?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
user32: Fix checking of show count in ShowCursor.
[wine/multimedia.git] / dlls / user32 / cursoricon.c
blob9d7788daac35fa163fe50b9504c7a0a0aee0d1ed
1 /*
2 * Cursor and icon support
3 *
4 * Copyright 1995 Alexandre Julliard
5 * 1996 Martin Von Loewis
6 * 1997 Alex Korobka
7 * 1998 Turchanov Sergey
8 * 2007 Henri Verbeet
9 *
10 * This library is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU Lesser General Public
12 * License as published by the Free Software Foundation; either
13 * version 2.1 of the License, or (at your option) any later version.
14 *
15 * This library is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 * Lesser General Public License for more details.
19 *
20 * You should have received a copy of the GNU Lesser General Public
21 * License along with this library; if not, write to the Free Software
22 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
23 */
24
25 /*
26 * Theory:
27 *
28 * Cursors and icons are stored in a global heap block, with the
29 * following layout:
30 *
31 * CURSORICONINFO info;
32 * BYTE[] ANDbits;
33 * BYTE[] XORbits;
34 *
35 * The bits structures are in the format of a device-dependent bitmap.
36 *
37 * This layout is very sub-optimal, as the bitmap bits are stored in
38 * the X client instead of in the server like other bitmaps; however,
39 * some programs (notably Paint Brush) expect to be able to manipulate
40 * the bits directly :-(
41 */
42
43 #include "config.h"
44 #include "wine/port.h"
45
46 #include <stdarg.h>
47 #include <string.h>
48 #include <stdlib.h>
49
50 #include "windef.h"
51 #include "winbase.h"
52 #include "wingdi.h"
53 #include "winerror.h"
54 #include "wine/winbase16.h"
55 #include "wine/winuser16.h"
56 #include "wine/exception.h"
57 #include "wine/server.h"
58 #include "controls.h"
59 #include "user_private.h"
60 #include "wine/debug.h"
61
62 WINE_DEFAULT_DEBUG_CHANNEL(cursor);
63 WINE_DECLARE_DEBUG_CHANNEL(icon);
64 WINE_DECLARE_DEBUG_CHANNEL(resource);
65
66 #include "pshpack1.h"
67
68 typedef struct {
69 BYTE bWidth;
70 BYTE bHeight;
71 BYTE bColorCount;
72 BYTE bReserved;
73 WORD xHotspot;
74 WORD yHotspot;
75 DWORD dwDIBSize;
76 DWORD dwDIBOffset;
77 } CURSORICONFILEDIRENTRY;
78
79 typedef struct
80 {
81 WORD idReserved;
82 WORD idType;
83 WORD idCount;
84 CURSORICONFILEDIRENTRY idEntries[1];
85 } CURSORICONFILEDIR;
86
87 #include "poppack.h"
88
89 static RECT CURSOR_ClipRect; /* Cursor clipping rect */
90
91 static HDC screen_dc;
92
93 static const WCHAR DISPLAYW[] = {'D','I','S','P','L','A','Y',0};
94
95
96 /**********************************************************************
97 * ICONCACHE for cursors/icons loaded with LR_SHARED.
98 *
99 * FIXME: This should not be allocated on the system heap, but on a
100 * subsystem-global heap (i.e. one for all Win16 processes,
101 * and one for each Win32 process).
102 */
103 typedef struct tagICONCACHE
104 {
105 struct tagICONCACHE *next;
106
107 HMODULE hModule;
108 HRSRC hRsrc;
109 HRSRC hGroupRsrc;
110 HICON hIcon;
111
112 INT count;
113
114 } ICONCACHE;
115
116 static ICONCACHE *IconAnchor = NULL;
117
118 static CRITICAL_SECTION IconCrst;
119 static CRITICAL_SECTION_DEBUG critsect_debug =
120 {
121 0, 0, &IconCrst,
122 { &critsect_debug.ProcessLocksList, &critsect_debug.ProcessLocksList },
123 0, 0, { (DWORD_PTR)(__FILE__ ": IconCrst") }
124 };
125 static CRITICAL_SECTION IconCrst = { &critsect_debug, -1, 0, 0, 0, 0 };
126
127 static const WORD ICON_HOTSPOT = 0x4242;
128
129
130 /**********************************************************************
131 * User objects management
132 */
133
134 struct cursoricon_object
135 {
136 struct user_object obj; /* object header */
137 ULONG_PTR param; /* opaque param used by 16-bit code */
138 /* followed by cursor data in CURSORICONINFO format */
139 };
140
141 static HICON alloc_icon_handle( unsigned int size )
142 {
143 struct cursoricon_object *obj = HeapAlloc( GetProcessHeap(), 0, sizeof(*obj) + size );
144 if (!obj) return 0;
145 obj->param = 0;
146 return alloc_user_handle( &obj->obj, USER_ICON );
147 }
148
149 static struct tagCURSORICONINFO *get_icon_ptr( HICON handle )
150 {
151 struct cursoricon_object *obj = get_user_handle_ptr( handle, USER_ICON );
152 if (obj == OBJ_OTHER_PROCESS)
153 {
154 WARN( "icon handle %p from other process\n", handle );
155 obj = NULL;
156 }
157 return obj ? (struct tagCURSORICONINFO *)(obj + 1) : NULL;
158 }
159
160 static void release_icon_ptr( HICON handle, struct tagCURSORICONINFO *ptr )
161 {
162 release_user_handle_ptr( (struct cursoricon_object *)ptr - 1 );
163 }
164
165 static BOOL free_icon_handle( HICON handle )
166 {
167 struct cursoricon_object *obj = free_user_handle( handle, USER_ICON );
168
169 if (obj == OBJ_OTHER_PROCESS) WARN( "icon handle %p from other process\n", handle );
170 else if (obj)
171 {
172 ULONG_PTR param = obj->param;
173 HeapFree( GetProcessHeap(), 0, obj );
174 if (wow_handlers.free_icon_param && param) wow_handlers.free_icon_param( param );
175 USER_Driver->pDestroyCursorIcon( handle );
176 return TRUE;
177 }
178 return FALSE;
179 }
180
181 ULONG_PTR get_icon_param( HICON handle )
182 {
183 ULONG_PTR ret = 0;
184 struct cursoricon_object *obj = get_user_handle_ptr( handle, USER_ICON );
185
186 if (obj == OBJ_OTHER_PROCESS) WARN( "icon handle %p from other process\n", handle );
187 else if (obj)
188 {
189 ret = obj->param;
190 release_user_handle_ptr( obj );
191 }
192 return ret;
193 }
194
195 ULONG_PTR set_icon_param( HICON handle, ULONG_PTR param )
196 {
197 ULONG_PTR ret = 0;
198 struct cursoricon_object *obj = get_user_handle_ptr( handle, USER_ICON );
199
200 if (obj == OBJ_OTHER_PROCESS) WARN( "icon handle %p from other process\n", handle );
201 else if (obj)
202 {
203 ret = obj->param;
204 obj->param = param;
205 release_user_handle_ptr( obj );
206 }
207 return ret;
208 }
209
210
211 /***********************************************************************
212 * map_fileW
213 *
214 * Helper function to map a file to memory:
215 * name - file name
216 * [RETURN] ptr - pointer to mapped file
217 * [RETURN] filesize - pointer size of file to be stored if not NULL
218 */
219 static void *map_fileW( LPCWSTR name, LPDWORD filesize )
220 {
221 HANDLE hFile, hMapping;
222 LPVOID ptr = NULL;
223
224 hFile = CreateFileW( name, GENERIC_READ, FILE_SHARE_READ, NULL,
225 OPEN_EXISTING, FILE_FLAG_RANDOM_ACCESS, 0 );
226 if (hFile != INVALID_HANDLE_VALUE)
227 {
228 hMapping = CreateFileMappingW( hFile, NULL, PAGE_READONLY, 0, 0, NULL );
229 if (hMapping)
230 {
231 ptr = MapViewOfFile( hMapping, FILE_MAP_READ, 0, 0, 0 );
232 CloseHandle( hMapping );
233 if (filesize)
234 *filesize = GetFileSize( hFile, NULL );
235 }
236 CloseHandle( hFile );
237 }
238 return ptr;
239 }
240
241
242 /***********************************************************************
243 * get_bitmap_width_bytes
244 *
245 * Return number of bytes taken by a scanline of 16-bit aligned Windows DDB
246 * data.
247 */
248 static int get_bitmap_width_bytes( int width, int bpp )
249 {
250 switch(bpp)
251 {
252 case 1:
253 return 2 * ((width+15) / 16);
254 case 4:
255 return 2 * ((width+3) / 4);
256 case 24:
257 width *= 3;
258 /* fall through */
259 case 8:
260 return width + (width & 1);
261 case 16:
262 case 15:
263 return width * 2;
264 case 32:
265 return width * 4;
266 default:
267 WARN("Unknown depth %d, please report.\n", bpp );
268 }
269 return -1;
270 }
271
272
273 /***********************************************************************
274 * get_dib_width_bytes
275 *
276 * Return the width of a DIB bitmap in bytes. DIB bitmap data is 32-bit aligned.
277 */
278 static int get_dib_width_bytes( int width, int depth )
279 {
280 int words;
281
282 switch(depth)
283 {
284 case 1: words = (width + 31) / 32; break;
285 case 4: words = (width + 7) / 8; break;
286 case 8: words = (width + 3) / 4; break;
287 case 15:
288 case 16: words = (width + 1) / 2; break;
289 case 24: words = (width * 3 + 3)/4; break;
290 default:
291 WARN("(%d): Unsupported depth\n", depth );
292 /* fall through */
293 case 32:
294 words = width;
295 }
296 return 4 * words;
297 }
298
299
300 /***********************************************************************
301 * bitmap_info_size
302 *
303 * Return the size of the bitmap info structure including color table.
304 */
305 static int bitmap_info_size( const BITMAPINFO * info, WORD coloruse )
306 {
307 int colors, masks = 0;
308
309 if (info->bmiHeader.biSize == sizeof(BITMAPCOREHEADER))
310 {
311 const BITMAPCOREHEADER *core = (const BITMAPCOREHEADER *)info;
312 colors = (core->bcBitCount <= 8) ? 1 << core->bcBitCount : 0;
313 return sizeof(BITMAPCOREHEADER) + colors *
314 ((coloruse == DIB_RGB_COLORS) ? sizeof(RGBTRIPLE) : sizeof(WORD));
315 }
316 else /* assume BITMAPINFOHEADER */
317 {
318 colors = info->bmiHeader.biClrUsed;
319 if (colors > 256) /* buffer overflow otherwise */
320 colors = 256;
321 if (!colors && (info->bmiHeader.biBitCount <= 8))
322 colors = 1 << info->bmiHeader.biBitCount;
323 if (info->bmiHeader.biCompression == BI_BITFIELDS) masks = 3;
324 return info->bmiHeader.biSize + masks * sizeof(DWORD) + colors *
325 ((coloruse == DIB_RGB_COLORS) ? sizeof(RGBQUAD) : sizeof(WORD));
326 }
327 }
328
329
330 /***********************************************************************
331 * is_dib_monochrome
332 *
333 * Returns whether a DIB can be converted to a monochrome DDB.
334 *
335 * A DIB can be converted if its color table contains only black and
336 * white. Black must be the first color in the color table.
337 *
338 * Note : If the first color in the color table is white followed by
339 * black, we can't convert it to a monochrome DDB with
340 * SetDIBits, because black and white would be inverted.
341 */
342 static BOOL is_dib_monochrome( const BITMAPINFO* info )
343 {
344 if (info->bmiHeader.biBitCount != 1) return FALSE;
345
346 if (info->bmiHeader.biSize == sizeof(BITMAPCOREHEADER))
347 {
348 const RGBTRIPLE *rgb = ((const BITMAPCOREINFO*)info)->bmciColors;
349
350 /* Check if the first color is black */
351 if ((rgb->rgbtRed == 0) && (rgb->rgbtGreen == 0) && (rgb->rgbtBlue == 0))
352 {
353 rgb++;
354
355 /* Check if the second color is white */
356 return ((rgb->rgbtRed == 0xff) && (rgb->rgbtGreen == 0xff)
357 && (rgb->rgbtBlue == 0xff));
358 }
359 else return FALSE;
360 }
361 else /* assume BITMAPINFOHEADER */
362 {
363 const RGBQUAD *rgb = info->bmiColors;
364
365 /* Check if the first color is black */
366 if ((rgb->rgbRed == 0) && (rgb->rgbGreen == 0) &&
367 (rgb->rgbBlue == 0) && (rgb->rgbReserved == 0))
368 {
369 rgb++;
370
371 /* Check if the second color is white */
372 return ((rgb->rgbRed == 0xff) && (rgb->rgbGreen == 0xff)
373 && (rgb->rgbBlue == 0xff) && (rgb->rgbReserved == 0));
374 }
375 else return FALSE;
376 }
377 }
378
379 /***********************************************************************
380 * DIB_GetBitmapInfo
381 *
382 * Get the info from a bitmap header.
