OLD | NEW |
1 // Copyright 2015 The Chromium Authors. All rights reserved. | 1 // Copyright 2015 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 import "dart:math"; | 5 import "dart:math"; |
6 import 'dart:sky'; | 6 import 'dart:sky'; |
7 | 7 |
8 Picture draw(int a, int r, int g, int b) { | 8 Picture draw(int a, int r, int g, int b) { |
9 double width = view.width; | 9 double width = view.width; |
10 double height = view.height; | 10 double height = view.height; |
11 | 11 |
12 PictureRecorder recorder = new PictureRecorder(width, height); | 12 PictureRecorder recorder = new PictureRecorder(); |
| 13 Canvas canvas = recorder.beginRecording(width, height); |
13 double radius = min(width, height) * 0.45; | 14 double radius = min(width, height) * 0.45; |
14 | 15 |
15 Paint paint = new Paint()..color = new Color.fromARGB(a, r, g, b); | 16 Paint paint = new Paint()..color = new Color.fromARGB(a, r, g, b); |
16 recorder.drawCircle(width / 2, height / 2, radius, paint); | 17 canvas.drawCircle(width / 2, height / 2, radius, paint); |
17 return recorder.endRecording(); | 18 return recorder.endRecording(); |
18 } | 19 } |
19 | 20 |
20 bool handleEvent(Event event) { | 21 bool handleEvent(Event event) { |
21 if (event.type == "pointerdown") { | 22 if (event.type == "pointerdown") { |
22 view.picture = draw(255, 0, 0, 255); | 23 view.picture = draw(255, 0, 0, 255); |
23 view.scheduleFrame(); | 24 view.scheduleFrame(); |
24 return true; | 25 return true; |
25 } | 26 } |
26 | 27 |
(...skipping 11 matching lines...) Expand all Loading... |
38 return false; | 39 return false; |
39 } | 40 } |
40 | 41 |
41 void main() { | 42 void main() { |
42 print("Hello, world"); | 43 print("Hello, world"); |
43 view.picture = draw(255, 0, 255, 0); | 44 view.picture = draw(255, 0, 255, 0); |
44 view.scheduleFrame(); | 45 view.scheduleFrame(); |
45 | 46 |
46 view.setEventCallback(handleEvent); | 47 view.setEventCallback(handleEvent); |
47 } | 48 } |
OLD | NEW |