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msvcrt: Added _fseeki64_nolock implementation.
[wine.git] / dlls / user32 / cursoricon.c
blob3c31894975583661c5a87b827f18e2ef3330a3a3
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 #include "pshpack1.h"
52
53 typedef struct {
54 BYTE bWidth;
55 BYTE bHeight;
56 BYTE bColorCount;
57 BYTE bReserved;
58 WORD xHotspot;
59 WORD yHotspot;
60 DWORD dwDIBSize;
61 DWORD dwDIBOffset;
62 } CURSORICONFILEDIRENTRY;
63
64 typedef struct
65 {
66 WORD idReserved;
67 WORD idType;
68 WORD idCount;
69 CURSORICONFILEDIRENTRY idEntries[1];
70 } CURSORICONFILEDIR;
71
72 #include "poppack.h"
73
74 static HDC screen_dc;
75
76 static const WCHAR DISPLAYW[] = {'D','I','S','P','L','A','Y',0};
77
78 static struct list icon_cache = LIST_INIT( icon_cache );
79
80 /**********************************************************************
81 * User objects management
82 */
83
84 struct cursoricon_frame
85 {
86 UINT width; /* frame-specific width */
87 UINT height; /* frame-specific height */
88 UINT delay; /* frame-specific delay between this frame and the next (in jiffies) */
89 HBITMAP color; /* color bitmap */
90 HBITMAP alpha; /* pre-multiplied alpha bitmap for 32-bpp icons */
91 HBITMAP mask; /* mask bitmap (followed by color for 1-bpp icons) */
92 };
93
94 struct cursoricon_object
95 {
96 struct user_object obj; /* object header */
97 struct list entry; /* entry in shared icons list */
98 ULONG_PTR param; /* opaque param used by 16-bit code */
99 HMODULE module; /* module for icons loaded from resources */
100 LPWSTR resname; /* resource name for icons loaded from resources */
101 HRSRC rsrc; /* resource for shared icons */
102 BOOL is_icon; /* whether icon or cursor */
103 BOOL is_ani; /* whether this object is a static cursor or an animated cursor */
104 UINT delay; /* delay between this frame and the next (in jiffies) */
105 POINT hotspot;
106 };
107
108 struct static_cursoricon_object
109 {
110 struct cursoricon_object shared;
111 struct cursoricon_frame frame; /* frame-specific icon data */
112 };
113
114 struct animated_cursoricon_object
115 {
116 struct cursoricon_object shared;
117 UINT num_frames; /* number of frames in the icon/cursor */
118 UINT num_steps; /* number of sequence steps in the icon/cursor */
119 HICON frames[1]; /* list of animated cursor frames */
120 };
121
122 static HICON alloc_icon_handle( BOOL is_ani, UINT num_steps )
123 {
124 struct cursoricon_object *obj;
125 int icon_size;
126
127 if (is_ani)
128 icon_size = FIELD_OFFSET( struct animated_cursoricon_object, frames[num_steps] );
129 else
130 icon_size = sizeof( struct static_cursoricon_object );
131 obj = HeapAlloc( GetProcessHeap(), HEAP_ZERO_MEMORY, icon_size );
132
133 obj->delay = 0;
134 obj->is_ani = is_ani;
135 if (is_ani)
136 {
137 struct animated_cursoricon_object *ani_icon_data = (struct animated_cursoricon_object *) obj;
138
139 ani_icon_data->num_steps = num_steps;
140 ani_icon_data->num_frames = num_steps; /* changed later for some animated cursors */
141 }
142 return alloc_user_handle( &obj->obj, USER_ICON );
143 }
144
145 static struct cursoricon_object *get_icon_ptr( HICON handle )
146 {
147 struct cursoricon_object *obj = get_user_handle_ptr( handle, USER_ICON );
148 if (obj == OBJ_OTHER_PROCESS)
149 {
150 WARN( "icon handle %p from other process\n", handle );
151 obj = NULL;
152 }
153 return obj;
154 }
155
156 static void release_icon_ptr( HICON handle, struct cursoricon_object *ptr )
157 {
158 release_user_handle_ptr( ptr );
159 }
160
161 static struct cursoricon_frame *get_icon_frame( struct cursoricon_object *obj, int istep )
162 {
163 struct static_cursoricon_object *req_frame;
164
165 if (obj->is_ani)
166 {
167 struct animated_cursoricon_object *ani_icon_data;
168 struct cursoricon_object *frameobj;
169
170 ani_icon_data = (struct animated_cursoricon_object *) obj;
171 if (!(frameobj = get_icon_ptr( ani_icon_data->frames[istep] )))
172 return 0;
173 req_frame = (struct static_cursoricon_object *) frameobj;
174 }
175 else
176 req_frame = (struct static_cursoricon_object *) obj;
177
178 return &req_frame->frame;
179 }
180
181 static void release_icon_frame( struct cursoricon_object *obj, int istep, struct cursoricon_frame *frame )
182 {
183 if (obj->is_ani)
184 {
185 struct animated_cursoricon_object *ani_icon_data;
186 struct cursoricon_object *frameobj;
187
188 ani_icon_data = (struct animated_cursoricon_object *) obj;
189 frameobj = (struct cursoricon_object *) (((char *)frame) - FIELD_OFFSET(struct static_cursoricon_object, frame));
190 release_icon_ptr( ani_icon_data->frames[istep], frameobj );
191 }
192 }
193
194 static UINT get_icon_steps( struct cursoricon_object *obj )
195 {
196 if (obj->is_ani)
197 {
198 struct animated_cursoricon_object *ani_icon_data;
199
200 ani_icon_data = (struct animated_cursoricon_object *) obj;
201 return ani_icon_data->num_steps;
202 }
203 return 1;
204 }
205
206 static BOOL free_icon_handle( HICON handle )
207 {
208 struct cursoricon_object *obj = free_user_handle( handle, USER_ICON );
209
210 if (obj == OBJ_OTHER_PROCESS) WARN( "icon handle %p from other process\n", handle );
211 else if (obj)
212 {
213 ULONG_PTR param = obj->param;
214 UINT i;
215
216 assert( !obj->rsrc ); /* shared icons can't be freed */
217
218 if (!obj->is_ani)
219 {
220 struct cursoricon_frame *frame = get_icon_frame( obj, 0 );
221
222 if (frame->alpha) DeleteObject( frame->alpha );
223 if (frame->color) DeleteObject( frame->color );
224 DeleteObject( frame->mask );
225 release_icon_frame( obj, 0, frame );
226 }
227 else
228 {
229 struct animated_cursoricon_object *ani_icon_data = (struct animated_cursoricon_object *) obj;
230
231 for (i=0; i<ani_icon_data->num_steps; i++)
232 {
233 HICON hFrame = ani_icon_data->frames[i];
234
235 if (hFrame)
236 {
237 UINT j;
238
239 free_icon_handle( ani_icon_data->frames[i] );
240 for (j=0; j<ani_icon_data->num_steps; j++)
241 {
242 if (ani_icon_data->frames[j] == hFrame)
243 ani_icon_data->frames[j] = 0;
244 }
245 }
246 }
247 }
248 if (!IS_INTRESOURCE( obj->resname )) HeapFree( GetProcessHeap(), 0, obj->resname );
249 HeapFree( GetProcessHeap(), 0, obj );
250 if (wow_handlers.free_icon_param && param) wow_handlers.free_icon_param( param );
251 USER_Driver->pDestroyCursorIcon( handle );
252 return TRUE;
253 }
254 return FALSE;
255 }
256
257 ULONG_PTR get_icon_param( HICON handle )
258 {
259 ULONG_PTR ret = 0;
260 struct cursoricon_object *obj = get_user_handle_ptr( handle, USER_ICON );
261
262 if (obj == OBJ_OTHER_PROCESS) WARN( "icon handle %p from other process\n", handle );
263 else if (obj)
264 {
265 ret = obj->param;
266 release_user_handle_ptr( obj );
267 }
268 return ret;
269 }
270
271 ULONG_PTR set_icon_param( HICON handle, ULONG_PTR param )
272 {
273 ULONG_PTR ret = 0;
274 struct cursoricon_object *obj = get_user_handle_ptr( handle, USER_ICON );
275
276 if (obj == OBJ_OTHER_PROCESS) WARN( "icon handle %p from other process\n", handle );
277 else if (obj)
278 {
279 ret = obj->param;
280 obj->param = param;
281 release_user_handle_ptr( obj );
282 }
283 return ret;
284 }
285
286
287 /***********************************************************************
288 * map_fileW
289 *
290 * Helper function to map a file to memory:
291 * name - file name
292 * [RETURN] ptr - pointer to mapped file
293 * [RETURN] filesize - pointer size of file to be stored if not NULL
294 */
295 static const void *map_fileW( LPCWSTR name, LPDWORD filesize )
296 {
297 HANDLE hFile, hMapping;
298 LPVOID ptr = NULL;
299
300 hFile = CreateFileW( name, GENERIC_READ, FILE_SHARE_READ, NULL,
301 OPEN_EXISTING, FILE_FLAG_RANDOM_ACCESS, 0 );
302 if (hFile != INVALID_HANDLE_VALUE)
303 {
304 hMapping = CreateFileMappingW( hFile, NULL, PAGE_READONLY, 0, 0, NULL );
305 if (hMapping)
306 {
307 ptr = MapViewOfFile( hMapping, FILE_MAP_READ, 0, 0, 0 );
308 CloseHandle( hMapping );
309 if (filesize)
310 *filesize = GetFileSize( hFile, NULL );
311 }
312 CloseHandle( hFile );
313 }
314 return ptr;
315 }
316
317
318 /***********************************************************************
319 * get_dib_image_size
320 *
321 * Return the size of a DIB bitmap in bytes.
322 */
323 static int get_dib_image_size( int width, int height, int depth )
324 {
325 return (((width * depth + 31) / 8) & ~3) * abs( height );
326 }
327
328
329 /***********************************************************************
330 * bitmap_info_size
331 *
332 * Return the size of the bitmap info structure including color table.
333 */
334 static int bitmap_info_size( const BITMAPINFO * info, WORD coloruse )
335 {
336 unsigned int colors, size, masks = 0;
337
338 if (info->bmiHeader.biSize == sizeof(BITMAPCOREHEADER))
339 {
340 const BITMAPCOREHEADER *core = (const BITMAPCOREHEADER *)info;
341 colors = (core->bcBitCount <= 8) ? 1 << core->bcBitCount : 0;
342 return sizeof(BITMAPCOREHEADER) + colors *
343 ((coloruse == DIB_RGB_COLORS) ? sizeof(RGBTRIPLE) : sizeof(WORD));
344 }
345 else /* assume BITMAPINFOHEADER */
346 {
347 colors = info->bmiHeader.biClrUsed;
348 if (colors > 256) /* buffer overflow otherwise */
349 colors = 256;
350 if (!colors && (info->bmiHeader.biBitCount <= 8))
351 colors = 1 << info->bmiHeader.biBitCount;
352 if (info->bmiHeader.biCompression == BI_BITFIELDS) masks = 3;
353 size = max( info->bmiHeader.biSize, sizeof(BITMAPINFOHEADER) + masks * sizeof(DWORD) );
354 return size + colors * ((coloruse == DIB_RGB_COLORS) ? sizeof(RGBQUAD) : sizeof(WORD));
355 }
356 }
357
358
359 /***********************************************************************
360 * copy_bitmap
361 *
362 * Helper function to duplicate a bitmap.
363 */
364 static HBITMAP copy_bitmap( HBITMAP bitmap )
365 {
366 HDC src, dst = 0;
367 HBITMAP new_bitmap = 0;
368 BITMAP bmp;
369
370 if (!bitmap) return 0;
371 if (!GetObjectW( bitmap, sizeof(bmp), &bmp )) return 0;
372
373 if ((src = CreateCompatibleDC( 0 )) && (dst = CreateCompatibleDC( 0 )))
374 {
375 SelectObject( src, bitmap );
376 if ((new_bitmap = CreateCompatibleBitmap( src, bmp.bmWidth, bmp.bmHeight )))
377 {
378 SelectObject( dst, new_bitmap );
379 BitBlt( dst, 0, 0, bmp.bmWidth, bmp.bmHeight, src, 0, 0, SRCCOPY );
380 }
381 }
382 DeleteDC( dst );
383 DeleteDC( src );
384 return new_bitmap;
385 }
386
387
388 /***********************************************************************
389 * is_dib_monochrome
390 *
391 * Returns whether a DIB can be converted to a monochrome DDB.
392 *
393 * A DIB can be converted if its color table contains only black and
394 * white. Black must be the first color in the color table.
395 *
396 * Note : If the first color in the color table is white followed by
397 * black, we can't convert it to a monochrome DDB with
398 * SetDIBits, because black and white would be inverted.
399 */
400 static BOOL is_dib_monochrome( const BITMAPINFO* info )
401 {
402 if (info->bmiHeader.biBitCount != 1) return FALSE;
403
404 if (info->bmiHeader.biSize == sizeof(BITMAPCOREHEADER))
405 {
406 const RGBTRIPLE *rgb = ((const BITMAPCOREINFO*)info)->bmciColors;
407
408 /* Check if the first color is black */
409 if ((rgb->rgbtRed == 0) && (rgb->rgbtGreen == 0) && (rgb->rgbtBlue == 0))
410 {
411 rgb++;
412
413 /* Check if the second color is white */
414 return ((rgb->rgbtRed == 0xff) && (rgb->rgbtGreen == 0xff)
415 && (rgb->rgbtBlue == 0xff));
416 }
417 else return FALSE;
418 }
419 else /* assume BITMAPINFOHEADER */
420 {
421 const RGBQUAD *rgb = info->bmiColors;
422
423 /* Check if the first color is black */
424 if ((rgb->rgbRed == 0) && (rgb->rgbGreen == 0) &&
425 (rgb->rgbBlue == 0) && (rgb->rgbReserved == 0))
426 {
427 rgb++;
428
429 /* Check if the second color is white */
430 return ((rgb->rgbRed == 0xff) && (rgb->rgbGreen == 0xff)
431 && (rgb->rgbBlue == 0xff) && (rgb->rgbReserved == 0));
432 }
433 else return FALSE;
434 }
435 }
436
437 /***********************************************************************
438 * DIB_GetBitmapInfo
439 *
440 * Get the info from a bitmap header.
441 * Return 1 for INFOHEADER, 0 for COREHEADER, -1 in case of failure.
