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comparison org.eclipse.swt.win32.win32.x86/src/org/eclipse/swt/widgets/FontDialog.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.FontDialog;
14
15 import org.eclipse.swt.SWT;
16 import org.eclipse.swt.SWTException;
17 import org.eclipse.swt.graphics.Font;
18 import org.eclipse.swt.graphics.FontData;
19 import org.eclipse.swt.graphics.PaletteData;
20 import org.eclipse.swt.graphics.RGB;
21 import org.eclipse.swt.internal.win32.OS;
22
23 import org.eclipse.swt.widgets.Dialog;
24 import org.eclipse.swt.widgets.Shell;
25 import org.eclipse.swt.widgets.Display;
26
27 import java.lang.all;
28
29 /**
30 * Instances of this class allow the user to select a font
31 * from all available fonts in the system.
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 public class FontDialog : Dialog {
47 FontData fontData;
48 RGB rgb;
49
50 /**
51 * Constructs a new instance of this class given only its parent.
52 *
53 * @param parent a shell which will be the parent of the new instance
54 *
55 * @exception IllegalArgumentException <ul>
56 * <li>ERROR_NULL_ARGUMENT - if the parent is null</li>
57 * </ul>
58 * @exception SWTException <ul>
59 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent</li>
60 * <li>ERROR_INVALID_SUBCLASS - if this class is not an allowed subclass</li>
61 * </ul>
62 */
63 public this (Shell parent) {
64 this (parent, SWT.APPLICATION_MODAL);
65 }
66
67 /**
68 * Constructs a new instance of this class given its parent
69 * and a style value describing its behavior and appearance.
70 * <p>
71 * The style value is either one of the style constants defined in
72 * class <code>SWT</code> which is applicable to instances of this
73 * class, or must be built by <em>bitwise OR</em>'ing together
74 * (that is, using the <code>int</code> "|" operator) two or more
75 * of those <code>SWT</code> style constants. The class description
76 * lists the style constants that are applicable to the class.
77 * Style bits are also inherited from superclasses.
78 * </p>
79 *
80 * @param parent a shell which will be the parent of the new instance
81 * @param style the style of dialog to construct
82 *
83 * @exception IllegalArgumentException <ul>
84 * <li>ERROR_NULL_ARGUMENT - if the parent is null</li>
85 * </ul>
86 * @exception SWTException <ul>
87 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent</li>
88 * <li>ERROR_INVALID_SUBCLASS - if this class is not an allowed subclass</li>
89 * </ul>
90 */
91 public this (Shell parent, int style) {
92 super (parent, checkStyle (parent, style));
93 checkSubclass ();
94 }
95
96 /**
97 * Returns a FontData object describing the font that was
98 * selected in the dialog, or null if none is available.
99 *
100 * @return the FontData for the selected font, or null
101 * @deprecated use #getFontList ()
102 */
103 public FontData getFontData () {
104 return fontData;
105 }
106
107 /**
108 * Returns a FontData set describing the font that was
109 * selected in the dialog, or null if none is available.
110 *
111 * @return the FontData for the selected font, or null
112 * @since 2.1.1
113 */
114 public FontData [] getFontList () {
115 if (fontData is null) return null;
116 FontData [] result = new FontData [1];
117 result [0] = fontData;
118 return result;
119 }
120
121 /**
122 * Returns an RGB describing the color that was selected
123 * in the dialog, or null if none is available.
124 *
125 * @return the RGB value for the selected color, or null
126 *
127 * @see PaletteData#getRGBs
128 *
129 * @since 2.1
130 */
131 public RGB getRGB () {
132 return rgb;
133 }
134
135 /**
136 * Makes the dialog visible and brings it to the front
137 * of the display.
138 *
139 * @return a FontData object describing the font that was selected,
140 * or null if the dialog was cancelled or an error occurred
141 *
142 * @exception SWTException <ul>
143 * <li>ERROR_WIDGET_DISPOSED - if the dialog has been disposed</li>
144 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the dialog</li>
145 * </ul>
146 */
147 public FontData open () {
148 static if (OS.IsWinCE) SWT.error (SWT.ERROR_NOT_IMPLEMENTED);
149
150 /* Get the owner HWND for the dialog */
151 HWND hwndOwner = parent.handle;
152 auto hwndParent = parent.handle;
153
154 /*
155 * Feature in Windows. There is no API to set the orientation of a
156 * font dialog. It is always inherited from the parent. The fix is
157 * to create a hidden parent and set the orientation in the hidden
158 * parent for the dialog to inherit.
