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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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1063 return isHorizontalFlow() && child.style()->height().isAuto(); | 1063 return isHorizontalFlow() && child.style()->height().isAuto(); |
1064 } | 1064 } |
1065 | 1065 |
1066 void LayoutFlexibleBox::layoutAndPlaceChildren(LayoutUnit& crossAxisOffset, cons
t OrderedFlexItemList& children, const Vector<LayoutUnit, 16>& childSizes, Layou
tUnit availableFreeSpace, bool relayoutChildren, Vector<LineContext>& lineContex
ts) | 1066 void LayoutFlexibleBox::layoutAndPlaceChildren(LayoutUnit& crossAxisOffset, cons
t OrderedFlexItemList& children, const Vector<LayoutUnit, 16>& childSizes, Layou
tUnit availableFreeSpace, bool relayoutChildren, Vector<LineContext>& lineContex
ts) |
1067 { | 1067 { |
1068 ASSERT(childSizes.size() == children.size()); | 1068 ASSERT(childSizes.size() == children.size()); |
1069 | 1069 |
1070 size_t numberOfChildrenForJustifyContent = numberOfInFlowPositionedChildren(
children); | 1070 size_t numberOfChildrenForJustifyContent = numberOfInFlowPositionedChildren(
children); |
1071 LayoutUnit autoMarginOffset = autoMarginOffsetInMainAxis(children, available
FreeSpace); | 1071 LayoutUnit autoMarginOffset = autoMarginOffsetInMainAxis(children, available
FreeSpace); |
1072 LayoutUnit mainAxisOffset = flowAwareBorderStart() + flowAwarePaddingStart()
; | 1072 LayoutUnit mainAxisOffset = flowAwareBorderStart() + flowAwarePaddingStart()
; |
1073 mainAxisOffset += initialJustifyContentOffset(availableFreeSpace, style()->j
ustifyContent(), style()->justifyContentDistribution(), numberOfChildrenForJusti
fyContent); | 1073 mainAxisOffset += initialJustifyContentOffset(availableFreeSpace, style()->j
ustifyContentPosition(), style()->justifyContentDistribution(), numberOfChildren
ForJustifyContent); |
1074 if (style()->flexDirection() == FlowRowReverse) | 1074 if (style()->flexDirection() == FlowRowReverse) |
1075 mainAxisOffset += isHorizontalFlow() ? verticalScrollbarWidth() : horizo
ntalScrollbarHeight(); | 1075 mainAxisOffset += isHorizontalFlow() ? verticalScrollbarWidth() : horizo
ntalScrollbarHeight(); |
1076 | 1076 |
1077 LayoutUnit totalMainExtent = mainAxisExtent(); | 1077 LayoutUnit totalMainExtent = mainAxisExtent(); |
1078 LayoutUnit maxAscent = 0, maxDescent = 0; // Used when align-items: baseline
. | 1078 LayoutUnit maxAscent = 0, maxDescent = 0; // Used when align-items: baseline
. |
1079 LayoutUnit maxChildCrossAxisExtent = 0; | 1079 LayoutUnit maxChildCrossAxisExtent = 0; |
1080 size_t seenInFlowPositionedChildren = 0; | 1080 size_t seenInFlowPositionedChildren = 0; |
1081 bool shouldFlipMainAxis = !isColumnFlow() && !isLeftToRightFlow(); | 1081 bool shouldFlipMainAxis = !isColumnFlow() && !isLeftToRightFlow(); |
1082 for (size_t i = 0; i < children.size(); ++i) { | 1082 for (size_t i = 0; i < children.size(); ++i) { |
1083 LayoutBox* child = children[i]; | 1083 LayoutBox* child = children[i]; |
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1154 crossAxisOffset += maxChildCrossAxisExtent; | 1154 crossAxisOffset += maxChildCrossAxisExtent; |
1155 } | 1155 } |
1156 | 1156 |
1157 void LayoutFlexibleBox::layoutColumnReverse(const OrderedFlexItemList& children,
LayoutUnit crossAxisOffset, LayoutUnit availableFreeSpace) | 1157 void LayoutFlexibleBox::layoutColumnReverse(const OrderedFlexItemList& children,
LayoutUnit crossAxisOffset, LayoutUnit availableFreeSpace) |
1158 { | 1158 { |
1159 // This is similar to the logic in layoutAndPlaceChildren, except we place t
he children | 1159 // This is similar to the logic in layoutAndPlaceChildren, except we place t
he children |
1160 // starting from the end of the flexbox. We also don't need to layout anythi
ng since we're | 1160 // starting from the end of the flexbox. We also don't need to layout anythi
ng since we're |
1161 // just moving the children to a new position. | 1161 // just moving the children to a new position. |
1162 size_t numberOfChildrenForJustifyContent = numberOfInFlowPositionedChildren(
children); | 1162 size_t numberOfChildrenForJustifyContent = numberOfInFlowPositionedChildren(
children); |
1163 LayoutUnit mainAxisOffset = logicalHeight() - flowAwareBorderEnd() - flowAwa
rePaddingEnd(); | 1163 LayoutUnit mainAxisOffset = logicalHeight() - flowAwareBorderEnd() - flowAwa
rePaddingEnd(); |
1164 mainAxisOffset -= initialJustifyContentOffset(availableFreeSpace, style()->j
