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winealsa.drv: Rewrite channel counting for additional readability and circumvention...
[wine.git] / dlls / user32 / cursoricon.c
blobe27365cada1b2bccbb5cf08f94a4dd393f371403
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 <stdarg.h>
29 #include <string.h>
30 #include <stdlib.h>
31
32 #include "windef.h"
33 #include "winbase.h"
34 #include "wingdi.h"
35 #include "winerror.h"
36 #include "winnls.h"
37 #include "wine/exception.h"
38 #include "wine/server.h"
39 #include "controls.h"
40 #include "user_private.h"
41 #include "wine/list.h"
42 #include "wine/debug.h"
43
44 WINE_DEFAULT_DEBUG_CHANNEL(cursor);
45 WINE_DECLARE_DEBUG_CHANNEL(icon);
46 WINE_DECLARE_DEBUG_CHANNEL(resource);
47
48 #include "pshpack1.h"
49
50 typedef struct {
51 BYTE bWidth;
52 BYTE bHeight;
53 BYTE bColorCount;
54 BYTE bReserved;
55 WORD xHotspot;
56 WORD yHotspot;
57 DWORD dwDIBSize;
58 DWORD dwDIBOffset;
59 } CURSORICONFILEDIRENTRY;
60
61 typedef struct
62 {
63 WORD idReserved;
64 WORD idType;
65 WORD idCount;
66 CURSORICONFILEDIRENTRY idEntries[1];
67 } CURSORICONFILEDIR;
68
69 #include "poppack.h"
70
71 static RECT CURSOR_ClipRect; /* Cursor clipping rect */
72
73 static HDC screen_dc;
74
75 static const WCHAR DISPLAYW[] = {'D','I','S','P','L','A','Y',0};
76
77
78 /**********************************************************************
79 * ICONCACHE for cursors/icons loaded with LR_SHARED.
80 */
81 typedef struct tagICONCACHE
82 {
83 struct list entry;
84 HMODULE hModule;
85 HRSRC hRsrc;
86 HRSRC hGroupRsrc;
87 HICON hIcon;
88 } ICONCACHE;
89
90 static struct list icon_cache = LIST_INIT( icon_cache );
91
92 static CRITICAL_SECTION IconCrst;
93 static CRITICAL_SECTION_DEBUG critsect_debug =
94 {
95 0, 0, &IconCrst,
96 { &critsect_debug.ProcessLocksList, &critsect_debug.ProcessLocksList },
97 0, 0, { (DWORD_PTR)(__FILE__ ": IconCrst") }
98 };
99 static CRITICAL_SECTION IconCrst = { &critsect_debug, -1, 0, 0, 0, 0 };
100
101
102 /**********************************************************************
103 * User objects management
104 */
105
106 struct cursoricon_frame
107 {
108 HBITMAP color; /* color bitmap */
109 HBITMAP alpha; /* pre-multiplied alpha bitmap for 32-bpp icons */
110 HBITMAP mask; /* mask bitmap (followed by color for 1-bpp icons) */
111 };
112
113 struct cursoricon_object
114 {
115 struct user_object obj; /* object header */
116 ULONG_PTR param; /* opaque param used by 16-bit code */
117 BOOL is_icon; /* whether icon or cursor */
118 UINT width;
119 UINT height;
120 POINT hotspot;
121 UINT num_frames; /* number of frames in the icon/cursor */
122 UINT ms_delay; /* delay between frames (in milliseconds) */
123 struct cursoricon_frame frames[1]; /* icon frame information */
124 };
125
126 static HICON alloc_icon_handle( UINT num_frames )
127 {
128 struct cursoricon_object *obj = HeapAlloc( GetProcessHeap(), HEAP_ZERO_MEMORY,
129 FIELD_OFFSET( struct cursoricon_object, frames[num_frames] ));
130
131 if (!obj) return 0;
132 obj->num_frames = num_frames;
133 return alloc_user_handle( &obj->obj, USER_ICON );
134 }
135
136 static struct cursoricon_object *get_icon_ptr( HICON handle )
137 {
138 struct cursoricon_object *obj = get_user_handle_ptr( handle, USER_ICON );
139 if (obj == OBJ_OTHER_PROCESS)
140 {
141 WARN( "icon handle %p from other process\n", handle );
142 obj = NULL;
143 }
144 return obj;
145 }
146
