2e2fa94e1b
We need to implement visitChildren for the RenderObjects in the sector demo. Also, add a test. Fixes #790
53 lines
1.3 KiB
Dart
53 lines
1.3 KiB
Dart
import 'package:sky/rendering.dart';
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const Size _kTestViewSize = const Size(800.0, 600.0);
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class TestRenderView extends RenderView {
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TestRenderView({ RenderBox child }) : super(child: child) {
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attach();
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rootConstraints = new ViewConstraints(size: _kTestViewSize);
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scheduleInitialLayout();
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scheduleInitialPaint(new TransformLayer(transform: new Matrix4.identity()));
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}
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}
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enum EnginePhase {
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layout,
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paint,
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composite
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}
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class RenderingTester {
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RenderingTester({ RenderBox root }) {
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renderView = new TestRenderView(child: root);
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}
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RenderView renderView;
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void pumpFrame({ EnginePhase phase: EnginePhase.composite }) {
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RenderObject.flushLayout();
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if (phase == EnginePhase.layout)
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return;
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renderView.updateCompositingBits();
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RenderObject.flushPaint();
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if (phase == EnginePhase.paint)
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return;
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renderView.compositeFrame();
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}
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}
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RenderingTester layout(RenderBox box, { BoxConstraints constraints }) {
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if (constraints != null) {
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box = new RenderPositionedBox(
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child: new RenderConstrainedBox(
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additionalConstraints: constraints,
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child: box
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)
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);
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}
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RenderingTester tester = new RenderingTester(root: box);
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tester.pumpFrame(phase: EnginePhase.layout);
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return tester;
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}
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