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comparison org.eclipse.swt.win32.win32.x86/src/org/eclipse/swt/widgets/Label.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.Label;
14
15
16 import org.eclipse.swt.SWT;
17 import org.eclipse.swt.SWTException;
18 import org.eclipse.swt.graphics.GC;
19 import org.eclipse.swt.graphics.GCData;
20 import org.eclipse.swt.graphics.Image;
21 import org.eclipse.swt.graphics.Point;
22 import org.eclipse.swt.graphics.Rectangle;
23 import org.eclipse.swt.internal.win32.OS;
24
25 import org.eclipse.swt.widgets.Control;
26 import org.eclipse.swt.widgets.Composite;
27 import org.eclipse.swt.widgets.Display;
28 import org.eclipse.swt.widgets.Event;
29
30 import java.lang.all;
31
32 /**
33 * Instances of this class represent a non-selectable
34 * user interface object that displays a string or image.
35 * When SEPARATOR is specified, displays a single
36 * vertical or horizontal line.
37 * <p>
38 * Shadow styles are hints and may not be honoured
39 * by the platform. To create a separator label
40 * with the default shadow style for the platform,
41 * do not specify a shadow style.
42 * </p>
43 * <dl>
44 * <dt><b>Styles:</b></dt>
45 * <dd>SEPARATOR, HORIZONTAL, VERTICAL</dd>
46 * <dd>SHADOW_IN, SHADOW_OUT, SHADOW_NONE</dd>
47 * <dd>CENTER, LEFT, RIGHT, WRAP</dd>
48 * <dt><b>Events:</b></dt>
49 * <dd>(none)</dd>
50 * </dl>
51 * <p>
52 * Note: Only one of SHADOW_IN, SHADOW_OUT and SHADOW_NONE may be specified.
53 * SHADOW_NONE is a HINT. Only one of HORIZONTAL and VERTICAL may be specified.
54 * Only one of CENTER, LEFT and RIGHT may be specified.
55 * </p><p>
56 * IMPORTANT: This class is intended to be subclassed <em>only</em>
57 * within the SWT implementation.
58 * </p>
59 *
60 * @see <a href="http://www.eclipse.org/swt/snippets/#label">Label snippets</a>
61 * @see <a href="http://www.eclipse.org/swt/examples.php">SWT Example: ControlExample</a>
62 * @see <a href="http://www.eclipse.org/swt/">Sample code and further information</a>
63 */
64 public class Label : Control {
65
66 alias Control.computeSize computeSize;
67 alias Control.windowProc windowProc;
68
69 String text = "";
70 Image image;
71 static const int MARGIN = 4;
72 static const bool IMAGE_AND_TEXT = false;
73 private static /+const+/ WNDPROC LabelProc;
74 static const TCHAR[] LabelClass = "STATIC\0";
75
76 private static bool static_this_completed = false;
77 private static void static_this() {
78 if( static_this_completed ){
79 return;
80 }
81 synchronized {
82 if( static_this_completed ){
83 return;
84 }
85 WNDCLASS lpWndClass;
86 OS.GetClassInfo (null, LabelClass.ptr, &lpWndClass);
87 LabelProc = lpWndClass.lpfnWndProc;
88 static_this_completed = true;
89 }
90 }
91
92
93 /**
94 * Constructs a new instance of this class given its parent
95 * and a style value describing its behavior and appearance.
96 * <p>
97 * The style value is either one of the style constants defined in
98 * class <code>SWT</code> which is applicable to instances of this
99 * class, or must be built by <em>bitwise OR</em>'ing together
100 * (that is, using the <code>int</code> "|" operator) two or more
101 * of those <code>SWT</code> style constants. The class description
102 * lists the style constants that are applicable to the class.
103 * Style bits are also inherited from superclasses.
