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windowscodecs: Add support for 8bpp grayscale TIFF with 8bpp alpha.
[wine.git] / dlls / user32 / cursoricon.c
blobf7b6bcace90d4d3c180ab98ce1fb91eb17656c8c
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 HICON handle;
127
128 if (is_ani)
129 icon_size = FIELD_OFFSET( struct animated_cursoricon_object, frames[num_steps] );
130 else
131 icon_size = sizeof( struct static_cursoricon_object );
132 obj = HeapAlloc( GetProcessHeap(), HEAP_ZERO_MEMORY, icon_size );
133 if (!obj) return NULL;
134
135 obj->delay = 0;
136 obj->is_ani = is_ani;
137 if (is_ani)
138 {
139 struct animated_cursoricon_object *ani_icon_data = (struct animated_cursoricon_object *) obj;
140
141 ani_icon_data->num_steps = num_steps;
142 ani_icon_data->num_frames = num_steps; /* changed later for some animated cursors */
143 }
144
145 if (!(handle = alloc_user_handle( &obj->obj, USER_ICON )))
146 HeapFree( GetProcessHeap(), 0, obj );
147 return handle;
148 }
149
150 static struct cursoricon_object *get_icon_ptr( HICON handle )
151 {
152 struct cursoricon_object *obj = get_user_handle_ptr( handle, USER_ICON );
153 if (obj == OBJ_OTHER_PROCESS)
154 {
155 WARN( "icon handle %p from other process\n", handle );
156 obj = NULL;
157 }
158 return obj;
159 }
160
161 static void release_icon_ptr( HICON handle, struct cursoricon_object *ptr )
162 {
163 release_user_handle_ptr( ptr );
164 }
165
166 static struct cursoricon_frame *get_icon_frame( struct cursoricon_object *obj, int istep )
167 {
168 struct static_cursoricon_object *req_frame;
169
170 if (obj->is_ani)
171 {
172 struct animated_cursoricon_object *ani_icon_data;
173 struct cursoricon_object *frameobj;
174
175 ani_icon_data = (struct animated_cursoricon_object *) obj;
176 if (!(frameobj = get_icon_ptr( ani_icon_data->frames[istep] )))
177 return 0;
178 req_frame = (struct static_cursoricon_object *) frameobj;
179 }
180 else
181 req_frame = (struct static_cursoricon_object *) obj;
182
183 return &req_frame->frame;
184 }
185
186 static void release_icon_frame( struct cursoricon_object *obj, int istep, struct cursoricon_frame *frame )
187 {
188 if (obj->is_ani)
189 {
190 struct animated_cursoricon_object *ani_icon_data;
191 struct cursoricon_object *frameobj;
192
193 ani_icon_data = (struct animated_cursoricon_object *) obj;
194 frameobj = (struct cursoricon_object *) (((char *)frame) - FIELD_OFFSET(struct static_cursoricon_object, frame));
195 release_icon_ptr( ani_icon_data->frames[istep], frameobj );
196 }
197 }
198
199 static UINT get_icon_steps( struct cursoricon_object *obj )
200 {
201 if (obj->is_ani)
202 {
203 struct animated_cursoricon_object *ani_icon_data;
204
205 ani_icon_data = (struct animated_cursoricon_object *) obj;
206 return ani_icon_data->num_steps;
207 }
208 return 1;
209 }
210
211 static BOOL free_icon_handle( HICON handle )
212 {
213 struct cursoricon_object *obj = free_user_handle( handle, USER_ICON );
214
215 if (obj == OBJ_OTHER_PROCESS) WARN( "icon handle %p from other process\n", handle );
216 else if (obj)
217 {
218 ULONG_PTR param = obj->param;
219 UINT i;
220
221 assert( !obj->rsrc ); /* shared icons can't be freed */
222
223 if (!obj->is_ani)
224 {
225 struct cursoricon_frame *frame = get_icon_frame( obj, 0 );
226
227 if (frame->alpha) DeleteObject( frame->alpha );
228 if (frame->color) DeleteObject( frame->color );
229 DeleteObject( frame->mask );
230 release_icon_frame( obj, 0, frame );
231 }
232 else
233 {
234 struct animated_cursoricon_object *ani_icon_data = (struct animated_cursoricon_object *) obj;
235
236 for (i=0; i<ani_icon_data->num_steps; i++)
237 {
238 HICON hFrame = ani_icon_data->frames[i];
239
240 if (hFrame)
241 {
242 UINT j;
243
244 free_icon_handle( ani_icon_data->frames[i] );
245 for (j=0; j<ani_icon_data->num_steps; j++)
246 {
247 if (ani_icon_data->frames[j] == hFrame)
248 ani_icon_data->frames[j] = 0;
249 }
250 }
251 }
252 }
253 if (!IS_INTRESOURCE( obj->resname )) HeapFree( GetProcessHeap(), 0, obj->resname );
254 HeapFree( GetProcessHeap(), 0, obj );
255 if (wow_handlers.free_icon_param && param) wow_handlers.free_icon_param( param );
256 USER_Driver->pDestroyCursorIcon( handle );
257 return TRUE;
258 }
259 return FALSE;
260 }
261
262 ULONG_PTR get_icon_param( HICON handle )
263 {
264 ULONG_PTR ret = 0;
265 struct cursoricon_object *obj = get_user_handle_ptr( handle, USER_ICON );
266
267 if (obj == OBJ_OTHER_PROCESS) WARN( "icon handle %p from other process\n", handle );
268 else if (obj)
269 {
270 ret = obj->param;
271 release_user_handle_ptr( obj );
272 }
273 return ret;
274 }
275
276 ULONG_PTR set_icon_param( HICON handle, ULONG_PTR param )
277 {
278 ULONG_PTR ret = 0;
279 struct cursoricon_object *obj = get_user_handle_ptr( handle, USER_ICON );
280
281 if (obj == OBJ_OTHER_PROCESS) WARN( "icon handle %p from other process\n", handle );
282 else if (obj)
283 {
284 ret = obj->param;
285 obj->param = param;
286 release_user_handle_ptr( obj );
287 }
288 return ret;
289 }
290
291
292 /***********************************************************************
293 * map_fileW
294 *
295 * Helper function to map a file to memory:
296 * name - file name
297 * [RETURN] ptr - pointer to mapped file
298 * [RETURN] filesize - pointer size of file to be stored if not NULL
299 */
300 static const void *map_fileW( LPCWSTR name, LPDWORD filesize )
301 {
302 HANDLE hFile, hMapping;
303 LPVOID ptr = NULL;
304
305 hFile = CreateFileW( name, GENERIC_READ, FILE_SHARE_READ, NULL,
306 OPEN_EXISTING, FILE_FLAG_RANDOM_ACCESS, 0 );
307 if (hFile != INVALID_HANDLE_VALUE)
308 {
309 hMapping = CreateFileMappingW( hFile, NULL, PAGE_READONLY, 0, 0, NULL );
310 if (hMapping)
311 {
312 ptr = MapViewOfFile( hMapping, FILE_MAP_READ, 0, 0, 0 );
313 CloseHandle( hMapping );
314 if (filesize)
315 *filesize = GetFileSize( hFile, NULL );
316 }
317 CloseHandle( hFile );
318 }
319 return ptr;
320 }
321
322
323 /***********************************************************************
324 * get_dib_image_size
325 *
326 * Return the size of a DIB bitmap in bytes.
327 */
328 static int get_dib_image_size( int width, int height, int depth )
329 {
330 return (((width * depth + 31) / 8) & ~3) * abs( height );
331 }
332
333
334 /***********************************************************************
335 * bitmap_info_size
336 *
337 * Return the size of the bitmap info structure including color table.
338 */
339 static int bitmap_info_size( const BITMAPINFO * info, WORD coloruse )
340 {
341 unsigned int colors, size, masks = 0;
342
343 if (info->bmiHeader.biSize == sizeof(BITMAPCOREHEADER))
344 {
345 const BITMAPCOREHEADER *core = (const BITMAPCOREHEADER *)info;
346 colors = (core->bcBitCount <= 8) ? 1 << core->bcBitCount : 0;
347 return sizeof(BITMAPCOREHEADER) + colors *
348 ((coloruse == DIB_RGB_COLORS) ? sizeof(RGBTRIPLE) : sizeof(WORD));
349 }
350 else /* assume BITMAPINFOHEADER */
351 {
352 colors = info->bmiHeader.biClrUsed;
353 if (colors > 256) /* buffer overflow otherwise */
354 colors = 256;
355 if (!colors && (info->bmiHeader.biBitCount <= 8))
356 colors = 1 << info->bmiHeader.biBitCount;
357 if (info->bmiHeader.biCompression == BI_BITFIELDS) masks = 3;
358 size = max( info->bmiHeader.biSize, sizeof(BITMAPINFOHEADER) + masks * sizeof(DWORD) );
359 return size + colors * ((coloruse == DIB_RGB_COLORS) ? sizeof(RGBQUAD) : sizeof(WORD));
360 }
361 }
362
363
364 /***********************************************************************
365 * copy_bitmap
366 *
367 * Helper function to duplicate a bitmap.
368 */
369 static HBITMAP copy_bitmap( HBITMAP bitmap )
370 {
371 HDC src, dst = 0;
372 HBITMAP new_bitmap = 0;
373 BITMAP bmp;
374
375 if (!bitmap) return 0;
376 if (!GetObjectW( bitmap, sizeof(bmp), &bmp )) return 0;
377
378 if ((src = CreateCompatibleDC( 0 )) && (dst = CreateCompatibleDC( 0 )))
379 {
380 SelectObject( src, bitmap );
381 if ((new_bitmap = CreateCompatibleBitmap( src, bmp.bmWidth, bmp.bmHeight )))
382 {
383 SelectObject( dst, new_bitmap );
384 BitBlt( dst, 0, 0, bmp.bmWidth, bmp.bmHeight, src, 0, 0, SRCCOPY );
385 }
386 }
387 DeleteDC( dst );
388 DeleteDC( src );
389 return new_bitmap;
390 }
391
392
393 /***********************************************************************
394 * is_dib_monochrome
395 *
396 * Returns whether a DIB can be converted to a monochrome DDB.
397 *
398 * A DIB can be converted if its color table contains only black and
399 * white. Black must be the first color in the color table.
400 *
401 * Note : If the first color in the color table is white followed by
402 * black, we can't convert it to a monochrome DDB with
403 * SetDIBits, because black and white would be inverted.
404 */
405 static BOOL is_dib_monochrome( const BITMAPINFO* info )
406 {
407 if (info->bmiHeader.biBitCount != 1) return FALSE;
408
409 if (info->bmiHeader.biSize == sizeof(BITMAPCOREHEADER))
410 {
411 const RGBTRIPLE *rgb = ((const BITMAPCOREINFO*)info)->bmciColors;
412
413 /* Check if the first color is black */
414 if ((rgb->rgbtRed == 0) && (rgb->rgbtGreen == 0) && (rgb->rgbtBlue == 0))
415 {
416 rgb++;
417
418 /* Check if the second color is white */
419 return ((rgb->rgbtRed == 0xff) && (rgb->rgbtGreen == 0xff)
420 && (rgb->rgbtBlue == 0xff));
421 }
422 else return FALSE;
423 }
424 else /* assume BITMAPINFOHEADER */
425 {
426 const RGBQUAD *rgb = info->bmiColors;
427
428 /* Check if the first color is black */
429 if ((rgb->rgbRed == 0) && (rgb->rgbGreen == 0) &&
430 (rgb->rgbBlue == 0) && (rgb->rgbReserved == 0))
431 {
432 rgb++;
433
434 /* Check if the second color is white */
435 return ((rgb->rgbRed == 0xff) && (rgb->rgbGreen == 0xff)
436 && (rgb->rgbBlue == 0xff) && (rgb->rgbReserved == 0));
437 }
438 else return FALSE;
439 }
440 }
441
442 /***********************************************************************
443 * DIB_GetBitmapInfo
444 *
445 * Get the info from a bitmap header.
446 * Return 1 for INFOHEADER, 0 for COREHEADER, -1 in case of failure.
447 */
448 static int DIB_GetBitmapInfo( const BITMAPINFOHEADER *header, LONG *width,
449 LONG *height, WORD *bpp, DWORD *compr )
450 {
451 if (header->biSize == sizeof(BITMAPCOREHEADER))
452 {
453 const BITMAPCOREHEADER *core = (const BITMAPCOREHEADER *)header;
454 *width = core->bcWidth;
455 *height = core->bcHeight;
456 *bpp = core->bcBitCount;
457 *compr = 0;
458 return 0;
459 }
460 else if (header->biSize == sizeof(BITMAPINFOHEADER) ||
461 header->biSize == sizeof(BITMAPV4HEADER) ||
462 header->biSize == sizeof(BITMAPV5HEADER))
463 {
464 *width = header->biWidth;
465 *height = header->biHeight;
466 *bpp = header->biBitCount;
467 *compr = header->biCompression;
468 return 1;
469 }
470 WARN("unknown/wrong size (%u) for header\n", header->biSize);
471 return -1;
472 }
473
474 /**********************************************************************
475 * get_icon_size
476 */
477 BOOL get_icon_size( HICON handle, SIZE *size )
478 {
479 struct cursoricon_object *info;
480 struct cursoricon_frame *frame;
481
482 if (!(info = get_icon_ptr( handle ))) return FALSE;
483 frame = get_icon_frame( info, 0 );
484 size->cx = frame->width;
485 size->cy = frame->height;
486 release_icon_frame( info, 0, frame);
487 release_icon_ptr( handle, info );
488 return TRUE;
489 }
490
491 /*
492 * The following macro functions account for the irregularities of
493 * accessing cursor and icon resources in files and resource entries.
494 */
495 typedef BOOL (*fnGetCIEntry)( LPCVOID dir, DWORD size, int n,
496 int *width, int *height, int *bits );
497
498 /**********************************************************************
499 * CURSORICON_FindBestIcon
500 *
501 * Find the icon closest to the requested size and bit depth.
