |
| 41 #include "wtf/MathExtras.h" | 41 #include "wtf/MathExtras.h" |
| 42 #include <limits> | 42 #include <limits> |
| 43 | 43 |
| 44 namespace blink { | 44 namespace blink { |
| 45 | 45 |
| 46 struct LayoutFlexibleBox::LineContext { | 46 struct LayoutFlexibleBox::LineContext { |
| 47 LineContext(LayoutUnit crossAxisOffset, LayoutUnit crossAxisExtent, size_t n
umberOfChildren, LayoutUnit maxAscent) | 47 LineContext(LayoutUnit crossAxisOffset, LayoutUnit crossAxisExtent, size_t n
umberOfChildren, LayoutUnit maxAscent) |
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| 192 int marginAscent = direction == HorizontalLine ? marginTop() : marginRight()
; | 192 int marginAscent = direction == HorizontalLine ? marginTop() : marginRight()
; |
| 193 return synthesizedBaselineFromContentBox(*this, direction) + marginAscent; | 193 return synthesizedBaselineFromContentBox(*this, direction) + marginAscent; |
| 194 } | 194 } |
| 195 | 195 |
| 196 void LayoutFlexibleBox::removeChild(LayoutObject* child) | 196 void LayoutFlexibleBox::removeChild(LayoutObject* child) |
| 197 { | 197 { |
| 198 LayoutBlock::removeChild(child); | 198 LayoutBlock::removeChild(child); |
| 199 m_intrinsicSizeAlongMainAxis.remove(child); | 199 m_intrinsicSizeAlongMainAxis.remove(child); |
| 200 } | 200 } |
| 201 | 201 |
| 202 void LayoutFlexibleBox::styleDidChange(StyleDifference diff, const LayoutStyle*
oldStyle) | 202 void LayoutFlexibleBox::styleDidChange(StyleDifference diff, const ComputedStyle
* oldStyle) |
| 203 { | 203 { |
| 204 LayoutBlock::styleDidChange(diff, oldStyle); | 204 LayoutBlock::styleDidChange(diff, oldStyle); |
| 205 | 205 |
| 206 if (oldStyle && oldStyle->alignItems() == ItemPositionStretch && diff.needsF
ullLayout()) { | 206 if (oldStyle && oldStyle->alignItems() == ItemPositionStretch && diff.needsF
ullLayout()) { |
| 207 // Flex items that were previously stretching need to be relayed out so
we can compute new available cross axis space. | 207 // Flex items that were previously stretching need to be relayed out so
we can compute new available cross axis space. |
| 208 // This is only necessary for stretching since other alignment values do
n't change the size of the box. | 208 // This is only necessary for stretching since other alignment values do
n't change the size of the box. |
| 209 for (LayoutBox* child = firstChildBox(); child; child = child->nextSibli
ngBox()) { | 209 for (LayoutBox* child = firstChildBox(); child; child = child->nextSibli
ngBox()) { |
| 210 ItemPosition previousAlignment = LayoutStyle::resolveAlignment(*oldS
tyle, child->styleRef(), ItemPositionStretch); | 210 ItemPosition previousAlignment = ComputedStyle::resolveAlignment(*ol
dStyle, child->styleRef(), ItemPositionStretch); |
| 211 if (previousAlignment == ItemPositionStretch && previousAlignment !=
LayoutStyle::resolveAlignment(styleRef(), child->styleRef(), ItemPositionStretc
h)) | 211 if (previousAlignment == ItemPositionStretch && previousAlignment !=
ComputedStyle::resolveAlignment(styleRef(), child->styleRef(), ItemPositionStre
tch)) |
| 212 child->setChildNeedsLayout(MarkOnlyThis); | 212 child->setChildNeedsLayout(MarkOnlyThis); |
| 213 } | 213 } |
| 214 } | 214 } |
| 215 } | 215 } |
