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A few minor improvements

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This patch contains a few minor improvements to the framework that I ran
across while working on a new layout model.
This commit is contained in:
Adam Barth 2016-04-23 14:23:31 -07:00
parent 8ac9cc45cc
commit 3ca80d9e35
3 changed files with 22 additions and 4 deletions
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17
packages/flutter/lib/src/rendering/box.dart
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@ -1049,7 +1049,7 @@ abstract class RenderBoxContainerDefaultsMixin<ChildType extends RenderBox, Pare
/// appear in the child list.
double defaultComputeDistanceToFirstActualBaseline(TextBaseline baseline) {
assert(!needsLayout);
RenderBox child = firstChild;
ChildType child = firstChild;
while (child != null) {
final ParentDataType childParentData = child.parentData;
double result = child.getDistanceToActualBaseline(baseline);
@ -1067,7 +1067,7 @@ abstract class RenderBoxContainerDefaultsMixin<ChildType extends RenderBox, Pare
double defaultComputeDistanceToHighestActualBaseline(TextBaseline baseline) {
assert(!needsLayout);
double result;
RenderBox child = firstChild;
ChildType child = firstChild;
while (child != null) {
final ParentDataType childParentData = child.parentData;
double candidate = child.getDistanceToActualBaseline(baseline);
@ -1103,13 +1103,24 @@ abstract class RenderBoxContainerDefaultsMixin<ChildType extends RenderBox, Pare
/// Paints each child by walking the child list forwards.
void defaultPaint(PaintingContext context, Offset offset) {
RenderBox child = firstChild;
ChildType child = firstChild;
while (child != null) {
final ParentDataType childParentData = child.parentData;
context.paintChild(child, childParentData.offset + offset);
child = childParentData.nextSibling;
}
}
List<ChildType> getChildrenAsList() {
List<ChildType> result = <ChildType>[];
RenderBox child = firstChild;
while (child != null) {
final ParentDataType childParentData = child.parentData;
result.add(child);
child = childParentData.nextSibling;
}
return result;
}
}
class FractionalOffsetTween extends Tween<FractionalOffset> {

2
packages/flutter/lib/src/rendering/proxy_box.dart
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@ -1118,7 +1118,7 @@ class RenderTransform extends RenderProxyBox {
/// The alignment of the origin, relative to the size of the box.
///
/// This is equivalent to setting an origin based on the size of the box.
/// If it is specificed at the same time as an offset, both are applied.
/// If it is specified at the same time as an offset, both are applied.
FractionalOffset get alignment => _alignment;
FractionalOffset _alignment;
void set alignment (FractionalOffset newAlignment) {

7
packages/flutter/lib/src/widgets/basic.dart
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@ -2570,6 +2570,13 @@ class RepaintBoundary extends SingleChildRenderObjectWidget {
return new RepaintBoundary(key: key, child: child);
}
static List<RepaintBoundary> wrapAll(List<Widget> widgets) {
List<RepaintBoundary> result = new List<RepaintBoundary>(widgets.length);
for (int i = 0; i < result.length; ++i)
result[i] = new RepaintBoundary.wrap(widgets[i], i);
return result;
}
@override
RenderRepaintBoundary createRenderObject(BuildContext context) => new RenderRepaintBoundary();
}