ustifyContent(), style()->justifyContentDistribution(), numberOfChildrenForJusti
fyContent); | 1164 mainAxisOffset -= initialJustifyContentOffset(availableFreeSpace, style()->j
ustifyContentPosition(), style()->justifyContentDistribution(), numberOfChildren
ForJustifyContent); |
1165 mainAxisOffset -= isHorizontalFlow() ? verticalScrollbarWidth() : horizontal
ScrollbarHeight(); | 1165 mainAxisOffset -= isHorizontalFlow() ? verticalScrollbarWidth() : horizontal
ScrollbarHeight(); |
1166 | 1166 |
1167 size_t seenInFlowPositionedChildren = 0; | 1167 size_t seenInFlowPositionedChildren = 0; |
1168 for (size_t i = 0; i < children.size(); ++i) { | 1168 for (size_t i = 0; i < children.size(); ++i) { |
1169 LayoutBox* child = children[i]; | 1169 LayoutBox* child = children[i]; |
1170 | 1170 |
1171 if (child->isOutOfFlowPositioned()) { | 1171 if (child->isOutOfFlowPositioned()) { |
1172 child->layer()->setStaticBlockPosition(mainAxisOffset); | 1172 child->layer()->setStaticBlockPosition(mainAxisOffset); |
1173 continue; | 1173 continue; |
1174 } | 1174 } |
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1223 } | 1223 } |
1224 | 1224 |
1225 if (style()->alignContent() == ContentPositionFlexStart) | 1225 if (style()->alignContent() == ContentPositionFlexStart) |
1226 return; | 1226 return; |
1227 | 1227 |
1228 LayoutUnit availableCrossAxisSpace = crossAxisContentExtent(); | 1228 LayoutUnit availableCrossAxisSpace = crossAxisContentExtent(); |
1229 for (size_t i = 0; i < lineContexts.size(); ++i) | 1229 for (size_t i = 0; i < lineContexts.size(); ++i) |
1230 availableCrossAxisSpace -= lineContexts[i].crossAxisExtent; | 1230 availableCrossAxisSpace -= lineContexts[i].crossAxisExtent; |
1231 | 1231 |
1232 LayoutBox* child = m_orderIterator.first(); | 1232 LayoutBox* child = m_orderIterator.first(); |
1233 LayoutUnit lineOffset = initialAlignContentOffset(availableCrossAxisSpace, s
tyle()->alignContent(), style()->alignContentDistribution(), lineContexts.size()
); | 1233 LayoutUnit lineOffset = initialAlignContentOffset(availableCrossAxisSpace, s
tyle()->alignContentPosition(), style()->alignContentDistribution(), lineContext
s.size()); |
1234 for (unsigned lineNumber = 0; lineNumber < lineContexts.size(); ++lineNumber
) { | 1234 for (unsigned lineNumber = 0; lineNumber < lineContexts.size(); ++lineNumber
) { |
1235 lineContexts[lineNumber].crossAxisOffset += lineOffset; | 1235 lineContexts[lineNumber].crossAxisOffset += lineOffset; |
1236 for (size_t childNumber = 0; childNumber < lineContexts[lineNumber].numb
erOfChildren; ++childNumber, child = m_orderIterator.next()) | 1236 for (size_t childNumber = 0; childNumber < lineContexts[lineNumber].numb
erOfChildren; ++childNumber, child = m_orderIterator.next()) |
1237 adjustAlignmentForChild(*child, lineOffset); | 1237 adjustAlignmentForChild(*child, lineOffset); |
1238 | 1238 |
1239 if (style()->alignContentDistribution() == ContentDistributionStretch &&
availableCrossAxisSpace > 0) | 1239 if (style()->alignContentDistribution() == ContentDistributionStretch &&
availableCrossAxisSpace > 0) |
1240 lineContexts[lineNumber].crossAxisExtent += availableCrossAxisSpace
/ static_cast<unsigned>(lineContexts.size()); | 1240 lineContexts[lineNumber].crossAxisExtent += availableCrossAxisSpace
/ static_cast<unsigned>(lineContexts.size()); |
1241 | 1241 |
1242 lineOffset += alignContentSpaceBetweenChildren(availableCrossAxisSpace,
style()->alignContentDistribution(), lineContexts.size()); | 1242 lineOffset += alignContentSpaceBetweenChildren(availableCrossAxisSpace,
style()->alignContentDistribution(), lineContexts.size()); |
1243 } | 1243 } |
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1406 ASSERT(child); | 1406 ASSERT(child); |
1407 LayoutUnit lineCrossAxisExtent = lineContexts[lineNumber].crossAxisE
xtent; | 1407 LayoutUnit lineCrossAxisExtent = lineContexts[lineNumber].crossAxisE
xtent; |
1408 LayoutUnit originalOffset = lineContexts[lineNumber].crossAxisOffset
- crossAxisStartEdge; | 1408 LayoutUnit originalOffset = lineContexts[lineNumber].crossAxisOffset
- crossAxisStartEdge; |
1409 LayoutUnit newOffset = contentExtent - originalOffset - lineCrossAxi
sExtent; | 1409 LayoutUnit newOffset = contentExtent - originalOffset - lineCrossAxi
sExtent; |
1410 adjustAlignmentForChild(*child, newOffset - originalOffset); | 1410 adjustAlignmentForChild(*child, newOffset - originalOffset); |
1411 } | 1411 } |
1412 } | 1412 } |
1413 } | 1413 } |
1414 | 1414 |
1415 } | 1415 } |
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