159 */
160 bool enabled = false;
161 if (!OS.IsWinCE && OS.WIN32_VERSION >= OS.VERSION(4, 10)) {
162 int dialogOrientation = style & (SWT.LEFT_TO_RIGHT | SWT.RIGHT_TO_LEFT);
163 int parentOrientation = parent.style & (SWT.LEFT_TO_RIGHT | SWT.RIGHT_TO_LEFT);
164 if (dialogOrientation !is parentOrientation) {
165 int exStyle = OS.WS_EX_NOINHERITLAYOUT;
166 if (dialogOrientation is SWT.RIGHT_TO_LEFT) exStyle |= OS.WS_EX_LAYOUTRTL;
167 hwndOwner = OS.CreateWindowEx (
168 exStyle,
169 Shell.DialogClass.ptr,
170 null,
171 0,
172 OS.CW_USEDEFAULT, 0, OS.CW_USEDEFAULT, 0,
173 hwndParent,
174 null,
175 OS.GetModuleHandle (null),
176 null);
177 enabled = OS.IsWindowEnabled (hwndParent) !is 0;
178 if (enabled) OS.EnableWindow (hwndParent, false);
179 }
180 }
181
182 /* Open the dialog */
183 auto hHeap = OS.GetProcessHeap ();
184 CHOOSEFONT lpcf;
185 lpcf.lStructSize = CHOOSEFONT.sizeof;
186 lpcf.hwndOwner = hwndOwner;
187 lpcf.Flags = OS.CF_SCREENFONTS | OS.CF_EFFECTS;
188 auto lpLogFont = cast(LOGFONT*) OS.HeapAlloc (hHeap, OS.HEAP_ZERO_MEMORY, LOGFONT.sizeof);
189 if (fontData !is null /+&& fontData.data !is null+/) {
190 LOGFONT logFont = fontData.data;
191 int lfHeight = logFont.lfHeight;
192 auto hDC = OS.GetDC (null);
193 int pixels = -cast(int)(0.5f + (fontData.height * OS.GetDeviceCaps(hDC, OS.LOGPIXELSY) / 72));
194 OS.ReleaseDC (null, hDC);
195 logFont.lfHeight = pixels;
196 lpcf.Flags |= OS.CF_INITTOLOGFONTSTRUCT;
197 OS.MoveMemory (lpLogFont, &logFont, LOGFONT.sizeof);
198 logFont.lfHeight = lfHeight;
199 }
200 lpcf.lpLogFont = lpLogFont;
201 if (rgb !is null) {
202 int red = rgb.red & 0xFF;
203 int green = (rgb.green << 8) & 0xFF00;
204 int blue = (rgb.blue << 16) & 0xFF0000;
205 lpcf.rgbColors = red | green | blue;
206 }
207
208 /* Make the parent shell be temporary modal */
209 Dialog oldModal = null;
210 Display display = null;
211 if ((style & (SWT.APPLICATION_MODAL | SWT.SYSTEM_MODAL)) !is 0) {
212 display = parent.getDisplay ();
213 oldModal = display.getModalDialog ();
214 display.setModalDialog (this);
215 }
216
217 /* Open the dialog */
218 bool success = cast(bool) OS.ChooseFont (&lpcf);
219
220 /* Clear the temporary dialog modal parent */
221 if ((style & (SWT.APPLICATION_MODAL | SWT.SYSTEM_MODAL)) !is 0) {
222 display.setModalDialog (oldModal);
223 }
224
225 /* Compute the result */
226 if (success) {
227 LOGFONT* logFont = lpLogFont;
228 //OS.MoveMemory (logFont, lpLogFont, LOGFONT.sizeof);
229
230 /*
231 * This will not work on multiple screens or
232 * for printing. Should use DC for the proper device.
233 */
234 auto hDC = OS.GetDC(null);
235 int logPixelsY = OS.GetDeviceCaps(hDC, OS.LOGPIXELSY);
236 int pixels = 0;
237 if (logFont.lfHeight > 0) {
238 /*
239 * Feature in Windows. If the lfHeight of the LOGFONT structure
240 * is positive, the lfHeight measures the height of the entire
241 * cell, including internal leading, in logical units. Since the
242 * height of a font in points does not include the internal leading,
243 * we must subtract the internal leading, which requires a TEXTMETRIC,
244 * which in turn requires font creation.
245 */
246 auto hFont = OS.CreateFontIndirect(logFont);
247 auto oldFont = OS.SelectObject(hDC, hFont);
248 TEXTMETRIC lptm ;
249 OS.GetTextMetrics(hDC, &lptm);
250 OS.SelectObject(hDC, oldFont);
251 OS.DeleteObject(hFont);
252 pixels = logFont.lfHeight - lptm.tmInternalLeading;
253 } else {
254 pixels = -logFont.lfHeight;
255 }
256 OS.ReleaseDC(null, hDC);
257
258 float points = pixels * 72f /logPixelsY;
259 fontData = FontData.win32_new (logFont, points);
260 int red = lpcf.rgbColors & 0xFF;
261 int green = (lpcf.rgbColors >> 8) & 0xFF;
262 int blue = (lpcf.rgbColors >> 16) & 0xFF;
263 rgb = new RGB (red, green, blue);
264 }
265
266 /* Free the OS memory */
267 if (lpLogFont !is null) OS.HeapFree (hHeap, 0, lpLogFont);
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 if (!success) return null;
285 return fontData;
286 }
287
288 /**
289 * Sets a FontData object describing the font to be
290 * selected by default in the dialog, or null to let
291 * the platform choose one.
292 *
293 * @param fontData the FontData to use initially, or null
294 * @deprecated use #setFontList (FontData [])
295 */
296 public void setFontData (FontData fontData) {
297 this.fontData = fontData;
298 }
299
300 /**
301 * Sets the set of FontData objects describing the font to
302 * be selected by default in the dialog, or null to let
303 * the platform choose one.
304 *
305 * @param fontData the set of FontData objects to use initially, or null
306 * to let the platform select a default when open() is called
307 *
308 * @see Font#getFontData
309 *
310 * @since 2.1.1
311 */
312 public void setFontList (FontData [] fontData) {
313 if (fontData !is null && fontData.length > 0) {
314 this.fontData = fontData [0];
315 } else {
316 this.fontData = null;
317 }
318 }
319
320 /**
321 * Sets the RGB describing the color to be selected by default
322 * in the dialog, or null to let the platform choose one.
323 *
324 * @param rgb the RGB value to use initially, or null to let
325 * the platform select a default when open() is called
326 *
327 * @see PaletteData#getRGBs
328 *
329 * @since 2.1
330 */
331 public void setRGB (RGB rgb) {
332 this.rgb = rgb;
333 }
334
335 }
336