1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
|
/***************** NCore Softwares Pvt. Ltd., India **************************
ColorBox
Copyright (C) 2013 NCore Softwares Pvt. Ltd.
This program is provided to you under the terms of the Microsoft Public
License (Ms-PL) as published at http://ColorBox.codeplex.com/license
***********************************************************************************/
using System;
using System.Windows.Media;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Input;
namespace Tango.BrushPicker
{
class HueSelector : BaseSelector
{
public double Hue
{
get { return (double)GetValue(HueProperty); }
set { SetValue(HueProperty, value); }
}
public static readonly DependencyProperty HueProperty =
DependencyProperty.Register("Hue", typeof(double), typeof(HueSelector),
new FrameworkPropertyMetadata(0.0, new PropertyChangedCallback(HueChanged), new CoerceValueCallback(HueCoerce)));
public static void HueChanged(object o, DependencyPropertyChangedEventArgs e)
{
HueSelector h = (HueSelector)o;
h.SetHueOffset();
h.SetColor();
}
public static object HueCoerce(DependencyObject d, object Brightness)
{
double v = (double)Brightness;
if (v < 0) return 0.0;
if (v > 1) return 1.0;
return v;
}
public double HueOffset
{
get { return (double)GetValue(HueOffsetProperty); }
private set { SetValue(HueOffsetProperty, value); }
}
public static readonly DependencyProperty HueOffsetProperty =
DependencyProperty.Register("HueOffset", typeof(double), typeof(HueSelector), new UIPropertyMetadata(0.0));
protected override void OnMouseMove(MouseEventArgs e)
{
if (e.LeftButton == MouseButtonState.Pressed)
{
Point p = e.GetPosition(this);
if (Orientation == Orientation.Vertical)
{
Hue = 1 - (p.Y / this.ActualHeight);
}
else
{
Hue = 1 - (p.X / this.ActualWidth);
}
}
base.OnMouseMove(e);
}
protected override void OnMouseDown(MouseButtonEventArgs e)
{
if (e.LeftButton == MouseButtonState.Pressed)
{
Point p = e.GetPosition(this);
if (Orientation == Orientation.Vertical)
{
Hue = 1 - (p.Y / this.ActualHeight);
}
else
{
Hue = 1 - (p.X / this.ActualWidth);
}
}
Mouse.Capture(this);
base.OnMouseMove(e);
}
protected override void OnMouseUp(MouseButtonEventArgs e)
{
this.ReleaseMouseCapture();
base.OnMouseUp(e);
}
protected override void OnRender(DrawingContext dc)
{
LinearGradientBrush lb = new LinearGradientBrush();
lb.StartPoint = new Point(0, 0);
if (Orientation == Orientation.Vertical)
lb.EndPoint = new Point(0, 1);
else
lb.EndPoint = new Point(1, 0);
lb.GradientStops.Add(new GradientStop(Color.FromRgb(0xFF, 0x00, 0x00), 1.00));
lb.GradientStops.Add(new GradientStop(Color.FromRgb(0xFF, 0xFF, 0x00), 0.85));
lb.GradientStops.Add(new GradientStop(Color.FromRgb(0x00, 0xFF, 0x00), 0.76));
lb.GradientStops.Add(new GradientStop(Color.FromRgb(0x00, 0xFF, 0xFF), 0.50));
lb.GradientStops.Add(new GradientStop(Color.FromRgb(0x00, 0x00, 0xFF), 0.33));
lb.GradientStops.Add(new GradientStop(Color.FromRgb(0xFF, 0x00, 0xFF), 0.16));
lb.GradientStops.Add(new GradientStop(Color.FromRgb(0xFF, 0x00, 0x00), 0.00));
dc.DrawRectangle(lb, null, new Rect(0, 0, ActualWidth, ActualHeight));
SetHueOffset();
}
protected override Size ArrangeOverride(Size finalSize)
{
SetHueOffset();
return base.ArrangeOverride(finalSize);
}
private void SetHueOffset()
{
double length = ActualHeight;
if (Orientation == Orientation.Horizontal)
length = ActualWidth;
HueOffset = length - (length * Hue);
}
private void SetColor()
{
base.Color = ColorHelper.ColorFromHSB(Hue, 1, 1);
//base.Brush = new SolidColorBrush(Color);
}
}
}
|
