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[wine/multimedia.git] / controls / button.c
blob0826dc13f8c544ba7cafbd933777941ada2ac39d
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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 */
21
22 #include <string.h>
23 #include <stdlib.h>
24
25 #include "winbase.h"
26 #include "windef.h"
27 #include "wingdi.h"
28 #include "wine/winuser16.h"
29 #include "controls.h"
30 #include "user.h"
31
32 /* GetWindowLong offsets for window extra information */
33 #define STATE_GWL_OFFSET 0
34 #define HFONT_GWL_OFFSET (sizeof(LONG))
35 #define HIMAGE_GWL_OFFSET (2*sizeof(LONG))
36 #define NB_EXTRA_BYTES (3*sizeof(LONG))
37
38 /* Button state values */
39 #define BUTTON_UNCHECKED 0x00
40 #define BUTTON_CHECKED 0x01
41 #define BUTTON_3STATE 0x02
42 #define BUTTON_HIGHLIGHTED 0x04
43 #define BUTTON_HASFOCUS 0x08
44 #define BUTTON_NSTATES 0x0F
45 /* undocumented flags */
46 #define BUTTON_BTNPRESSED 0x40
47 #define BUTTON_UNKNOWN2 0x20
48 #define BUTTON_UNKNOWN3 0x10
49
50 static UINT BUTTON_CalcLabelRect( HWND hwnd, HDC hdc, RECT *rc );
51 static void PB_Paint( HWND hwnd, HDC hDC, UINT action );
52 static void CB_Paint( HWND hwnd, HDC hDC, UINT action );
53 static void GB_Paint( HWND hwnd, HDC hDC, UINT action );
54 static void UB_Paint( HWND hwnd, HDC hDC, UINT action );
55 static void OB_Paint( HWND hwnd, HDC hDC, UINT action );
56 static void BUTTON_CheckAutoRadioButton( HWND hwnd );
57 static LRESULT WINAPI ButtonWndProcA( HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam );
58 static LRESULT WINAPI ButtonWndProcW( HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam );
59
60 #define MAX_BTN_TYPE 12
61
62 static const WORD maxCheckState[MAX_BTN_TYPE] =
63 {
64 BUTTON_UNCHECKED, /* BS_PUSHBUTTON */
65 BUTTON_UNCHECKED, /* BS_DEFPUSHBUTTON */
66 BUTTON_CHECKED, /* BS_CHECKBOX */
67 BUTTON_CHECKED, /* BS_AUTOCHECKBOX */
68 BUTTON_CHECKED, /* BS_RADIOBUTTON */
69 BUTTON_3STATE, /* BS_3STATE */
70 BUTTON_3STATE, /* BS_AUTO3STATE */
71 BUTTON_UNCHECKED, /* BS_GROUPBOX */
72 BUTTON_UNCHECKED, /* BS_USERBUTTON */
73 BUTTON_CHECKED, /* BS_AUTORADIOBUTTON */
74 BUTTON_UNCHECKED, /* Not defined */
75 BUTTON_UNCHECKED /* BS_OWNERDRAW */
76 };
77
78 typedef void (*pfPaint)( HWND hwnd, HDC hdc, UINT action );
79
80 static const pfPaint btnPaintFunc[MAX_BTN_TYPE] =
81 {
82 PB_Paint, /* BS_PUSHBUTTON */
83 PB_Paint, /* BS_DEFPUSHBUTTON */
84 CB_Paint, /* BS_CHECKBOX */
85 CB_Paint, /* BS_AUTOCHECKBOX */
86 CB_Paint, /* BS_RADIOBUTTON */
87 CB_Paint, /* BS_3STATE */
88 CB_Paint, /* BS_AUTO3STATE */
89 GB_Paint, /* BS_GROUPBOX */
90 UB_Paint, /* BS_USERBUTTON */
91 CB_Paint, /* BS_AUTORADIOBUTTON */
92 NULL, /* Not defined */
93 OB_Paint /* BS_OWNERDRAW */
94 };
95
96 static HBITMAP hbitmapCheckBoxes = 0;
97 static WORD checkBoxWidth = 0, checkBoxHeight = 0;
98
99
100 /*********************************************************************
101 * button class descriptor
102 */
103 const struct builtin_class_descr BUTTON_builtin_class =
104 {
105 "Button", /* name */
106 CS_GLOBALCLASS | CS_DBLCLKS | CS_VREDRAW | CS_HREDRAW | CS_PARENTDC, /* style */
107 ButtonWndProcA, /* procA */
108 ButtonWndProcW, /* procW */
109 NB_EXTRA_BYTES, /* extra */
110 IDC_ARROWA, /* cursor */
111 0 /* brush */
112 };
113
114
115 inline static LONG get_button_state( HWND hwnd )
116 {
117 return GetWindowLongA( hwnd, STATE_GWL_OFFSET );
118 }
119
120 inline static void set_button_state( HWND hwnd, LONG state )
121 {
122 SetWindowLongA( hwnd, STATE_GWL_OFFSET, state );
123 }
124
125 inline static HFONT get_button_font( HWND hwnd )
126 {
127 return GetWindowLongA( hwnd, HFONT_GWL_OFFSET );
128 }
129
130 inline static void set_button_font( HWND hwnd, HFONT font )
131 {
132 SetWindowLongA( hwnd, HFONT_GWL_OFFSET, font );
133 }
134
135 inline static UINT get_button_type( LONG window_style )
136 {
137 return (window_style & 0x0f);
138 }
139
140 /* paint a button of any type */