383 * Return 1 for INFOHEADER, 0 for COREHEADER,
384 */
385 static int DIB_GetBitmapInfo( const BITMAPINFOHEADER *header, LONG *width,
386 LONG *height, WORD *bpp, DWORD *compr )
387 {
388 if (header->biSize == sizeof(BITMAPCOREHEADER))
389 {
390 const BITMAPCOREHEADER *core = (const BITMAPCOREHEADER *)header;
391 *width = core->bcWidth;
392 *height = core->bcHeight;
393 *bpp = core->bcBitCount;
394 *compr = 0;
395 return 0;
396 }
397 else if (header->biSize >= sizeof(BITMAPINFOHEADER))
398 {
399 *width = header->biWidth;
400 *height = header->biHeight;
401 *bpp = header->biBitCount;
402 *compr = header->biCompression;
403 return 1;
404 }
405 ERR("(%d): unknown/wrong size for header\n", header->biSize );
406 return -1;
407 }
408
409 /**********************************************************************
410 * CURSORICON_FindSharedIcon
411 */
412 static HICON CURSORICON_FindSharedIcon( HMODULE hModule, HRSRC hRsrc )
413 {
414 HICON hIcon = 0;
415 ICONCACHE *ptr;
416
417 EnterCriticalSection( &IconCrst );
418
419 for ( ptr = IconAnchor; ptr; ptr = ptr->next )
420 if ( ptr->hModule == hModule && ptr->hRsrc == hRsrc )
421 {
422 ptr->count++;
423 hIcon = ptr->hIcon;
424 break;
425 }
426
427 LeaveCriticalSection( &IconCrst );
428
429 return hIcon;
430 }
431
432 /*************************************************************************
433 * CURSORICON_FindCache
434 *
435 * Given a handle, find the corresponding cache element
436 *
437 * PARAMS
438 * Handle [I] handle to an Image
439 *
440 * RETURNS
441 * Success: The cache entry
442 * Failure: NULL
443 *
444 */
445 static ICONCACHE* CURSORICON_FindCache(HICON hIcon)
446 {
447 ICONCACHE *ptr;
448 ICONCACHE *pRet=NULL;
449 BOOL IsFound = FALSE;
450
451 EnterCriticalSection( &IconCrst );
452
453 for (ptr = IconAnchor; ptr != NULL && !IsFound; ptr = ptr->next)
454 {
455 if ( hIcon == ptr->hIcon )
456 {
457 IsFound = TRUE;
458 pRet = ptr;
459 }
460 }
461
462 LeaveCriticalSection( &IconCrst );
463
464 return pRet;
465 }
466
467 /**********************************************************************
468 * CURSORICON_AddSharedIcon
469 */
470 static void CURSORICON_AddSharedIcon( HMODULE hModule, HRSRC hRsrc, HRSRC hGroupRsrc, HICON hIcon )
471 {
472 ICONCACHE *ptr = HeapAlloc( GetProcessHeap(), 0, sizeof(ICONCACHE) );
473 if ( !ptr ) return;
474
475 ptr->hModule = hModule;
476 ptr->hRsrc = hRsrc;
477 ptr->hIcon = hIcon;
478 ptr->hGroupRsrc = hGroupRsrc;
479 ptr->count = 1;
480
481 EnterCriticalSection( &IconCrst );
482 ptr->next = IconAnchor;
483 IconAnchor = ptr;
484 LeaveCriticalSection( &IconCrst );
485 }
486
487 /**********************************************************************
488 * CURSORICON_DelSharedIcon
489 */
490 static INT CURSORICON_DelSharedIcon( HICON hIcon )
491 {
492 INT count = -1;
493 ICONCACHE *ptr;
494
495 EnterCriticalSection( &IconCrst );
496
497 for ( ptr = IconAnchor; ptr; ptr = ptr->next )
498 if ( ptr->hIcon == hIcon )
499 {
500 if ( ptr->count > 0 ) ptr->count--;
501 count = ptr->count;
502 break;
503 }
504
505 LeaveCriticalSection( &IconCrst );
506
507 return count;
508 }
509
510 /**********************************************************************
511 * get_icon_size
512 */
513 BOOL get_icon_size( HICON handle, SIZE *size )
514 {
515 CURSORICONINFO *info;
516
517 if (!(info = get_icon_ptr( handle ))) return FALSE;
518 size->cx = info->nWidth;
519 size->cy = info->nHeight;
520 release_icon_ptr( handle, info );
521 return TRUE;
522 }
523
524 /*
525 * The following macro functions account for the irregularities of
526 * accessing cursor and icon resources in files and resource entries.
527 */
528 typedef BOOL (*fnGetCIEntry)( LPVOID dir, int n,
529 int *width, int *height, int *bits );
530
531 /**********************************************************************
532 * CURSORICON_FindBestIcon
533 *
534 * Find the icon closest to the requested size and bit depth.
535 */
536 static int CURSORICON_FindBestIcon( LPVOID dir, fnGetCIEntry get_entry,
537 int width, int height, int depth )
538 {
539 int i, cx, cy, bits, bestEntry = -1;
540 UINT iTotalDiff, iXDiff=0, iYDiff=0, iColorDiff;
541 UINT iTempXDiff, iTempYDiff, iTempColorDiff;
542
543 /* Find Best Fit */
544 iTotalDiff = 0xFFFFFFFF;
545 iColorDiff = 0xFFFFFFFF;
546 for ( i = 0; get_entry( dir, i, &cx, &cy, &bits ); i++ )
547 {
548 iTempXDiff = abs(width - cx);
549 iTempYDiff = abs(height - cy);
550
551 if(iTotalDiff > (iTempXDiff + iTempYDiff))
552 {
553 iXDiff = iTempXDiff;
554 iYDiff = iTempYDiff;
555 iTotalDiff = iXDiff + iYDiff;
556 }
557 }
558
559 /* Find Best Colors for Best Fit */
560 for ( i = 0; get_entry( dir, i, &cx, &cy, &bits ); i++ )
561 {
562 if(abs(width - cx) == iXDiff && abs(height - cy) == iYDiff)
563 {
564 iTempColorDiff = abs(depth - bits);
565 if(iColorDiff > iTempColorDiff)
566 {
567 bestEntry = i;
568 iColorDiff = iTempColorDiff;
569 }
570 }
571 }
572
573 return bestEntry;
574 }
575
576 static BOOL CURSORICON_GetResIconEntry( LPVOID dir, int n,
577 int *width, int *height, int *bits )
578 {
579 CURSORICONDIR *resdir = dir;
580 ICONRESDIR *icon;
581
582 if ( resdir->idCount <= n )
583 return FALSE;
584 icon = &resdir->idEntries[n].ResInfo.icon;
585 *width = icon->bWidth;
586 *height = icon->bHeight;
587 *bits = resdir->idEntries[n].wBitCount;
588 return TRUE;
589 }
590
591 /**********************************************************************
592 * CURSORICON_FindBestCursor
593 *
594 * Find the cursor closest to the requested size.
595 *
596 * FIXME: parameter 'color' ignored.
597 */
598 static int CURSORICON_FindBestCursor( LPVOID dir, fnGetCIEntry get_entry,
599 int width, int height, int depth )
600 {
601 int i, maxwidth, maxheight, cx, cy, bits, bestEntry = -1;
602
603 /* Double height to account for AND and XOR masks */
604
605 height *= 2;
606
607 /* First find the largest one smaller than or equal to the requested size*/
608
609 maxwidth = maxheight = 0;
610 for ( i = 0; get_entry( dir, i, &cx, &cy, &bits ); i++ )
611 {
612 if ((cx <= width) && (cy <= height) &&
613 (cx > maxwidth) && (cy > maxheight))
614 {
615 bestEntry = i;
616 maxwidth = cx;
617 maxheight = cy;
618 }
619 }
620 if (bestEntry != -1) return bestEntry;
621
622 /* Now find the smallest one larger than the requested size */
623
624 maxwidth = maxheight = 255;
625 for ( i = 0; get_entry( dir, i, &cx, &cy, &bits ); i++ )
626 {
627 if (((cx < maxwidth) && (cy < maxheight)) || (bestEntry == -1))
628 {
629 bestEntry = i;
630 maxwidth = cx;
631 maxheight = cy;
632 }
633 }
634
635 return bestEntry;
636 }
637
638 static BOOL CURSORICON_GetResCursorEntry( LPVOID dir, int n,
639 int *width, int *height, int *bits )
640 {
641 CURSORICONDIR *resdir = dir;
642 CURSORDIR *cursor;
643
644 if ( resdir->idCount <= n )
645 return FALSE;
646 cursor = &resdir->idEntries[n].ResInfo.cursor;
647 *width = cursor->wWidth;
648 *height = cursor->wHeight;
649 *bits = resdir->idEntries[n].wBitCount;
650 return TRUE;
651 }
652
653 static CURSORICONDIRENTRY *CURSORICON_FindBestIconRes( CURSORICONDIR * dir,
654 int width, int height, int depth )
655 {
656 int n;
657
658 n = CURSORICON_FindBestIcon( dir, CURSORICON_GetResIconEntry,
659 width, height, depth );
660 if ( n < 0 )
661 return NULL;
662 return &dir->idEntries[n];
663 }
664
665 static CURSORICONDIRENTRY *CURSORICON_FindBestCursorRes( CURSORICONDIR *dir,
666 int width, int height, int depth )
667 {
668 int n = CURSORICON_FindBestCursor( dir, CURSORICON_GetResCursorEntry,
669 width, height, depth );
670 if ( n < 0 )
671 return NULL;
672 return &dir->idEntries[n];
673 }
674
675 static BOOL CURSORICON_GetFileEntry( LPVOID dir, int n,
676 int *width, int *height, int *bits )
677 {
678 CURSORICONFILEDIR *filedir = dir;
679 CURSORICONFILEDIRENTRY *entry;
680 BITMAPINFOHEADER *info;
681
682 if ( filedir->idCount <= n )
683 return FALSE;
684 entry = &filedir->idEntries[n];
685 /* FIXME: check against file size */
686 info = (BITMAPINFOHEADER *)((char *)dir + entry->dwDIBOffset);
687 *width = entry->bWidth;
688 *height = entry->bHeight;
689 *bits = info->biBitCount;
690 return TRUE;
691 }
692
693 static CURSORICONFILEDIRENTRY *CURSORICON_FindBestCursorFile( CURSORICONFILEDIR *dir,
694 int width, int height, int depth )
695 {
696 int n = CURSORICON_FindBestCursor( dir, CURSORICON_GetFileEntry,
697 width, height, depth );
698 if ( n < 0 )
699 return NULL;
700 return &dir->idEntries[n];
701 }
702
703 static CURSORICONFILEDIRENTRY *CURSORICON_FindBestIconFile( CURSORICONFILEDIR *dir,
704 int width, int height, int depth )
705 {
706 int n = CURSORICON_FindBestIcon( dir, CURSORICON_GetFileEntry,
707 width, height, depth );
708 if ( n < 0 )
709 return NULL;
710 return &dir->idEntries[n];
711 }
712
713 /***********************************************************************
714 * stretch_blt_icon
715 *
716 * A helper function that stretches a bitmap buffer into an HBITMAP.
717 *
718 * PARAMS
719 * hDest [I] The handle of the destination bitmap.
720 * pDestInfo [I] The BITMAPINFO of the destination bitmap.
721 * pSrcInfo [I] The BITMAPINFO of the source bitmap.
722 * pSrcBits [I] A pointer to the source bitmap buffer.
723 **/
724 static BOOL stretch_blt_icon(HBITMAP hDest, BITMAPINFO *pDestInfo, BITMAPINFO *pSrcInfo, char *pSrcBits)
725 {
726 HBITMAP hOld;
727 BOOL res = FALSE;
728 HDC hdcMem = CreateCompatibleDC(screen_dc);
729
730 if (hdcMem)
731 {
732 hOld = SelectObject(hdcMem, hDest);
733 res = StretchDIBits(hdcMem,
734 0, 0, pDestInfo->bmiHeader.biWidth, pDestInfo->bmiHeader.biHeight,
735 0, 0, pSrcInfo->bmiHeader.biWidth, pSrcInfo->bmiHeader.biHeight,
736 pSrcBits, pSrcInfo, DIB_RGB_COLORS, SRCCOPY);
737 SelectObject(hdcMem, hOld);
738 DeleteDC( hdcMem );
739 }
740
741 return res;
742 }
743
744 static HICON CURSORICON_CreateIconFromBMI( BITMAPINFO *bmi,
745 POINT16 hotspot, BOOL bIcon,
746 DWORD dwVersion,
747 INT width, INT height,
748 UINT cFlag )
749 {
750 HICON hObj;
751 int sizeAnd, sizeXor;
752 HBITMAP hAndBits = 0, hXorBits = 0; /* error condition for later */
753 BITMAP bmpXor, bmpAnd;
754 BOOL do_stretch;
755 INT size;
756 BITMAPINFO *pSrcInfo, *pDestInfo;
757
758 if (dwVersion == 0x00020000)
759 {
760 FIXME_(cursor)("\t2.xx resources are not supported\n");
761 return 0;
762 }
763
764 /* Check bitmap header */
765
766 if ( (bmi->bmiHeader.biSize != sizeof(BITMAPCOREHEADER)) &&
767 (bmi->bmiHeader.biSize != sizeof(BITMAPINFOHEADER) ||
768 bmi->bmiHeader.biCompression != BI_RGB) )
769 {
770 WARN_(cursor)("\tinvalid resource bitmap header.\n");
771 return 0;
772 }
773
774 size = bitmap_info_size( bmi, DIB_RGB_COLORS );
775
776 if (!width) width = bmi->bmiHeader.biWidth;
777 if (!height) height = bmi->bmiHeader.biHeight/2;
778 do_stretch = (bmi->bmiHeader.biHeight/2 != height) ||
779 (bmi->bmiHeader.biWidth != width);
780
781 /* Scale the hotspot */
782 if (do_stretch && hotspot.x != ICON_HOTSPOT && hotspot.y != ICON_HOTSPOT)
783 {
784 hotspot.x = (hotspot.x * width) / bmi->bmiHeader.biWidth;
785 hotspot.y = (hotspot.y * height) / (bmi->bmiHeader.biHeight / 2);
786 }
787
788 if (!screen_dc) screen_dc = CreateDCW( DISPLAYW, NULL, NULL, NULL );
789 if (screen_dc)
790 {
791 /* Make sure we have room for the monochrome bitmap later on.
