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user32: Match cursor size in priority over color depth.
[wine.git] / dlls / user32 / cursoricon.c
blobf408c22909b838edc80dad8ddebc62500d121765
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 #include "config.h"
26 #include "wine/port.h"
27
28 #include <assert.h>
29 #include <stdarg.h>
30 #include <string.h>
31 #include <stdlib.h>
32
33 #include "windef.h"
34 #include "winbase.h"
35 #include "wingdi.h"
36 #include "winerror.h"
37 #include "winnls.h"
38 #include "wine/exception.h"
39 #include "wine/server.h"
40 #include "controls.h"
41 #include "win.h"
42 #include "user_private.h"
43 #include "wine/list.h"
44 #include "wine/unicode.h"
45 #include "wine/debug.h"
46
47 WINE_DEFAULT_DEBUG_CHANNEL(cursor);
48 WINE_DECLARE_DEBUG_CHANNEL(icon);
49 WINE_DECLARE_DEBUG_CHANNEL(resource);
50
51 static struct list icon_cache = LIST_INIT( icon_cache );
52
53 /**********************************************************************
54 * User objects management
55 */
56
57 struct cursoricon_frame
58 {
59 UINT width; /* frame-specific width */
60 UINT height; /* frame-specific height */
61 UINT delay; /* frame-specific delay between this frame and the next (in jiffies) */
62 HBITMAP color; /* color bitmap */
63 HBITMAP alpha; /* pre-multiplied alpha bitmap for 32-bpp icons */
64 HBITMAP mask; /* mask bitmap (followed by color for 1-bpp icons) */
65 };
66
67 struct cursoricon_object
68 {
69 struct user_object obj; /* object header */
70 struct list entry; /* entry in shared icons list */
71 ULONG_PTR param; /* opaque param used by 16-bit code */
72 HMODULE module; /* module for icons loaded from resources */
73 LPWSTR resname; /* resource name for icons loaded from resources */
74 HRSRC rsrc; /* resource for shared icons */
75 BOOL is_icon; /* whether icon or cursor */
76 BOOL is_ani; /* whether this object is a static cursor or an animated cursor */
77 UINT delay; /* delay between this frame and the next (in jiffies) */
78 POINT hotspot;
79 };
80
81 struct static_cursoricon_object
82 {
83 struct cursoricon_object shared;
84 struct cursoricon_frame frame; /* frame-specific icon data */
85 };
86
87 struct animated_cursoricon_object
88 {
89 struct cursoricon_object shared;
90 UINT num_frames; /* number of frames in the icon/cursor */
91 UINT num_steps; /* number of sequence steps in the icon/cursor */
92 HICON frames[1]; /* list of animated cursor frames */
93 };
94
95 static HDC get_screen_dc(void)
96 {
97 static const WCHAR DISPLAYW[] = {'D','I','S','P','L','A','Y',0};
98 static HDC screen_dc;
99
100 if (!screen_dc)
101 screen_dc = CreateDCW( DISPLAYW, NULL, NULL, NULL );
102
103 return screen_dc;
104 }
105
106 static HICON alloc_icon_handle( BOOL is_ani, UINT num_steps )
107 {
108 struct cursoricon_object *obj;
109 int icon_size;
110 HICON handle;
111
112 if (is_ani)
113 icon_size = FIELD_OFFSET( struct animated_cursoricon_object, frames[num_steps] );
114 else
115 icon_size = sizeof( struct static_cursoricon_object );
116 obj = HeapAlloc( GetProcessHeap(), HEAP_ZERO_MEMORY, icon_size );
117 if (!obj) return NULL;
118
119 obj->delay = 0;
120 obj->is_ani = is_ani;
121 if (is_ani)
122 {
123 struct animated_cursoricon_object *ani_icon_data = (struct animated_cursoricon_object *) obj;
124
125 ani_icon_data->num_steps = num_steps;
126 ani_icon_data->num_frames = num_steps; /* changed later for some animated cursors */
127 }
128
129 if (!(handle = alloc_user_handle( &obj->obj, USER_ICON )))
130 HeapFree( GetProcessHeap(), 0, obj );
131 return handle;
132 }
133
134 static struct cursoricon_object *get_icon_ptr( HICON handle )
135 {
136 struct cursoricon_object *obj = get_user_handle_ptr( handle, USER_ICON );
137 if (obj == OBJ_OTHER_PROCESS)
138 {
139 WARN( "icon handle %p from other process\n", handle );
140 obj = NULL;
141 }
142 return obj;
143 }
144
145 static struct cursoricon_frame *get_icon_frame( struct cursoricon_object *obj, int istep )
146 {
147 struct static_cursoricon_object *req_frame;
148
149 if (obj->is_ani)
150 {
151 struct animated_cursoricon_object *ani_icon_data;
152 struct cursoricon_object *frameobj;
153
154 ani_icon_data = (struct animated_cursoricon_object *) obj;
155 if (!(frameobj = get_icon_ptr( ani_icon_data->frames[istep] )))
156 return 0;
157 req_frame = (struct static_cursoricon_object *) frameobj;
158 }
159 else
160 req_frame = (struct static_cursoricon_object *) obj;
161
162 return &req_frame->frame;
163 }
164
165 static void release_icon_frame( struct cursoricon_object *obj, struct cursoricon_frame *frame )
166 {
167 if (obj->is_ani)
168 {
169 struct cursoricon_object *frameobj;
170
171 frameobj = (struct cursoricon_object *) (((char *)frame) - FIELD_OFFSET(struct static_cursoricon_object, frame));
172 release_user_handle_ptr( frameobj );
173 }
174 }
175
176 static UINT get_icon_steps( struct cursoricon_object *obj )
177 {
178 if (obj->is_ani)
179 {
180 struct animated_cursoricon_object *ani_icon_data;
181
182 ani_icon_data = (struct animated_cursoricon_object *) obj;
183 return ani_icon_data->num_steps;
184 }
185 return 1;
186 }
187
188 static BOOL free_icon_handle( HICON handle )
189 {
190 struct cursoricon_object *obj = free_user_handle( handle, USER_ICON );
191
192 if (obj == OBJ_OTHER_PROCESS) WARN( "icon handle %p from other process\n", handle );
193 else if (obj)
194 {
195 ULONG_PTR param = obj->param;
196 UINT i;
197
198 assert( !obj->rsrc ); /* shared icons can't be freed */
199
200 if (!obj->is_ani)
201 {
202 struct cursoricon_frame *frame = get_icon_frame( obj, 0 );
203
204 if (frame->alpha) DeleteObject( frame->alpha );
205 if (frame->color) DeleteObject( frame->color );
206 DeleteObject( frame->mask );
207 release_icon_frame( obj, frame );
208 }
209 else
210 {
211 struct animated_cursoricon_object *ani_icon_data = (struct animated_cursoricon_object *) obj;
212
213 for (i=0; i<ani_icon_data->num_steps; i++)
214 {
215 HICON hFrame = ani_icon_data->frames[i];
216
217 if (hFrame)
218 {
219 UINT j;
220
221 free_icon_handle( ani_icon_data->frames[i] );
222 for (j=0; j<ani_icon_data->num_steps; j++)
223 {
224 if (ani_icon_data->frames[j] == hFrame)
225 ani_icon_data->frames[j] = 0;
226 }
227 }
228 }
229 }
230 if (!IS_INTRESOURCE( obj->resname )) HeapFree( GetProcessHeap(), 0, obj->resname );
231 HeapFree( GetProcessHeap(), 0, obj );
232 if (wow_handlers.free_icon_param && param) wow_handlers.free_icon_param( param );
233 USER_Driver->pDestroyCursorIcon( handle );
234 return TRUE;
235 }
236 return FALSE;
237 }
238
239 ULONG_PTR get_icon_param( HICON handle )
240 {
241 ULONG_PTR ret = 0;
242 struct cursoricon_object *obj = get_user_handle_ptr( handle, USER_ICON );
243
244 if (obj == OBJ_OTHER_PROCESS) WARN( "icon handle %p from other process\n", handle );
245 else if (obj)
246 {
247 ret = obj->param;
248 release_user_handle_ptr( obj );
249 }
250 return ret;
251 }
252
253 ULONG_PTR set_icon_param( HICON handle, ULONG_PTR param )
254 {
255 ULONG_PTR ret = 0;
256 struct cursoricon_object *obj = get_user_handle_ptr( handle, USER_ICON );
257
258 if (obj == OBJ_OTHER_PROCESS) WARN( "icon handle %p from other process\n", handle );
259 else if (obj)
260 {
261 ret = obj->param;
262 obj->param = param;
263 release_user_handle_ptr( obj );
264 }
265 return ret;
266 }
267
268
269 /***********************************************************************
270 * map_fileW
271 *
272 * Helper function to map a file to memory:
273 * name - file name
274 * [RETURN] ptr - pointer to mapped file
275 * [RETURN] filesize - pointer size of file to be stored if not NULL
276 */
277 static const void *map_fileW( LPCWSTR name, LPDWORD filesize )
278 {
279 HANDLE hFile, hMapping;
280 LPVOID ptr = NULL;
281
282 hFile = CreateFileW( name, GENERIC_READ, FILE_SHARE_READ, NULL,
283 OPEN_EXISTING, FILE_FLAG_RANDOM_ACCESS, 0 );
284 if (hFile != INVALID_HANDLE_VALUE)
285 {
286 hMapping = CreateFileMappingW( hFile, NULL, PAGE_READONLY, 0, 0, NULL );
287 if (hMapping)
288 {
289 ptr = MapViewOfFile( hMapping, FILE_MAP_READ, 0, 0, 0 );
290 CloseHandle( hMapping );
291 if (filesize)
292 *filesize = GetFileSize( hFile, NULL );
293 }
294 CloseHandle( hFile );
295 }
296 return ptr;
297 }
298
299
300 /***********************************************************************
301 * get_dib_image_size
302 *
303 * Return the size of a DIB bitmap in bytes.
304 */
305 static int get_dib_image_size( int width, int height, int depth )
306 {
307 return (((width * depth + 31) / 8) & ~3) * abs( height );
308 }
309
310
311 /***********************************************************************
312 * bitmap_info_size
313 *
314 * Return the size of the bitmap info structure including color table.
315 */
316 int bitmap_info_size( const BITMAPINFO * info, WORD coloruse )
317 {
318 unsigned int colors, size, masks = 0;
319
320 if (info->bmiHeader.biSize == sizeof(BITMAPCOREHEADER))
321 {
322 const BITMAPCOREHEADER *core = (const BITMAPCOREHEADER *)info;
323 colors = (core->bcBitCount <= 8) ? 1 << core->bcBitCount : 0;
324 return sizeof(BITMAPCOREHEADER) + colors *
325 ((coloruse == DIB_RGB_COLORS) ? sizeof(RGBTRIPLE) : sizeof(WORD));
326 }
327 else /* assume BITMAPINFOHEADER */
328 {
329 colors = info->bmiHeader.biClrUsed;
330 if (colors > 256) /* buffer overflow otherwise */
331 colors = 256;
332 if (!colors && (info->bmiHeader.biBitCount <= 8))
333 colors = 1 << info->bmiHeader.biBitCount;
334 if (info->bmiHeader.biCompression == BI_BITFIELDS) masks = 3;
335 size = max( info->bmiHeader.biSize, sizeof(BITMAPINFOHEADER) + masks * sizeof(DWORD) );
336 return size + colors * ((coloruse == DIB_RGB_COLORS) ? sizeof(RGBQUAD) : sizeof(WORD));
337 }
338 }
339
340
341 /***********************************************************************
342 * copy_bitmap
343 *
344 * Helper function to duplicate a bitmap.
345 */
346 static HBITMAP copy_bitmap( HBITMAP bitmap )
347 {
348 HDC src, dst = 0;
349 HBITMAP new_bitmap = 0;
350 BITMAP bmp;
351
352 if (!bitmap) return 0;
353 if (!GetObjectW( bitmap, sizeof(bmp), &bmp )) return 0;
354
355 if ((src = CreateCompatibleDC( 0 )) && (dst = CreateCompatibleDC( 0 )))
356 {
357 SelectObject( src, bitmap );
358 if ((new_bitmap = CreateCompatibleBitmap( src, bmp.bmWidth, bmp.bmHeight )))
359 {
360 SelectObject( dst, new_bitmap );
361 BitBlt( dst, 0, 0, bmp.bmWidth, bmp.bmHeight, src, 0, 0, SRCCOPY );
362 }
363 }
364 DeleteDC( dst );
365 DeleteDC( src );
366 return new_bitmap;
367 }
368
369
370 /***********************************************************************
371 * is_dib_monochrome
372 *
373 * Returns whether a DIB can be converted to a monochrome DDB.
374 *
375 * A DIB can be converted if its color table contains only black and
376 * white. Black must be the first color in the color table.
377 *
378 * Note : If the first color in the color table is white followed by
379 * black, we can't convert it to a monochrome DDB with
380 * SetDIBits, because black and white would be inverted.
381 */
382 static BOOL is_dib_monochrome( const BITMAPINFO* info )
383 {
384 if (info->bmiHeader.biSize == sizeof(BITMAPCOREHEADER))
385 {
386 const RGBTRIPLE *rgb = ((const BITMAPCOREINFO*)info)->bmciColors;
387
388 if (((const BITMAPCOREINFO*)info)->bmciHeader.bcBitCount != 1) return FALSE;
389
390 /* Check if the first color is black */
391 if ((rgb->rgbtRed == 0) && (rgb->rgbtGreen == 0) && (rgb->rgbtBlue == 0))
392 {
393 rgb++;
394
395 /* Check if the second color is white */
396 return ((rgb->rgbtRed == 0xff) && (rgb->rgbtGreen == 0xff)
397 && (rgb->rgbtBlue == 0xff));
398 }
399 else return FALSE;
400 }
401 else /* assume BITMAPINFOHEADER */
402 {
403 const RGBQUAD *rgb = info->bmiColors;
404
405 if (info->bmiHeader.biBitCount != 1) return FALSE;
406
407 /* Check if the first color is black */
408 if ((rgb->rgbRed == 0) && (rgb->rgbGreen == 0) &&
409 (rgb->rgbBlue == 0) && (rgb->rgbReserved == 0))
410 {
411 rgb++;
412
413 /* Check if the second color is white */
414 return ((rgb->rgbRed == 0xff) && (rgb->rgbGreen == 0xff)
415 && (rgb->rgbBlue == 0xff) && (rgb->rgbReserved == 0));
416 }
417 else return FALSE;
418 }
419 }
420
421 /***********************************************************************
422 * DIB_GetBitmapInfo
423 *
424 * Get the info from a bitmap header.
425 * Return 1 for INFOHEADER, 0 for COREHEADER, -1 in case of failure.