141 inline static void paint_button( HWND hwnd, LONG style, UINT action )
142 {
143 if (btnPaintFunc[style] && IsWindowVisible(hwnd))
144 {
145 HDC hdc = GetDC( hwnd );
146 btnPaintFunc[style]( hwnd, hdc, action );
147 ReleaseDC( hwnd, hdc );
148 }
149 }
150
151 /* retrieve the button text; returned buffer must be freed by caller */
152 inline static WCHAR *get_button_text( HWND hwnd )
153 {
154 INT len = GetWindowTextLengthW( hwnd );
155 WCHAR *buffer = HeapAlloc( GetProcessHeap(), 0, (len + 1) * sizeof(WCHAR) );
156 if (buffer) GetWindowTextW( hwnd, buffer, len + 1 );
157 return buffer;
158 }
159
160 /***********************************************************************
161 * ButtonWndProc_common
162 */
163 static LRESULT WINAPI ButtonWndProc_common(HWND hWnd, UINT uMsg,
164 WPARAM wParam, LPARAM lParam, BOOL unicode )
165 {
166 RECT rect;
167 POINT pt;
168 LONG style = GetWindowLongA( hWnd, GWL_STYLE );
169 UINT btn_type = get_button_type( style );
170 LONG state;
171 HANDLE oldHbitmap;
172
173 pt.x = LOWORD(lParam);
174 pt.y = HIWORD(lParam);
175
176 switch (uMsg)
177 {
178 case WM_GETDLGCODE:
179 switch(btn_type)
180 {
181 case BS_PUSHBUTTON: return DLGC_BUTTON | DLGC_UNDEFPUSHBUTTON;
182 case BS_DEFPUSHBUTTON: return DLGC_BUTTON | DLGC_DEFPUSHBUTTON;
183 case BS_RADIOBUTTON:
184 case BS_AUTORADIOBUTTON: return DLGC_BUTTON | DLGC_RADIOBUTTON;
185 default: return DLGC_BUTTON;
186 }
187
188 case WM_ENABLE:
189 paint_button( hWnd, btn_type, ODA_DRAWENTIRE );
190 break;
191
192 case WM_CREATE:
193 if (!hbitmapCheckBoxes)
194 {
195 BITMAP bmp;
196 hbitmapCheckBoxes = LoadBitmapW(0, MAKEINTRESOURCEW(OBM_CHECKBOXES));
197 GetObjectW( hbitmapCheckBoxes, sizeof(bmp), &bmp );
198 checkBoxWidth = bmp.bmWidth / 4;
199 checkBoxHeight = bmp.bmHeight / 3;
200 }
201 if (btn_type < 0L || btn_type >= MAX_BTN_TYPE)
202 return -1; /* abort */
203 set_button_state( hWnd, BUTTON_UNCHECKED );
204 return 0;
205
206 case WM_ERASEBKGND:
207 return 1;
208
209 case WM_PAINT:
210 if (btnPaintFunc[btn_type])
211 {
212 PAINTSTRUCT ps;
213 HDC hdc = wParam ? (HDC)wParam : BeginPaint( hWnd, &ps );
214 int nOldMode = SetBkMode( hdc, OPAQUE );
215 (btnPaintFunc[btn_type])( hWnd, hdc, ODA_DRAWENTIRE );
216 SetBkMode(hdc, nOldMode); /* reset painting mode */
217 if( !wParam ) EndPaint( hWnd, &ps );
218 }
219 break;
220
221 case WM_KEYDOWN:
222 if (wParam == VK_SPACE)
223 {
224 SendMessageW( hWnd, BM_SETSTATE, TRUE, 0 );
225 set_button_state( hWnd, get_button_state( hWnd ) | BUTTON_BTNPRESSED );
226 }
227 break;
228
229 case WM_LBUTTONDBLCLK:
230 if(style & BS_NOTIFY ||
231 btn_type == BS_RADIOBUTTON ||
232 btn_type == BS_USERBUTTON ||
233 btn_type == BS_OWNERDRAW)
234 {
235 SendMessageW( GetParent(hWnd), WM_COMMAND,
236 MAKEWPARAM( GetWindowLongA(hWnd,GWL_ID), BN_DOUBLECLICKED ),
237 (LPARAM)hWnd);
238 break;
239 }
240 /* fall through */
241 case WM_LBUTTONDOWN:
242 SetCapture( hWnd );
243 SetFocus( hWnd );
244 SendMessageW( hWnd, BM_SETSTATE, TRUE, 0 );
245 set_button_state( hWnd, get_button_state( hWnd ) | BUTTON_BTNPRESSED );
246 break;
247
248 case WM_KEYUP:
249 if (wParam != VK_SPACE)
250 break;
251 /* fall through */
252 case WM_LBUTTONUP:
253 state = get_button_state( hWnd );
254 if (!(state & BUTTON_BTNPRESSED)) break;
255 state &= BUTTON_NSTATES;
256 set_button_state( hWnd, state );
257 if (!(state & BUTTON_HIGHLIGHTED))
258 {
259 ReleaseCapture();
260 break;
261 }
262 SendMessageW( hWnd, BM_SETSTATE, FALSE, 0 );
263 ReleaseCapture();
264 GetClientRect( hWnd, &rect );
265 if (uMsg == WM_KEYUP || PtInRect( &rect, pt ))
266 {
267 state = get_button_state( hWnd );
268 switch(btn_type)
269 {
270 case BS_AUTOCHECKBOX:
271 SendMessageW( hWnd, BM_SETCHECK, !(state & BUTTON_CHECKED), 0 );
272 break;
273 case BS_AUTORADIOBUTTON:
274 SendMessageW( hWnd, BM_SETCHECK, TRUE, 0 );
275 break;
276 case BS_AUTO3STATE:
277 SendMessageW( hWnd, BM_SETCHECK,
278 (state & BUTTON_3STATE) ? 0 : ((state & 3) + 1), 0 );
279 break;
280 }
281 SendMessageW( GetParent(hWnd), WM_COMMAND,