792 * Note that BITMAPINFOINFO and BITMAPCOREHEADER are the same
793 * up to and including the biBitCount. In-memory icon resource
794 * format is as follows:
795 *
796 * BITMAPINFOHEADER icHeader // DIB header
797 * RGBQUAD icColors[] // Color table
798 * BYTE icXOR[] // DIB bits for XOR mask
799 * BYTE icAND[] // DIB bits for AND mask
800 */
801
802 pSrcInfo = HeapAlloc( GetProcessHeap(), 0,
803 max(size, sizeof(BITMAPINFOHEADER) + 2*sizeof(RGBQUAD)));
804 pDestInfo = HeapAlloc( GetProcessHeap(), 0,
805 max(size, sizeof(BITMAPINFOHEADER) + 2*sizeof(RGBQUAD)));
806 if (pSrcInfo && pDestInfo)
807 {
808 memcpy( pSrcInfo, bmi, size );
809 pSrcInfo->bmiHeader.biHeight /= 2;
810
811 memcpy( pDestInfo, bmi, size );
812 pDestInfo->bmiHeader.biWidth = width;
813 pDestInfo->bmiHeader.biHeight = height;
814 pDestInfo->bmiHeader.biSizeImage = 0;
815
816 /* Create the XOR bitmap */
817 if(pSrcInfo->bmiHeader.biBitCount == 32)
818 {
819 void *pDIBBuffer = NULL;
820 hXorBits = CreateDIBSection(screen_dc, pDestInfo, DIB_RGB_COLORS, &pDIBBuffer, NULL, 0);
821
822 if(hXorBits)
823 {
824 if (!stretch_blt_icon(hXorBits, pDestInfo, pSrcInfo, (char*)bmi + size))
825 {
826 DeleteObject(hXorBits);
827 hXorBits = 0;
828 }
829 }
830 }
831 else
832 {
833 if (do_stretch)
834 {
835 hXorBits = CreateCompatibleBitmap(screen_dc, width, height);
836 if (hXorBits)
837 {
838 if (!stretch_blt_icon(hXorBits, pDestInfo, pSrcInfo, (char*)bmi + size))
839 {
840 DeleteObject(hXorBits);
841 hXorBits = 0;
842 }
843 }
844 }
845 else
846 {
847 if (is_dib_monochrome(bmi))
848 {
849 hXorBits = CreateBitmap(width, height, 1, 1, NULL);
850 SetDIBits(screen_dc, hXorBits, 0, height,
851 (char *)bmi + size, pSrcInfo, DIB_RGB_COLORS);
852 }
853 else
854 hXorBits = CreateDIBitmap(screen_dc, &pSrcInfo->bmiHeader,
855 CBM_INIT, (char *)bmi + size, pSrcInfo, DIB_RGB_COLORS);
856 }
857 }
858
859 if( hXorBits )
860 {
861 char* xbits = (char *)bmi + size +
862 get_dib_width_bytes( bmi->bmiHeader.biWidth,
863 bmi->bmiHeader.biBitCount ) * abs( bmi->bmiHeader.biHeight ) / 2;
864
865 pSrcInfo->bmiHeader.biBitCount = 1;
866 if (pSrcInfo->bmiHeader.biSize != sizeof(BITMAPCOREHEADER))
867 {
868 RGBQUAD *rgb = pSrcInfo->bmiColors;
869
870 pSrcInfo->bmiHeader.biClrUsed = pSrcInfo->bmiHeader.biClrImportant = 2;
871 rgb[0].rgbBlue = rgb[0].rgbGreen = rgb[0].rgbRed = 0x00;
872 rgb[1].rgbBlue = rgb[1].rgbGreen = rgb[1].rgbRed = 0xff;
873 rgb[0].rgbReserved = rgb[1].rgbReserved = 0;
874 }
875 else
876 {
877 RGBTRIPLE *rgb = (RGBTRIPLE *)(((BITMAPCOREHEADER *)pSrcInfo) + 1);
878
879 rgb[0].rgbtBlue = rgb[0].rgbtGreen = rgb[0].rgbtRed = 0x00;
880 rgb[1].rgbtBlue = rgb[1].rgbtGreen = rgb[1].rgbtRed = 0xff;
881 }
882
883 /* Create the AND bitmap */
884 if (do_stretch)
885 {
886 hAndBits = CreateBitmap(width, height, 1, 1, NULL);
887
888 if (!stretch_blt_icon(hAndBits, pDestInfo, pSrcInfo, xbits))
889 {
890 DeleteObject(hAndBits);
891 hAndBits = 0;
892 }
893 }
894 else
895 {
896 hAndBits = CreateBitmap(width, height, 1, 1, NULL);
897 SetDIBits(screen_dc, hAndBits, 0, height,
898 xbits, pSrcInfo, DIB_RGB_COLORS);
899 }
900
901 if( !hAndBits )
902 {
903 DeleteObject( hXorBits );
904 hXorBits = 0;
905 }
906 }
907 }
908
909 HeapFree( GetProcessHeap(), 0, pSrcInfo );
910 HeapFree( GetProcessHeap(), 0, pDestInfo );
911 }
912
913 if( !hXorBits || !hAndBits )
914 {
915 WARN_(cursor)("\tunable to create an icon bitmap.\n");
916 return 0;
917 }
918
919 /* Now create the CURSORICONINFO structure */
920 GetObjectA( hXorBits, sizeof(bmpXor), &bmpXor );
921 GetObjectA( hAndBits, sizeof(bmpAnd), &bmpAnd );
922 sizeXor = bmpXor.bmHeight * bmpXor.bmWidthBytes;
923 sizeAnd = bmpAnd.bmHeight * bmpAnd.bmWidthBytes;
924
925 hObj = alloc_icon_handle( sizeof(CURSORICONINFO) + sizeXor + sizeAnd );
926 if (hObj)
927 {
928 CURSORICONINFO *info = get_icon_ptr( hObj );
929
930 info->ptHotSpot.x = hotspot.x;
931 info->ptHotSpot.y = hotspot.y;
932 info->nWidth = bmpXor.bmWidth;
933 info->nHeight = bmpXor.bmHeight;
934 info->nWidthBytes = bmpXor.bmWidthBytes;
935 info->bPlanes = bmpXor.bmPlanes;
936 info->bBitsPerPixel = bmpXor.bmBitsPixel;
937
938 /* Transfer the bitmap bits to the CURSORICONINFO structure */
939
940 GetBitmapBits( hAndBits, sizeAnd, info + 1 );
941 GetBitmapBits( hXorBits, sizeXor, (char *)(info + 1) + sizeAnd );
942 release_icon_ptr( hObj, info );
943 USER_Driver->pCreateCursorIcon( hObj, info );
944 }
945
946 DeleteObject( hAndBits );
947 DeleteObject( hXorBits );
948 return hObj;
949 }
950
951
952 /**********************************************************************
953 * .ANI cursor support
954 */
955 #define RIFF_FOURCC( c0, c1, c2, c3 ) \
956 ( (DWORD)(BYTE)(c0) | ( (DWORD)(BYTE)(c1) << 8 ) | \
957 ( (DWORD)(BYTE)(c2) << 16 ) | ( (DWORD)(BYTE)(c3) << 24 ) )
958
959 #define ANI_RIFF_ID RIFF_FOURCC('R', 'I', 'F', 'F')
960 #define ANI_LIST_ID RIFF_FOURCC('L', 'I', 'S', 'T')
961 #define ANI_ACON_ID RIFF_FOURCC('A', 'C', 'O', 'N')
962 #define ANI_anih_ID RIFF_FOURCC('a', 'n', 'i', 'h')
963 #define ANI_seq__ID RIFF_FOURCC('s', 'e', 'q', ' ')
964 #define ANI_fram_ID RIFF_FOURCC('f', 'r', 'a', 'm')
965
966 #define ANI_FLAG_ICON 0x1
967 #define ANI_FLAG_SEQUENCE 0x2
968
969 typedef struct {
970 DWORD header_size;
971 DWORD num_frames;
972 DWORD num_steps;
973 DWORD width;
974 DWORD height;
975 DWORD bpp;
976 DWORD num_planes;
977 DWORD display_rate;
978 DWORD flags;
979 } ani_header;
980
981 typedef struct {
982 DWORD data_size;
983 const unsigned char *data;
984 } riff_chunk_t;
985
986 static void dump_ani_header( const ani_header *header )
987 {
988 TRACE(" header size: %d\n", header->header_size);
989 TRACE(" frames: %d\n", header->num_frames);
990 TRACE(" steps: %d\n", header->num_steps);
991 TRACE(" width: %d\n", header->width);
992 TRACE(" height: %d\n", header->height);
993 TRACE(" bpp: %d\n", header->bpp);
994 TRACE(" planes: %d\n", header->num_planes);
995 TRACE(" display rate: %d\n", header->display_rate);
996 TRACE(" flags: 0x%08x\n", header->flags);
997 }
998
999
1000 /*
1001 * RIFF:
1002 * DWORD "RIFF"
1003 * DWORD size
1004 * DWORD riff_id
1005 * BYTE[] data
1006 *
1007 * LIST:
1008 * DWORD "LIST"
1009 * DWORD size
1010 * DWORD list_id
1011 * BYTE[] data
1012 *
1013 * CHUNK:
1014 * DWORD chunk_id
1015 * DWORD size
1016 * BYTE[] data
1017 */
1018 static void riff_find_chunk( DWORD chunk_id, DWORD chunk_type, const riff_chunk_t *parent_chunk, riff_chunk_t *chunk )
1019 {
1020 const unsigned char *ptr = parent_chunk->data;
1021 const unsigned char *end = parent_chunk->data + (parent_chunk->data_size - (2 * sizeof(DWORD)));
1022
1023 if (chunk_type == ANI_LIST_ID || chunk_type == ANI_RIFF_ID) end -= sizeof(DWORD);
1024
1025 while (ptr < end)
1026 {
1027 if ((!chunk_type && *(const DWORD *)ptr == chunk_id )
1028 || (chunk_type && *(const DWORD *)ptr == chunk_type && *((const DWORD *)ptr + 2) == chunk_id ))
1029 {
1030 ptr += sizeof(DWORD);
1031 chunk->data_size = (*(const DWORD *)ptr + 1) & ~1;
1032 ptr += sizeof(DWORD);
1033 if (chunk_type == ANI_LIST_ID || chunk_type == ANI_RIFF_ID) ptr += sizeof(DWORD);
1034 chunk->data = ptr;
1035
1036 return;
1037 }
1038
1039 ptr += sizeof(DWORD);
1040 ptr += (*(const DWORD *)ptr + 1) & ~1;
1041 ptr += sizeof(DWORD);
1042 }
1043 }
1044
1045
1046 /*
1047 * .ANI layout:
1048 *
1049 * RIFF:'ACON' RIFF chunk
1050 * |- CHUNK:'anih' Header
1051 * |- CHUNK:'seq ' Sequence information (optional)
1052 * \- LIST:'fram' Frame list
1053 * |- CHUNK:icon Cursor frames
1054 * |- CHUNK:icon
1055 * |- ...
1056 * \- CHUNK:icon
1057 */
1058 static HCURSOR CURSORICON_CreateIconFromANI( const LPBYTE bits, DWORD bits_size,
1059 INT width, INT height, INT depth )
1060 {
1061 HCURSOR cursor;
1062 ani_header header = {0};
1063 LPBYTE frame_bits = 0;
1064 POINT16 hotspot;
1065 CURSORICONFILEDIRENTRY *entry;
1066
1067 riff_chunk_t root_chunk = { bits_size, bits };
1068 riff_chunk_t ACON_chunk = {0};
1069 riff_chunk_t anih_chunk = {0};
1070 riff_chunk_t fram_chunk = {0};
1071 const unsigned char *icon_data;
1072
1073 TRACE("bits %p, bits_size %d\n", bits, bits_size);
1074
1075 if (!bits) return 0;
1076
1077 riff_find_chunk( ANI_ACON_ID, ANI_RIFF_ID, &root_chunk, &ACON_chunk );
1078 if (!ACON_chunk.data)
1079 {
1080 ERR("Failed to get root chunk.\n");
1081 return 0;
1082 }
1083
1084 riff_find_chunk( ANI_anih_ID, 0, &ACON_chunk, &anih_chunk );
1085 if (!anih_chunk.data)
1086 {
1087 ERR("Failed to get 'anih' chunk.\n");
1088 return 0;
1089 }
1090 memcpy( &header, anih_chunk.data, sizeof(header) );
1091 dump_ani_header( &header );
1092
1093 riff_find_chunk( ANI_fram_ID, ANI_LIST_ID, &ACON_chunk, &fram_chunk );
1094 if (!fram_chunk.data)
1095 {
1096 ERR("Failed to get icon list.\n");
1097 return 0;
1098 }
1099
1100 /* FIXME: For now, just load the first frame. Before we can load all the
1101 * frames, we need to write the needed code in wineserver, etc. to handle
1102 * cursors. Once this code is written, we can extend it to support .ani
1103 * cursors and then update user32 and winex11.drv to load all frames.
1104 *
1105 * Hopefully this will at least make some games (C&C3, etc.) more playable
1106 * in the meantime.
1107 */
1108 FIXME("Loading all frames for .ani cursors not implemented.\n");
1109 icon_data = fram_chunk.data + (2 * sizeof(DWORD));
1110
1111 entry = CURSORICON_FindBestIconFile( (CURSORICONFILEDIR *) icon_data,
1112 width, height, depth );
1113
1114 frame_bits = HeapAlloc( GetProcessHeap(), 0, entry->dwDIBSize );
1115 memcpy( frame_bits, icon_data + entry->dwDIBOffset, entry->dwDIBSize );
1116
1117 if (!header.width || !header.height)
1118 {
1119 header.width = entry->bWidth;
1120 header.height = entry->bHeight;
1121 }
1122
1123 hotspot.x = entry->xHotspot;
1124 hotspot.y = entry->yHotspot;
1125
1126 cursor = CURSORICON_CreateIconFromBMI( (BITMAPINFO *) frame_bits, hotspot,
1127 FALSE, 0x00030000, header.width, header.height, 0 );
1128
1129 HeapFree( GetProcessHeap(), 0, frame_bits );
1130
1131 return cursor;
1132 }
1133
1134
1135 /**********************************************************************
1136 * CreateIconFromResourceEx (USER32.@)
1137 *
1138 * FIXME: Convert to mono when cFlag is LR_MONOCHROME. Do something
1139 * with cbSize parameter as well.
