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dea3a0922c
Similar to widgets.dart, rendering.dart exports the entire rendering layer. Also, update the examples to use rendering.dart and widgets.dart. Also clean up some exports so that the examples have more sensible imports.
47 lines
1.5 KiB
Dart
47 lines
1.5 KiB
Dart
// Copyright 2015 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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import 'dart:sky' as sky;
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import 'package:sky/base/scheduler.dart' as scheduler;
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import 'package:sky/rendering.dart';
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import 'solid_color_box.dart';
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double timeBase;
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RenderTransform transformBox;
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void main() {
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RenderFlex flexRoot = new RenderFlex(direction: FlexDirection.vertical);
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void addFlexChildSolidColor(RenderFlex parent, sky.Color backgroundColor, { int flex: 0 }) {
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RenderSolidColorBox child = new RenderSolidColorBox(backgroundColor);
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parent.add(child);
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child.parentData.flex = flex;
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}
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addFlexChildSolidColor(flexRoot, const sky.Color(0xFFFF00FF), flex: 1);
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addFlexChildSolidColor(flexRoot, const sky.Color(0xFFFFFF00), flex: 2);
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addFlexChildSolidColor(flexRoot, const sky.Color(0xFF00FFFF), flex: 1);
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transformBox = new RenderTransform(child: flexRoot, transform: new Matrix4.identity());
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RenderPadding root = new RenderPadding(padding: new EdgeDims.all(20.0), child: transformBox);
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new SkyBinding(root: root);
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scheduler.addPersistentFrameCallback(rotate);
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}
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void rotate(double timeStamp) {
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if (timeBase == null)
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timeBase = timeStamp;
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double delta = (timeStamp - timeBase) / 1000; // radians
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transformBox.setIdentity();
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transformBox.translate(transformBox.size.width / 2.0, transformBox.size.height / 2.0);
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transformBox.rotateZ(delta);
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transformBox.translate(-transformBox.size.width / 2.0, -transformBox.size.height / 2.0);
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}
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