282 MAKEWPARAM( GetWindowLongA(hWnd,GWL_ID), BN_CLICKED ), (LPARAM)hWnd);
283 }
284 break;
285
286 case WM_CAPTURECHANGED:
287 state = get_button_state( hWnd );
288 if (state & BUTTON_BTNPRESSED)
289 {
290 state &= BUTTON_NSTATES;
291 set_button_state( hWnd, state );
292 if (state & BUTTON_HIGHLIGHTED) SendMessageW( hWnd, BM_SETSTATE, FALSE, 0 );
293 }
294 break;
295
296 case WM_MOUSEMOVE:
297 if ((wParam & MK_LBUTTON) && GetCapture() == hWnd)
298 {
299 GetClientRect( hWnd, &rect );
300 SendMessageW( hWnd, BM_SETSTATE, PtInRect(&rect, pt), 0 );
301 }
302 break;
303
304 case WM_SETTEXT:
305 {
306 /* Clear an old text here as Windows does */
307 HDC hdc = GetDC(hWnd);
308 HBRUSH hbrush;
309 RECT client, rc;
310
311 hbrush = SendMessageW(GetParent(hWnd), WM_CTLCOLORSTATIC, hdc, (LPARAM)hWnd);
312 if (!hbrush) /* did the app forget to call DefWindowProc ? */
313 hbrush = DefWindowProcW(GetParent(hWnd), WM_CTLCOLORSTATIC, hdc, (LPARAM)hWnd);
314
315 GetClientRect(hWnd, &client);
316 rc = client;
317 BUTTON_CalcLabelRect(hWnd, hdc, &rc);
318 /* Clip by client rect bounds */
319 if (rc.right > client.right) rc.right = client.right;
320 if (rc.bottom > client.bottom) rc.bottom = client.bottom;
321 FillRect(hdc, &rc, hbrush);
322 ReleaseDC(hWnd, hdc);
323
324 if (unicode) DefWindowProcW( hWnd, WM_SETTEXT, wParam, lParam );
325 else DefWindowProcA( hWnd, WM_SETTEXT, wParam, lParam );
326 if (btn_type == BS_GROUPBOX) /* Yes, only for BS_GROUPBOX */
327 InvalidateRect( hWnd, NULL, TRUE );
328 else
329 paint_button( hWnd, btn_type, ODA_DRAWENTIRE );
330 return 1; /* success. FIXME: check text length */
331 }
332
333 case WM_SETFONT:
334 set_button_font( hWnd, wParam );
335 if (lParam) paint_button( hWnd, btn_type, ODA_DRAWENTIRE );
336 break;
337
338 case WM_GETFONT:
339 return get_button_font( hWnd );
340
341 case WM_SETFOCUS:
342 if ((btn_type == BS_RADIOBUTTON || btn_type == BS_AUTORADIOBUTTON) && (GetCapture() != hWnd) &&
343 !(SendMessageW(hWnd, BM_GETCHECK, 0, 0) & BST_CHECKED))
344 {
345 /* The notification is sent when the button (BS_AUTORADIOBUTTON)
346 is unchecked and the focus was not given by a mouse click. */
347 if (btn_type == BS_AUTORADIOBUTTON)
348 SendMessageW( hWnd, BM_SETCHECK, BUTTON_CHECKED, 0 );
349 SendMessageW( GetParent(hWnd), WM_COMMAND,
350 MAKEWPARAM( GetWindowLongA(hWnd,GWL_ID), BN_CLICKED ), (LPARAM)hWnd);
351 }
352 set_button_state( hWnd, get_button_state(hWnd) | BUTTON_HASFOCUS );
353 paint_button( hWnd, btn_type, ODA_FOCUS );
354 break;
355
356 case WM_KILLFOCUS:
357 set_button_state( hWnd, get_button_state(hWnd) & ~BUTTON_HASFOCUS );
358 paint_button( hWnd, btn_type, ODA_FOCUS );
359 InvalidateRect( hWnd, NULL, TRUE );
360 break;
361
362 case WM_SYSCOLORCHANGE:
363 InvalidateRect( hWnd, NULL, FALSE );
364 break;
365
366 case BM_SETSTYLE16:
367 case BM_SETSTYLE:
368 if ((wParam & 0x0f) >= MAX_BTN_TYPE) break;
369 btn_type = wParam & 0x0f;
370 style = (style & ~0x0f) | btn_type;
371 SetWindowLongA( hWnd, GWL_STYLE, style );
372
373 /* Only redraw if lParam flag is set.*/
374 if (lParam)
375 paint_button( hWnd, btn_type, ODA_DRAWENTIRE );
376
377 break;
378
379 case BM_CLICK:
380 SendMessageW( hWnd, WM_LBUTTONDOWN, 0, 0 );
381 SendMessageW( hWnd, WM_LBUTTONUP, 0, 0 );
382 break;
383
384 case BM_SETIMAGE:
385 /* Check that image format matches button style */
386 switch (style & (BS_BITMAP|BS_ICON))
387 {
388 case BS_BITMAP:
389 if (wParam != IMAGE_BITMAP) return 0;
390 break;
391 case BS_ICON:
392 if (wParam != IMAGE_ICON) return 0;
393 break;
394 default:
395 return 0;
396 }
397 oldHbitmap = SetWindowLongA( hWnd, HIMAGE_GWL_OFFSET, lParam );
398 InvalidateRect( hWnd, NULL, FALSE );
399 return oldHbitmap;
400
401 case BM_GETIMAGE:
402 return GetWindowLongA( hWnd, HIMAGE_GWL_OFFSET );
403
404 case BM_GETCHECK16:
405 case BM_GETCHECK:
406 return get_button_state( hWnd ) & 3;
407
408 case BM_SETCHECK16:
409 case BM_SETCHECK:
410 if (wParam > maxCheckState[btn_type]) wParam = maxCheckState[btn_type];