1140 */
1141 HICON WINAPI CreateIconFromResourceEx( LPBYTE bits, UINT cbSize,
1142 BOOL bIcon, DWORD dwVersion,
1143 INT width, INT height,
1144 UINT cFlag )
1145 {
1146 POINT16 hotspot;
1147 BITMAPINFO *bmi;
1148
1149 hotspot.x = ICON_HOTSPOT;
1150 hotspot.y = ICON_HOTSPOT;
1151
1152 TRACE_(cursor)("%p (%u bytes), ver %08x, %ix%i %s %s\n",
1153 bits, cbSize, dwVersion, width, height,
1154 bIcon ? "icon" : "cursor", (cFlag & LR_MONOCHROME) ? "mono" : "" );
1155
1156 if (bIcon)
1157 bmi = (BITMAPINFO *)bits;
1158 else /* get the hotspot */
1159 {
1160 POINT16 *pt = (POINT16 *)bits;
1161 hotspot = *pt;
1162 bmi = (BITMAPINFO *)(pt + 1);
1163 }
1164
1165 return CURSORICON_CreateIconFromBMI( bmi, hotspot, bIcon, dwVersion,
1166 width, height, cFlag );
1167 }
1168
1169
1170 /**********************************************************************
1171 * CreateIconFromResource (USER32.@)
1172 */
1173 HICON WINAPI CreateIconFromResource( LPBYTE bits, UINT cbSize,
1174 BOOL bIcon, DWORD dwVersion)
1175 {
1176 return CreateIconFromResourceEx( bits, cbSize, bIcon, dwVersion, 0,0,0);
1177 }
1178
1179
1180 static HICON CURSORICON_LoadFromFile( LPCWSTR filename,
1181 INT width, INT height, INT depth,
1182 BOOL fCursor, UINT loadflags)
1183 {
1184 CURSORICONFILEDIRENTRY *entry;
1185 CURSORICONFILEDIR *dir;
1186 DWORD filesize = 0;
1187 HICON hIcon = 0;
1188 LPBYTE bits;
1189 POINT16 hotspot;
1190
1191 TRACE("loading %s\n", debugstr_w( filename ));
1192
1193 bits = map_fileW( filename, &filesize );
1194 if (!bits)
1195 return hIcon;
1196
1197 /* Check for .ani. */
1198 if (memcmp( bits, "RIFF", 4 ) == 0)
1199 {
1200 hIcon = CURSORICON_CreateIconFromANI( bits, filesize, width, height,
1201 depth );
1202 goto end;
1203 }
1204
1205 dir = (CURSORICONFILEDIR*) bits;
1206 if ( filesize < sizeof(*dir) )
1207 goto end;
1208
1209 if ( filesize < (sizeof(*dir) + sizeof(dir->idEntries[0])*(dir->idCount-1)) )
1210 goto end;
1211
1212 if ( fCursor )
1213 entry = CURSORICON_FindBestCursorFile( dir, width, height, depth );
1214 else
1215 entry = CURSORICON_FindBestIconFile( dir, width, height, depth );
1216
1217 if ( !entry )
1218 goto end;
1219
1220 /* check that we don't run off the end of the file */
1221 if ( entry->dwDIBOffset > filesize )
1222 goto end;
1223 if ( entry->dwDIBOffset + entry->dwDIBSize > filesize )
1224 goto end;
1225
1226 /* Set the actual hotspot for cursors and ICON_HOTSPOT for icons. */
1227 if ( fCursor )
1228 {
1229 hotspot.x = entry->xHotspot;
1230 hotspot.y = entry->yHotspot;
1231 }
1232 else
1233 {
1234 hotspot.x = ICON_HOTSPOT;
1235 hotspot.y = ICON_HOTSPOT;
1236 }
1237 hIcon = CURSORICON_CreateIconFromBMI( (BITMAPINFO *)&bits[entry->dwDIBOffset],
1238 hotspot, !fCursor, 0x00030000,
1239 width, height, loadflags );
1240 end:
1241 TRACE("loaded %s -> %p\n", debugstr_w( filename ), hIcon );
1242 UnmapViewOfFile( bits );
1243 return hIcon;
1244 }
1245
1246 /**********************************************************************
1247 * CURSORICON_Load
1248 *
1249 * Load a cursor or icon from resource or file.
1250 */
1251 static HICON CURSORICON_Load(HINSTANCE hInstance, LPCWSTR name,
1252 INT width, INT height, INT depth,
1253 BOOL fCursor, UINT loadflags)
1254 {
1255 HANDLE handle = 0;
1256 HICON hIcon = 0;
1257 HRSRC hRsrc, hGroupRsrc;
1258 CURSORICONDIR *dir;
1259 CURSORICONDIRENTRY *dirEntry;
1260 LPBYTE bits;
1261 WORD wResId;
1262 DWORD dwBytesInRes;
1263
1264 TRACE("%p, %s, %dx%d, depth %d, fCursor %d, flags 0x%04x\n",
1265 hInstance, debugstr_w(name), width, height, depth, fCursor, loadflags);
1266
1267 if ( loadflags & LR_LOADFROMFILE ) /* Load from file */
1268 return CURSORICON_LoadFromFile( name, width, height, depth, fCursor, loadflags );
1269
1270 if (!hInstance) hInstance = user32_module; /* Load OEM cursor/icon */
1271
1272 /* don't cache 16-bit instances (FIXME: should never get 16-bit instances in the first place) */
1273 if ((ULONG_PTR)hInstance >> 16 == 0) loadflags &= ~LR_SHARED;
1274
1275 /* Get directory resource ID */
1276
1277 if (!(hRsrc = FindResourceW( hInstance, name,
1278 (LPWSTR)(fCursor ? RT_GROUP_CURSOR : RT_GROUP_ICON) )))
1279 return 0;
1280 hGroupRsrc = hRsrc;
1281
1282 /* Find the best entry in the directory */
1283
1284 if (!(handle = LoadResource( hInstance, hRsrc ))) return 0;
1285 if (!(dir = LockResource( handle ))) return 0;
1286 if (fCursor)
1287 dirEntry = CURSORICON_FindBestCursorRes( dir, width, height, depth );
1288 else
1289 dirEntry = CURSORICON_FindBestIconRes( dir, width, height, depth );
1290 if (!dirEntry) return 0;
1291 wResId = dirEntry->wResId;
1292 dwBytesInRes = dirEntry->dwBytesInRes;
1293 FreeResource( handle );
1294
1295 /* Load the resource */
1296
1297 if (!(hRsrc = FindResourceW(hInstance,MAKEINTRESOURCEW(wResId),
1298 (LPWSTR)(fCursor ? RT_CURSOR : RT_ICON) ))) return 0;
1299
1300 /* If shared icon, check whether it was already loaded */
1301 if ( (loadflags & LR_SHARED)
1302 && (hIcon = CURSORICON_FindSharedIcon( hInstance, hRsrc ) ) != 0 )
1303 return hIcon;
1304
1305 if (!(handle = LoadResource( hInstance, hRsrc ))) return 0;
1306 bits = LockResource( handle );
1307 hIcon = CreateIconFromResourceEx( bits, dwBytesInRes,
1308 !fCursor, 0x00030000, width, height, loadflags);
1309 FreeResource( handle );
1310
1311 /* If shared icon, add to icon cache */
1312
1313 if ( hIcon && (loadflags & LR_SHARED) )
1314 CURSORICON_AddSharedIcon( hInstance, hRsrc, hGroupRsrc, hIcon );
1315
1316 return hIcon;
1317 }
1318
1319
1320 /*************************************************************************
1321 * CURSORICON_ExtCopy
1322 *
1323 * Copies an Image from the Cache if LR_COPYFROMRESOURCE is specified
1324 *
1325 * PARAMS
1326 * Handle [I] handle to an Image
1327 * nType [I] Type of Handle (IMAGE_CURSOR | IMAGE_ICON)
1328 * iDesiredCX [I] The Desired width of the Image
1329 * iDesiredCY [I] The desired height of the Image
1330 * nFlags [I] The flags from CopyImage
1331 *
1332 * RETURNS
1333 * Success: The new handle of the Image
1334 *
1335 * NOTES
1336 * LR_COPYDELETEORG and LR_MONOCHROME are currently not implemented.
1337 * LR_MONOCHROME should be implemented by CreateIconFromResourceEx.
1338 * LR_COPYFROMRESOURCE will only work if the Image is in the Cache.
1339 *
1340 *
1341 */
1342
1343 static HICON CURSORICON_ExtCopy(HICON hIcon, UINT nType,
1344 INT iDesiredCX, INT iDesiredCY,
1345 UINT nFlags)
1346 {
1347 HICON hNew=0;
1348
1349 TRACE_(icon)("hIcon %p, nType %u, iDesiredCX %i, iDesiredCY %i, nFlags %u\n",
1350 hIcon, nType, iDesiredCX, iDesiredCY, nFlags);
1351
1352 if(hIcon == 0)
1353 {
1354 return 0;
1355 }
1356
1357 /* Best Fit or Monochrome */
1358 if( (nFlags & LR_COPYFROMRESOURCE
1359 && (iDesiredCX > 0 || iDesiredCY > 0))
1360 || nFlags & LR_MONOCHROME)
1361 {
1362 ICONCACHE* pIconCache = CURSORICON_FindCache(hIcon);
1363
1364 /* Not Found in Cache, then do a straight copy
1365 */
1366 if(pIconCache == NULL)
1367 {
1368 hNew = CopyIcon( hIcon );
1369 if(nFlags & LR_COPYFROMRESOURCE)
1370 {
1371 TRACE_(icon)("LR_COPYFROMRESOURCE: Failed to load from cache\n");
1372 }
1373 }
1374 else
1375 {
1376 int iTargetCY = iDesiredCY, iTargetCX = iDesiredCX;
1377 LPBYTE pBits;
1378 HANDLE hMem;
1379 HRSRC hRsrc;
1380 DWORD dwBytesInRes;
1381 WORD wResId;
1382 CURSORICONDIR *pDir;
1383 CURSORICONDIRENTRY *pDirEntry;
1384 BOOL bIsIcon = (nType == IMAGE_ICON);
1385
1386 /* Completing iDesiredCX CY for Monochrome Bitmaps if needed
1387 */
1388 if(((nFlags & LR_MONOCHROME) && !(nFlags & LR_COPYFROMRESOURCE))
1389 || (iDesiredCX == 0 && iDesiredCY == 0))
1390 {
1391 iDesiredCY = GetSystemMetrics(bIsIcon ?
1392 SM_CYICON : SM_CYCURSOR);
1393 iDesiredCX = GetSystemMetrics(bIsIcon ?
1394 SM_CXICON : SM_CXCURSOR);
1395 }
1396
1397 /* Retrieve the CURSORICONDIRENTRY
1398 */
1399 if (!(hMem = LoadResource( pIconCache->hModule ,
1400 pIconCache->hGroupRsrc)))
1401 {
1402 return 0;
1403 }
1404 if (!(pDir = LockResource( hMem )))
1405 {
1406 return 0;
1407 }
1408
1409 /* Find Best Fit
1410 */
1411 if(bIsIcon)
1412 {
1413 pDirEntry = CURSORICON_FindBestIconRes(
1414 pDir, iDesiredCX, iDesiredCY, 256 );
1415 }
1416 else
1417 {
1418 pDirEntry = CURSORICON_FindBestCursorRes(
1419 pDir, iDesiredCX, iDesiredCY, 1);
1420 }
1421
1422 wResId = pDirEntry->wResId;
1423 dwBytesInRes = pDirEntry->dwBytesInRes;
1424 FreeResource(hMem);
1425
1426 TRACE_(icon)("ResID %u, BytesInRes %u, Width %d, Height %d DX %d, DY %d\n",
1427 wResId, dwBytesInRes, pDirEntry->ResInfo.icon.bWidth,
1428 pDirEntry->ResInfo.icon.bHeight, iDesiredCX, iDesiredCY);
1429
1430 /* Get the Best Fit
1431 */
1432 if (!(hRsrc = FindResourceW(pIconCache->hModule ,
1433 MAKEINTRESOURCEW(wResId), (LPWSTR)(bIsIcon ? RT_ICON : RT_CURSOR))))
1434 {
1435 return 0;
1436 }
1437 if (!(hMem = LoadResource( pIconCache->hModule , hRsrc )))
1438 {
1439 return 0;
1440 }
1441
1442 pBits = LockResource( hMem );
1443
1444 if(nFlags & LR_DEFAULTSIZE)
1445 {
1446 iTargetCY = GetSystemMetrics(SM_CYICON);
1447 iTargetCX = GetSystemMetrics(SM_CXICON);
1448 }
1449
1450 /* Create a New Icon with the proper dimension
1451 */
1452 hNew = CreateIconFromResourceEx( pBits, dwBytesInRes,
1453 bIsIcon, 0x00030000, iTargetCX, iTargetCY, nFlags);
1454 FreeResource(hMem);
1455 }
1456 }
1457 else hNew = CopyIcon( hIcon );
1458 return hNew;
1459 }
1460
1461
1462 /***********************************************************************
1463 * CreateCursor (USER32.@)
1464 */
1465 HCURSOR WINAPI CreateCursor( HINSTANCE hInstance,
1466 INT xHotSpot, INT yHotSpot,
1467 INT nWidth, INT nHeight,
1468 LPCVOID lpANDbits, LPCVOID lpXORbits )
1469 {
1470 ICONINFO info;
1471 HCURSOR hCursor;
1472
1473 TRACE_(cursor)("%dx%d spot=%d,%d xor=%p and=%p\n",
1474 nWidth, nHeight, xHotSpot, yHotSpot, lpXORbits, lpANDbits);
1475
1476 info.fIcon = FALSE;
1477 info.xHotspot = xHotSpot;
1478 info.yHotspot = yHotSpot;
1479 info.hbmMask = CreateBitmap( nWidth, nHeight, 1, 1, lpANDbits );
1480 info.hbmColor = CreateBitmap( nWidth, nHeight, 1, 1, lpXORbits );
1481 hCursor = CreateIconIndirect( &info );
1482 DeleteObject( info.hbmMask );
1483 DeleteObject( info.hbmColor );
1484 return hCursor;
1485 }
1486
1487
1488 /***********************************************************************
1489 * CreateIcon (USER32.@)
1490 *
1491 * Creates an icon based on the specified bitmaps. The bitmaps must be
1492 * provided in a device dependent format and will be resized to
1493 * (SM_CXICON,SM_CYICON) and depth converted to match the screen's color
1494 * depth. The provided bitmaps must be top-down bitmaps.
1495 * Although Windows does not support 15bpp(*) this API must support it
1496 * for Winelib applications.
1497 *
1498 * (*) Windows does not support 15bpp but it supports the 555 RGB 16bpp
1499 * format!
1500 *
1501 * RETURNS
1502 * Success: handle to an icon
1503 * Failure: NULL
1504 *
1505 * FIXME: Do we need to resize the bitmaps?
