Mercurial > silverbladetech

comparison Chronosv2/source/DragAndDrop/DragAdorner.cs @ 10:443821e55f06

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Initial cleaned up add from Codeplex files
author stevenh7776 stevenhollidge@hotmail.com
date Tue, 21 Feb 2012 17:25:44 +0700
parents
children
comparison
equal deleted inserted replaced
9:904a9faadf8b 10:443821e55f06
1 using System.Windows;
2 using System.Windows.Documents;
3 using System.Windows.Media;
4 using System.Windows.Shapes;
5
6 namespace Chronos.Presentation.DragAndDrop
7 {
8 public sealed class DragAdorner : Adorner
9 {
10 #region · Fields ·
11
12 private UIElement child;
13 private UIElement owner;
14 private double XCenter;
15 private double YCenter;
16 private double topOffset;
17 private double leftOffset;
18
19 #endregion
20
21 #region · Properties ·
22
23 public double LeftOffset
24 {
25 get { return this.leftOffset; }
26 set
27 {
28 this.leftOffset = (value - this.XCenter);
29 this.UpdatePosition();
30 }
31 }
32
33 public double TopOffset
34 {
35 get { return this.topOffset; }
36 set
37 {
38 this.topOffset = (value - this.YCenter);
39 this.UpdatePosition();
40 }
41 }
42
43 #endregion
44
45 #region · Protected Properties ·
46
47 protected override int VisualChildrenCount
48 {
49 get { return 1; }
50 }
51
52 #endregion
53
54 #region · Constructors ·
55
56 public DragAdorner(UIElement owner)
57 : base(owner)
58 {
59 }
60
61 public DragAdorner(UIElement owner, UIElement adornElement, bool useVisualBrush, double opacity)
62 : base(owner)
63 {
64 this.owner = owner;
65
66 if (useVisualBrush)
67 {
68 VisualBrush brush = new VisualBrush(adornElement);
69 Rectangle rect = new Rectangle();
70
71 brush.Opacity = opacity;
72 rect.RadiusX = 3;
73 rect.RadiusY = 3;
74 rect.Width = adornElement.DesiredSize.Width;
75 rect.Height = adornElement.DesiredSize.Height;
76
77 this.XCenter = adornElement.DesiredSize.Width / 2;
78 this.YCenter = adornElement.DesiredSize.Height / 2;
79
80 rect.Fill = brush;
81
82 this.child = rect;
83 }
84 else
85 {
86 this.child = adornElement;
87 }
88 }
89
90 #endregion
91
92 #region · Methods ·
93
94 public override GeneralTransform GetDesiredTransform(GeneralTransform transform)
95 {
96 GeneralTransformGroup result = new GeneralTransformGroup();
97
98 result.Children.Add(base.GetDesiredTransform(transform));
99 result.Children.Add(new TranslateTransform(this.leftOffset, this.topOffset));
100
101 return result;
102 }
103
104 #endregion
105
106 #region · Protected Methods ·
107
108 protected override Visual GetVisualChild(int index)
109 {
110 return this.child;
111 }
112
113 protected override Size MeasureOverride(Size finalSize)
114 {
115 this.child.Measure(finalSize);
116
117 return this.child.DesiredSize;
118 }
119
120 protected override Size ArrangeOverride(Size finalSize)
121 {
122 this.child.Arrange(new Rect(this.child.DesiredSize));
123
124 return finalSize;
125 }
126
127 #endregion
128
129 #region · Private Methods ·
130
131 private void UpdatePosition()
132 {
133 AdornerLayer adorner = (AdornerLayer)this.Parent;
134
135 if (adorner != null)
136 {
137 adorner.Update(this.AdornedElement);
138 }
139 }
140
141 #endregion
142 }
143 }