426 */
427 static int DIB_GetBitmapInfo( const BITMAPINFOHEADER *header, LONG *width,
428 LONG *height, WORD *bpp, DWORD *compr )
429 {
430 if (header->biSize == sizeof(BITMAPCOREHEADER))
431 {
432 const BITMAPCOREHEADER *core = (const BITMAPCOREHEADER *)header;
433 *width = core->bcWidth;
434 *height = core->bcHeight;
435 *bpp = core->bcBitCount;
436 *compr = 0;
437 return 0;
438 }
439 else if (header->biSize == sizeof(BITMAPINFOHEADER) ||
440 header->biSize == sizeof(BITMAPV4HEADER) ||
441 header->biSize == sizeof(BITMAPV5HEADER))
442 {
443 *width = header->biWidth;
444 *height = header->biHeight;
445 *bpp = header->biBitCount;
446 *compr = header->biCompression;
447 return 1;
448 }
449 WARN("unknown/wrong size (%u) for header\n", header->biSize);
450 return -1;
451 }
452
453 /**********************************************************************
454 * get_icon_size
455 */
456 BOOL get_icon_size( HICON handle, SIZE *size )
457 {
458 struct cursoricon_object *info;
459 struct cursoricon_frame *frame;
460
461 if (!(info = get_icon_ptr( handle ))) return FALSE;
462 frame = get_icon_frame( info, 0 );
463 size->cx = frame->width;
464 size->cy = frame->height;
465 release_icon_frame( info, frame);
466 release_user_handle_ptr( info );
467 return TRUE;
468 }
469
470 /*
471 * The following macro functions account for the irregularities of
472 * accessing cursor and icon resources in files and resource entries.
473 */
474 typedef BOOL (*fnGetCIEntry)( LPCVOID dir, DWORD size, int n,
475 int *width, int *height, int *bits );
476
477 /**********************************************************************
478 * CURSORICON_FindBestIcon
479 *
480 * Find the icon closest to the requested size and bit depth.
481 */
482 static int CURSORICON_FindBestIcon( LPCVOID dir, DWORD size, fnGetCIEntry get_entry,
483 int width, int height, int depth, UINT loadflags )
484 {
485 int i, cx, cy, bits, bestEntry = -1;
486 UINT iTotalDiff, iXDiff=0, iYDiff=0, iColorDiff;
487 UINT iTempXDiff, iTempYDiff, iTempColorDiff;
488
489 /* Find Best Fit */
490 iTotalDiff = 0xFFFFFFFF;
491 iColorDiff = 0xFFFFFFFF;
492
493 if (loadflags & LR_DEFAULTSIZE)
494 {
495 if (!width) width = GetSystemMetrics( SM_CXICON );
496 if (!height) height = GetSystemMetrics( SM_CYICON );
497 }
498 else if (!width && !height)
499 {
500 /* use the size of the first entry */
501 if (!get_entry( dir, size, 0, &width, &height, &bits )) return -1;
502 iTotalDiff = 0;
503 }
504
505 for ( i = 0; iTotalDiff && get_entry( dir, size, i, &cx, &cy, &bits ); i++ )
506 {
507 iTempXDiff = abs(width - cx);
508 iTempYDiff = abs(height - cy);
509
510 if(iTotalDiff > (iTempXDiff + iTempYDiff))
511 {
512 iXDiff = iTempXDiff;
513 iYDiff = iTempYDiff;
514 iTotalDiff = iXDiff + iYDiff;
515 }
516 }
517
518 /* Find Best Colors for Best Fit */
519 for ( i = 0; get_entry( dir, size, i, &cx, &cy, &bits ); i++ )
520 {
521 if(abs(width - cx) == iXDiff && abs(height - cy) == iYDiff)
522 {
523 iTempColorDiff = abs(depth - bits);
524 if(iColorDiff > iTempColorDiff)
525 {
526 bestEntry = i;
527 iColorDiff = iTempColorDiff;
528 }
529 }
530 }
531
532 return bestEntry;
533 }
534
535 static BOOL CURSORICON_GetResIconEntry( LPCVOID dir, DWORD size, int n,
536 int *width, int *height, int *bits )
537 {
538 const CURSORICONDIR *resdir = dir;
539 const ICONRESDIR *icon;
540
541 if ( resdir->idCount <= n )
542 return FALSE;
543 if ((const char *)&resdir->idEntries[n + 1] - (const char *)dir > size)
544 return FALSE;
545 icon = &resdir->idEntries[n].ResInfo.icon;
546 *width = icon->bWidth;
547 *height = icon->bHeight;
548 *bits = resdir->idEntries[n].wBitCount;
549 return TRUE;
550 }
551
552 /**********************************************************************
553 * CURSORICON_FindBestCursor
554 *
555 * Find the cursor closest to the requested size.
556 *
557 * FIXME: parameter 'color' ignored.
558 */
559 static int CURSORICON_FindBestCursor( LPCVOID dir, DWORD size, fnGetCIEntry get_entry,
560 int width, int height, int depth, UINT loadflags )
561 {
562 int i, maxwidth, maxheight, maxbits, cx, cy, bits, bestEntry = -1;
563
564 if (loadflags & LR_DEFAULTSIZE)
565 {
566 if (!width) width = GetSystemMetrics( SM_CXCURSOR );
567 if (!height) height = GetSystemMetrics( SM_CYCURSOR );
568 }
569 else if (!width && !height)
570 {
571 /* use the first entry */
572 if (!get_entry( dir, size, 0, &width, &height, &bits )) return -1;
573 return 0;
574 }
575
576 /* First find the largest one smaller than or equal to the requested size*/
577
578 maxwidth = maxheight = maxbits = 0;
579 for ( i = 0; get_entry( dir, size, i, &cx, &cy, &bits ); i++ )
580 {
581 if (cx > width || cy > height) continue;
582 if (cx < maxwidth || cy < maxheight) continue;
583 if (cx == maxwidth && cy == maxheight)
584 {
585 if (loadflags & LR_MONOCHROME)
586 {
587 if (maxbits && bits >= maxbits) continue;
588 }
589 else if (bits <= maxbits) continue;
590 }
591 bestEntry = i;
592 maxwidth = cx;
593 maxheight = cy;
594 maxbits = bits;
595 }
596 if (bestEntry != -1) return bestEntry;
597
598 /* Now find the smallest one larger than the requested size */
599
600 maxwidth = maxheight = 255;
601 for ( i = 0; get_entry( dir, size, i, &cx, &cy, &bits ); i++ )
602 {
603 if (cx > maxwidth || cy > maxheight) continue;
604 if (cx == maxwidth && cy == maxheight)
605 {
606 if (loadflags & LR_MONOCHROME)
607 {
608 if (maxbits && bits >= maxbits) continue;
609 }
610 else if (bits <= maxbits) continue;
611 }
612 bestEntry = i;
613 maxwidth = cx;
614 maxheight = cy;
615 maxbits = bits;
616 }
617 if (bestEntry == -1) bestEntry = 0;
618
619 return bestEntry;
620 }
621
622 static BOOL CURSORICON_GetResCursorEntry( LPCVOID dir, DWORD size, int n,
623 int *width, int *height, int *bits )
624 {
625 const CURSORICONDIR *resdir = dir;
626 const CURSORDIR *cursor;
627
628 if ( resdir->idCount <= n )
629 return FALSE;
630 if ((const char *)&resdir->idEntries[n + 1] - (const char *)dir > size)
631 return FALSE;
632 cursor = &resdir->idEntries[n].ResInfo.cursor;
633 *width = cursor->wWidth;
634 *height = cursor->wHeight;
635 *bits = resdir->idEntries[n].wBitCount;
636 return TRUE;
637 }
638
639 static const CURSORICONDIRENTRY *CURSORICON_FindBestIconRes( const CURSORICONDIR * dir, DWORD size,
640 int width, int height, int depth,
641 UINT loadflags )
642 {
643 int n;
644
645 n = CURSORICON_FindBestIcon( dir, size, CURSORICON_GetResIconEntry,
646 width, height, depth, loadflags );
647 if ( n < 0 )
648 return NULL;
649 return &dir->idEntries[n];
650 }
651
652 static const CURSORICONDIRENTRY *CURSORICON_FindBestCursorRes( const CURSORICONDIR *dir, DWORD size,
653 int width, int height, int depth,
654 UINT loadflags )
655 {
656 int n = CURSORICON_FindBestCursor( dir, size, CURSORICON_GetResCursorEntry,
657 width, height, depth, loadflags );
658 if ( n < 0 )
659 return NULL;
660 return &dir->idEntries[n];
661 }
662
663 static BOOL CURSORICON_GetFileEntry( LPCVOID dir, DWORD size, int n,
664 int *width, int *height, int *bits )
665 {
666 const CURSORICONFILEDIR *filedir = dir;
667 const CURSORICONFILEDIRENTRY *entry;
668 const BITMAPINFOHEADER *info;
669
670 if ( filedir->idCount <= n )
671 return FALSE;
672 if ((const char *)&filedir->idEntries[n + 1] - (const char *)dir > size)
673 return FALSE;
674 entry = &filedir->idEntries[n];
675 info = (const BITMAPINFOHEADER *)((const char *)dir + entry->dwDIBOffset);
676 if (info->biSize != sizeof(BITMAPCOREHEADER))
677 {
678 if ((const char *)(info + 1) - (const char *)dir > size) return FALSE;
679 *bits = info->biBitCount;
680 }
681 else
682 {
683 const BITMAPCOREHEADER *coreinfo = (const BITMAPCOREHEADER *)((const char *)dir + entry->dwDIBOffset);
684 if ((const char *)(coreinfo + 1) - (const char *)dir > size) return FALSE;
685 *bits = coreinfo->bcBitCount;
686 }
687 *width = entry->bWidth;
688 *height = entry->bHeight;
689 return TRUE;
690 }
691
692 static const CURSORICONFILEDIRENTRY *CURSORICON_FindBestCursorFile( const CURSORICONFILEDIR *dir, DWORD size,
693 int width, int height, int depth,
694 UINT loadflags )
695 {
696 int n = CURSORICON_FindBestCursor( dir, size, CURSORICON_GetFileEntry,
697 width, height, depth, loadflags );
698 if ( n < 0 )
699 return NULL;
700 return &dir->idEntries[n];
701 }
702
703 static const CURSORICONFILEDIRENTRY *CURSORICON_FindBestIconFile( const CURSORICONFILEDIR *dir, DWORD size,
704 int width, int height, int depth,
705 UINT loadflags )
706 {
707 int n = CURSORICON_FindBestIcon( dir, size, CURSORICON_GetFileEntry,
708 width, height, depth, loadflags );
709 if ( n < 0 )
710 return NULL;
711 return &dir->idEntries[n];
712 }
713
714 /***********************************************************************
715 * bmi_has_alpha
716 */
717 static BOOL bmi_has_alpha( const BITMAPINFO *info, const void *bits )
718 {
719 int i;
720 BOOL has_alpha = FALSE;
721 const unsigned char *ptr = bits;
722
723 if (info->bmiHeader.biBitCount != 32) return FALSE;
724 for (i = 0; i < info->bmiHeader.biWidth * abs(info->bmiHeader.biHeight); i++, ptr += 4)
725 if ((has_alpha = (ptr[3] != 0))) break;
726 return has_alpha;
727 }
728
729 /***********************************************************************
730 * create_alpha_bitmap
731 *
732 * Create the alpha bitmap for a 32-bpp icon that has an alpha channel.
733 */
734 static HBITMAP create_alpha_bitmap( HBITMAP color, const BITMAPINFO *src_info, const void *color_bits )
735 {
736 HBITMAP alpha = 0;
737 BITMAPINFO *info = NULL;
738 BITMAP bm;
739 HDC hdc;
740 void *bits;
741 unsigned char *ptr;
742 int i;
743
744 if (!GetObjectW( color, sizeof(bm), &bm )) return 0;
745 if (bm.bmBitsPixel != 32) return 0;
746
747 if (!(hdc = CreateCompatibleDC( 0 ))) return 0;
748 if (!(info = HeapAlloc( GetProcessHeap(), 0, FIELD_OFFSET( BITMAPINFO, bmiColors[256] )))) goto done;
749 info->bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
750 info->bmiHeader.biWidth = bm.bmWidth;
751 info->bmiHeader.biHeight = -bm.bmHeight;
752 info->bmiHeader.biPlanes = 1;
753 info->bmiHeader.biBitCount = 32;
754 info->bmiHeader.biCompression = BI_RGB;
755 info->bmiHeader.biSizeImage = bm.bmWidth * bm.bmHeight * 4;
756 info->bmiHeader.biXPelsPerMeter = 0;
757 info->bmiHeader.biYPelsPerMeter = 0;
758 info->bmiHeader.biClrUsed = 0;
759 info->bmiHeader.biClrImportant = 0;
760 if (!(alpha = CreateDIBSection( hdc, info, DIB_RGB_COLORS, &bits, NULL, 0 ))) goto done;
761
762 if (src_info)
763 {
764 SelectObject( hdc, alpha );
765 StretchDIBits( hdc, 0, 0, bm.bmWidth, bm.bmHeight,
766 0, 0, src_info->bmiHeader.biWidth, src_info->bmiHeader.biHeight,
767 color_bits, src_info, DIB_RGB_COLORS, SRCCOPY );
768
769 }
770 else
771 {
772 GetDIBits( hdc, color, 0, bm.bmHeight, bits, info, DIB_RGB_COLORS );
773 if (!bmi_has_alpha( info, bits ))
774 {
775 DeleteObject( alpha );
776 alpha = 0;
777 goto done;
778 }
779 }
780
781 /* pre-multiply by alpha */
782 for (i = 0, ptr = bits; i < bm.bmWidth * bm.bmHeight; i++, ptr += 4)
783 {
784 unsigned int alpha = ptr[3];
785 ptr[0] = ptr[0] * alpha / 255;
786 ptr[1] = ptr[1] * alpha / 255;
787 ptr[2] = ptr[2] * alpha / 255;
788 }
789
790 done:
791 DeleteDC( hdc );
792 HeapFree( GetProcessHeap(), 0, info );
793 return alpha;
794 }
795
796
797 /***********************************************************************
798 * create_icon_from_bmi
799 *
800 * Create an icon from its BITMAPINFO.
