1 /* File: button.c -- Button type widgets
2 *
3 * Copyright (C) 1993 Johannes Ruscheinski
4 * Copyright (C) 1993 David Metcalfe
5 * Copyright (C) 1994 Alexandre Julliard
6 *
7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
11 *
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with this library; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
20 *
21 * NOTES
22 *
23 * This code was audited for completeness against the documented features
24 * of Comctl32.dll version 6.0 on Oct. 3, 2004, by Dimitrie O. Paun.
25 *
26 * Unless otherwise noted, we believe this code to be complete, as per
27 * the specification mentioned above.
28 * If you discover missing features, or bugs, please note them below.
29 *
30 * TODO
31 * Styles
32 * - BS_NOTIFY: is it complete?
33 * - BS_RIGHTBUTTON: same as BS_LEFTTEXT
34 * - BS_TYPEMASK
35 *
36 * Messages
37 * - WM_CHAR: Checks a (manual or automatic) check box on '+' or '=', clears it on '-' key.
38 * - WM_SETFOCUS: For (manual or automatic) radio buttons, send the parent window BN_CLICKED
39 * - WM_NCCREATE: Turns any BS_OWNERDRAW button into a BS_PUSHBUTTON button.
40 * - WM_SYSKEYUP
41 * - BCM_GETIDEALSIZE
42 * - BCM_GETIMAGELIST
43 * - BCM_GETTEXTMARGIN
44 * - BCM_SETIMAGELIST
45 * - BCM_SETTEXTMARGIN
46 *
47 * Notifications
48 * - BCN_HOTITEMCHANGE
49 * - BN_DISABLE
50 * - BN_PUSHED/BN_HILITE
51 * + BN_KILLFOCUS: is it OK?
52 * - BN_PAINT
53 * + BN_SETFOCUS: is it OK?
54 * - BN_UNPUSHED/BN_UNHILITE
55 * - NM_CUSTOMDRAW
56 *
57 * Structures/Macros/Definitions
58 * - BUTTON_IMAGELIST
59 * - NMBCHOTITEM
60 * - Button_GetIdealSize
61 * - Button_GetImageList
62 * - Button_GetTextMargin
63 * - Button_SetImageList
64 * - Button_SetTextMargin
65 */
66
67 #include <stdarg.h>
68 #include <string.h>
69 #include <stdlib.h>
70
71 #define OEMRESOURCE
72
73 #include "windef.h"
74 #include "winbase.h"
75 #include "wingdi.h"
76 #include "wine/winuser16.h"
77 #include "controls.h"
78 #include "user_private.h"
79 #include "wine/debug.h"
80
81 WINE_DEFAULT_DEBUG_CHANNEL(button);
82
83 /* GetWindowLong offsets for window extra information */
84 #define STATE_GWL_OFFSET 0
85 #define HFONT_GWL_OFFSET (sizeof(LONG))
86 #define HIMAGE_GWL_OFFSET (HFONT_GWL_OFFSET+sizeof(HFONT))
87 #define NB_EXTRA_BYTES (HIMAGE_GWL_OFFSET+sizeof(HANDLE))
88
89 /* Button state values */
90 #define BUTTON_UNCHECKED 0x00
91 #define BUTTON_CHECKED 0x01
92 #define BUTTON_3STATE 0x02
93 #define BUTTON_HIGHLIGHTED 0x04
94 #define BUTTON_HASFOCUS 0x08
95 #define BUTTON_NSTATES 0x0F
96 /* undocumented flags */
97 #define BUTTON_BTNPRESSED 0x40
98 #define BUTTON_UNKNOWN2 0x20
99 #define BUTTON_UNKNOWN3 0x10
100
101 #define BUTTON_NOTIFY_PARENT(hWnd, code) \
102 do { /* Notify parent which has created this button control */ \
103 TRACE("notification " #code " sent to hwnd=%p\n", GetParent(hWnd)); \
104 SendMessageW(GetParent(hWnd), WM_COMMAND, \
105 MAKEWPARAM(GetWindowLongPtrW((hWnd),GWLP_ID), (code)), \
106 (LPARAM)(hWnd)); \
107 } while(0)
108
109 static UINT BUTTON_CalcLabelRect( HWND hwnd, HDC hdc, RECT *rc );
110 static void PB_Paint( HWND hwnd, HDC hDC, UINT action );
111 static void CB_Paint( HWND hwnd, HDC hDC, UINT action );
112 static void GB_Paint( HWND hwnd, HDC hDC, UINT action );
113 static void UB_Paint( HWND hwnd, HDC hDC, UINT action );
114 static void OB_Paint( HWND hwnd, HDC hDC, UINT action );
115 static void BUTTON_CheckAutoRadioButton( HWND hwnd );
116 static LRESULT WINAPI ButtonWndProcA( HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam );
117 static LRESULT WINAPI ButtonWndProcW( HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam );
118
119 #define MAX_BTN_TYPE 12
120
121 static const WORD maxCheckState[MAX_BTN_TYPE] =
122 {
123 BUTTON_UNCHECKED, /* BS_PUSHBUTTON */
124 BUTTON_UNCHECKED, /* BS_DEFPUSHBUTTON */
125 BUTTON_CHECKED, /* BS_CHECKBOX */
126 BUTTON_CHECKED, /* BS_AUTOCHECKBOX */
127 BUTTON_CHECKED, /* BS_RADIOBUTTON */
128 BUTTON_3STATE, /* BS_3STATE */
129 BUTTON_3STATE, /* BS_AUTO3STATE */
130 BUTTON_UNCHECKED, /* BS_GROUPBOX */
