sky/examples/rendering/interactive_flex.dart - Issue 1218593002: Move sky/examples to sky/sdk/lib/example, and code changes to support that change. Fixes T277.

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Issue 1218593002: Move sky/examples to sky/sdk/lib/example, and code changes to support that change. Fixes T277. (Closed) Base URL: git@github.com:domokit/mojo.git@master

Patch Set: Created 5 years, 6 months ago

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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

3 // found in the LICENSE file.

4

5 import 'dart:sky';

6 import 'dart:math' as math;

7

8 import 'package:sky/mojo/net/image_cache.dart' as image_cache;

9 import 'package:sky/painting/text_style.dart';

10 import 'package:sky/rendering/block.dart';

11 import 'package:sky/rendering/box.dart';

12 import 'package:sky/rendering/flex.dart';

13 import 'package:sky/rendering/object.dart';

14 import 'package:sky/rendering/paragraph.dart';

15 import 'package:sky/rendering/sky_binding.dart';

16

17 import '../lib/solid_color_box.dart';

18

19 class Touch {

20 final double x;

21 final double y;

22 const Touch(this.x, this.y);

23 }

24

25 class RenderImageGrow extends RenderImage {

26 final Size _startingSize;

27

28 RenderImageGrow(String src, Size size) : _startingSize = size, super(src, size );

29

30 double _growth = 0.0;

31 double get growth => _growth;

32 void set growth(double value) {

33 _growth = value;

34 double newWidth = _startingSize.width == null ? null : _startingSize.width + growth;

35 double newHeight = _startingSize.height == null ? null : _startingSize.heigh t + growth;

36 requestedSize = new Size(newWidth, newHeight);

37 }

38 }

39

40 RenderImageGrow image;

41

42 Map<int, Touch> touches = new Map();

43 void handleEvent(event) {

44 if (event is PointerEvent) {

45 if (event.type == 'pointermove')

46 image.growth = math.max(0.0, image.growth + event.x - touches[event.poin ter].x);

47 touches[event.pointer] = new Touch(event.x, event.y);

48 }

49 }

50

51 void main() {

52 void addFlexChildSolidColor(RenderFlex parent, Color backgroundColor, { int fl ex: 0 }) {

53 RenderSolidColorBox child = new RenderSolidColorBox(backgroundColor);

54 parent.add(child);

55 child.parentData.flex = flex;

56 }

57

58 var row = new RenderFlex(direction: FlexDirection.horizontal);

59

60 // Left cell

61 addFlexChildSolidColor(row, const Color(0xFF00D2B8), flex: 1);

62

63 // Resizeable image

64 image = new RenderImageGrow("https://www.dartlang.org/logos/dart-logo.png",

65 new Size(100.0, null));

66 var padding = new RenderPadding(padding: const EdgeDims.all(10.0), child: imag e);

67 row.add(padding);

68

69 RenderFlex column = new RenderFlex(direction: FlexDirection.vertical);

70

71 // Top cell

72 addFlexChildSolidColor(column, const Color(0xFF55DDCA), flex: 1);

73

74 // The internet is a beautiful place. https://baconipsum.com/

75 String meatyString = """Bacon ipsum dolor amet ham fatback tri-tip, prosciutto

76 porchetta bacon kevin meatball meatloaf pig beef ribs chicken. Brisket ribeye

77 andouille leberkas capicola meatloaf. Chicken pig ball tip pork picanha bresaola

78 alcatra. Pork pork belly alcatra, flank chuck drumstick biltong doner jowl.

79 Pancetta meatball tongue tenderloin rump tail jowl boudin.""";

80 var text = new InlineStyle(

81 new TextStyle(color: const Color(0xFF009900)),

82 [new InlineText(meatyString)]);

83 padding = new RenderPadding(

84 padding: const EdgeDims.all(10.0),

85 child: new RenderParagraph(text));

86 column.add(padding);

87

88 // Bottom cell

89 addFlexChildSolidColor(column, const Color(0xFF0081C6), flex: 2);

90

91 row.add(column);

92 column.parentData.flex = 8;

93

94 RenderDecoratedBox root = new RenderDecoratedBox(

95 decoration: new BoxDecoration(backgroundColor: const Color(0xFFFFFFFF)),

96 child: row

97 );

98

99 new SkyBinding(root: root);

100 view.setEventCallback(handleEvent);

101 }

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