442 */
443 static int DIB_GetBitmapInfo( const BITMAPINFOHEADER *header, LONG *width,
444 LONG *height, WORD *bpp, DWORD *compr )
445 {
446 if (header->biSize == sizeof(BITMAPCOREHEADER))
447 {
448 const BITMAPCOREHEADER *core = (const BITMAPCOREHEADER *)header;
449 *width = core->bcWidth;
450 *height = core->bcHeight;
451 *bpp = core->bcBitCount;
452 *compr = 0;
453 return 0;
454 }
455 else if (header->biSize == sizeof(BITMAPINFOHEADER) ||
456 header->biSize == sizeof(BITMAPV4HEADER) ||
457 header->biSize == sizeof(BITMAPV5HEADER))
458 {
459 *width = header->biWidth;
460 *height = header->biHeight;
461 *bpp = header->biBitCount;
462 *compr = header->biCompression;
463 return 1;
464 }
465 WARN("unknown/wrong size (%u) for header\n", header->biSize);
466 return -1;
467 }
468
469 /**********************************************************************
470 * get_icon_size
471 */
472 BOOL get_icon_size( HICON handle, SIZE *size )
473 {
474 struct cursoricon_object *info;
475 struct cursoricon_frame *frame;
476
477 if (!(info = get_icon_ptr( handle ))) return FALSE;
478 frame = get_icon_frame( info, 0 );
479 size->cx = frame->width;
480 size->cy = frame->height;
481 release_icon_frame( info, 0, frame);
482 release_icon_ptr( handle, info );
483 return TRUE;
484 }
485
486 /*
487 * The following macro functions account for the irregularities of
488 * accessing cursor and icon resources in files and resource entries.
489 */
490 typedef BOOL (*fnGetCIEntry)( LPCVOID dir, DWORD size, int n,
491 int *width, int *height, int *bits );
492
493 /**********************************************************************
494 * CURSORICON_FindBestIcon
495 *
496 * Find the icon closest to the requested size and bit depth.
497 */
498 static int CURSORICON_FindBestIcon( LPCVOID dir, DWORD size, fnGetCIEntry get_entry,
499 int width, int height, int depth, UINT loadflags )
500 {
501 int i, cx, cy, bits, bestEntry = -1;
502 UINT iTotalDiff, iXDiff=0, iYDiff=0, iColorDiff;
503 UINT iTempXDiff, iTempYDiff, iTempColorDiff;
504
505 /* Find Best Fit */
506 iTotalDiff = 0xFFFFFFFF;
507 iColorDiff = 0xFFFFFFFF;
508
509 if (loadflags & LR_DEFAULTSIZE)
510 {
511 if (!width) width = GetSystemMetrics( SM_CXICON );
512 if (!height) height = GetSystemMetrics( SM_CYICON );
513 }
514 else if (!width && !height)
515 {
516 /* use the size of the first entry */
517 if (!get_entry( dir, size, 0, &width, &height, &bits )) return -1;
518 iTotalDiff = 0;
519 }
520
521 for ( i = 0; iTotalDiff && get_entry( dir, size, i, &cx, &cy, &bits ); i++ )
522 {
523 iTempXDiff = abs(width - cx);
524 iTempYDiff = abs(height - cy);
525
526 if(iTotalDiff > (iTempXDiff + iTempYDiff))
527 {
528 iXDiff = iTempXDiff;
529 iYDiff = iTempYDiff;
530 iTotalDiff = iXDiff + iYDiff;
531 }
532 }
533
534 /* Find Best Colors for Best Fit */
535 for ( i = 0; get_entry( dir, size, i, &cx, &cy, &bits ); i++ )
536 {
537 if(abs(width - cx) == iXDiff && abs(height - cy) == iYDiff)
538 {
539 iTempColorDiff = abs(depth - bits);
540 if(iColorDiff > iTempColorDiff)
541 {
542 bestEntry = i;
543 iColorDiff = iTempColorDiff;
544 }
545 }
546 }
547
548 return bestEntry;
549 }
550
551 static BOOL CURSORICON_GetResIconEntry( LPCVOID dir, DWORD size, int n,
552 int *width, int *height, int *bits )
553 {
554 const CURSORICONDIR *resdir = dir;
555 const ICONRESDIR *icon;
556
557 if ( resdir->idCount <= n )
558 return FALSE;
559 if ((const char *)&resdir->idEntries[n + 1] - (const char *)dir > size)
560 return FALSE;
561 icon = &resdir->idEntries[n].ResInfo.icon;
562 *width = icon->bWidth;
563 *height = icon->bHeight;
564 *bits = resdir->idEntries[n].wBitCount;
565 return TRUE;
566 }
567
568 /**********************************************************************
569 * CURSORICON_FindBestCursor
570 *
571 * Find the cursor closest to the requested size.
572 *
573 * FIXME: parameter 'color' ignored.
574 */
575 static int CURSORICON_FindBestCursor( LPCVOID dir, DWORD size, fnGetCIEntry get_entry,
576 int width, int height, int depth, UINT loadflags )
577 {
578 int i, maxwidth, maxheight, cx, cy, bits, bestEntry = -1;
579
580 if (loadflags & LR_DEFAULTSIZE)
581 {
582 if (!width) width = GetSystemMetrics( SM_CXCURSOR );
583 if (!height) height = GetSystemMetrics( SM_CYCURSOR );
584 }
585 else if (!width && !height)
586 {
587 /* use the first entry */
588 if (!get_entry( dir, size, 0, &width, &height, &bits )) return -1;
589 return 0;
590 }
591
592 /* Double height to account for AND and XOR masks */
593
594 height *= 2;
595
596 /* First find the largest one smaller than or equal to the requested size*/
597
598 maxwidth = maxheight = 0;
599 for ( i = 0; get_entry( dir, size, i, &cx, &cy, &bits ); i++ )
600 {
601 if ((cx <= width) && (cy <= height) &&
602 (cx > maxwidth) && (cy > maxheight))
603 {
604 bestEntry = i;
605 maxwidth = cx;
606 maxheight = cy;
607 }
608 }
609 if (bestEntry != -1) return bestEntry;
610
611 /* Now find the smallest one larger than the requested size */
612
613 maxwidth = maxheight = 255;
614 for ( i = 0; get_entry( dir, size, i, &cx, &cy, &bits ); i++ )
615 {
616 if (((cx < maxwidth) && (cy < maxheight)) || (bestEntry == -1))
617 {
618 bestEntry = i;
619 maxwidth = cx;
620 maxheight = cy;
621 }
622 }
623
624 return bestEntry;
625 }
626
627 static BOOL CURSORICON_GetResCursorEntry( LPCVOID dir, DWORD size, int n,
628 int *width, int *height, int *bits )
629 {
630 const CURSORICONDIR *resdir = dir;
631 const CURSORDIR *cursor;
632
633 if ( resdir->idCount <= n )
634 return FALSE;
635 if ((const char *)&resdir->idEntries[n + 1] - (const char *)dir > size)
636 return FALSE;
637 cursor = &resdir->idEntries[n].ResInfo.cursor;
638 *width = cursor->wWidth;
639 *height = cursor->wHeight;
640 *bits = resdir->idEntries[n].wBitCount;
641 return TRUE;
642 }
643
644 static const CURSORICONDIRENTRY *CURSORICON_FindBestIconRes( const CURSORICONDIR * dir, DWORD size,
645 int width, int height, int depth,
646 UINT loadflags )
647 {
648 int n;
649
650 n = CURSORICON_FindBestIcon( dir, size, CURSORICON_GetResIconEntry,
651 width, height, depth, loadflags );
652 if ( n < 0 )
653 return NULL;
654 return &dir->idEntries[n];
655 }
656
657 static const CURSORICONDIRENTRY *CURSORICON_FindBestCursorRes( const CURSORICONDIR *dir, DWORD size,
658 int width, int height, int depth,
659 UINT loadflags )
660 {
661 int n = CURSORICON_FindBestCursor( dir, size, CURSORICON_GetResCursorEntry,
662 width, height, depth, loadflags );
663 if ( n < 0 )
664 return NULL;
665 return &dir->idEntries[n];
666 }
667
668 static BOOL CURSORICON_GetFileEntry( LPCVOID dir, DWORD size, int n,
669 int *width, int *height, int *bits )
670 {
671 const CURSORICONFILEDIR *filedir = dir;
672 const CURSORICONFILEDIRENTRY *entry;
673 const BITMAPINFOHEADER *info;
674
675 if ( filedir->idCount <= n )
676 return FALSE;
677 if ((const char *)&filedir->idEntries[n + 1] - (const char *)dir > size)
678 return FALSE;
679 entry = &filedir->idEntries[n];
680 info = (const BITMAPINFOHEADER *)((const char *)dir + entry->dwDIBOffset);
681 if ((const char *)(info + 1) - (const char *)dir > size) return FALSE;
682 *width = entry->bWidth;
683 *height = entry->bHeight;
684 *bits = info->biBitCount;
685 return TRUE;
686 }
687
688 static const CURSORICONFILEDIRENTRY *CURSORICON_FindBestCursorFile( const CURSORICONFILEDIR *dir, DWORD size,
689 int width, int height, int depth,
690 UINT loadflags )
691 {
692 int n = CURSORICON_FindBestCursor( dir, size, CURSORICON_GetFileEntry,
693 width, height, depth, loadflags );
694 if ( n < 0 )
695 return NULL;
696 return &dir->idEntries[n];
697 }
698
699 static const CURSORICONFILEDIRENTRY *CURSORICON_FindBestIconFile( const CURSORICONFILEDIR *dir, DWORD size,
700 int width, int height, int depth,
701 UINT loadflags )
702 {
703 int n = CURSORICON_FindBestIcon( dir, size, CURSORICON_GetFileEntry,
704 width, height, depth, loadflags );
705 if ( n < 0 )
706 return NULL;
707 return &dir->idEntries[n];
708 }
709
710 /***********************************************************************
711 * bmi_has_alpha
712 */
713 static BOOL bmi_has_alpha( const BITMAPINFO *info, const void *bits )
714 {
715 int i;
716 BOOL has_alpha = FALSE;
717 const unsigned char *ptr = bits;
718
719 if (info->bmiHeader.biBitCount != 32) return FALSE;
720 for (i = 0; i < info->bmiHeader.biWidth * abs(info->bmiHeader.biHeight); i++, ptr += 4)
721 if ((has_alpha = (ptr[3] != 0))) break;
722 return has_alpha;
723 }
724
725 /***********************************************************************
726 * create_alpha_bitmap
727 *
728 * Create the alpha bitmap for a 32-bpp icon that has an alpha channel.
729 */
730 static HBITMAP create_alpha_bitmap( HBITMAP color, HBITMAP mask,
731 const BITMAPINFO *src_info, const void *color_bits )
732 {
733 HBITMAP alpha = 0;
734 BITMAPINFO *info = NULL;
735 BITMAP bm;
736 HDC hdc;
737 void *bits;
738 unsigned char *ptr;
739 int i;
740
741 if (!GetObjectW( color, sizeof(bm), &bm )) return 0;
742 if (bm.bmBitsPixel != 32) return 0;
743
744 if (!(hdc = CreateCompatibleDC( 0 ))) return 0;
745 if (!(info = HeapAlloc( GetProcessHeap(), 0, FIELD_OFFSET( BITMAPINFO, bmiColors[256] )))) goto done;
746 info->bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
747 info->bmiHeader.biWidth = bm.bmWidth;
748 info->bmiHeader.biHeight = -bm.bmHeight;
749 info->bmiHeader.biPlanes = 1;
750 info->bmiHeader.biBitCount = 32;
751 info->bmiHeader.biCompression = BI_RGB;
752 info->bmiHeader.biSizeImage = bm.bmWidth * bm.bmHeight * 4;
753 info->bmiHeader.biXPelsPerMeter = 0;
754 info->bmiHeader.biYPelsPerMeter = 0;
755 info->bmiHeader.biClrUsed = 0;
756 info->bmiHeader.biClrImportant = 0;
757 if (!(alpha = CreateDIBSection( hdc, info, DIB_RGB_COLORS, &bits, NULL, 0 ))) goto done;
758
759 if (src_info)
760 {
761 SelectObject( hdc, alpha );
762 StretchDIBits( hdc, 0, 0, bm.bmWidth, bm.bmHeight,
763 0, 0, src_info->bmiHeader.biWidth, src_info->bmiHeader.biHeight,
764 color_bits, src_info, DIB_RGB_COLORS, SRCCOPY );
765
766 }
767 else
768 {
769 GetDIBits( hdc, color, 0, bm.bmHeight, bits, info, DIB_RGB_COLORS );
770 if (!bmi_has_alpha( info, bits ))
771 {
772 DeleteObject( alpha );
773 alpha = 0;
774 goto done;
775 }
776 }
777
778 /* pre-multiply by alpha */
779 for (i = 0, ptr = bits; i < bm.bmWidth * bm.bmHeight; i++, ptr += 4)
780 {
781 unsigned int alpha = ptr[3];
782 ptr[0] = ptr[0] * alpha / 255;
783 ptr[1] = ptr[1] * alpha / 255;
784 ptr[2] = ptr[2] * alpha / 255;
785 }
786
787 done:
788 DeleteDC( hdc );
789 HeapFree( GetProcessHeap(), 0, info );
790 return alpha;
791 }
792
793
794 /***********************************************************************
795 * create_icon_from_bmi
796 *
797 * Create an icon from its BITMAPINFO.