131 BUTTON_UNCHECKED, /* BS_USERBUTTON */
132 BUTTON_CHECKED, /* BS_AUTORADIOBUTTON */
133 BUTTON_UNCHECKED, /* Not defined */
134 BUTTON_UNCHECKED /* BS_OWNERDRAW */
135 };
136
137 typedef void (*pfPaint)( HWND hwnd, HDC hdc, UINT action );
138
139 static const pfPaint btnPaintFunc[MAX_BTN_TYPE] =
140 {
141 PB_Paint, /* BS_PUSHBUTTON */
142 PB_Paint, /* BS_DEFPUSHBUTTON */
143 CB_Paint, /* BS_CHECKBOX */
144 CB_Paint, /* BS_AUTOCHECKBOX */
145 CB_Paint, /* BS_RADIOBUTTON */
146 CB_Paint, /* BS_3STATE */
147 CB_Paint, /* BS_AUTO3STATE */
148 GB_Paint, /* BS_GROUPBOX */
149 UB_Paint, /* BS_USERBUTTON */
150 CB_Paint, /* BS_AUTORADIOBUTTON */
151 NULL, /* Not defined */
152 OB_Paint /* BS_OWNERDRAW */
153 };
154
155 static HBITMAP hbitmapCheckBoxes = 0;
156 static WORD checkBoxWidth = 0, checkBoxHeight = 0;
157
158
159 /*********************************************************************
160 * button class descriptor
161 */
162 static const WCHAR buttonW[] = {'B','u','t','t','o','n',0};
163 const struct builtin_class_descr BUTTON_builtin_class =
164 {
165 buttonW, /* name */
166 CS_DBLCLKS | CS_VREDRAW | CS_HREDRAW | CS_PARENTDC, /* style */
167 ButtonWndProcA, /* procA */
168 ButtonWndProcW, /* procW */
169 NB_EXTRA_BYTES, /* extra */
170 IDC_ARROW, /* cursor */
171 0 /* brush */
172 };
173
174
175 static inline LONG get_button_state( HWND hwnd )
176 {
177 return GetWindowLongW( hwnd, STATE_GWL_OFFSET );
178 }
179
180 static inline void set_button_state( HWND hwnd, LONG state )
181 {
182 SetWindowLongW( hwnd, STATE_GWL_OFFSET, state );
183 }
184
185 static inline HFONT get_button_font( HWND hwnd )
186 {
187 return (HFONT)GetWindowLongPtrW( hwnd, HFONT_GWL_OFFSET );
188 }
189
190 static inline void set_button_font( HWND hwnd, HFONT font )
191 {
192 SetWindowLongPtrW( hwnd, HFONT_GWL_OFFSET, (LONG_PTR)font );
193 }
194
195 static inline UINT get_button_type( LONG window_style )
196 {
197 return (window_style & 0x0f);
198 }
199
200 /* paint a button of any type */
201 static inline void paint_button( HWND hwnd, LONG style, UINT action )
202 {
203 if (btnPaintFunc[style] && IsWindowVisible(hwnd))
204 {
205 HDC hdc = GetDC( hwnd );
206 btnPaintFunc[style]( hwnd, hdc, action );
207 ReleaseDC( hwnd, hdc );
208 }
209 }
210
211 /* retrieve the button text; returned buffer must be freed by caller */
212 static inline WCHAR *get_button_text( HWND hwnd )
213 {
214 INT len = 512;
215 WCHAR *buffer = HeapAlloc( GetProcessHeap(), 0, (len + 1) * sizeof(WCHAR) );
216 if (buffer) InternalGetWindowText( hwnd, buffer, len + 1 );
217 return buffer;
218 }
219
220 static void setup_clipping( HWND hwnd, HDC hdc )
221 {
222 RECT rc;
223
224 GetClientRect( hwnd, &rc );
225 DPtoLP( hdc, (POINT *)&rc, 2 );
226 IntersectClipRect( hdc, rc.left, rc.top, rc.right, rc.bottom );
227 }
228
229 /***********************************************************************
230 * ButtonWndProc_common
231 */
232 static LRESULT WINAPI ButtonWndProc_common(HWND hWnd, UINT uMsg,
233 WPARAM wParam, LPARAM lParam, BOOL unicode )
234 {
235 RECT rect;
236 POINT pt;
237 LONG style = GetWindowLongW( hWnd, GWL_STYLE );
238 UINT btn_type = get_button_type( style );
239 LONG state;
240 HANDLE oldHbitmap;
241
242 pt.x = (short)LOWORD(lParam);
243 pt.y = (short)HIWORD(lParam);
244
245 switch (uMsg)
246 {
247 case WM_GETDLGCODE:
248 switch(btn_type)
249 {
250 case BS_USERBUTTON:
251 case BS_PUSHBUTTON: return DLGC_BUTTON | DLGC_UNDEFPUSHBUTTON;
252 case BS_DEFPUSHBUTTON: return DLGC_BUTTON | DLGC_DEFPUSHBUTTON;
253 case BS_RADIOBUTTON:
254 case BS_AUTORADIOBUTTON: return DLGC_BUTTON | DLGC_RADIOBUTTON;
255 case BS_GROUPBOX: return DLGC_STATIC;
256 default: return DLGC_BUTTON;
257 }
258
259 case WM_ENABLE:
260 paint_button( hWnd, btn_type, ODA_DRAWENTIRE );
261 break;
262
263 case WM_CREATE:
264 if (!hbitmapCheckBoxes)
265 {
266 BITMAP bmp;
267 hbitmapCheckBoxes = LoadBitmapW(0, MAKEINTRESOURCEW(OBM_CHECKBOXES));
268 GetObjectW( hbitmapCheckBoxes, sizeof(bmp), &bmp );
269 checkBoxWidth = bmp.bmWidth / 4;