502 */
503 static int CURSORICON_FindBestIcon( LPCVOID dir, DWORD size, fnGetCIEntry get_entry,
504 int width, int height, int depth, UINT loadflags )
505 {
506 int i, cx, cy, bits, bestEntry = -1;
507 UINT iTotalDiff, iXDiff=0, iYDiff=0, iColorDiff;
508 UINT iTempXDiff, iTempYDiff, iTempColorDiff;
509
510 /* Find Best Fit */
511 iTotalDiff = 0xFFFFFFFF;
512 iColorDiff = 0xFFFFFFFF;
513
514 if (loadflags & LR_DEFAULTSIZE)
515 {
516 if (!width) width = GetSystemMetrics( SM_CXICON );
517 if (!height) height = GetSystemMetrics( SM_CYICON );
518 }
519 else if (!width && !height)
520 {
521 /* use the size of the first entry */
522 if (!get_entry( dir, size, 0, &width, &height, &bits )) return -1;
523 iTotalDiff = 0;
524 }
525
526 for ( i = 0; iTotalDiff && get_entry( dir, size, i, &cx, &cy, &bits ); i++ )
527 {
528 iTempXDiff = abs(width - cx);
529 iTempYDiff = abs(height - cy);
530
531 if(iTotalDiff > (iTempXDiff + iTempYDiff))
532 {
533 iXDiff = iTempXDiff;
534 iYDiff = iTempYDiff;
535 iTotalDiff = iXDiff + iYDiff;
536 }
537 }
538
539 /* Find Best Colors for Best Fit */
540 for ( i = 0; get_entry( dir, size, i, &cx, &cy, &bits ); i++ )
541 {
542 if(abs(width - cx) == iXDiff && abs(height - cy) == iYDiff)
543 {
544 iTempColorDiff = abs(depth - bits);
545 if(iColorDiff > iTempColorDiff)
546 {
547 bestEntry = i;
548 iColorDiff = iTempColorDiff;
549 }
550 }
551 }
552
553 return bestEntry;
554 }
555
556 static BOOL CURSORICON_GetResIconEntry( LPCVOID dir, DWORD size, int n,
557 int *width, int *height, int *bits )
558 {
559 const CURSORICONDIR *resdir = dir;
560 const ICONRESDIR *icon;
561
562 if ( resdir->idCount <= n )
563 return FALSE;
564 if ((const char *)&resdir->idEntries[n + 1] - (const char *)dir > size)
565 return FALSE;
566 icon = &resdir->idEntries[n].ResInfo.icon;
567 *width = icon->bWidth;
568 *height = icon->bHeight;
569 *bits = resdir->idEntries[n].wBitCount;
570 return TRUE;
571 }
572
573 /**********************************************************************
574 * CURSORICON_FindBestCursor
575 *
576 * Find the cursor closest to the requested size.
577 *
578 * FIXME: parameter 'color' ignored.
579 */
580 static int CURSORICON_FindBestCursor( LPCVOID dir, DWORD size, fnGetCIEntry get_entry,
581 int width, int height, int depth, UINT loadflags )
582 {
583 int i, maxwidth, maxheight, cx, cy, bits, bestEntry = -1;
584
585 if (loadflags & LR_DEFAULTSIZE)
586 {
587 if (!width) width = GetSystemMetrics( SM_CXCURSOR );
588 if (!height) height = GetSystemMetrics( SM_CYCURSOR );
589 }
590 else if (!width && !height)
591 {
592 /* use the first entry */
593 if (!get_entry( dir, size, 0, &width, &height, &bits )) return -1;
594 return 0;
595 }
596
597 /* Double height to account for AND and XOR masks */
598
599 height *= 2;
600
601 /* First find the largest one smaller than or equal to the requested size*/
602
603 maxwidth = maxheight = 0;
604 for ( i = 0; get_entry( dir, size, i, &cx, &cy, &bits ); i++ )
605 {
606 if ((cx <= width) && (cy <= height) &&
607 (cx > maxwidth) && (cy > maxheight))
608 {
609 bestEntry = i;
610 maxwidth = cx;
611 maxheight = cy;
612 }
613 }
614 if (bestEntry != -1) return bestEntry;
615
616 /* Now find the smallest one larger than the requested size */
617
618 maxwidth = maxheight = 255;
619 for ( i = 0; get_entry( dir, size, i, &cx, &cy, &bits ); i++ )
620 {
621 if (((cx < maxwidth) && (cy < maxheight)) || (bestEntry == -1))
622 {
623 bestEntry = i;
624 maxwidth = cx;
625 maxheight = cy;
626 }
627 }
628
629 return bestEntry;
630 }
631
632 static BOOL CURSORICON_GetResCursorEntry( LPCVOID dir, DWORD size, int n,
633 int *width, int *height, int *bits )
634 {
635 const CURSORICONDIR *resdir = dir;
636 const CURSORDIR *cursor;
637
638 if ( resdir->idCount <= n )
639 return FALSE;
640 if ((const char *)&resdir->idEntries[n + 1] - (const char *)dir > size)
641 return FALSE;
642 cursor = &resdir->idEntries[n].ResInfo.cursor;
643 *width = cursor->wWidth;
644 *height = cursor->wHeight;
645 *bits = resdir->idEntries[n].wBitCount;
646 return TRUE;
647 }
648
649 static const CURSORICONDIRENTRY *CURSORICON_FindBestIconRes( const CURSORICONDIR * dir, DWORD size,
650 int width, int height, int depth,
651 UINT loadflags )
652 {
653 int n;
654
655 n = CURSORICON_FindBestIcon( dir, size, CURSORICON_GetResIconEntry,
656 width, height, depth, loadflags );
657 if ( n < 0 )
658 return NULL;
659 return &dir->idEntries[n];
660 }
661
662 static const CURSORICONDIRENTRY *CURSORICON_FindBestCursorRes( const CURSORICONDIR *dir, DWORD size,
663 int width, int height, int depth,
664 UINT loadflags )
665 {
666 int n = CURSORICON_FindBestCursor( dir, size, CURSORICON_GetResCursorEntry,
667 width, height, depth, loadflags );
668 if ( n < 0 )
669 return NULL;
670 return &dir->idEntries[n];
671 }
672
673 static BOOL CURSORICON_GetFileEntry( LPCVOID dir, DWORD size, int n,
674 int *width, int *height, int *bits )
675 {
676 const CURSORICONFILEDIR *filedir = dir;
677 const CURSORICONFILEDIRENTRY *entry;
678 const BITMAPINFOHEADER *info;
679
680 if ( filedir->idCount <= n )
681 return FALSE;
682 if ((const char *)&filedir->idEntries[n + 1] - (const char *)dir > size)
683 return FALSE;
684 entry = &filedir->idEntries[n];
685 info = (const BITMAPINFOHEADER *)((const char *)dir + entry->dwDIBOffset);
686 if ((const char *)(info + 1) - (const char *)dir > size) return FALSE;
687 *width = entry->bWidth;
688 *height = entry->bHeight;
689 *bits = info->biBitCount;
690 return TRUE;
691 }
692
693 static const CURSORICONFILEDIRENTRY *CURSORICON_FindBestCursorFile( const CURSORICONFILEDIR *dir, DWORD size,
694 int width, int height, int depth,
695 UINT loadflags )
696 {
697 int n = CURSORICON_FindBestCursor( dir, size, CURSORICON_GetFileEntry,
698 width, height, depth, loadflags );
699 if ( n < 0 )
700 return NULL;
701 return &dir->idEntries[n];
702 }
703
704 static const CURSORICONFILEDIRENTRY *CURSORICON_FindBestIconFile( const CURSORICONFILEDIR *dir, DWORD size,
705 int width, int height, int depth,
706 UINT loadflags )
707 {
708 int n = CURSORICON_FindBestIcon( dir, size, CURSORICON_GetFileEntry,
709 width, height, depth, loadflags );
710 if ( n < 0 )
711 return NULL;
712 return &dir->idEntries[n];
713 }
714
715 /***********************************************************************
716 * bmi_has_alpha
717 */
718 static BOOL bmi_has_alpha( const BITMAPINFO *info, const void *bits )
719 {
720 int i;
721 BOOL has_alpha = FALSE;
722 const unsigned char *ptr = bits;
723
724 if (info->bmiHeader.biBitCount != 32) return FALSE;
725 for (i = 0; i < info->bmiHeader.biWidth * abs(info->bmiHeader.biHeight); i++, ptr += 4)
726 if ((has_alpha = (ptr[3] != 0))) break;
727 return has_alpha;
728 }
729
730 /***********************************************************************
731 * create_alpha_bitmap
732 *
733 * Create the alpha bitmap for a 32-bpp icon that has an alpha channel.
734 */
735 static HBITMAP create_alpha_bitmap( HBITMAP color, HBITMAP mask,
736 const BITMAPINFO *src_info, const void *color_bits )
737 {
738 HBITMAP alpha = 0;
739 BITMAPINFO *info = NULL;
740 BITMAP bm;
741 HDC hdc;
742 void *bits;
743 unsigned char *ptr;
744 int i;
745
746 if (!GetObjectW( color, sizeof(bm), &bm )) return 0;
747 if (bm.bmBitsPixel != 32) return 0;
748
749 if (!(hdc = CreateCompatibleDC( 0 ))) return 0;
750 if (!(info = HeapAlloc( GetProcessHeap(), 0, FIELD_OFFSET( BITMAPINFO, bmiColors[256] )))) goto done;
751 info->bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
752 info->bmiHeader.biWidth = bm.bmWidth;
753 info->bmiHeader.biHeight = -bm.bmHeight;
754 info->bmiHeader.biPlanes = 1;
755 info->bmiHeader.biBitCount = 32;
756 info->bmiHeader.biCompression = BI_RGB;
757 info->bmiHeader.biSizeImage = bm.bmWidth * bm.bmHeight * 4;
758 info->bmiHeader.biXPelsPerMeter = 0;
759 info->bmiHeader.biYPelsPerMeter = 0;
760 info->bmiHeader.biClrUsed = 0;
761 info->bmiHeader.biClrImportant = 0;
762 if (!(alpha = CreateDIBSection( hdc, info, DIB_RGB_COLORS, &bits, NULL, 0 ))) goto done;
763
764 if (src_info)
765 {
766 SelectObject( hdc, alpha );
767 StretchDIBits( hdc, 0, 0, bm.bmWidth, bm.bmHeight,
768 0, 0, src_info->bmiHeader.biWidth, src_info->bmiHeader.biHeight,
769 color_bits, src_info, DIB_RGB_COLORS, SRCCOPY );
770
771 }
772 else
773 {
774 GetDIBits( hdc, color, 0, bm.bmHeight, bits, info, DIB_RGB_COLORS );
775 if (!bmi_has_alpha( info, bits ))
776 {
777 DeleteObject( alpha );
778 alpha = 0;
779 goto done;
780 }
781 }
782
783 /* pre-multiply by alpha */
784 for (i = 0, ptr = bits; i < bm.bmWidth * bm.bmHeight; i++, ptr += 4)
785 {
786 unsigned int alpha = ptr[3];
787 ptr[0] = ptr[0] * alpha / 255;
788 ptr[1] = ptr[1] * alpha / 255;
789 ptr[2] = ptr[2] * alpha / 255;
790 }
791
792 done:
793 DeleteDC( hdc );
794 HeapFree( GetProcessHeap(), 0, info );
795 return alpha;
796 }
797
798
799 /***********************************************************************
800 * create_icon_from_bmi
801 *
802 * Create an icon from its BITMAPINFO.