798 */
799 static HICON create_icon_from_bmi( const BITMAPINFO *bmi, DWORD maxsize, HMODULE module, LPCWSTR resname,
800 HRSRC rsrc, POINT hotspot, BOOL bIcon, INT width, INT height,
801 UINT cFlag )
802 {
803 DWORD size, color_size, mask_size;
804 HBITMAP color = 0, mask = 0, alpha = 0;
805 const void *color_bits, *mask_bits;
806 BITMAPINFO *bmi_copy;
807 BOOL ret = FALSE;
808 BOOL do_stretch;
809 HICON hObj = 0;
810 HDC hdc = 0;
811
812 /* Check bitmap header */
813
814 if (maxsize < sizeof(BITMAPCOREHEADER))
815 {
816 WARN( "invalid size %u\n", maxsize );
817 return 0;
818 }
819 if (maxsize < bmi->bmiHeader.biSize)
820 {
821 WARN( "invalid header size %u\n", bmi->bmiHeader.biSize );
822 return 0;
823 }
824 if ( (bmi->bmiHeader.biSize != sizeof(BITMAPCOREHEADER)) &&
825 (bmi->bmiHeader.biSize != sizeof(BITMAPINFOHEADER) ||
826 (bmi->bmiHeader.biCompression != BI_RGB &&
827 bmi->bmiHeader.biCompression != BI_BITFIELDS)) )
828 {
829 WARN( "invalid bitmap header %u\n", bmi->bmiHeader.biSize );
830 return 0;
831 }
832
833 size = bitmap_info_size( bmi, DIB_RGB_COLORS );
834 color_size = get_dib_image_size( bmi->bmiHeader.biWidth, bmi->bmiHeader.biHeight / 2,
835 bmi->bmiHeader.biBitCount );
836 mask_size = get_dib_image_size( bmi->bmiHeader.biWidth, bmi->bmiHeader.biHeight / 2, 1 );
837 if (size > maxsize || color_size > maxsize - size)
838 {
839 WARN( "truncated file %u < %u+%u+%u\n", maxsize, size, color_size, mask_size );
840 return 0;
841 }
842 if (mask_size > maxsize - size - color_size) mask_size = 0; /* no mask */
843
844 if (cFlag & LR_DEFAULTSIZE)
845 {
846 if (!width) width = GetSystemMetrics( bIcon ? SM_CXICON : SM_CXCURSOR );
847 if (!height) height = GetSystemMetrics( bIcon ? SM_CYICON : SM_CYCURSOR );
848 }
849 else
850 {
851 if (!width) width = bmi->bmiHeader.biWidth;
852 if (!height) height = bmi->bmiHeader.biHeight/2;
853 }
854 do_stretch = (bmi->bmiHeader.biHeight/2 != height) ||
855 (bmi->bmiHeader.biWidth != width);
856
857 /* Scale the hotspot */
858 if (bIcon)
859 {
860 hotspot.x = width / 2;
861 hotspot.y = height / 2;
862 }
863 else if (do_stretch)
864 {
865 hotspot.x = (hotspot.x * width) / bmi->bmiHeader.biWidth;
866 hotspot.y = (hotspot.y * height) / (bmi->bmiHeader.biHeight / 2);
867 }
868
869 if (!screen_dc) screen_dc = CreateDCW( DISPLAYW, NULL, NULL, NULL );
870 if (!screen_dc) return 0;
871
872 if (!(bmi_copy = HeapAlloc( GetProcessHeap(), 0, max( size, FIELD_OFFSET( BITMAPINFO, bmiColors[2] )))))
873 return 0;
874 if (!(hdc = CreateCompatibleDC( 0 ))) goto done;
875
876 memcpy( bmi_copy, bmi, size );
877 bmi_copy->bmiHeader.biHeight /= 2;
878
879 color_bits = (const char*)bmi + size;
880 mask_bits = (const char*)color_bits + color_size;
881
882 alpha = 0;
883 if (is_dib_monochrome( bmi ))
884 {
885 if (!(mask = CreateBitmap( width, height * 2, 1, 1, NULL ))) goto done;
886 color = 0;
887
888 /* copy color data into second half of mask bitmap */
889 SelectObject( hdc, mask );
890 StretchDIBits( hdc, 0, height, width, height,
891 0, 0, bmi_copy->bmiHeader.biWidth, bmi_copy->bmiHeader.biHeight,
892 color_bits, bmi_copy, DIB_RGB_COLORS, SRCCOPY );
893 }
894 else
895 {
896 if (!(mask = CreateBitmap( width, height, 1, 1, NULL ))) goto done;
897 if (!(color = CreateBitmap( width, height, GetDeviceCaps( screen_dc, PLANES ),
898 GetDeviceCaps( screen_dc, BITSPIXEL ), NULL )))
899 {
900 DeleteObject( mask );
901 goto done;
902 }
903 SelectObject( hdc, color );
904 StretchDIBits( hdc, 0, 0, width, height,
905 0, 0, bmi_copy->bmiHeader.biWidth, bmi_copy->bmiHeader.biHeight,
906 color_bits, bmi_copy, DIB_RGB_COLORS, SRCCOPY );
907
908 if (bmi_has_alpha( bmi_copy, color_bits ))
909 alpha = create_alpha_bitmap( color, mask, bmi_copy, color_bits );
910
911 /* convert info to monochrome to copy the mask */
912 bmi_copy->bmiHeader.biBitCount = 1;
913 if (bmi_copy->bmiHeader.biSize != sizeof(BITMAPCOREHEADER))
914 {
915 RGBQUAD *rgb = bmi_copy->bmiColors;
916
917 bmi_copy->bmiHeader.biClrUsed = bmi_copy->bmiHeader.biClrImportant = 2;
918 rgb[0].rgbBlue = rgb[0].rgbGreen = rgb[0].rgbRed = 0x00;
919 rgb[1].rgbBlue = rgb[1].rgbGreen = rgb[1].rgbRed = 0xff;
920 rgb[0].rgbReserved = rgb[1].rgbReserved = 0;
921 }
922 else
923 {
924 RGBTRIPLE *rgb = (RGBTRIPLE *)(((BITMAPCOREHEADER *)bmi_copy) + 1);
925
926 rgb[0].rgbtBlue = rgb[0].rgbtGreen = rgb[0].rgbtRed = 0x00;
927 rgb[1].rgbtBlue = rgb[1].rgbtGreen = rgb[1].rgbtRed = 0xff;
928 }
929 }
930
931 if (mask_size)
932 {
933 SelectObject( hdc, mask );
934 StretchDIBits( hdc, 0, 0, width, height,
935 0, 0, bmi_copy->bmiHeader.biWidth, bmi_copy->bmiHeader.biHeight,
936 mask_bits, bmi_copy, DIB_RGB_COLORS, SRCCOPY );
937 }
938 ret = TRUE;
939
940 done:
941 DeleteDC( hdc );
942 HeapFree( GetProcessHeap(), 0, bmi_copy );
943
944 if (ret)
945 hObj = alloc_icon_handle( FALSE, 1 );
946 if (hObj)
947 {
948 struct cursoricon_object *info = get_icon_ptr( hObj );
949 struct cursoricon_frame *frame;
950
951 info->is_icon = bIcon;
952 info->module = module;
953 info->hotspot = hotspot;
954 frame = get_icon_frame( info, 0 );
955 frame->delay = ~0;
956 frame->width = width;
957 frame->height = height;
958 frame->color = color;
959 frame->mask = mask;
960 frame->alpha = alpha;
961 release_icon_frame( info, 0, frame );
962 if (!IS_INTRESOURCE(resname))
963 {
964 info->resname = HeapAlloc( GetProcessHeap(), 0, (strlenW(resname) + 1) * sizeof(WCHAR) );
965 if (info->resname) strcpyW( info->resname, resname );
966 }
967 else info->resname = MAKEINTRESOURCEW( LOWORD(resname) );
968
969 if (module && (cFlag & LR_SHARED))
970 {
971 info->rsrc = rsrc;
972 list_add_head( &icon_cache, &info->entry );
973 }
974 release_icon_ptr( hObj, info );
975 }
976 else
977 {
978 DeleteObject( color );
979 DeleteObject( alpha );
980 DeleteObject( mask );
981 }
982 return hObj;
983 }
984
985
986 /**********************************************************************
987 * .ANI cursor support
988 */
989 #define RIFF_FOURCC( c0, c1, c2, c3 ) \
990 ( (DWORD)(BYTE)(c0) | ( (DWORD)(BYTE)(c1) << 8 ) | \
991 ( (DWORD)(BYTE)(c2) << 16 ) | ( (DWORD)(BYTE)(c3) << 24 ) )
992
993 #define ANI_RIFF_ID RIFF_FOURCC('R', 'I', 'F', 'F')
994 #define ANI_LIST_ID RIFF_FOURCC('L', 'I', 'S', 'T')
995 #define ANI_ACON_ID RIFF_FOURCC('A', 'C', 'O', 'N')
996 #define ANI_anih_ID RIFF_FOURCC('a', 'n', 'i', 'h')
997 #define ANI_seq__ID RIFF_FOURCC('s', 'e', 'q', ' ')
998 #define ANI_fram_ID RIFF_FOURCC('f', 'r', 'a', 'm')
999 #define ANI_rate_ID RIFF_FOURCC('r', 'a', 't', 'e')
1000
1001 #define ANI_FLAG_ICON 0x1
1002 #define ANI_FLAG_SEQUENCE 0x2
1003
1004 typedef struct {
1005 DWORD header_size;
1006 DWORD num_frames;
1007 DWORD num_steps;
1008 DWORD width;
1009 DWORD height;
1010 DWORD bpp;
1011 DWORD num_planes;
1012 DWORD display_rate;
1013 DWORD flags;
1014 } ani_header;
1015
1016 typedef struct {
1017 DWORD data_size;
1018 const unsigned char *data;
1019 } riff_chunk_t;
1020
1021 static void dump_ani_header( const ani_header *header )
1022 {
1023 TRACE(" header size: %d\n", header->header_size);
1024 TRACE(" frames: %d\n", header->num_frames);
1025 TRACE(" steps: %d\n", header->num_steps);
1026 TRACE(" width: %d\n", header->width);
1027 TRACE(" height: %d\n", header->height);
1028 TRACE(" bpp: %d\n", header->bpp);
1029 TRACE(" planes: %d\n", header->num_planes);
1030 TRACE(" display rate: %d\n", header->display_rate);
1031 TRACE(" flags: 0x%08x\n", header->flags);
1032 }
1033
1034
1035 /*
1036 * RIFF:
1037 * DWORD "RIFF"
1038 * DWORD size
1039 * DWORD riff_id
1040 * BYTE[] data
1041 *
1042 * LIST:
1043 * DWORD "LIST"
1044 * DWORD size
1045 * DWORD list_id
1046 * BYTE[] data
1047 *
1048 * CHUNK:
1049 * DWORD chunk_id
1050 * DWORD size
1051 * BYTE[] data
1052 */
1053 static void riff_find_chunk( DWORD chunk_id, DWORD chunk_type, const riff_chunk_t *parent_chunk, riff_chunk_t *chunk )
1054 {
1055 const unsigned char *ptr = parent_chunk->data;
1056 const unsigned char *end = parent_chunk->data + (parent_chunk->data_size - (2 * sizeof(DWORD)));
1057
1058 if (chunk_type == ANI_LIST_ID || chunk_type == ANI_RIFF_ID) end -= sizeof(DWORD);
1059
1060 while (ptr < end)
1061 {
1062 if ((!chunk_type && *(const DWORD *)ptr == chunk_id )
1063 || (chunk_type && *(const DWORD *)ptr == chunk_type && *((const DWORD *)ptr + 2) == chunk_id ))
1064 {
1065 ptr += sizeof(DWORD);
1066 chunk->data_size = (*(const DWORD *)ptr + 1) & ~1;
1067 ptr += sizeof(DWORD);
1068 if (chunk_type == ANI_LIST_ID || chunk_type == ANI_RIFF_ID) ptr += sizeof(DWORD);
1069 chunk->data = ptr;
1070
1071 return;
1072 }
1073
1074 ptr += sizeof(DWORD);
1075 ptr += (*(const DWORD *)ptr + 1) & ~1;
1076 ptr += sizeof(DWORD);
1077 }
1078 }
1079
1080
1081 /*
1082 * .ANI layout:
1083 *
1084 * RIFF:'ACON' RIFF chunk
1085 * |- CHUNK:'anih' Header
1086 * |- CHUNK:'seq ' Sequence information (optional)
1087 * \- LIST:'fram' Frame list
1088 * |- CHUNK:icon Cursor frames
1089 * |- CHUNK:icon
1090 * |- ...