411 state = get_button_state( hWnd );
412 if ((btn_type == BS_RADIOBUTTON) || (btn_type == BS_AUTORADIOBUTTON))
413 {
414 if (wParam) style |= WS_TABSTOP;
415 else style &= ~WS_TABSTOP;
416 SetWindowLongA( hWnd, GWL_STYLE, style );
417 }
418 if ((state & 3) != wParam)
419 {
420 set_button_state( hWnd, (state & ~3) | wParam );
421 paint_button( hWnd, btn_type, ODA_SELECT );
422 }
423 if ((btn_type == BS_AUTORADIOBUTTON) && (wParam == BUTTON_CHECKED) && (style & WS_CHILD))
424 BUTTON_CheckAutoRadioButton( hWnd );
425 break;
426
427 case BM_GETSTATE16:
428 case BM_GETSTATE:
429 return get_button_state( hWnd );
430
431 case BM_SETSTATE16:
432 case BM_SETSTATE:
433 state = get_button_state( hWnd );
434 if (wParam)
435 {
436 if (state & BUTTON_HIGHLIGHTED) break;
437 set_button_state( hWnd, state | BUTTON_HIGHLIGHTED );
438 }
439 else
440 {
441 if (!(state & BUTTON_HIGHLIGHTED)) break;
442 set_button_state( hWnd, state & ~BUTTON_HIGHLIGHTED );
443 }
444 paint_button( hWnd, btn_type, ODA_SELECT );
445 break;
446
447 case WM_NCHITTEST:
448 if(btn_type == BS_GROUPBOX) return HTTRANSPARENT;
449 /* fall through */
450 default:
451 return unicode ? DefWindowProcW(hWnd, uMsg, wParam, lParam) :
452 DefWindowProcA(hWnd, uMsg, wParam, lParam);
453 }
454 return 0;
455 }
456
457 /***********************************************************************
458 * ButtonWndProcW
459 * The button window procedure. This is just a wrapper which locks
460 * the passed HWND and calls the real window procedure (with a WND*
461 * pointer pointing to the locked windowstructure).
462 */
463 static LRESULT WINAPI ButtonWndProcW( HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam )
464 {
465 if (!IsWindow( hWnd )) return 0;
466 return ButtonWndProc_common( hWnd, uMsg, wParam, lParam, TRUE );
467 }
468
469
470 /***********************************************************************
471 * ButtonWndProcA
472 */
473 static LRESULT WINAPI ButtonWndProcA( HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam )
474 {
475 if (!IsWindow( hWnd )) return 0;
476 return ButtonWndProc_common( hWnd, uMsg, wParam, lParam, FALSE );
477 }
478
479
480 /**********************************************************************
481 * Convert button styles to flags used by DrawText.
482 * TODO: handle WS_EX_RIGHT extended style.
483 */
484 static UINT BUTTON_BStoDT(DWORD style)
485 {
486 UINT dtStyle = DT_NOCLIP; /* We use SelectClipRgn to limit output */
487
488 /* "Convert" pushlike buttons to pushbuttons */
489 if (style & BS_PUSHLIKE)
490 style &= ~0x0F;
491
492 if (!(style & BS_MULTILINE))
493 dtStyle |= DT_SINGLELINE;
494 else
495 dtStyle |= DT_WORDBREAK;
496
497 switch (style & BS_CENTER)
498 {
499 case BS_LEFT: /* DT_LEFT is 0 */ break;
500 case BS_RIGHT: dtStyle |= DT_RIGHT; break;
501 case BS_CENTER: dtStyle |= DT_CENTER; break;
502 default:
503 /* Pushbutton's text is centered by default */
504 if (get_button_type(style) <= BS_DEFPUSHBUTTON) dtStyle |= DT_CENTER;
505 /* all other flavours have left aligned text */
506 }
507
508 /* DrawText ignores vertical alignment for multiline text,
509 * but we use these flags to align label manualy.
510 */
511 if (get_button_type(style) != BS_GROUPBOX)
512 {
513 switch (style & BS_VCENTER)
514 {
515 case BS_TOP: /* DT_TOP is 0 */ break;
516 case BS_BOTTOM: dtStyle |= DT_BOTTOM; break;
517 case BS_VCENTER: /* fall through */
518 default: dtStyle |= DT_VCENTER; break;
519 }
520 }
521 else
522 /* GroupBox's text is always single line and is top aligned. */
523 dtStyle |= DT_SINGLELINE;
524
525 return dtStyle;
526 }
527
528 /**********************************************************************
529 * BUTTON_CalcLabelRect
530 *
531 * Calculates label's rectangle depending on button style.
532 *
533 * Returns flags to be passed to DrawText.
534 * Calculated rectangle doesn't take into account button state
535 * (pushed, etc.). If there is nothing to draw (no text/image) output
536 * rectangle is empty, and return value is (UINT)-1.