104 * </p>
105 *
106 * @param parent a composite control which will be the parent of the new instance (cannot be null)
107 * @param style the style of control to construct
108 *
109 * @exception IllegalArgumentException <ul>
110 * <li>ERROR_NULL_ARGUMENT - if the parent is null</li>
111 * </ul>
112 * @exception SWTException <ul>
113 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent</li>
114 * <li>ERROR_INVALID_SUBCLASS - if this class is not an allowed subclass</li>
115 * </ul>
116 *
117 * @see SWT#SEPARATOR
118 * @see SWT#HORIZONTAL
119 * @see SWT#VERTICAL
120 * @see SWT#SHADOW_IN
121 * @see SWT#SHADOW_OUT
122 * @see SWT#SHADOW_NONE
123 * @see SWT#CENTER
124 * @see SWT#LEFT
125 * @see SWT#RIGHT
126 * @see SWT#WRAP
127 * @see Widget#checkSubclass
128 * @see Widget#getStyle
129 */
130 public this (Composite parent, int style) {
131 static_this();
132 super (parent, checkStyle (style));
133 }
134
135 override int callWindowProc (HWND hwnd, int msg, int wParam, int lParam) {
136 if (handle is null) return 0;
137 return OS.CallWindowProc (LabelProc, hwnd, msg, wParam, lParam);
138 }
139
140 static int checkStyle (int style) {
141 style |= SWT.NO_FOCUS;
142 if ((style & SWT.SEPARATOR) !is 0) {
143 style = checkBits (style, SWT.VERTICAL, SWT.HORIZONTAL, 0, 0, 0, 0);
144 return checkBits (style, SWT.SHADOW_OUT, SWT.SHADOW_IN, SWT.SHADOW_NONE, 0, 0, 0);
145 }
146 return checkBits (style, SWT.LEFT, SWT.CENTER, SWT.RIGHT, 0, 0, 0);
147 }
148
149 override public Point computeSize (int wHint, int hHint, bool changed) {
150 checkWidget ();
151 int width = 0, height = 0, border = getBorderWidth ();
152 if ((style & SWT.SEPARATOR) !is 0) {
153 int lineWidth = OS.GetSystemMetrics (OS.SM_CXBORDER);
154 if ((style & SWT.HORIZONTAL) !is 0) {
155 width = DEFAULT_WIDTH; height = lineWidth * 2;
156 } else {
157 width = lineWidth * 2; height = DEFAULT_HEIGHT;
158 }
159 if (wHint !is SWT.DEFAULT) width = wHint;
160 if (hHint !is SWT.DEFAULT) height = hHint;
161 width += border * 2; height += border * 2;
162 return new Point (width, height);
163 }
164 int bits = OS.GetWindowLong (handle, OS.GWL_STYLE);
165 bool drawText = true;
166 bool drawImage = (bits & OS.SS_OWNERDRAW) is OS.SS_OWNERDRAW;
167 if (drawImage) {
168 if (image !is null) {
169 Rectangle rect = image.getBounds();
170 width += rect.width;
171 height += rect.height;
172 if (IMAGE_AND_TEXT) {
173 if (text.length !is 0) width += MARGIN;
174 } else {
175 drawText = false;
176 }
177 }
178 }
179 if (drawText) {
180 auto hDC = OS.GetDC (handle);
181 auto newFont = cast(HFONT) OS.SendMessage (handle, OS.WM_GETFONT, 0, 0);
182 auto oldFont = OS.SelectObject (hDC, newFont);
183 int length = OS.GetWindowTextLength (handle);
184 if (length is 0) {
185 TEXTMETRIC tm;
186 OS.GetTextMetrics (hDC, &tm);
187 height = Math.max (height, tm.tmHeight);
188 } else {
189 RECT rect;
190 int flags = OS.DT_CALCRECT | OS.DT_EDITCONTROL | OS.DT_EXPANDTABS;
191 if ((style & SWT.WRAP) !is 0 && wHint !is SWT.DEFAULT) {
192 flags |= OS.DT_WORDBREAK;
193 rect.right = Math.max (0, wHint - width);
194 }
195 TCHAR[] buffer = new TCHAR [/+getCodePage (),+/ length + 1];
196 OS.GetWindowText (handle, buffer.ptr, length + 1);
197 OS.DrawText (hDC, buffer.ptr, length, &rect, flags);
198 width += rect.right - rect.left;
199 height = Math.max (height, rect.bottom - rect.top);
200 }
201 if (newFont !is null) OS.SelectObject (hDC, oldFont);
202 OS.ReleaseDC (handle, hDC);
203 }
204 if (wHint !is SWT.DEFAULT) width = wHint;
205 if (hHint !is SWT.DEFAULT) height = hHint;
206 width += border * 2;
207 height += border * 2;
208 /*
209 * Feature in WinCE PPC. Text labels have a trim
210 * of one pixel wide on the right and left side.