1091 * \- CHUNK:icon
1092 */
1093 static HCURSOR CURSORICON_CreateIconFromANI( const BYTE *bits, DWORD bits_size, INT width, INT height,
1094 INT depth, BOOL is_icon, UINT loadflags )
1095 {
1096 struct animated_cursoricon_object *ani_icon_data;
1097 struct cursoricon_object *info;
1098 DWORD *frame_rates = NULL;
1099 DWORD *frame_seq = NULL;
1100 ani_header header = {0};
1101 BOOL use_seq = FALSE;
1102 HCURSOR cursor = 0;
1103 UINT i;
1104 BOOL error = FALSE;
1105 HICON *frames;
1106
1107 riff_chunk_t root_chunk = { bits_size, bits };
1108 riff_chunk_t ACON_chunk = {0};
1109 riff_chunk_t anih_chunk = {0};
1110 riff_chunk_t fram_chunk = {0};
1111 riff_chunk_t rate_chunk = {0};
1112 riff_chunk_t seq_chunk = {0};
1113 const unsigned char *icon_chunk;
1114 const unsigned char *icon_data;
1115
1116 TRACE("bits %p, bits_size %d\n", bits, bits_size);
1117
1118 riff_find_chunk( ANI_ACON_ID, ANI_RIFF_ID, &root_chunk, &ACON_chunk );
1119 if (!ACON_chunk.data)
1120 {
1121 ERR("Failed to get root chunk.\n");
1122 return 0;
1123 }
1124
1125 riff_find_chunk( ANI_anih_ID, 0, &ACON_chunk, &anih_chunk );
1126 if (!anih_chunk.data)
1127 {
1128 ERR("Failed to get 'anih' chunk.\n");
1129 return 0;
1130 }
1131 memcpy( &header, anih_chunk.data, sizeof(header) );
1132 dump_ani_header( &header );
1133
1134 if (!(header.flags & ANI_FLAG_ICON))
1135 {
1136 FIXME("Raw animated icon/cursor data is not currently supported.\n");
1137 return 0;
1138 }
1139
1140 if (header.flags & ANI_FLAG_SEQUENCE)
1141 {
1142 riff_find_chunk( ANI_seq__ID, 0, &ACON_chunk, &seq_chunk );
1143 if (seq_chunk.data)
1144 {
1145 frame_seq = (DWORD *) seq_chunk.data;
1146 use_seq = TRUE;
1147 }
1148 else
1149 {
1150 FIXME("Sequence data expected but not found, assuming steps == frames.\n");
1151 header.num_steps = header.num_frames;
1152 }
1153 }
1154
1155 riff_find_chunk( ANI_rate_ID, 0, &ACON_chunk, &rate_chunk );
1156 if (rate_chunk.data)
1157 frame_rates = (DWORD *) rate_chunk.data;
1158
1159 riff_find_chunk( ANI_fram_ID, ANI_LIST_ID, &ACON_chunk, &fram_chunk );
1160 if (!fram_chunk.data)
1161 {
1162 ERR("Failed to get icon list.\n");
1163 return 0;
1164 }
1165
1166 cursor = alloc_icon_handle( TRUE, header.num_steps );
1167 if (!cursor) return 0;
1168 frames = HeapAlloc( GetProcessHeap(), 0, sizeof(DWORD)*header.num_frames );
1169 if (!frames)
1170 {
1171 free_icon_handle( cursor );
1172 return 0;
1173 }
1174
1175 info = get_icon_ptr( cursor );
1176 ani_icon_data = (struct animated_cursoricon_object *) info;
1177 info->is_icon = is_icon;
1178 ani_icon_data->num_frames = header.num_frames;
1179
1180 /* The .ANI stores the display rate in jiffies (1/60s) */
1181 info->delay = header.display_rate;
1182
1183 icon_chunk = fram_chunk.data;
1184 icon_data = fram_chunk.data + (2 * sizeof(DWORD));
1185 for (i=0; i<header.num_frames; i++)
1186 {
1187 const DWORD chunk_size = *(const DWORD *)(icon_chunk + sizeof(DWORD));
1188 const CURSORICONFILEDIRENTRY *entry;
1189 INT frameWidth, frameHeight;
1190 const BITMAPINFO *bmi;
1191
1192 entry = CURSORICON_FindBestIconFile((const CURSORICONFILEDIR *) icon_data,
1193 bits + bits_size - icon_data,
1194 width, height, depth, loadflags );
1195
1196 info->hotspot.x = entry->xHotspot;
1197 info->hotspot.y = entry->yHotspot;
1198 if (!header.width || !header.height)
1199 {
1200 frameWidth = entry->bWidth;
1201 frameHeight = entry->bHeight;
1202 }
1203 else
1204 {
1205 frameWidth = header.width;
1206 frameHeight = header.height;
1207 }
1208
1209 frames[i] = NULL;
1210 if (entry->dwDIBOffset < bits + bits_size - icon_data)
1211 {
1212 bmi = (const BITMAPINFO *) (icon_data + entry->dwDIBOffset);
1213 /* Grab a frame from the animation */
1214 frames[i] = create_icon_from_bmi( bmi, bits + bits_size - (const BYTE *)bmi,
1215 NULL, NULL, NULL, info->hotspot,
1216 is_icon, frameWidth, frameHeight, loadflags );
1217 }
1218
1219 if (!frames[i])
1220 {
1221 FIXME_(cursor)("failed to convert animated cursor frame.\n");
1222 error = TRUE;
1223 if (i == 0)
1224 {
1225 FIXME_(cursor)("Completely failed to create animated cursor!\n");
1226 ani_icon_data->num_frames = 0;
1227 release_icon_ptr( cursor, info );
1228 free_icon_handle( cursor );
1229 HeapFree( GetProcessHeap(), 0, frames );
1230 return 0;
1231 }
1232 break;
1233 }
1234
1235 /* Advance to the next chunk */
1236 icon_chunk += chunk_size + (2 * sizeof(DWORD));
1237 icon_data = icon_chunk + (2 * sizeof(DWORD));
1238 }
1239
1240 /* There was an error but we at least decoded the first frame, so just use that frame */
1241 if (error)
1242 {
1243 FIXME_(cursor)("Error creating animated cursor, only using first frame!\n");
1244 for (i=1; i<ani_icon_data->num_frames; i++)
1245 free_icon_handle( ani_icon_data->frames[i] );
1246 use_seq = FALSE;
1247 info->delay = 0;
1248 ani_icon_data->num_steps = 1;
1249 ani_icon_data->num_frames = 1;
1250 }
1251
1252 /* Setup the animated frames in the correct sequence */
1253 for (i=0; i<ani_icon_data->num_steps; i++)
1254 {
1255 DWORD frame_id = use_seq ? frame_seq[i] : i;
1256 struct cursoricon_frame *frame;
1257
1258 if (frame_id >= ani_icon_data->num_frames)
1259 {
1260 frame_id = ani_icon_data->num_frames-1;
1261 ERR_(cursor)("Sequence indicates frame past end of list, corrupt?\n");
1262 }
1263 ani_icon_data->frames[i] = frames[frame_id];
1264 frame = get_icon_frame( info, i );
1265 if (frame_rates)
1266 frame->delay = frame_rates[i];
1267 else
1268 frame->delay = ~0;
1269 release_icon_frame( info, i, frame );
1270 }
1271
1272 HeapFree( GetProcessHeap(), 0, frames );
1273 release_icon_ptr( cursor, info );
1274
1275 return cursor;
1276 }
1277
1278
1279 /**********************************************************************
1280 * CreateIconFromResourceEx (USER32.@)
1281 *
1282 * FIXME: Convert to mono when cFlag is LR_MONOCHROME.
1283 */
1284 HICON WINAPI CreateIconFromResourceEx( LPBYTE bits, UINT cbSize,
1285 BOOL bIcon, DWORD dwVersion,
1286 INT width, INT height,
1287 UINT cFlag )
1288 {
1289 POINT hotspot;
1290 const BITMAPINFO *bmi;
1291
1292 TRACE_(cursor)("%p (%u bytes), ver %08x, %ix%i %s %s\n",
1293 bits, cbSize, dwVersion, width, height,
1294 bIcon ? "icon" : "cursor", (cFlag & LR_MONOCHROME) ? "mono" : "" );
1295
1296 if (!bits) return 0;
1297
1298 if (dwVersion == 0x00020000)
1299 {
1300 FIXME_(cursor)("\t2.xx resources are not supported\n");
1301 return 0;
1302 }
1303
1304 /* Check if the resource is an animated icon/cursor */
1305 if (!memcmp(bits, "RIFF", 4))
1306 return CURSORICON_CreateIconFromANI( bits, cbSize, width, height,
1307 0 /* default depth */, bIcon, cFlag );
1308
1309 if (bIcon)
1310 {
1311 hotspot.x = width / 2;
1312 hotspot.y = height / 2;
1313 bmi = (BITMAPINFO *)bits;
1314 }
1315 else /* get the hotspot */
1316 {
1317 const SHORT *pt = (const SHORT *)bits;
1318 hotspot.x = pt[0];
1319 hotspot.y = pt[1];
1320 bmi = (const BITMAPINFO *)(pt + 2);
1321 cbSize -= 2 * sizeof(*pt);
1322 }
1323
1324 return create_icon_from_bmi( bmi, cbSize, NULL, NULL, NULL, hotspot, bIcon, width, height, cFlag );
1325 }
1326
1327
1328 /**********************************************************************
1329 * CreateIconFromResource (USER32.@)
1330 */
1331 HICON WINAPI CreateIconFromResource( LPBYTE bits, UINT cbSize,
1332 BOOL bIcon, DWORD dwVersion)
1333 {
1334 return CreateIconFromResourceEx( bits, cbSize, bIcon, dwVersion, 0,0,0);
1335 }
1336
1337
1338 static HICON CURSORICON_LoadFromFile( LPCWSTR filename,
1339 INT width, INT height, INT depth,
1340 BOOL fCursor, UINT loadflags)
1341 {
1342 const CURSORICONFILEDIRENTRY *entry;
1343 const CURSORICONFILEDIR *dir;
1344 DWORD filesize = 0;
1345 HICON hIcon = 0;
1346 const BYTE *bits;
1347 POINT hotspot;
1348
1349 TRACE("loading %s\n", debugstr_w( filename ));
1350
1351 bits = map_fileW( filename, &filesize );
1352 if (!bits)
1353 return hIcon;
1354
1355 /* Check for .ani. */
1356 if (memcmp( bits, "RIFF", 4 ) == 0)
1357 {
1358 hIcon = CURSORICON_CreateIconFromANI( bits, filesize, width, height, depth, !fCursor, loadflags );
1359 goto end;
1360 }
1361
1362 dir = (const CURSORICONFILEDIR*) bits;
1363 if ( filesize < FIELD_OFFSET( CURSORICONFILEDIR, idEntries[dir->idCount] ))
1364 goto end;
1365
1366 if ( fCursor )
1367 entry = CURSORICON_FindBestCursorFile( dir, filesize, width, height, depth, loadflags );
1368 else
1369 entry = CURSORICON_FindBestIconFile( dir, filesize, width, height, depth, loadflags );
1370
1371 if ( !entry )
1372 goto end;
1373
1374 /* check that we don't run off the end of the file */
1375 if ( entry->dwDIBOffset > filesize )
1376 goto end;
1377 if ( entry->dwDIBOffset + entry->dwDIBSize > filesize )
1378 goto end;
1379
1380 hotspot.x = entry->xHotspot;
1381 hotspot.y = entry->yHotspot;
1382 hIcon = create_icon_from_bmi( (const BITMAPINFO *)&bits[entry->dwDIBOffset], filesize - entry->dwDIBOffset,
1383 NULL, NULL, NULL, hotspot, !fCursor, width, height, loadflags );
1384 end:
1385 TRACE("loaded %s -> %p\n", debugstr_w( filename ), hIcon );
1386 UnmapViewOfFile( bits );
1387 return hIcon;
1388 }
1389
1390 /**********************************************************************
1391 * CURSORICON_Load
1392 *
1393 * Load a cursor or icon from resource or file.
1394 */
1395 static HICON CURSORICON_Load(HINSTANCE hInstance, LPCWSTR name,
1396 INT width, INT height, INT depth,
1397 BOOL fCursor, UINT loadflags)
1398 {
1399 HANDLE handle = 0;
1400 HICON hIcon = 0;
1401 HRSRC hRsrc;
1402 DWORD size;
1403 const CURSORICONDIR *dir;
1404 const CURSORICONDIRENTRY *dirEntry;
1405 const BYTE *bits;
1406 WORD wResId;
1407 POINT hotspot;
1408
1409 TRACE("%p, %s, %dx%d, depth %d, fCursor %d, flags 0x%04x\n",
1410 hInstance, debugstr_w(name), width, height, depth, fCursor, loadflags);
1411
1412 if ( loadflags & LR_LOADFROMFILE ) /* Load from file */
1413 return CURSORICON_LoadFromFile( name, width, height, depth, fCursor, loadflags );
1414
1415 if (!hInstance) hInstance = user32_module; /* Load OEM cursor/icon */
1416
1417 /* don't cache 16-bit instances (FIXME: should never get 16-bit instances in the first place) */
1418 if ((ULONG_PTR)hInstance >> 16 == 0) loadflags &= ~LR_SHARED;
1419
1420 /* Get directory resource ID */
1421
1422 if (!(hRsrc = FindResourceW( hInstance, name,
1423 (LPWSTR)(fCursor ? RT_GROUP_CURSOR : RT_GROUP_ICON) )))
1424 {
1425 /* try animated resource */
1426 if (!(hRsrc = FindResourceW( hInstance, name,
1427 (LPWSTR)(fCursor ? RT_ANICURSOR : RT_ANIICON) ))) return 0;
1428 if (!(handle = LoadResource( hInstance, hRsrc ))) return 0;
1429 bits = LockResource( handle );
1430 return CURSORICON_CreateIconFromANI( bits, SizeofResource( hInstance, handle ),
1431 width, height, depth, !fCursor, loadflags );
1432 }
1433
1434 /* Find the best entry in the directory */
1435
1436 if (!(handle = LoadResource( hInstance, hRsrc ))) return 0;
1437 if (!(dir = LockResource( handle ))) return 0;
1438 size = SizeofResource( hInstance, hRsrc );
1439 if (fCursor)
1440 dirEntry = CURSORICON_FindBestCursorRes( dir, size, width, height, depth, loadflags );
1441 else
1442 dirEntry = CURSORICON_FindBestIconRes( dir, size, width, height, depth, loadflags );
1443 if (!dirEntry) return 0;
1444 wResId = dirEntry->wResId;
1445 FreeResource( handle );
1446
1447 /* Load the resource */
1448
1449 if (!(hRsrc = FindResourceW(hInstance,MAKEINTRESOURCEW(wResId),
1450 (LPWSTR)(fCursor ? RT_CURSOR : RT_ICON) ))) return 0;
1451
1452 /* If shared icon, check whether it was already loaded */
1453 if (loadflags & LR_SHARED)
1454 {
1455 struct cursoricon_object *ptr;
1456
1457 USER_Lock();
1458 LIST_FOR_EACH_ENTRY( ptr, &icon_cache, struct cursoricon_object, entry )
1459 {
1460 if (ptr->module != hInstance) continue;
1461 if (ptr->rsrc != hRsrc) continue;
1462 hIcon = ptr->obj.handle;
1463 break;
1464 }
1465 USER_Unlock();
1466 if (hIcon) return hIcon;
1467 }
1468
1469 if (!(handle = LoadResource( hInstance, hRsrc ))) return 0;
1470 size = SizeofResource( hInstance, hRsrc );
1471 bits = LockResource( handle );
1472
1473 if (!fCursor)
1474 {
1475 hotspot.x = width / 2;
1476 hotspot.y = height / 2;
1477 }
1478 else /* get the hotspot */
1479 {
1480 const SHORT *pt = (const SHORT *)bits;
1481 hotspot.x = pt[0];
1482 hotspot.y = pt[1];
1483 bits += 2 * sizeof(SHORT);
1484 size -= 2 * sizeof(SHORT);
1485 }
1486 hIcon = create_icon_from_bmi( (const BITMAPINFO *)bits, size, hInstance, name, hRsrc,
1487 hotspot, !fCursor, width, height, loadflags );
1488 FreeResource( handle );
1489 return hIcon;
1490 }
1491
1492
1493 /***********************************************************************
1494 * CreateCursor (USER32.@)
1495 */
1496 HCURSOR WINAPI CreateCursor( HINSTANCE hInstance,
1497 INT xHotSpot, INT yHotSpot,
1498 INT nWidth, INT nHeight,
1499 LPCVOID lpANDbits, LPCVOID lpXORbits )
1500 {
1501 ICONINFO info;
1502 HCURSOR hCursor;
1503
1504 TRACE_(cursor)("%dx%d spot=%d,%d xor=%p and=%p\n",
1505 nWidth, nHeight, xHotSpot, yHotSpot, lpXORbits, lpANDbits);
1506
1507 info.fIcon = FALSE;
1508 info.xHotspot = xHotSpot;
1509 info.yHotspot = yHotSpot;
1510 info.hbmMask = CreateBitmap( nWidth, nHeight, 1, 1, lpANDbits );
1511 info.hbmColor = CreateBitmap( nWidth, nHeight, 1, 1, lpXORbits );
1512 hCursor = CreateIconIndirect( &info );
1513 DeleteObject( info.hbmMask );
1514 DeleteObject( info.hbmColor );
1515 return hCursor;
1516 }
1517
1518
1519 /***********************************************************************
1520 * CreateIcon (USER32.@)
1521 *
1522 * Creates an icon based on the specified bitmaps. The bitmaps must be
1523 * provided in a device dependent format and will be resized to
1524 * (SM_CXICON,SM_CYICON) and depth converted to match the screen's color
1525 * depth. The provided bitmaps must be top-down bitmaps.
1526 * Although Windows does not support 15bpp(*) this API must support it
1527 * for Winelib applications.
1528 *
1529 * (*) Windows does not support 15bpp but it supports the 555 RGB 16bpp
1530 * format!