270 checkBoxHeight = bmp.bmHeight / 3;
271 }
272 if (btn_type >= MAX_BTN_TYPE)
273 return -1; /* abort */
274 set_button_state( hWnd, BUTTON_UNCHECKED );
275 return 0;
276
277 case WM_ERASEBKGND:
278 if (btn_type == BS_OWNERDRAW)
279 {
280 HDC hdc = (HDC)wParam;
281 RECT rc;
282 HBRUSH hBrush;
283 HWND parent = GetParent(hWnd);
284 if (!parent) parent = hWnd;
285 hBrush = (HBRUSH)SendMessageW(parent, WM_CTLCOLORBTN, (WPARAM)hdc, (LPARAM)hWnd);
286 if (!hBrush) /* did the app forget to call defwindowproc ? */
287 hBrush = (HBRUSH)DefWindowProcW(parent, WM_CTLCOLORBTN,
288 (WPARAM)hdc, (LPARAM)hWnd);
289 GetClientRect(hWnd, &rc);
290 FillRect(hdc, &rc, hBrush);
291 }
292 return 1;
293
294 case WM_PRINTCLIENT:
295 case WM_PAINT:
296 if (btnPaintFunc[btn_type])
297 {
298 PAINTSTRUCT ps;
299 HDC hdc = wParam ? (HDC)wParam : BeginPaint( hWnd, &ps );
300 int nOldMode = SetBkMode( hdc, OPAQUE );
301 (btnPaintFunc[btn_type])( hWnd, hdc, ODA_DRAWENTIRE );
302 SetBkMode(hdc, nOldMode); /* reset painting mode */
303 if( !wParam ) EndPaint( hWnd, &ps );
304 }
305 break;
306
307 case WM_KEYDOWN:
308 if (wParam == VK_SPACE)
309 {
310 SendMessageW( hWnd, BM_SETSTATE, TRUE, 0 );
311 set_button_state( hWnd, get_button_state( hWnd ) | BUTTON_BTNPRESSED );
312 }
313 break;
314
315 case WM_LBUTTONDBLCLK:
316 if(style & BS_NOTIFY ||
317 btn_type == BS_RADIOBUTTON ||
318 btn_type == BS_USERBUTTON ||
319 btn_type == BS_OWNERDRAW)
320 {
321 BUTTON_NOTIFY_PARENT(hWnd, BN_DOUBLECLICKED);
322 break;
323 }
324 /* fall through */
325 case WM_LBUTTONDOWN:
326 SetCapture( hWnd );
327 SetFocus( hWnd );
328 set_button_state( hWnd, get_button_state( hWnd ) | BUTTON_BTNPRESSED );
329 SendMessageW( hWnd, BM_SETSTATE, TRUE, 0 );
330 break;
331
332 case WM_KEYUP:
333 if (wParam != VK_SPACE)
334 break;
335 /* fall through */
336 case WM_LBUTTONUP:
337 state = get_button_state( hWnd );
338 if (!(state & BUTTON_BTNPRESSED)) break;
339 state &= BUTTON_NSTATES;
340 set_button_state( hWnd, state );
341 if (!(state & BUTTON_HIGHLIGHTED))
342 {
343 ReleaseCapture();
344 break;
345 }
346 SendMessageW( hWnd, BM_SETSTATE, FALSE, 0 );
347 ReleaseCapture();
348 GetClientRect( hWnd, &rect );
349 if (uMsg == WM_KEYUP || PtInRect( &rect, pt ))
350 {
351 state = get_button_state( hWnd );
352 switch(btn_type)
353 {
354 case BS_AUTOCHECKBOX:
355 SendMessageW( hWnd, BM_SETCHECK, !(state & BUTTON_CHECKED), 0 );
356 break;
357 case BS_AUTORADIOBUTTON:
358 SendMessageW( hWnd, BM_SETCHECK, TRUE, 0 );
359 break;
360 case BS_AUTO3STATE:
361 SendMessageW( hWnd, BM_SETCHECK,
362 (state & BUTTON_3STATE) ? 0 : ((state & 3) + 1), 0 );
363 break;
364 }
365 BUTTON_NOTIFY_PARENT(hWnd, BN_CLICKED);
366 }
367 break;
368
369 case WM_CAPTURECHANGED:
370 TRACE("WM_CAPTURECHANGED %p\n", hWnd);
371 state = get_button_state( hWnd );
372 if (state & BUTTON_BTNPRESSED)
373 {
374 state &= BUTTON_NSTATES;
375 set_button_state( hWnd, state );
376 if (state & BUTTON_HIGHLIGHTED) SendMessageW( hWnd, BM_SETSTATE, FALSE, 0 );
377 }
378 break;
379
380 case WM_MOUSEMOVE:
381 if ((wParam & MK_LBUTTON) && GetCapture() == hWnd)
382 {
383 GetClientRect( hWnd, &rect );
384 SendMessageW( hWnd, BM_SETSTATE, PtInRect(&rect, pt), 0 );
385 }
386 break;
387
388 case WM_SETTEXT:
389 {
390 /* Clear an old text here as Windows does */
391 HDC hdc = GetDC(hWnd);
392 HBRUSH hbrush;
393 RECT client, rc;
394 HWND parent = GetParent(hWnd);
395
396 if (!parent) parent = hWnd;
397 hbrush = (HBRUSH)SendMessageW(parent, WM_CTLCOLORSTATIC,
398 (WPARAM)hdc, (LPARAM)hWnd);
399 if (!hbrush) /* did the app forget to call DefWindowProc ? */
400 hbrush = (HBRUSH)DefWindowProcW(parent, WM_CTLCOLORSTATIC,
401 (WPARAM)hdc, (LPARAM)hWnd);
402
403 GetClientRect(hWnd, &client);
404 rc = client;
405 BUTTON_CalcLabelRect(hWnd, hdc, &rc);
406 /* Clip by client rect bounds */
407 if (rc.right > client.right) rc.right = client.right;
408 if (rc.bottom > client.bottom) rc.bottom = client.bottom;
409 FillRect(hdc, &rc, hbrush);
410 ReleaseDC(hWnd, hdc);
411
412 if (unicode) DefWindowProcW( hWnd, WM_SETTEXT, wParam, lParam );