801 */
802 static HICON create_icon_from_bmi( const BITMAPINFO *bmi, DWORD maxsize, HMODULE module, LPCWSTR resname,
803 HRSRC rsrc, POINT hotspot, BOOL bIcon, INT width, INT height,
804 UINT cFlag )
805 {
806 DWORD size, color_size, mask_size;
807 HBITMAP color = 0, mask = 0, alpha = 0;
808 const void *color_bits, *mask_bits;
809 BITMAPINFO *bmi_copy;
810 BOOL ret = FALSE;
811 BOOL do_stretch;
812 HICON hObj = 0;
813 HDC screen_dc;
814 HDC hdc = 0;
815 LONG bmi_width, bmi_height;
816 WORD bpp;
817 DWORD compr;
818
819 /* Check bitmap header */
820
821 if (maxsize < sizeof(BITMAPCOREHEADER))
822 {
823 WARN( "invalid size %u\n", maxsize );
824 return 0;
825 }
826 if (maxsize < bmi->bmiHeader.biSize)
827 {
828 WARN( "invalid header size %u\n", bmi->bmiHeader.biSize );
829 return 0;
830 }
831 if ( (bmi->bmiHeader.biSize != sizeof(BITMAPCOREHEADER)) &&
832 (bmi->bmiHeader.biSize != sizeof(BITMAPINFOHEADER) ||
833 (bmi->bmiHeader.biCompression != BI_RGB &&
834 bmi->bmiHeader.biCompression != BI_BITFIELDS)) )
835 {
836 WARN( "invalid bitmap header %u\n", bmi->bmiHeader.biSize );
837 return 0;
838 }
839
840 size = bitmap_info_size( bmi, DIB_RGB_COLORS );
841 DIB_GetBitmapInfo(&bmi->bmiHeader, &bmi_width, &bmi_height, &bpp, &compr);
842 color_size = get_dib_image_size( bmi_width, bmi_height / 2,
843 bpp );
844 mask_size = get_dib_image_size( bmi_width, bmi_height / 2, 1 );
845 if (size > maxsize || color_size > maxsize - size)
846 {
847 WARN( "truncated file %u < %u+%u+%u\n", maxsize, size, color_size, mask_size );
848 return 0;
849 }
850 if (mask_size > maxsize - size - color_size) mask_size = 0; /* no mask */
851
852 if (cFlag & LR_DEFAULTSIZE)
853 {
854 if (!width) width = GetSystemMetrics( bIcon ? SM_CXICON : SM_CXCURSOR );
855 if (!height) height = GetSystemMetrics( bIcon ? SM_CYICON : SM_CYCURSOR );
856 }
857 else
858 {
859 if (!width) width = bmi_width;
860 if (!height) height = bmi_height/2;
861 }
862 do_stretch = (bmi_height/2 != height) ||
863 (bmi_width != width);
864
865 /* Scale the hotspot */
866 if (bIcon)
867 {
868 hotspot.x = width / 2;
869 hotspot.y = height / 2;
870 }
871 else if (do_stretch)
872 {
873 hotspot.x = (hotspot.x * width) / bmi_width;
874 hotspot.y = (hotspot.y * height) / (bmi_height / 2);
875 }
876
877 if (!(screen_dc = get_screen_dc())) return 0;
878
879 if (!(bmi_copy = HeapAlloc( GetProcessHeap(), 0, max( size, FIELD_OFFSET( BITMAPINFO, bmiColors[2] )))))
880 return 0;
881 if (!(hdc = CreateCompatibleDC( 0 ))) goto done;
882
883 memcpy( bmi_copy, bmi, size );
884 if (bmi_copy->bmiHeader.biSize != sizeof(BITMAPCOREHEADER))
885 bmi_copy->bmiHeader.biHeight /= 2;
886 else
887 ((BITMAPCOREINFO *)bmi_copy)->bmciHeader.bcHeight /= 2;
888 bmi_height /= 2;
889
890 color_bits = (const char*)bmi + size;
891 mask_bits = (const char*)color_bits + color_size;
892
893 alpha = 0;
894 if (is_dib_monochrome( bmi ))
895 {
896 if (!(mask = CreateBitmap( width, height * 2, 1, 1, NULL ))) goto done;
897 color = 0;
898
899 /* copy color data into second half of mask bitmap */
900 SelectObject( hdc, mask );
901 StretchDIBits( hdc, 0, height, width, height,
902 0, 0, bmi_width, bmi_height,
903 color_bits, bmi_copy, DIB_RGB_COLORS, SRCCOPY );
904 }
905 else
906 {
907 if (!(mask = CreateBitmap( width, height, 1, 1, NULL ))) goto done;
908 if (!(color = CreateBitmap( width, height, GetDeviceCaps( screen_dc, PLANES ),
909 GetDeviceCaps( screen_dc, BITSPIXEL ), NULL )))
910 {
911 DeleteObject( mask );
912 goto done;
913 }
914 SelectObject( hdc, color );
915 StretchDIBits( hdc, 0, 0, width, height,
916 0, 0, bmi_width, bmi_height,
917 color_bits, bmi_copy, DIB_RGB_COLORS, SRCCOPY );
918
919 if (bmi_has_alpha( bmi_copy, color_bits ))
920 alpha = create_alpha_bitmap( color, bmi_copy, color_bits );
921
922 /* convert info to monochrome to copy the mask */
923 if (bmi_copy->bmiHeader.biSize != sizeof(BITMAPCOREHEADER))
924 {
925 RGBQUAD *rgb = bmi_copy->bmiColors;
926
927 bmi_copy->bmiHeader.biBitCount = 1;
928 bmi_copy->bmiHeader.biClrUsed = bmi_copy->bmiHeader.biClrImportant = 2;
929 rgb[0].rgbBlue = rgb[0].rgbGreen = rgb[0].rgbRed = 0x00;
930 rgb[1].rgbBlue = rgb[1].rgbGreen = rgb[1].rgbRed = 0xff;
931 rgb[0].rgbReserved = rgb[1].rgbReserved = 0;
932 }
933 else
934 {
935 RGBTRIPLE *rgb = (RGBTRIPLE *)(((BITMAPCOREHEADER *)bmi_copy) + 1);
936
937 ((BITMAPCOREINFO *)bmi_copy)->bmciHeader.bcBitCount = 1;
938 rgb[0].rgbtBlue = rgb[0].rgbtGreen = rgb[0].rgbtRed = 0x00;
939 rgb[1].rgbtBlue = rgb[1].rgbtGreen = rgb[1].rgbtRed = 0xff;
940 }
941 }
942
943 if (mask_size)
944 {
945 SelectObject( hdc, mask );
946 StretchDIBits( hdc, 0, 0, width, height,
947 0, 0, bmi_width, bmi_height,
948 mask_bits, bmi_copy, DIB_RGB_COLORS, SRCCOPY );
949 }
950 ret = TRUE;
951
952 done:
953 DeleteDC( hdc );
954 HeapFree( GetProcessHeap(), 0, bmi_copy );
955
956 if (ret)
957 hObj = alloc_icon_handle( FALSE, 0 );
958 if (hObj)
959 {
960 struct cursoricon_object *info = get_icon_ptr( hObj );
961 struct cursoricon_frame *frame;
962
963 info->is_icon = bIcon;
964 info->module = module;
965 info->hotspot = hotspot;
966 frame = get_icon_frame( info, 0 );
967 frame->delay = ~0;
968 frame->width = width;
969 frame->height = height;
970 frame->color = color;
971 frame->mask = mask;
972 frame->alpha = alpha;
973 release_icon_frame( info, frame );
974 if (!IS_INTRESOURCE(resname))
975 {
976 info->resname = HeapAlloc( GetProcessHeap(), 0, (strlenW(resname) + 1) * sizeof(WCHAR) );
977 if (info->resname) strcpyW( info->resname, resname );
978 }
979 else info->resname = MAKEINTRESOURCEW( LOWORD(resname) );
980
981 if (module && (cFlag & LR_SHARED))
982 {
983 info->rsrc = rsrc;
984 list_add_head( &icon_cache, &info->entry );
985 }
986 release_user_handle_ptr( info );
987 }
988 else
989 {
990 DeleteObject( color );
991 DeleteObject( alpha );
992 DeleteObject( mask );
993 }
994 return hObj;
995 }
996
997
998 /**********************************************************************
999 * .ANI cursor support
1000 */
1001 #define RIFF_FOURCC( c0, c1, c2, c3 ) \
1002 ( (DWORD)(BYTE)(c0) | ( (DWORD)(BYTE)(c1) << 8 ) | \
1003 ( (DWORD)(BYTE)(c2) << 16 ) | ( (DWORD)(BYTE)(c3) << 24 ) )
1004
1005 #define ANI_RIFF_ID RIFF_FOURCC('R', 'I', 'F', 'F')
1006 #define ANI_LIST_ID RIFF_FOURCC('L', 'I', 'S', 'T')
1007 #define ANI_ACON_ID RIFF_FOURCC('A', 'C', 'O', 'N')
1008 #define ANI_anih_ID RIFF_FOURCC('a', 'n', 'i', 'h')
1009 #define ANI_seq__ID RIFF_FOURCC('s', 'e', 'q', ' ')
1010 #define ANI_fram_ID RIFF_FOURCC('f', 'r', 'a', 'm')
1011 #define ANI_rate_ID RIFF_FOURCC('r', 'a', 't', 'e')
1012
1013 #define ANI_FLAG_ICON 0x1
1014 #define ANI_FLAG_SEQUENCE 0x2
1015
1016 typedef struct {
1017 DWORD header_size;
1018 DWORD num_frames;
1019 DWORD num_steps;
1020 DWORD width;
1021 DWORD height;
1022 DWORD bpp;
1023 DWORD num_planes;
1024 DWORD display_rate;
1025 DWORD flags;
1026 } ani_header;
1027
1028 typedef struct {
1029 DWORD data_size;
1030 const unsigned char *data;
1031 } riff_chunk_t;
1032
1033 static void dump_ani_header( const ani_header *header )
1034 {
1035 TRACE(" header size: %d\n", header->header_size);
1036 TRACE(" frames: %d\n", header->num_frames);
1037 TRACE(" steps: %d\n", header->num_steps);
1038 TRACE(" width: %d\n", header->width);
1039 TRACE(" height: %d\n", header->height);
1040 TRACE(" bpp: %d\n", header->bpp);
1041 TRACE(" planes: %d\n", header->num_planes);
1042 TRACE(" display rate: %d\n", header->display_rate);
1043 TRACE(" flags: 0x%08x\n", header->flags);
1044 }
1045
1046
1047 /*
1048 * RIFF:
1049 * DWORD "RIFF"
1050 * DWORD size
1051 * DWORD riff_id
1052 * BYTE[] data
1053 *
1054 * LIST:
1055 * DWORD "LIST"
1056 * DWORD size
1057 * DWORD list_id
1058 * BYTE[] data
1059 *
1060 * CHUNK:
1061 * DWORD chunk_id
1062 * DWORD size
1063 * BYTE[] data
1064 */
1065 static void riff_find_chunk( DWORD chunk_id, DWORD chunk_type, const riff_chunk_t *parent_chunk, riff_chunk_t *chunk )
1066 {
1067 const unsigned char *ptr = parent_chunk->data;
1068 const unsigned char *end = parent_chunk->data + (parent_chunk->data_size - (2 * sizeof(DWORD)));
1069
1070 if (chunk_type == ANI_LIST_ID || chunk_type == ANI_RIFF_ID) end -= sizeof(DWORD);
1071
1072 while (ptr < end)
1073 {
1074 if ((!chunk_type && *(const DWORD *)ptr == chunk_id )
1075 || (chunk_type && *(const DWORD *)ptr == chunk_type && *((const DWORD *)ptr + 2) == chunk_id ))
1076 {
1077 ptr += sizeof(DWORD);
1078 chunk->data_size = (*(const DWORD *)ptr + 1) & ~1;
1079 ptr += sizeof(DWORD);
1080 if (chunk_type == ANI_LIST_ID || chunk_type == ANI_RIFF_ID) ptr += sizeof(DWORD);
1081 chunk->data = ptr;
1082
1083 return;
1084 }
1085
1086 ptr += sizeof(DWORD);
1087 ptr += (*(const DWORD *)ptr + 1) & ~1;
1088 ptr += sizeof(DWORD);
1089 }
1090 }
1091
1092
1093 /*
1094 * .ANI layout:
1095 *
1096 * RIFF:'ACON' RIFF chunk
1097 * |- CHUNK:'anih' Header
1098 * |- CHUNK:'seq ' Sequence information (optional)
1099 * \- LIST:'fram' Frame list
1100 * |- CHUNK:icon Cursor frames
1101 * |- CHUNK:icon
1102 * |- ...