803 */
804 static HICON create_icon_from_bmi( const BITMAPINFO *bmi, DWORD maxsize, HMODULE module, LPCWSTR resname,
805 HRSRC rsrc, POINT hotspot, BOOL bIcon, INT width, INT height,
806 UINT cFlag )
807 {
808 DWORD size, color_size, mask_size;
809 HBITMAP color = 0, mask = 0, alpha = 0;
810 const void *color_bits, *mask_bits;
811 BITMAPINFO *bmi_copy;
812 BOOL ret = FALSE;
813 BOOL do_stretch;
814 HICON hObj = 0;
815 HDC hdc = 0;
816
817 /* Check bitmap header */
818
819 if (maxsize < sizeof(BITMAPCOREHEADER))
820 {
821 WARN( "invalid size %u\n", maxsize );
822 return 0;
823 }
824 if (maxsize < bmi->bmiHeader.biSize)
825 {
826 WARN( "invalid header size %u\n", bmi->bmiHeader.biSize );
827 return 0;
828 }
829 if ( (bmi->bmiHeader.biSize != sizeof(BITMAPCOREHEADER)) &&
830 (bmi->bmiHeader.biSize != sizeof(BITMAPINFOHEADER) ||
831 (bmi->bmiHeader.biCompression != BI_RGB &&
832 bmi->bmiHeader.biCompression != BI_BITFIELDS)) )
833 {
834 WARN( "invalid bitmap header %u\n", bmi->bmiHeader.biSize );
835 return 0;
836 }
837
838 size = bitmap_info_size( bmi, DIB_RGB_COLORS );
839 color_size = get_dib_image_size( bmi->bmiHeader.biWidth, bmi->bmiHeader.biHeight / 2,
840 bmi->bmiHeader.biBitCount );
841 mask_size = get_dib_image_size( bmi->bmiHeader.biWidth, bmi->bmiHeader.biHeight / 2, 1 );
842 if (size > maxsize || color_size > maxsize - size)
843 {
844 WARN( "truncated file %u < %u+%u+%u\n", maxsize, size, color_size, mask_size );
845 return 0;
846 }
847 if (mask_size > maxsize - size - color_size) mask_size = 0; /* no mask */
848
849 if (cFlag & LR_DEFAULTSIZE)
850 {
851 if (!width) width = GetSystemMetrics( bIcon ? SM_CXICON : SM_CXCURSOR );
852 if (!height) height = GetSystemMetrics( bIcon ? SM_CYICON : SM_CYCURSOR );
853 }
854 else
855 {
856 if (!width) width = bmi->bmiHeader.biWidth;
857 if (!height) height = bmi->bmiHeader.biHeight/2;
858 }
859 do_stretch = (bmi->bmiHeader.biHeight/2 != height) ||
860 (bmi->bmiHeader.biWidth != width);
861
862 /* Scale the hotspot */
863 if (bIcon)
864 {
865 hotspot.x = width / 2;
866 hotspot.y = height / 2;
867 }
868 else if (do_stretch)
869 {
870 hotspot.x = (hotspot.x * width) / bmi->bmiHeader.biWidth;
871 hotspot.y = (hotspot.y * height) / (bmi->bmiHeader.biHeight / 2);
872 }
873
874 if (!screen_dc) screen_dc = CreateDCW( DISPLAYW, NULL, NULL, NULL );
875 if (!screen_dc) return 0;
876
877 if (!(bmi_copy = HeapAlloc( GetProcessHeap(), 0, max( size, FIELD_OFFSET( BITMAPINFO, bmiColors[2] )))))
878 return 0;
879 if (!(hdc = CreateCompatibleDC( 0 ))) goto done;
880
881 memcpy( bmi_copy, bmi, size );
882 bmi_copy->bmiHeader.biHeight /= 2;
883
884 color_bits = (const char*)bmi + size;
885 mask_bits = (const char*)color_bits + color_size;
886
887 alpha = 0;
888 if (is_dib_monochrome( bmi ))
889 {
890 if (!(mask = CreateBitmap( width, height * 2, 1, 1, NULL ))) goto done;
891 color = 0;
892
893 /* copy color data into second half of mask bitmap */
894 SelectObject( hdc, mask );
895 StretchDIBits( hdc, 0, height, width, height,
896 0, 0, bmi_copy->bmiHeader.biWidth, bmi_copy->bmiHeader.biHeight,
897 color_bits, bmi_copy, DIB_RGB_COLORS, SRCCOPY );
898 }
899 else
900 {
901 if (!(mask = CreateBitmap( width, height, 1, 1, NULL ))) goto done;
902 if (!(color = CreateBitmap( width, height, GetDeviceCaps( screen_dc, PLANES ),
903 GetDeviceCaps( screen_dc, BITSPIXEL ), NULL )))
904 {
905 DeleteObject( mask );
906 goto done;
907 }
908 SelectObject( hdc, color );
909 StretchDIBits( hdc, 0, 0, width, height,
910 0, 0, bmi_copy->bmiHeader.biWidth, bmi_copy->bmiHeader.biHeight,
911 color_bits, bmi_copy, DIB_RGB_COLORS, SRCCOPY );
912
913 if (bmi_has_alpha( bmi_copy, color_bits ))
914 alpha = create_alpha_bitmap( color, mask, bmi_copy, color_bits );
915
916 /* convert info to monochrome to copy the mask */
917 bmi_copy->bmiHeader.biBitCount = 1;
918 if (bmi_copy->bmiHeader.biSize != sizeof(BITMAPCOREHEADER))
919 {
920 RGBQUAD *rgb = bmi_copy->bmiColors;
921
922 bmi_copy->bmiHeader.biClrUsed = bmi_copy->bmiHeader.biClrImportant = 2;
923 rgb[0].rgbBlue = rgb[0].rgbGreen = rgb[0].rgbRed = 0x00;
924 rgb[1].rgbBlue = rgb[1].rgbGreen = rgb[1].rgbRed = 0xff;
925 rgb[0].rgbReserved = rgb[1].rgbReserved = 0;
926 }
927 else
928 {
929 RGBTRIPLE *rgb = (RGBTRIPLE *)(((BITMAPCOREHEADER *)bmi_copy) + 1);
930
931 rgb[0].rgbtBlue = rgb[0].rgbtGreen = rgb[0].rgbtRed = 0x00;
932 rgb[1].rgbtBlue = rgb[1].rgbtGreen = rgb[1].rgbtRed = 0xff;
933 }
934 }
935
936 if (mask_size)
937 {
938 SelectObject( hdc, mask );
939 StretchDIBits( hdc, 0, 0, width, height,
940 0, 0, bmi_copy->bmiHeader.biWidth, bmi_copy->bmiHeader.biHeight,
941 mask_bits, bmi_copy, DIB_RGB_COLORS, SRCCOPY );
942 }
943 ret = TRUE;
944
945 done:
946 DeleteDC( hdc );
947 HeapFree( GetProcessHeap(), 0, bmi_copy );
948
949 if (ret)
950 hObj = alloc_icon_handle( FALSE, 1 );
951 if (hObj)
952 {
953 struct cursoricon_object *info = get_icon_ptr( hObj );
954 struct cursoricon_frame *frame;
955
956 info->is_icon = bIcon;
957 info->module = module;
958 info->hotspot = hotspot;
959 frame = get_icon_frame( info, 0 );
960 frame->delay = ~0;
961 frame->width = width;
962 frame->height = height;
963 frame->color = color;
964 frame->mask = mask;
965 frame->alpha = alpha;
966 release_icon_frame( info, 0, frame );
967 if (!IS_INTRESOURCE(resname))
968 {
969 info->resname = HeapAlloc( GetProcessHeap(), 0, (strlenW(resname) + 1) * sizeof(WCHAR) );
970 if (info->resname) strcpyW( info->resname, resname );
971 }
972 else info->resname = MAKEINTRESOURCEW( LOWORD(resname) );
973
974 if (module && (cFlag & LR_SHARED))
975 {
976 info->rsrc = rsrc;
977 list_add_head( &icon_cache, &info->entry );
978 }
979 release_icon_ptr( hObj, info );
980 }
981 else
982 {
983 DeleteObject( color );
984 DeleteObject( alpha );
985 DeleteObject( mask );
986 }
987 return hObj;
988 }
989
990
991 /**********************************************************************
992 * .ANI cursor support
993 */
994 #define RIFF_FOURCC( c0, c1, c2, c3 ) \
995 ( (DWORD)(BYTE)(c0) | ( (DWORD)(BYTE)(c1) << 8 ) | \
996 ( (DWORD)(BYTE)(c2) << 16 ) | ( (DWORD)(BYTE)(c3) << 24 ) )
997
998 #define ANI_RIFF_ID RIFF_FOURCC('R', 'I', 'F', 'F')
999 #define ANI_LIST_ID RIFF_FOURCC('L', 'I', 'S', 'T')
1000 #define ANI_ACON_ID RIFF_FOURCC('A', 'C', 'O', 'N')
1001 #define ANI_anih_ID RIFF_FOURCC('a', 'n', 'i', 'h')
1002 #define ANI_seq__ID RIFF_FOURCC('s', 'e', 'q', ' ')
1003 #define ANI_fram_ID RIFF_FOURCC('f', 'r', 'a', 'm')
1004 #define ANI_rate_ID RIFF_FOURCC('r', 'a', 't', 'e')
1005
1006 #define ANI_FLAG_ICON 0x1
1007 #define ANI_FLAG_SEQUENCE 0x2
1008
1009 typedef struct {
1010 DWORD header_size;
1011 DWORD num_frames;
1012 DWORD num_steps;
1013 DWORD width;
1014 DWORD height;
1015 DWORD bpp;
1016 DWORD num_planes;
1017 DWORD display_rate;
1018 DWORD flags;
1019 } ani_header;
1020
1021 typedef struct {
1022 DWORD data_size;
1023 const unsigned char *data;
1024 } riff_chunk_t;
1025
1026 static void dump_ani_header( const ani_header *header )
1027 {
1028 TRACE(" header size: %d\n", header->header_size);
1029 TRACE(" frames: %d\n", header->num_frames);
1030 TRACE(" steps: %d\n", header->num_steps);
1031 TRACE(" width: %d\n", header->width);
1032 TRACE(" height: %d\n", header->height);
1033 TRACE(" bpp: %d\n", header->bpp);
1034 TRACE(" planes: %d\n", header->num_planes);
1035 TRACE(" display rate: %d\n", header->display_rate);
1036 TRACE(" flags: 0x%08x\n", header->flags);
1037 }
1038
1039
1040 /*
1041 * RIFF:
1042 * DWORD "RIFF"
1043 * DWORD size
1044 * DWORD riff_id
1045 * BYTE[] data
1046 *
1047 * LIST:
1048 * DWORD "LIST"
1049 * DWORD size
1050 * DWORD list_id
1051 * BYTE[] data
1052 *
1053 * CHUNK:
1054 * DWORD chunk_id
1055 * DWORD size
1056 * BYTE[] data
1057 */
1058 static void riff_find_chunk( DWORD chunk_id, DWORD chunk_type, const riff_chunk_t *parent_chunk, riff_chunk_t *chunk )
1059 {
1060 const unsigned char *ptr = parent_chunk->data;
1061 const unsigned char *end = parent_chunk->data + (parent_chunk->data_size - (2 * sizeof(DWORD)));
1062
1063 if (chunk_type == ANI_LIST_ID || chunk_type == ANI_RIFF_ID) end -= sizeof(DWORD);
1064
1065 while (ptr < end)
1066 {
1067 if ((!chunk_type && *(const DWORD *)ptr == chunk_id )
1068 || (chunk_type && *(const DWORD *)ptr == chunk_type && *((const DWORD *)ptr + 2) == chunk_id ))
1069 {
1070 ptr += sizeof(DWORD);
1071 chunk->data_size = (*(const DWORD *)ptr + 1) & ~1;
1072 ptr += sizeof(DWORD);
1073 if (chunk_type == ANI_LIST_ID || chunk_type == ANI_RIFF_ID) ptr += sizeof(DWORD);
1074 chunk->data = ptr;
1075
1076 return;
1077 }
1078
1079 ptr += sizeof(DWORD);
1080 ptr += (*(const DWORD *)ptr + 1) & ~1;
1081 ptr += sizeof(DWORD);
1082 }
1083 }
1084
1085
1086 /*
1087 * .ANI layout:
1088 *
1089 * RIFF:'ACON' RIFF chunk
1090 * |- CHUNK:'anih' Header
1091 * |- CHUNK:'seq ' Sequence information (optional)
1092 * \- LIST:'fram' Frame list
1093 * |- CHUNK:icon Cursor frames
1094 * |- CHUNK:icon
1095 * |- ...
1096 * \- CHUNK:icon
1097 */
1098 static HCURSOR CURSORICON_CreateIconFromANI( const BYTE *bits, DWORD bits_size, INT width, INT height,
1099 INT depth, BOOL is_icon, UINT loadflags )
1100 {
1101 struct animated_cursoricon_object *ani_icon_data;
1102 struct cursoricon_object *info;
1103 DWORD *frame_rates = NULL;
1104 DWORD *frame_seq = NULL;
1105 ani_header header = {0};
1106 BOOL use_seq = FALSE;
1107 HCURSOR cursor = 0;
1108 UINT i;
1109 BOOL error = FALSE;
1110 HICON *frames;
1111
1112 riff_chunk_t root_chunk = { bits_size, bits };
1113 riff_chunk_t ACON_chunk = {0};
1114 riff_chunk_t anih_chunk = {0};
1115 riff_chunk_t fram_chunk = {0};
1116 riff_chunk_t rate_chunk = {0};
1117 riff_chunk_t seq_chunk = {0};
1118 const unsigned char *icon_chunk;
1119 const unsigned char *icon_data;
1120
1121 TRACE("bits %p, bits_size %d\n", bits, bits_size);
1122
1123 riff_find_chunk( ANI_ACON_ID, ANI_RIFF_ID, &root_chunk, &ACON_chunk );
1124 if (!ACON_chunk.data)
1125 {
1126 ERR("Failed to get root chunk.\n");
1127 return 0;
1128 }
1129
1130 riff_find_chunk( ANI_anih_ID, 0, &ACON_chunk, &anih_chunk );
1131 if (!anih_chunk.data)
1132 {
1133 ERR("Failed to get 'anih' chunk.\n");
1134 return 0;
1135 }
1136 memcpy( &header, anih_chunk.data, sizeof(header) );
1137 dump_ani_header( &header );
1138
1139 if (!(header.flags & ANI_FLAG_ICON))
1140 {
1141 FIXME("Raw animated icon/cursor data is not currently supported.\n");
1142 return 0;
1143 }
1144
1145 if (header.flags & ANI_FLAG_SEQUENCE)
1146 {
1147 riff_find_chunk( ANI_seq__ID, 0, &ACON_chunk, &seq_chunk );
1148 if (seq_chunk.data)
1149 {
1150 frame_seq = (DWORD *) seq_chunk.data;
1151 use_seq = TRUE;
1152 }
1153 else
1154 {
1155 FIXME("Sequence data expected but not found, assuming steps == frames.\n");
1156 header.num_steps = header.num_frames;
1157 }
1158 }
1159
1160 riff_find_chunk( ANI_rate_ID, 0, &ACON_chunk, &rate_chunk );
1161 if (rate_chunk.data)
1162 frame_rates = (DWORD *) rate_chunk.data;
1163
1164 riff_find_chunk( ANI_fram_ID, ANI_LIST_ID, &ACON_chunk, &fram_chunk );
1165 if (!fram_chunk.data)
1166 {
1167 ERR("Failed to get icon list.\n");
1168 return 0;
1169 }
1170
1171 cursor = alloc_icon_handle( TRUE, header.num_steps );
1172 if (!cursor) return 0;
1173 frames = HeapAlloc( GetProcessHeap(), 0, sizeof(*frames) * header.num_frames );
1174 if (!frames)
1175 {
1176 free_icon_handle( cursor );
1177 return 0;
1178 }
1179
1180 info = get_icon_ptr( cursor );
1181 ani_icon_data = (struct animated_cursoricon_object *) info;
1182 info->is_icon = is_icon;
1183 ani_icon_data->num_frames = header.num_frames;
1184
1185 /* The .ANI stores the display rate in jiffies (1/60s) */
1186 info->delay = header.display_rate;
1187
1188 icon_chunk = fram_chunk.data;
1189 icon_data = fram_chunk.data + (2 * sizeof(DWORD));
1190 for (i=0; i<header.num_frames; i++)
1191 {
1192 const DWORD chunk_size = *(const DWORD *)(icon_chunk + sizeof(DWORD));
1193 const CURSORICONFILEDIRENTRY *entry;
1194 INT frameWidth, frameHeight;
1195 const BITMAPINFO *bmi;
1196
1197 entry = CURSORICON_FindBestIconFile((const CURSORICONFILEDIR *) icon_data,
1198 bits + bits_size - icon_data,
1199 width, height, depth, loadflags );
1200
1201 info->hotspot.x = entry->xHotspot;
1202 info->hotspot.y = entry->yHotspot;
1203 if (!header.width || !header.height)
1204 {
1205 frameWidth = entry->bWidth;
1206 frameHeight = entry->bHeight;
1207 }
1208 else
1209 {
1210 frameWidth = header.width;
1211 frameHeight = header.height;
1212 }
1213
1214 frames[i] = NULL;
1215 if (entry->dwDIBOffset < bits + bits_size - icon_data)
1216 {
1217 bmi = (const BITMAPINFO *) (icon_data + entry->dwDIBOffset);
1218 /* Grab a frame from the animation */
1219 frames[i] = create_icon_from_bmi( bmi, bits + bits_size - (const BYTE *)bmi,
1220 NULL, NULL, NULL, info->hotspot,
1221 is_icon, frameWidth, frameHeight, loadflags );
1222 }
1223
1224 if (!frames[i])
1225 {
1226 FIXME_(cursor)("failed to convert animated cursor frame.\n");
1227 error = TRUE;
1228 if (i == 0)
1229 {
1230 FIXME_(cursor)("Completely failed to create animated cursor!\n");
1231 ani_icon_data->num_frames = 0;
1232 release_icon_ptr( cursor, info );
1233 free_icon_handle( cursor );
1234 HeapFree( GetProcessHeap(), 0, frames );
1235 return 0;
1236 }
1237 break;
1238 }
1239
1240 /* Advance to the next chunk */
1241 icon_chunk += chunk_size + (2 * sizeof(DWORD));
1242 icon_data = icon_chunk + (2 * sizeof(DWORD));
1243 }
1244
1245 /* There was an error but we at least decoded the first frame, so just use that frame */
1246 if (error)
1247 {
1248 FIXME_(cursor)("Error creating animated cursor, only using first frame!\n");
1249 for (i=1; i<ani_icon_data->num_frames; i++)
1250 free_icon_handle( ani_icon_data->frames[i] );
1251 use_seq = FALSE;
1252 info->delay = 0;
1253 ani_icon_data->num_steps = 1;
1254 ani_icon_data->num_frames = 1;
1255 }
1256
1257 /* Setup the animated frames in the correct sequence */
1258 for (i=0; i<ani_icon_data->num_steps; i++)
1259 {
1260 DWORD frame_id = use_seq ? frame_seq[i] : i;
1261 struct cursoricon_frame *frame;
1262
1263 if (frame_id >= ani_icon_data->num_frames)
1264 {
1265 frame_id = ani_icon_data->num_frames-1;
1266 ERR_(cursor)("Sequence indicates frame past end of list, corrupt?\n");
1267 }
1268 ani_icon_data->frames[i] = frames[frame_id];
1269 frame = get_icon_frame( info, i );
1270 if (frame_rates)
1271 frame->delay = frame_rates[i];
1272 else
1273 frame->delay = ~0;
1274 release_icon_frame( info, i, frame );
1275 }
1276
1277 HeapFree( GetProcessHeap(), 0, frames );
1278 release_icon_ptr( cursor, info );
1279
1280 return cursor;
1281 }
1282
1283
1284 /**********************************************************************
1285 * CreateIconFromResourceEx (USER32.@)
1286 *
1287 * FIXME: Convert to mono when cFlag is LR_MONOCHROME.