1506 */
1507 HICON WINAPI CreateIcon(
1508 HINSTANCE hInstance, /* [in] the application's hInstance */
1509 INT nWidth, /* [in] the width of the provided bitmaps */
1510 INT nHeight, /* [in] the height of the provided bitmaps */
1511 BYTE bPlanes, /* [in] the number of planes in the provided bitmaps */
1512 BYTE bBitsPixel, /* [in] the number of bits per pixel of the lpXORbits bitmap */
1513 LPCVOID lpANDbits, /* [in] a monochrome bitmap representing the icon's mask */
1514 LPCVOID lpXORbits) /* [in] the icon's 'color' bitmap */
1515 {
1516 ICONINFO iinfo;
1517 HICON hIcon;
1518
1519 TRACE_(icon)("%dx%d, planes %d, bpp %d, xor %p, and %p\n",
1520 nWidth, nHeight, bPlanes, bBitsPixel, lpXORbits, lpANDbits);
1521
1522 iinfo.fIcon = TRUE;
1523 iinfo.xHotspot = ICON_HOTSPOT;
1524 iinfo.yHotspot = ICON_HOTSPOT;
1525 iinfo.hbmMask = CreateBitmap( nWidth, nHeight, 1, 1, lpANDbits );
1526 iinfo.hbmColor = CreateBitmap( nWidth, nHeight, bPlanes, bBitsPixel, lpXORbits );
1527
1528 hIcon = CreateIconIndirect( &iinfo );
1529
1530 DeleteObject( iinfo.hbmMask );
1531 DeleteObject( iinfo.hbmColor );
1532
1533 return hIcon;
1534 }
1535
1536
1537 /***********************************************************************
1538 * CopyIcon (USER32.@)
1539 */
1540 HICON WINAPI CopyIcon( HICON hIcon )
1541 {
1542 CURSORICONINFO *ptrOld, *ptrNew;
1543 int size;
1544 HICON hNew;
1545
1546 if (!(ptrOld = get_icon_ptr( hIcon ))) return 0;
1547 size = sizeof(CURSORICONINFO);
1548 size += ptrOld->nHeight * get_bitmap_width_bytes( ptrOld->nWidth, 1 ); /* and bitmap */
1549 size += ptrOld->nHeight * ptrOld->nWidthBytes; /* xor bitmap */
1550 hNew = alloc_icon_handle( size );
1551 ptrNew = get_icon_ptr( hNew );
1552 memcpy( ptrNew, ptrOld, size );
1553 release_icon_ptr( hIcon, ptrOld );
1554 release_icon_ptr( hNew, ptrNew );
1555 USER_Driver->pCreateCursorIcon( hNew, ptrNew );
1556 return hNew;
1557 }
1558
1559
1560 /***********************************************************************
1561 * DestroyIcon (USER32.@)
1562 */
1563 BOOL WINAPI DestroyIcon( HICON hIcon )
1564 {
1565 TRACE_(icon)("%p\n", hIcon );
1566
1567 if (CURSORICON_DelSharedIcon( hIcon ) == -1)
1568 free_icon_handle( hIcon );
1569 return TRUE;
1570 }
1571
1572
1573 /***********************************************************************
1574 * DestroyCursor (USER32.@)
1575 */
1576 BOOL WINAPI DestroyCursor( HCURSOR hCursor )
1577 {
1578 if (GetCursor() == hCursor)
1579 {
1580 WARN_(cursor)("Destroying active cursor!\n" );
1581 return FALSE;
1582 }
1583 return DestroyIcon( hCursor );
1584 }
1585
1586 /***********************************************************************
1587 * bitmap_has_alpha_channel
1588 *
1589 * Analyses bits bitmap to determine if alpha data is present.
1590 *
1591 * PARAMS
1592 * bpp [I] The bits-per-pixel of the bitmap
1593 * bitmapBits [I] A pointer to the bitmap data
1594 * bitmapLength [I] The length of the bitmap in bytes
1595 *
1596 * RETURNS
1597 * TRUE if an alpha channel is discovered, FALSE
1598 *
1599 * NOTE
1600 * Windows' behaviour is that if the icon bitmap is 32-bit and at
1601 * least one pixel has a non-zero alpha, then the bitmap is a
1602 * treated as having an alpha channel transparentcy. Otherwise,
1603 * it's treated as being completely opaque.
1604 *
1605 */
1606 static BOOL bitmap_has_alpha_channel( int bpp, unsigned char *bitmapBits,
1607 unsigned int bitmapLength )
1608 {
1609 /* Detect an alpha channel by looking for non-zero alpha pixels */
1610 if(bpp == 32)
1611 {
1612 unsigned int offset;
1613 for(offset = 3; offset < bitmapLength; offset += 4)
1614 {
1615 if(bitmapBits[offset] != 0)
1616 {
1617 return TRUE;
1618 }
1619 }
1620 }
1621 return FALSE;
1622 }
1623
1624 /***********************************************************************
1625 * premultiply_alpha_channel
1626 *
1627 * Premultiplies the color channels of a 32-bit bitmap by the alpha
1628 * channel. This is a necessary step that must be carried out on
1629 * the image before it is passed to GdiAlphaBlend
1630 *
1631 * PARAMS
1632 * destBitmap [I] The destination bitmap buffer
1633 * srcBitmap [I] The source bitmap buffer
1634 * bitmapLength [I] The length of the bitmap in bytes
1635 *
1636 */
1637 static void premultiply_alpha_channel( unsigned char *destBitmap,
1638 unsigned char *srcBitmap,
1639 unsigned int bitmapLength )
1640 {
1641 unsigned char *destPixel = destBitmap;
1642 unsigned char *srcPixel = srcBitmap;
1643
1644 while(destPixel < destBitmap + bitmapLength)
1645 {
1646 unsigned char alpha = srcPixel[3];
1647 *(destPixel++) = *(srcPixel++) * alpha / 255;
1648 *(destPixel++) = *(srcPixel++) * alpha / 255;
1649 *(destPixel++) = *(srcPixel++) * alpha / 255;
1650 *(destPixel++) = *(srcPixel++);
1651 }
1652 }
1653
1654 /***********************************************************************
1655 * DrawIcon (USER32.@)
1656 */
1657 BOOL WINAPI DrawIcon( HDC hdc, INT x, INT y, HICON hIcon )
1658 {
1659 return DrawIconEx( hdc, x, y, hIcon, 0, 0, 0, 0, DI_NORMAL | DI_COMPAT | DI_DEFAULTSIZE );
1660 }
1661
1662 /***********************************************************************
1663 * SetCursor (USER32.@)
1664 *
1665 * Set the cursor shape.
1666 *
1667 * RETURNS
1668 * A handle to the previous cursor shape.
1669 */
1670 HCURSOR WINAPI DECLSPEC_HOTPATCH SetCursor( HCURSOR hCursor /* [in] Handle of cursor to show */ )
1671 {
1672 HCURSOR hOldCursor;
1673 int show_count;
1674 BOOL ret;
1675
1676 TRACE("%p\n", hCursor);
1677
1678 SERVER_START_REQ( set_cursor )
1679 {
1680 req->flags = SET_CURSOR_HANDLE;
1681 req->handle = wine_server_user_handle( hCursor );
1682 if ((ret = !wine_server_call_err( req )))
1683 {
1684 hOldCursor = wine_server_ptr_handle( reply->prev_handle );
1685 show_count = reply->prev_count;
1686 }
1687 }
1688 SERVER_END_REQ;
1689
1690 if (!ret) return 0;
1691
1692 /* Change the cursor shape only if it is visible */
1693 if (show_count >= 0 && hOldCursor != hCursor) USER_Driver->pSetCursor( hCursor );
1694 return hOldCursor;
1695 }
1696
1697 /***********************************************************************
1698 * ShowCursor (USER32.@)
1699 */
1700 INT WINAPI DECLSPEC_HOTPATCH ShowCursor( BOOL bShow )
1701 {
1702 HCURSOR cursor;
1703 int increment = bShow ? 1 : -1;
1704 int count;
1705
1706 SERVER_START_REQ( set_cursor )
1707 {
1708 req->flags = SET_CURSOR_COUNT;
1709 req->show_count = increment;
1710 wine_server_call( req );
1711 cursor = wine_server_ptr_handle( reply->prev_handle );
1712 count = reply->prev_count + increment;
1713 }
1714 SERVER_END_REQ;
1715
1716 TRACE("%d, count=%d\n", bShow, count );
1717
1718 if (bShow && !count) USER_Driver->pSetCursor( cursor );
1719 else if (!bShow && count == -1) USER_Driver->pSetCursor( 0 );
1720
1721 return count;
1722 }
1723
1724 /***********************************************************************
1725 * GetCursor (USER32.@)
1726 */
1727 HCURSOR WINAPI GetCursor(void)
1728 {
1729 HCURSOR ret;
1730
1731 SERVER_START_REQ( set_cursor )
1732 {
1733 req->flags = 0;
1734 wine_server_call( req );
1735 ret = wine_server_ptr_handle( reply->prev_handle );
1736 }
1737 SERVER_END_REQ;
1738 return ret;
1739 }
1740
1741
1742 /***********************************************************************
1743 * ClipCursor (USER32.@)
1744 */
1745 BOOL WINAPI DECLSPEC_HOTPATCH ClipCursor( const RECT *rect )
1746 {
1747 RECT virt;
1748
1749 SetRect( &virt, 0, 0, GetSystemMetrics( SM_CXVIRTUALSCREEN ),
1750 GetSystemMetrics( SM_CYVIRTUALSCREEN ) );
1751 OffsetRect( &virt, GetSystemMetrics( SM_XVIRTUALSCREEN ),
1752 GetSystemMetrics( SM_YVIRTUALSCREEN ) );
1753
1754 TRACE( "Clipping to: %s was: %s screen: %s\n", wine_dbgstr_rect(rect),
1755 wine_dbgstr_rect(&CURSOR_ClipRect), wine_dbgstr_rect(&virt) );
1756
1757 if (!IntersectRect( &CURSOR_ClipRect, &virt, rect ))
1758 CURSOR_ClipRect = virt;
1759
1760 USER_Driver->pClipCursor( rect );
1761 return TRUE;
1762 }
1763
1764
1765 /***********************************************************************
1766 * GetClipCursor (USER32.@)
1767 */
1768 BOOL WINAPI DECLSPEC_HOTPATCH GetClipCursor( RECT *rect )
1769 {
1770 /* If this is first time - initialize the rect */
1771 if (IsRectEmpty( &CURSOR_ClipRect )) ClipCursor( NULL );
1772
1773 return CopyRect( rect, &CURSOR_ClipRect );
1774 }
1775
1776
1777 /***********************************************************************
1778 * SetSystemCursor (USER32.@)
1779 */
1780 BOOL WINAPI SetSystemCursor(HCURSOR hcur, DWORD id)
1781 {
1782 FIXME("(%p,%08x),stub!\n", hcur, id);
1783 return TRUE;
1784 }
1785
1786
1787 /**********************************************************************
1788 * LookupIconIdFromDirectoryEx (USER32.@)
1789 */
1790 INT WINAPI LookupIconIdFromDirectoryEx( LPBYTE xdir, BOOL bIcon,
1791 INT width, INT height, UINT cFlag )
1792 {
1793 CURSORICONDIR *dir = (CURSORICONDIR*)xdir;
1794 UINT retVal = 0;
1795 if( dir && !dir->idReserved && (dir->idType & 3) )
1796 {
1797 CURSORICONDIRENTRY* entry;
1798
1799 const HDC hdc = GetDC(0);
1800 const int depth = (cFlag & LR_MONOCHROME) ?