211 * The fix is to increase the width to include
212 * this trim.
213 */
214 if (OS.IsWinCE && !drawImage) width += 2;
215 return new Point (width, height);
216 }
217
218 override void createHandle () {
219 super.createHandle ();
220 state |= THEME_BACKGROUND;
221 }
222
223 /**
224 * Returns a value which describes the position of the
225 * text or image in the receiver. The value will be one of
226 * <code>LEFT</code>, <code>RIGHT</code> or <code>CENTER</code>
227 * unless the receiver is a <code>SEPARATOR</code> label, in
228 * which case, <code>NONE</code> is returned.
229 *
230 * @return the alignment
231 *
232 * @exception SWTException <ul>
233 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
234 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
235 * </ul>
236 */
237 public int getAlignment () {
238 checkWidget ();
239 if ((style & SWT.SEPARATOR) !is 0) return 0;
240 if ((style & SWT.LEFT) !is 0) return SWT.LEFT;
241 if ((style & SWT.CENTER) !is 0) return SWT.CENTER;
242 if ((style & SWT.RIGHT) !is 0) return SWT.RIGHT;
243 return SWT.LEFT;
244 }
245
246 /**
247 * Returns the receiver's image if it has one, or null
248 * if it does not.
249 *
250 * @return the receiver's image
251 *
252 * @exception SWTException <ul>
253 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
254 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
255 * </ul>
256 */
257 public Image getImage () {
258 checkWidget ();
259 return image;
260 }
261
262 override String getNameText () {
263 return getText ();
264 }
265
266 /**
267 * Returns the receiver's text, which will be an empty
268 * string if it has never been set or if the receiver is
269 * a <code>SEPARATOR</code> label.
270 *
271 * @return the receiver's text
272 *
273 * @exception SWTException <ul>
274 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
275 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
276 * </ul>
277 */
278 public String getText () {
279 checkWidget ();
280 if ((style & SWT.SEPARATOR) !is 0) return "";
281 return text;
282 }
283
284 override bool mnemonicHit (wchar key) {
285 Composite control = this.parent;
286 while (control !is null) {
287 Control [] children = control._getChildren ();
288 int index = 0;
289 while (index < children.length) {
290 if (children [index] is this) break;
291 index++;
292 }
293 index++;
294 if (index < children.length) {
295 if (children [index].setFocus ()) return true;
296 }
297 control = control.parent;
298 }
299 return false;
300 }
301
302 override bool mnemonicMatch (wchar key) {
303 wchar mnemonic = findMnemonic (getText ());
304 if (mnemonic is '\0') return false;
305 return CharacterToUpper (key) is CharacterToUpper (mnemonic);
306 }
307
308 override void releaseWidget () {
309 super.releaseWidget ();
310 text = null;
311 image = null;
312 }
313
314 /**
315 * Controls how text and images will be displayed in the receiver.
316 * The argument should be one of <code>LEFT</code>, <code>RIGHT</code>
317 * or <code>CENTER</code>. If the receiver is a <code>SEPARATOR</code>
318 * label, the argument is ignored and the alignment is not changed.
319 *
320 * @param alignment the new alignment
321 *
322 * @exception SWTException <ul>
323 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
324 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
325 * </ul>
326 */
327 public void setAlignment (int alignment) {
328 checkWidget ();
329 if ((style & SWT.SEPARATOR) !is 0) return;
330 if ((alignment & (SWT.LEFT | SWT.RIGHT | SWT.CENTER)) is 0) return;
331 style &= ~(SWT.LEFT | SWT.RIGHT | SWT.CENTER);
332 style |= alignment & (SWT.LEFT | SWT.RIGHT | SWT.CENTER);
333 int bits = OS.GetWindowLong (handle, OS.GWL_STYLE);
334 if ((bits & OS.SS_OWNERDRAW) !is OS.SS_OWNERDRAW) {
335 bits &= ~(OS.SS_LEFTNOWORDWRAP | OS.SS_CENTER | OS.SS_RIGHT);
336 if ((style & SWT.LEFT) !is 0) {
337 if ((style & SWT.WRAP) !is 0) {
338 bits |= OS.SS_LEFT;
339 } else {
340 bits |= OS.SS_LEFTNOWORDWRAP;
341 }
342 }
343 if ((style & SWT.CENTER) !is 0) bits |= OS.SS_CENTER;
344 if ((style & SWT.RIGHT) !is 0) bits |= OS.SS_RIGHT;
345 OS.SetWindowLong (handle, OS.GWL_STYLE, bits);
346 }
347 OS.InvalidateRect (handle, null, true);
348 }
349
350 /**
351 * Sets the receiver's image to the argument, which may be
352 * null indicating that no image should be displayed.