1288 */
1289 HICON WINAPI CreateIconFromResourceEx( LPBYTE bits, UINT cbSize,
1290 BOOL bIcon, DWORD dwVersion,
1291 INT width, INT height,
1292 UINT cFlag )
1293 {
1294 POINT hotspot;
1295 const BITMAPINFO *bmi;
1296
1297 TRACE_(cursor)("%p (%u bytes), ver %08x, %ix%i %s %s\n",
1298 bits, cbSize, dwVersion, width, height,
1299 bIcon ? "icon" : "cursor", (cFlag & LR_MONOCHROME) ? "mono" : "" );
1300
1301 if (!bits) return 0;
1302
1303 if (dwVersion == 0x00020000)
1304 {
1305 FIXME_(cursor)("\t2.xx resources are not supported\n");
1306 return 0;
1307 }
1308
1309 /* Check if the resource is an animated icon/cursor */
1310 if (!memcmp(bits, "RIFF", 4))
1311 return CURSORICON_CreateIconFromANI( bits, cbSize, width, height,
1312 0 /* default depth */, bIcon, cFlag );
1313
1314 if (bIcon)
1315 {
1316 hotspot.x = width / 2;
1317 hotspot.y = height / 2;
1318 bmi = (BITMAPINFO *)bits;
1319 }
1320 else /* get the hotspot */
1321 {
1322 const SHORT *pt = (const SHORT *)bits;
1323 hotspot.x = pt[0];
1324 hotspot.y = pt[1];
1325 bmi = (const BITMAPINFO *)(pt + 2);
1326 cbSize -= 2 * sizeof(*pt);
1327 }
1328
1329 return create_icon_from_bmi( bmi, cbSize, NULL, NULL, NULL, hotspot, bIcon, width, height, cFlag );
1330 }
1331
1332
1333 /**********************************************************************
1334 * CreateIconFromResource (USER32.@)
1335 */
1336 HICON WINAPI CreateIconFromResource( LPBYTE bits, UINT cbSize,
1337 BOOL bIcon, DWORD dwVersion)
1338 {
1339 return CreateIconFromResourceEx( bits, cbSize, bIcon, dwVersion, 0,0,0);
1340 }
1341
1342
1343 static HICON CURSORICON_LoadFromFile( LPCWSTR filename,
1344 INT width, INT height, INT depth,
1345 BOOL fCursor, UINT loadflags)
1346 {
1347 const CURSORICONFILEDIRENTRY *entry;
1348 const CURSORICONFILEDIR *dir;
1349 DWORD filesize = 0;
1350 HICON hIcon = 0;
1351 const BYTE *bits;
1352 POINT hotspot;
1353
1354 TRACE("loading %s\n", debugstr_w( filename ));
1355
1356 bits = map_fileW( filename, &filesize );
1357 if (!bits)
1358 return hIcon;
1359
1360 /* Check for .ani. */
1361 if (memcmp( bits, "RIFF", 4 ) == 0)
1362 {
1363 hIcon = CURSORICON_CreateIconFromANI( bits, filesize, width, height, depth, !fCursor, loadflags );
1364 goto end;
1365 }
1366
1367 dir = (const CURSORICONFILEDIR*) bits;
1368 if ( filesize < FIELD_OFFSET( CURSORICONFILEDIR, idEntries[dir->idCount] ))
1369 goto end;
1370
1371 if ( fCursor )
1372 entry = CURSORICON_FindBestCursorFile( dir, filesize, width, height, depth, loadflags );
1373 else
1374 entry = CURSORICON_FindBestIconFile( dir, filesize, width, height, depth, loadflags );
1375
1376 if ( !entry )
1377 goto end;
1378
1379 /* check that we don't run off the end of the file */
1380 if ( entry->dwDIBOffset > filesize )
1381 goto end;
1382 if ( entry->dwDIBOffset + entry->dwDIBSize > filesize )
1383 goto end;
1384
1385 hotspot.x = entry->xHotspot;
1386 hotspot.y = entry->yHotspot;
1387 hIcon = create_icon_from_bmi( (const BITMAPINFO *)&bits[entry->dwDIBOffset], filesize - entry->dwDIBOffset,
1388 NULL, NULL, NULL, hotspot, !fCursor, width, height, loadflags );
1389 end:
1390 TRACE("loaded %s -> %p\n", debugstr_w( filename ), hIcon );
1391 UnmapViewOfFile( bits );
1392 return hIcon;
1393 }
1394
1395 /**********************************************************************
1396 * CURSORICON_Load
1397 *
1398 * Load a cursor or icon from resource or file.
1399 */
1400 static HICON CURSORICON_Load(HINSTANCE hInstance, LPCWSTR name,
1401 INT width, INT height, INT depth,
1402 BOOL fCursor, UINT loadflags)
1403 {
1404 HANDLE handle = 0;
1405 HICON hIcon = 0;
1406 HRSRC hRsrc;
1407 DWORD size;
1408 const CURSORICONDIR *dir;
1409 const CURSORICONDIRENTRY *dirEntry;
1410 const BYTE *bits;
1411 WORD wResId;
1412 POINT hotspot;
1413
1414 TRACE("%p, %s, %dx%d, depth %d, fCursor %d, flags 0x%04x\n",
1415 hInstance, debugstr_w(name), width, height, depth, fCursor, loadflags);
1416
1417 if ( loadflags & LR_LOADFROMFILE ) /* Load from file */
1418 return CURSORICON_LoadFromFile( name, width, height, depth, fCursor, loadflags );
1419
1420 if (!hInstance) hInstance = user32_module; /* Load OEM cursor/icon */
1421
1422 /* don't cache 16-bit instances (FIXME: should never get 16-bit instances in the first place) */
1423 if ((ULONG_PTR)hInstance >> 16 == 0) loadflags &= ~LR_SHARED;
1424
1425 /* Get directory resource ID */
1426
1427 if (!(hRsrc = FindResourceW( hInstance, name,
1428 (LPWSTR)(fCursor ? RT_GROUP_CURSOR : RT_GROUP_ICON) )))
1429 {
1430 /* try animated resource */
1431 if (!(hRsrc = FindResourceW( hInstance, name,
1432 (LPWSTR)(fCursor ? RT_ANICURSOR : RT_ANIICON) ))) return 0;
1433 if (!(handle = LoadResource( hInstance, hRsrc ))) return 0;
1434 bits = LockResource( handle );
1435 return CURSORICON_CreateIconFromANI( bits, SizeofResource( hInstance, handle ),
1436 width, height, depth, !fCursor, loadflags );
1437 }
1438
1439 /* Find the best entry in the directory */
1440
1441 if (!(handle = LoadResource( hInstance, hRsrc ))) return 0;
1442 if (!(dir = LockResource( handle ))) return 0;
1443 size = SizeofResource( hInstance, hRsrc );
1444 if (fCursor)
1445 dirEntry = CURSORICON_FindBestCursorRes( dir, size, width, height, depth, loadflags );
1446 else
1447 dirEntry = CURSORICON_FindBestIconRes( dir, size, width, height, depth, loadflags );
1448 if (!dirEntry) return 0;
1449 wResId = dirEntry->wResId;
1450 FreeResource( handle );
1451
1452 /* Load the resource */
1453
1454 if (!(hRsrc = FindResourceW(hInstance,MAKEINTRESOURCEW(wResId),
1455 (LPWSTR)(fCursor ? RT_CURSOR : RT_ICON) ))) return 0;
1456
1457 /* If shared icon, check whether it was already loaded */
1458 if (loadflags & LR_SHARED)
1459 {
1460 struct cursoricon_object *ptr;
1461
1462 USER_Lock();
1463 LIST_FOR_EACH_ENTRY( ptr, &icon_cache, struct cursoricon_object, entry )
1464 {
1465 if (ptr->module != hInstance) continue;
1466 if (ptr->rsrc != hRsrc) continue;
1467 hIcon = ptr->obj.handle;
1468 break;
1469 }
1470 USER_Unlock();
1471 if (hIcon) return hIcon;
1472 }
1473
1474 if (!(handle = LoadResource( hInstance, hRsrc ))) return 0;
1475 size = SizeofResource( hInstance, hRsrc );
1476 bits = LockResource( handle );
1477
1478 if (!fCursor)
1479 {
1480 hotspot.x = width / 2;
1481 hotspot.y = height / 2;
1482 }
1483 else /* get the hotspot */
1484 {
1485 const SHORT *pt = (const SHORT *)bits;
1486 hotspot.x = pt[0];
1487 hotspot.y = pt[1];
1488 bits += 2 * sizeof(SHORT);
1489 size -= 2 * sizeof(SHORT);
1490 }
1491 hIcon = create_icon_from_bmi( (const BITMAPINFO *)bits, size, hInstance, name, hRsrc,
1492 hotspot, !fCursor, width, height, loadflags );
1493 FreeResource( handle );
1494 return hIcon;
1495 }
1496
1497
1498 /***********************************************************************
1499 * CreateCursor (USER32.@)
1500 */
1501 HCURSOR WINAPI CreateCursor( HINSTANCE hInstance,
1502 INT xHotSpot, INT yHotSpot,
1503 INT nWidth, INT nHeight,
1504 LPCVOID lpANDbits, LPCVOID lpXORbits )
1505 {
1506 ICONINFO info;
1507 HCURSOR hCursor;
1508
1509 TRACE_(cursor)("%dx%d spot=%d,%d xor=%p and=%p\n",
1510 nWidth, nHeight, xHotSpot, yHotSpot, lpXORbits, lpANDbits);
1511
1512 info.fIcon = FALSE;
1513 info.xHotspot = xHotSpot;
1514 info.yHotspot = yHotSpot;
1515 info.hbmMask = CreateBitmap( nWidth, nHeight, 1, 1, lpANDbits );
1516 info.hbmColor = CreateBitmap( nWidth, nHeight, 1, 1, lpXORbits );
1517 hCursor = CreateIconIndirect( &info );
1518 DeleteObject( info.hbmMask );
1519 DeleteObject( info.hbmColor );
1520 return hCursor;
1521 }
1522
1523
1524 /***********************************************************************
1525 * CreateIcon (USER32.@)
1526 *
1527 * Creates an icon based on the specified bitmaps. The bitmaps must be
1528 * provided in a device dependent format and will be resized to
1529 * (SM_CXICON,SM_CYICON) and depth converted to match the screen's color
1530 * depth. The provided bitmaps must be top-down bitmaps.
1531 * Although Windows does not support 15bpp(*) this API must support it
1532 * for Winelib applications.
1533 *
1534 * (*) Windows does not support 15bpp but it supports the 555 RGB 16bpp
1535 * format!
1536 *
1537 * RETURNS
1538 * Success: handle to an icon
1539 * Failure: NULL
1540 *
1541 * FIXME: Do we need to resize the bitmaps?
