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comparison org.eclipse.swt.win32.win32.x86/src/org/eclipse/swt/widgets/ColorDialog.d @ 0:6dd524f61e62

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add dwt win and basic java stuff
author Frank Benoit <benoit@tionex.de>
date Mon, 02 Mar 2009 14:44:16 +0100
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1 /*******************************************************************************
2 * Copyright (c) 2000, 2008 IBM Corporation and others.
3 * All rights reserved. This program and the accompanying materials
4 * are made available under the terms of the Eclipse Public License v1.0
5 * which accompanies this distribution, and is available at
6 * http://www.eclipse.org/legal/epl-v10.html
7 *
8 * Contributors:
9 * IBM Corporation - initial API and implementation
10 * Port to the D programming language:
11 * Frank Benoit <benoit@tionex.de>
12 *******************************************************************************/
13 module org.eclipse.swt.widgets.ColorDialog;
14
15
16
17 import org.eclipse.swt.SWT;
18 import org.eclipse.swt.SWTException;
19 import org.eclipse.swt.graphics.PaletteData;
20 import org.eclipse.swt.graphics.RGB;
21 import org.eclipse.swt.internal.win32.OS;
22
23
24 import org.eclipse.swt.widgets.Dialog;
25 import org.eclipse.swt.widgets.Shell;
26 import org.eclipse.swt.widgets.Display;
27
28
29 /**
30 * Instances of this class allow the user to select a color
31 * from a predefined set of available colors.
32 * <dl>
33 * <dt><b>Styles:</b></dt>
34 * <dd>(none)</dd>
35 * <dt><b>Events:</b></dt>
36 * <dd>(none)</dd>
37 * </dl>
38 * <p>
39 * IMPORTANT: This class is intended to be subclassed <em>only</em>
40 * within the SWT implementation.
41 * </p>
42 *
43 * @see <a href="http://www.eclipse.org/swt/examples.php">SWT Example: ControlExample, Dialog tab</a>
44 * @see <a href="http://www.eclipse.org/swt/">Sample code and further information</a>
45 */
46
47 public class ColorDialog : Dialog {
48 Display display;
49 int width, height;
50 RGB rgb;
51 private static ColorDialog sThis;
52
53 /**
54 * Constructs a new instance of this class given only its parent.
55 *
56 * @param parent a composite control which will be the parent of the new instance
57 *
58 * @exception IllegalArgumentException <ul>
59 * <li>ERROR_NULL_ARGUMENT - if the parent is null</li>
60 * </ul>
61 * @exception SWTException <ul>
62 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent</li>
63 * <li>ERROR_INVALID_SUBCLASS - if this class is not an allowed subclass</li>
64 * </ul>
65 *
66 * @see SWT
67 * @see Widget#checkSubclass
68 * @see Widget#getStyle
69 */
70 public this (Shell parent) {
71 this (parent, SWT.APPLICATION_MODAL);
72 }
73
74 /**
75 * Constructs a new instance of this class given its parent
76 * and a style value describing its behavior and appearance.
77 * <p>
78 * The style value is either one of the style constants defined in
79 * class <code>SWT</code> which is applicable to instances of this
80 * class, or must be built by <em>bitwise OR</em>'ing together
81 * (that is, using the <code>int</code> "|" operator) two or more
82 * of those <code>SWT</code> style constants. The class description
83 * lists the style constants that are applicable to the class.
84 * Style bits are also inherited from superclasses.
85 * </p>
86 *
87 * @param parent a composite control which will be the parent of the new instance (cannot be null)
88 * @param style the style of control to construct
89 *
90 * @exception IllegalArgumentException <ul>
91 * <li>ERROR_NULL_ARGUMENT - if the parent is null</li>
92 * </ul>
93 * @exception SWTException <ul>
94 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent</li>
95 * <li>ERROR_INVALID_SUBCLASS - if this class is not an allowed subclass</li>
96 * </ul>
97 *
98 * @see SWT
99 * @see Widget#checkSubclass
100 * @see Widget#getStyle
101 */
102 public this (Shell parent, int style) {
103 super (parent, checkStyle (parent, style));
104 checkSubclass ();
105 }
106
107 private static extern(Windows) uint CCHookFunc (HWND hdlg, uint uiMsg, uint lParam, int lpData) {
108 return sThis.CCHookProc( hdlg, uiMsg, lParam );
109 }
110
111 int CCHookProc (HWND hdlg, uint uiMsg, uint lParam ) {
112 switch (uiMsg) {
113 case OS.WM_INITDIALOG: {
114 RECT rect;
115 OS.GetWindowRect (hdlg, &rect);
116 width = rect.right - rect.left;
117 height = rect.bottom - rect.top;
118 if (title !is null && title.length !is 0) {
119 /* Use the character encoding for the default locale */
120 OS.SetWindowText (hdlg, StrToTCHARz(title));
121 }
122 break;
123 }
124 case OS.WM_DESTROY: {
125 RECT rect;
126 OS.GetWindowRect (hdlg, &rect);
127 int newWidth = rect.right - rect.left;
128 int newHeight = rect.bottom - rect.top;
129 if (newWidth < width || newHeight < height) {
130 //display.fullOpen = false;
131 } else {
132 if (newWidth > width || newHeight > height) {
133 //display.fullOpen = true;
134 }
135 }
136 break;
137 }
138 default:
139 }
140 return 0;
141 }
142
143 /**
144 * Returns the currently selected color in the receiver.
145 *
146 * @return the RGB value for the selected color, may be null
147 *
148 * @see PaletteData#getRGBs
149 */
150 public RGB getRGB () {
151 return rgb;
152 }
153
154 /**
155 * Makes the receiver visible and brings it to the front
156 * of the display.