1531 *
1532 * RETURNS
1533 * Success: handle to an icon
1534 * Failure: NULL
1535 *
1536 * FIXME: Do we need to resize the bitmaps?
1537 */
1538 HICON WINAPI CreateIcon(
1539 HINSTANCE hInstance, /* [in] the application's hInstance */
1540 INT nWidth, /* [in] the width of the provided bitmaps */
1541 INT nHeight, /* [in] the height of the provided bitmaps */
1542 BYTE bPlanes, /* [in] the number of planes in the provided bitmaps */
1543 BYTE bBitsPixel, /* [in] the number of bits per pixel of the lpXORbits bitmap */
1544 LPCVOID lpANDbits, /* [in] a monochrome bitmap representing the icon's mask */
1545 LPCVOID lpXORbits) /* [in] the icon's 'color' bitmap */
1546 {
1547 ICONINFO iinfo;
1548 HICON hIcon;
1549
1550 TRACE_(icon)("%dx%d, planes %d, bpp %d, xor %p, and %p\n",
1551 nWidth, nHeight, bPlanes, bBitsPixel, lpXORbits, lpANDbits);
1552
1553 iinfo.fIcon = TRUE;
1554 iinfo.xHotspot = nWidth / 2;
1555 iinfo.yHotspot = nHeight / 2;
1556 iinfo.hbmMask = CreateBitmap( nWidth, nHeight, 1, 1, lpANDbits );
1557 iinfo.hbmColor = CreateBitmap( nWidth, nHeight, bPlanes, bBitsPixel, lpXORbits );
1558
1559 hIcon = CreateIconIndirect( &iinfo );
1560
1561 DeleteObject( iinfo.hbmMask );
1562 DeleteObject( iinfo.hbmColor );
1563
1564 return hIcon;
1565 }
1566
1567
1568 /***********************************************************************
1569 * CopyIcon (USER32.@)
1570 */
1571 HICON WINAPI CopyIcon( HICON hIcon )
1572 {
1573 struct cursoricon_object *ptrOld, *ptrNew;
1574 HICON hNew;
1575
1576 if (!(ptrOld = get_icon_ptr( hIcon )))
1577 {
1578 SetLastError( ERROR_INVALID_CURSOR_HANDLE );
1579 return 0;
1580 }
1581 if ((hNew = alloc_icon_handle( FALSE, 1 )))
1582 {
1583 struct cursoricon_frame *frameOld, *frameNew;
1584
1585 ptrNew = get_icon_ptr( hNew );
1586 ptrNew->is_icon = ptrOld->is_icon;
1587 ptrNew->hotspot = ptrOld->hotspot;
1588 if (!(frameOld = get_icon_frame( ptrOld, 0 )))
1589 {
1590 release_icon_ptr( hIcon, ptrOld );
1591 SetLastError( ERROR_INVALID_CURSOR_HANDLE );
1592 return 0;
1593 }
1594 if (!(frameNew = get_icon_frame( ptrNew, 0 )))
1595 {
1596 release_icon_frame( ptrOld, 0, frameOld );
1597 release_icon_ptr( hIcon, ptrOld );
1598 SetLastError( ERROR_INVALID_CURSOR_HANDLE );
1599 return 0;
1600 }
1601 frameNew->delay = 0;
1602 frameNew->width = frameOld->width;
1603 frameNew->height = frameOld->height;
1604 frameNew->mask = copy_bitmap( frameOld->mask );
1605 frameNew->color = copy_bitmap( frameOld->color );
1606 frameNew->alpha = copy_bitmap( frameOld->alpha );
1607 release_icon_frame( ptrOld, 0, frameOld );
1608 release_icon_frame( ptrNew, 0, frameNew );
1609 release_icon_ptr( hNew, ptrNew );
1610 }
1611 release_icon_ptr( hIcon, ptrOld );
1612 return hNew;
1613 }
1614
1615
1616 /***********************************************************************
1617 * DestroyIcon (USER32.@)
1618 */
1619 BOOL WINAPI DestroyIcon( HICON hIcon )
1620 {
1621 BOOL ret = FALSE;
1622 struct cursoricon_object *obj = get_icon_ptr( hIcon );
1623
1624 TRACE_(icon)("%p\n", hIcon );
1625
1626 if (obj)
1627 {
1628 BOOL shared = (obj->rsrc != NULL);
1629 release_icon_ptr( hIcon, obj );
1630 ret = (GetCursor() != hIcon);
1631 if (!shared) free_icon_handle( hIcon );
1632 }
1633 return ret;
1634 }
1635
1636
1637 /***********************************************************************
1638 * DestroyCursor (USER32.@)
1639 */
1640 BOOL WINAPI DestroyCursor( HCURSOR hCursor )
1641 {
1642 return DestroyIcon( hCursor );
1643 }
1644
1645 /***********************************************************************
1646 * DrawIcon (USER32.@)
1647 */
1648 BOOL WINAPI DrawIcon( HDC hdc, INT x, INT y, HICON hIcon )
1649 {
1650 return DrawIconEx( hdc, x, y, hIcon, 0, 0, 0, 0, DI_NORMAL | DI_COMPAT | DI_DEFAULTSIZE );
1651 }
1652
1653 /***********************************************************************
1654 * SetCursor (USER32.@)
1655 *
1656 * Set the cursor shape.
1657 *
1658 * RETURNS
1659 * A handle to the previous cursor shape.
1660 */
1661 HCURSOR WINAPI DECLSPEC_HOTPATCH SetCursor( HCURSOR hCursor /* [in] Handle of cursor to show */ )
1662 {
1663 struct cursoricon_object *obj;
1664 HCURSOR hOldCursor;
1665 int show_count;
1666 BOOL ret;
1667
1668 TRACE("%p\n", hCursor);
1669
1670 SERVER_START_REQ( set_cursor )
1671 {
1672 req->flags = SET_CURSOR_HANDLE;
1673 req->handle = wine_server_user_handle( hCursor );
1674 if ((ret = !wine_server_call_err( req )))
1675 {
1676 hOldCursor = wine_server_ptr_handle( reply->prev_handle );
1677 show_count = reply->prev_count;
1678 }
1679 }
1680 SERVER_END_REQ;
1681
1682 if (!ret) return 0;
1683 USER_Driver->pSetCursor( show_count >= 0 ? hCursor : 0 );
1684
1685 if (!(obj = get_icon_ptr( hOldCursor ))) return 0;
1686 release_icon_ptr( hOldCursor, obj );
1687 return hOldCursor;
1688 }
1689
1690 /***********************************************************************
1691 * ShowCursor (USER32.@)
1692 */
1693 INT WINAPI DECLSPEC_HOTPATCH ShowCursor( BOOL bShow )
1694 {
1695 HCURSOR cursor;
1696 int increment = bShow ? 1 : -1;
1697 int count;
1698
1699 SERVER_START_REQ( set_cursor )
1700 {
1701 req->flags = SET_CURSOR_COUNT;
1702 req->show_count = increment;
1703 wine_server_call( req );
1704 cursor = wine_server_ptr_handle( reply->prev_handle );
1705 count = reply->prev_count + increment;
1706 }
1707 SERVER_END_REQ;
1708
1709 TRACE("%d, count=%d\n", bShow, count );
1710
1711 if (bShow && !count) USER_Driver->pSetCursor( cursor );
1712 else if (!bShow && count == -1) USER_Driver->pSetCursor( 0 );
1713
1714 return count;
1715 }
1716
1717 /***********************************************************************
1718 * GetCursor (USER32.@)
1719 */
1720 HCURSOR WINAPI GetCursor(void)
1721 {
1722 HCURSOR ret;
1723
1724 SERVER_START_REQ( set_cursor )
1725 {
1726 req->flags = 0;
1727 wine_server_call( req );
1728 ret = wine_server_ptr_handle( reply->prev_handle );
1729 }
1730 SERVER_END_REQ;
1731 return ret;
1732 }
1733
1734
1735 /***********************************************************************
1736 * ClipCursor (USER32.@)
1737 */
1738 BOOL WINAPI DECLSPEC_HOTPATCH ClipCursor( const RECT *rect )
1739 {
1740 BOOL ret;
1741 RECT new_rect;
1742
1743 TRACE( "Clipping to %s\n", wine_dbgstr_rect(rect) );
1744
1745 if (rect && (rect->left > rect->right || rect->top > rect->bottom)) return FALSE;
1746
1747 SERVER_START_REQ( set_cursor )
1748 {
1749 req->clip_msg = WM_WINE_CLIPCURSOR;
1750 if (rect)
1751 {
1752 req->flags = SET_CURSOR_CLIP;
1753 req->clip.left = rect->left;
1754 req->clip.top = rect->top;
1755 req->clip.right = rect->right;
1756 req->clip.bottom = rect->bottom;
1757 }
1758 else req->flags = SET_CURSOR_NOCLIP;
1759
1760 if ((ret = !wine_server_call( req )))
1761 {
1762 new_rect.left = reply->new_clip.left;
1763 new_rect.top = reply->new_clip.top;
1764 new_rect.right = reply->new_clip.right;
1765 new_rect.bottom = reply->new_clip.bottom;
1766 }
1767 }
1768 SERVER_END_REQ;
1769 if (ret) USER_Driver->pClipCursor( &new_rect );
1770 return ret;
1771 }
1772
1773
1774 /***********************************************************************
1775 * GetClipCursor (USER32.@)
1776 */
1777 BOOL WINAPI DECLSPEC_HOTPATCH GetClipCursor( RECT *rect )
1778 {
1779 BOOL ret;
1780
1781 if (!rect) return FALSE;
1782
1783 SERVER_START_REQ( set_cursor )
1784 {
1785 req->flags = 0;
1786 if ((ret = !wine_server_call( req )))
1787 {
1788 rect->left = reply->new_clip.left;
1789 rect->top = reply->new_clip.top;
1790 rect->right = reply->new_clip.right;
1791 rect->bottom = reply->new_clip.bottom;
1792 }
1793 }
1794 SERVER_END_REQ;
1795 return ret;
1796 }
1797
1798
1799 /***********************************************************************
1800 * SetSystemCursor (USER32.@)
1801 */
1802 BOOL WINAPI SetSystemCursor(HCURSOR hcur, DWORD id)
1803 {
1804 FIXME("(%p,%08x),stub!\n", hcur, id);
1805 return TRUE;
1806 }
1807
1808
1809 /**********************************************************************
1810 * LookupIconIdFromDirectoryEx (USER32.@)
1811 */
1812 INT WINAPI LookupIconIdFromDirectoryEx( LPBYTE xdir, BOOL bIcon,
1813 INT width, INT height, UINT cFlag )
1814 {
1815 const CURSORICONDIR *dir = (const CURSORICONDIR*)xdir;
1816 UINT retVal = 0;
1817 if( dir && !dir->idReserved && (dir->idType & 3) )
1818 {
1819 const CURSORICONDIRENTRY* entry;
1820
1821 const HDC hdc = GetDC(0);
1822 const int depth = (cFlag & LR_MONOCHROME) ?
1823 1 : GetDeviceCaps(hdc, BITSPIXEL);
1824 ReleaseDC(0, hdc);
1825
1826 if( bIcon )
1827 entry = CURSORICON_FindBestIconRes( dir, ~0u, width, height, depth, LR_DEFAULTSIZE );
1828 else
1829 entry = CURSORICON_FindBestCursorRes( dir, ~0u, width, height, depth, LR_DEFAULTSIZE );
1830
1831 if( entry ) retVal = entry->wResId;
1832 }
1833 else WARN_(cursor)("invalid resource directory\n");
1834 return retVal;
1835 }
1836
1837 /**********************************************************************
1838 * LookupIconIdFromDirectory (USER32.@)
1839 */
1840 INT WINAPI LookupIconIdFromDirectory( LPBYTE dir, BOOL bIcon )
1841 {
1842 return LookupIconIdFromDirectoryEx( dir, bIcon, 0, 0, bIcon ? 0 : LR_MONOCHROME );
1843 }
1844
1845 /***********************************************************************
1846 * LoadCursorW (USER32.@)
1847 */
1848 HCURSOR WINAPI LoadCursorW(HINSTANCE hInstance, LPCWSTR name)
1849 {
1850 TRACE("%p, %s\n", hInstance, debugstr_w(name));
1851
1852 return LoadImageW( hInstance, name, IMAGE_CURSOR, 0, 0,
1853 LR_SHARED | LR_DEFAULTSIZE );
1854 }
1855
1856 /***********************************************************************
1857 * LoadCursorA (USER32.@)
1858 */
1859 HCURSOR WINAPI LoadCursorA(HINSTANCE hInstance, LPCSTR name)
1860 {
1861 TRACE("%p, %s\n", hInstance, debugstr_a(name));
1862
1863 return LoadImageA( hInstance, name, IMAGE_CURSOR, 0, 0,
1864 LR_SHARED | LR_DEFAULTSIZE );
1865 }
1866
1867 /***********************************************************************
1868 * LoadCursorFromFileW (USER32.@)
1869 */
1870 HCURSOR WINAPI LoadCursorFromFileW (LPCWSTR name)
1871 {
1872 TRACE("%s\n", debugstr_w(name));
1873
1874 return LoadImageW( 0, name, IMAGE_CURSOR, 0, 0,
1875 LR_LOADFROMFILE | LR_DEFAULTSIZE );
1876 }
1877
1878 /***********************************************************************
1879 * LoadCursorFromFileA (USER32.@)
1880 */
1881 HCURSOR WINAPI LoadCursorFromFileA (LPCSTR name)
1882 {
1883 TRACE("%s\n", debugstr_a(name));
1884
1885 return LoadImageA( 0, name, IMAGE_CURSOR, 0, 0,
1886 LR_LOADFROMFILE | LR_DEFAULTSIZE );
1887 }
1888
1889 /***********************************************************************
1890 * LoadIconW (USER32.@)
1891 */
1892 HICON WINAPI LoadIconW(HINSTANCE hInstance, LPCWSTR name)
1893 {
1894 TRACE("%p, %s\n", hInstance, debugstr_w(name));
1895
1896 return LoadImageW( hInstance, name, IMAGE_ICON, 0, 0,
1897 LR_SHARED | LR_DEFAULTSIZE );
1898 }
1899
1900 /***********************************************************************
1901 * LoadIconA (USER32.@)
1902 */
1903 HICON WINAPI LoadIconA(HINSTANCE hInstance, LPCSTR name)
1904 {
1905 TRACE("%p, %s\n", hInstance, debugstr_a(name));
1906
1907 return LoadImageA( hInstance, name, IMAGE_ICON, 0, 0,
1908 LR_SHARED | LR_DEFAULTSIZE );
1909 }
1910
1911 /**********************************************************************
1912 * GetCursorFrameInfo (USER32.@)
1913 *
1914 * NOTES
1915 * So far no use has been found for the second parameter, it is currently presumed
1916 * that this parameter is reserved for future use.