1542 */
1543 HICON WINAPI CreateIcon(
1544 HINSTANCE hInstance, /* [in] the application's hInstance */
1545 INT nWidth, /* [in] the width of the provided bitmaps */
1546 INT nHeight, /* [in] the height of the provided bitmaps */
1547 BYTE bPlanes, /* [in] the number of planes in the provided bitmaps */
1548 BYTE bBitsPixel, /* [in] the number of bits per pixel of the lpXORbits bitmap */
1549 LPCVOID lpANDbits, /* [in] a monochrome bitmap representing the icon's mask */
1550 LPCVOID lpXORbits) /* [in] the icon's 'color' bitmap */
1551 {
1552 ICONINFO iinfo;
1553 HICON hIcon;
1554
1555 TRACE_(icon)("%dx%d, planes %d, bpp %d, xor %p, and %p\n",
1556 nWidth, nHeight, bPlanes, bBitsPixel, lpXORbits, lpANDbits);
1557
1558 iinfo.fIcon = TRUE;
1559 iinfo.xHotspot = nWidth / 2;
1560 iinfo.yHotspot = nHeight / 2;
1561 iinfo.hbmMask = CreateBitmap( nWidth, nHeight, 1, 1, lpANDbits );
1562 iinfo.hbmColor = CreateBitmap( nWidth, nHeight, bPlanes, bBitsPixel, lpXORbits );
1563
1564 hIcon = CreateIconIndirect( &iinfo );
1565
1566 DeleteObject( iinfo.hbmMask );
1567 DeleteObject( iinfo.hbmColor );
1568
1569 return hIcon;
1570 }
1571
1572
1573 /***********************************************************************
1574 * CopyIcon (USER32.@)
1575 */
1576 HICON WINAPI CopyIcon( HICON hIcon )
1577 {
1578 struct cursoricon_object *ptrOld, *ptrNew;
1579 HICON hNew;
1580
1581 if (!(ptrOld = get_icon_ptr( hIcon )))
1582 {
1583 SetLastError( ERROR_INVALID_CURSOR_HANDLE );
1584 return 0;
1585 }
1586 if ((hNew = alloc_icon_handle( FALSE, 1 )))
1587 {
1588 struct cursoricon_frame *frameOld, *frameNew;
1589
1590 ptrNew = get_icon_ptr( hNew );
1591 ptrNew->is_icon = ptrOld->is_icon;
1592 ptrNew->hotspot = ptrOld->hotspot;
1593 if (!(frameOld = get_icon_frame( ptrOld, 0 )))
1594 {
1595 release_icon_ptr( hIcon, ptrOld );
1596 SetLastError( ERROR_INVALID_CURSOR_HANDLE );
1597 return 0;
1598 }
1599 if (!(frameNew = get_icon_frame( ptrNew, 0 )))
1600 {
1601 release_icon_frame( ptrOld, 0, frameOld );
1602 release_icon_ptr( hIcon, ptrOld );
1603 SetLastError( ERROR_INVALID_CURSOR_HANDLE );
1604 return 0;
1605 }
1606 frameNew->delay = 0;
1607 frameNew->width = frameOld->width;
1608 frameNew->height = frameOld->height;
1609 frameNew->mask = copy_bitmap( frameOld->mask );
1610 frameNew->color = copy_bitmap( frameOld->color );
1611 frameNew->alpha = copy_bitmap( frameOld->alpha );
1612 release_icon_frame( ptrOld, 0, frameOld );
1613 release_icon_frame( ptrNew, 0, frameNew );
1614 release_icon_ptr( hNew, ptrNew );
1615 }
1616 release_icon_ptr( hIcon, ptrOld );
1617 return hNew;
1618 }
1619
1620
1621 /***********************************************************************
1622 * DestroyIcon (USER32.@)
1623 */
1624 BOOL WINAPI DestroyIcon( HICON hIcon )
1625 {
1626 BOOL ret = FALSE;
1627 struct cursoricon_object *obj = get_icon_ptr( hIcon );
1628
1629 TRACE_(icon)("%p\n", hIcon );
1630
1631 if (obj)
1632 {
1633 BOOL shared = (obj->rsrc != NULL);
1634 release_icon_ptr( hIcon, obj );
1635 ret = (GetCursor() != hIcon);
1636 if (!shared) free_icon_handle( hIcon );
1637 }
1638 return ret;
1639 }
1640
1641
1642 /***********************************************************************
1643 * DestroyCursor (USER32.@)
1644 */
1645 BOOL WINAPI DestroyCursor( HCURSOR hCursor )
1646 {
1647 return DestroyIcon( hCursor );
1648 }
1649
1650 /***********************************************************************
1651 * DrawIcon (USER32.@)
1652 */
1653 BOOL WINAPI DrawIcon( HDC hdc, INT x, INT y, HICON hIcon )
1654 {
1655 return DrawIconEx( hdc, x, y, hIcon, 0, 0, 0, 0, DI_NORMAL | DI_COMPAT | DI_DEFAULTSIZE );
1656 }
1657
1658 /***********************************************************************
1659 * SetCursor (USER32.@)
1660 *
1661 * Set the cursor shape.
1662 *
1663 * RETURNS
1664 * A handle to the previous cursor shape.
1665 */
1666 HCURSOR WINAPI DECLSPEC_HOTPATCH SetCursor( HCURSOR hCursor /* [in] Handle of cursor to show */ )
1667 {
1668 struct cursoricon_object *obj;
1669 HCURSOR hOldCursor;
1670 int show_count;
1671 BOOL ret;
1672
1673 TRACE("%p\n", hCursor);
1674
1675 SERVER_START_REQ( set_cursor )
1676 {
1677 req->flags = SET_CURSOR_HANDLE;
1678 req->handle = wine_server_user_handle( hCursor );
1679 if ((ret = !wine_server_call_err( req )))
1680 {
1681 hOldCursor = wine_server_ptr_handle( reply->prev_handle );
1682 show_count = reply->prev_count;
1683 }
1684 }
1685 SERVER_END_REQ;
1686
1687 if (!ret) return 0;
1688 USER_Driver->pSetCursor( show_count >= 0 ? hCursor : 0 );
1689
1690 if (!(obj = get_icon_ptr( hOldCursor ))) return 0;
1691 release_icon_ptr( hOldCursor, obj );
1692 return hOldCursor;
1693 }
1694
1695 /***********************************************************************
1696 * ShowCursor (USER32.@)
1697 */
1698 INT WINAPI DECLSPEC_HOTPATCH ShowCursor( BOOL bShow )
1699 {
1700 HCURSOR cursor;
1701 int increment = bShow ? 1 : -1;
1702 int count;
1703
1704 SERVER_START_REQ( set_cursor )
1705 {
1706 req->flags = SET_CURSOR_COUNT;
1707 req->show_count = increment;
1708 wine_server_call( req );
1709 cursor = wine_server_ptr_handle( reply->prev_handle );
1710 count = reply->prev_count + increment;
1711 }
1712 SERVER_END_REQ;
1713
1714 TRACE("%d, count=%d\n", bShow, count );
1715
1716 if (bShow && !count) USER_Driver->pSetCursor( cursor );
1717 else if (!bShow && count == -1) USER_Driver->pSetCursor( 0 );
1718
1719 return count;
1720 }
1721
1722 /***********************************************************************
1723 * GetCursor (USER32.@)
1724 */
1725 HCURSOR WINAPI GetCursor(void)
1726 {
1727 HCURSOR ret;
1728
1729 SERVER_START_REQ( set_cursor )
1730 {
1731 req->flags = 0;
1732 wine_server_call( req );
1733 ret = wine_server_ptr_handle( reply->prev_handle );
1734 }
1735 SERVER_END_REQ;
1736 return ret;
1737 }
1738
1739
1740 /***********************************************************************
1741 * ClipCursor (USER32.@)
1742 */
1743 BOOL WINAPI DECLSPEC_HOTPATCH ClipCursor( const RECT *rect )
1744 {
1745 BOOL ret;
1746 RECT new_rect;
1747
1748 TRACE( "Clipping to %s\n", wine_dbgstr_rect(rect) );
1749
1750 if (rect && (rect->left > rect->right || rect->top > rect->bottom)) return FALSE;
1751
1752 SERVER_START_REQ( set_cursor )
1753 {
1754 req->clip_msg = WM_WINE_CLIPCURSOR;
1755 if (rect)
1756 {
1757 req->flags = SET_CURSOR_CLIP;
1758 req->clip.left = rect->left;
1759 req->clip.top = rect->top;
1760 req->clip.right = rect->right;
1761 req->clip.bottom = rect->bottom;
1762 }
1763 else req->flags = SET_CURSOR_NOCLIP;
1764
1765 if ((ret = !wine_server_call( req )))
1766 {
1767 new_rect.left = reply->new_clip.left;
1768 new_rect.top = reply->new_clip.top;
1769 new_rect.right = reply->new_clip.right;
1770 new_rect.bottom = reply->new_clip.bottom;
1771 }
1772 }
1773 SERVER_END_REQ;
1774 if (ret) USER_Driver->pClipCursor( &new_rect );
1775 return ret;
1776 }
1777
1778
1779 /***********************************************************************
1780 * GetClipCursor (USER32.@)
1781 */
1782 BOOL WINAPI DECLSPEC_HOTPATCH GetClipCursor( RECT *rect )
1783 {
1784 BOOL ret;
1785
1786 if (!rect) return FALSE;
1787
1788 SERVER_START_REQ( set_cursor )
1789 {
1790 req->flags = 0;
1791 if ((ret = !wine_server_call( req )))
1792 {
1793 rect->left = reply->new_clip.left;
1794 rect->top = reply->new_clip.top;
1795 rect->right = reply->new_clip.right;
1796 rect->bottom = reply->new_clip.bottom;
1797 }
1798 }
1799 SERVER_END_REQ;
1800 return ret;
1801 }
1802
1803
1804 /***********************************************************************
1805 * SetSystemCursor (USER32.@)
1806 */
1807 BOOL WINAPI SetSystemCursor(HCURSOR hcur, DWORD id)
1808 {
1809 FIXME("(%p,%08x),stub!\n", hcur, id);
1810 return TRUE;
1811 }
1812
1813
1814 /**********************************************************************
1815 * LookupIconIdFromDirectoryEx (USER32.@)
1816 */
1817 INT WINAPI LookupIconIdFromDirectoryEx( LPBYTE xdir, BOOL bIcon,
1818 INT width, INT height, UINT cFlag )
1819 {
1820 const CURSORICONDIR *dir = (const CURSORICONDIR*)xdir;
1821 UINT retVal = 0;
1822 if( dir && !dir->idReserved && (dir->idType & 3) )
1823 {
1824 const CURSORICONDIRENTRY* entry;
1825
1826 const HDC hdc = GetDC(0);
1827 const int depth = (cFlag & LR_MONOCHROME) ?
1828 1 : GetDeviceCaps(hdc, BITSPIXEL);
1829 ReleaseDC(0, hdc);
1830
1831 if( bIcon )
1832 entry = CURSORICON_FindBestIconRes( dir, ~0u, width, height, depth, LR_DEFAULTSIZE );
1833 else
1834 entry = CURSORICON_FindBestCursorRes( dir, ~0u, width, height, depth, LR_DEFAULTSIZE );
1835
1836 if( entry ) retVal = entry->wResId;
1837 }
1838 else WARN_(cursor)("invalid resource directory\n");
1839 return retVal;
1840 }
1841
1842 /**********************************************************************
1843 * LookupIconIdFromDirectory (USER32.@)
1844 */
1845 INT WINAPI LookupIconIdFromDirectory( LPBYTE dir, BOOL bIcon )
1846 {
1847 return LookupIconIdFromDirectoryEx( dir, bIcon, 0, 0, bIcon ? 0 : LR_MONOCHROME );
1848 }
1849
1850 /***********************************************************************
1851 * LoadCursorW (USER32.@)
1852 */
1853 HCURSOR WINAPI LoadCursorW(HINSTANCE hInstance, LPCWSTR name)
1854 {
1855 TRACE("%p, %s\n", hInstance, debugstr_w(name));
1856
1857 return LoadImageW( hInstance, name, IMAGE_CURSOR, 0, 0,
1858 LR_SHARED | LR_DEFAULTSIZE );
1859 }
1860
1861 /***********************************************************************
1862 * LoadCursorA (USER32.@)
1863 */
1864 HCURSOR WINAPI LoadCursorA(HINSTANCE hInstance, LPCSTR name)
1865 {
1866 TRACE("%p, %s\n", hInstance, debugstr_a(name));
1867
1868 return LoadImageA( hInstance, name, IMAGE_CURSOR, 0, 0,
1869 LR_SHARED | LR_DEFAULTSIZE );
1870 }
1871
1872 /***********************************************************************
1873 * LoadCursorFromFileW (USER32.@)
1874 */
1875 HCURSOR WINAPI LoadCursorFromFileW (LPCWSTR name)
1876 {
1877 TRACE("%s\n", debugstr_w(name));
1878
1879 return LoadImageW( 0, name, IMAGE_CURSOR, 0, 0,
1880 LR_LOADFROMFILE | LR_DEFAULTSIZE );
1881 }
1882
1883 /***********************************************************************
1884 * LoadCursorFromFileA (USER32.@)
1885 */
1886 HCURSOR WINAPI LoadCursorFromFileA (LPCSTR name)
1887 {
1888 TRACE("%s\n", debugstr_a(name));
1889
1890 return LoadImageA( 0, name, IMAGE_CURSOR, 0, 0,
1891 LR_LOADFROMFILE | LR_DEFAULTSIZE );
1892 }
1893
1894 /***********************************************************************
1895 * LoadIconW (USER32.@)
1896 */
1897 HICON WINAPI LoadIconW(HINSTANCE hInstance, LPCWSTR name)
1898 {
1899 TRACE("%p, %s\n", hInstance, debugstr_w(name));
1900
1901 return LoadImageW( hInstance, name, IMAGE_ICON, 0, 0,
1902 LR_SHARED | LR_DEFAULTSIZE );
1903 }
1904
1905 /***********************************************************************
1906 * LoadIconA (USER32.@)
1907 */
1908 HICON WINAPI LoadIconA(HINSTANCE hInstance, LPCSTR name)
1909 {
1910 TRACE("%p, %s\n", hInstance, debugstr_a(name));
1911
1912 return LoadImageA( hInstance, name, IMAGE_ICON, 0, 0,
1913 LR_SHARED | LR_DEFAULTSIZE );
1914 }
1915
1916 /**********************************************************************
1917 * GetCursorFrameInfo (USER32.@)
1918 *
1919 * NOTES
1920 * So far no use has been found for the second parameter, it is currently presumed
1921 * that this parameter is reserved for future use.