157 *
158 * @return the selected color, or null if the dialog was
159 * cancelled, no color was selected, or an error
160 * occurred
161 *
162 * @exception SWTException <ul>
163 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
164 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
165 * </ul>
166 */
167 public RGB open () {
168
169 /* Get the owner HWND for the dialog */
170 auto hwndOwner = parent.handle;
171 auto hwndParent = parent.handle;
172
173 /*
174 * Feature in Windows. There is no API to set the orientation of a
175 * color dialog. It is always inherited from the parent. The fix is
176 * to create a hidden parent and set the orientation in the hidden
177 * parent for the dialog to inherit.
178 */
179 bool enabled = false;
180 if (!OS.IsWinCE && OS.WIN32_VERSION >= OS.VERSION(4, 10)) {
181 int dialogOrientation = style & (SWT.LEFT_TO_RIGHT | SWT.RIGHT_TO_LEFT);
182 int parentOrientation = parent.style & (SWT.LEFT_TO_RIGHT | SWT.RIGHT_TO_LEFT);
183 if (dialogOrientation !is parentOrientation) {
184 int exStyle = OS.WS_EX_NOINHERITLAYOUT;
185 if (dialogOrientation is SWT.RIGHT_TO_LEFT) exStyle |= OS.WS_EX_LAYOUTRTL;
186 hwndOwner = OS.CreateWindowEx (
187 exStyle,
188 Shell.DialogClass.ptr,
189 null,
190 0,
191 OS.CW_USEDEFAULT, 0, OS.CW_USEDEFAULT, 0,
192 hwndParent,
193 null,
194 OS.GetModuleHandle (null),
195 null);
196 enabled = OS.IsWindowEnabled (hwndParent) !is 0;
197 if (enabled) OS.EnableWindow (hwndParent, false);
198 }
199 }
200
201 /* Create the CCHookProc */
202 //Callback callback = new Callback (this, "CCHookProc", 4); //$NON-NLS-1$
203 //int lpfnHook = callback.getAddress ();
204 //if (lpfnHook is 0) SWT.error(SWT.ERROR_NO_MORE_CALLBACKS);
205
206 /* Allocate the Custom Colors */
207 display = parent.display;
208 if (display.lpCustColors is null) {
209 auto hHeap = OS.GetProcessHeap ();
210 display.lpCustColors = cast(uint*)OS.HeapAlloc (hHeap, OS.HEAP_ZERO_MEMORY, 16 * 4);
211 }
212
213 /* Open the dialog */
214 CHOOSECOLOR lpcc;
215 lpcc.lCustData = cast(int)cast(void*)this;
216 lpcc.lStructSize = CHOOSECOLOR.sizeof;
217 lpcc.Flags = OS.CC_ANYCOLOR | OS.CC_ENABLEHOOK;
218 //if (display.fullOpen) lpcc.Flags |= OS.CC_FULLOPEN;
219 lpcc.lpfnHook = &CCHookFunc;
220 lpcc.hwndOwner = hwndOwner;
221 lpcc.lpCustColors = display.lpCustColors;
222 if (rgb !is null) {
223 lpcc.Flags |= OS.CC_RGBINIT;
224 int red = rgb.red & 0xFF;
225 int green = (rgb.green << 8) & 0xFF00;
226 int blue = (rgb.blue << 16) & 0xFF0000;
227 lpcc.rgbResult = red | green | blue;
228 }
229
230 /* Make the parent shell be temporary modal */
231 Dialog oldModal = null;
232 if ((style & (SWT.APPLICATION_MODAL | SWT.SYSTEM_MODAL)) !is 0) {
233 oldModal = display.getModalDialog ();
234 display.setModalDialog (this);
235 }
236
237 /* Open the dialog */
238 bool success;
239 synchronized {
240 sThis = this;
241 success = cast(bool) OS.ChooseColor (&lpcc);
242 sThis = null;
243 }
244
245 /* Clear the temporary dialog modal parent */
246 if ((style & (SWT.APPLICATION_MODAL | SWT.SYSTEM_MODAL)) !is 0) {
247 display.setModalDialog (oldModal);
248 }
249
250 if (success) {
251 int red = lpcc.rgbResult & 0xFF;
252 int green = (lpcc.rgbResult >> 8) & 0xFF;
253 int blue = (lpcc.rgbResult >> 16) & 0xFF;
254 rgb = new RGB (red, green, blue);
255 }
256
257 /* Free the CCHookProc */
258 //callback.dispose ();
259
260 /* Free the Custom Colors */
261 /*
262 * This code is intentionally commented. Currently,
263 * there is exactly one set of custom colors per display.
264 * The memory associated with these colors is released
265 * when the display is disposed.
266 */
267 // if (lpCustColors !is 0) OS.HeapFree (hHeap, 0, lpCustColors);
268
269 /* Destroy the BIDI orientation window */
270 if (hwndParent !is hwndOwner) {
271 if (enabled) OS.EnableWindow (hwndParent, true);
272 OS.SetActiveWindow (hwndParent);
273 OS.DestroyWindow (hwndOwner);
274 }
275
276 /*
277 * This code is intentionally commented. On some
278 * platforms, the owner window is repainted right
279 * away when a dialog window exits. This behavior
280 * is currently unspecified.
281 */
282 // if (hwndOwner !is 0) OS.UpdateWindow (hwndOwner);
283
284 display = null;
285 if (!success) return null;
286 return rgb;
287 }
288
289 /**
290 * Sets the receiver's selected color to be the argument.
291 *
292 * @param rgb the new RGB value for the selected color, may be
293 * null to let the platform select a default when
294 * open() is called
295 * @see PaletteData#getRGBs
296 */
297 public void setRGB (RGB rgb) {
298 this.rgb = rgb;
299 }
300
301 }