353 *
354 * @param image the image to display on the receiver (may be null)
355 *
356 * @exception IllegalArgumentException <ul>
357 * <li>ERROR_INVALID_ARGUMENT - if the image has been disposed</li>
358 * </ul>
359 * @exception SWTException <ul>
360 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
361 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
362 * </ul>
363 */
364 public void setImage (Image image) {
365 checkWidget ();
366 if ((style & SWT.SEPARATOR) !is 0) return;
367 if (image !is null && image.isDisposed()) error(SWT.ERROR_INVALID_ARGUMENT);
368 this.image = image;
369 int bits = OS.GetWindowLong (handle, OS.GWL_STYLE);
370 if ((bits & OS.SS_OWNERDRAW) !is OS.SS_OWNERDRAW) {
371 bits &= ~(OS.SS_LEFTNOWORDWRAP | OS.SS_CENTER | OS.SS_RIGHT);
372 bits |= OS.SS_OWNERDRAW;
373 OS.SetWindowLong (handle, OS.GWL_STYLE, bits);
374 }
375 OS.InvalidateRect (handle, null, true);
376 }
377
378 /**
379 * Sets the receiver's text.
380 * <p>
381 * This method sets the widget label. The label may include
382 * the mnemonic character and line delimiters.
383 * </p>
384 * <p>
385 * Mnemonics are indicated by an '&amp;' that causes the next
386 * character to be the mnemonic. When the user presses a
387 * key sequence that matches the mnemonic, focus is assigned
388 * to the control that follows the label. On most platforms,
389 * the mnemonic appears underlined but may be emphasised in a
390 * platform specific manner. The mnemonic indicator character
391 * '&amp;' can be escaped by doubling it in the string, causing
392 * a single '&amp;' to be displayed.
393 * </p>
394 *
395 * @param string the new text
396 *
397 * @exception SWTException <ul>
398 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
399 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
400 * </ul>
401 */
402 public void setText (String string) {
403 checkWidget ();
404 // SWT extensions allow null argument
405 //if (string is null) error (SWT.ERROR_NULL_ARGUMENT);
406 if ((style & SWT.SEPARATOR) !is 0) return;
407 /*
408 * Feature in Windows. For some reason, SetWindowText() for
409 * static controls redraws the control, even when the text has
410 * has not changed. The fix is to check for this case and do
411 * nothing.
412 */
413 if (string.equals(text)) return;
414 text = string;
415 if (image is null || !IMAGE_AND_TEXT) {
416 int oldBits = OS.GetWindowLong (handle, OS.GWL_STYLE), newBits = oldBits;
417 newBits &= ~OS.SS_OWNERDRAW;
418 if ((style & SWT.LEFT) !is 0) {
419 if ((style & SWT.WRAP) !is 0) {
420 newBits |= OS.SS_LEFT;
421 } else {
422 newBits |= OS.SS_LEFTNOWORDWRAP;
423 }
424 }
425 if ((style & SWT.CENTER) !is 0) newBits |= OS.SS_CENTER;
426 if ((style & SWT.RIGHT) !is 0) newBits |= OS.SS_RIGHT;
427 if (oldBits !is newBits) OS.SetWindowLong (handle, OS.GWL_STYLE, newBits);
428 }
429 string = Display.withCrLf (string);
430 TCHAR* buffer = StrToTCHARz ( getCodePage (), string);
431 OS.SetWindowText (handle, buffer);
432 /*
433 * Bug in Windows. For some reason, the HBRUSH that
434 * is returned from WM_CTRLCOLOR is misaligned when
435 * the label uses it to draw. If the brush is a solid
436 * color, this does not matter. However, if the brush
437 * contains an image, the image is misaligned. The
438 * fix is to draw the background in WM_ERASEBKGND.