1801 1 : GetDeviceCaps(hdc, BITSPIXEL);
1802 ReleaseDC(0, hdc);
1803
1804 if( bIcon )
1805 entry = CURSORICON_FindBestIconRes( dir, width, height, depth );
1806 else
1807 entry = CURSORICON_FindBestCursorRes( dir, width, height, depth );
1808
1809 if( entry ) retVal = entry->wResId;
1810 }
1811 else WARN_(cursor)("invalid resource directory\n");
1812 return retVal;
1813 }
1814
1815 /**********************************************************************
1816 * LookupIconIdFromDirectory (USER32.@)
1817 */
1818 INT WINAPI LookupIconIdFromDirectory( LPBYTE dir, BOOL bIcon )
1819 {
1820 return LookupIconIdFromDirectoryEx( dir, bIcon,
1821 bIcon ? GetSystemMetrics(SM_CXICON) : GetSystemMetrics(SM_CXCURSOR),
1822 bIcon ? GetSystemMetrics(SM_CYICON) : GetSystemMetrics(SM_CYCURSOR), bIcon ? 0 : LR_MONOCHROME );
1823 }
1824
1825 /***********************************************************************
1826 * LoadCursorW (USER32.@)
1827 */
1828 HCURSOR WINAPI LoadCursorW(HINSTANCE hInstance, LPCWSTR name)
1829 {
1830 TRACE("%p, %s\n", hInstance, debugstr_w(name));
1831
1832 return LoadImageW( hInstance, name, IMAGE_CURSOR, 0, 0,
1833 LR_SHARED | LR_DEFAULTSIZE );
1834 }
1835
1836 /***********************************************************************
1837 * LoadCursorA (USER32.@)
1838 */
1839 HCURSOR WINAPI LoadCursorA(HINSTANCE hInstance, LPCSTR name)
1840 {
1841 TRACE("%p, %s\n", hInstance, debugstr_a(name));
1842
1843 return LoadImageA( hInstance, name, IMAGE_CURSOR, 0, 0,
1844 LR_SHARED | LR_DEFAULTSIZE );
1845 }
1846
1847 /***********************************************************************
1848 * LoadCursorFromFileW (USER32.@)
1849 */
1850 HCURSOR WINAPI LoadCursorFromFileW (LPCWSTR name)
1851 {
1852 TRACE("%s\n", debugstr_w(name));
1853
1854 return LoadImageW( 0, name, IMAGE_CURSOR, 0, 0,
1855 LR_LOADFROMFILE | LR_DEFAULTSIZE );
1856 }
1857
1858 /***********************************************************************
1859 * LoadCursorFromFileA (USER32.@)
1860 */
1861 HCURSOR WINAPI LoadCursorFromFileA (LPCSTR name)
1862 {
1863 TRACE("%s\n", debugstr_a(name));
1864
1865 return LoadImageA( 0, name, IMAGE_CURSOR, 0, 0,
1866 LR_LOADFROMFILE | LR_DEFAULTSIZE );
1867 }
1868
1869 /***********************************************************************
1870 * LoadIconW (USER32.@)
1871 */
1872 HICON WINAPI LoadIconW(HINSTANCE hInstance, LPCWSTR name)
1873 {
1874 TRACE("%p, %s\n", hInstance, debugstr_w(name));
1875
1876 return LoadImageW( hInstance, name, IMAGE_ICON, 0, 0,
1877 LR_SHARED | LR_DEFAULTSIZE );
1878 }
1879
1880 /***********************************************************************
1881 * LoadIconA (USER32.@)
1882 */
1883 HICON WINAPI LoadIconA(HINSTANCE hInstance, LPCSTR name)
1884 {
1885 TRACE("%p, %s\n", hInstance, debugstr_a(name));
1886
1887 return LoadImageA( hInstance, name, IMAGE_ICON, 0, 0,
1888 LR_SHARED | LR_DEFAULTSIZE );
1889 }
1890
1891 /**********************************************************************
1892 * GetIconInfo (USER32.@)
1893 */
1894 BOOL WINAPI GetIconInfo(HICON hIcon, PICONINFO iconinfo)
1895 {
1896 CURSORICONINFO *ciconinfo;
1897 INT height;
1898
1899 if (!(ciconinfo = get_icon_ptr( hIcon ))) return FALSE;
1900
1901 TRACE("%p => %dx%d, %d bpp\n", hIcon,
1902 ciconinfo->nWidth, ciconinfo->nHeight, ciconinfo->bBitsPerPixel);
1903
1904 if ( (ciconinfo->ptHotSpot.x == ICON_HOTSPOT) &&
1905 (ciconinfo->ptHotSpot.y == ICON_HOTSPOT) )
1906 {
1907 iconinfo->fIcon = TRUE;
1908 iconinfo->xHotspot = ciconinfo->nWidth / 2;
1909 iconinfo->yHotspot = ciconinfo->nHeight / 2;
1910 }
1911 else
1912 {
1913 iconinfo->fIcon = FALSE;
1914 iconinfo->xHotspot = ciconinfo->ptHotSpot.x;
1915 iconinfo->yHotspot = ciconinfo->ptHotSpot.y;
1916 }
1917
1918 height = ciconinfo->nHeight;
1919
1920 if (ciconinfo->bBitsPerPixel > 1)
1921 {
1922 iconinfo->hbmColor = CreateBitmap( ciconinfo->nWidth, ciconinfo->nHeight,
1923 ciconinfo->bPlanes, ciconinfo->bBitsPerPixel,
1924 (char *)(ciconinfo + 1)
1925 + ciconinfo->nHeight *
1926 get_bitmap_width_bytes (ciconinfo->nWidth,1) );
1927 }
1928 else
1929 {
1930 iconinfo->hbmColor = 0;
1931 height *= 2;
1932 }
1933
1934 iconinfo->hbmMask = CreateBitmap ( ciconinfo->nWidth, height,
1935 1, 1, ciconinfo + 1);
1936 release_icon_ptr( hIcon, ciconinfo );
1937
1938 return TRUE;
1939 }
1940
1941 /**********************************************************************
1942 * CreateIconIndirect (USER32.@)
1943 */
1944 HICON WINAPI CreateIconIndirect(PICONINFO iconinfo)
1945 {
1946 DIBSECTION bmpXor;
1947 BITMAP bmpAnd;
1948 HICON hObj;
1949 int xor_objsize = 0, sizeXor = 0, sizeAnd, planes, bpp;
1950
1951 TRACE("color %p, mask %p, hotspot %ux%u, fIcon %d\n",
1952 iconinfo->hbmColor, iconinfo->hbmMask,
1953 iconinfo->xHotspot, iconinfo->yHotspot, iconinfo->fIcon);
1954
1955 if (!iconinfo->hbmMask) return 0;
1956
1957 planes = GetDeviceCaps( screen_dc, PLANES );
1958 bpp = GetDeviceCaps( screen_dc, BITSPIXEL );
1959
1960 if (iconinfo->hbmColor)
1961 {
1962 xor_objsize = GetObjectW( iconinfo->hbmColor, sizeof(bmpXor), &bmpXor );
1963 TRACE("color: width %d, height %d, width bytes %d, planes %u, bpp %u\n",
1964 bmpXor.dsBm.bmWidth, bmpXor.dsBm.bmHeight, bmpXor.dsBm.bmWidthBytes,
1965 bmpXor.dsBm.bmPlanes, bmpXor.dsBm.bmBitsPixel);
1966 /* we can use either depth 1 or screen depth for xor bitmap */
1967 if (bmpXor.dsBm.bmPlanes == 1 && bmpXor.dsBm.bmBitsPixel == 1) planes = bpp = 1;
1968 sizeXor = bmpXor.dsBm.bmHeight * planes * get_bitmap_width_bytes( bmpXor.dsBm.bmWidth, bpp );
1969 }
1970 GetObjectW( iconinfo->hbmMask, sizeof(bmpAnd), &bmpAnd );
1971 TRACE("mask: width %d, height %d, width bytes %d, planes %u, bpp %u\n",
1972 bmpAnd.bmWidth, bmpAnd.bmHeight, bmpAnd.bmWidthBytes,
1973 bmpAnd.bmPlanes, bmpAnd.bmBitsPixel);
1974
1975 sizeAnd = bmpAnd.bmHeight * get_bitmap_width_bytes(bmpAnd.bmWidth, 1);
1976
1977 hObj = alloc_icon_handle( sizeof(CURSORICONINFO) + sizeXor + sizeAnd );
1978 if (hObj)
1979 {
1980 CURSORICONINFO *info = get_icon_ptr( hObj );
1981
1982 /* If we are creating an icon, the hotspot is unused */
1983 if (iconinfo->fIcon)
1984 {
1985 info->ptHotSpot.x = ICON_HOTSPOT;
1986 info->ptHotSpot.y = ICON_HOTSPOT;
1987 }
1988 else
1989 {
1990 info->ptHotSpot.x = iconinfo->xHotspot;
1991 info->ptHotSpot.y = iconinfo->yHotspot;
1992 }
1993
1994 if (iconinfo->hbmColor)
1995 {
1996 info->nWidth = bmpXor.dsBm.bmWidth;
1997 info->nHeight = bmpXor.dsBm.bmHeight;
1998 info->nWidthBytes = bmpXor.dsBm.bmWidthBytes;
1999 info->bPlanes = planes;
2000 info->bBitsPerPixel = bpp;
2001 }
2002 else
2003 {
2004 info->nWidth = bmpAnd.bmWidth;
2005 info->nHeight = bmpAnd.bmHeight / 2;
2006 info->nWidthBytes = get_bitmap_width_bytes(bmpAnd.bmWidth, 1);
2007 info->bPlanes = 1;
2008 info->bBitsPerPixel = 1;
2009 }
2010
2011 /* Transfer the bitmap bits to the CURSORICONINFO structure */
2012
2013 /* Some apps pass a color bitmap as a mask, convert it to b/w */
2014 if (bmpAnd.bmBitsPixel == 1)
2015 {
2016 GetBitmapBits( iconinfo->hbmMask, sizeAnd, info + 1 );
2017 }
2018 else
2019 {
2020 HDC hdc_mem, hdc_mem2;
2021 HBITMAP hbmp_mem_old, hbmp_mem2_old, hbmp_mono;
2022
2023 hdc_mem = CreateCompatibleDC( 0 );
2024 hdc_mem2 = CreateCompatibleDC( 0 );
2025
2026 hbmp_mono = CreateBitmap( bmpAnd.bmWidth, bmpAnd.bmHeight, 1, 1, NULL );
2027
2028 hbmp_mem_old = SelectObject( hdc_mem, iconinfo->hbmMask );
2029 hbmp_mem2_old = SelectObject( hdc_mem2, hbmp_mono );
2030
2031 BitBlt( hdc_mem2, 0, 0, bmpAnd.bmWidth, bmpAnd.bmHeight, hdc_mem, 0, 0, SRCCOPY );
2032
2033 SelectObject( hdc_mem, hbmp_mem_old );
2034 SelectObject( hdc_mem2, hbmp_mem2_old );
2035
2036 DeleteDC( hdc_mem );
2037 DeleteDC( hdc_mem2 );
2038
2039 GetBitmapBits( hbmp_mono, sizeAnd, info + 1 );
2040 DeleteObject( hbmp_mono );
2041 }
2042
2043 if (iconinfo->hbmColor)
2044 {
2045 char *dst_bits = (char*)(info + 1) + sizeAnd;
2046
2047 if (bmpXor.dsBm.bmPlanes == planes && bmpXor.dsBm.bmBitsPixel == bpp)
2048 GetBitmapBits( iconinfo->hbmColor, sizeXor, dst_bits );
2049 else
2050 {
2051 BITMAPINFO bminfo;
2052 int dib_width = get_dib_width_bytes( info->nWidth, info->bBitsPerPixel );
2053 int bitmap_width = get_bitmap_width_bytes( info->nWidth, info->bBitsPerPixel );
2054
2055 bminfo.bmiHeader.biSize = sizeof(bminfo);
2056 bminfo.bmiHeader.biWidth = info->nWidth;
2057 bminfo.bmiHeader.biHeight = info->nHeight;
2058 bminfo.bmiHeader.biPlanes = info->bPlanes;
2059 bminfo.bmiHeader.biBitCount = info->bBitsPerPixel;
2060 bminfo.bmiHeader.biCompression = BI_RGB;
2061 bminfo.bmiHeader.biSizeImage = info->nHeight * dib_width;
2062 bminfo.bmiHeader.biXPelsPerMeter = 0;
2063 bminfo.bmiHeader.biYPelsPerMeter = 0;
2064 bminfo.bmiHeader.biClrUsed = 0;
2065 bminfo.bmiHeader.biClrImportant = 0;
2066
2067 /* swap lines for dib sections */
2068 if (xor_objsize == sizeof(DIBSECTION))
2069 bminfo.bmiHeader.biHeight = -bminfo.bmiHeader.biHeight;
2070
2071 if (dib_width != bitmap_width) /* need to fixup alignment */
2072 {
2073 char *src_bits = HeapAlloc( GetProcessHeap(), 0, bminfo.bmiHeader.biSizeImage );
2074
2075 if (src_bits && GetDIBits( screen_dc, iconinfo->hbmColor, 0, info->nHeight,
2076 src_bits, &bminfo, DIB_RGB_COLORS ))
2077 {
2078 int y;
2079 for (y = 0; y < info->nHeight; y++)
2080 memcpy( dst_bits + y * bitmap_width, src_bits + y * dib_width, bitmap_width );
2081 }
2082 HeapFree( GetProcessHeap(), 0, src_bits );
2083 }
2084 else
2085 GetDIBits( screen_dc, iconinfo->hbmColor, 0, info->nHeight,
2086 dst_bits, &bminfo, DIB_RGB_COLORS );
2087 }
2088 }
2089 release_icon_ptr( hObj, info );
2090 USER_Driver->pCreateCursorIcon( hObj, info );
2091 }
2092 return hObj;
2093 }
2094
2095 /******************************************************************************
2096 * DrawIconEx (USER32.@) Draws an icon or cursor on device context
2097 *
2098 * NOTES
2099 * Why is this using SM_CXICON instead of SM_CXCURSOR?
