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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 '../animation/generators.dart'; | 5 import '../animation/generators.dart'; |
6 import '../animation/mechanics.dart'; | 6 import '../animation/mechanics.dart'; |
7 import '../animation/scroll_behavior.dart'; | 7 import '../animation/scroll_behavior.dart'; |
8 import '../fn.dart'; | 8 import '../fn.dart'; |
9 import '../theme/view-configuration.dart' as config; | 9 import '../theme/view-configuration.dart' as config; |
10 import 'dart:math' as math; | 10 import 'dart:math' as math; |
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21 ScrollBehavior scrollBehavior; | 21 ScrollBehavior scrollBehavior; |
22 double get scrollOffset => _scrollOffset; | 22 double get scrollOffset => _scrollOffset; |
23 | 23 |
24 double _scrollOffset = 0.0; | 24 double _scrollOffset = 0.0; |
25 Simulation _simulation; | 25 Simulation _simulation; |
26 | 26 |
27 Scrollable({Object key, this.scrollBehavior}) : super(key: key) { | 27 Scrollable({Object key, this.scrollBehavior}) : super(key: key) { |
28 onDidUnmount(_stopSimulation); | 28 onDidUnmount(_stopSimulation); |
29 } | 29 } |
30 | 30 |
31 Node buildContent(); | 31 UINode buildContent(); |
32 | 32 |
33 Node build() { | 33 UINode build() { |
34 return new EventTarget( | 34 return new EventListenerNode( |
35 buildContent(), | 35 buildContent(), |
36 onPointerDown: _handlePointerDown, | 36 onPointerDown: _handlePointerDown, |
37 onPointerUp: _handlePointerUpOrCancel, | 37 onPointerUp: _handlePointerUpOrCancel, |
38 onPointerCancel: _handlePointerUpOrCancel, | 38 onPointerCancel: _handlePointerUpOrCancel, |
39 onGestureFlingStart: _handleFlingStart, | 39 onGestureFlingStart: _handleFlingStart, |
40 onGestureFlingCancel: _handleFlingCancel, | 40 onGestureFlingCancel: _handleFlingCancel, |
41 onGestureScrollUpdate: _handleScrollUpdate, | 41 onGestureScrollUpdate: _handleScrollUpdate, |
42 onWheel: _handleWheel | 42 onWheel: _handleWheel |
43 ); | 43 ); |
44 } | 44 } |
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94 } | 94 } |
95 | 95 |
96 void _handleFlingCancel(sky.GestureEvent event) { | 96 void _handleFlingCancel(sky.GestureEvent event) { |
97 _startSimulation(_createParticle()); | 97 _startSimulation(_createParticle()); |
98 } | 98 } |
99 | 99 |
100 void _handleWheel(sky.WheelEvent event) { | 100 void _handleWheel(sky.WheelEvent event) { |
101 scrollBy(-event.offsetY); | 101 scrollBy(-event.offsetY); |
102 } | 102 } |
103 } | 103 } |
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