147 static void release_icon_ptr( HICON handle, struct cursoricon_object *ptr )
148 {
149 release_user_handle_ptr( ptr );
150 }
151
152 static BOOL free_icon_handle( HICON handle )
153 {
154 struct cursoricon_object *obj = free_user_handle( handle, USER_ICON );
155
156 if (obj == OBJ_OTHER_PROCESS) WARN( "icon handle %p from other process\n", handle );
157 else if (obj)
158 {
159 ULONG_PTR param = obj->param;
160 UINT i;
161
162 for (i=0; i<obj->num_frames; i++)
163 {
164 if (obj->frames[i].alpha) DeleteObject( obj->frames[i].alpha );
165 if (obj->frames[i].color) DeleteObject( obj->frames[i].color );
166 DeleteObject( obj->frames[i].mask );
167 }
168 HeapFree( GetProcessHeap(), 0, obj );
169 if (wow_handlers.free_icon_param && param) wow_handlers.free_icon_param( param );
170 USER_Driver->pDestroyCursorIcon( handle );
171 return TRUE;
172 }
173 return FALSE;
174 }
175
176 ULONG_PTR get_icon_param( HICON handle )
177 {
178 ULONG_PTR ret = 0;
179 struct cursoricon_object *obj = get_user_handle_ptr( handle, USER_ICON );
180
181 if (obj == OBJ_OTHER_PROCESS) WARN( "icon handle %p from other process\n", handle );
182 else if (obj)
183 {
184 ret = obj->param;
185 release_user_handle_ptr( obj );
186 }
187 return ret;
188 }
189
190 ULONG_PTR set_icon_param( HICON handle, ULONG_PTR param )
191 {
192 ULONG_PTR ret = 0;
193 struct cursoricon_object *obj = get_user_handle_ptr( handle, USER_ICON );
194
195 if (obj == OBJ_OTHER_PROCESS) WARN( "icon handle %p from other process\n", handle );
196 else if (obj)
197 {
198 ret = obj->param;
199 obj->param = param;
200 release_user_handle_ptr( obj );
201 }
202 return ret;
203 }
204
205
206 /***********************************************************************
207 * map_fileW
208 *
209 * Helper function to map a file to memory:
210 * name - file name
211 * [RETURN] ptr - pointer to mapped file
212 * [RETURN] filesize - pointer size of file to be stored if not NULL
213 */
214 static void *map_fileW( LPCWSTR name, LPDWORD filesize )
215 {
216 HANDLE hFile, hMapping;
217 LPVOID ptr = NULL;
218
219 hFile = CreateFileW( name, GENERIC_READ, FILE_SHARE_READ, NULL,
220 OPEN_EXISTING, FILE_FLAG_RANDOM_ACCESS, 0 );
221 if (hFile != INVALID_HANDLE_VALUE)
222 {
223 hMapping = CreateFileMappingW( hFile, NULL, PAGE_READONLY, 0, 0, NULL );
224 if (hMapping)
225 {
226 ptr = MapViewOfFile( hMapping, FILE_MAP_READ, 0, 0, 0 );
227 CloseHandle( hMapping );
228 if (filesize)
229 *filesize = GetFileSize( hFile, NULL );
230 }
231 CloseHandle( hFile );
232 }
233 return ptr;
234 }
235
236
237 /***********************************************************************
238 * get_dib_width_bytes
239 *
240 * Return the width of a DIB bitmap in bytes. DIB bitmap data is 32-bit aligned.
241 */
242 static int get_dib_width_bytes( int width, int depth )
243 {
244 int words;
245
246 switch(depth)
247 {
248 case 1: words = (width + 31) / 32; break;
249 case 4: words = (width + 7) / 8; break;
250 case 8: words = (width + 3) / 4; break;
251 case 15:
252 case 16: words = (width + 1) / 2; break;
253 case 24: words = (width * 3 + 3)/4; break;
254 default:
255 WARN("(%d): Unsupported depth\n", depth );
256 /* fall through */
257 case 32:
258 words = width;
259 }
260 return 4 * words;
261 }
262
263
264 /***********************************************************************
265 * bitmap_info_size
266 *
267 * Return the size of the bitmap info structure including color table.