537 */
538 static UINT BUTTON_CalcLabelRect(HWND hwnd, HDC hdc, RECT *rc)
539 {
540 LONG style = GetWindowLongA( hwnd, GWL_STYLE );
541 WCHAR *text;
542 ICONINFO iconInfo;
543 BITMAP bm;
544 UINT dtStyle = BUTTON_BStoDT(style);
545 RECT r = *rc;
546 INT n;
547
548 /* Calculate label rectangle according to label type */
549 switch (style & (BS_ICON|BS_BITMAP))
550 {
551 case BS_TEXT:
552 if (!(text = get_button_text( hwnd ))) goto empty_rect;
553 if (!text[0])
554 {
555 HeapFree( GetProcessHeap(), 0, text );
556 goto empty_rect;
557 }
558 DrawTextW(hdc, text, -1, &r, dtStyle | DT_CALCRECT);
559 HeapFree( GetProcessHeap(), 0, text );
560 break;
561
562 case BS_ICON:
563 if (!GetIconInfo((HICON)GetWindowLongA( hwnd, HIMAGE_GWL_OFFSET ), &iconInfo))
564 goto empty_rect;
565
566 GetObjectW (iconInfo.hbmColor, sizeof(BITMAP), &bm);
567
568 r.right = r.left + bm.bmWidth;
569 r.bottom = r.top + bm.bmHeight;
570
571 DeleteObject(iconInfo.hbmColor);
572 DeleteObject(iconInfo.hbmMask);
573 break;
574
575 case BS_BITMAP:
576 if (!GetObjectW( (HANDLE)GetWindowLongA( hwnd, HIMAGE_GWL_OFFSET ), sizeof(BITMAP), &bm))
577 goto empty_rect;
578
579 r.right = r.left + bm.bmWidth;
580 r.bottom = r.top + bm.bmHeight;
581 break;
582
583 default:
584 empty_rect:
585 r.right = r.left;
586 r.bottom = r.top;
587 return (UINT)(LONG)-1;
588 }
589
590 /* Position label inside bounding rectangle according to
591 * alignment flags. (calculated rect is always left-top aligned).
592 * If label is aligned to any side - shift label in opposite
593 * direction to leave extra space for focus rectangle.
594 */
595 switch (dtStyle & (DT_CENTER|DT_RIGHT))
596 {
597 case DT_LEFT: r.left++; r.right++; break;
598 case DT_CENTER: n = r.right - r.left;
599 r.left = rc->left + ((rc->right - rc->left) - n) / 2;
600 r.right = r.left + n; break;
601 case DT_RIGHT: n = r.right - r.left;
602 r.right = rc->right - 1;
603 r.left = r.right - n;
604 break;
605 }
606
607 switch (dtStyle & (DT_VCENTER|DT_BOTTOM))
608 {
609 case DT_TOP: r.top++; r.bottom++; break;
610 case DT_VCENTER: n = r.bottom - r.top;
611 r.top = rc->top + ((rc->bottom - rc->top) - n) / 2;
612 r.bottom = r.top + n; break;
613 case DT_BOTTOM: n = r.bottom - r.top;
614 r.bottom = rc->bottom - 1;
615 r.top = r.bottom - n;
616 break;
617 }
618
619 *rc = r;
620 return dtStyle;
621 }
622
623
624 /**********************************************************************
625 * BUTTON_DrawTextCallback
626 *
627 * Callback function used by DrawStateW function.
628 */
629 static BOOL CALLBACK BUTTON_DrawTextCallback(HDC hdc, LPARAM lp, WPARAM wp, int cx, int cy)
630 {
631 RECT rc;
632 rc.left = 0;
633 rc.top = 0;
634 rc.right = cx;
635 rc.bottom = cy;
636
637 DrawTextW(hdc, (LPCWSTR)lp, -1, &rc, (UINT)wp);
638 return TRUE;
639 }
640
641
642 /**********************************************************************
643 * BUTTON_DrawLabel
644 *
645 * Common function for drawing button label.
646 */
647 static void BUTTON_DrawLabel(HWND hwnd, HDC hdc, UINT dtFlags, RECT *rc)
648 {
649 DRAWSTATEPROC lpOutputProc = NULL;
650 LPARAM lp;
651 WPARAM wp = 0;
652 HBRUSH hbr = 0;
653 UINT flags = IsWindowEnabled(hwnd) ? DSS_NORMAL : DSS_DISABLED;
654 LONG state = get_button_state( hwnd );
655 LONG style = GetWindowLongA( hwnd, GWL_STYLE );
656 WCHAR *text = NULL;
657
658 /* FIXME: To draw disabled label in Win31 look-and-feel, we probably
659 * must use DSS_MONO flag and COLOR_GRAYTEXT brush (or maybe DSS_UNION).
660 * I don't have Win31 on hand to verify that, so I leave it as is.