413 else DefWindowProcA( hWnd, WM_SETTEXT, wParam, lParam );
414 if (btn_type == BS_GROUPBOX) /* Yes, only for BS_GROUPBOX */
415 InvalidateRect( hWnd, NULL, TRUE );
416 else
417 paint_button( hWnd, btn_type, ODA_DRAWENTIRE );
418 return 1; /* success. FIXME: check text length */
419 }
420
421 case WM_SETFONT:
422 set_button_font( hWnd, (HFONT)wParam );
423 if (lParam) InvalidateRect(hWnd, NULL, TRUE);
424 break;
425
426 case WM_GETFONT:
427 return (LRESULT)get_button_font( hWnd );
428
429 case WM_SETFOCUS:
430 TRACE("WM_SETFOCUS %p\n",hWnd);
431 set_button_state( hWnd, get_button_state(hWnd) | BUTTON_HASFOCUS );
432 paint_button( hWnd, btn_type, ODA_FOCUS );
433 if (style & BS_NOTIFY)
434 BUTTON_NOTIFY_PARENT(hWnd, BN_SETFOCUS);
435 break;
436
437 case WM_KILLFOCUS:
438 TRACE("WM_KILLFOCUS %p\n",hWnd);
439 state = get_button_state( hWnd );
440 set_button_state( hWnd, state & ~BUTTON_HASFOCUS );
441 paint_button( hWnd, btn_type, ODA_FOCUS );
442
443 if ((state & BUTTON_BTNPRESSED) && GetCapture() == hWnd)
444 ReleaseCapture();
445 if (style & BS_NOTIFY)
446 BUTTON_NOTIFY_PARENT(hWnd, BN_KILLFOCUS);
447
448 break;
449
450 case WM_SYSCOLORCHANGE:
451 InvalidateRect( hWnd, NULL, FALSE );
452 break;
453
454 case BM_SETSTYLE16:
455 case BM_SETSTYLE:
456 if ((wParam & 0x0f) >= MAX_BTN_TYPE) break;
457 btn_type = wParam & 0x0f;
458 style = (style & ~0x0f) | btn_type;
459 SetWindowLongW( hWnd, GWL_STYLE, style );
460
461 /* Only redraw if lParam flag is set.*/
462 if (lParam)
463 paint_button( hWnd, btn_type, ODA_DRAWENTIRE );
464
465 break;
466
467 case BM_CLICK:
468 SendMessageW( hWnd, WM_LBUTTONDOWN, 0, 0 );
469 SendMessageW( hWnd, WM_LBUTTONUP, 0, 0 );
470 break;
471
472 case BM_SETIMAGE:
473 /* Check that image format matches button style */
474 switch (style & (BS_BITMAP|BS_ICON))
475 {
476 case BS_BITMAP:
477 if (wParam != IMAGE_BITMAP) return 0;
478 break;
479 case BS_ICON:
480 if (wParam != IMAGE_ICON) return 0;
481 break;
482 default:
483 return 0;
484 }
485 oldHbitmap = (HBITMAP)SetWindowLongPtrW( hWnd, HIMAGE_GWL_OFFSET, lParam );
486 InvalidateRect( hWnd, NULL, FALSE );
487 return (LRESULT)oldHbitmap;
488
489 case BM_GETIMAGE:
490 return GetWindowLongPtrW( hWnd, HIMAGE_GWL_OFFSET );
491
492 case BM_GETCHECK16:
493 case BM_GETCHECK:
494 return get_button_state( hWnd ) & 3;
495
496 case BM_SETCHECK16:
497 case BM_SETCHECK:
498 if (wParam > maxCheckState[btn_type]) wParam = maxCheckState[btn_type];
499 state = get_button_state( hWnd );
500 if ((btn_type == BS_RADIOBUTTON) || (btn_type == BS_AUTORADIOBUTTON))
501 {
502 if (wParam) style |= WS_TABSTOP;
503 else style &= ~WS_TABSTOP;
504 SetWindowLongW( hWnd, GWL_STYLE, style );
505 }
506 if ((state & 3) != wParam)
507 {
508 set_button_state( hWnd, (state & ~3) | wParam );
509 paint_button( hWnd, btn_type, ODA_SELECT );
510 }
511 if ((btn_type == BS_AUTORADIOBUTTON) && (wParam == BUTTON_CHECKED) && (style & WS_CHILD))
512 BUTTON_CheckAutoRadioButton( hWnd );
513 break;
514
515 case BM_GETSTATE16:
516 case BM_GETSTATE:
517 return get_button_state( hWnd );
518
519 case BM_SETSTATE16:
520 case BM_SETSTATE:
521 state = get_button_state( hWnd );
522 if (wParam)
523 {
524 if (state & BUTTON_HIGHLIGHTED) break;
525 set_button_state( hWnd, state | BUTTON_HIGHLIGHTED );
526 }
527 else
528 {
529 if (!(state & BUTTON_HIGHLIGHTED)) break;
530 set_button_state( hWnd, state & ~BUTTON_HIGHLIGHTED );
531 }
532 paint_button( hWnd, btn_type, ODA_SELECT );
533 break;
534
535 case WM_NCHITTEST:
536 if(btn_type == BS_GROUPBOX) return HTTRANSPARENT;
537 /* fall through */
538 default:
539 return unicode ? DefWindowProcW(hWnd, uMsg, wParam, lParam) :
540 DefWindowProcA(hWnd, uMsg, wParam, lParam);
541 }
542 return 0;
543 }
544
545 /***********************************************************************
546 * ButtonWndProcW
547 * The button window procedure. This is just a wrapper which locks
548 * the passed HWND and calls the real window procedure (with a WND*
549 * pointer pointing to the locked windowstructure).