1103 * \- CHUNK:icon
1104 */
1105 static HCURSOR CURSORICON_CreateIconFromANI( const BYTE *bits, DWORD bits_size, INT width, INT height,
1106 INT depth, BOOL is_icon, UINT loadflags )
1107 {
1108 struct animated_cursoricon_object *ani_icon_data;
1109 struct cursoricon_object *info;
1110 DWORD *frame_rates = NULL;
1111 DWORD *frame_seq = NULL;
1112 ani_header header;
1113 BOOL use_seq = FALSE;
1114 HCURSOR cursor;
1115 UINT i;
1116 BOOL error = FALSE;
1117 HICON *frames;
1118
1119 riff_chunk_t root_chunk = { bits_size, bits };
1120 riff_chunk_t ACON_chunk = {0};
1121 riff_chunk_t anih_chunk = {0};
1122 riff_chunk_t fram_chunk = {0};
1123 riff_chunk_t rate_chunk = {0};
1124 riff_chunk_t seq_chunk = {0};
1125 const unsigned char *icon_chunk;
1126 const unsigned char *icon_data;
1127
1128 TRACE("bits %p, bits_size %d\n", bits, bits_size);
1129
1130 riff_find_chunk( ANI_ACON_ID, ANI_RIFF_ID, &root_chunk, &ACON_chunk );
1131 if (!ACON_chunk.data)
1132 {
1133 ERR("Failed to get root chunk.\n");
1134 return 0;
1135 }
1136
1137 riff_find_chunk( ANI_anih_ID, 0, &ACON_chunk, &anih_chunk );
1138 if (!anih_chunk.data)
1139 {
1140 ERR("Failed to get 'anih' chunk.\n");
1141 return 0;
1142 }
1143 memcpy( &header, anih_chunk.data, sizeof(header) );
1144 dump_ani_header( &header );
1145
1146 if (!(header.flags & ANI_FLAG_ICON))
1147 {
1148 FIXME("Raw animated icon/cursor data is not currently supported.\n");
1149 return 0;
1150 }
1151
1152 if (header.flags & ANI_FLAG_SEQUENCE)
1153 {
1154 riff_find_chunk( ANI_seq__ID, 0, &ACON_chunk, &seq_chunk );
1155 if (seq_chunk.data)
1156 {
1157 frame_seq = (DWORD *) seq_chunk.data;
1158 use_seq = TRUE;
1159 }
1160 else
1161 {
1162 FIXME("Sequence data expected but not found, assuming steps == frames.\n");
1163 header.num_steps = header.num_frames;
1164 }
1165 }
1166
1167 riff_find_chunk( ANI_rate_ID, 0, &ACON_chunk, &rate_chunk );
1168 if (rate_chunk.data)
1169 frame_rates = (DWORD *) rate_chunk.data;
1170
1171 riff_find_chunk( ANI_fram_ID, ANI_LIST_ID, &ACON_chunk, &fram_chunk );
1172 if (!fram_chunk.data)
1173 {
1174 ERR("Failed to get icon list.\n");
1175 return 0;
1176 }
1177
1178 cursor = alloc_icon_handle( TRUE, header.num_steps );
1179 if (!cursor) return 0;
1180 frames = HeapAlloc( GetProcessHeap(), 0, sizeof(*frames) * header.num_frames );
1181 if (!frames)
1182 {
1183 free_icon_handle( cursor );
1184 return 0;
1185 }
1186
1187 info = get_icon_ptr( cursor );
1188 ani_icon_data = (struct animated_cursoricon_object *) info;
1189 info->is_icon = is_icon;
1190 ani_icon_data->num_frames = header.num_frames;
1191
1192 /* The .ANI stores the display rate in jiffies (1/60s) */
1193 info->delay = header.display_rate;
1194
1195 icon_chunk = fram_chunk.data;
1196 icon_data = fram_chunk.data + (2 * sizeof(DWORD));
1197 for (i=0; i<header.num_frames; i++)
1198 {
1199 const DWORD chunk_size = *(const DWORD *)(icon_chunk + sizeof(DWORD));
1200 const CURSORICONFILEDIRENTRY *entry;
1201 INT frameWidth, frameHeight;
1202 const BITMAPINFO *bmi;
1203
1204 entry = CURSORICON_FindBestIconFile((const CURSORICONFILEDIR *) icon_data,
1205 bits + bits_size - icon_data,
1206 width, height, depth, loadflags );
1207
1208 info->hotspot.x = entry->xHotspot;
1209 info->hotspot.y = entry->yHotspot;
1210 if (!header.width || !header.height)
1211 {
1212 frameWidth = entry->bWidth;
1213 frameHeight = entry->bHeight;
1214 }
1215 else
1216 {
1217 frameWidth = header.width;
1218 frameHeight = header.height;
1219 }
1220
1221 frames[i] = NULL;
1222 if (entry->dwDIBOffset < bits + bits_size - icon_data)
1223 {
1224 bmi = (const BITMAPINFO *) (icon_data + entry->dwDIBOffset);
1225 /* Grab a frame from the animation */
1226 frames[i] = create_icon_from_bmi( bmi, bits + bits_size - (const BYTE *)bmi,
1227 NULL, NULL, NULL, info->hotspot,
1228 is_icon, frameWidth, frameHeight, loadflags );
1229 }
1230
1231 if (!frames[i])
1232 {
1233 FIXME_(cursor)("failed to convert animated cursor frame.\n");
1234 error = TRUE;
1235 if (i == 0)
1236 {
1237 FIXME_(cursor)("Completely failed to create animated cursor!\n");
1238 ani_icon_data->num_frames = 0;
1239 release_user_handle_ptr( info );
1240 free_icon_handle( cursor );
1241 HeapFree( GetProcessHeap(), 0, frames );
1242 return 0;
1243 }
1244 break;
1245 }
1246
1247 /* Advance to the next chunk */
1248 icon_chunk += chunk_size + (2 * sizeof(DWORD));
1249 icon_data = icon_chunk + (2 * sizeof(DWORD));
1250 }
1251
1252 /* There was an error but we at least decoded the first frame, so just use that frame */
1253 if (error)
1254 {
1255 FIXME_(cursor)("Error creating animated cursor, only using first frame!\n");
1256 for (i=1; i<ani_icon_data->num_frames; i++)
1257 free_icon_handle( ani_icon_data->frames[i] );
1258 use_seq = FALSE;
1259 info->delay = 0;
1260 ani_icon_data->num_steps = 1;
1261 ani_icon_data->num_frames = 1;
1262 }
1263
1264 /* Setup the animated frames in the correct sequence */
1265 for (i=0; i<ani_icon_data->num_steps; i++)
1266 {
1267 DWORD frame_id = use_seq ? frame_seq[i] : i;
1268 struct cursoricon_frame *frame;
1269
1270 if (frame_id >= ani_icon_data->num_frames)
1271 {
1272 frame_id = ani_icon_data->num_frames-1;
1273 ERR_(cursor)("Sequence indicates frame past end of list, corrupt?\n");
1274 }
1275 ani_icon_data->frames[i] = frames[frame_id];
1276 frame = get_icon_frame( info, i );
1277 if (frame_rates)
1278 frame->delay = frame_rates[i];
1279 else
1280 frame->delay = ~0;
1281 release_icon_frame( info, frame );
1282 }
1283
1284 HeapFree( GetProcessHeap(), 0, frames );
1285 release_user_handle_ptr( info );
1286
1287 return cursor;
1288 }
1289
1290
1291 /**********************************************************************
1292 * CreateIconFromResourceEx (USER32.@)
1293 *
1294 * FIXME: Convert to mono when cFlag is LR_MONOCHROME.
1295 */
1296 HICON WINAPI CreateIconFromResourceEx( LPBYTE bits, UINT cbSize,
1297 BOOL bIcon, DWORD dwVersion,
1298 INT width, INT height,
1299 UINT cFlag )
1300 {
1301 POINT hotspot;
1302 const BITMAPINFO *bmi;
1303
1304 TRACE_(cursor)("%p (%u bytes), ver %08x, %ix%i %s %s\n",
1305 bits, cbSize, dwVersion, width, height,
1306 bIcon ? "icon" : "cursor", (cFlag & LR_MONOCHROME) ? "mono" : "" );
1307
1308 if (!bits) return 0;
1309
1310 if (dwVersion == 0x00020000)
1311 {
1312 FIXME_(cursor)("\t2.xx resources are not supported\n");
1313 return 0;
1314 }
1315
1316 /* Check if the resource is an animated icon/cursor */
1317 if (!memcmp(bits, "RIFF", 4))
1318 return CURSORICON_CreateIconFromANI( bits, cbSize, width, height,
1319 0 /* default depth */, bIcon, cFlag );
1320
1321 if (bIcon)
1322 {
1323 hotspot.x = width / 2;
1324 hotspot.y = height / 2;
1325 bmi = (BITMAPINFO *)bits;
1326 }
1327 else /* get the hotspot */
1328 {
1329 const SHORT *pt = (const SHORT *)bits;
1330 hotspot.x = pt[0];
1331 hotspot.y = pt[1];
1332 bmi = (const BITMAPINFO *)(pt + 2);
1333 cbSize -= 2 * sizeof(*pt);
1334 }
1335
1336 return create_icon_from_bmi( bmi, cbSize, NULL, NULL, NULL, hotspot, bIcon, width, height, cFlag );
1337 }
1338
1339
1340 /**********************************************************************
1341 * CreateIconFromResource (USER32.@)
1342 */
1343 HICON WINAPI CreateIconFromResource( LPBYTE bits, UINT cbSize,
1344 BOOL bIcon, DWORD dwVersion)
1345 {
1346 return CreateIconFromResourceEx( bits, cbSize, bIcon, dwVersion, 0,0,0);
1347 }
1348
1349
1350 static HICON CURSORICON_LoadFromFile( LPCWSTR filename,
1351 INT width, INT height, INT depth,
1352 BOOL fCursor, UINT loadflags)
1353 {
1354 const CURSORICONFILEDIRENTRY *entry;
1355 const CURSORICONFILEDIR *dir;
1356 DWORD filesize = 0;
1357 HICON hIcon = 0;
1358 const BYTE *bits;
1359 POINT hotspot;
1360
1361 TRACE("loading %s\n", debugstr_w( filename ));
1362
1363 bits = map_fileW( filename, &filesize );
1364 if (!bits)
1365 return hIcon;
1366
1367 /* Check for .ani. */
1368 if (memcmp( bits, "RIFF", 4 ) == 0)
1369 {
1370 hIcon = CURSORICON_CreateIconFromANI( bits, filesize, width, height, depth, !fCursor, loadflags );
1371 goto end;
1372 }
1373
1374 dir = (const CURSORICONFILEDIR*) bits;
1375 if ( filesize < FIELD_OFFSET( CURSORICONFILEDIR, idEntries[dir->idCount] ))
1376 goto end;
1377
1378 if ( fCursor )
1379 entry = CURSORICON_FindBestCursorFile( dir, filesize, width, height, depth, loadflags );
1380 else
1381 entry = CURSORICON_FindBestIconFile( dir, filesize, width, height, depth, loadflags );
1382
1383 if ( !entry )
1384 goto end;
1385
1386 /* check that we don't run off the end of the file */
1387 if ( entry->dwDIBOffset > filesize )
1388 goto end;
1389 if ( entry->dwDIBOffset + entry->dwDIBSize > filesize )
1390 goto end;
1391
1392 hotspot.x = entry->xHotspot;
1393 hotspot.y = entry->yHotspot;
1394 hIcon = create_icon_from_bmi( (const BITMAPINFO *)&bits[entry->dwDIBOffset], filesize - entry->dwDIBOffset,
1395 NULL, NULL, NULL, hotspot, !fCursor, width, height, loadflags );
1396 end:
1397 TRACE("loaded %s -> %p\n", debugstr_w( filename ), hIcon );
1398 UnmapViewOfFile( bits );
1399 return hIcon;
1400 }
1401
1402 /**********************************************************************
1403 * CURSORICON_Load
1404 *
1405 * Load a cursor or icon from resource or file.
1406 */
1407 static HICON CURSORICON_Load(HINSTANCE hInstance, LPCWSTR name,
1408 INT width, INT height, INT depth,
1409 BOOL fCursor, UINT loadflags)
1410 {
1411 HANDLE handle = 0;
1412 HICON hIcon = 0;
1413 HRSRC hRsrc;
1414 DWORD size;
1415 const CURSORICONDIR *dir;
1416 const CURSORICONDIRENTRY *dirEntry;
1417 const BYTE *bits;
1418 WORD wResId;
1419 POINT hotspot;
1420
1421 TRACE("%p, %s, %dx%d, depth %d, fCursor %d, flags 0x%04x\n",
1422 hInstance, debugstr_w(name), width, height, depth, fCursor, loadflags);
1423
1424 if ( loadflags & LR_LOADFROMFILE ) /* Load from file */
1425 return CURSORICON_LoadFromFile( name, width, height, depth, fCursor, loadflags );
1426
1427 if (!hInstance) hInstance = user32_module; /* Load OEM cursor/icon */
1428
1429 /* don't cache 16-bit instances (FIXME: should never get 16-bit instances in the first place) */
1430 if ((ULONG_PTR)hInstance >> 16 == 0) loadflags &= ~LR_SHARED;
1431
1432 /* Get directory resource ID */
1433
1434 if (!(hRsrc = FindResourceW( hInstance, name,
1435 (LPWSTR)(fCursor ? RT_GROUP_CURSOR : RT_GROUP_ICON) )))
1436 {
1437 /* try animated resource */
1438 if (!(hRsrc = FindResourceW( hInstance, name,
1439 (LPWSTR)(fCursor ? RT_ANICURSOR : RT_ANIICON) ))) return 0;
1440 if (!(handle = LoadResource( hInstance, hRsrc ))) return 0;
1441 bits = LockResource( handle );
1442 return CURSORICON_CreateIconFromANI( bits, SizeofResource( hInstance, handle ),
1443 width, height, depth, !fCursor, loadflags );
1444 }
1445
1446 /* Find the best entry in the directory */
1447
1448 if (!(handle = LoadResource( hInstance, hRsrc ))) return 0;
1449 if (!(dir = LockResource( handle ))) return 0;
1450 size = SizeofResource( hInstance, hRsrc );
1451 if (fCursor)
1452 dirEntry = CURSORICON_FindBestCursorRes( dir, size, width, height, depth, loadflags );
1453 else
1454 dirEntry = CURSORICON_FindBestIconRes( dir, size, width, height, depth, loadflags );
1455 if (!dirEntry) return 0;
1456 wResId = dirEntry->wResId;
1457 FreeResource( handle );
1458
1459 /* Load the resource */
1460
1461 if (!(hRsrc = FindResourceW(hInstance,MAKEINTRESOURCEW(wResId),
1462 (LPWSTR)(fCursor ? RT_CURSOR : RT_ICON) ))) return 0;
1463
1464 /* If shared icon, check whether it was already loaded */
1465 if (loadflags & LR_SHARED)
1466 {
1467 struct cursoricon_object *ptr;
1468
1469 USER_Lock();
1470 LIST_FOR_EACH_ENTRY( ptr, &icon_cache, struct cursoricon_object, entry )
1471 {
1472 if (ptr->module != hInstance) continue;
1473 if (ptr->rsrc != hRsrc) continue;
1474 hIcon = ptr->obj.handle;
1475 break;
1476 }
1477 USER_Unlock();
1478 if (hIcon) return hIcon;
1479 }
1480
1481 if (!(handle = LoadResource( hInstance, hRsrc ))) return 0;
1482 size = SizeofResource( hInstance, hRsrc );
1483 bits = LockResource( handle );
1484
1485 if (!fCursor)
1486 {
1487 hotspot.x = width / 2;
1488 hotspot.y = height / 2;
1489 }
1490 else /* get the hotspot */
1491 {
1492 const SHORT *pt = (const SHORT *)bits;
1493 hotspot.x = pt[0];
1494 hotspot.y = pt[1];
1495 bits += 2 * sizeof(SHORT);
1496 size -= 2 * sizeof(SHORT);
1497 }
1498 hIcon = create_icon_from_bmi( (const BITMAPINFO *)bits, size, hInstance, name, hRsrc,
1499 hotspot, !fCursor, width, height, loadflags );
1500 FreeResource( handle );
1501 return hIcon;
1502 }
1503
1504
1505 /***********************************************************************
1506 * CreateCursor (USER32.@)
1507 */
1508 HCURSOR WINAPI CreateCursor( HINSTANCE hInstance,
1509 INT xHotSpot, INT yHotSpot,
1510 INT nWidth, INT nHeight,
1511 LPCVOID lpANDbits, LPCVOID lpXORbits )
1512 {
1513 ICONINFO info;
1514 HCURSOR hCursor;
1515
1516 TRACE_(cursor)("%dx%d spot=%d,%d xor=%p and=%p\n",
1517 nWidth, nHeight, xHotSpot, yHotSpot, lpXORbits, lpANDbits);
1518
1519 info.fIcon = FALSE;
1520 info.xHotspot = xHotSpot;
1521 info.yHotspot = yHotSpot;
1522 info.hbmMask = CreateBitmap( nWidth, nHeight, 1, 1, lpANDbits );
1523 info.hbmColor = CreateBitmap( nWidth, nHeight, 1, 1, lpXORbits );
1524 hCursor = CreateIconIndirect( &info );
1525 DeleteObject( info.hbmMask );
1526 DeleteObject( info.hbmColor );
1527 return hCursor;
1528 }
1529
1530
1531 /***********************************************************************
1532 * CreateIcon (USER32.@)
1533 *
1534 * Creates an icon based on the specified bitmaps. The bitmaps must be
1535 * provided in a device dependent format and will be resized to
1536 * (SM_CXICON,SM_CYICON) and depth converted to match the screen's color
1537 * depth. The provided bitmaps must be top-down bitmaps.