661 */
662
663 if ((style & BS_PUSHLIKE) && (state & BUTTON_3STATE))
664 {
665 hbr = GetSysColorBrush(COLOR_GRAYTEXT);
666 flags |= DSS_MONO;
667 }
668
669 switch (style & (BS_ICON|BS_BITMAP))
670 {
671 case BS_TEXT:
672 /* DST_COMPLEX -- is 0 */
673 lpOutputProc = BUTTON_DrawTextCallback;
674 if (!(text = get_button_text( hwnd ))) return;
675 lp = (LPARAM)text;
676 wp = (WPARAM)dtFlags;
677 break;
678
679 case BS_ICON:
680 flags |= DST_ICON;
681 lp = GetWindowLongA( hwnd, HIMAGE_GWL_OFFSET );
682 break;
683
684 case BS_BITMAP:
685 flags |= DST_BITMAP;
686 lp = GetWindowLongA( hwnd, HIMAGE_GWL_OFFSET );
687 break;
688
689 default:
690 return;
691 }
692
693 DrawStateW(hdc, hbr, lpOutputProc, lp, wp, rc->left, rc->top,
694 rc->right - rc->left, rc->bottom - rc->top, flags);
695 if (text) HeapFree( GetProcessHeap(), 0, text );
696 }
697
698 /**********************************************************************
699 * Push Button Functions
700 */
701 static void PB_Paint( HWND hwnd, HDC hDC, UINT action )
702 {
703 RECT rc, focus_rect, r;
704 UINT dtFlags;
705 HRGN hRgn;
706 HPEN hOldPen;
707 HBRUSH hOldBrush;
708 INT oldBkMode;
709 COLORREF oldTxtColor;
710 HFONT hFont;
711 LONG state = get_button_state( hwnd );
712 LONG style = GetWindowLongA( hwnd, GWL_STYLE );
713 BOOL pushedState = (state & BUTTON_HIGHLIGHTED);
714
715 GetClientRect( hwnd, &rc );
716
717 /* Send WM_CTLCOLOR to allow changing the font (the colors are fixed) */
718 if ((hFont = get_button_font( hwnd ))) SelectObject( hDC, hFont );
719 SendMessageW( GetParent(hwnd), WM_CTLCOLORBTN, hDC, (LPARAM)hwnd );
720 hOldPen = (HPEN)SelectObject(hDC, SYSCOLOR_GetPen(COLOR_WINDOWFRAME));
721 hOldBrush =(HBRUSH)SelectObject(hDC,GetSysColorBrush(COLOR_BTNFACE));
722 oldBkMode = SetBkMode(hDC, TRANSPARENT);
723
724 if ( TWEAK_WineLook == WIN31_LOOK)
725 {
726 COLORREF clr_wnd = GetSysColor(COLOR_WINDOW);
727 Rectangle(hDC, rc.left, rc.top, rc.right, rc.bottom);
728
729 SetPixel( hDC, rc.left, rc.top, clr_wnd);
730 SetPixel( hDC, rc.left, rc.bottom-1, clr_wnd);
731 SetPixel( hDC, rc.right-1, rc.top, clr_wnd);
732 SetPixel( hDC, rc.right-1, rc.bottom-1, clr_wnd);
733 InflateRect( &rc, -1, -1 );
734 }
735
736 if (get_button_type(style) == BS_DEFPUSHBUTTON)
737 {
738 Rectangle(hDC, rc.left, rc.top, rc.right, rc.bottom);
739 InflateRect( &rc, -1, -1 );
740 }
741
742 if (TWEAK_WineLook == WIN31_LOOK)
743 {
744 if (pushedState)
745 {
746 /* draw button shadow: */
747 SelectObject(hDC, GetSysColorBrush(COLOR_BTNSHADOW));
748 PatBlt(hDC, rc.left, rc.top, 1, rc.bottom-rc.top, PATCOPY );
749 PatBlt(hDC, rc.left, rc.top, rc.right-rc.left, 1, PATCOPY );
750 } else {
751 rc.right++, rc.bottom++;
752 DrawEdge( hDC, &rc, EDGE_RAISED, BF_RECT );
753 rc.right--, rc.bottom--;
754 }
755 }
756 else
757 {
758 UINT uState = DFCS_BUTTONPUSH | DFCS_ADJUSTRECT;
759
760 if (style & BS_FLAT)
761 uState |= DFCS_MONO;
762 else if (pushedState)
763 {
764 if (get_button_type(style) == BS_DEFPUSHBUTTON )
765 uState |= DFCS_FLAT;
766 else
767 uState |= DFCS_PUSHED;
768 }
769
770 if (state & (BUTTON_CHECKED | BUTTON_3STATE))
771 uState |= DFCS_CHECKED;
772
773 DrawFrameControl( hDC, &rc, DFC_BUTTON, uState );
774
775 focus_rect = rc;
776 }
777
778 /* draw button label */
779 r = rc;
780 dtFlags = BUTTON_CalcLabelRect(hwnd, hDC, &r);
781
782 if (dtFlags == (UINT)-1L)
783 goto cleanup;
784
785 if (pushedState)
786 OffsetRect(&r, 1, 1);
787
788 if(TWEAK_WineLook == WIN31_LOOK)
789 {
790 focus_rect = r;
791 InflateRect(&focus_rect, 2, 0);
792 }
793
794 hRgn = CreateRectRgn(rc.left, rc.top, rc.right, rc.bottom);
795 SelectClipRgn(hDC, hRgn);
796
797 oldTxtColor = SetTextColor( hDC, GetSysColor(COLOR_BTNTEXT) );
798
799 BUTTON_DrawLabel(hwnd, hDC, dtFlags, &r);
800
801 SetTextColor( hDC, oldTxtColor );
802 SelectClipRgn(hDC, 0);
803 DeleteObject(hRgn);
804
805 if (state & BUTTON_HASFOCUS)
806 {
807 InflateRect( &focus_rect, -1, -1 );
808 IntersectRect(&focus_rect, &focus_rect, &rc);
809 DrawFocusRect( hDC, &focus_rect );
810 }
811
812 cleanup:
813 SelectObject( hDC, hOldPen );
814 SelectObject( hDC, hOldBrush );
815 SetBkMode(hDC, oldBkMode);
816 }
817
818 /**********************************************************************
819 * Check Box & Radio Button Functions
820 */
821
822 static void CB_Paint( HWND hwnd, HDC hDC, UINT action )
823 {