| 216 | 216 |
| 217 void LayoutFlexibleBox::layoutBlock(bool relayoutChildren) | 217 void LayoutFlexibleBox::layoutBlock(bool relayoutChildren) |
| 218 { | 218 { |
| 219 ASSERT(needsLayout()); | 219 ASSERT(needsLayout()); |
| 220 | 220 |
| 221 if (!relayoutChildren && simplifiedLayout()) | 221 if (!relayoutChildren && simplifiedLayout()) |
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| 993 LayoutUnit staticBlockPosition = isColumnFlow() ? mainAxisOffset : crossAxis
Offset; | 993 LayoutUnit staticBlockPosition = isColumnFlow() ? mainAxisOffset : crossAxis
Offset; |
| 994 if (childLayer->staticBlockPosition() != staticBlockPosition) { | 994 if (childLayer->staticBlockPosition() != staticBlockPosition) { |
| 995 childLayer->setStaticBlockPosition(staticBlockPosition); | 995 childLayer->setStaticBlockPosition(staticBlockPosition); |
| 996 if (child.style()->hasStaticBlockPosition(style()->isHorizontalWritingMo
de())) | 996 if (child.style()->hasStaticBlockPosition(style()->isHorizontalWritingMo
de())) |
| 997 child.setChildNeedsLayout(MarkOnlyThis); | 997 child.setChildNeedsLayout(MarkOnlyThis); |
| 998 } | 998 } |
| 999 } | 999 } |
| 1000 | 1000 |
| 1001 ItemPosition LayoutFlexibleBox::alignmentForChild(LayoutBox& child) const | 1001 ItemPosition LayoutFlexibleBox::alignmentForChild(LayoutBox& child) const |
| 1002 { | 1002 { |
| 1003 ItemPosition align = LayoutStyle::resolveAlignment(styleRef(), child.styleRe
f(), ItemPositionStretch); | 1003 ItemPosition align = ComputedStyle::resolveAlignment(styleRef(), child.style
Ref(), ItemPositionStretch); |
| 1004 | 1004 |
| 1005 if (align == ItemPositionBaseline && hasOrthogonalFlow(child)) | 1005 if (align == ItemPositionBaseline && hasOrthogonalFlow(child)) |
| 1006 align = ItemPositionFlexStart; | 1006 align = ItemPositionFlexStart; |
| 1007 | 1007 |
| 1008 if (style()->flexWrap() == FlexWrapReverse) { | 1008 if (style()->flexWrap() == FlexWrapReverse) { |
| 1009 if (align == ItemPositionFlexStart) | 1009 if (align == ItemPositionFlexStart) |
| 1010 align = ItemPositionFlexEnd; | 1010 align = ItemPositionFlexEnd; |
| 1011 else if (align == ItemPositionFlexEnd) | 1011 else if (align == ItemPositionFlexEnd) |
| 1012 align = ItemPositionFlexStart; | 1012 align = ItemPositionFlexStart; |
| 1013 } | 1013 } |
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| 1395 ASSERT(child); | 1395 ASSERT(child); |
| 1396 LayoutUnit lineCrossAxisExtent = lineContexts[lineNumber].crossAxisE
xtent; | 1396 LayoutUnit lineCrossAxisExtent = lineContexts[lineNumber].crossAxisE
xtent; |
| 1397 LayoutUnit originalOffset = lineContexts[lineNumber].crossAxisOffset
- crossAxisStartEdge; | 1397 LayoutUnit originalOffset = lineContexts[lineNumber].crossAxisOffset
- crossAxisStartEdge; |
| 1398 LayoutUnit newOffset = contentExtent - originalOffset - lineCrossAxi
sExtent; | 1398 LayoutUnit newOffset = contentExtent - originalOffset - lineCrossAxi
sExtent; |
| 1399 adjustAlignmentForChild(*child, newOffset - originalOffset); | 1399 adjustAlignmentForChild(*child, newOffset - originalOffset); |
| 1400 } | 1400 } |
| 1401 } | 1401 } |
| 1402 } | 1402 } |
| 1403 | 1403 |
| 1404 } | 1404 } |
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