268 */
269 static int bitmap_info_size( const BITMAPINFO * info, WORD coloruse )
270 {
271 unsigned int colors, size, masks = 0;
272
273 if (info->bmiHeader.biSize == sizeof(BITMAPCOREHEADER))
274 {
275 const BITMAPCOREHEADER *core = (const BITMAPCOREHEADER *)info;
276 colors = (core->bcBitCount <= 8) ? 1 << core->bcBitCount : 0;
277 return sizeof(BITMAPCOREHEADER) + colors *
278 ((coloruse == DIB_RGB_COLORS) ? sizeof(RGBTRIPLE) : sizeof(WORD));
279 }
280 else /* assume BITMAPINFOHEADER */
281 {
282 colors = info->bmiHeader.biClrUsed;
283 if (colors > 256) /* buffer overflow otherwise */
284 colors = 256;
285 if (!colors && (info->bmiHeader.biBitCount <= 8))
286 colors = 1 << info->bmiHeader.biBitCount;
287 if (info->bmiHeader.biCompression == BI_BITFIELDS) masks = 3;
288 size = max( info->bmiHeader.biSize, sizeof(BITMAPINFOHEADER) + masks * sizeof(DWORD) );
289 return size + colors * ((coloruse == DIB_RGB_COLORS) ? sizeof(RGBQUAD) : sizeof(WORD));
290 }
291 }
292
293
294 /***********************************************************************
295 * copy_bitmap
296 *
297 * Helper function to duplicate a bitmap.
298 */
299 static HBITMAP copy_bitmap( HBITMAP bitmap )
300 {
301 HDC src, dst;
302 HBITMAP new_bitmap;
303 BITMAP bmp;
304
305 if (!bitmap) return 0;
306 if (!GetObjectW( bitmap, sizeof(bmp), &bmp )) return 0;
307
308 src = CreateCompatibleDC( 0 );
309 dst = CreateCompatibleDC( 0 );
310 SelectObject( src, bitmap );
311 new_bitmap = CreateCompatibleBitmap( src, bmp.bmWidth, bmp.bmHeight );
312 SelectObject( dst, new_bitmap );
313 BitBlt( dst, 0, 0, bmp.bmWidth, bmp.bmHeight, src, 0, 0, SRCCOPY );
314 DeleteDC( dst );
315 DeleteDC( src );
316 return new_bitmap;
317 }
318
319
320 /***********************************************************************
321 * is_dib_monochrome
322 *
323 * Returns whether a DIB can be converted to a monochrome DDB.
324 *
325 * A DIB can be converted if its color table contains only black and
326 * white. Black must be the first color in the color table.
327 *
328 * Note : If the first color in the color table is white followed by
329 * black, we can't convert it to a monochrome DDB with
330 * SetDIBits, because black and white would be inverted.
331 */
332 static BOOL is_dib_monochrome( const BITMAPINFO* info )
333 {
334 if (info->bmiHeader.biBitCount != 1) return FALSE;
335
336 if (info->bmiHeader.biSize == sizeof(BITMAPCOREHEADER))
337 {
338 const RGBTRIPLE *rgb = ((const BITMAPCOREINFO*)info)->bmciColors;
339
340 /* Check if the first color is black */
341 if ((rgb->rgbtRed == 0) && (rgb->rgbtGreen == 0) && (rgb->rgbtBlue == 0))
342 {
343 rgb++;
344
345 /* Check if the second color is white */
346 return ((rgb->rgbtRed == 0xff) && (rgb->rgbtGreen == 0xff)
347 && (rgb->rgbtBlue == 0xff));
348 }
349 else return FALSE;
350 }
351 else /* assume BITMAPINFOHEADER */
352 {
353 const RGBQUAD *rgb = info->bmiColors;
354
355 /* Check if the first color is black */
356 if ((rgb->rgbRed == 0) && (rgb->rgbGreen == 0) &&
357 (rgb->rgbBlue == 0) && (rgb->rgbReserved == 0))
358 {
359 rgb++;
360
361 /* Check if the second color is white */
362 return ((rgb->rgbRed == 0xff) && (rgb->rgbGreen == 0xff)
363 && (rgb->rgbBlue == 0xff) && (rgb->rgbReserved == 0));
364 }
365 else return FALSE;
366 }
367 }
368
369 /***********************************************************************
370 * DIB_GetBitmapInfo
371 *
372 * Get the info from a bitmap header.
373 * Return 1 for INFOHEADER, 0 for COREHEADER, -1 in case of failure.