2100 *
2101 * PARAMS
2102 * hdc [I] Handle to device context
2103 * x0 [I] X coordinate of upper left corner
2104 * y0 [I] Y coordinate of upper left corner
2105 * hIcon [I] Handle to icon to draw
2106 * cxWidth [I] Width of icon
2107 * cyWidth [I] Height of icon
2108 * istep [I] Index of frame in animated cursor
2109 * hbr [I] Handle to background brush
2110 * flags [I] Icon-drawing flags
2111 *
2112 * RETURNS
2113 * Success: TRUE
2114 * Failure: FALSE
2115 */
2116 BOOL WINAPI DrawIconEx( HDC hdc, INT x0, INT y0, HICON hIcon,
2117 INT cxWidth, INT cyWidth, UINT istep,
2118 HBRUSH hbr, UINT flags )
2119 {
2120 CURSORICONINFO *ptr;
2121 HDC hDC_off = 0, hMemDC;
2122 BOOL result = FALSE, DoOffscreen;
2123 HBITMAP hB_off = 0, hOld = 0;
2124 unsigned char *xorBitmapBits;
2125 unsigned int xorLength;
2126 BOOL has_alpha = FALSE;
2127
2128 TRACE_(icon)("(hdc=%p,pos=%d.%d,hicon=%p,extend=%d.%d,istep=%d,br=%p,flags=0x%08x)\n",
2129 hdc,x0,y0,hIcon,cxWidth,cyWidth,istep,hbr,flags );
2130
2131 if (!(ptr = get_icon_ptr( hIcon ))) return FALSE;
2132 if (!(hMemDC = CreateCompatibleDC( hdc )))
2133 {
2134 release_icon_ptr( hIcon, ptr );
2135 return FALSE;
2136 }
2137
2138 if (istep)
2139 FIXME_(icon)("Ignoring istep=%d\n", istep);
2140 if (flags & DI_NOMIRROR)
2141 FIXME_(icon)("Ignoring flag DI_NOMIRROR\n");
2142
2143 xorLength = ptr->nHeight * get_bitmap_width_bytes(
2144 ptr->nWidth, ptr->bBitsPerPixel);
2145 xorBitmapBits = (unsigned char *)(ptr + 1) + ptr->nHeight *
2146 get_bitmap_width_bytes(ptr->nWidth, 1);
2147
2148 if (flags & DI_IMAGE)
2149 has_alpha = bitmap_has_alpha_channel(
2150 ptr->bBitsPerPixel, xorBitmapBits, xorLength);
2151
2152 /* Calculate the size of the destination image. */
2153 if (cxWidth == 0)
2154 {
2155 if (flags & DI_DEFAULTSIZE)
2156 cxWidth = GetSystemMetrics (SM_CXICON);
2157 else
2158 cxWidth = ptr->nWidth;
2159 }
2160 if (cyWidth == 0)
2161 {
2162 if (flags & DI_DEFAULTSIZE)
2163 cyWidth = GetSystemMetrics (SM_CYICON);
2164 else
2165 cyWidth = ptr->nHeight;
2166 }
2167
2168 DoOffscreen = (GetObjectType( hbr ) == OBJ_BRUSH);
2169
2170 if (DoOffscreen) {
2171 RECT r;
2172
2173 r.left = 0;
2174 r.top = 0;
2175 r.right = cxWidth;
2176 r.bottom = cxWidth;
2177
2178 hDC_off = CreateCompatibleDC(hdc);
2179 hB_off = CreateCompatibleBitmap(hdc, cxWidth, cyWidth);
2180 if (hDC_off && hB_off) {
2181 hOld = SelectObject(hDC_off, hB_off);
2182 FillRect(hDC_off, &r, hbr);
2183 }
2184 }
2185
2186 if (hMemDC && (!DoOffscreen || (hDC_off && hB_off)))
2187 {
2188 HBITMAP hBitTemp;
2189 HBITMAP hXorBits = NULL, hAndBits = NULL;
2190 COLORREF oldFg, oldBg;
2191 INT nStretchMode;
2192
2193 nStretchMode = SetStretchBltMode (hdc, STRETCH_DELETESCANS);
2194
2195 oldFg = SetTextColor( hdc, RGB(0,0,0) );
2196 oldBg = SetBkColor( hdc, RGB(255,255,255) );
2197
2198 if ((flags & DI_MASK) && !has_alpha)
2199 {
2200 hAndBits = CreateBitmap ( ptr->nWidth, ptr->nHeight, 1, 1, ptr + 1 );
2201 if (hAndBits)
2202 {
2203 hBitTemp = SelectObject( hMemDC, hAndBits );
2204 if (DoOffscreen)
2205 StretchBlt (hDC_off, 0, 0, cxWidth, cyWidth,
2206 hMemDC, 0, 0, ptr->nWidth, ptr->nHeight, SRCAND);
2207 else
2208 StretchBlt (hdc, x0, y0, cxWidth, cyWidth,
2209 hMemDC, 0, 0, ptr->nWidth, ptr->nHeight, SRCAND);
2210 SelectObject( hMemDC, hBitTemp );
2211 }
2212 }
2213
2214 if (flags & DI_IMAGE)
2215 {
2216 if (ptr->bPlanes * ptr->bBitsPerPixel == 1)
2217 {
2218 hXorBits = CreateBitmap( ptr->nWidth, ptr->nHeight, 1, 1, xorBitmapBits );
2219 }
2220 else
2221 {
2222 unsigned char *dibBits;
2223 BITMAPINFO *bmi = HeapAlloc( GetProcessHeap(), HEAP_ZERO_MEMORY,
2224 FIELD_OFFSET( BITMAPINFO, bmiColors[256] ));
2225 bmi->bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
2226 bmi->bmiHeader.biWidth = ptr->nWidth;
2227 bmi->bmiHeader.biHeight = -ptr->nHeight;
2228 bmi->bmiHeader.biPlanes = ptr->bPlanes;
2229 bmi->bmiHeader.biBitCount = ptr->bBitsPerPixel;
2230 bmi->bmiHeader.biCompression = BI_RGB;
2231 /* FIXME: color table */
2232
2233 hXorBits = CreateDIBSection(hdc, bmi, DIB_RGB_COLORS, (void*)&dibBits, NULL, 0);
2234 if (hXorBits)
2235 {
2236 if(has_alpha)
2237 premultiply_alpha_channel(dibBits, xorBitmapBits, xorLength);
2238 else
2239 memcpy(dibBits, xorBitmapBits, xorLength);
2240 }
2241 }
2242
2243 if (hXorBits)
2244 {
2245 if(has_alpha)
2246 {
2247 BLENDFUNCTION pixelblend = { AC_SRC_OVER, 0, 255, AC_SRC_ALPHA };
2248
2249 /* Do the alpha blending render */
2250 hBitTemp = SelectObject( hMemDC, hXorBits );
2251
2252 if (DoOffscreen)
2253 GdiAlphaBlend(hDC_off, 0, 0, cxWidth, cyWidth, hMemDC,
2254 0, 0, ptr->nWidth, ptr->nHeight, pixelblend);
2255 else
2256 GdiAlphaBlend(hdc, x0, y0, cxWidth, cyWidth, hMemDC,
2257 0, 0, ptr->nWidth, ptr->nHeight, pixelblend);
2258
2259 SelectObject( hMemDC, hBitTemp );
2260 }
2261 else
2262 {
2263 DWORD rop = (flags & DI_MASK) ? SRCINVERT : SRCCOPY;
2264 hBitTemp = SelectObject( hMemDC, hXorBits );
2265 if (DoOffscreen)
2266 StretchBlt (hDC_off, 0, 0, cxWidth, cyWidth,
2267 hMemDC, 0, 0, ptr->nWidth, ptr->nHeight, rop);
2268 else
2269 StretchBlt (hdc, x0, y0, cxWidth, cyWidth,
2270 hMemDC, 0, 0, ptr->nWidth, ptr->nHeight, rop);
2271 SelectObject( hMemDC, hBitTemp );
2272 }
2273
2274 DeleteObject( hXorBits );
2275 }
2276 }
2277
2278 result = TRUE;
2279
2280 SetTextColor( hdc, oldFg );
2281 SetBkColor( hdc, oldBg );
2282
2283 if (hAndBits) DeleteObject( hAndBits );
2284 SetStretchBltMode (hdc, nStretchMode);
2285 if (DoOffscreen) {
2286 BitBlt(hdc, x0, y0, cxWidth, cyWidth, hDC_off, 0, 0, SRCCOPY);
2287 SelectObject(hDC_off, hOld);
2288 }
2289 }
2290 if (hMemDC) DeleteDC( hMemDC );
2291 if (hDC_off) DeleteDC(hDC_off);
2292 if (hB_off) DeleteObject(hB_off);
2293 release_icon_ptr( hIcon, ptr );
2294 return result;
2295 }
2296
2297 /***********************************************************************
2298 * DIB_FixColorsToLoadflags
2299 *
2300 * Change color table entries when LR_LOADTRANSPARENT or LR_LOADMAP3DCOLORS
2301 * are in loadflags
2302 */
2303 static void DIB_FixColorsToLoadflags(BITMAPINFO * bmi, UINT loadflags, BYTE pix)
2304 {
2305 int colors;
2306 COLORREF c_W, c_S, c_F, c_L, c_C;
2307 int incr,i;
2308 RGBQUAD *ptr;
2309 int bitmap_type;
2310 LONG width;
2311 LONG height;
2312 WORD bpp;
2313 DWORD compr;
2314
2315 if (((bitmap_type = DIB_GetBitmapInfo((BITMAPINFOHEADER*) bmi, &width, &height, &bpp, &compr)) == -1))
2316 {
2317 WARN_(resource)("Invalid bitmap\n");
2318 return;
2319 }
2320
2321 if (bpp > 8) return;
2322
2323 if (bitmap_type == 0) /* BITMAPCOREHEADER */
2324 {
2325 incr = 3;
2326 colors = 1 << bpp;
2327 }
2328 else
2329 {
2330 incr = 4;
2331 colors = bmi->bmiHeader.biClrUsed;
2332 if (colors > 256) colors = 256;
2333 if (!colors && (bpp <= 8)) colors = 1 << bpp;
2334 }
2335
2336 c_W = GetSysColor(COLOR_WINDOW);
2337 c_S = GetSysColor(COLOR_3DSHADOW);
2338 c_F = GetSysColor(COLOR_3DFACE);
2339 c_L = GetSysColor(COLOR_3DLIGHT);
2340
2341 if (loadflags & LR_LOADTRANSPARENT) {
2342 switch (bpp) {
2343 case 1: pix = pix >> 7; break;
2344 case 4: pix = pix >> 4; break;
2345 case 8: break;
2346 default:
2347 WARN_(resource)("(%d): Unsupported depth\n", bpp);
2348 return;
2349 }
2350 if (pix >= colors) {
2351 WARN_(resource)("pixel has color index greater than biClrUsed!\n");
2352 return;
2353 }
2354 if (loadflags & LR_LOADMAP3DCOLORS) c_W = c_F;
2355 ptr = (RGBQUAD*)((char*)bmi->bmiColors+pix*incr);
2356 ptr->rgbBlue = GetBValue(c_W);
2357 ptr->rgbGreen = GetGValue(c_W);
2358 ptr->rgbRed = GetRValue(c_W);
2359 }
2360 if (loadflags & LR_LOADMAP3DCOLORS)
2361 for (i=0; i<colors; i++) {
2362 ptr = (RGBQUAD*)((char*)bmi->bmiColors+i*incr);
2363 c_C = RGB(ptr->rgbRed, ptr->rgbGreen, ptr->rgbBlue);
2364 if (c_C == RGB(128, 128, 128)) {
2365 ptr->rgbRed = GetRValue(c_S);
2366 ptr->rgbGreen = GetGValue(c_S);
2367 ptr->rgbBlue = GetBValue(c_S);
2368 } else if (c_C == RGB(192, 192, 192)) {
2369 ptr->rgbRed = GetRValue(c_F);
2370 ptr->rgbGreen = GetGValue(c_F);
2371 ptr->rgbBlue = GetBValue(c_F);
2372 } else if (c_C == RGB(223, 223, 223)) {
2373 ptr->rgbRed = GetRValue(c_L);
2374 ptr->rgbGreen = GetGValue(c_L);
2375 ptr->rgbBlue = GetBValue(c_L);
2376 }
2377 }
2378 }
2379
2380
2381 /**********************************************************************
2382 * BITMAP_Load
2383 */
2384 static HBITMAP BITMAP_Load( HINSTANCE instance, LPCWSTR name,
2385 INT desiredx, INT desiredy, UINT loadflags )
2386 {
2387 HBITMAP hbitmap = 0, orig_bm;
2388 HRSRC hRsrc;
2389 HGLOBAL handle;
2390 char *ptr = NULL;
2391 BITMAPINFO *info, *fix_info = NULL, *scaled_info = NULL;
2392 int size;
2393 BYTE pix;
2394 char *bits;
2395 LONG width, height, new_width, new_height;
2396 WORD bpp_dummy;
2397 DWORD compr_dummy;
2398 INT bm_type;
2399 HDC screen_mem_dc = NULL;
2400
2401 if (!(loadflags & LR_LOADFROMFILE))
2402 {
2403 if (!instance)
2404 {
2405 /* OEM bitmap: try to load the resource from user32.dll */
2406 instance = user32_module;
2407 }
2408
2409 if (!(hRsrc = FindResourceW( instance, name, (LPWSTR)RT_BITMAP ))) return 0;
2410 if (!(handle = LoadResource( instance, hRsrc ))) return 0;
2411
2412 if ((info = LockResource( handle )) == NULL) return 0;
2413 }
2414 else
2415 {
2416 BITMAPFILEHEADER * bmfh;
2417
2418 if (!(ptr = map_fileW( name, NULL ))) return 0;
2419 info = (BITMAPINFO *)(ptr + sizeof(BITMAPFILEHEADER));
2420 bmfh = (BITMAPFILEHEADER *)ptr;
2421 if (bmfh->bfType != 0x4d42 /* 'BM' */)
2422 {
2423 WARN("Invalid/unsupported bitmap format!\n");
2424 UnmapViewOfFile( ptr );
2425 return 0;
2426 }
2427 }
2428
2429 size = bitmap_info_size(info, DIB_RGB_COLORS);
2430 fix_info = HeapAlloc(GetProcessHeap(), 0, size);
2431 scaled_info = HeapAlloc(GetProcessHeap(), 0, size);
2432
2433 if (!fix_info || !scaled_info) goto end;
2434 memcpy(fix_info, info, size);
2435
2436 pix = *((LPBYTE)info + size);
2437 DIB_FixColorsToLoadflags(fix_info, loadflags, pix);
2438
2439 memcpy(scaled_info, fix_info, size);
2440 bm_type = DIB_GetBitmapInfo( &fix_info->bmiHeader, &width, &height,
2441 &bpp_dummy, &compr_dummy);
2442 if(desiredx != 0)
2443 new_width = desiredx;
2444 else
2445 new_width = width;
2446
2447 if(desiredy != 0)
2448 new_height = height > 0 ? desiredy : -desiredy;
2449 else
2450 new_height = height;
2451
2452 if(bm_type == 0)
2453 {
2454 BITMAPCOREHEADER *core = (BITMAPCOREHEADER *)&scaled_info->bmiHeader;
2455 core->bcWidth = new_width;
2456 core->bcHeight = new_height;
2457 }
2458 else
2459 {
2460 scaled_info->bmiHeader.biWidth = new_width;
2461 scaled_info->bmiHeader.biHeight = new_height;
2462 }
2463
2464 if (new_height < 0) new_height = -new_height;
2465
2466 if (!screen_dc) screen_dc = CreateDCW( DISPLAYW, NULL, NULL, NULL );
2467 if (!(screen_mem_dc = CreateCompatibleDC( screen_dc ))) goto end;
2468
2469 bits = (char *)info + size;
2470
2471 if (loadflags & LR_CREATEDIBSECTION)
2472 {
2473 scaled_info->bmiHeader.biCompression = 0; /* DIBSection can't be compressed */
2474 hbitmap = CreateDIBSection(screen_dc, scaled_info, DIB_RGB_COLORS, NULL, 0, 0);
2475 }
2476 else
2477 {
2478 if (is_dib_monochrome(fix_info))
2479 hbitmap = CreateBitmap(new_width, new_height, 1, 1, NULL);
2480 else
2481 hbitmap = CreateCompatibleBitmap(screen_dc, new_width, new_height);
2482 }
2483
2484 orig_bm = SelectObject(screen_mem_dc, hbitmap);
2485 StretchDIBits(screen_mem_dc, 0, 0, new_width, new_height, 0, 0, width, height, bits, fix_info, DIB_RGB_COLORS, SRCCOPY);
2486 SelectObject(screen_mem_dc, orig_bm);
2487
2488 end:
2489 if (screen_mem_dc) DeleteDC(screen_mem_dc);
2490 HeapFree(GetProcessHeap(), 0, scaled_info);
2491 HeapFree(GetProcessHeap(), 0, fix_info);
2492 if (loadflags & LR_LOADFROMFILE) UnmapViewOfFile( ptr );
2493
2494 return hbitmap;
2495 }
2496
2497 /**********************************************************************
2498 * LoadImageA (USER32.@)
2499 *
2500 * See LoadImageW.