1917 *
1918 * PARAMS
1919 * hCursor [I] Handle to cursor for which to retrieve information
1920 * reserved [I] No purpose has been found for this parameter (may be NULL)
1921 * istep [I] The step of the cursor for which to retrieve information
1922 * rate_jiffies [O] Pointer to DWORD that receives the frame-specific delay (cannot be NULL)
1923 * num_steps [O] Pointer to DWORD that receives the number of steps in the cursor (cannot be NULL)
1924 *
1925 * RETURNS
1926 * Success: Handle to a frame of the cursor (specified by istep)
1927 * Failure: NULL cursor (0)
1928 */
1929 HCURSOR WINAPI GetCursorFrameInfo(HCURSOR hCursor, DWORD reserved, DWORD istep, DWORD *rate_jiffies, DWORD *num_steps)
1930 {
1931 struct cursoricon_object *ptr;
1932 HCURSOR ret = 0;
1933 UINT icon_steps;
1934
1935 if (rate_jiffies == NULL || num_steps == NULL) return 0;
1936
1937 if (!(ptr = get_icon_ptr( hCursor ))) return 0;
1938
1939 TRACE("%p => %d %d %p %p\n", hCursor, reserved, istep, rate_jiffies, num_steps);
1940 if (reserved != 0)
1941 FIXME("Second parameter non-zero (%d), please report this!\n", reserved);
1942
1943 icon_steps = get_icon_steps(ptr);
1944 if (istep < icon_steps || !ptr->is_ani)
1945 {
1946 struct animated_cursoricon_object *ani_icon_data = (struct animated_cursoricon_object *) ptr;
1947 UINT icon_frames = 1;
1948
1949 if (ptr->is_ani)
1950 icon_frames = ani_icon_data->num_frames;
1951 if (ptr->is_ani && icon_frames > 1)
1952 ret = ani_icon_data->frames[istep];
1953 else
1954 ret = hCursor;
1955 if (icon_frames == 1)
1956 {
1957 *rate_jiffies = 0;
1958 *num_steps = 1;
1959 }
1960 else if (icon_steps == 1)
1961 {
1962 *num_steps = ~0;
1963 *rate_jiffies = ptr->delay;
1964 }
1965 else if (istep < icon_steps)
1966 {
1967 struct cursoricon_frame *frame;
1968
1969 *num_steps = icon_steps;
1970 frame = get_icon_frame( ptr, istep );
1971 if (get_icon_steps(ptr) == 1)
1972 *num_steps = ~0;
1973 else
1974 *num_steps = get_icon_steps(ptr);
1975 /* If this specific frame does not have a delay then use the global delay */
1976 if (frame->delay == ~0)
1977 *rate_jiffies = ptr->delay;
1978 else
1979 *rate_jiffies = frame->delay;
1980 release_icon_frame( ptr, istep, frame );
1981 }
1982 }
1983
1984 release_icon_ptr( hCursor, ptr );
1985
1986 return ret;
1987 }
1988
1989 /**********************************************************************
1990 * GetIconInfo (USER32.@)
1991 */
1992 BOOL WINAPI GetIconInfo(HICON hIcon, PICONINFO iconinfo)
1993 {
1994 ICONINFOEXW infoW;
1995
1996 infoW.cbSize = sizeof(infoW);
1997 if (!GetIconInfoExW( hIcon, &infoW )) return FALSE;
1998 iconinfo->fIcon = infoW.fIcon;
1999 iconinfo->xHotspot = infoW.xHotspot;
2000 iconinfo->yHotspot = infoW.yHotspot;
2001 iconinfo->hbmColor = infoW.hbmColor;
2002 iconinfo->hbmMask = infoW.hbmMask;
2003 return TRUE;
2004 }
2005
2006 /**********************************************************************
2007 * GetIconInfoExA (USER32.@)
2008 */
2009 BOOL WINAPI GetIconInfoExA( HICON icon, ICONINFOEXA *info )
2010 {
2011 ICONINFOEXW infoW;
2012
2013 if (info->cbSize != sizeof(*info))
2014 {
2015 SetLastError( ERROR_INVALID_PARAMETER );
2016 return FALSE;
2017 }
2018 infoW.cbSize = sizeof(infoW);
2019 if (!GetIconInfoExW( icon, &infoW )) return FALSE;
2020 info->fIcon = infoW.fIcon;
2021 info->xHotspot = infoW.xHotspot;
2022 info->yHotspot = infoW.yHotspot;
2023 info->hbmColor = infoW.hbmColor;
2024 info->hbmMask = infoW.hbmMask;
2025 info->wResID = infoW.wResID;
2026 WideCharToMultiByte( CP_ACP, 0, infoW.szModName, -1, info->szModName, MAX_PATH, NULL, NULL );
2027 WideCharToMultiByte( CP_ACP, 0, infoW.szResName, -1, info->szResName, MAX_PATH, NULL, NULL );
2028 return TRUE;
2029 }
2030
2031 /**********************************************************************
2032 * GetIconInfoExW (USER32.@)
2033 */
2034 BOOL WINAPI GetIconInfoExW( HICON icon, ICONINFOEXW *info )
2035 {
2036 struct cursoricon_frame *frame;
2037 struct cursoricon_object *ptr;
2038 HMODULE module;
2039 BOOL ret = TRUE;
2040
2041 if (info->cbSize != sizeof(*info))
2042 {
2043 SetLastError( ERROR_INVALID_PARAMETER );
2044 return FALSE;
2045 }
2046 if (!(ptr = get_icon_ptr( icon )))
2047 {
2048 SetLastError( ERROR_INVALID_CURSOR_HANDLE );
2049 return FALSE;
2050 }
2051
2052 frame = get_icon_frame( ptr, 0 );
2053 if (!frame)
2054 {
2055 release_icon_ptr( icon, ptr );
2056 SetLastError( ERROR_INVALID_CURSOR_HANDLE );
2057 return FALSE;
2058 }
2059
2060 TRACE("%p => %dx%d\n", icon, frame->width, frame->height);
2061
2062 info->fIcon = ptr->is_icon;
2063 info->xHotspot = ptr->hotspot.x;
2064 info->yHotspot = ptr->hotspot.y;
2065 info->hbmColor = copy_bitmap( frame->color );
2066 info->hbmMask = copy_bitmap( frame->mask );
2067 info->wResID = 0;
2068 info->szModName[0] = 0;
2069 info->szResName[0] = 0;
2070 if (ptr->module)
2071 {
2072 if (IS_INTRESOURCE( ptr->resname )) info->wResID = LOWORD( ptr->resname );
2073 else lstrcpynW( info->szResName, ptr->resname, MAX_PATH );
2074 }
2075 if (!info->hbmMask || (!info->hbmColor && frame->color))
2076 {
2077 DeleteObject( info->hbmMask );
2078 DeleteObject( info->hbmColor );
2079 ret = FALSE;
2080 }
2081 module = ptr->module;
2082 release_icon_frame( ptr, 0, frame );
2083 release_icon_ptr( icon, ptr );
2084 if (ret && module) GetModuleFileNameW( module, info->szModName, MAX_PATH );
2085 return ret;
2086 }
2087
2088 /* copy an icon bitmap, even when it can't be selected into a DC */
2089 /* helper for CreateIconIndirect */
2090 static void stretch_blt_icon( HDC hdc_dst, int dst_x, int dst_y, int dst_width, int dst_height,
2091 HBITMAP src, int width, int height )
2092 {
2093 HDC hdc = CreateCompatibleDC( 0 );
2094
2095 if (!SelectObject( hdc, src )) /* do it the hard way */
2096 {
2097 BITMAPINFO *info;
2098 void *bits;
2099
2100 if (!(info = HeapAlloc( GetProcessHeap(), 0, FIELD_OFFSET( BITMAPINFO, bmiColors[256] )))) return;
2101 info->bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
2102 info->bmiHeader.biWidth = width;
2103 info->bmiHeader.biHeight = height;
2104 info->bmiHeader.biPlanes = GetDeviceCaps( hdc_dst, PLANES );
2105 info->bmiHeader.biBitCount = GetDeviceCaps( hdc_dst, BITSPIXEL );
2106 info->bmiHeader.biCompression = BI_RGB;
2107 info->bmiHeader.biSizeImage = get_dib_image_size( width, height, info->bmiHeader.biBitCount );
2108 info->bmiHeader.biXPelsPerMeter = 0;
2109 info->bmiHeader.biYPelsPerMeter = 0;
2110 info->bmiHeader.biClrUsed = 0;
2111 info->bmiHeader.biClrImportant = 0;
2112 bits = HeapAlloc( GetProcessHeap(), 0, info->bmiHeader.biSizeImage );
2113 if (bits && GetDIBits( hdc, src, 0, height, bits, info, DIB_RGB_COLORS ))
2114 StretchDIBits( hdc_dst, dst_x, dst_y, dst_width, dst_height,
2115 0, 0, width, height, bits, info, DIB_RGB_COLORS, SRCCOPY );
2116
2117 HeapFree( GetProcessHeap(), 0, bits );
2118 HeapFree( GetProcessHeap(), 0, info );
2119 }
2120 else StretchBlt( hdc_dst, dst_x, dst_y, dst_width, dst_height, hdc, 0, 0, width, height, SRCCOPY );
2121
2122 DeleteDC( hdc );
2123 }
2124
2125 /**********************************************************************
2126 * CreateIconIndirect (USER32.@)
2127 */
2128 HICON WINAPI CreateIconIndirect(PICONINFO iconinfo)
2129 {
2130 BITMAP bmpXor, bmpAnd;
2131 HICON hObj;
2132 HBITMAP color = 0, mask;
2133 int width, height;
2134 HDC hdc;
2135
2136 TRACE("color %p, mask %p, hotspot %ux%u, fIcon %d\n",
2137 iconinfo->hbmColor, iconinfo->hbmMask,
2138 iconinfo->xHotspot, iconinfo->yHotspot, iconinfo->fIcon);
2139
2140 if (!iconinfo->hbmMask) return 0;
2141
2142 GetObjectW( iconinfo->hbmMask, sizeof(bmpAnd), &bmpAnd );
2143 TRACE("mask: width %d, height %d, width bytes %d, planes %u, bpp %u\n",
2144 bmpAnd.bmWidth, bmpAnd.bmHeight, bmpAnd.bmWidthBytes,
2145 bmpAnd.bmPlanes, bmpAnd.bmBitsPixel);
2146
2147 if (iconinfo->hbmColor)
2148 {
2149 GetObjectW( iconinfo->hbmColor, sizeof(bmpXor), &bmpXor );
2150 TRACE("color: width %d, height %d, width bytes %d, planes %u, bpp %u\n",
2151 bmpXor.bmWidth, bmpXor.bmHeight, bmpXor.bmWidthBytes,
2152 bmpXor.bmPlanes, bmpXor.bmBitsPixel);
2153
2154 width = bmpXor.bmWidth;
2155 height = bmpXor.bmHeight;
2156 if (bmpXor.bmPlanes * bmpXor.bmBitsPixel != 1 || bmpAnd.bmPlanes * bmpAnd.bmBitsPixel != 1)
2157 {
2158 color = CreateCompatibleBitmap( screen_dc, width, height );
2159 mask = CreateBitmap( width, height, 1, 1, NULL );
2160 }
2161 else mask = CreateBitmap( width, height * 2, 1, 1, NULL );
2162 }
2163 else
2164 {
2165 width = bmpAnd.bmWidth;
2166 height = bmpAnd.bmHeight;
2167 mask = CreateBitmap( width, height, 1, 1, NULL );
2168 }
2169
2170 hdc = CreateCompatibleDC( 0 );
2171 SelectObject( hdc, mask );
2172 stretch_blt_icon( hdc, 0, 0, width, height, iconinfo->hbmMask, bmpAnd.bmWidth, bmpAnd.bmHeight );
2173
2174 if (color)
2175 {
2176 SelectObject( hdc, color );
2177 stretch_blt_icon( hdc, 0, 0, width, height, iconinfo->hbmColor, width, height );
2178 }
2179 else if (iconinfo->hbmColor)
2180 {
2181 stretch_blt_icon( hdc, 0, height, width, height, iconinfo->hbmColor, width, height );
2182 }
2183 else height /= 2;
2184
2185 DeleteDC( hdc );
2186
2187 hObj = alloc_icon_handle( FALSE, 1 );
2188 if (hObj)
2189 {
2190 struct cursoricon_object *info = get_icon_ptr( hObj );
2191 struct cursoricon_frame *frame;
2192
2193 info->is_icon = iconinfo->fIcon;
2194 frame = get_icon_frame( info, 0 );
2195 frame->delay = ~0;
2196 frame->width = width;
2197 frame->height = height;
2198 frame->color = color;
2199 frame->mask = mask;
2200 frame->alpha = create_alpha_bitmap( iconinfo->hbmColor, mask, NULL, NULL );
2201 release_icon_frame( info, 0, frame );
2202 if (info->is_icon)
2203 {
2204 info->hotspot.x = width / 2;
2205 info->hotspot.y = height / 2;
2206 }
2207 else
2208 {
2209 info->hotspot.x = iconinfo->xHotspot;
2210 info->hotspot.y = iconinfo->yHotspot;
2211 }
2212
2213 release_icon_ptr( hObj, info );
2214 }
2215 return hObj;
2216 }
2217
2218 /******************************************************************************
2219 * DrawIconEx (USER32.@) Draws an icon or cursor on device context
2220 *
2221 * NOTES
2222 * Why is this using SM_CXICON instead of SM_CXCURSOR?