550 */
551 static LRESULT WINAPI ButtonWndProcW( HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam )
552 {
553 if (!IsWindow( hWnd )) return 0;
554 return ButtonWndProc_common( hWnd, uMsg, wParam, lParam, TRUE );
555 }
556
557
558 /***********************************************************************
559 * ButtonWndProcA
560 */
561 static LRESULT WINAPI ButtonWndProcA( HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam )
562 {
563 if (!IsWindow( hWnd )) return 0;
564 return ButtonWndProc_common( hWnd, uMsg, wParam, lParam, FALSE );
565 }
566
567
568 /**********************************************************************
569 * Convert button styles to flags used by DrawText.
570 */
571 static UINT BUTTON_BStoDT( DWORD style, DWORD ex_style )
572 {
573 UINT dtStyle = DT_NOCLIP; /* We use SelectClipRgn to limit output */
574
575 /* "Convert" pushlike buttons to pushbuttons */
576 if (style & BS_PUSHLIKE)
577 style &= ~0x0F;
578
579 if (!(style & BS_MULTILINE))
580 dtStyle |= DT_SINGLELINE;
581 else
582 dtStyle |= DT_WORDBREAK;
583
584 switch (style & BS_CENTER)
585 {
586 case BS_LEFT: /* DT_LEFT is 0 */ break;
587 case BS_RIGHT: dtStyle |= DT_RIGHT; break;
588 case BS_CENTER: dtStyle |= DT_CENTER; break;
589 default:
590 /* Pushbutton's text is centered by default */
591 if (get_button_type(style) <= BS_DEFPUSHBUTTON) dtStyle |= DT_CENTER;
592 /* all other flavours have left aligned text */
593 }
594
595 if (ex_style & WS_EX_RIGHT) dtStyle = DT_RIGHT | (dtStyle & ~(DT_LEFT | DT_CENTER));
596
597 /* DrawText ignores vertical alignment for multiline text,
598 * but we use these flags to align label manually.
599 */
600 if (get_button_type(style) != BS_GROUPBOX)
601 {
602 switch (style & BS_VCENTER)
603 {
604 case BS_TOP: /* DT_TOP is 0 */ break;
605 case BS_BOTTOM: dtStyle |= DT_BOTTOM; break;
606 case BS_VCENTER: /* fall through */
607 default: dtStyle |= DT_VCENTER; break;
608 }
609 }
610 else
611 /* GroupBox's text is always single line and is top aligned. */
612 dtStyle |= DT_SINGLELINE;
613
614 return dtStyle;
615 }
616
617 /**********************************************************************
618 * BUTTON_CalcLabelRect
619 *
620 * Calculates label's rectangle depending on button style.
621 *
622 * Returns flags to be passed to DrawText.
623 * Calculated rectangle doesn't take into account button state
624 * (pushed, etc.). If there is nothing to draw (no text/image) output
625 * rectangle is empty, and return value is (UINT)-1.
626 */
627 static UINT BUTTON_CalcLabelRect(HWND hwnd, HDC hdc, RECT *rc)
628 {
629 LONG style = GetWindowLongW( hwnd, GWL_STYLE );
630 LONG ex_style = GetWindowLongW( hwnd, GWL_EXSTYLE );
631 WCHAR *text;
632 ICONINFO iconInfo;
633 BITMAP bm;
634 UINT dtStyle = BUTTON_BStoDT( style, ex_style );
635 RECT r = *rc;
636 INT n;
637
638 /* Calculate label rectangle according to label type */
639 switch (style & (BS_ICON|BS_BITMAP))
640 {
641 case BS_TEXT:
642 if (!(text = get_button_text( hwnd ))) goto empty_rect;
643 if (!text[0])
644 {
645 HeapFree( GetProcessHeap(), 0, text );
646 goto empty_rect;
647 }
648 DrawTextW(hdc, text, -1, &r, dtStyle | DT_CALCRECT);
649 HeapFree( GetProcessHeap(), 0, text );
650 break;
651
652 case BS_ICON:
653 if (!GetIconInfo((HICON)GetWindowLongPtrW( hwnd, HIMAGE_GWL_OFFSET ), &iconInfo))
654 goto empty_rect;
655
656 GetObjectW (iconInfo.hbmColor, sizeof(BITMAP), &bm);
657
658 r.right = r.left + bm.bmWidth;
659 r.bottom = r.top + bm.bmHeight;
660
661 DeleteObject(iconInfo.hbmColor);
662 DeleteObject(iconInfo.hbmMask);
663 break;
664
665 case BS_BITMAP:
666 if (!GetObjectW( (HANDLE)GetWindowLongPtrW( hwnd, HIMAGE_GWL_OFFSET ), sizeof(BITMAP), &bm))
667 goto empty_rect;
668
669 r.right = r.left + bm.bmWidth;
670 r.bottom = r.top + bm.bmHeight;
671 break;
672
673 default:
674 empty_rect:
675 rc->right = r.left;
676 rc->bottom = r.top;
677 return (UINT)-1;
678 }
679
680 /* Position label inside bounding rectangle according to
681 * alignment flags. (calculated rect is always left-top aligned).
682 * If label is aligned to any side - shift label in opposite
683 * direction to leave extra space for focus rectangle.
684 */
685 switch (dtStyle & (DT_CENTER|DT_RIGHT))
686 {
687 case DT_LEFT: r.left++; r.right++; break;
688 case DT_CENTER: n = r.right - r.left;
689 r.left = rc->left + ((rc->right - rc->left) - n) / 2;
690 r.right = r.left + n; break;
691 case DT_RIGHT: n = r.right - r.left;
692 r.right = rc->right - 1;
693 r.left = r.right - n;
694 break;
695 }
696
697 switch (dtStyle & (DT_VCENTER|DT_BOTTOM))
698 {
699 case DT_TOP: r.top++; r.bottom++; break;
700 case DT_VCENTER: n = r.bottom - r.top;
701 r.top = rc->top + ((rc->bottom - rc->top) - n) / 2;
702 r.bottom = r.top + n; break;
703 case DT_BOTTOM: n = r.bottom - r.top;
704 r.bottom = rc->bottom - 1;
705 r.top = r.bottom - n;
706 break;
707 }
708
709 *rc = r;
710 return dtStyle;
711 }
712
713
714 /**********************************************************************
715 * BUTTON_DrawTextCallback
716 *
717 * Callback function used by DrawStateW function.