2501 */
2502 HANDLE WINAPI LoadImageA( HINSTANCE hinst, LPCSTR name, UINT type,
2503 INT desiredx, INT desiredy, UINT loadflags)
2504 {
2505 HANDLE res;
2506 LPWSTR u_name;
2507
2508 if (IS_INTRESOURCE(name))
2509 return LoadImageW(hinst, (LPCWSTR)name, type, desiredx, desiredy, loadflags);
2510
2511 __TRY {
2512 DWORD len = MultiByteToWideChar( CP_ACP, 0, name, -1, NULL, 0 );
2513 u_name = HeapAlloc( GetProcessHeap(), 0, len * sizeof(WCHAR) );
2514 MultiByteToWideChar( CP_ACP, 0, name, -1, u_name, len );
2515 }
2516 __EXCEPT_PAGE_FAULT {
2517 SetLastError( ERROR_INVALID_PARAMETER );
2518 return 0;
2519 }
2520 __ENDTRY
2521 res = LoadImageW(hinst, u_name, type, desiredx, desiredy, loadflags);
2522 HeapFree(GetProcessHeap(), 0, u_name);
2523 return res;
2524 }
2525
2526
2527 /******************************************************************************
2528 * LoadImageW (USER32.@) Loads an icon, cursor, or bitmap
2529 *
2530 * PARAMS
2531 * hinst [I] Handle of instance that contains image
2532 * name [I] Name of image
2533 * type [I] Type of image
2534 * desiredx [I] Desired width
2535 * desiredy [I] Desired height
2536 * loadflags [I] Load flags
2537 *
2538 * RETURNS
2539 * Success: Handle to newly loaded image
2540 * Failure: NULL
2541 *
2542 * FIXME: Implementation lacks some features, see LR_ defines in winuser.h
2543 */
2544 HANDLE WINAPI LoadImageW( HINSTANCE hinst, LPCWSTR name, UINT type,
2545 INT desiredx, INT desiredy, UINT loadflags )
2546 {
2547 TRACE_(resource)("(%p,%s,%d,%d,%d,0x%08x)\n",
2548 hinst,debugstr_w(name),type,desiredx,desiredy,loadflags);
2549
2550 if (loadflags & LR_DEFAULTSIZE) {
2551 if (type == IMAGE_ICON) {
2552 if (!desiredx) desiredx = GetSystemMetrics(SM_CXICON);
2553 if (!desiredy) desiredy = GetSystemMetrics(SM_CYICON);
2554 } else if (type == IMAGE_CURSOR) {
2555 if (!desiredx) desiredx = GetSystemMetrics(SM_CXCURSOR);
2556 if (!desiredy) desiredy = GetSystemMetrics(SM_CYCURSOR);
2557 }
2558 }
2559 if (loadflags & LR_LOADFROMFILE) loadflags &= ~LR_SHARED;
2560 switch (type) {
2561 case IMAGE_BITMAP:
2562 return BITMAP_Load( hinst, name, desiredx, desiredy, loadflags );
2563
2564 case IMAGE_ICON:
2565 if (!screen_dc) screen_dc = CreateDCW( DISPLAYW, NULL, NULL, NULL );
2566 if (screen_dc)
2567 {
2568 return CURSORICON_Load(hinst, name, desiredx, desiredy,
2569 GetDeviceCaps(screen_dc, BITSPIXEL),
2570 FALSE, loadflags);
2571 }
2572 break;
2573
2574 case IMAGE_CURSOR:
2575 return CURSORICON_Load(hinst, name, desiredx, desiredy,
2576 1, TRUE, loadflags);
2577 }
2578 return 0;
2579 }
2580
2581 /******************************************************************************
2582 * CopyImage (USER32.@) Creates new image and copies attributes to it
2583 *
2584 * PARAMS
2585 * hnd [I] Handle to image to copy
2586 * type [I] Type of image to copy
2587 * desiredx [I] Desired width of new image
2588 * desiredy [I] Desired height of new image
2589 * flags [I] Copy flags
2590 *
2591 * RETURNS
2592 * Success: Handle to newly created image
2593 * Failure: NULL
2594 *
2595 * BUGS
2596 * Only Windows NT 4.0 supports the LR_COPYRETURNORG flag for bitmaps,
2597 * all other versions (95/2000/XP have been tested) ignore it.
2598 *
2599 * NOTES
2600 * If LR_CREATEDIBSECTION is absent, the copy will be monochrome for
2601 * a monochrome source bitmap or if LR_MONOCHROME is present, otherwise
2602 * the copy will have the same depth as the screen.
2603 * The content of the image will only be copied if the bit depth of the
2604 * original image is compatible with the bit depth of the screen, or
2605 * if the source is a DIB section.
2606 * The LR_MONOCHROME flag is ignored if LR_CREATEDIBSECTION is present.
2607 */
2608 HANDLE WINAPI CopyImage( HANDLE hnd, UINT type, INT desiredx,
2609 INT desiredy, UINT flags )
2610 {
2611 TRACE("hnd=%p, type=%u, desiredx=%d, desiredy=%d, flags=%x\n",
2612 hnd, type, desiredx, desiredy, flags);
2613
2614 switch (type)
2615 {
2616 case IMAGE_BITMAP:
2617 {
2618 HBITMAP res = NULL;
2619 DIBSECTION ds;
2620 int objSize;
2621 BITMAPINFO * bi;
2622
2623 objSize = GetObjectW( hnd, sizeof(ds), &ds );
2624 if (!objSize) return 0;
2625 if ((desiredx < 0) || (desiredy < 0)) return 0;
2626
2627 if (flags & LR_COPYFROMRESOURCE)
2628 {
2629 FIXME("The flag LR_COPYFROMRESOURCE is not implemented for bitmaps\n");
2630 }
2631
2632 if (desiredx == 0) desiredx = ds.dsBm.bmWidth;
2633 if (desiredy == 0) desiredy = ds.dsBm.bmHeight;
2634
2635 /* Allocate memory for a BITMAPINFOHEADER structure and a
2636 color table. The maximum number of colors in a color table
2637 is 256 which corresponds to a bitmap with depth 8.
2638 Bitmaps with higher depths don't have color tables. */
2639 bi = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(BITMAPINFOHEADER) + 256 * sizeof(RGBQUAD));
2640 if (!bi) return 0;
2641
2642 bi->bmiHeader.biSize = sizeof(bi->bmiHeader);
2643 bi->bmiHeader.biPlanes = ds.dsBm.bmPlanes;
2644 bi->bmiHeader.biBitCount = ds.dsBm.bmBitsPixel;
2645 bi->bmiHeader.biCompression = BI_RGB;
2646
2647 if (flags & LR_CREATEDIBSECTION)
2648 {
2649 /* Create a DIB section. LR_MONOCHROME is ignored */
2650 void * bits;
2651 HDC dc = CreateCompatibleDC(NULL);
2652
2653 if (objSize == sizeof(DIBSECTION))
2654 {
2655 /* The source bitmap is a DIB.
2656 Get its attributes to create an exact copy */
2657 memcpy(bi, &ds.dsBmih, sizeof(BITMAPINFOHEADER));
2658 }
2659
2660 /* Get the color table or the color masks */
2661 GetDIBits(dc, hnd, 0, ds.dsBm.bmHeight, NULL, bi, DIB_RGB_COLORS);
2662
2663 bi->bmiHeader.biWidth = desiredx;
2664 bi->bmiHeader.biHeight = desiredy;
2665 bi->bmiHeader.biSizeImage = 0;
2666
2667 res = CreateDIBSection(dc, bi, DIB_RGB_COLORS, &bits, NULL, 0);
2668 DeleteDC(dc);
2669 }
2670 else
2671 {
2672 /* Create a device-dependent bitmap */
2673
2674 BOOL monochrome = (flags & LR_MONOCHROME);
2675
2676 if (objSize == sizeof(DIBSECTION))
2677 {
2678 /* The source bitmap is a DIB section.
2679 Get its attributes */
2680 HDC dc = CreateCompatibleDC(NULL);
2681 bi->bmiHeader.biSize = sizeof(bi->bmiHeader);
2682 bi->bmiHeader.biBitCount = ds.dsBm.bmBitsPixel;
2683 GetDIBits(dc, hnd, 0, ds.dsBm.bmHeight, NULL, bi, DIB_RGB_COLORS);
2684 DeleteDC(dc);
2685
2686 if (!monochrome && ds.dsBm.bmBitsPixel == 1)
2687 {
2688 /* Look if the colors of the DIB are black and white */
2689
2690 monochrome =
2691 (bi->bmiColors[0].rgbRed == 0xff
2692 && bi->bmiColors[0].rgbGreen == 0xff
2693 && bi->bmiColors[0].rgbBlue == 0xff
2694 && bi->bmiColors[0].rgbReserved == 0
2695 && bi->bmiColors[1].rgbRed == 0
2696 && bi->bmiColors[1].rgbGreen == 0
2697 && bi->bmiColors[1].rgbBlue == 0
2698 && bi->bmiColors[1].rgbReserved == 0)
2699 ||
2700 (bi->bmiColors[0].rgbRed == 0
2701 && bi->bmiColors[0].rgbGreen == 0
2702 && bi->bmiColors[0].rgbBlue == 0
2703 && bi->bmiColors[0].rgbReserved == 0
2704 && bi->bmiColors[1].rgbRed == 0xff
2705 && bi->bmiColors[1].rgbGreen == 0xff
2706 && bi->bmiColors[1].rgbBlue == 0xff
2707 && bi->bmiColors[1].rgbReserved == 0);
2708 }
2709 }
2710 else if (!monochrome)
2711 {
2712 monochrome = ds.dsBm.bmBitsPixel == 1;
2713 }
2714
2715 if (monochrome)
2716 {
2717 res = CreateBitmap(desiredx, desiredy, 1, 1, NULL);
2718 }
2719 else
2720 {
2721 HDC screenDC = GetDC(NULL);
2722 res = CreateCompatibleBitmap(screenDC, desiredx, desiredy);
2723 ReleaseDC(NULL, screenDC);
2724 }
2725 }
2726
2727 if (res)
2728 {
2729 /* Only copy the bitmap if it's a DIB section or if it's
2730 compatible to the screen */
2731 BOOL copyContents;
2732
2733 if (objSize == sizeof(DIBSECTION))
2734 {
2735 copyContents = TRUE;
2736 }
2737 else
2738 {
2739 HDC screenDC = GetDC(NULL);
2740 int screen_depth = GetDeviceCaps(screenDC, BITSPIXEL);
2741 ReleaseDC(NULL, screenDC);
2742
2743 copyContents = (ds.dsBm.bmBitsPixel == 1 || ds.dsBm.bmBitsPixel == screen_depth);
2744 }
2745
2746 if (copyContents)
2747 {
2748 /* The source bitmap may already be selected in a device context,
2749 use GetDIBits/StretchDIBits and not StretchBlt */
2750
2751 HDC dc;
2752 void * bits;
2753
2754 dc = CreateCompatibleDC(NULL);
2755
2756 bi->bmiHeader.biWidth = ds.dsBm.bmWidth;
2757 bi->bmiHeader.biHeight = ds.dsBm.bmHeight;
2758 bi->bmiHeader.biSizeImage = 0;
2759 bi->bmiHeader.biClrUsed = 0;
2760 bi->bmiHeader.biClrImportant = 0;
2761
2762 /* Fill in biSizeImage */
2763 GetDIBits(dc, hnd, 0, ds.dsBm.bmHeight, NULL, bi, DIB_RGB_COLORS);
2764 bits = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, bi->bmiHeader.biSizeImage);
2765
2766 if (bits)
2767 {
2768 HBITMAP oldBmp;
2769
2770 /* Get the image bits of the source bitmap */
2771 GetDIBits(dc, hnd, 0, ds.dsBm.bmHeight, bits, bi, DIB_RGB_COLORS);
2772
2773 /* Copy it to the destination bitmap */
2774 oldBmp = SelectObject(dc, res);
2775 StretchDIBits(dc, 0, 0, desiredx, desiredy,
2776 0, 0, ds.dsBm.bmWidth, ds.dsBm.bmHeight,
2777 bits, bi, DIB_RGB_COLORS, SRCCOPY);
2778 SelectObject(dc, oldBmp);
2779
2780 HeapFree(GetProcessHeap(), 0, bits);
2781 }
2782
2783 DeleteDC(dc);
2784 }
2785
2786 if (flags & LR_COPYDELETEORG)
2787 {
2788 DeleteObject(hnd);
2789 }
2790 }
2791 HeapFree(GetProcessHeap(), 0, bi);
2792 return res;
2793 }
2794 case IMAGE_ICON:
2795 return CURSORICON_ExtCopy(hnd,type, desiredx, desiredy, flags);
2796 case IMAGE_CURSOR:
2797 /* Should call CURSORICON_ExtCopy but more testing
2798 * needs to be done before we change this
2799 */
2800 if (flags) FIXME("Flags are ignored\n");
2801 return CopyCursor(hnd);
2802 }
2803 return 0;
2804 }
2805
2806
2807 /******************************************************************************
2808 * LoadBitmapW (USER32.@) Loads bitmap from the executable file
2809 *
2810 * RETURNS
2811 * Success: Handle to specified bitmap
2812 * Failure: NULL
2813 */
2814 HBITMAP WINAPI LoadBitmapW(
2815 HINSTANCE instance, /* [in] Handle to application instance */
2816 LPCWSTR name) /* [in] Address of bitmap resource name */
2817 {
2818 return LoadImageW( instance, name, IMAGE_BITMAP, 0, 0, 0 );
2819 }
2820
2821 /**********************************************************************
2822 * LoadBitmapA (USER32.@)
2823 *
2824 * See LoadBitmapW.
2825 */
2826 HBITMAP WINAPI LoadBitmapA( HINSTANCE instance, LPCSTR name )
2827 {
2828 return LoadImageA( instance, name, IMAGE_BITMAP, 0, 0, 0 );
2829 }
Maarten's multimedia branch