1922 *
1923 * PARAMS
1924 * hCursor [I] Handle to cursor for which to retrieve information
1925 * reserved [I] No purpose has been found for this parameter (may be NULL)
1926 * istep [I] The step of the cursor for which to retrieve information
1927 * rate_jiffies [O] Pointer to DWORD that receives the frame-specific delay (cannot be NULL)
1928 * num_steps [O] Pointer to DWORD that receives the number of steps in the cursor (cannot be NULL)
1929 *
1930 * RETURNS
1931 * Success: Handle to a frame of the cursor (specified by istep)
1932 * Failure: NULL cursor (0)
1933 */
1934 HCURSOR WINAPI GetCursorFrameInfo(HCURSOR hCursor, DWORD reserved, DWORD istep, DWORD *rate_jiffies, DWORD *num_steps)
1935 {
1936 struct cursoricon_object *ptr;
1937 HCURSOR ret = 0;
1938 UINT icon_steps;
1939
1940 if (rate_jiffies == NULL || num_steps == NULL) return 0;
1941
1942 if (!(ptr = get_icon_ptr( hCursor ))) return 0;
1943
1944 TRACE("%p => %d %d %p %p\n", hCursor, reserved, istep, rate_jiffies, num_steps);
1945 if (reserved != 0)
1946 FIXME("Second parameter non-zero (%d), please report this!\n", reserved);
1947
1948 icon_steps = get_icon_steps(ptr);
1949 if (istep < icon_steps || !ptr->is_ani)
1950 {
1951 struct animated_cursoricon_object *ani_icon_data = (struct animated_cursoricon_object *) ptr;
1952 UINT icon_frames = 1;
1953
1954 if (ptr->is_ani)
1955 icon_frames = ani_icon_data->num_frames;
1956 if (ptr->is_ani && icon_frames > 1)
1957 ret = ani_icon_data->frames[istep];
1958 else
1959 ret = hCursor;
1960 if (icon_frames == 1)
1961 {
1962 *rate_jiffies = 0;
1963 *num_steps = 1;
1964 }
1965 else if (icon_steps == 1)
1966 {
1967 *num_steps = ~0;
1968 *rate_jiffies = ptr->delay;
1969 }
1970 else if (istep < icon_steps)
1971 {
1972 struct cursoricon_frame *frame;
1973
1974 *num_steps = icon_steps;
1975 frame = get_icon_frame( ptr, istep );
1976 if (get_icon_steps(ptr) == 1)
1977 *num_steps = ~0;
1978 else
1979 *num_steps = get_icon_steps(ptr);
1980 /* If this specific frame does not have a delay then use the global delay */
1981 if (frame->delay == ~0)
1982 *rate_jiffies = ptr->delay;
1983 else
1984 *rate_jiffies = frame->delay;
1985 release_icon_frame( ptr, istep, frame );
1986 }
1987 }
1988
1989 release_icon_ptr( hCursor, ptr );
1990
1991 return ret;
1992 }
1993
1994 /**********************************************************************
1995 * GetIconInfo (USER32.@)
1996 */
1997 BOOL WINAPI GetIconInfo(HICON hIcon, PICONINFO iconinfo)
1998 {
1999 ICONINFOEXW infoW;
2000
2001 infoW.cbSize = sizeof(infoW);
2002 if (!GetIconInfoExW( hIcon, &infoW )) return FALSE;
2003 iconinfo->fIcon = infoW.fIcon;
2004 iconinfo->xHotspot = infoW.xHotspot;
2005 iconinfo->yHotspot = infoW.yHotspot;
2006 iconinfo->hbmColor = infoW.hbmColor;
2007 iconinfo->hbmMask = infoW.hbmMask;
2008 return TRUE;
2009 }
2010
2011 /**********************************************************************
2012 * GetIconInfoExA (USER32.@)
2013 */
2014 BOOL WINAPI GetIconInfoExA( HICON icon, ICONINFOEXA *info )
2015 {
2016 ICONINFOEXW infoW;
2017
2018 if (info->cbSize != sizeof(*info))
2019 {
2020 SetLastError( ERROR_INVALID_PARAMETER );
2021 return FALSE;
2022 }
2023 infoW.cbSize = sizeof(infoW);
2024 if (!GetIconInfoExW( icon, &infoW )) return FALSE;
2025 info->fIcon = infoW.fIcon;
2026 info->xHotspot = infoW.xHotspot;
2027 info->yHotspot = infoW.yHotspot;
2028 info->hbmColor = infoW.hbmColor;
2029 info->hbmMask = infoW.hbmMask;
2030 info->wResID = infoW.wResID;
2031 WideCharToMultiByte( CP_ACP, 0, infoW.szModName, -1, info->szModName, MAX_PATH, NULL, NULL );
2032 WideCharToMultiByte( CP_ACP, 0, infoW.szResName, -1, info->szResName, MAX_PATH, NULL, NULL );
2033 return TRUE;
2034 }
2035
2036 /**********************************************************************
2037 * GetIconInfoExW (USER32.@)
2038 */
2039 BOOL WINAPI GetIconInfoExW( HICON icon, ICONINFOEXW *info )
2040 {
2041 struct cursoricon_frame *frame;
2042 struct cursoricon_object *ptr;
2043 HMODULE module;
2044 BOOL ret = TRUE;
2045
2046 if (info->cbSize != sizeof(*info))
2047 {
2048 SetLastError( ERROR_INVALID_PARAMETER );
2049 return FALSE;
2050 }
2051 if (!(ptr = get_icon_ptr( icon )))
2052 {
2053 SetLastError( ERROR_INVALID_CURSOR_HANDLE );
2054 return FALSE;
2055 }
2056
2057 frame = get_icon_frame( ptr, 0 );
2058 if (!frame)
2059 {
2060 release_icon_ptr( icon, ptr );
2061 SetLastError( ERROR_INVALID_CURSOR_HANDLE );
2062 return FALSE;
2063 }
2064
2065 TRACE("%p => %dx%d\n", icon, frame->width, frame->height);
2066
2067 info->fIcon = ptr->is_icon;
2068 info->xHotspot = ptr->hotspot.x;
2069 info->yHotspot = ptr->hotspot.y;
2070 info->hbmColor = copy_bitmap( frame->color );
2071 info->hbmMask = copy_bitmap( frame->mask );
2072 info->wResID = 0;
2073 info->szModName[0] = 0;
2074 info->szResName[0] = 0;
2075 if (ptr->module)
2076 {
2077 if (IS_INTRESOURCE( ptr->resname )) info->wResID = LOWORD( ptr->resname );
2078 else lstrcpynW( info->szResName, ptr->resname, MAX_PATH );
2079 }
2080 if (!info->hbmMask || (!info->hbmColor && frame->color))
2081 {
2082 DeleteObject( info->hbmMask );
2083 DeleteObject( info->hbmColor );
2084 ret = FALSE;
2085 }
2086 module = ptr->module;
2087 release_icon_frame( ptr, 0, frame );
2088 release_icon_ptr( icon, ptr );
2089 if (ret && module) GetModuleFileNameW( module, info->szModName, MAX_PATH );
2090 return ret;
2091 }
2092
2093 /* copy an icon bitmap, even when it can't be selected into a DC */
2094 /* helper for CreateIconIndirect */
2095 static void stretch_blt_icon( HDC hdc_dst, int dst_x, int dst_y, int dst_width, int dst_height,
2096 HBITMAP src, int width, int height )
2097 {
2098 HDC hdc = CreateCompatibleDC( 0 );
2099
2100 if (!SelectObject( hdc, src )) /* do it the hard way */
2101 {
2102 BITMAPINFO *info;
2103 void *bits;
2104
2105 if (!(info = HeapAlloc( GetProcessHeap(), 0, FIELD_OFFSET( BITMAPINFO, bmiColors[256] )))) return;
2106 info->bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
2107 info->bmiHeader.biWidth = width;
2108 info->bmiHeader.biHeight = height;
2109 info->bmiHeader.biPlanes = GetDeviceCaps( hdc_dst, PLANES );
2110 info->bmiHeader.biBitCount = GetDeviceCaps( hdc_dst, BITSPIXEL );
2111 info->bmiHeader.biCompression = BI_RGB;
2112 info->bmiHeader.biSizeImage = get_dib_image_size( width, height, info->bmiHeader.biBitCount );
2113 info->bmiHeader.biXPelsPerMeter = 0;
2114 info->bmiHeader.biYPelsPerMeter = 0;
2115 info->bmiHeader.biClrUsed = 0;
2116 info->bmiHeader.biClrImportant = 0;
2117 bits = HeapAlloc( GetProcessHeap(), 0, info->bmiHeader.biSizeImage );
2118 if (bits && GetDIBits( hdc, src, 0, height, bits, info, DIB_RGB_COLORS ))
2119 StretchDIBits( hdc_dst, dst_x, dst_y, dst_width, dst_height,
2120 0, 0, width, height, bits, info, DIB_RGB_COLORS, SRCCOPY );
2121
2122 HeapFree( GetProcessHeap(), 0, bits );
2123 HeapFree( GetProcessHeap(), 0, info );
2124 }
2125 else StretchBlt( hdc_dst, dst_x, dst_y, dst_width, dst_height, hdc, 0, 0, width, height, SRCCOPY );
2126
2127 DeleteDC( hdc );
2128 }
2129
2130 /**********************************************************************
2131 * CreateIconIndirect (USER32.@)
2132 */
2133 HICON WINAPI CreateIconIndirect(PICONINFO iconinfo)
2134 {
2135 BITMAP bmpXor, bmpAnd;
2136 HICON hObj;
2137 HBITMAP color = 0, mask;
2138 int width, height;
2139 HDC hdc;
2140
2141 TRACE("color %p, mask %p, hotspot %ux%u, fIcon %d\n",
2142 iconinfo->hbmColor, iconinfo->hbmMask,
2143 iconinfo->xHotspot, iconinfo->yHotspot, iconinfo->fIcon);
2144
2145 if (!iconinfo->hbmMask) return 0;
2146
2147 GetObjectW( iconinfo->hbmMask, sizeof(bmpAnd), &bmpAnd );
2148 TRACE("mask: width %d, height %d, width bytes %d, planes %u, bpp %u\n",
2149 bmpAnd.bmWidth, bmpAnd.bmHeight, bmpAnd.bmWidthBytes,
2150 bmpAnd.bmPlanes, bmpAnd.bmBitsPixel);
2151
2152 if (iconinfo->hbmColor)
2153 {
2154 GetObjectW( iconinfo->hbmColor, sizeof(bmpXor), &bmpXor );
2155 TRACE("color: width %d, height %d, width bytes %d, planes %u, bpp %u\n",
2156 bmpXor.bmWidth, bmpXor.bmHeight, bmpXor.bmWidthBytes,
2157 bmpXor.bmPlanes, bmpXor.bmBitsPixel);
2158
2159 width = bmpXor.bmWidth;
2160 height = bmpXor.bmHeight;
2161 if (bmpXor.bmPlanes * bmpXor.bmBitsPixel != 1 || bmpAnd.bmPlanes * bmpAnd.bmBitsPixel != 1)
2162 {
2163 color = CreateCompatibleBitmap( screen_dc, width, height );
2164 mask = CreateBitmap( width, height, 1, 1, NULL );
2165 }
2166 else mask = CreateBitmap( width, height * 2, 1, 1, NULL );
2167 }
2168 else
2169 {
2170 width = bmpAnd.bmWidth;
2171 height = bmpAnd.bmHeight;
2172 mask = CreateBitmap( width, height, 1, 1, NULL );
2173 }
2174
2175 hdc = CreateCompatibleDC( 0 );
2176 SelectObject( hdc, mask );
2177 stretch_blt_icon( hdc, 0, 0, width, height, iconinfo->hbmMask, bmpAnd.bmWidth, bmpAnd.bmHeight );
2178
2179 if (color)
2180 {
2181 SelectObject( hdc, color );
2182 stretch_blt_icon( hdc, 0, 0, width, height, iconinfo->hbmColor, width, height );
2183 }
2184 else if (iconinfo->hbmColor)
2185 {
2186 stretch_blt_icon( hdc, 0, height, width, height, iconinfo->hbmColor, width, height );
2187 }
2188 else height /= 2;
2189
2190 DeleteDC( hdc );
2191
2192 hObj = alloc_icon_handle( FALSE, 1 );
2193 if (hObj)
2194 {
2195 struct cursoricon_object *info = get_icon_ptr( hObj );
2196 struct cursoricon_frame *frame;
2197
2198 info->is_icon = iconinfo->fIcon;
2199 frame = get_icon_frame( info, 0 );
2200 frame->delay = ~0;
2201 frame->width = width;
2202 frame->height = height;
2203 frame->color = color;
2204 frame->mask = mask;
2205 frame->alpha = create_alpha_bitmap( iconinfo->hbmColor, mask, NULL, NULL );
2206 release_icon_frame( info, 0, frame );
2207 if (info->is_icon)
2208 {
2209 info->hotspot.x = width / 2;
2210 info->hotspot.y = height / 2;
2211 }
2212 else
2213 {
2214 info->hotspot.x = iconinfo->xHotspot;
2215 info->hotspot.y = iconinfo->yHotspot;
2216 }
2217
2218 release_icon_ptr( hObj, info );
2219 }
2220 return hObj;
2221 }
2222
2223 /******************************************************************************
2224 * DrawIconEx (USER32.@) Draws an icon or cursor on device context
2225 *
2226 * NOTES
2227 * Why is this using SM_CXICON instead of SM_CXCURSOR?