718 */
719 static BOOL CALLBACK BUTTON_DrawTextCallback(HDC hdc, LPARAM lp, WPARAM wp, int cx, int cy)
720 {
721 RECT rc;
722 rc.left = 0;
723 rc.top = 0;
724 rc.right = cx;
725 rc.bottom = cy;
726
727 DrawTextW(hdc, (LPCWSTR)lp, -1, &rc, (UINT)wp);
728 return TRUE;
729 }
730
731
732 /**********************************************************************
733 * BUTTON_DrawLabel
734 *
735 * Common function for drawing button label.
736 */
737 static void BUTTON_DrawLabel(HWND hwnd, HDC hdc, UINT dtFlags, const RECT *rc)
738 {
739 DRAWSTATEPROC lpOutputProc = NULL;
740 LPARAM lp;
741 WPARAM wp = 0;
742 HBRUSH hbr = 0;
743 UINT flags = IsWindowEnabled(hwnd) ? DSS_NORMAL : DSS_DISABLED;
744 LONG state = get_button_state( hwnd );
745 LONG style = GetWindowLongW( hwnd, GWL_STYLE );
746 WCHAR *text = NULL;
747
748 /* FIXME: To draw disabled label in Win31 look-and-feel, we probably
749 * must use DSS_MONO flag and COLOR_GRAYTEXT brush (or maybe DSS_UNION).
750 * I don't have Win31 on hand to verify that, so I leave it as is.
751 */
752
753 if ((style & BS_PUSHLIKE) && (state & BUTTON_3STATE))
754 {
755 hbr = GetSysColorBrush(COLOR_GRAYTEXT);
756 flags |= DSS_MONO;
757 }
758
759 switch (style & (BS_ICON|BS_BITMAP))
760 {
761 case BS_TEXT:
762 /* DST_COMPLEX -- is 0 */
763 lpOutputProc = BUTTON_DrawTextCallback;
764 if (!(text = get_button_text( hwnd ))) return;
765 lp = (LPARAM)text;
766 wp = (WPARAM)dtFlags;
767 break;
768
769 case BS_ICON:
770 flags |= DST_ICON;
771 lp = GetWindowLongPtrW( hwnd, HIMAGE_GWL_OFFSET );
772 break;
773
774 case BS_BITMAP:
775 flags |= DST_BITMAP;
776 lp = GetWindowLongPtrW( hwnd, HIMAGE_GWL_OFFSET );
777 break;
778
779 default:
780 return;
781 }
782
783 DrawStateW(hdc, hbr, lpOutputProc, lp, wp, rc->left, rc->top,
784 rc->right - rc->left, rc->bottom - rc->top, flags);
785 HeapFree( GetProcessHeap(), 0, text );
786 }
787
788 /**********************************************************************
789 * Push Button Functions
790 */
791 static void PB_Paint( HWND hwnd, HDC hDC, UINT action )
792 {
793 RECT rc, focus_rect, r;
794 UINT dtFlags, uState;
795 HPEN hOldPen;
796 HBRUSH hOldBrush;
797 INT oldBkMode;
798 COLORREF oldTxtColor;
799 HFONT hFont;
800 LONG state = get_button_state( hwnd );
801 LONG style = GetWindowLongW( hwnd, GWL_STYLE );
802 BOOL pushedState = (state & BUTTON_HIGHLIGHTED);
803 HWND parent;
804
805 GetClientRect( hwnd, &rc );
806
807 /* Send WM_CTLCOLOR to allow changing the font (the colors are fixed) */
808 if ((hFont = get_button_font( hwnd ))) SelectObject( hDC, hFont );
809 parent = GetParent(hwnd);
810 if (!parent) parent = hwnd;
811 SendMessageW( parent, WM_CTLCOLORBTN, (WPARAM)hDC, (LPARAM)hwnd );
812
813 setup_clipping( hwnd, hDC );
814
815 hOldPen = SelectObject(hDC, SYSCOLOR_GetPen(COLOR_WINDOWFRAME));
816 hOldBrush = SelectObject(hDC,GetSysColorBrush(COLOR_BTNFACE));
817 oldBkMode = SetBkMode(hDC, TRANSPARENT);
818
819 if (get_button_type(style) == BS_DEFPUSHBUTTON)
820 {
821 Rectangle(hDC, rc.left, rc.top, rc.right, rc.bottom);
822 InflateRect( &rc, -1, -1 );
823 }
824
825 uState = DFCS_BUTTONPUSH | DFCS_ADJUSTRECT;
826
827 if (style & BS_FLAT)
828 uState |= DFCS_MONO;
829 else if (pushedState)
830 {
831 if (get_button_type(style) == BS_DEFPUSHBUTTON )
832 uState |= DFCS_FLAT;
833 else
834 uState |= DFCS_PUSHED;
835 }
836
837 if (state & (BUTTON_CHECKED | BUTTON_3STATE))
838 uState |= DFCS_CHECKED;
839
840 DrawFrameControl( hDC, &rc, DFC_BUTTON, uState );
841
842 focus_rect = rc;
843
844 /* draw button label */
845 r = rc;
846 dtFlags = BUTTON_CalcLabelRect(hwnd, hDC, &r);
847
848 if (dtFlags == (UINT)-1L)
849 goto cleanup;
850
851 if (pushedState)
852 OffsetRect(&r, 1, 1);
853
854 IntersectClipRect(hDC, rc.left, rc.top, rc.right, rc.bottom);
855
856 oldTxtColor = SetTextColor( hDC, GetSysColor(COLOR_BTNTEXT) );
857
858 BUTTON_DrawLabel(hwnd, hDC, dtFlags, &r);
859
860 SetTextColor( hDC, oldTxtColor );
861
862 if (state & BUTTON_HASFOCUS)
863 {
864 InflateRect( &focus_rect, -1, -1 );
865 IntersectRect(&focus_rect, &focus_rect, &rc);
866 DrawFocusRect( hDC, &focus_rect );
867 }
868
869 cleanup:
870 SelectObject( hDC, hOldPen );
871 SelectObject( hDC, hOldBrush );
872 SetBkMode(hDC, oldBkMode);
873 }
874
875 /**********************************************************************
876 * Check Box & Radio Button Functions
877 */
878
879 static void CB_Paint( HWND hwnd, HDC hDC, UINT action )
880 {
881 RECT rbox, rtext, client;
882 HBRUSH hBrush;
883 int delta;
884 UINT dtFlags;
885 HFONT hFont;
886 LONG state = get_button_state( hwnd );
887 LONG style = GetWindowLongW( hwnd, GWL_STYLE );
888 HWND parent;
889
890 if (style & BS_PUSHLIKE)
891 {
892 PB_Paint( hwnd, hDC, action );
893 return;
894 }
895
896 GetClientRect(hwnd, &client);
897 rbox = rtext = client;
898
899 if ((hFont = get_button_font( hwnd ))) SelectObject( hDC, hFont );
900
901 parent = GetParent(hwnd);
902 if (!parent) parent = hwnd;
903 hBrush = (HBRUSH)SendMessageW(parent, WM_CTLCOLORSTATIC,
904 (WPARAM)hDC, (LPARAM)hwnd);
905 if (!hBrush) /* did the app forget to call defwindowproc ? */
906 hBrush = (HBRUSH)DefWindowProcW(parent, WM_CTLCOLORSTATIC,
907 (WPARAM)hDC, (LPARAM)hwnd );
908 setup_clipping( hwnd, hDC );
909
910 if (style & BS_LEFTTEXT)
911 {
912 /* magic +4 is what CTL3D expects */
913
914 rtext.right -= checkBoxWidth + 4;
915 rbox.left = rbox.right - checkBoxWidth;
916 }
917 else
918 {
919 rtext.left += checkBoxWidth + 4;
920 rbox.right = checkBoxWidth;
921 }
922
923 /* Since WM_ERASEBKGND does nothing, first prepare background */
924 if (action == ODA_SELECT) FillRect( hDC, &rbox, hBrush );
925 if (action == ODA_DRAWENTIRE) FillRect( hDC, &client, hBrush );
926
927 /* Draw label */
928 client = rtext;
929 dtFlags = BUTTON_CalcLabelRect(hwnd, hDC, &rtext);
930
931 /* Only adjust rbox when rtext is valid */
932 if (dtFlags != (UINT)-1L)
933 {
934 rbox.top = rtext.top;
935 rbox.bottom = rtext.bottom;
936 }
937
938 /* Draw the check-box bitmap */
939 if (action == ODA_DRAWENTIRE || action == ODA_SELECT)
940 {
941 UINT flags;
942
943 if ((get_button_type(style) == BS_RADIOBUTTON) ||
944 (get_button_type(style) == BS_AUTORADIOBUTTON)) flags = DFCS_BUTTONRADIO;
945 else if (state & BUTTON_3STATE) flags = DFCS_BUTTON3STATE;
946 else flags = DFCS_BUTTONCHECK;
947
948 if (state & (BUTTON_CHECKED | BUTTON_3STATE)) flags |= DFCS_CHECKED;
949 if (state & BUTTON_HIGHLIGHTED) flags |= DFCS_PUSHED;
950
951 if (style & WS_DISABLED) flags |= DFCS_INACTIVE;
952
953 /* rbox must have the correct height */
954 delta = rbox.bottom - rbox.top - checkBoxHeight;
955
956 if (style & BS_TOP) {
957 if (delta > 0) {
958 rbox.bottom = rbox.top + checkBoxHeight;
959 } else {
960 rbox.top -= -delta/2 + 1;
961 rbox.bottom = rbox.top + checkBoxHeight;
962 }
963 } else if (style & BS_BOTTOM) {
964 if (delta > 0) {
965 rbox.top = rbox.bottom - checkBoxHeight;
966 } else {
967 rbox.bottom += -delta/2 + 1;
968 rbox.top = rbox.bottom - checkBoxHeight;
969 }
970 } else { /* Default */
971 if (delta > 0) {
972 int ofs = (delta / 2);
973 rbox.bottom -= ofs + 1;
974 rbox.top = rbox.bottom - checkBoxHeight;
975 } else if (delta < 0) {
976 int ofs = (-delta / 2);
977 rbox.top -= ofs + 1;
978 rbox.bottom = rbox.top + checkBoxHeight;
979 }
980 }
981
982 DrawFrameControl( hDC, &rbox, DFC_BUTTON, flags );
983 }
984
985 if (dtFlags == (UINT)-1L) /* Noting to draw */
986 return;
987
988 if (action == ODA_DRAWENTIRE)
989 BUTTON_DrawLabel(hwnd, hDC, dtFlags, &rtext);
990
991 /* ... and focus */
992 if ((action == ODA_FOCUS) ||
993 ((action == ODA_DRAWENTIRE) && (state & BUTTON_HASFOCUS)))
994 {
995 rtext.left--;
996 rtext.right++;
997 IntersectRect(&rtext, &rtext, &client);
998 DrawFocusRect( hDC, &rtext );
999 }
1000 }
1001
1002
1003 /**********************************************************************
1004 * BUTTON_CheckAutoRadioButton
1005 *
1006 * hwnd is checked, uncheck every other auto radio button in group
1007 */
1008 static void BUTTON_CheckAutoRadioButton( HWND hwnd )
1009 {
1010 HWND parent, sibling, start;
1011
1012 parent = GetParent(hwnd);
1013 /* make sure that starting control is not disabled or invisible */
1014 start = sibling = GetNextDlgGroupItem( parent, hwnd, TRUE );
1015 do
1016 {
