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Implement 'stretch' for flexible items.

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Hixie 2015-08-19 13:28:17 -07:00
parent 3784201b9f
commit 2c44ed0f01
1 changed files with 28 additions and 11 deletions
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39
packages/flutter/lib/rendering/flex.dart
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@ -341,17 +341,34 @@ class RenderFlex extends RenderBox with ContainerRenderObjectMixin<RenderBox, Fl
if (flex > 0) {
double spaceForChild = spacePerFlex * flex;
BoxConstraints innerConstraints;
switch (_direction) {
case FlexDirection.horizontal:
innerConstraints = new BoxConstraints(maxHeight: constraints.maxHeight,
minWidth: spaceForChild,
maxWidth: spaceForChild);
break;
case FlexDirection.vertical:
innerConstraints = new BoxConstraints(minHeight: spaceForChild,
maxHeight: spaceForChild,
maxWidth: constraints.maxWidth);
break;
if (alignItems == FlexAlignItems.stretch) {
switch (_direction) {
case FlexDirection.horizontal:
innerConstraints = new BoxConstraints(minWidth: constraints.maxWidth,
maxWidth: constraints.maxWidth,
minHeight: constraints.minHeight,
maxHeight: constraints.maxHeight);
break;
case FlexDirection.vertical:
innerConstraints = new BoxConstraints(minWidth: constraints.minWidth,
maxWidth: constraints.maxWidth,
minHeight: constraints.maxHeight,
maxHeight: constraints.maxHeight);
break;
}
} else {
switch (_direction) {
case FlexDirection.horizontal:
innerConstraints = new BoxConstraints(maxHeight: constraints.maxHeight,
minWidth: spaceForChild,
maxWidth: spaceForChild);
break;
case FlexDirection.vertical:
innerConstraints = new BoxConstraints(minHeight: spaceForChild,
maxHeight: spaceForChild,
maxWidth: constraints.maxWidth);
break;
}
}
child.layout(innerConstraints, parentUsesSize: true);
usedSpace += _getMainSize(child);