2228 *
2229 * PARAMS
2230 * hdc [I] Handle to device context
2231 * x0 [I] X coordinate of upper left corner
2232 * y0 [I] Y coordinate of upper left corner
2233 * hIcon [I] Handle to icon to draw
2234 * cxWidth [I] Width of icon
2235 * cyWidth [I] Height of icon
2236 * istep [I] Index of frame in animated cursor
2237 * hbr [I] Handle to background brush
2238 * flags [I] Icon-drawing flags
2239 *
2240 * RETURNS
2241 * Success: TRUE
2242 * Failure: FALSE
2243 */
2244 BOOL WINAPI DrawIconEx( HDC hdc, INT x0, INT y0, HICON hIcon,
2245 INT cxWidth, INT cyWidth, UINT istep,
2246 HBRUSH hbr, UINT flags )
2247 {
2248 struct cursoricon_frame *frame;
2249 struct cursoricon_object *ptr;
2250 HDC hdc_dest, hMemDC;
2251 BOOL result = FALSE, DoOffscreen;
2252 HBITMAP hB_off = 0;
2253 COLORREF oldFg, oldBg;
2254 INT x, y, nStretchMode;
2255
2256 TRACE_(icon)("(hdc=%p,pos=%d.%d,hicon=%p,extend=%d.%d,istep=%d,br=%p,flags=0x%08x)\n",
2257 hdc,x0,y0,hIcon,cxWidth,cyWidth,istep,hbr,flags );
2258
2259 if (!(ptr = get_icon_ptr( hIcon ))) return FALSE;
2260 if (istep >= get_icon_steps( ptr ))
2261 {
2262 TRACE_(icon)("Stepped past end of animated frames=%d\n", istep);
2263 release_icon_ptr( hIcon, ptr );
2264 return FALSE;
2265 }
2266 if (!(frame = get_icon_frame( ptr, istep )))
2267 {
2268 FIXME_(icon)("Error retrieving icon frame %d\n", istep);
2269 release_icon_ptr( hIcon, ptr );
2270 return FALSE;
2271 }
2272 if (!(hMemDC = CreateCompatibleDC( hdc )))
2273 {
2274 release_icon_frame( ptr, istep, frame );
2275 release_icon_ptr( hIcon, ptr );
2276 return FALSE;
2277 }
2278
2279 if (flags & DI_NOMIRROR)
2280 FIXME_(icon)("Ignoring flag DI_NOMIRROR\n");
2281
2282 /* Calculate the size of the destination image. */
2283 if (cxWidth == 0)
2284 {
2285 if (flags & DI_DEFAULTSIZE)
2286 cxWidth = GetSystemMetrics (SM_CXICON);
2287 else
2288 cxWidth = frame->width;
2289 }
2290 if (cyWidth == 0)
2291 {
2292 if (flags & DI_DEFAULTSIZE)
2293 cyWidth = GetSystemMetrics (SM_CYICON);
2294 else
2295 cyWidth = frame->height;
2296 }
2297
2298 DoOffscreen = (GetObjectType( hbr ) == OBJ_BRUSH);
2299
2300 if (DoOffscreen) {
2301 RECT r;
2302
2303 r.left = 0;
2304 r.top = 0;
2305 r.right = cxWidth;
2306 r.bottom = cxWidth;
2307
2308 if (!(hdc_dest = CreateCompatibleDC(hdc))) goto failed;
2309 if (!(hB_off = CreateCompatibleBitmap(hdc, cxWidth, cyWidth)))
2310 {
2311 DeleteDC( hdc_dest );
2312 goto failed;
2313 }
2314 SelectObject(hdc_dest, hB_off);
2315 FillRect(hdc_dest, &r, hbr);
2316 x = y = 0;
2317 }
2318 else
2319 {
2320 hdc_dest = hdc;
2321 x = x0;
2322 y = y0;
2323 }
2324
2325 nStretchMode = SetStretchBltMode (hdc, STRETCH_DELETESCANS);
2326
2327 oldFg = SetTextColor( hdc, RGB(0,0,0) );
2328 oldBg = SetBkColor( hdc, RGB(255,255,255) );
2329
2330 if (frame->alpha && (flags & DI_IMAGE))
2331 {
2332 BOOL alpha_blend = TRUE;
2333
2334 if (GetObjectType( hdc_dest ) == OBJ_MEMDC)
2335 {
2336 BITMAP bm;
2337 HBITMAP bmp = GetCurrentObject( hdc_dest, OBJ_BITMAP );
2338 alpha_blend = GetObjectW( bmp, sizeof(bm), &bm ) && bm.bmBitsPixel > 8;
2339 }
2340 if (alpha_blend)
2341 {
2342 BLENDFUNCTION pixelblend = { AC_SRC_OVER, 0, 255, AC_SRC_ALPHA };
2343 SelectObject( hMemDC, frame->alpha );
2344 if (GdiAlphaBlend( hdc_dest, x, y, cxWidth, cyWidth, hMemDC,
2345 0, 0, frame->width, frame->height,
2346 pixelblend )) goto done;
2347 }
2348 }
2349
2350 if (flags & DI_MASK)
2351 {
2352 DWORD rop = (flags & DI_IMAGE) ? SRCAND : SRCCOPY;
2353 SelectObject( hMemDC, frame->mask );
2354 StretchBlt( hdc_dest, x, y, cxWidth, cyWidth,
2355 hMemDC, 0, 0, frame->width, frame->height, rop );
2356 }
2357
2358 if (flags & DI_IMAGE)
2359 {
2360 if (frame->color)
2361 {
2362 DWORD rop = (flags & DI_MASK) ? SRCINVERT : SRCCOPY;
2363 SelectObject( hMemDC, frame->color );
2364 StretchBlt( hdc_dest, x, y, cxWidth, cyWidth,
2365 hMemDC, 0, 0, frame->width, frame->height, rop );
2366 }
2367 else
2368 {
2369 DWORD rop = (flags & DI_MASK) ? SRCINVERT : SRCCOPY;
2370 SelectObject( hMemDC, frame->mask );
2371 StretchBlt( hdc_dest, x, y, cxWidth, cyWidth,
2372 hMemDC, 0, frame->height, frame->width,
2373 frame->height, rop );
2374 }
2375 }
2376
2377 done:
2378 if (DoOffscreen) BitBlt( hdc, x0, y0, cxWidth, cyWidth, hdc_dest, 0, 0, SRCCOPY );
2379
2380 SetTextColor( hdc, oldFg );
2381 SetBkColor( hdc, oldBg );
2382 SetStretchBltMode (hdc, nStretchMode);
2383 result = TRUE;
2384 if (hdc_dest != hdc) DeleteDC( hdc_dest );
2385 if (hB_off) DeleteObject(hB_off);
2386 failed:
2387 DeleteDC( hMemDC );
2388 release_icon_frame( ptr, istep, frame );
2389 release_icon_ptr( hIcon, ptr );
2390 return result;
2391 }
2392
2393 /***********************************************************************
2394 * DIB_FixColorsToLoadflags
2395 *
2396 * Change color table entries when LR_LOADTRANSPARENT or LR_LOADMAP3DCOLORS
2397 * are in loadflags
2398 */
2399 static void DIB_FixColorsToLoadflags(BITMAPINFO * bmi, UINT loadflags, BYTE pix)
2400 {
2401 int colors;
2402 COLORREF c_W, c_S, c_F, c_L, c_C;
2403 int incr,i;
2404 RGBQUAD *ptr;
2405 int bitmap_type;
2406 LONG width;
2407 LONG height;
2408 WORD bpp;
2409 DWORD compr;
2410
2411 if (((bitmap_type = DIB_GetBitmapInfo((BITMAPINFOHEADER*) bmi, &width, &height, &bpp, &compr)) == -1))
2412 {
2413 WARN_(resource)("Invalid bitmap\n");
2414 return;
2415 }
2416
2417 if (bpp > 8) return;
2418
2419 if (bitmap_type == 0) /* BITMAPCOREHEADER */
2420 {
2421 incr = 3;
2422 colors = 1 << bpp;
2423 }
2424 else
2425 {
2426 incr = 4;
2427 colors = bmi->bmiHeader.biClrUsed;
2428 if (colors > 256) colors = 256;
2429 if (!colors && (bpp <= 8)) colors = 1 << bpp;
2430 }
2431
2432 c_W = GetSysColor(COLOR_WINDOW);
2433 c_S = GetSysColor(COLOR_3DSHADOW);
2434 c_F = GetSysColor(COLOR_3DFACE);
2435 c_L = GetSysColor(COLOR_3DLIGHT);
2436
2437 if (loadflags & LR_LOADTRANSPARENT) {
2438 switch (bpp) {
2439 case 1: pix = pix >> 7; break;
2440 case 4: pix = pix >> 4; break;
2441 case 8: break;
2442 default:
2443 WARN_(resource)("(%d): Unsupported depth\n", bpp);
2444 return;
2445 }
2446 if (pix >= colors) {
2447 WARN_(resource)("pixel has color index greater than biClrUsed!\n");
2448 return;
2449 }
2450 if (loadflags & LR_LOADMAP3DCOLORS) c_W = c_F;
2451 ptr = (RGBQUAD*)((char*)bmi->bmiColors+pix*incr);
2452 ptr->rgbBlue = GetBValue(c_W);
2453 ptr->rgbGreen = GetGValue(c_W);
2454 ptr->rgbRed = GetRValue(c_W);
2455 }
2456 if (loadflags & LR_LOADMAP3DCOLORS)
2457 for (i=0; i<colors; i++) {
2458 ptr = (RGBQUAD*)((char*)bmi->bmiColors+i*incr);
2459 c_C = RGB(ptr->rgbRed, ptr->rgbGreen, ptr->rgbBlue);
2460 if (c_C == RGB(128, 128, 128)) {
2461 ptr->rgbRed = GetRValue(c_S);
2462 ptr->rgbGreen = GetGValue(c_S);
2463 ptr->rgbBlue = GetBValue(c_S);
2464 } else if (c_C == RGB(192, 192, 192)) {
2465 ptr->rgbRed = GetRValue(c_F);
2466 ptr->rgbGreen = GetGValue(c_F);
2467 ptr->rgbBlue = GetBValue(c_F);
2468 } else if (c_C == RGB(223, 223, 223)) {
2469 ptr->rgbRed = GetRValue(c_L);
2470 ptr->rgbGreen = GetGValue(c_L);
2471 ptr->rgbBlue = GetBValue(c_L);
2472 }
2473 }
2474 }
2475
2476
2477 /**********************************************************************
2478 * BITMAP_Load
2479 */
2480 static HBITMAP BITMAP_Load( HINSTANCE instance, LPCWSTR name,
2481 INT desiredx, INT desiredy, UINT loadflags )
2482 {
2483 HBITMAP hbitmap = 0, orig_bm;
2484 HRSRC hRsrc;
2485 HGLOBAL handle;
2486 const char *ptr = NULL;
2487 BITMAPINFO *info, *fix_info = NULL, *scaled_info = NULL;
2488 int size;
2489 BYTE pix;
2490 char *bits;
2491 LONG width, height, new_width, new_height;
2492 WORD bpp_dummy;
2493 DWORD compr_dummy, offbits = 0;
2494 INT bm_type;
2495 HDC screen_mem_dc = NULL;
2496
2497 if (!(loadflags & LR_LOADFROMFILE))
2498 {
2499 if (!instance)
2500 {
2501 /* OEM bitmap: try to load the resource from user32.dll */
2502 instance = user32_module;
2503 }
2504
2505 if (!(hRsrc = FindResourceW( instance, name, (LPWSTR)RT_BITMAP ))) return 0;
2506 if (!(handle = LoadResource( instance, hRsrc ))) return 0;
2507
2508 if ((info = LockResource( handle )) == NULL) return 0;
2509 }
2510 else
2511 {
2512 BITMAPFILEHEADER * bmfh;
2513
2514 if (!(ptr = map_fileW( name, NULL ))) return 0;
2515 info = (BITMAPINFO *)(ptr + sizeof(BITMAPFILEHEADER));
2516 bmfh = (BITMAPFILEHEADER *)ptr;
2517 if (bmfh->bfType != 0x4d42 /* 'BM' */)
2518 {
2519 WARN("Invalid/unsupported bitmap format!\n");
2520 goto end;
2521 }
2522 if (bmfh->bfOffBits) offbits = bmfh->bfOffBits - sizeof(BITMAPFILEHEADER);
2523 }
2524
2525 bm_type = DIB_GetBitmapInfo( &info->bmiHeader, &width, &height,
2526 &bpp_dummy, &compr_dummy);
2527 if (bm_type == -1)
2528 {
2529 WARN("Invalid bitmap format!\n");
2530 goto end;
2531 }
2532
2533 size = bitmap_info_size(info, DIB_RGB_COLORS);
2534 fix_info = HeapAlloc(GetProcessHeap(), 0, size);
2535 scaled_info = HeapAlloc(GetProcessHeap(), 0, size);
2536
2537 if (!fix_info || !scaled_info) goto end;
2538 memcpy(fix_info, info, size);
2539
2540 pix = *((LPBYTE)info + size);
2541 DIB_FixColorsToLoadflags(fix_info, loadflags, pix);
2542
2543 memcpy(scaled_info, fix_info, size);
2544
2545 if(desiredx != 0)
2546 new_width = desiredx;
2547 else
2548 new_width = width;
2549
2550 if(desiredy != 0)
2551 new_height = height > 0 ? desiredy : -desiredy;
2552 else
2553 new_height = height;
2554
2555 if(bm_type == 0)
2556 {
2557 BITMAPCOREHEADER *core = (BITMAPCOREHEADER *)&scaled_info->bmiHeader;
2558 core->bcWidth = new_width;
2559 core->bcHeight = new_height;
2560 }
2561 else
2562 {
2563 /* Some sanity checks for BITMAPINFO (not applicable to BITMAPCOREINFO) */
2564 if (info->bmiHeader.biHeight > 65535 || info->bmiHeader.biWidth > 65535) {
2565 WARN("Broken BitmapInfoHeader!\n");
2566 goto end;
2567 }
2568
2569 scaled_info->bmiHeader.biWidth = new_width;
2570 scaled_info->bmiHeader.biHeight = new_height;
2571 }
2572
2573 if (new_height < 0) new_height = -new_height;
2574
2575 if (!screen_dc) screen_dc = CreateDCW( DISPLAYW, NULL, NULL, NULL );
2576 if (!(screen_mem_dc = CreateCompatibleDC( screen_dc ))) goto end;
2577
2578 bits = (char *)info + (offbits ? offbits : size);
2579
2580 if (loadflags & LR_CREATEDIBSECTION)
2581 {
2582 scaled_info->bmiHeader.biCompression = 0; /* DIBSection can't be compressed */
2583 hbitmap = CreateDIBSection(screen_dc, scaled_info, DIB_RGB_COLORS, NULL, 0, 0);
2584 }
2585 else
2586 {
2587 if (is_dib_monochrome(fix_info))
2588 hbitmap = CreateBitmap(new_width, new_height, 1, 1, NULL);
2589 else
2590 hbitmap = CreateCompatibleBitmap(screen_dc, new_width, new_height);
2591 }
2592
2593 orig_bm = SelectObject(screen_mem_dc, hbitmap);
2594 StretchDIBits(screen_mem_dc, 0, 0, new_width, new_height, 0, 0, width, height, bits, fix_info, DIB_RGB_COLORS, SRCCOPY);
2595 SelectObject(screen_mem_dc, orig_bm);
2596
2597 end:
2598 if (screen_mem_dc) DeleteDC(screen_mem_dc);
2599 HeapFree(GetProcessHeap(), 0, scaled_info);
2600 HeapFree(GetProcessHeap(), 0, fix_info);
2601 if (loadflags & LR_LOADFROMFILE) UnmapViewOfFile( ptr );
2602
2603 return hbitmap;
2604 }
2605
2606 /**********************************************************************
2607 * LoadImageA (USER32.@)
2608 *
2609 * See LoadImageW.