1017 if (!sibling) break;
1018 if ((hwnd != sibling) &&
1019 ((GetWindowLongW( sibling, GWL_STYLE) & 0x0f) == BS_AUTORADIOBUTTON))
1020 SendMessageW( sibling, BM_SETCHECK, BUTTON_UNCHECKED, 0 );
1021 sibling = GetNextDlgGroupItem( parent, sibling, FALSE );
1022 } while (sibling != start);
1023 }
1024
1025
1026 /**********************************************************************
1027 * Group Box Functions
1028 */
1029
1030 static void GB_Paint( HWND hwnd, HDC hDC, UINT action )
1031 {
1032 RECT rc, rcFrame;
1033 HBRUSH hbr;
1034 HFONT hFont;
1035 UINT dtFlags;
1036 TEXTMETRICW tm;
1037 LONG style = GetWindowLongW( hwnd, GWL_STYLE );
1038 HWND parent;
1039
1040 if ((hFont = get_button_font( hwnd ))) SelectObject( hDC, hFont );
1041 /* GroupBox acts like static control, so it sends CTLCOLORSTATIC */
1042 parent = GetParent(hwnd);
1043 if (!parent) parent = hwnd;
1044 hbr = (HBRUSH)SendMessageW(parent, WM_CTLCOLORSTATIC, (WPARAM)hDC, (LPARAM)hwnd);
1045 if (!hbr) /* did the app forget to call defwindowproc ? */
1046 hbr = (HBRUSH)DefWindowProcW(parent, WM_CTLCOLORSTATIC,
1047 (WPARAM)hDC, (LPARAM)hwnd);
1048 setup_clipping( hwnd, hDC );
1049
1050 GetClientRect( hwnd, &rc);
1051 rcFrame = rc;
1052
1053 GetTextMetricsW (hDC, &tm);
1054 rcFrame.top += (tm.tmHeight / 2) - 1;
1055 DrawEdge (hDC, &rcFrame, EDGE_ETCHED, BF_RECT | ((style & BS_FLAT) ? BF_FLAT : 0));
1056
1057 InflateRect(&rc, -7, 1);
1058 dtFlags = BUTTON_CalcLabelRect(hwnd, hDC, &rc);
1059
1060 if (dtFlags == (UINT)-1L)
1061 return;
1062
1063 /* Because buttons have CS_PARENTDC class style, there is a chance
1064 * that label will be drawn out of client rect.
1065 * But Windows doesn't clip label's rect, so do I.
1066 */
1067
1068 /* There is 1-pixel margin at the left, right, and bottom */
1069 rc.left--; rc.right++; rc.bottom++;
1070 FillRect(hDC, &rc, hbr);
1071 rc.left++; rc.right--; rc.bottom--;
1072
1073 BUTTON_DrawLabel(hwnd, hDC, dtFlags, &rc);
1074 }
1075
1076
1077 /**********************************************************************
1078 * User Button Functions
1079 */
1080
1081 static void UB_Paint( HWND hwnd, HDC hDC, UINT action )
1082 {
1083 RECT rc;
1084 HBRUSH hBrush;
1085 HFONT hFont;
1086 LONG state = get_button_state( hwnd );
1087 HWND parent;
1088
1089 if (action == ODA_SELECT) return;
1090
1091 GetClientRect( hwnd, &rc);
1092
1093 if ((hFont = get_button_font( hwnd ))) SelectObject( hDC, hFont );
1094
1095 parent = GetParent(hwnd);
1096 if (!parent) parent = hwnd;
1097 hBrush = (HBRUSH)SendMessageW(parent, WM_CTLCOLORBTN, (WPARAM)hDC, (LPARAM)hwnd);
1098 if (!hBrush) /* did the app forget to call defwindowproc ? */
1099 hBrush = (HBRUSH)DefWindowProcW(parent, WM_CTLCOLORBTN,
1100 (WPARAM)hDC, (LPARAM)hwnd);
1101
1102 FillRect( hDC, &rc, hBrush );
1103 if ((action == ODA_FOCUS) ||
1104 ((action == ODA_DRAWENTIRE) && (state & BUTTON_HASFOCUS)))
1105 DrawFocusRect( hDC, &rc );
1106 }
1107
1108
1109 /**********************************************************************
1110 * Ownerdrawn Button Functions
1111 */
1112
1113 static void OB_Paint( HWND hwnd, HDC hDC, UINT action )
1114 {
1115 LONG state = get_button_state( hwnd );
1116 DRAWITEMSTRUCT dis;
1117 LONG_PTR id = GetWindowLongPtrW( hwnd, GWLP_ID );
1118 HWND parent;
1119 HFONT hFont, hPrevFont = 0;
1120
1121 dis.CtlType = ODT_BUTTON;
1122 dis.CtlID = id;
1123 dis.itemID = 0;
1124 dis.itemAction = action;
1125 dis.itemState = ((state & BUTTON_HASFOCUS) ? ODS_FOCUS : 0) |
1126 ((state & BUTTON_HIGHLIGHTED) ? ODS_SELECTED : 0) |
1127 (IsWindowEnabled(hwnd) ? 0: ODS_DISABLED);
1128 dis.hwndItem = hwnd;
1129 dis.hDC = hDC;
1130 dis.itemData = 0;
1131 GetClientRect( hwnd, &dis.rcItem );
1132
1133 if ((hFont = get_button_font( hwnd ))) hPrevFont = SelectObject( hDC, hFont );
1134 parent = GetParent(hwnd);
1135 if (!parent) parent = hwnd;
1136 SendMessageW( parent, WM_CTLCOLORBTN, (WPARAM)hDC, (LPARAM)hwnd );
1137
1138 setup_clipping( hwnd, hDC );
1139
1140 SendMessageW( GetParent(hwnd), WM_DRAWITEM, id, (LPARAM)&dis );
1141 if (hPrevFont) SelectObject(hDC, hPrevFont);
1142 }
1143
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