1538 * Although Windows does not support 15bpp(*) this API must support it
1539 * for Winelib applications.
1540 *
1541 * (*) Windows does not support 15bpp but it supports the 555 RGB 16bpp
1542 * format!
1543 *
1544 * RETURNS
1545 * Success: handle to an icon
1546 * Failure: NULL
1547 *
1548 * FIXME: Do we need to resize the bitmaps?
1549 */
1550 HICON WINAPI CreateIcon(
1551 HINSTANCE hInstance, /* [in] the application's hInstance */
1552 INT nWidth, /* [in] the width of the provided bitmaps */
1553 INT nHeight, /* [in] the height of the provided bitmaps */
1554 BYTE bPlanes, /* [in] the number of planes in the provided bitmaps */
1555 BYTE bBitsPixel, /* [in] the number of bits per pixel of the lpXORbits bitmap */
1556 LPCVOID lpANDbits, /* [in] a monochrome bitmap representing the icon's mask */
1557 LPCVOID lpXORbits) /* [in] the icon's 'color' bitmap */
1558 {
1559 ICONINFO iinfo;
1560 HICON hIcon;
1561
1562 TRACE_(icon)("%dx%d, planes %d, bpp %d, xor %p, and %p\n",
1563 nWidth, nHeight, bPlanes, bBitsPixel, lpXORbits, lpANDbits);
1564
1565 iinfo.fIcon = TRUE;
1566 iinfo.xHotspot = nWidth / 2;
1567 iinfo.yHotspot = nHeight / 2;
1568 iinfo.hbmMask = CreateBitmap( nWidth, nHeight, 1, 1, lpANDbits );
1569 iinfo.hbmColor = CreateBitmap( nWidth, nHeight, bPlanes, bBitsPixel, lpXORbits );
1570
1571 hIcon = CreateIconIndirect( &iinfo );
1572
1573 DeleteObject( iinfo.hbmMask );
1574 DeleteObject( iinfo.hbmColor );
1575
1576 return hIcon;
1577 }
1578
1579
1580 /***********************************************************************
1581 * CopyIcon (USER32.@)
1582 */
1583 HICON WINAPI CopyIcon( HICON hIcon )
1584 {
1585 struct cursoricon_object *ptrOld, *ptrNew;
1586 HICON hNew;
1587
1588 if (!(ptrOld = get_icon_ptr( hIcon )))
1589 {
1590 SetLastError( ERROR_INVALID_CURSOR_HANDLE );
1591 return 0;
1592 }
1593 if ((hNew = alloc_icon_handle( FALSE, 0 )))
1594 {
1595 struct cursoricon_frame *frameOld, *frameNew;
1596
1597 ptrNew = get_icon_ptr( hNew );
1598 ptrNew->is_icon = ptrOld->is_icon;
1599 ptrNew->hotspot = ptrOld->hotspot;
1600 if (!(frameOld = get_icon_frame( ptrOld, 0 )))
1601 {
1602 release_user_handle_ptr( ptrOld );
1603 SetLastError( ERROR_INVALID_CURSOR_HANDLE );
1604 return 0;
1605 }
1606 if (!(frameNew = get_icon_frame( ptrNew, 0 )))
1607 {
1608 release_icon_frame( ptrOld, frameOld );
1609 release_user_handle_ptr( ptrOld );
1610 SetLastError( ERROR_INVALID_CURSOR_HANDLE );
1611 return 0;
1612 }
1613 frameNew->delay = 0;
1614 frameNew->width = frameOld->width;
1615 frameNew->height = frameOld->height;
1616 frameNew->mask = copy_bitmap( frameOld->mask );
1617 frameNew->color = copy_bitmap( frameOld->color );
1618 frameNew->alpha = copy_bitmap( frameOld->alpha );
1619 release_icon_frame( ptrOld, frameOld );
1620 release_icon_frame( ptrNew, frameNew );
1621 release_user_handle_ptr( ptrNew );
1622 }
1623 release_user_handle_ptr( ptrOld );
1624 return hNew;
1625 }
1626
1627
1628 /***********************************************************************
1629 * DestroyIcon (USER32.@)
1630 */
1631 BOOL WINAPI DestroyIcon( HICON hIcon )
1632 {
1633 BOOL ret = FALSE;
1634 struct cursoricon_object *obj = get_icon_ptr( hIcon );
1635
1636 TRACE_(icon)("%p\n", hIcon );
1637
1638 if (obj)
1639 {
1640 BOOL shared = (obj->rsrc != NULL);
1641 release_user_handle_ptr( obj );
1642 ret = (GetCursor() != hIcon);
1643 if (!shared) free_icon_handle( hIcon );
1644 }
1645 return ret;
1646 }
1647
1648
1649 /***********************************************************************
1650 * DestroyCursor (USER32.@)
1651 */
1652 BOOL WINAPI DestroyCursor( HCURSOR hCursor )
1653 {
1654 return DestroyIcon( hCursor );
1655 }
1656
1657 /***********************************************************************
1658 * DrawIcon (USER32.@)
1659 */
1660 BOOL WINAPI DrawIcon( HDC hdc, INT x, INT y, HICON hIcon )
1661 {
1662 return DrawIconEx( hdc, x, y, hIcon, 0, 0, 0, 0, DI_NORMAL | DI_COMPAT | DI_DEFAULTSIZE );
1663 }
1664
1665 /***********************************************************************
1666 * SetCursor (USER32.@)
1667 *
1668 * Set the cursor shape.
1669 *
1670 * RETURNS
1671 * A handle to the previous cursor shape.
1672 */
1673 HCURSOR WINAPI DECLSPEC_HOTPATCH SetCursor( HCURSOR hCursor /* [in] Handle of cursor to show */ )
1674 {
1675 struct cursoricon_object *obj;
1676 HCURSOR hOldCursor;
1677 int show_count;
1678 BOOL ret;
1679
1680 TRACE("%p\n", hCursor);
1681
1682 SERVER_START_REQ( set_cursor )
1683 {
1684 req->flags = SET_CURSOR_HANDLE;
1685 req->handle = wine_server_user_handle( hCursor );
1686 if ((ret = !wine_server_call_err( req )))
1687 {
1688 hOldCursor = wine_server_ptr_handle( reply->prev_handle );
1689 show_count = reply->prev_count;
1690 }
1691 }
1692 SERVER_END_REQ;
1693
1694 if (!ret) return 0;
1695 USER_Driver->pSetCursor( show_count >= 0 ? hCursor : 0 );
1696
1697 if (!(obj = get_icon_ptr( hOldCursor ))) return 0;
1698 release_user_handle_ptr( obj );
1699 return hOldCursor;
1700 }
1701
1702 /***********************************************************************
1703 * ShowCursor (USER32.@)
1704 */
1705 INT WINAPI DECLSPEC_HOTPATCH ShowCursor( BOOL bShow )
1706 {
1707 HCURSOR cursor;
1708 int increment = bShow ? 1 : -1;
1709 int count;
1710
1711 SERVER_START_REQ( set_cursor )
1712 {
1713 req->flags = SET_CURSOR_COUNT;
1714 req->show_count = increment;
1715 wine_server_call( req );
1716 cursor = wine_server_ptr_handle( reply->prev_handle );
1717 count = reply->prev_count + increment;
1718 }
1719 SERVER_END_REQ;
1720
1721 TRACE("%d, count=%d\n", bShow, count );
1722
1723 if (bShow && !count) USER_Driver->pSetCursor( cursor );
1724 else if (!bShow && count == -1) USER_Driver->pSetCursor( 0 );
1725
1726 return count;
1727 }
1728
1729 /***********************************************************************
1730 * GetCursor (USER32.@)
1731 */
1732 HCURSOR WINAPI GetCursor(void)
1733 {
1734 HCURSOR ret;
1735
1736 SERVER_START_REQ( set_cursor )
1737 {
1738 req->flags = 0;
1739 wine_server_call( req );
1740 ret = wine_server_ptr_handle( reply->prev_handle );
1741 }
1742 SERVER_END_REQ;
1743 return ret;
1744 }
1745
1746
1747 /***********************************************************************
1748 * ClipCursor (USER32.@)
1749 */
1750 BOOL WINAPI DECLSPEC_HOTPATCH ClipCursor( const RECT *rect )
1751 {
1752 BOOL ret;
1753 RECT new_rect;
1754
1755 TRACE( "Clipping to %s\n", wine_dbgstr_rect(rect) );
1756
1757 if (rect && (rect->left > rect->right || rect->top > rect->bottom)) return FALSE;
1758
1759 SERVER_START_REQ( set_cursor )
1760 {
1761 req->clip_msg = WM_WINE_CLIPCURSOR;
1762 if (rect)
1763 {
1764 req->flags = SET_CURSOR_CLIP;
1765 req->clip.left = rect->left;
1766 req->clip.top = rect->top;
1767 req->clip.right = rect->right;
1768 req->clip.bottom = rect->bottom;
1769 }
1770 else req->flags = SET_CURSOR_NOCLIP;
1771
1772 if ((ret = !wine_server_call( req )))
1773 {
1774 new_rect.left = reply->new_clip.left;
1775 new_rect.top = reply->new_clip.top;
1776 new_rect.right = reply->new_clip.right;
1777 new_rect.bottom = reply->new_clip.bottom;
1778 }
1779 }
1780 SERVER_END_REQ;
1781 if (ret) USER_Driver->pClipCursor( &new_rect );
1782 return ret;
1783 }
1784
1785
1786 /***********************************************************************
1787 * GetClipCursor (USER32.@)
1788 */
1789 BOOL WINAPI DECLSPEC_HOTPATCH GetClipCursor( RECT *rect )
1790 {
1791 BOOL ret;
1792
1793 if (!rect) return FALSE;
1794
1795 SERVER_START_REQ( set_cursor )
1796 {
1797 req->flags = 0;
1798 if ((ret = !wine_server_call( req )))
1799 {
1800 rect->left = reply->new_clip.left;
1801 rect->top = reply->new_clip.top;
1802 rect->right = reply->new_clip.right;
1803 rect->bottom = reply->new_clip.bottom;
1804 }
1805 }
1806 SERVER_END_REQ;
1807 return ret;
1808 }
1809
1810
1811 /***********************************************************************
1812 * SetSystemCursor (USER32.@)
1813 */
1814 BOOL WINAPI SetSystemCursor(HCURSOR hcur, DWORD id)
1815 {
1816 FIXME("(%p,%08x),stub!\n", hcur, id);
1817 return TRUE;
1818 }
1819
1820
1821 /**********************************************************************
1822 * LookupIconIdFromDirectoryEx (USER32.@)
1823 */
1824 INT WINAPI LookupIconIdFromDirectoryEx( LPBYTE xdir, BOOL bIcon,
1825 INT width, INT height, UINT cFlag )
1826 {
1827 const CURSORICONDIR *dir = (const CURSORICONDIR*)xdir;
1828 UINT retVal = 0;
1829 if( dir && !dir->idReserved && (dir->idType & 3) )
1830 {
1831 const CURSORICONDIRENTRY* entry;
1832
1833 const HDC hdc = GetDC(0);
1834 const int depth = (cFlag & LR_MONOCHROME) ?
1835 1 : GetDeviceCaps(hdc, BITSPIXEL);
1836 ReleaseDC(0, hdc);
1837
1838 if( bIcon )
1839 entry = CURSORICON_FindBestIconRes( dir, ~0u, width, height, depth, LR_DEFAULTSIZE );
1840 else
1841 entry = CURSORICON_FindBestCursorRes( dir, ~0u, width, height, depth, LR_DEFAULTSIZE );
1842
1843 if( entry ) retVal = entry->wResId;
1844 }
1845 else WARN_(cursor)("invalid resource directory\n");
1846 return retVal;
1847 }
1848
1849 /**********************************************************************
1850 * LookupIconIdFromDirectory (USER32.@)
1851 */
1852 INT WINAPI LookupIconIdFromDirectory( LPBYTE dir, BOOL bIcon )
1853 {
1854 return LookupIconIdFromDirectoryEx( dir, bIcon, 0, 0, bIcon ? 0 : LR_MONOCHROME );
1855 }
1856
1857 /***********************************************************************
1858 * LoadCursorW (USER32.@)
1859 */
1860 HCURSOR WINAPI LoadCursorW(HINSTANCE hInstance, LPCWSTR name)
1861 {
1862 TRACE("%p, %s\n", hInstance, debugstr_w(name));
1863
1864 return LoadImageW( hInstance, name, IMAGE_CURSOR, 0, 0,
1865 LR_SHARED | LR_DEFAULTSIZE );
1866 }
1867
1868 /***********************************************************************
1869 * LoadCursorA (USER32.@)
1870 */
1871 HCURSOR WINAPI LoadCursorA(HINSTANCE hInstance, LPCSTR name)
1872 {
1873 TRACE("%p, %s\n", hInstance, debugstr_a(name));
1874
1875 return LoadImageA( hInstance, name, IMAGE_CURSOR, 0, 0,
1876 LR_SHARED | LR_DEFAULTSIZE );
1877 }
1878
1879 /***********************************************************************
1880 * LoadCursorFromFileW (USER32.@)
1881 */
1882 HCURSOR WINAPI LoadCursorFromFileW (LPCWSTR name)
1883 {
1884 TRACE("%s\n", debugstr_w(name));
1885
1886 return LoadImageW( 0, name, IMAGE_CURSOR, 0, 0,
1887 LR_LOADFROMFILE | LR_DEFAULTSIZE );
1888 }
1889
1890 /***********************************************************************
1891 * LoadCursorFromFileA (USER32.@)
1892 */
1893 HCURSOR WINAPI LoadCursorFromFileA (LPCSTR name)
1894 {
1895 TRACE("%s\n", debugstr_a(name));
1896
1897 return LoadImageA( 0, name, IMAGE_CURSOR, 0, 0,
1898 LR_LOADFROMFILE | LR_DEFAULTSIZE );
1899 }
1900
1901 /***********************************************************************
1902 * LoadIconW (USER32.@)
1903 */
1904 HICON WINAPI LoadIconW(HINSTANCE hInstance, LPCWSTR name)
1905 {
1906 TRACE("%p, %s\n", hInstance, debugstr_w(name));
1907
1908 return LoadImageW( hInstance, name, IMAGE_ICON, 0, 0,
1909 LR_SHARED | LR_DEFAULTSIZE );
1910 }
1911
1912 /***********************************************************************
1913 * LoadIconA (USER32.@)
1914 */
1915 HICON WINAPI LoadIconA(HINSTANCE hInstance, LPCSTR name)
1916 {
1917 TRACE("%p, %s\n", hInstance, debugstr_a(name));
1918
1919 return LoadImageA( hInstance, name, IMAGE_ICON, 0, 0,
1920 LR_SHARED | LR_DEFAULTSIZE );
1921 }
1922
1923 /**********************************************************************
1924 * GetCursorFrameInfo (USER32.@)
1925 *
1926 * NOTES
1927 * So far no use has been found for the second parameter, it is currently presumed
1928 * that this parameter is reserved for future use.