2223 *
2224 * PARAMS
2225 * hdc [I] Handle to device context
2226 * x0 [I] X coordinate of upper left corner
2227 * y0 [I] Y coordinate of upper left corner
2228 * hIcon [I] Handle to icon to draw
2229 * cxWidth [I] Width of icon
2230 * cyWidth [I] Height of icon
2231 * istep [I] Index of frame in animated cursor
2232 * hbr [I] Handle to background brush
2233 * flags [I] Icon-drawing flags
2234 *
2235 * RETURNS
2236 * Success: TRUE
2237 * Failure: FALSE
2238 */
2239 BOOL WINAPI DrawIconEx( HDC hdc, INT x0, INT y0, HICON hIcon,
2240 INT cxWidth, INT cyWidth, UINT istep,
2241 HBRUSH hbr, UINT flags )
2242 {
2243 struct cursoricon_frame *frame;
2244 struct cursoricon_object *ptr;
2245 HDC hdc_dest, hMemDC;
2246 BOOL result = FALSE, DoOffscreen;
2247 HBITMAP hB_off = 0;
2248 COLORREF oldFg, oldBg;
2249 INT x, y, nStretchMode;
2250
2251 TRACE_(icon)("(hdc=%p,pos=%d.%d,hicon=%p,extend=%d.%d,istep=%d,br=%p,flags=0x%08x)\n",
2252 hdc,x0,y0,hIcon,cxWidth,cyWidth,istep,hbr,flags );
2253
2254 if (!(ptr = get_icon_ptr( hIcon ))) return FALSE;
2255 if (istep >= get_icon_steps( ptr ))
2256 {
2257 TRACE_(icon)("Stepped past end of animated frames=%d\n", istep);
2258 release_icon_ptr( hIcon, ptr );
2259 return FALSE;
2260 }
2261 if (!(frame = get_icon_frame( ptr, istep )))
2262 {
2263 FIXME_(icon)("Error retrieving icon frame %d\n", istep);
2264 release_icon_ptr( hIcon, ptr );
2265 return FALSE;
2266 }
2267 if (!(hMemDC = CreateCompatibleDC( hdc )))
2268 {
2269 release_icon_frame( ptr, istep, frame );
2270 release_icon_ptr( hIcon, ptr );
2271 return FALSE;
2272 }
2273
2274 if (flags & DI_NOMIRROR)
2275 FIXME_(icon)("Ignoring flag DI_NOMIRROR\n");
2276
2277 /* Calculate the size of the destination image. */
2278 if (cxWidth == 0)
2279 {
2280 if (flags & DI_DEFAULTSIZE)
2281 cxWidth = GetSystemMetrics (SM_CXICON);
2282 else
2283 cxWidth = frame->width;
2284 }
2285 if (cyWidth == 0)
2286 {
2287 if (flags & DI_DEFAULTSIZE)
2288 cyWidth = GetSystemMetrics (SM_CYICON);
2289 else
2290 cyWidth = frame->height;
2291 }
2292
2293 DoOffscreen = (GetObjectType( hbr ) == OBJ_BRUSH);
2294
2295 if (DoOffscreen) {
2296 RECT r;
2297
2298 r.left = 0;
2299 r.top = 0;
2300 r.right = cxWidth;
2301 r.bottom = cxWidth;
2302
2303 if (!(hdc_dest = CreateCompatibleDC(hdc))) goto failed;
2304 if (!(hB_off = CreateCompatibleBitmap(hdc, cxWidth, cyWidth)))
2305 {
2306 DeleteDC( hdc_dest );
2307 goto failed;
2308 }
2309 SelectObject(hdc_dest, hB_off);
2310 FillRect(hdc_dest, &r, hbr);
2311 x = y = 0;
2312 }
2313 else
2314 {
2315 hdc_dest = hdc;
2316 x = x0;
2317 y = y0;
2318 }
2319
2320 nStretchMode = SetStretchBltMode (hdc, STRETCH_DELETESCANS);
2321
2322 oldFg = SetTextColor( hdc, RGB(0,0,0) );
2323 oldBg = SetBkColor( hdc, RGB(255,255,255) );
2324
2325 if (frame->alpha && (flags & DI_IMAGE))
2326 {
2327 BOOL alpha_blend = TRUE;
2328
2329 if (GetObjectType( hdc_dest ) == OBJ_MEMDC)
2330 {
2331 BITMAP bm;
2332 HBITMAP bmp = GetCurrentObject( hdc_dest, OBJ_BITMAP );
2333 alpha_blend = GetObjectW( bmp, sizeof(bm), &bm ) && bm.bmBitsPixel > 8;
2334 }
2335 if (alpha_blend)
2336 {
2337 BLENDFUNCTION pixelblend = { AC_SRC_OVER, 0, 255, AC_SRC_ALPHA };
2338 SelectObject( hMemDC, frame->alpha );
2339 if (GdiAlphaBlend( hdc_dest, x, y, cxWidth, cyWidth, hMemDC,
2340 0, 0, frame->width, frame->height,
2341 pixelblend )) goto done;
2342 }
2343 }
2344
2345 if (flags & DI_MASK)
2346 {
2347 DWORD rop = (flags & DI_IMAGE) ? SRCAND : SRCCOPY;
2348 SelectObject( hMemDC, frame->mask );
2349 StretchBlt( hdc_dest, x, y, cxWidth, cyWidth,
2350 hMemDC, 0, 0, frame->width, frame->height, rop );
2351 }
2352
2353 if (flags & DI_IMAGE)
2354 {
2355 if (frame->color)
2356 {
2357 DWORD rop = (flags & DI_MASK) ? SRCINVERT : SRCCOPY;
2358 SelectObject( hMemDC, frame->color );
2359 StretchBlt( hdc_dest, x, y, cxWidth, cyWidth,
2360 hMemDC, 0, 0, frame->width, frame->height, rop );
2361 }
2362 else
2363 {
2364 DWORD rop = (flags & DI_MASK) ? SRCINVERT : SRCCOPY;
2365 SelectObject( hMemDC, frame->mask );
2366 StretchBlt( hdc_dest, x, y, cxWidth, cyWidth,
2367 hMemDC, 0, frame->height, frame->width,
2368 frame->height, rop );
2369 }
2370 }
2371
2372 done:
2373 if (DoOffscreen) BitBlt( hdc, x0, y0, cxWidth, cyWidth, hdc_dest, 0, 0, SRCCOPY );
2374
2375 SetTextColor( hdc, oldFg );
2376 SetBkColor( hdc, oldBg );
2377 SetStretchBltMode (hdc, nStretchMode);
2378 result = TRUE;
2379 if (hdc_dest != hdc) DeleteDC( hdc_dest );
2380 if (hB_off) DeleteObject(hB_off);
2381 failed:
2382 DeleteDC( hMemDC );
2383 release_icon_frame( ptr, istep, frame );
2384 release_icon_ptr( hIcon, ptr );
2385 return result;
2386 }
2387
2388 /***********************************************************************
2389 * DIB_FixColorsToLoadflags
2390 *
2391 * Change color table entries when LR_LOADTRANSPARENT or LR_LOADMAP3DCOLORS
2392 * are in loadflags
2393 */
2394 static void DIB_FixColorsToLoadflags(BITMAPINFO * bmi, UINT loadflags, BYTE pix)
2395 {
2396 int colors;
2397 COLORREF c_W, c_S, c_F, c_L, c_C;
2398 int incr,i;
2399 RGBQUAD *ptr;
2400 int bitmap_type;
2401 LONG width;
2402 LONG height;
2403 WORD bpp;
2404 DWORD compr;
2405
2406 if (((bitmap_type = DIB_GetBitmapInfo((BITMAPINFOHEADER*) bmi, &width, &height, &bpp, &compr)) == -1))
2407 {
2408 WARN_(resource)("Invalid bitmap\n");
2409 return;
2410 }
2411
2412 if (bpp > 8) return;
2413
2414 if (bitmap_type == 0) /* BITMAPCOREHEADER */
2415 {
2416 incr = 3;
2417 colors = 1 << bpp;
2418 }
2419 else
2420 {
2421 incr = 4;
2422 colors = bmi->bmiHeader.biClrUsed;
2423 if (colors > 256) colors = 256;
2424 if (!colors && (bpp <= 8)) colors = 1 << bpp;
2425 }
2426
2427 c_W = GetSysColor(COLOR_WINDOW);
2428 c_S = GetSysColor(COLOR_3DSHADOW);
2429 c_F = GetSysColor(COLOR_3DFACE);
2430 c_L = GetSysColor(COLOR_3DLIGHT);
2431
2432 if (loadflags & LR_LOADTRANSPARENT) {
2433 switch (bpp) {
2434 case 1: pix = pix >> 7; break;
2435 case 4: pix = pix >> 4; break;
2436 case 8: break;
2437 default:
2438 WARN_(resource)("(%d): Unsupported depth\n", bpp);
2439 return;
2440 }
2441 if (pix >= colors) {
2442 WARN_(resource)("pixel has color index greater than biClrUsed!\n");
2443 return;
2444 }
2445 if (loadflags & LR_LOADMAP3DCOLORS) c_W = c_F;
2446 ptr = (RGBQUAD*)((char*)bmi->bmiColors+pix*incr);
2447 ptr->rgbBlue = GetBValue(c_W);
2448 ptr->rgbGreen = GetGValue(c_W);
2449 ptr->rgbRed = GetRValue(c_W);
2450 }
2451 if (loadflags & LR_LOADMAP3DCOLORS)
2452 for (i=0; i<colors; i++) {
2453 ptr = (RGBQUAD*)((char*)bmi->bmiColors+i*incr);
2454 c_C = RGB(ptr->rgbRed, ptr->rgbGreen, ptr->rgbBlue);
2455 if (c_C == RGB(128, 128, 128)) {
2456 ptr->rgbRed = GetRValue(c_S);
2457 ptr->rgbGreen = GetGValue(c_S);
2458 ptr->rgbBlue = GetBValue(c_S);
2459 } else if (c_C == RGB(192, 192, 192)) {
2460 ptr->rgbRed = GetRValue(c_F);
2461 ptr->rgbGreen = GetGValue(c_F);
2462 ptr->rgbBlue = GetBValue(c_F);
2463 } else if (c_C == RGB(223, 223, 223)) {
2464 ptr->rgbRed = GetRValue(c_L);
2465 ptr->rgbGreen = GetGValue(c_L);
2466 ptr->rgbBlue = GetBValue(c_L);
2467 }
2468 }
2469 }
2470
2471
2472 /**********************************************************************
2473 * BITMAP_Load
2474 */
2475 static HBITMAP BITMAP_Load( HINSTANCE instance, LPCWSTR name,
2476 INT desiredx, INT desiredy, UINT loadflags )
2477 {
2478 HBITMAP hbitmap = 0, orig_bm;
2479 HRSRC hRsrc;
2480 HGLOBAL handle;
2481 const char *ptr = NULL;
2482 BITMAPINFO *info, *fix_info = NULL, *scaled_info = NULL;
2483 int size;
2484 BYTE pix;
2485 char *bits;
2486 LONG width, height, new_width, new_height;
2487 WORD bpp_dummy;
2488 DWORD compr_dummy, offbits = 0;
2489 INT bm_type;
2490 HDC screen_mem_dc = NULL;
2491
2492 if (!(loadflags & LR_LOADFROMFILE))
2493 {
2494 if (!instance)
2495 {
2496 /* OEM bitmap: try to load the resource from user32.dll */
2497 instance = user32_module;
2498 }
2499
2500 if (!(hRsrc = FindResourceW( instance, name, (LPWSTR)RT_BITMAP ))) return 0;
2501 if (!(handle = LoadResource( instance, hRsrc ))) return 0;
2502
2503 if ((info = LockResource( handle )) == NULL) return 0;
2504 }
2505 else
2506 {
2507 BITMAPFILEHEADER * bmfh;
2508
2509 if (!(ptr = map_fileW( name, NULL ))) return 0;
2510 info = (BITMAPINFO *)(ptr + sizeof(BITMAPFILEHEADER));
2511 bmfh = (BITMAPFILEHEADER *)ptr;
2512 if (bmfh->bfType != 0x4d42 /* 'BM' */)
2513 {
2514 WARN("Invalid/unsupported bitmap format!\n");
2515 goto end;
2516 }
2517 if (bmfh->bfOffBits) offbits = bmfh->bfOffBits - sizeof(BITMAPFILEHEADER);
2518 }
2519
2520 bm_type = DIB_GetBitmapInfo( &info->bmiHeader, &width, &height,
2521 &bpp_dummy, &compr_dummy);
2522 if (bm_type == -1)
2523 {
2524 WARN("Invalid bitmap format!\n");
2525 goto end;
2526 }
2527
2528 size = bitmap_info_size(info, DIB_RGB_COLORS);
2529 fix_info = HeapAlloc(GetProcessHeap(), 0, size);
2530 scaled_info = HeapAlloc(GetProcessHeap(), 0, size);
2531
2532 if (!fix_info || !scaled_info) goto end;
2533 memcpy(fix_info, info, size);
2534
2535 pix = *((LPBYTE)info + size);
2536 DIB_FixColorsToLoadflags(fix_info, loadflags, pix);
2537
2538 memcpy(scaled_info, fix_info, size);
2539
2540 if(desiredx != 0)
2541 new_width = desiredx;
2542 else
2543 new_width = width;
2544
2545 if(desiredy != 0)
2546 new_height = height > 0 ? desiredy : -desiredy;
2547 else
2548 new_height = height;
2549
2550 if(bm_type == 0)
2551 {
2552 BITMAPCOREHEADER *core = (BITMAPCOREHEADER *)&scaled_info->bmiHeader;
2553 core->bcWidth = new_width;
2554 core->bcHeight = new_height;
2555 }
2556 else
2557 {
2558 /* Some sanity checks for BITMAPINFO (not applicable to BITMAPCOREINFO) */
2559 if (info->bmiHeader.biHeight > 65535 || info->bmiHeader.biWidth > 65535) {
2560 WARN("Broken BitmapInfoHeader!\n");
2561 goto end;
2562 }
2563
2564 scaled_info->bmiHeader.biWidth = new_width;
2565 scaled_info->bmiHeader.biHeight = new_height;
2566 }
2567
2568 if (new_height < 0) new_height = -new_height;
2569
2570 if (!screen_dc) screen_dc = CreateDCW( DISPLAYW, NULL, NULL, NULL );
2571 if (!(screen_mem_dc = CreateCompatibleDC( screen_dc ))) goto end;
2572
2573 bits = (char *)info + (offbits ? offbits : size);
2574
2575 if (loadflags & LR_CREATEDIBSECTION)
2576 {
2577 scaled_info->bmiHeader.biCompression = 0; /* DIBSection can't be compressed */
2578 hbitmap = CreateDIBSection(screen_dc, scaled_info, DIB_RGB_COLORS, NULL, 0, 0);
2579 }
2580 else
2581 {
2582 if (is_dib_monochrome(fix_info))
2583 hbitmap = CreateBitmap(new_width, new_height, 1, 1, NULL);
2584 else
2585 hbitmap = CreateCompatibleBitmap(screen_dc, new_width, new_height);
2586 }
2587
2588 orig_bm = SelectObject(screen_mem_dc, hbitmap);
2589 StretchDIBits(screen_mem_dc, 0, 0, new_width, new_height, 0, 0, width, height, bits, fix_info, DIB_RGB_COLORS, SRCCOPY);
2590 SelectObject(screen_mem_dc, orig_bm);
2591
2592 end:
2593 if (screen_mem_dc) DeleteDC(screen_mem_dc);
2594 HeapFree(GetProcessHeap(), 0, scaled_info);
2595 HeapFree(GetProcessHeap(), 0, fix_info);
2596 if (loadflags & LR_LOADFROMFILE) UnmapViewOfFile( ptr );
2597
2598 return hbitmap;
2599 }
2600
2601 /**********************************************************************
2602 * LoadImageA (USER32.@)
2603 *
2604 * See LoadImageW.