439 */
440 if (OS.COMCTL32_MAJOR < 6) {
441 if (findImageControl () !is null) OS.InvalidateRect (handle, null, true);
442 }
443 }
444
445 override int widgetExtStyle () {
446 int bits = super.widgetExtStyle () & ~OS.WS_EX_CLIENTEDGE;
447 if ((style & SWT.BORDER) !is 0) return bits | OS.WS_EX_STATICEDGE;
448 return bits;
449 }
450
451 override int widgetStyle () {
452 int bits = super.widgetStyle () | OS.SS_NOTIFY;
453 if ((style & SWT.SEPARATOR) !is 0) return bits | OS.SS_OWNERDRAW;
454 if (OS.WIN32_VERSION >= OS.VERSION (5, 0)) {
455 if ((style & SWT.WRAP) !is 0) bits |= OS.SS_EDITCONTROL;
456 }
457 if ((style & SWT.CENTER) !is 0) return bits | OS.SS_CENTER;
458 if ((style & SWT.RIGHT) !is 0) return bits | OS.SS_RIGHT;
459 if ((style & SWT.WRAP) !is 0) return bits | OS.SS_LEFT;
460 return bits | OS.SS_LEFTNOWORDWRAP;
461 }
462
463 override String windowClass () {
464 return TCHARsToStr( LabelClass );
465 }
466
467 override int windowProc () {
468 return cast(int) LabelProc;
469 }
470
471 override LRESULT WM_ERASEBKGND (int wParam, int lParam) {
472 LRESULT result = super.WM_ERASEBKGND (wParam, lParam);
473 if (result !is null) return result;
474 int bits = OS.GetWindowLong (handle, OS.GWL_STYLE);
475 if ((bits & OS.SS_OWNERDRAW) is OS.SS_OWNERDRAW) {
476 return LRESULT.ONE;
477 }
478 /*
479 * Bug in Windows. For some reason, the HBRUSH that
480 * is returned from WM_CTRLCOLOR is misaligned when
481 * the label uses it to draw. If the brush is a solid
482 * color, this does not matter. However, if the brush
483 * contains an image, the image is misaligned. The
484 * fix is to draw the background in WM_ERASEBKGND.
485 */
486 if (OS.COMCTL32_MAJOR < 6) {
487 if (findImageControl () !is null) {
488 drawBackground (cast(HANDLE)wParam);
489 return LRESULT.ONE;
490 }
491 }
492 return result;
493 }
494
495 override LRESULT WM_SIZE (int wParam, int lParam) {
496 LRESULT result = super.WM_SIZE (wParam, lParam);
497 if (isDisposed ()) return result;
498 if ((style & SWT.SEPARATOR) !is 0) {
499 OS.InvalidateRect (handle, null, true);
500 return result;
501 }
502 int bits = OS.GetWindowLong (handle, OS.GWL_STYLE);
503 if ((bits & OS.SS_OWNERDRAW) is OS.SS_OWNERDRAW) {
504 OS.InvalidateRect (handle, null, true);
505 return result;
506 }
507 /*
508 * Bug in Windows. For some reason, a label with
509 * style SS_LEFT, SS_CENTER or SS_RIGHT does not
510 * redraw the text in the new position when resized.
511 * Note that SS_LEFTNOWORDWRAP does not have the
512 * problem. The fix is to force the redraw.
513 */
514 if ((bits & OS.SS_LEFTNOWORDWRAP) !is OS.SS_LEFTNOWORDWRAP) {
515 OS.InvalidateRect (handle, null, true);
516 return result;
517 }
518 return result;
519 }
520
521 override LRESULT WM_UPDATEUISTATE (int wParam, int lParam) {
522 LRESULT result = super.WM_UPDATEUISTATE (wParam, lParam);
523 if (result !is null) return result;
524 /*
525 * Feature in Windows. When WM_UPDATEUISTATE is sent to
526 * a static control, it sends WM_CTLCOLORSTATIC to get the
527 * foreground and background. If any drawing happens in
528 * WM_CTLCOLORSTATIC, it overwrites the contents of the control.
529 * The fix is draw the static without drawing the background
530 * and avoid the static window proc.
