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
|
//
// ColorPickerBackend.cs
//
// Author:
// Vsevolod Kukol <sevo@sevo.org>
//
// Copyright (c) 2014 Vsevolod Kukol
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
using System;
using Xwt.Backends;
using Cairo;
namespace Xwt.GtkBackend
{
public class ColorPickerBackend: WidgetBackend, IColorPickerBackend
{
public ColorPickerBackend ()
{
}
public override void Initialize ()
{
Widget = new Gtk.ColorButton ();
base.Widget.Show ();
}
protected new Gtk.ColorButton Widget {
get { return (Gtk.ColorButton)base.Widget; }
set { base.Widget = value; }
}
protected new IColorPickerEventSink EventSink {
get { return (IColorPickerEventSink)base.EventSink; }
}
public Xwt.Drawing.Color Color {
get {
var xwtColor = Widget.Color.ToXwtValue ();
return xwtColor.WithAlpha ((double)Widget.Alpha / (double)ushort.MaxValue);
}
set {
Widget.Color = value.ToGtkValue ();
Widget.Alpha = (ushort)((int)(value.Alpha * 255) << 8 | (int)(value.Alpha * 255));
}
}
public bool SupportsAlpha {
get {
return Widget.UseAlpha;
}
set {
Widget.UseAlpha = value;
}
}
public string Title {
get {
return Widget.Title;
}
set {
Widget.Title = value;
}
}
public void SetButtonStyle (ButtonStyle style)
{
switch (style) {
case ButtonStyle.Normal:
Widget.Relief = Gtk.ReliefStyle.Normal;
break;
case ButtonStyle.Flat:
Widget.Relief = Gtk.ReliefStyle.None;
break;
case ButtonStyle.Borderless:
Widget.Relief = Gtk.ReliefStyle.None;
break;
}
}
public override void EnableEvent (object eventId)
{
base.EnableEvent (eventId);
if (eventId is ColorPickerEvent) {
switch ((ColorPickerEvent)eventId) {
case ColorPickerEvent.ColorChanged: Widget.ColorSet += HandleColorSet; break;
}
}
}
public override void DisableEvent (object eventId)
{
base.DisableEvent (eventId);
if (eventId is ColorPickerEvent) {
switch ((ColorPickerEvent)eventId) {
case ColorPickerEvent.ColorChanged: Widget.ColorSet -= HandleColorSet; break;
}
}
}
void HandleColorSet (object sender, EventArgs e)
{
ApplicationContext.InvokeUserCode (EventSink.OnColorChanged);
}
}
}
|