2610 */
2611 HANDLE WINAPI LoadImageA( HINSTANCE hinst, LPCSTR name, UINT type,
2612 INT desiredx, INT desiredy, UINT loadflags)
2613 {
2614 HANDLE res;
2615 LPWSTR u_name;
2616
2617 if (IS_INTRESOURCE(name))
2618 return LoadImageW(hinst, (LPCWSTR)name, type, desiredx, desiredy, loadflags);
2619
2620 __TRY {
2621 DWORD len = MultiByteToWideChar( CP_ACP, 0, name, -1, NULL, 0 );
2622 u_name = HeapAlloc( GetProcessHeap(), 0, len * sizeof(WCHAR) );
2623 MultiByteToWideChar( CP_ACP, 0, name, -1, u_name, len );
2624 }
2625 __EXCEPT_PAGE_FAULT {
2626 SetLastError( ERROR_INVALID_PARAMETER );
2627 return 0;
2628 }
2629 __ENDTRY
2630 res = LoadImageW(hinst, u_name, type, desiredx, desiredy, loadflags);
2631 HeapFree(GetProcessHeap(), 0, u_name);
2632 return res;
2633 }
2634
2635
2636 /******************************************************************************
2637 * LoadImageW (USER32.@) Loads an icon, cursor, or bitmap
2638 *
2639 * PARAMS
2640 * hinst [I] Handle of instance that contains image
2641 * name [I] Name of image
2642 * type [I] Type of image
2643 * desiredx [I] Desired width
2644 * desiredy [I] Desired height
2645 * loadflags [I] Load flags
2646 *
2647 * RETURNS
2648 * Success: Handle to newly loaded image
2649 * Failure: NULL
2650 *
2651 * FIXME: Implementation lacks some features, see LR_ defines in winuser.h
2652 */
2653 HANDLE WINAPI LoadImageW( HINSTANCE hinst, LPCWSTR name, UINT type,
2654 INT desiredx, INT desiredy, UINT loadflags )
2655 {
2656 int depth;
2657
2658 TRACE_(resource)("(%p,%s,%d,%d,%d,0x%08x)\n",
2659 hinst,debugstr_w(name),type,desiredx,desiredy,loadflags);
2660
2661 if (loadflags & LR_LOADFROMFILE) loadflags &= ~LR_SHARED;
2662 switch (type) {
2663 case IMAGE_BITMAP:
2664 return BITMAP_Load( hinst, name, desiredx, desiredy, loadflags );
2665
2666 case IMAGE_ICON:
2667 case IMAGE_CURSOR:
2668 depth = 1;
2669 if (!(loadflags & LR_MONOCHROME))
2670 {
2671 if (!screen_dc) screen_dc = CreateDCW( DISPLAYW, NULL, NULL, NULL );
2672 if (screen_dc) depth = GetDeviceCaps( screen_dc, BITSPIXEL );
2673 }
2674 return CURSORICON_Load(hinst, name, desiredx, desiredy, depth, (type == IMAGE_CURSOR), loadflags);
2675 }
2676 return 0;
2677 }
2678
2679 /******************************************************************************
2680 * CopyImage (USER32.@) Creates new image and copies attributes to it
2681 *
2682 * PARAMS
2683 * hnd [I] Handle to image to copy
2684 * type [I] Type of image to copy
2685 * desiredx [I] Desired width of new image
2686 * desiredy [I] Desired height of new image
2687 * flags [I] Copy flags
2688 *
2689 * RETURNS
2690 * Success: Handle to newly created image
2691 * Failure: NULL
2692 *
2693 * BUGS
2694 * Only Windows NT 4.0 supports the LR_COPYRETURNORG flag for bitmaps,
2695 * all other versions (95/2000/XP have been tested) ignore it.
2696 *
2697 * NOTES
2698 * If LR_CREATEDIBSECTION is absent, the copy will be monochrome for
2699 * a monochrome source bitmap or if LR_MONOCHROME is present, otherwise
2700 * the copy will have the same depth as the screen.
2701 * The content of the image will only be copied if the bit depth of the
2702 * original image is compatible with the bit depth of the screen, or
2703 * if the source is a DIB section.
2704 * The LR_MONOCHROME flag is ignored if LR_CREATEDIBSECTION is present.
2705 */
2706 HANDLE WINAPI CopyImage( HANDLE hnd, UINT type, INT desiredx,
2707 INT desiredy, UINT flags )
2708 {
2709 TRACE("hnd=%p, type=%u, desiredx=%d, desiredy=%d, flags=%x\n",
2710 hnd, type, desiredx, desiredy, flags);
2711
2712 switch (type)
2713 {
2714 case IMAGE_BITMAP:
2715 {
2716 HBITMAP res = NULL;
2717 DIBSECTION ds;
2718 int objSize;
2719 BITMAPINFO * bi;
2720
2721 objSize = GetObjectW( hnd, sizeof(ds), &ds );
2722 if (!objSize) return 0;
2723 if ((desiredx < 0) || (desiredy < 0)) return 0;
2724
2725 if (flags & LR_COPYFROMRESOURCE)
2726 {
2727 FIXME("The flag LR_COPYFROMRESOURCE is not implemented for bitmaps\n");
2728 }
2729
2730 if (desiredx == 0) desiredx = ds.dsBm.bmWidth;
2731 if (desiredy == 0) desiredy = ds.dsBm.bmHeight;
2732
2733 /* Allocate memory for a BITMAPINFOHEADER structure and a
2734 color table. The maximum number of colors in a color table
2735 is 256 which corresponds to a bitmap with depth 8.
2736 Bitmaps with higher depths don't have color tables. */
2737 bi = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(BITMAPINFOHEADER) + 256 * sizeof(RGBQUAD));
2738 if (!bi) return 0;
2739
2740 bi->bmiHeader.biSize = sizeof(bi->bmiHeader);
2741 bi->bmiHeader.biPlanes = ds.dsBm.bmPlanes;
2742 bi->bmiHeader.biBitCount = ds.dsBm.bmBitsPixel;
2743 bi->bmiHeader.biCompression = BI_RGB;
2744
2745 if (flags & LR_CREATEDIBSECTION)
2746 {
2747 /* Create a DIB section. LR_MONOCHROME is ignored */
2748 void * bits;
2749 HDC dc = CreateCompatibleDC(NULL);
2750
2751 if (objSize == sizeof(DIBSECTION))
2752 {
2753 /* The source bitmap is a DIB.
2754 Get its attributes to create an exact copy */
2755 memcpy(bi, &ds.dsBmih, sizeof(BITMAPINFOHEADER));
2756 }
2757
2758 bi->bmiHeader.biWidth = desiredx;
2759 bi->bmiHeader.biHeight = desiredy;
2760
2761 /* Get the color table or the color masks */
2762 GetDIBits(dc, hnd, 0, ds.dsBm.bmHeight, NULL, bi, DIB_RGB_COLORS);
2763
2764 res = CreateDIBSection(dc, bi, DIB_RGB_COLORS, &bits, NULL, 0);
2765 DeleteDC(dc);
2766 }
2767 else
2768 {
2769 /* Create a device-dependent bitmap */
2770
2771 BOOL monochrome = (flags & LR_MONOCHROME);
2772
2773 if (objSize == sizeof(DIBSECTION))
2774 {
2775 /* The source bitmap is a DIB section.
2776 Get its attributes */
2777 HDC dc = CreateCompatibleDC(NULL);
2778 bi->bmiHeader.biWidth = ds.dsBm.bmWidth;
2779 bi->bmiHeader.biHeight = ds.dsBm.bmHeight;
2780 GetDIBits(dc, hnd, 0, ds.dsBm.bmHeight, NULL, bi, DIB_RGB_COLORS);
2781 DeleteDC(dc);
2782
2783 if (!monochrome && ds.dsBm.bmBitsPixel == 1)
2784 {
2785 /* Look if the colors of the DIB are black and white */
2786
2787 monochrome =
2788 (bi->bmiColors[0].rgbRed == 0xff
2789 && bi->bmiColors[0].rgbGreen == 0xff
2790 && bi->bmiColors[0].rgbBlue == 0xff
2791 && bi->bmiColors[0].rgbReserved == 0
2792 && bi->bmiColors[1].rgbRed == 0
2793 && bi->bmiColors[1].rgbGreen == 0
2794 && bi->bmiColors[1].rgbBlue == 0
2795 && bi->bmiColors[1].rgbReserved == 0)
2796 ||
2797 (bi->bmiColors[0].rgbRed == 0
2798 && bi->bmiColors[0].rgbGreen == 0
2799 && bi->bmiColors[0].rgbBlue == 0
2800 && bi->bmiColors[0].rgbReserved == 0
2801 && bi->bmiColors[1].rgbRed == 0xff
2802 && bi->bmiColors[1].rgbGreen == 0xff
2803 && bi->bmiColors[1].rgbBlue == 0xff
2804 && bi->bmiColors[1].rgbReserved == 0);
2805 }
2806 }
2807 else if (!monochrome)
2808 {
2809 monochrome = ds.dsBm.bmBitsPixel == 1;
2810 }
2811
2812 if (monochrome)
2813 {
2814 res = CreateBitmap(desiredx, desiredy, 1, 1, NULL);
2815 }
2816 else
2817 {
2818 HDC screenDC = GetDC(NULL);
2819 res = CreateCompatibleBitmap(screenDC, desiredx, desiredy);
2820 ReleaseDC(NULL, screenDC);
2821 }
2822 }
2823
2824 if (res)
2825 {
2826 /* Only copy the bitmap if it's a DIB section or if it's
2827 compatible to the screen */
2828 BOOL copyContents;
2829
2830 if (objSize == sizeof(DIBSECTION))
2831 {
2832 copyContents = TRUE;
2833 }
2834 else
2835 {
2836 HDC screenDC = GetDC(NULL);
2837 int screen_depth = GetDeviceCaps(screenDC, BITSPIXEL);
2838 ReleaseDC(NULL, screenDC);
2839
2840 copyContents = (ds.dsBm.bmBitsPixel == 1 || ds.dsBm.bmBitsPixel == screen_depth);
2841 }
2842
2843 if (copyContents)
2844 {
2845 /* The source bitmap may already be selected in a device context,
2846 use GetDIBits/StretchDIBits and not StretchBlt */
2847
2848 HDC dc;
2849 void * bits;
2850
2851 dc = CreateCompatibleDC(NULL);
2852
2853 bi->bmiHeader.biWidth = ds.dsBm.bmWidth;
2854 bi->bmiHeader.biHeight = ds.dsBm.bmHeight;
2855 bi->bmiHeader.biSizeImage = 0;
2856 bi->bmiHeader.biClrUsed = 0;
2857 bi->bmiHeader.biClrImportant = 0;
2858
2859 /* Fill in biSizeImage */
2860 GetDIBits(dc, hnd, 0, ds.dsBm.bmHeight, NULL, bi, DIB_RGB_COLORS);
2861 bits = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, bi->bmiHeader.biSizeImage);
2862
2863 if (bits)
2864 {
2865 HBITMAP oldBmp;
2866
2867 /* Get the image bits of the source bitmap */
2868 GetDIBits(dc, hnd, 0, ds.dsBm.bmHeight, bits, bi, DIB_RGB_COLORS);
2869
2870 /* Copy it to the destination bitmap */
2871 oldBmp = SelectObject(dc, res);
2872 StretchDIBits(dc, 0, 0, desiredx, desiredy,
2873 0, 0, ds.dsBm.bmWidth, ds.dsBm.bmHeight,
2874 bits, bi, DIB_RGB_COLORS, SRCCOPY);
2875 SelectObject(dc, oldBmp);
2876
2877 HeapFree(GetProcessHeap(), 0, bits);
2878 }
2879
2880 DeleteDC(dc);
2881 }
2882
2883 if (flags & LR_COPYDELETEORG)
2884 {
2885 DeleteObject(hnd);
2886 }
2887 }
2888 HeapFree(GetProcessHeap(), 0, bi);
2889 return res;
2890 }
2891 case IMAGE_ICON:
2892 case IMAGE_CURSOR:
2893 {
2894 struct cursoricon_object *icon;
2895 HICON res = 0;
2896 int depth = (flags & LR_MONOCHROME) ? 1 : GetDeviceCaps( screen_dc, BITSPIXEL );
2897
2898 if (flags & LR_DEFAULTSIZE)
2899 {
2900 if (!desiredx) desiredx = GetSystemMetrics( type == IMAGE_ICON ? SM_CXICON : SM_CXCURSOR );
2901 if (!desiredy) desiredy = GetSystemMetrics( type == IMAGE_ICON ? SM_CYICON : SM_CYCURSOR );
2902 }
2903
2904 if (!(icon = get_icon_ptr( hnd ))) return 0;
2905
2906 if (icon->rsrc && (flags & LR_COPYFROMRESOURCE))
2907 res = CURSORICON_Load( icon->module, icon->resname, desiredx, desiredy, depth,
2908 !icon->is_icon, flags );
2909 else
2910 res = CopyIcon( hnd ); /* FIXME: change size if necessary */
2911 release_icon_ptr( hnd, icon );
2912
2913 if (res && (flags & LR_COPYDELETEORG)) DeleteObject( hnd );
2914 return res;
2915 }
2916 }
2917 return 0;
2918 }
2919
2920
2921 /******************************************************************************
2922 * LoadBitmapW (USER32.@) Loads bitmap from the executable file
2923 *
2924 * RETURNS
2925 * Success: Handle to specified bitmap
2926 * Failure: NULL
2927 */
2928 HBITMAP WINAPI LoadBitmapW(
2929 HINSTANCE instance, /* [in] Handle to application instance */
2930 LPCWSTR name) /* [in] Address of bitmap resource name */
2931 {
2932 return LoadImageW( instance, name, IMAGE_BITMAP, 0, 0, 0 );
2933 }
2934
2935 /**********************************************************************
2936 * LoadBitmapA (USER32.@)
2937 *
2938 * See LoadBitmapW.
2939 */
2940 HBITMAP WINAPI LoadBitmapA( HINSTANCE instance, LPCSTR name )
2941 {
2942 return LoadImageA( instance, name, IMAGE_BITMAP, 0, 0, 0 );
2943 }
Windows API implementation