531 */
532 bool redraw = findImageControl () !is null;
533 if (!redraw) {
534 if ((state & THEME_BACKGROUND) !is 0) {
535 if (OS.COMCTL32_MAJOR >= 6 && OS.IsAppThemed ()) {
536 redraw = findThemeControl () !is null;
537 }
538 }
539 }
540 if (redraw) {
541 OS.InvalidateRect (handle, null, false);
542 int /*long*/ code = OS.DefWindowProc (handle, OS.WM_UPDATEUISTATE, wParam, lParam);
543 return new LRESULT (code);
544 }
545 return result;
546 }
547
548 override LRESULT wmColorChild (int wParam, int lParam) {
549 /*
550 * Bug in Windows. For some reason, the HBRUSH that
551 * is returned from WM_CTRLCOLOR is misaligned when
552 * the label uses it to draw. If the brush is a solid
553 * color, this does not matter. However, if the brush
554 * contains an image, the image is misaligned. The
555 * fix is to draw the background in WM_ERASEBKGND.
556 */
557 LRESULT result = super.wmColorChild (wParam, lParam);
558 if (OS.COMCTL32_MAJOR < 6) {
559 int bits = OS.GetWindowLong (handle, OS.GWL_STYLE);
560 if ((bits & OS.SS_OWNERDRAW) !is OS.SS_OWNERDRAW) {
561 if (findImageControl () !is null) {
562 OS.SetBkMode ( cast(HANDLE) wParam, OS.TRANSPARENT);
563 return new LRESULT ( cast(int)OS.GetStockObject (OS.NULL_BRUSH));
564 }
565 }
566 }
567 return result;
568 }
569
570 override LRESULT WM_PAINT (int wParam, int lParam) {
571 static if (OS.IsWinCE) {
572 bool drawImage = image !is null;
573 bool drawSeparator = (style & SWT.SEPARATOR) !is 0 && (style & SWT.SHADOW_NONE) is 0;
574 if (drawImage || drawSeparator) {
575 LRESULT result = null;
576 PAINTSTRUCT ps;
577 GCData data = new GCData ();
578 data.ps = &ps;
579 data.hwnd = handle;
580 GC gc = new_GC (data);
581 if (gc !is null) {
582 drawBackground (gc.handle);
583 RECT clientRect;
584 OS.GetClientRect (handle, &clientRect);
585 if (drawSeparator) {
586 RECT rect;
587 int lineWidth = OS.GetSystemMetrics (OS.SM_CXBORDER);
588 int flags = (style & SWT.SHADOW_IN) !is 0 ? OS.EDGE_SUNKEN : OS.EDGE_ETCHED;
589 if ((style & SWT.HORIZONTAL) !is 0) {
590 int bottom = clientRect.top + Math.max (lineWidth * 2, (clientRect.bottom - clientRect.top) / 2);
591 OS.SetRect (&rect, clientRect.left, clientRect.top, clientRect.right, bottom);
592 OS.DrawEdge (gc.handle, &rect, flags, OS.BF_BOTTOM);
593 } else {
594 int right = clientRect.left + Math.max (lineWidth * 2, (clientRect.right - clientRect.left) / 2);
595 OS.SetRect (&rect, clientRect.left, clientRect.top, right, clientRect.bottom);
596 OS.DrawEdge (gc.handle, &rect, flags, OS.BF_RIGHT);
597 }
598 result = LRESULT.ONE;
599 }
600 if (drawImage) {
601 Rectangle imageBounds = image.getBounds ();
602 int x = 0;
603 if ((style & SWT.CENTER) !is 0) {
604 x = Math.max (0, (clientRect.right - imageBounds.width) / 2);
605 } else {
606 if ((style & SWT.RIGHT) !is 0) {
607 x = Math.max (0, (clientRect.right - imageBounds.width));
608 }
609 }
610 gc.drawImage (image, x, Math.max (0, (clientRect.bottom - imageBounds.height) / 2));
611 result = LRESULT.ONE;
612 }
613 int width = ps.rcPaint.right - ps.rcPaint.left;
614 int height = ps.rcPaint.bottom - ps.rcPaint.top;
615 if (width !is 0 && height !is 0) {
616 Event event = new Event ();
617 event.gc = gc;
618 event.x = ps.rcPaint.left;
619 event.y = ps.rcPaint.top;
620 event.width = width;
621 event.height = height;
622 sendEvent (SWT.Paint, event);