824 RECT rbox, rtext, client;
825 HBRUSH hBrush;
826 int delta;
827 UINT dtFlags;
828 HRGN hRgn;
829 HFONT hFont;
830 LONG state = get_button_state( hwnd );
831 LONG style = GetWindowLongA( hwnd, GWL_STYLE );
832
833 if (style & BS_PUSHLIKE)
834 {
835 PB_Paint( hwnd, hDC, action );
836 return;
837 }
838
839 GetClientRect(hwnd, &client);
840 rbox = rtext = client;
841
842 if ((hFont = get_button_font( hwnd ))) SelectObject( hDC, hFont );
843
844 hBrush = SendMessageW( GetParent(hwnd), WM_CTLCOLORSTATIC, hDC, (LPARAM)hwnd );
845 if (!hBrush) /* did the app forget to call defwindowproc ? */
846 hBrush = DefWindowProcW( GetParent(hwnd), WM_CTLCOLORSTATIC, hDC, (LPARAM)hwnd );
847
848 if (style & BS_LEFTTEXT)
849 {
850 /* magic +4 is what CTL3D expects */
851
852 rtext.right -= checkBoxWidth + 4;
853 rbox.left = rbox.right - checkBoxWidth;
854 }
855 else
856 {
857 rtext.left += checkBoxWidth + 4;
858 rbox.right = checkBoxWidth;
859 }
860
861 /* Draw the check-box bitmap */
862 if (action == ODA_DRAWENTIRE || action == ODA_SELECT)
863 {
864 /* Since WM_ERASEBKGND does nothing, first prepare background */
865 if (action == ODA_SELECT) FillRect( hDC, &rbox, hBrush );
866 else FillRect( hDC, &client, hBrush );
867
868 if( TWEAK_WineLook == WIN31_LOOK )
869 {
870 HDC hMemDC = CreateCompatibleDC( hDC );
871 int x = 0, y = 0;
872 delta = (rbox.bottom - rbox.top - checkBoxHeight) / 2;
873
874 /* Check in case the client area is smaller than the checkbox bitmap */
875 if (delta < 0) delta = 0;
876
877 if (state & BUTTON_HIGHLIGHTED) x += 2 * checkBoxWidth;
878 if (state & (BUTTON_CHECKED | BUTTON_3STATE)) x += checkBoxWidth;
879 if ((get_button_type(style) == BS_RADIOBUTTON) ||
880 (get_button_type(style) == BS_AUTORADIOBUTTON)) y += checkBoxHeight;
881 else if (state & BUTTON_3STATE) y += 2 * checkBoxHeight;
882
883 /* The bitmap for the radio button is not aligned with the
884 * left of the window, it is 1 pixel off. */
885 if ((get_button_type(style) == BS_RADIOBUTTON) ||
886 (get_button_type(style) == BS_AUTORADIOBUTTON))
887 rbox.left += 1;
888
889 SelectObject( hMemDC, hbitmapCheckBoxes );
890 BitBlt( hDC, rbox.left, rbox.top + delta, checkBoxWidth,
891 checkBoxHeight, hMemDC, x, y, SRCCOPY );
892 DeleteDC( hMemDC );
893 }
894 else
895 {
896 UINT flags;
897
898 if ((get_button_type(style) == BS_RADIOBUTTON) ||
899 (get_button_type(style) == BS_AUTORADIOBUTTON)) flags = DFCS_BUTTONRADIO;
900 else if (state & BUTTON_3STATE) flags = DFCS_BUTTON3STATE;
901 else flags = DFCS_BUTTONCHECK;
902
903 if (state & (BUTTON_CHECKED | BUTTON_3STATE)) flags |= DFCS_CHECKED;
904 if (state & BUTTON_HIGHLIGHTED) flags |= DFCS_PUSHED;
905
906 if (style & WS_DISABLED) flags |= DFCS_INACTIVE;
907
908 /* rbox must have the correct height */
909 delta = rbox.bottom - rbox.top - checkBoxHeight;
910 if (delta > 0)
911 {
912 int ofs = (abs(delta) / 2);
913 rbox.bottom -= ofs + 1;
914 rbox.top = rbox.bottom - checkBoxHeight;
915 }
916 else if (delta < 0)
917 {
918 int ofs = (abs(delta) / 2);
919 rbox.top -= ofs + 1;
920 rbox.bottom = rbox.top + checkBoxHeight;
921 }
922
923 DrawFrameControl( hDC, &rbox, DFC_BUTTON, flags );
924 }
925 }
926
927 /* Draw label */
928 client = rtext;
929 dtFlags = BUTTON_CalcLabelRect(hwnd, hDC, &rtext);
930
931 if (dtFlags == (UINT)-1L) /* Noting to draw */
932 return;
933 hRgn = CreateRectRgn(client.left, client.top, client.right, client.bottom);
934 SelectClipRgn(hDC, hRgn);
935 DeleteObject(hRgn);
936
937 if (action == ODA_DRAWENTIRE)
938 BUTTON_DrawLabel(hwnd, hDC, dtFlags, &rtext);
939
940 /* ... and focus */
941 if ((action == ODA_FOCUS) ||
942 ((action == ODA_DRAWENTIRE) && (state & BUTTON_HASFOCUS)))
943 {
944 rtext.left--;
945 rtext.right++;
946 IntersectRect(&rtext, &rtext, &client);
947 DrawFocusRect( hDC, &rtext );
948 }
949 SelectClipRgn(hDC, 0);
950 }
951
952
953 /**********************************************************************
954 * BUTTON_CheckAutoRadioButton
955 *
956 * hwnd is checked, uncheck every other auto radio button in group
957 */
958 static void BUTTON_CheckAutoRadioButton( HWND hwnd )
959 {
960 HWND parent, sibling, start;
961
962 parent = GetParent(hwnd);
963 /* make sure that starting control is not disabled or invisible */
964 start = sibling = GetNextDlgGroupItem( parent, hwnd, TRUE );
965 do
966 {
967 if (!sibling) break;
968 if ((hwnd != sibling) &&