1929 *
1930 * PARAMS
1931 * hCursor [I] Handle to cursor for which to retrieve information
1932 * reserved [I] No purpose has been found for this parameter (may be NULL)
1933 * istep [I] The step of the cursor for which to retrieve information
1934 * rate_jiffies [O] Pointer to DWORD that receives the frame-specific delay (cannot be NULL)
1935 * num_steps [O] Pointer to DWORD that receives the number of steps in the cursor (cannot be NULL)
1936 *
1937 * RETURNS
1938 * Success: Handle to a frame of the cursor (specified by istep)
1939 * Failure: NULL cursor (0)
1940 */
1941 HCURSOR WINAPI GetCursorFrameInfo(HCURSOR hCursor, DWORD reserved, DWORD istep, DWORD *rate_jiffies, DWORD *num_steps)
1942 {
1943 struct cursoricon_object *ptr;
1944 HCURSOR ret = 0;
1945 UINT icon_steps;
1946
1947 if (rate_jiffies == NULL || num_steps == NULL) return 0;
1948
1949 if (!(ptr = get_icon_ptr( hCursor ))) return 0;
1950
1951 TRACE("%p => %d %d %p %p\n", hCursor, reserved, istep, rate_jiffies, num_steps);
1952 if (reserved != 0)
1953 FIXME("Second parameter non-zero (%d), please report this!\n", reserved);
1954
1955 icon_steps = get_icon_steps(ptr);
1956 if (istep < icon_steps || !ptr->is_ani)
1957 {
1958 struct animated_cursoricon_object *ani_icon_data = (struct animated_cursoricon_object *) ptr;
1959 UINT icon_frames = 1;
1960
1961 if (ptr->is_ani)
1962 icon_frames = ani_icon_data->num_frames;
1963 if (ptr->is_ani && icon_frames > 1)
1964 ret = ani_icon_data->frames[istep];
1965 else
1966 ret = hCursor;
1967 if (icon_frames == 1)
1968 {
1969 *rate_jiffies = 0;
1970 *num_steps = 1;
1971 }
1972 else if (icon_steps == 1)
1973 {
1974 *num_steps = ~0;
1975 *rate_jiffies = ptr->delay;
1976 }
1977 else if (istep < icon_steps)
1978 {
1979 struct cursoricon_frame *frame;
1980
1981 *num_steps = icon_steps;
1982 frame = get_icon_frame( ptr, istep );
1983 if (get_icon_steps(ptr) == 1)
1984 *num_steps = ~0;
1985 else
1986 *num_steps = get_icon_steps(ptr);
1987 /* If this specific frame does not have a delay then use the global delay */
1988 if (frame->delay == ~0)
1989 *rate_jiffies = ptr->delay;
1990 else
1991 *rate_jiffies = frame->delay;
1992 release_icon_frame( ptr, frame );
1993 }
1994 }
1995
1996 release_user_handle_ptr( ptr );
1997
1998 return ret;
1999 }
2000
2001 /**********************************************************************
2002 * GetIconInfo (USER32.@)
2003 */
2004 BOOL WINAPI GetIconInfo(HICON hIcon, PICONINFO iconinfo)
2005 {
2006 ICONINFOEXW infoW;
2007
2008 infoW.cbSize = sizeof(infoW);
2009 if (!GetIconInfoExW( hIcon, &infoW )) return FALSE;
2010 iconinfo->fIcon = infoW.fIcon;
2011 iconinfo->xHotspot = infoW.xHotspot;
2012 iconinfo->yHotspot = infoW.yHotspot;
2013 iconinfo->hbmColor = infoW.hbmColor;
2014 iconinfo->hbmMask = infoW.hbmMask;
2015 return TRUE;
2016 }
2017
2018 /**********************************************************************
2019 * GetIconInfoExA (USER32.@)
2020 */
2021 BOOL WINAPI GetIconInfoExA( HICON icon, ICONINFOEXA *info )
2022 {
2023 ICONINFOEXW infoW;
2024
2025 if (info->cbSize != sizeof(*info))
2026 {
2027 SetLastError( ERROR_INVALID_PARAMETER );
2028 return FALSE;
2029 }
2030 infoW.cbSize = sizeof(infoW);
2031 if (!GetIconInfoExW( icon, &infoW )) return FALSE;
2032 info->fIcon = infoW.fIcon;
2033 info->xHotspot = infoW.xHotspot;
2034 info->yHotspot = infoW.yHotspot;
2035 info->hbmColor = infoW.hbmColor;
2036 info->hbmMask = infoW.hbmMask;
2037 info->wResID = infoW.wResID;
2038 WideCharToMultiByte( CP_ACP, 0, infoW.szModName, -1, info->szModName, MAX_PATH, NULL, NULL );
2039 WideCharToMultiByte( CP_ACP, 0, infoW.szResName, -1, info->szResName, MAX_PATH, NULL, NULL );
2040 return TRUE;
2041 }
2042
2043 /**********************************************************************
2044 * GetIconInfoExW (USER32.@)
2045 */
2046 BOOL WINAPI GetIconInfoExW( HICON icon, ICONINFOEXW *info )
2047 {
2048 struct cursoricon_frame *frame;
2049 struct cursoricon_object *ptr;
2050 HMODULE module;
2051 BOOL ret = TRUE;
2052
2053 if (info->cbSize != sizeof(*info))
2054 {
2055 SetLastError( ERROR_INVALID_PARAMETER );
2056 return FALSE;
2057 }
2058 if (!(ptr = get_icon_ptr( icon )))
2059 {
2060 SetLastError( ERROR_INVALID_CURSOR_HANDLE );
2061 return FALSE;
2062 }
2063
2064 frame = get_icon_frame( ptr, 0 );
2065 if (!frame)
2066 {
2067 release_user_handle_ptr( ptr );
2068 SetLastError( ERROR_INVALID_CURSOR_HANDLE );
2069 return FALSE;
2070 }
2071
2072 TRACE("%p => %dx%d\n", icon, frame->width, frame->height);
2073
2074 info->fIcon = ptr->is_icon;
2075 info->xHotspot = ptr->hotspot.x;
2076 info->yHotspot = ptr->hotspot.y;
2077 info->hbmColor = copy_bitmap( frame->color );
2078 info->hbmMask = copy_bitmap( frame->mask );
2079 info->wResID = 0;
2080 info->szModName[0] = 0;
2081 info->szResName[0] = 0;
2082 if (ptr->module)
2083 {
2084 if (IS_INTRESOURCE( ptr->resname )) info->wResID = LOWORD( ptr->resname );
2085 else lstrcpynW( info->szResName, ptr->resname, MAX_PATH );
2086 }
2087 if (!info->hbmMask || (!info->hbmColor && frame->color))
2088 {
2089 DeleteObject( info->hbmMask );
2090 DeleteObject( info->hbmColor );
2091 ret = FALSE;
2092 }
2093 module = ptr->module;
2094 release_icon_frame( ptr, frame );
2095 release_user_handle_ptr( ptr );
2096 if (ret && module) GetModuleFileNameW( module, info->szModName, MAX_PATH );
2097 return ret;
2098 }
2099
2100 /* copy an icon bitmap, even when it can't be selected into a DC */
2101 /* helper for CreateIconIndirect */
2102 static void stretch_blt_icon( HDC hdc_dst, int dst_x, int dst_y, int dst_width, int dst_height,
2103 HBITMAP src, int width, int height )
2104 {
2105 HDC hdc = CreateCompatibleDC( 0 );
2106
2107 if (!SelectObject( hdc, src )) /* do it the hard way */
2108 {
2109 BITMAPINFO *info;
2110 void *bits;
2111
2112 if (!(info = HeapAlloc( GetProcessHeap(), 0, FIELD_OFFSET( BITMAPINFO, bmiColors[256] )))) return;
2113 info->bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
2114 info->bmiHeader.biWidth = width;
2115 info->bmiHeader.biHeight = height;
2116 info->bmiHeader.biPlanes = GetDeviceCaps( hdc_dst, PLANES );
2117 info->bmiHeader.biBitCount = GetDeviceCaps( hdc_dst, BITSPIXEL );
2118 info->bmiHeader.biCompression = BI_RGB;
2119 info->bmiHeader.biSizeImage = get_dib_image_size( width, height, info->bmiHeader.biBitCount );
2120 info->bmiHeader.biXPelsPerMeter = 0;
2121 info->bmiHeader.biYPelsPerMeter = 0;
2122 info->bmiHeader.biClrUsed = 0;
2123 info->bmiHeader.biClrImportant = 0;
2124 bits = HeapAlloc( GetProcessHeap(), 0, info->bmiHeader.biSizeImage );
2125 if (bits && GetDIBits( hdc, src, 0, height, bits, info, DIB_RGB_COLORS ))
2126 StretchDIBits( hdc_dst, dst_x, dst_y, dst_width, dst_height,
2127 0, 0, width, height, bits, info, DIB_RGB_COLORS, SRCCOPY );
2128
2129 HeapFree( GetProcessHeap(), 0, bits );
2130 HeapFree( GetProcessHeap(), 0, info );
2131 }
2132 else StretchBlt( hdc_dst, dst_x, dst_y, dst_width, dst_height, hdc, 0, 0, width, height, SRCCOPY );
2133
2134 DeleteDC( hdc );
2135 }
2136
2137 /**********************************************************************
2138 * CreateIconIndirect (USER32.@)
2139 */
2140 HICON WINAPI CreateIconIndirect(PICONINFO iconinfo)
2141 {
2142 BITMAP bmpXor, bmpAnd;
2143 HICON hObj;
2144 HBITMAP color = 0, mask;
2145 int width, height;
2146 HDC hdc;
2147
2148 TRACE("color %p, mask %p, hotspot %ux%u, fIcon %d\n",
2149 iconinfo->hbmColor, iconinfo->hbmMask,
2150 iconinfo->xHotspot, iconinfo->yHotspot, iconinfo->fIcon);
2151
2152 if (!iconinfo->hbmMask) return 0;
2153
2154 GetObjectW( iconinfo->hbmMask, sizeof(bmpAnd), &bmpAnd );
2155 TRACE("mask: width %d, height %d, width bytes %d, planes %u, bpp %u\n",
2156 bmpAnd.bmWidth, bmpAnd.bmHeight, bmpAnd.bmWidthBytes,
2157 bmpAnd.bmPlanes, bmpAnd.bmBitsPixel);
2158
2159 if (iconinfo->hbmColor)
2160 {
2161 GetObjectW( iconinfo->hbmColor, sizeof(bmpXor), &bmpXor );
2162 TRACE("color: width %d, height %d, width bytes %d, planes %u, bpp %u\n",
2163 bmpXor.bmWidth, bmpXor.bmHeight, bmpXor.bmWidthBytes,
2164 bmpXor.bmPlanes, bmpXor.bmBitsPixel);
2165
2166 width = bmpXor.bmWidth;
2167 height = bmpXor.bmHeight;
2168 if (bmpXor.bmPlanes * bmpXor.bmBitsPixel != 1 || bmpAnd.bmPlanes * bmpAnd.bmBitsPixel != 1)
2169 {
2170 color = CreateCompatibleBitmap( get_screen_dc(), width, height );
2171 mask = CreateBitmap( width, height, 1, 1, NULL );
2172 }
2173 else mask = CreateBitmap( width, height * 2, 1, 1, NULL );
2174 }
2175 else
2176 {
2177 width = bmpAnd.bmWidth;
2178 height = bmpAnd.bmHeight;
2179 mask = CreateBitmap( width, height, 1, 1, NULL );
2180 }
2181
2182 hdc = CreateCompatibleDC( 0 );
2183 SelectObject( hdc, mask );
2184 stretch_blt_icon( hdc, 0, 0, width, height, iconinfo->hbmMask, bmpAnd.bmWidth, bmpAnd.bmHeight );
2185
2186 if (color)
2187 {
2188 SelectObject( hdc, color );
2189 stretch_blt_icon( hdc, 0, 0, width, height, iconinfo->hbmColor, width, height );
2190 }
2191 else if (iconinfo->hbmColor)
2192 {
2193 stretch_blt_icon( hdc, 0, height, width, height, iconinfo->hbmColor, width, height );
2194 }
2195 else height /= 2;
2196
2197 DeleteDC( hdc );
2198
2199 hObj = alloc_icon_handle( FALSE, 0 );
2200 if (hObj)
2201 {
2202 struct cursoricon_object *info = get_icon_ptr( hObj );
2203 struct cursoricon_frame *frame;
2204
2205 info->is_icon = iconinfo->fIcon;
2206 frame = get_icon_frame( info, 0 );
2207 frame->delay = ~0;
2208 frame->width = width;
2209 frame->height = height;
2210 frame->color = color;
2211 frame->mask = mask;
2212 frame->alpha = create_alpha_bitmap( iconinfo->hbmColor, NULL, NULL );
2213 release_icon_frame( info, frame );
2214 if (info->is_icon)
2215 {
2216 info->hotspot.x = width / 2;
2217 info->hotspot.y = height / 2;
2218 }
2219 else
2220 {
2221 info->hotspot.x = iconinfo->xHotspot;
2222 info->hotspot.y = iconinfo->yHotspot;
2223 }
2224
2225 release_user_handle_ptr( info );
2226 }
2227 return hObj;
2228 }
2229
2230 /******************************************************************************
2231 * DrawIconEx (USER32.@) Draws an icon or cursor on device context
2232 *
2233 * NOTES
2234 * Why is this using SM_CXICON instead of SM_CXCURSOR?