623 // widget could be disposed at this point
624 event.gc = null;
625 }
626 gc.dispose ();
627 }
628 return result;
629 }
630 }
631 return super.WM_PAINT(wParam, lParam);
632 }
633
634 override LRESULT wmDrawChild (int wParam, int lParam) {
635 DRAWITEMSTRUCT* struct_ = cast(DRAWITEMSTRUCT*)lParam;
636 drawBackground (struct_.hDC);
637 if ((style & SWT.SEPARATOR) !is 0) {
638 if ((style & SWT.SHADOW_NONE) !is 0) return null;
639 RECT rect;
640 int lineWidth = OS.GetSystemMetrics (OS.SM_CXBORDER);
641 int flags = (style & SWT.SHADOW_IN) !is 0 ? OS.EDGE_SUNKEN : OS.EDGE_ETCHED;
642 if ((style & SWT.HORIZONTAL) !is 0) {
643 int bottom = struct_.rcItem.top + Math.max (lineWidth * 2, (struct_.rcItem.bottom - struct_.rcItem.top) / 2);
644 OS.SetRect (&rect, struct_.rcItem.left, struct_.rcItem.top, struct_.rcItem.right, bottom);
645 OS.DrawEdge (struct_.hDC, &rect, flags, OS.BF_BOTTOM);
646 } else {
647 int right = struct_.rcItem.left + Math.max (lineWidth * 2, (struct_.rcItem.right - struct_.rcItem.left) / 2);
648 OS.SetRect (&rect, struct_.rcItem.left, struct_.rcItem.top, right, struct_.rcItem.bottom);
649 OS.DrawEdge (struct_.hDC, &rect, flags, OS.BF_RIGHT);
650 }
651 } else {
652 int width = struct_.rcItem.right - struct_.rcItem.left;
653 int height = struct_.rcItem.bottom - struct_.rcItem.top;
654 if (width !is 0 && height !is 0) {
655 bool drawImage = image !is null;
656 bool drawText = IMAGE_AND_TEXT && text.length !is 0;
657 int margin = drawText && drawImage ? MARGIN : 0;
658 int imageWidth = 0, imageHeight = 0;
659 if (drawImage) {
660 Rectangle rect = image.getBounds ();
661 imageWidth = rect.width;
662 imageHeight = rect.height;
663 }
664 RECT rect;
665 TCHAR* buffer = null;
666 int textWidth = 0, textHeight = 0, flags = 0;
667 if (drawText) {
668 //rect = new RECT ();
669 flags = OS.DT_CALCRECT | OS.DT_EDITCONTROL | OS.DT_EXPANDTABS;
670 if ((style & SWT.LEFT) !is 0) flags |= OS.DT_LEFT;
671 if ((style & SWT.CENTER) !is 0) flags |= OS.DT_CENTER;
672 if ((style & SWT.RIGHT) !is 0) flags |= OS.DT_RIGHT;
673 if ((style & SWT.WRAP) !is 0) {
674 flags |= OS.DT_WORDBREAK;
675 rect.right = Math.max (0, width - imageWidth - margin);
676 }
677 buffer = StrToTCHARz (/+getCodePage (),+/ text);
678 OS.DrawText (struct_.hDC, buffer, -1, &rect, flags);
679 textWidth = rect.right - rect.left;
680 textHeight = rect.bottom - rect.top;
681 }
682 int x = 0;
683 if ((style & SWT.CENTER) !is 0) {
684 x = Math.max (0, (width - imageWidth - textWidth - margin) / 2);
685 } else {
686 if ((style & SWT.RIGHT) !is 0) {
687 x = width - imageWidth - textWidth - margin;
688 }
689 }
690 if (drawImage) {
691 GCData data = new GCData();
692 data.device = display;
693 GC gc = GC.win32_new (struct_.hDC, data);
694 Image image = getEnabled () ? this.image : new Image (display, this.image, SWT.IMAGE_DISABLE);
695 gc.drawImage (image, x, Math.max (0, (height - imageHeight) / 2));
696 if (image !is this.image) image.dispose ();
697 gc.dispose ();
698 x += imageWidth + margin;
699 }
700 if (drawText) {
701 flags &= ~OS.DT_CALCRECT;
702 rect.left = x;
703 rect.right += rect.left;
704 rect.top = Math.max (0, (height - textHeight) / 2);
705 rect.bottom += rect.top;
706 OS.DrawText (struct_.hDC, buffer, -1, &rect, flags);
707 }
708 }
709 }
710 return null;
711 }
712
713 }
714