969 ((GetWindowLongA( sibling, GWL_STYLE) & 0x0f) == BS_AUTORADIOBUTTON))
970 SendMessageW( sibling, BM_SETCHECK, BUTTON_UNCHECKED, 0 );
971 sibling = GetNextDlgGroupItem( parent, sibling, FALSE );
972 } while (sibling != start);
973 }
974
975
976 /**********************************************************************
977 * Group Box Functions
978 */
979
980 static void GB_Paint( HWND hwnd, HDC hDC, UINT action )
981 {
982 RECT rc, rcFrame;
983 HBRUSH hbr;
984 HFONT hFont;
985 UINT dtFlags;
986 LONG style = GetWindowLongA( hwnd, GWL_STYLE );
987
988 if (action != ODA_DRAWENTIRE) return;
989
990 if ((hFont = get_button_font( hwnd ))) SelectObject( hDC, hFont );
991 /* GroupBox acts like static control, so it sends CTLCOLORSTATIC */
992 hbr = SendMessageW( GetParent(hwnd), WM_CTLCOLORSTATIC, hDC, (LPARAM)hwnd );
993 if (!hbr) /* did the app forget to call defwindowproc ? */
994 hbr = DefWindowProcW( GetParent(hwnd), WM_CTLCOLORSTATIC, hDC, (LPARAM)hwnd );
995
996 GetClientRect( hwnd, &rc);
997 if (TWEAK_WineLook == WIN31_LOOK) {
998 HPEN hPrevPen = SelectObject( hDC,
999 SYSCOLOR_GetPen(COLOR_WINDOWFRAME));
1000 HBRUSH hPrevBrush = SelectObject( hDC,
1001 GetStockObject(NULL_BRUSH) );
1002
1003 Rectangle( hDC, rc.left, rc.top + 2, rc.right - 1, rc.bottom - 1 );
1004 SelectObject( hDC, hPrevBrush );
1005 SelectObject( hDC, hPrevPen );
1006 } else {
1007 TEXTMETRICW tm;
1008 rcFrame = rc;
1009
1010 GetTextMetricsW (hDC, &tm);
1011 rcFrame.top += (tm.tmHeight / 2) - 1;
1012 DrawEdge (hDC, &rcFrame, EDGE_ETCHED, BF_RECT | ((style & BS_FLAT) ? BF_FLAT : 0));
1013 }
1014
1015 InflateRect(&rc, -7, 1);
1016 dtFlags = BUTTON_CalcLabelRect(hwnd, hDC, &rc);
1017
1018 if (dtFlags == (UINT)-1L)
1019 return;
1020
1021 /* Because buttons have CS_PARENTDC class style, there is a chance
1022 * that label will be drawn out of client rect.
1023 * But Windows doesn't clip label's rect, so do I.
1024 */
1025
1026 /* There is 1-pixel marging at the left, right, and bottom */
1027 rc.left--; rc.right++; rc.bottom++;
1028 FillRect(hDC, &rc, hbr);
1029 rc.left++; rc.right--; rc.bottom--;
1030
1031 BUTTON_DrawLabel(hwnd, hDC, dtFlags, &rc);
1032 }
1033
1034
1035 /**********************************************************************
1036 * User Button Functions
1037 */
1038
1039 static void UB_Paint( HWND hwnd, HDC hDC, UINT action )
1040 {
1041 RECT rc;
1042 HBRUSH hBrush;
1043 HFONT hFont;
1044 LONG state = get_button_state( hwnd );
1045
1046 if (action == ODA_SELECT) return;
1047
1048 GetClientRect( hwnd, &rc);
1049
1050 if ((hFont = get_button_font( hwnd ))) SelectObject( hDC, hFont );
1051
1052 hBrush = SendMessageW( GetParent(hwnd), WM_CTLCOLORBTN, hDC, (LPARAM)hwnd );
1053 if (!hBrush) /* did the app forget to call defwindowproc ? */
1054 hBrush = DefWindowProcW( GetParent(hwnd), WM_CTLCOLORBTN, hDC, (LPARAM)hwnd );
1055
1056 FillRect( hDC, &rc, hBrush );
1057 if ((action == ODA_FOCUS) ||
1058 ((action == ODA_DRAWENTIRE) && (state & BUTTON_HASFOCUS)))
1059 DrawFocusRect( hDC, &rc );
1060 }
1061
1062
1063 /**********************************************************************
1064 * Ownerdrawn Button Functions
1065 */
1066
1067 static void OB_Paint( HWND hwnd, HDC hDC, UINT action )
1068 {
1069 LONG state = get_button_state( hwnd );
1070 DRAWITEMSTRUCT dis;
1071 HRGN clipRegion;
1072 RECT clipRect;
1073 UINT id = GetWindowLongA( hwnd, GWL_ID );
1074
1075 dis.CtlType = ODT_BUTTON;
1076 dis.CtlID = id;
1077 dis.itemID = 0;
1078 dis.itemAction = action;
1079 dis.itemState = ((state & BUTTON_HASFOCUS) ? ODS_FOCUS : 0) |
1080 ((state & BUTTON_HIGHLIGHTED) ? ODS_SELECTED : 0) |
1081 (IsWindowEnabled(hwnd) ? 0: ODS_DISABLED);
1082 dis.hwndItem = hwnd;
1083 dis.hDC = hDC;
1084 dis.itemData = 0;
1085 GetClientRect( hwnd, &dis.rcItem );
1086
1087 clipRegion = CreateRectRgnIndirect(&dis.rcItem);
1088 if (GetClipRgn(hDC, clipRegion) != 1)
1089 {
1090 DeleteObject(clipRegion);
1091 clipRegion=(HRGN)NULL;
1092 }
1093 clipRect = dis.rcItem;
1094 DPtoLP(hDC, (LPPOINT) &clipRect, 2);
1095 IntersectClipRect(hDC, clipRect.left, clipRect.top, clipRect.right, clipRect.bottom);
1096
1097 SetBkColor( hDC, GetSysColor( COLOR_BTNFACE ) );
1098 SendMessageW( GetParent(hwnd), WM_DRAWITEM, id, (LPARAM)&dis );
1099 SelectClipRgn(hDC, clipRegion);
1100 }
1101
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