2235 *
2236 * PARAMS
2237 * hdc [I] Handle to device context
2238 * x0 [I] X coordinate of upper left corner
2239 * y0 [I] Y coordinate of upper left corner
2240 * hIcon [I] Handle to icon to draw
2241 * cxWidth [I] Width of icon
2242 * cyWidth [I] Height of icon
2243 * istep [I] Index of frame in animated cursor
2244 * hbr [I] Handle to background brush
2245 * flags [I] Icon-drawing flags
2246 *
2247 * RETURNS
2248 * Success: TRUE
2249 * Failure: FALSE
2250 */
2251 BOOL WINAPI DrawIconEx( HDC hdc, INT x0, INT y0, HICON hIcon,
2252 INT cxWidth, INT cyWidth, UINT istep,
2253 HBRUSH hbr, UINT flags )
2254 {
2255 struct cursoricon_frame *frame;
2256 struct cursoricon_object *ptr;
2257 HDC hdc_dest, hMemDC;
2258 BOOL result = FALSE, DoOffscreen;
2259 HBITMAP hB_off = 0;
2260 COLORREF oldFg, oldBg;
2261 INT x, y, nStretchMode;
2262
2263 TRACE_(icon)("(hdc=%p,pos=%d.%d,hicon=%p,extend=%d.%d,istep=%d,br=%p,flags=0x%08x)\n",
2264 hdc,x0,y0,hIcon,cxWidth,cyWidth,istep,hbr,flags );
2265
2266 if (!(ptr = get_icon_ptr( hIcon ))) return FALSE;
2267 if (istep >= get_icon_steps( ptr ))
2268 {
2269 TRACE_(icon)("Stepped past end of animated frames=%d\n", istep);
2270 release_user_handle_ptr( ptr );
2271 return FALSE;
2272 }
2273 if (!(frame = get_icon_frame( ptr, istep )))
2274 {
2275 FIXME_(icon)("Error retrieving icon frame %d\n", istep);
2276 release_user_handle_ptr( ptr );
2277 return FALSE;
2278 }
2279 if (!(hMemDC = CreateCompatibleDC( hdc )))
2280 {
2281 release_icon_frame( ptr, frame );
2282 release_user_handle_ptr( ptr );
2283 return FALSE;
2284 }
2285
2286 if (flags & DI_NOMIRROR)
2287 FIXME_(icon)("Ignoring flag DI_NOMIRROR\n");
2288
2289 /* Calculate the size of the destination image. */
2290 if (cxWidth == 0)
2291 {
2292 if (flags & DI_DEFAULTSIZE)
2293 cxWidth = GetSystemMetrics (SM_CXICON);
2294 else
2295 cxWidth = frame->width;
2296 }
2297 if (cyWidth == 0)
2298 {
2299 if (flags & DI_DEFAULTSIZE)
2300 cyWidth = GetSystemMetrics (SM_CYICON);
2301 else
2302 cyWidth = frame->height;
2303 }
2304
2305 DoOffscreen = (GetObjectType( hbr ) == OBJ_BRUSH);
2306
2307 if (DoOffscreen) {
2308 RECT r;
2309
2310 SetRect(&r, 0, 0, cxWidth, cxWidth);
2311
2312 if (!(hdc_dest = CreateCompatibleDC(hdc))) goto failed;
2313 if (!(hB_off = CreateCompatibleBitmap(hdc, cxWidth, cyWidth)))
2314 {
2315 DeleteDC( hdc_dest );
2316 goto failed;
2317 }
2318 SelectObject(hdc_dest, hB_off);
2319 FillRect(hdc_dest, &r, hbr);
2320 x = y = 0;
2321 }
2322 else
2323 {
2324 hdc_dest = hdc;
2325 x = x0;
2326 y = y0;
2327 }
2328
2329 nStretchMode = SetStretchBltMode (hdc, STRETCH_DELETESCANS);
2330
2331 oldFg = SetTextColor( hdc, RGB(0,0,0) );
2332 oldBg = SetBkColor( hdc, RGB(255,255,255) );
2333
2334 if (frame->alpha && (flags & DI_IMAGE))
2335 {
2336 BOOL alpha_blend = TRUE;
2337
2338 if (GetObjectType( hdc_dest ) == OBJ_MEMDC)
2339 {
2340 BITMAP bm;
2341 HBITMAP bmp = GetCurrentObject( hdc_dest, OBJ_BITMAP );
2342 alpha_blend = GetObjectW( bmp, sizeof(bm), &bm ) && bm.bmBitsPixel > 8;
2343 }
2344 if (alpha_blend)
2345 {
2346 BLENDFUNCTION pixelblend = { AC_SRC_OVER, 0, 255, AC_SRC_ALPHA };
2347 SelectObject( hMemDC, frame->alpha );
2348 if (GdiAlphaBlend( hdc_dest, x, y, cxWidth, cyWidth, hMemDC,
2349 0, 0, frame->width, frame->height,
2350 pixelblend )) goto done;
2351 }
2352 }
2353
2354 if (flags & DI_MASK)
2355 {
2356 DWORD rop = (flags & DI_IMAGE) ? SRCAND : SRCCOPY;
2357 SelectObject( hMemDC, frame->mask );
2358 StretchBlt( hdc_dest, x, y, cxWidth, cyWidth,
2359 hMemDC, 0, 0, frame->width, frame->height, rop );
2360 }
2361
2362 if (flags & DI_IMAGE)
2363 {
2364 if (frame->color)
2365 {
2366 DWORD rop = (flags & DI_MASK) ? SRCINVERT : SRCCOPY;
2367 SelectObject( hMemDC, frame->color );
2368 StretchBlt( hdc_dest, x, y, cxWidth, cyWidth,
2369 hMemDC, 0, 0, frame->width, frame->height, rop );
2370 }
2371 else
2372 {
2373 DWORD rop = (flags & DI_MASK) ? SRCINVERT : SRCCOPY;
2374 SelectObject( hMemDC, frame->mask );
2375 StretchBlt( hdc_dest, x, y, cxWidth, cyWidth,
2376 hMemDC, 0, frame->height, frame->width,
2377 frame->height, rop );
2378 }
2379 }
2380
2381 done:
2382 if (DoOffscreen) BitBlt( hdc, x0, y0, cxWidth, cyWidth, hdc_dest, 0, 0, SRCCOPY );
2383
2384 SetTextColor( hdc, oldFg );
2385 SetBkColor( hdc, oldBg );
2386 SetStretchBltMode (hdc, nStretchMode);
2387 result = TRUE;
2388 if (hdc_dest != hdc) DeleteDC( hdc_dest );
2389 if (hB_off) DeleteObject(hB_off);
2390 failed:
2391 DeleteDC( hMemDC );
2392 release_icon_frame( ptr, frame );
2393 release_user_handle_ptr( ptr );
2394 return result;
2395 }
2396
2397 /***********************************************************************
2398 * DIB_FixColorsToLoadflags
2399 *
2400 * Change color table entries when LR_LOADTRANSPARENT or LR_LOADMAP3DCOLORS
2401 * are in loadflags
2402 */
2403 static void DIB_FixColorsToLoadflags(BITMAPINFO * bmi, UINT loadflags, BYTE pix)
2404 {
2405 int colors;
2406 COLORREF c_W, c_S, c_F, c_L, c_C;
2407 int incr,i;
2408 RGBQUAD *ptr;
2409 int bitmap_type;
2410 LONG width;
2411 LONG height;
2412 WORD bpp;
2413 DWORD compr;
2414
2415 if (((bitmap_type = DIB_GetBitmapInfo((BITMAPINFOHEADER*) bmi, &width, &height, &bpp, &compr)) == -1))
2416 {
2417 WARN_(resource)("Invalid bitmap\n");
2418 return;
2419 }
2420
2421 if (bpp > 8) return;
2422
2423 if (bitmap_type == 0) /* BITMAPCOREHEADER */
2424 {
2425 incr = 3;
2426 colors = 1 << bpp;
2427 }
2428 else
2429 {
2430 incr = 4;
2431 colors = bmi->bmiHeader.biClrUsed;
2432 if (colors > 256) colors = 256;
2433 if (!colors && (bpp <= 8)) colors = 1 << bpp;
2434 }
2435
2436 c_W = GetSysColor(COLOR_WINDOW);
2437 c_S = GetSysColor(COLOR_3DSHADOW);
2438 c_F = GetSysColor(COLOR_3DFACE);
2439 c_L = GetSysColor(COLOR_3DLIGHT);
2440
2441 if (loadflags & LR_LOADTRANSPARENT) {
2442 switch (bpp) {
2443 case 1: pix = pix >> 7; break;
2444 case 4: pix = pix >> 4; break;
2445 case 8: break;
2446 default:
2447 WARN_(resource)("(%d): Unsupported depth\n", bpp);
2448 return;
2449 }
2450 if (pix >= colors) {
2451 WARN_(resource)("pixel has color index greater than biClrUsed!\n");
2452 return;
2453 }
2454 if (loadflags & LR_LOADMAP3DCOLORS) c_W = c_F;
2455 ptr = (RGBQUAD*)((char*)bmi->bmiColors+pix*incr);
2456 ptr->rgbBlue = GetBValue(c_W);
2457 ptr->rgbGreen = GetGValue(c_W);
2458 ptr->rgbRed = GetRValue(c_W);
2459 }
2460 if (loadflags & LR_LOADMAP3DCOLORS)
2461 for (i=0; i<colors; i++) {
2462 ptr = (RGBQUAD*)((char*)bmi->bmiColors+i*incr);
2463 c_C = RGB(ptr->rgbRed, ptr->rgbGreen, ptr->rgbBlue);
2464 if (c_C == RGB(128, 128, 128)) {
2465 ptr->rgbRed = GetRValue(c_S);
2466 ptr->rgbGreen = GetGValue(c_S);
2467 ptr->rgbBlue = GetBValue(c_S);
2468 } else if (c_C == RGB(192, 192, 192)) {
2469 ptr->rgbRed = GetRValue(c_F);
2470 ptr->rgbGreen = GetGValue(c_F);
2471 ptr->rgbBlue = GetBValue(c_F);
2472 } else if (c_C == RGB(223, 223, 223)) {
2473 ptr->rgbRed = GetRValue(c_L);
2474 ptr->rgbGreen = GetGValue(c_L);
2475 ptr->rgbBlue = GetBValue(c_L);
2476 }
2477 }
2478 }
2479
2480
2481 /**********************************************************************
2482 * BITMAP_Load
2483 */
2484 static HBITMAP BITMAP_Load( HINSTANCE instance, LPCWSTR name,
2485 INT desiredx, INT desiredy, UINT loadflags )
2486 {
2487 HBITMAP hbitmap = 0, orig_bm;
2488 HRSRC hRsrc;
2489 HGLOBAL handle;
2490 const char *ptr = NULL;
2491 BITMAPINFO *info, *fix_info = NULL, *scaled_info = NULL;
2492 int size;
2493 BYTE pix;
2494 char *bits;
2495 LONG width, height, new_width, new_height;
2496 WORD bpp_dummy;
2497 DWORD compr_dummy, offbits = 0;
2498 INT bm_type;
2499 HDC screen_mem_dc = NULL;
2500 HDC screen_dc;
2501
2502 if (!(loadflags & LR_LOADFROMFILE))
2503 {
2504 if (!instance)
2505 {
2506 /* OEM bitmap: try to load the resource from user32.dll */
2507 instance = user32_module;
2508 }
2509
2510 if (!(hRsrc = FindResourceW( instance, name, (LPWSTR)RT_BITMAP ))) return 0;
2511 if (!(handle = LoadResource( instance, hRsrc ))) return 0;
2512
2513 if ((info = LockResource( handle )) == NULL) return 0;
2514 }
2515 else
2516 {
2517 BITMAPFILEHEADER * bmfh;
2518
2519 if (!(ptr = map_fileW( name, NULL ))) return 0;
2520 info = (BITMAPINFO *)(ptr + sizeof(BITMAPFILEHEADER));
2521 bmfh = (BITMAPFILEHEADER *)ptr;
2522 if (bmfh->bfType != 0x4d42 /* 'BM' */)
2523 {
2524 WARN("Invalid/unsupported bitmap format!\n");
2525 goto end;
2526 }
2527 if (bmfh->bfOffBits) offbits = bmfh->bfOffBits - sizeof(BITMAPFILEHEADER);
2528 }
2529
2530 bm_type = DIB_GetBitmapInfo( &info->bmiHeader, &width, &height,
2531 &bpp_dummy, &compr_dummy);
2532 if (bm_type == -1)
2533 {
2534 WARN("Invalid bitmap format!\n");
2535 goto end;
2536 }
2537
2538 size = bitmap_info_size(info, DIB_RGB_COLORS);
2539 fix_info = HeapAlloc(GetProcessHeap(), 0, size);
2540 scaled_info = HeapAlloc(GetProcessHeap(), 0, size);
2541
2542 if (!fix_info || !scaled_info) goto end;
2543 memcpy(fix_info, info, size);
2544
2545 pix = *((LPBYTE)info + size);
2546 DIB_FixColorsToLoadflags(fix_info, loadflags, pix);
2547
2548 memcpy(scaled_info, fix_info, size);
2549
2550 if(desiredx != 0)
2551 new_width = desiredx;
2552 else
2553 new_width = width;
2554
2555 if(desiredy != 0)
2556 new_height = height > 0 ? desiredy : -desiredy;
2557 else
2558 new_height = height;
2559
2560 if(bm_type == 0)
2561 {
2562 BITMAPCOREHEADER *core = (BITMAPCOREHEADER *)&scaled_info->bmiHeader;
2563 core->bcWidth = new_width;
2564 core->bcHeight = new_height;
2565 }
2566 else
2567 {
2568 /* Some sanity checks for BITMAPINFO (not applicable to BITMAPCOREINFO) */
2569 if (info->bmiHeader.biHeight > 65535 || info->bmiHeader.biWidth > 65535) {
2570 WARN("Broken BitmapInfoHeader!\n");
2571 goto end;
2572 }
2573
2574 scaled_info->bmiHeader.biWidth = new_width;
2575 scaled_info->bmiHeader.biHeight = new_height;
2576 }
2577
2578 if (new_height < 0) new_height = -new_height;
2579
2580 screen_dc = get_screen_dc();
2581 if (!(screen_mem_dc = CreateCompatibleDC( screen_dc ))) goto end;
2582
2583 bits = (char *)info + (offbits ? offbits : size);
2584
2585 if (loadflags & LR_CREATEDIBSECTION)
2586 {
2587 scaled_info->bmiHeader.biCompression = 0; /* DIBSection can't be compressed */
2588 hbitmap = CreateDIBSection(screen_dc, scaled_info, DIB_RGB_COLORS, NULL, 0, 0);
2589 }
2590 else
2591 {
2592 if (is_dib_monochrome(fix_info))
2593 hbitmap = CreateBitmap(new_width, new_height, 1, 1, NULL);
2594 else
2595 hbitmap = CreateCompatibleBitmap(screen_dc, new_width, new_height);
2596 }
2597
2598 orig_bm = SelectObject(screen_mem_dc, hbitmap);
2599 StretchDIBits(screen_mem_dc, 0, 0, new_width, new_height, 0, 0, width, height, bits, fix_info, DIB_RGB_COLORS, SRCCOPY);
2600 SelectObject(screen_mem_dc, orig_bm);
2601
2602 end:
2603 if (screen_mem_dc) DeleteDC(screen_mem_dc);
2604 HeapFree(GetProcessHeap(), 0, scaled_info);
2605 HeapFree(GetProcessHeap(), 0, fix_info);
2606 if (loadflags & LR_LOADFROMFILE) UnmapViewOfFile( ptr );
2607
2608 return hbitmap;
2609 }
2610
2611 /**********************************************************************
2612 * LoadImageA (USER32.@)
2613 *
2614 * See LoadImageW.
