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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 'dart:math' as math; | 5 import 'dart:math' as math; |
6 | 6 |
7 import 'box.dart'; | 7 import 'box.dart'; |
8 import 'object.dart'; | 8 import 'object.dart'; |
9 | 9 |
10 class BlockParentData extends BoxParentData with ContainerParentDataMixin<Render
Box> { } | 10 class BlockParentData extends BoxParentData with ContainerParentDataMixin<Render
Box> { } |
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21 addAll(children); | 21 addAll(children); |
22 } | 22 } |
23 | 23 |
24 void setParentData(RenderBox child) { | 24 void setParentData(RenderBox child) { |
25 if (child.parentData is! BlockParentData) | 25 if (child.parentData is! BlockParentData) |
26 child.parentData = new BlockParentData(); | 26 child.parentData = new BlockParentData(); |
27 } | 27 } |
28 | 28 |
29 double getMinIntrinsicWidth(BoxConstraints constraints) { | 29 double getMinIntrinsicWidth(BoxConstraints constraints) { |
30 double width = 0.0; | 30 double width = 0.0; |
31 BoxConstraints innerConstraints = new BoxConstraints( | 31 BoxConstraints innerConstraints = constraints.widthConstraints(); |
32 minWidth: constraints.minWidth, maxWidth: constraints.maxWidth); | |
33 RenderBox child = firstChild; | 32 RenderBox child = firstChild; |
34 while (child != null) { | 33 while (child != null) { |
35 width = math.max(width, child.getMinIntrinsicWidth(innerConstraints)); | 34 width = math.max(width, child.getMinIntrinsicWidth(innerConstraints)); |
| 35 assert(child.parentData is BlockParentData); |
36 child = child.parentData.nextSibling; | 36 child = child.parentData.nextSibling; |
37 } | 37 } |
38 return width; | 38 return width; |
39 } | 39 } |
40 | 40 |
41 double getMaxIntrinsicWidth(BoxConstraints constraints) { | 41 double getMaxIntrinsicWidth(BoxConstraints constraints) { |
42 double width = 0.0; | 42 double width = 0.0; |
43 BoxConstraints innerConstraints = new BoxConstraints( | 43 BoxConstraints innerConstraints = constraints.widthConstraints(); |
44 minWidth: constraints.minWidth, maxWidth: constraints.maxWidth); | |
45 RenderBox child = firstChild; | 44 RenderBox child = firstChild; |
46 while (child != null) { | 45 while (child != null) { |
47 width = math.max(width, child.getMaxIntrinsicWidth(innerConstraints)); | 46 width = math.max(width, child.getMaxIntrinsicWidth(innerConstraints)); |
| 47 assert(child.parentData is BlockParentData); |
48 child = child.parentData.nextSibling; | 48 child = child.parentData.nextSibling; |
49 } | 49 } |
50 return width; | 50 return width; |
51 } | 51 } |
52 | 52 |
53 BoxConstraints _getInnerConstraintsForWidth(double width) { | 53 BoxConstraints _getInnerConstraintsForWidth(double width) { |
54 return new BoxConstraints(minWidth: width, maxWidth: width); | 54 return new BoxConstraints(minWidth: width, maxWidth: width); |
55 } | 55 } |
56 | 56 |
57 double _getIntrinsicHeight(BoxConstraints constraints) { | 57 double _getIntrinsicHeight(BoxConstraints constraints) { |
58 double height = 0.0; | 58 double height = 0.0; |
59 double width = constraints.constrainWidth(constraints.maxWidth); | 59 double width = constraints.constrainWidth(constraints.maxWidth); |
60 BoxConstraints innerConstraints = _getInnerConstraintsForWidth(width); | 60 BoxConstraints innerConstraints = _getInnerConstraintsForWidth(width); |
61 RenderBox child = firstChild; | 61 RenderBox child = firstChild; |
62 while (child != null) { | 62 while (child != null) { |
63 double childHeight = child.getMinIntrinsicHeight(innerConstraints); | 63 double childHeight = child.getMinIntrinsicHeight(innerConstraints); |
64 assert(childHeight == child.getMaxIntrinsicHeight(innerConstraints)); | 64 assert(childHeight == child.getMaxIntrinsicHeight(innerConstraints)); |
65 height += childHeight; | 65 height += childHeight; |
| 66 assert(child.parentData is BlockParentData); |
66 child = child.parentData.nextSibling; | 67 child = child.parentData.nextSibling; |
67 } | 68 } |
68 return height; | 69 return height; |
69 } | 70 } |
70 | 71 |
71 double getMinIntrinsicHeight(BoxConstraints constraints) { | 72 double getMinIntrinsicHeight(BoxConstraints constraints) { |
72 return _getIntrinsicHeight(constraints); | 73 return _getIntrinsicHeight(constraints); |
73 } | 74 } |
74 | 75 |
75 double getMaxIntrinsicHeight(BoxConstraints constraints) { | 76 double getMaxIntrinsicHeight(BoxConstraints constraints) { |
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102 void hitTestChildren(HitTestResult result, { Point position }) { | 103 void hitTestChildren(HitTestResult result, { Point position }) { |
103 defaultHitTestChildren(result, position: position); | 104 defaultHitTestChildren(result, position: position); |
104 } | 105 } |
105 | 106 |
106 void paint(RenderCanvas canvas) { | 107 void paint(RenderCanvas canvas) { |
107 defaultPaint(canvas); | 108 defaultPaint(canvas); |
108 } | 109 } |
109 | 110 |
110 } | 111 } |
111 | 112 |
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