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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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23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | 23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | 24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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 "core/layout/LayoutFlexibleBox.h" | 31 #include "core/layout/LayoutFlexibleBox.h" |
32 | 32 |
| 33 #include <limits> |
33 #include "core/frame/UseCounter.h" | 34 #include "core/frame/UseCounter.h" |
34 #include "core/layout/FlexibleBoxAlgorithm.h" | 35 #include "core/layout/FlexibleBoxAlgorithm.h" |
35 #include "core/layout/LayoutState.h" | 36 #include "core/layout/LayoutState.h" |
36 #include "core/layout/LayoutView.h" | 37 #include "core/layout/LayoutView.h" |
37 #include "core/layout/TextAutosizer.h" | 38 #include "core/layout/TextAutosizer.h" |
38 #include "core/paint/BlockPainter.h" | 39 #include "core/paint/BlockPainter.h" |
39 #include "core/paint/PaintLayer.h" | 40 #include "core/paint/PaintLayer.h" |
40 #include "core/style/ComputedStyle.h" | 41 #include "core/style/ComputedStyle.h" |
41 #include "platform/LengthFunctions.h" | 42 #include "platform/LengthFunctions.h" |
42 #include "wtf/AutoReset.h" | 43 #include "wtf/AutoReset.h" |
43 #include "wtf/MathExtras.h" | 44 #include "wtf/MathExtras.h" |
44 #include <limits> | |
45 | 45 |
46 namespace blink { | 46 namespace blink { |
47 | 47 |
48 static bool hasAspectRatio(const LayoutBox& child) { | 48 static bool hasAspectRatio(const LayoutBox& child) { |
49 return child.isImage() || child.isCanvas() || child.isVideo(); | 49 return child.isImage() || child.isCanvas() || child.isVideo(); |
50 } | 50 } |
51 | 51 |
52 struct LayoutFlexibleBox::LineContext { | 52 struct LayoutFlexibleBox::LineContext { |
53 LineContext(LayoutUnit crossAxisOffset, | 53 LineContext(LayoutUnit crossAxisOffset, |
54 LayoutUnit crossAxisExtent, | 54 LayoutUnit crossAxisExtent, |
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934 Vector<LineContext> lineContexts; | 934 Vector<LineContext> lineContexts; |
935 LayoutUnit sumFlexBaseSize; | 935 LayoutUnit sumFlexBaseSize; |
936 double totalFlexGrow; | 936 double totalFlexGrow; |
937 double totalFlexShrink; | 937 double totalFlexShrink; |
938 double totalWeightedFlexShrink; | 938 double totalWeightedFlexShrink; |
939 LayoutUnit sumHypotheticalMainSize; | 939 LayoutUnit sumHypotheticalMainSize; |
940 | 940 |
941 PaintLayerScrollableArea::PreventRelayoutScope preventRelayoutScope( | 941 PaintLayerScrollableArea::PreventRelayoutScope preventRelayoutScope( |
942 layoutScope); | 942 layoutScope); |
943 | 943 |
944 | |
945 // Set up our master list of flex items. All of the rest of the algorithm | 944 // Set up our master list of flex items. All of the rest of the algorithm |
946 // should work off this list of a subset. | 945 // should work off this list of a subset. |
947 // TODO(cbiesinger): That second part is not yet true. | 946 // TODO(cbiesinger): That second part is not yet true. |
948 ChildLayoutType layoutType = relayoutChildren ? ForceLayout : LayoutIfNeeded; | 947 ChildLayoutType layoutType = relayoutChildren ? ForceLayout : LayoutIfNeeded; |
949 Vector<FlexItem> allItems; | 948 Vector<FlexItem> allItems; |
950 m_orderIterator.first(); | 949 m_orderIterator.first(); |
951 for (LayoutBox* child = m_orderIterator.currentChild(); child; | 950 for (LayoutBox* child = m_orderIterator.currentChild(); child; |
952 child = m_orderIterator.next()) { | 951 child = m_orderIterator.next()) { |
953 | |
954 if (child->isOutOfFlowPositioned()) { | 952 if (child->isOutOfFlowPositioned()) { |
955 // Out-of-flow children are not flex items, so we skip them here. | 953 // Out-of-flow children are not flex items, so we skip them here. |
956 prepareChildForPositionedLayout(*child); | 954 prepareChildForPositionedLayout(*child); |
957 continue; | 955 continue; |
958 } | 956 } |
959 | 957 |
960 allItems.push_back(constructFlexItem(*child, layoutType)); | 958 allItems.push_back(constructFlexItem(*child, layoutType)); |
961 } | 959 } |
962 | 960 |
963 const LayoutUnit lineBreakLength = mainAxisContentExtent(LayoutUnit::max()); | 961 const LayoutUnit lineBreakLength = mainAxisContentExtent(LayoutUnit::max()); |
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2166 LayoutUnit originalOffset = | 2164 LayoutUnit originalOffset = |
2167 lineContexts[lineNumber].crossAxisOffset - crossAxisStartEdge; | 2165 lineContexts[lineNumber].crossAxisOffset - crossAxisStartEdge; |
2168 LayoutUnit newOffset = | 2166 LayoutUnit newOffset = |
2169 contentExtent - originalOffset - lineCrossAxisExtent; | 2167 contentExtent - originalOffset - lineCrossAxisExtent; |
2170 adjustAlignmentForChild(*flexItem.box, newOffset - originalOffset); | 2168 adjustAlignmentForChild(*flexItem.box, newOffset - originalOffset); |
2171 } | 2169 } |
2172 } | 2170 } |
2173 } | 2171 } |
2174 | 2172 |
2175 } // namespace blink | 2173 } // namespace blink |
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