2605 */
2606 HANDLE WINAPI LoadImageA( HINSTANCE hinst, LPCSTR name, UINT type,
2607 INT desiredx, INT desiredy, UINT loadflags)
2608 {
2609 HANDLE res;
2610 LPWSTR u_name;
2611
2612 if (IS_INTRESOURCE(name))
2613 return LoadImageW(hinst, (LPCWSTR)name, type, desiredx, desiredy, loadflags);
2614
2615 __TRY {
2616 DWORD len = MultiByteToWideChar( CP_ACP, 0, name, -1, NULL, 0 );
2617 u_name = HeapAlloc( GetProcessHeap(), 0, len * sizeof(WCHAR) );
2618 MultiByteToWideChar( CP_ACP, 0, name, -1, u_name, len );
2619 }
2620 __EXCEPT_PAGE_FAULT {
2621 SetLastError( ERROR_INVALID_PARAMETER );
2622 return 0;
2623 }
2624 __ENDTRY
2625 res = LoadImageW(hinst, u_name, type, desiredx, desiredy, loadflags);
2626 HeapFree(GetProcessHeap(), 0, u_name);
2627 return res;
2628 }
2629
2630
2631 /******************************************************************************
2632 * LoadImageW (USER32.@) Loads an icon, cursor, or bitmap
2633 *
2634 * PARAMS
2635 * hinst [I] Handle of instance that contains image
2636 * name [I] Name of image
2637 * type [I] Type of image
2638 * desiredx [I] Desired width
2639 * desiredy [I] Desired height
2640 * loadflags [I] Load flags
2641 *
2642 * RETURNS
2643 * Success: Handle to newly loaded image
2644 * Failure: NULL
2645 *
2646 * FIXME: Implementation lacks some features, see LR_ defines in winuser.h
2647 */
2648 HANDLE WINAPI LoadImageW( HINSTANCE hinst, LPCWSTR name, UINT type,
2649 INT desiredx, INT desiredy, UINT loadflags )
2650 {
2651 int depth;
2652
2653 TRACE_(resource)("(%p,%s,%d,%d,%d,0x%08x)\n",
2654 hinst,debugstr_w(name),type,desiredx,desiredy,loadflags);
2655
2656 if (loadflags & LR_LOADFROMFILE) loadflags &= ~LR_SHARED;
2657 switch (type) {
2658 case IMAGE_BITMAP:
2659 return BITMAP_Load( hinst, name, desiredx, desiredy, loadflags );
2660
2661 case IMAGE_ICON:
2662 case IMAGE_CURSOR:
2663 depth = 1;
2664 if (!(loadflags & LR_MONOCHROME))
2665 {
2666 if (!screen_dc) screen_dc = CreateDCW( DISPLAYW, NULL, NULL, NULL );
2667 if (screen_dc) depth = GetDeviceCaps( screen_dc, BITSPIXEL );
2668 }
2669 return CURSORICON_Load(hinst, name, desiredx, desiredy, depth, (type == IMAGE_CURSOR), loadflags);
2670 }
2671 return 0;
2672 }
2673
2674 /******************************************************************************
2675 * CopyImage (USER32.@) Creates new image and copies attributes to it
2676 *
2677 * PARAMS
2678 * hnd [I] Handle to image to copy
2679 * type [I] Type of image to copy
2680 * desiredx [I] Desired width of new image
2681 * desiredy [I] Desired height of new image
2682 * flags [I] Copy flags
2683 *
2684 * RETURNS
2685 * Success: Handle to newly created image
2686 * Failure: NULL
2687 *
2688 * BUGS
2689 * Only Windows NT 4.0 supports the LR_COPYRETURNORG flag for bitmaps,
2690 * all other versions (95/2000/XP have been tested) ignore it.
2691 *
2692 * NOTES
2693 * If LR_CREATEDIBSECTION is absent, the copy will be monochrome for
2694 * a monochrome source bitmap or if LR_MONOCHROME is present, otherwise
2695 * the copy will have the same depth as the screen.
2696 * The content of the image will only be copied if the bit depth of the
2697 * original image is compatible with the bit depth of the screen, or
2698 * if the source is a DIB section.
2699 * The LR_MONOCHROME flag is ignored if LR_CREATEDIBSECTION is present.
2700 */
2701 HANDLE WINAPI CopyImage( HANDLE hnd, UINT type, INT desiredx,
2702 INT desiredy, UINT flags )
2703 {
2704 TRACE("hnd=%p, type=%u, desiredx=%d, desiredy=%d, flags=%x\n",
2705 hnd, type, desiredx, desiredy, flags);
2706
2707 switch (type)
2708 {
2709 case IMAGE_BITMAP:
2710 {
2711 HBITMAP res = NULL;
2712 DIBSECTION ds;
2713 int objSize;
2714 BITMAPINFO * bi;
2715
2716 objSize = GetObjectW( hnd, sizeof(ds), &ds );
2717 if (!objSize) return 0;
2718 if ((desiredx < 0) || (desiredy < 0)) return 0;
2719
2720 if (flags & LR_COPYFROMRESOURCE)
2721 {
2722 FIXME("The flag LR_COPYFROMRESOURCE is not implemented for bitmaps\n");
2723 }
2724
2725 if (desiredx == 0) desiredx = ds.dsBm.bmWidth;
2726 if (desiredy == 0) desiredy = ds.dsBm.bmHeight;
2727
2728 /* Allocate memory for a BITMAPINFOHEADER structure and a
2729 color table. The maximum number of colors in a color table
2730 is 256 which corresponds to a bitmap with depth 8.
2731 Bitmaps with higher depths don't have color tables. */
2732 bi = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(BITMAPINFOHEADER) + 256 * sizeof(RGBQUAD));
2733 if (!bi) return 0;
2734
2735 bi->bmiHeader.biSize = sizeof(bi->bmiHeader);
2736 bi->bmiHeader.biPlanes = ds.dsBm.bmPlanes;
2737 bi->bmiHeader.biBitCount = ds.dsBm.bmBitsPixel;
2738 bi->bmiHeader.biCompression = BI_RGB;
2739
2740 if (flags & LR_CREATEDIBSECTION)
2741 {
2742 /* Create a DIB section. LR_MONOCHROME is ignored */
2743 void * bits;
2744 HDC dc = CreateCompatibleDC(NULL);
2745
2746 if (objSize == sizeof(DIBSECTION))
2747 {
2748 /* The source bitmap is a DIB.
2749 Get its attributes to create an exact copy */
2750 memcpy(bi, &ds.dsBmih, sizeof(BITMAPINFOHEADER));
2751 }
2752
2753 bi->bmiHeader.biWidth = desiredx;
2754 bi->bmiHeader.biHeight = desiredy;
2755
2756 /* Get the color table or the color masks */
2757 GetDIBits(dc, hnd, 0, ds.dsBm.bmHeight, NULL, bi, DIB_RGB_COLORS);
2758
2759 res = CreateDIBSection(dc, bi, DIB_RGB_COLORS, &bits, NULL, 0);
2760 DeleteDC(dc);
2761 }
2762 else
2763 {
2764 /* Create a device-dependent bitmap */
2765
2766 BOOL monochrome = (flags & LR_MONOCHROME);
2767
2768 if (objSize == sizeof(DIBSECTION))
2769 {
2770 /* The source bitmap is a DIB section.
2771 Get its attributes */
2772 HDC dc = CreateCompatibleDC(NULL);
2773 bi->bmiHeader.biWidth = ds.dsBm.bmWidth;
2774 bi->bmiHeader.biHeight = ds.dsBm.bmHeight;
2775 GetDIBits(dc, hnd, 0, ds.dsBm.bmHeight, NULL, bi, DIB_RGB_COLORS);
2776 DeleteDC(dc);
2777
2778 if (!monochrome && ds.dsBm.bmBitsPixel == 1)
2779 {
2780 /* Look if the colors of the DIB are black and white */
2781
2782 monochrome =
2783 (bi->bmiColors[0].rgbRed == 0xff
2784 && bi->bmiColors[0].rgbGreen == 0xff
2785 && bi->bmiColors[0].rgbBlue == 0xff
2786 && bi->bmiColors[0].rgbReserved == 0
2787 && bi->bmiColors[1].rgbRed == 0
2788 && bi->bmiColors[1].rgbGreen == 0
2789 && bi->bmiColors[1].rgbBlue == 0
2790 && bi->bmiColors[1].rgbReserved == 0)
2791 ||
2792 (bi->bmiColors[0].rgbRed == 0
2793 && bi->bmiColors[0].rgbGreen == 0
2794 && bi->bmiColors[0].rgbBlue == 0
2795 && bi->bmiColors[0].rgbReserved == 0
2796 && bi->bmiColors[1].rgbRed == 0xff
2797 && bi->bmiColors[1].rgbGreen == 0xff
2798 && bi->bmiColors[1].rgbBlue == 0xff
2799 && bi->bmiColors[1].rgbReserved == 0);
2800 }
2801 }
2802 else if (!monochrome)
2803 {
2804 monochrome = ds.dsBm.bmBitsPixel == 1;
2805 }
2806
2807 if (monochrome)
2808 {
2809 res = CreateBitmap(desiredx, desiredy, 1, 1, NULL);
2810 }
2811 else
2812 {
2813 HDC screenDC = GetDC(NULL);
2814 res = CreateCompatibleBitmap(screenDC, desiredx, desiredy);
2815 ReleaseDC(NULL, screenDC);
2816 }
2817 }
2818
2819 if (res)
2820 {
2821 /* Only copy the bitmap if it's a DIB section or if it's
2822 compatible to the screen */
2823 BOOL copyContents;
2824
2825 if (objSize == sizeof(DIBSECTION))
2826 {
2827 copyContents = TRUE;
2828 }
2829 else
2830 {
2831 HDC screenDC = GetDC(NULL);
2832 int screen_depth = GetDeviceCaps(screenDC, BITSPIXEL);
2833 ReleaseDC(NULL, screenDC);
2834
2835 copyContents = (ds.dsBm.bmBitsPixel == 1 || ds.dsBm.bmBitsPixel == screen_depth);
2836 }
2837
2838 if (copyContents)
2839 {
2840 /* The source bitmap may already be selected in a device context,
2841 use GetDIBits/StretchDIBits and not StretchBlt */
2842
2843 HDC dc;
2844 void * bits;
2845
2846 dc = CreateCompatibleDC(NULL);
2847
2848 bi->bmiHeader.biWidth = ds.dsBm.bmWidth;
2849 bi->bmiHeader.biHeight = ds.dsBm.bmHeight;
2850 bi->bmiHeader.biSizeImage = 0;
2851 bi->bmiHeader.biClrUsed = 0;
2852 bi->bmiHeader.biClrImportant = 0;
2853
2854 /* Fill in biSizeImage */
2855 GetDIBits(dc, hnd, 0, ds.dsBm.bmHeight, NULL, bi, DIB_RGB_COLORS);
2856 bits = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, bi->bmiHeader.biSizeImage);
2857
2858 if (bits)
2859 {
2860 HBITMAP oldBmp;
2861
2862 /* Get the image bits of the source bitmap */
2863 GetDIBits(dc, hnd, 0, ds.dsBm.bmHeight, bits, bi, DIB_RGB_COLORS);
2864
2865 /* Copy it to the destination bitmap */
2866 oldBmp = SelectObject(dc, res);
2867 StretchDIBits(dc, 0, 0, desiredx, desiredy,
2868 0, 0, ds.dsBm.bmWidth, ds.dsBm.bmHeight,
2869 bits, bi, DIB_RGB_COLORS, SRCCOPY);
2870 SelectObject(dc, oldBmp);
2871
2872 HeapFree(GetProcessHeap(), 0, bits);
2873 }
2874
2875 DeleteDC(dc);
2876 }
2877
2878 if (flags & LR_COPYDELETEORG)
2879 {
2880 DeleteObject(hnd);
2881 }
2882 }
2883 HeapFree(GetProcessHeap(), 0, bi);
2884 return res;
2885 }
2886 case IMAGE_ICON:
2887 case IMAGE_CURSOR:
2888 {
2889 struct cursoricon_object *icon;
2890 HICON res = 0;
2891 int depth = (flags & LR_MONOCHROME) ? 1 : GetDeviceCaps( screen_dc, BITSPIXEL );
2892
2893 if (flags & LR_DEFAULTSIZE)
2894 {
2895 if (!desiredx) desiredx = GetSystemMetrics( type == IMAGE_ICON ? SM_CXICON : SM_CXCURSOR );
2896 if (!desiredy) desiredy = GetSystemMetrics( type == IMAGE_ICON ? SM_CYICON : SM_CYCURSOR );
2897 }
2898
2899 if (!(icon = get_icon_ptr( hnd ))) return 0;
2900
2901 if (icon->rsrc && (flags & LR_COPYFROMRESOURCE))
2902 res = CURSORICON_Load( icon->module, icon->resname, desiredx, desiredy, depth,
2903 !icon->is_icon, flags );
2904 else
2905 res = CopyIcon( hnd ); /* FIXME: change size if necessary */
2906 release_icon_ptr( hnd, icon );
2907
2908 if (res && (flags & LR_COPYDELETEORG)) DeleteObject( hnd );
2909 return res;
2910 }
2911 }
2912 return 0;
2913 }
2914
2915
2916 /******************************************************************************
2917 * LoadBitmapW (USER32.@) Loads bitmap from the executable file
2918 *
2919 * RETURNS
2920 * Success: Handle to specified bitmap
2921 * Failure: NULL
2922 */
2923 HBITMAP WINAPI LoadBitmapW(
2924 HINSTANCE instance, /* [in] Handle to application instance */
2925 LPCWSTR name) /* [in] Address of bitmap resource name */
2926 {
2927 return LoadImageW( instance, name, IMAGE_BITMAP, 0, 0, 0 );
2928 }
2929
2930 /**********************************************************************
2931 * LoadBitmapA (USER32.@)
2932 *
2933 * See LoadBitmapW.
2934 */
2935 HBITMAP WINAPI LoadBitmapA( HINSTANCE instance, LPCSTR name )
2936 {
2937 return LoadImageA( instance, name, IMAGE_BITMAP, 0, 0, 0 );
2938 }
Windows API implementation