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
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
|
/*******************************************************************************
* Copyright (c) 2000, 2003 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Common Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/cpl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.swt.widgets;
import org.eclipse.swt.*;
import org.eclipse.swt.internal.carbon.*;
import org.eclipse.swt.graphics.RGB;
/**
* Instances of this class allow the user to select a color
* from a predefined set of available colors.
* <dl>
* <dt><b>Styles:</b></dt>
* <dd>(none)</dd>
* <dt><b>Events:</b></dt>
* <dd>(none)</dd>
* </dl>
* <p>
* IMPORTANT: This class is intended to be subclassed <em>only</em>
* within the SWT implementation.
* </p>
*/
public class ColorDialog extends Dialog {
RGB rgb;
/**
* Constructs a new instance of this class given only its parent.
*
* @param parent a composite control which will be the parent of the new instance (cannot be null)
*
* @exception IllegalArgumentException <ul>
* <li>ERROR_NULL_ARGUMENT - if the parent is null</li>
* </ul>
* @exception SWTException <ul>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent</li>
* <li>ERROR_INVALID_SUBCLASS - if this class is not an allowed subclass</li>
* </ul>
*
* @see SWT
* @see Widget#checkSubclass
* @see Widget#getStyle
*/
public ColorDialog(Shell parent) {
this(parent, SWT.APPLICATION_MODAL);
}
/**
* Constructs a new instance of this class given its parent
* and a style value describing its behavior and appearance.
* <p>
* The style value is either one of the style constants defined in
* class <code>SWT</code> which is applicable to instances of this
* class, or must be built by <em>bitwise OR</em>'ing together
* (that is, using the <code>int</code> "|" operator) two or more
* of those <code>SWT</code> style constants. The class description
* lists the style constants that are applicable to the class.
* Style bits are also inherited from superclasses.
* </p>
*
* @param parent a composite control which will be the parent of the new instance (cannot be null)
* @param style the style of control to construct
*
* @exception IllegalArgumentException <ul>
* <li>ERROR_NULL_ARGUMENT - if the parent is null</li>
* </ul>
* @exception SWTException <ul>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent</li>
* <li>ERROR_INVALID_SUBCLASS - if this class is not an allowed subclass</li>
* </ul>
*
* @see SWT
* @see Widget#checkSubclass
* @see Widget#getStyle
*/
public ColorDialog(Shell parent, int style) {
super(parent, style);
checkSubclass ();
}
/**
* Returns the currently selected color in the receiver.
*
* @return the RGB value for the selected color, may be null
*
* @see PaletteData#getRGBs
*/
public RGB getRGB() {
return rgb;
}
/**
* Makes the receiver visible and brings it to the front
* of the display.
*
* @return the selected color, or null if the dialog was
* cancelled, no color was selected, or an error
* occurred
*
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*/
public RGB open() {
ColorPickerInfo info = new ColorPickerInfo ();
if (rgb != null) {
info.red = (short)(rgb.red * 257);
info.green = (short)(rgb.green * 257);
info.blue = (short)(rgb.blue * 257);
} else {
info.red = (short)(255 * 257);
info.green = (short)(255 * 257);
info.blue = (short)(255 * 257);
}
info.flags = OS.kColorPickerDialogIsMoveable | OS.kColorPickerDialogIsModal;
// NEEDS WORK - shouldn't be at mouse location
info.placeWhere = (short)OS.kAtSpecifiedOrigin;
org.eclipse.swt.internal.carbon.Point mp = new org.eclipse.swt.internal.carbon.Point ();
OS.GetGlobalMouse (mp);
info.v = mp.v;
info.h = mp.h;
if (title != null) {
// NEEDS WORK - no title displayed
info.prompt = new byte[256];
int length = title.length();
if (length > 255) length = 255;
info.prompt [0] = (byte)length;
for (int i=0; i<length; i++) {
info.prompt [i+1] = (byte)title.charAt (i);
}
}
rgb = null;
if (OS.PickColor (info) == OS.noErr && info.newColorChosen) {
int red = (info.red >> 8) & 0xFF;
int green = (info.green >> 8) & 0xFF;
int blue = (info.blue >> 8) & 0xFF;
rgb = new RGB(red, green, blue);
}
return rgb;
}
/**
* Sets the receiver's selected color to be the argument.
*
* @param rgb the new RGB value for the selected color, may be
* null to let the platform to select a default when
* open() is called
* @see PaletteData#getRGBs
*/
public void setRGB(RGB rgb) {
this.rgb = rgb;
}
}
|