2615 */
2616 HANDLE WINAPI LoadImageA( HINSTANCE hinst, LPCSTR name, UINT type,
2617 INT desiredx, INT desiredy, UINT loadflags)
2618 {
2619 HANDLE res;
2620 LPWSTR u_name;
2621
2622 if (IS_INTRESOURCE(name))
2623 return LoadImageW(hinst, (LPCWSTR)name, type, desiredx, desiredy, loadflags);
2624
2625 __TRY {
2626 DWORD len = MultiByteToWideChar( CP_ACP, 0, name, -1, NULL, 0 );
2627 u_name = HeapAlloc( GetProcessHeap(), 0, len * sizeof(WCHAR) );
2628 MultiByteToWideChar( CP_ACP, 0, name, -1, u_name, len );
2629 }
2630 __EXCEPT_PAGE_FAULT {
2631 SetLastError( ERROR_INVALID_PARAMETER );
2632 return 0;
2633 }
2634 __ENDTRY
2635 res = LoadImageW(hinst, u_name, type, desiredx, desiredy, loadflags);
2636 HeapFree(GetProcessHeap(), 0, u_name);
2637 return res;
2638 }
2639
2640
2641 /******************************************************************************
2642 * LoadImageW (USER32.@) Loads an icon, cursor, or bitmap
2643 *
2644 * PARAMS
2645 * hinst [I] Handle of instance that contains image
2646 * name [I] Name of image
2647 * type [I] Type of image
2648 * desiredx [I] Desired width
2649 * desiredy [I] Desired height
2650 * loadflags [I] Load flags
2651 *
2652 * RETURNS
2653 * Success: Handle to newly loaded image
2654 * Failure: NULL
2655 *
2656 * FIXME: Implementation lacks some features, see LR_ defines in winuser.h
2657 */
2658 HANDLE WINAPI LoadImageW( HINSTANCE hinst, LPCWSTR name, UINT type,
2659 INT desiredx, INT desiredy, UINT loadflags )
2660 {
2661 int depth;
2662
2663 TRACE_(resource)("(%p,%s,%d,%d,%d,0x%08x)\n",
2664 hinst,debugstr_w(name),type,desiredx,desiredy,loadflags);
2665
2666 if (loadflags & LR_LOADFROMFILE) loadflags &= ~LR_SHARED;
2667 switch (type) {
2668 case IMAGE_BITMAP:
2669 return BITMAP_Load( hinst, name, desiredx, desiredy, loadflags );
2670
2671 case IMAGE_ICON:
2672 case IMAGE_CURSOR:
2673 depth = 1;
2674 if (!(loadflags & LR_MONOCHROME))
2675 {
2676 HDC screen_dc;
2677
2678 if ((screen_dc = get_screen_dc()))
2679 depth = GetDeviceCaps( screen_dc, BITSPIXEL );
2680 }
2681 return CURSORICON_Load(hinst, name, desiredx, desiredy, depth, (type == IMAGE_CURSOR), loadflags);
2682 }
2683 return 0;
2684 }
2685
2686 /******************************************************************************
2687 * CopyImage (USER32.@) Creates new image and copies attributes to it
2688 *
2689 * PARAMS
2690 * hnd [I] Handle to image to copy
2691 * type [I] Type of image to copy
2692 * desiredx [I] Desired width of new image
2693 * desiredy [I] Desired height of new image
2694 * flags [I] Copy flags
2695 *
2696 * RETURNS
2697 * Success: Handle to newly created image
2698 * Failure: NULL
2699 *
2700 * BUGS
2701 * Only Windows NT 4.0 supports the LR_COPYRETURNORG flag for bitmaps,
2702 * all other versions (95/2000/XP have been tested) ignore it.
2703 *
2704 * NOTES
2705 * If LR_CREATEDIBSECTION is absent, the copy will be monochrome for
2706 * a monochrome source bitmap or if LR_MONOCHROME is present, otherwise
2707 * the copy will have the same depth as the screen.
2708 * The content of the image will only be copied if the bit depth of the
2709 * original image is compatible with the bit depth of the screen, or
2710 * if the source is a DIB section.
2711 * The LR_MONOCHROME flag is ignored if LR_CREATEDIBSECTION is present.
2712 */
2713 HANDLE WINAPI CopyImage( HANDLE hnd, UINT type, INT desiredx,
2714 INT desiredy, UINT flags )
2715 {
2716 TRACE("hnd=%p, type=%u, desiredx=%d, desiredy=%d, flags=%x\n",
2717 hnd, type, desiredx, desiredy, flags);
2718
2719 switch (type)
2720 {
2721 case IMAGE_BITMAP:
2722 {
2723 HBITMAP res = NULL;
2724 DIBSECTION ds;
2725 int objSize;
2726 BITMAPINFO * bi;
2727
2728 objSize = GetObjectW( hnd, sizeof(ds), &ds );
2729 if (!objSize) return 0;
2730 if ((desiredx < 0) || (desiredy < 0)) return 0;
2731
2732 if (flags & LR_COPYFROMRESOURCE)
2733 {
2734 FIXME("The flag LR_COPYFROMRESOURCE is not implemented for bitmaps\n");
2735 }
2736
2737 if (desiredx == 0) desiredx = ds.dsBm.bmWidth;
2738 if (desiredy == 0) desiredy = ds.dsBm.bmHeight;
2739
2740 /* Allocate memory for a BITMAPINFOHEADER structure and a
2741 color table. The maximum number of colors in a color table
2742 is 256 which corresponds to a bitmap with depth 8.
2743 Bitmaps with higher depths don't have color tables. */
2744 bi = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(BITMAPINFOHEADER) + 256 * sizeof(RGBQUAD));
2745 if (!bi) return 0;
2746
2747 bi->bmiHeader.biSize = sizeof(bi->bmiHeader);
2748 bi->bmiHeader.biPlanes = ds.dsBm.bmPlanes;
2749 bi->bmiHeader.biBitCount = ds.dsBm.bmBitsPixel;
2750 bi->bmiHeader.biCompression = BI_RGB;
2751
2752 if (flags & LR_CREATEDIBSECTION)
2753 {
2754 /* Create a DIB section. LR_MONOCHROME is ignored */
2755 void * bits;
2756 HDC dc = CreateCompatibleDC(NULL);
2757
2758 if (objSize == sizeof(DIBSECTION))
2759 {
2760 /* The source bitmap is a DIB.
2761 Get its attributes to create an exact copy */
2762 memcpy(bi, &ds.dsBmih, sizeof(BITMAPINFOHEADER));
2763 }
2764
2765 bi->bmiHeader.biWidth = desiredx;
2766 bi->bmiHeader.biHeight = desiredy;
2767
2768 /* Get the color table or the color masks */
2769 GetDIBits(dc, hnd, 0, ds.dsBm.bmHeight, NULL, bi, DIB_RGB_COLORS);
2770
2771 res = CreateDIBSection(dc, bi, DIB_RGB_COLORS, &bits, NULL, 0);
2772 DeleteDC(dc);
2773 }
2774 else
2775 {
2776 /* Create a device-dependent bitmap */
2777
2778 BOOL monochrome = (flags & LR_MONOCHROME);
2779
2780 if (objSize == sizeof(DIBSECTION))
2781 {
2782 /* The source bitmap is a DIB section.
2783 Get its attributes */
2784 HDC dc = CreateCompatibleDC(NULL);
2785 bi->bmiHeader.biWidth = ds.dsBm.bmWidth;
2786 bi->bmiHeader.biHeight = ds.dsBm.bmHeight;
2787 GetDIBits(dc, hnd, 0, ds.dsBm.bmHeight, NULL, bi, DIB_RGB_COLORS);
2788 DeleteDC(dc);
2789
2790 if (!monochrome && ds.dsBm.bmBitsPixel == 1)
2791 {
2792 /* Look if the colors of the DIB are black and white */
2793
2794 monochrome =
2795 (bi->bmiColors[0].rgbRed == 0xff
2796 && bi->bmiColors[0].rgbGreen == 0xff
2797 && bi->bmiColors[0].rgbBlue == 0xff
2798 && bi->bmiColors[0].rgbReserved == 0
2799 && bi->bmiColors[1].rgbRed == 0
2800 && bi->bmiColors[1].rgbGreen == 0
2801 && bi->bmiColors[1].rgbBlue == 0
2802 && bi->bmiColors[1].rgbReserved == 0)
2803 ||
2804 (bi->bmiColors[0].rgbRed == 0
2805 && bi->bmiColors[0].rgbGreen == 0
2806 && bi->bmiColors[0].rgbBlue == 0
2807 && bi->bmiColors[0].rgbReserved == 0
2808 && bi->bmiColors[1].rgbRed == 0xff
2809 && bi->bmiColors[1].rgbGreen == 0xff
2810 && bi->bmiColors[1].rgbBlue == 0xff
2811 && bi->bmiColors[1].rgbReserved == 0);
2812 }
2813 }
2814 else if (!monochrome)
2815 {
2816 monochrome = ds.dsBm.bmBitsPixel == 1;
2817 }
2818
2819 if (monochrome)
2820 {
2821 res = CreateBitmap(desiredx, desiredy, 1, 1, NULL);
2822 }
2823 else
2824 {
2825 HDC screenDC = GetDC(NULL);
2826 res = CreateCompatibleBitmap(screenDC, desiredx, desiredy);
2827 ReleaseDC(NULL, screenDC);
2828 }
2829 }
2830
2831 if (res)
2832 {
2833 /* Only copy the bitmap if it's a DIB section or if it's
2834 compatible to the screen */
2835 BOOL copyContents;
2836
2837 if (objSize == sizeof(DIBSECTION))
2838 {
2839 copyContents = TRUE;
2840 }
2841 else
2842 {
2843 HDC screenDC = GetDC(NULL);
2844 int screen_depth = GetDeviceCaps(screenDC, BITSPIXEL);
2845 ReleaseDC(NULL, screenDC);
2846
2847 copyContents = (ds.dsBm.bmBitsPixel == 1 || ds.dsBm.bmBitsPixel == screen_depth);
2848 }
2849
2850 if (copyContents)
2851 {
2852 /* The source bitmap may already be selected in a device context,
2853 use GetDIBits/StretchDIBits and not StretchBlt */
2854
2855 HDC dc;
2856 void * bits;
2857
2858 dc = CreateCompatibleDC(NULL);
2859
2860 bi->bmiHeader.biWidth = ds.dsBm.bmWidth;
2861 bi->bmiHeader.biHeight = ds.dsBm.bmHeight;
2862 bi->bmiHeader.biSizeImage = 0;
2863 bi->bmiHeader.biClrUsed = 0;
2864 bi->bmiHeader.biClrImportant = 0;
2865
2866 /* Fill in biSizeImage */
2867 GetDIBits(dc, hnd, 0, ds.dsBm.bmHeight, NULL, bi, DIB_RGB_COLORS);
2868 bits = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, bi->bmiHeader.biSizeImage);
2869
2870 if (bits)
2871 {
2872 HBITMAP oldBmp;
2873
2874 /* Get the image bits of the source bitmap */
2875 GetDIBits(dc, hnd, 0, ds.dsBm.bmHeight, bits, bi, DIB_RGB_COLORS);
2876
2877 /* Copy it to the destination bitmap */
2878 oldBmp = SelectObject(dc, res);
2879 StretchDIBits(dc, 0, 0, desiredx, desiredy,
2880 0, 0, ds.dsBm.bmWidth, ds.dsBm.bmHeight,
2881 bits, bi, DIB_RGB_COLORS, SRCCOPY);
2882 SelectObject(dc, oldBmp);
2883
2884 HeapFree(GetProcessHeap(), 0, bits);
2885 }
2886
2887 DeleteDC(dc);
2888 }
2889
2890 if (flags & LR_COPYDELETEORG)
2891 {
2892 DeleteObject(hnd);
2893 }
2894 }
2895 HeapFree(GetProcessHeap(), 0, bi);
2896 return res;
2897 }
2898 case IMAGE_ICON:
2899 case IMAGE_CURSOR:
2900 {
2901 struct cursoricon_object *icon;
2902 HICON res = 0;
2903 int depth = (flags & LR_MONOCHROME) ? 1 : GetDeviceCaps( get_screen_dc(), BITSPIXEL );
2904
2905 if (flags & LR_DEFAULTSIZE)
2906 {
2907 if (!desiredx) desiredx = GetSystemMetrics( type == IMAGE_ICON ? SM_CXICON : SM_CXCURSOR );
2908 if (!desiredy) desiredy = GetSystemMetrics( type == IMAGE_ICON ? SM_CYICON : SM_CYCURSOR );
2909 }
2910
2911 if (!(icon = get_icon_ptr( hnd ))) return 0;
2912
2913 if (icon->rsrc && (flags & LR_COPYFROMRESOURCE))
2914 res = CURSORICON_Load( icon->module, icon->resname, desiredx, desiredy, depth,
2915 !icon->is_icon, flags );
2916 else
2917 res = CopyIcon( hnd ); /* FIXME: change size if necessary */
2918 release_user_handle_ptr( icon );
2919
2920 if (res && (flags & LR_COPYDELETEORG)) DeleteObject( hnd );
2921 return res;
2922 }
2923 }
2924 return 0;
2925 }
2926
2927
2928 /******************************************************************************
2929 * LoadBitmapW (USER32.@) Loads bitmap from the executable file
2930 *
2931 * RETURNS
2932 * Success: Handle to specified bitmap
2933 * Failure: NULL
2934 */
2935 HBITMAP WINAPI LoadBitmapW(
2936 HINSTANCE instance, /* [in] Handle to application instance */
2937 LPCWSTR name) /* [in] Address of bitmap resource name */
2938 {
2939 return LoadImageW( instance, name, IMAGE_BITMAP, 0, 0, 0 );
2940 }
2941
2942 /**********************************************************************
2943 * LoadBitmapA (USER32.@)
2944 *
2945 * See LoadBitmapW.
2946 */
2947 HBITMAP WINAPI LoadBitmapA( HINSTANCE instance, LPCSTR name )
2948 {
2949 return LoadImageA( instance, name, IMAGE_BITMAP, 0, 0, 0 );
2950 }
Windows API implementation