374 */
375 static int DIB_GetBitmapInfo( const BITMAPINFOHEADER *header, LONG *width,
376 LONG *height, WORD *bpp, DWORD *compr )
377 {
378 if (header->biSize == sizeof(BITMAPCOREHEADER))
379 {
380 const BITMAPCOREHEADER *core = (const BITMAPCOREHEADER *)header;
381 *width = core->bcWidth;
382 *height = core->bcHeight;
383 *bpp = core->bcBitCount;
384 *compr = 0;
385 return 0;
386 }
387 else if (header->biSize >= sizeof(BITMAPINFOHEADER))
388 {
389 *width = header->biWidth;
390 *height = header->biHeight;
391 *bpp = header->biBitCount;
392 *compr = header->biCompression;
393 return 1;
394 }
395 ERR("(%d): unknown/wrong size for header\n", header->biSize );
396 return -1;
397 }
398
399 /**********************************************************************
400 * CURSORICON_FindSharedIcon
401 */
402 static HICON CURSORICON_FindSharedIcon( HMODULE hModule, HRSRC hRsrc )
403 {
404 HICON hIcon = 0;
405 ICONCACHE *ptr;
406
407 EnterCriticalSection( &IconCrst );
408
409 LIST_FOR_EACH_ENTRY( ptr, &icon_cache, ICONCACHE, entry )
410 if ( ptr->hModule == hModule && ptr->hRsrc == hRsrc )
411 {
412 hIcon = ptr->hIcon;
413 break;
414 }
415
416 LeaveCriticalSection( &IconCrst );
417
418 return hIcon;
419 }
420
421 /*************************************************************************
422 * CURSORICON_FindCache
423 *
424 * Given a handle, find the corresponding cache element
425 *
426 * PARAMS
427 * Handle [I] handle to an Image
428 *
429 * RETURNS
430 * Success: The cache entry
431 * Failure: NULL
432 *
433 */
434 static ICONCACHE* CURSORICON_FindCache(HICON hIcon)
435 {
436 ICONCACHE *ptr;
437 ICONCACHE *pRet=NULL;
438
439 EnterCriticalSection( &IconCrst );
440
441 LIST_FOR_EACH_ENTRY( ptr, &icon_cache, ICONCACHE, entry )
442 {
443 if ( hIcon == ptr->hIcon )
444 {
445 pRet = ptr;
446 break;
447 }
448 }
449
450 LeaveCriticalSection( &IconCrst );
451
452 return pRet;
453 }
454
455 /**********************************************************************
456 * CURSORICON_AddSharedIcon
457 */
458 static void CURSORICON_AddSharedIcon( HMODULE hModule, HRSRC hRsrc, HRSRC hGroupRsrc, HICON hIcon )
459 {
460 ICONCACHE *ptr = HeapAlloc( GetProcessHeap(), 0, sizeof(ICONCACHE) );
461 if ( !ptr ) return;
462
463 ptr->hModule = hModule;
464 ptr->hRsrc = hRsrc;
465 ptr->hIcon = hIcon;
466 ptr->hGroupRsrc = hGroupRsrc;
467
468 EnterCriticalSection( &IconCrst );
469 list_add_head( &icon_cache, &ptr->entry );
470 LeaveCriticalSection( &IconCrst );
471 }
472
473 /**********************************************************************
474 * get_icon_size
475 */
476 BOOL get_icon_size( HICON handle, SIZE *size )
477 {
478 struct cursoricon_object *info;
479
480 if (!(info = get_icon_ptr( handle ))) return FALSE;
481 size->cx = info->width;
482 size->cy = info->height;
483 release_icon_ptr( handle, info );
484 return TRUE;
485 }
486
487 /*
488 * The following macro functions account for the irregularities of
489 * accessing cursor and icon resources in files and resource entries.
490 */
491 typedef BOOL (*fnGetCIEntry)( LPVOID dir, int n,
492 int *width, int *height, int *bits );
493
494 /**********************************************************************
495 * CURSORICON_FindBestIcon
496 *
497 * Find the icon closest to the requested size and bit depth.
498 */
499 static int CURSORICON_FindBestIcon( LPVOID dir, fnGetCIEntry get_entry,
500 int width, int height, int depth )
501 {
502 int i, cx, cy, bits, bestEntry = -1;
503 UINT iTotalDiff, iXDiff=0, iYDiff=0, iColorDiff;
504 UINT iTempXDiff, iTempYDiff, iTempColorDiff;
505
506 /* Find Best Fit */
507 iTotalDiff = 0xFFFFFFFF;
508 iColorDiff = 0xFFFFFFFF;
509 for ( i = 0; get_entry( dir, i, &cx, &cy, &bits ); i++ )
510 {
511 iTempXDiff = abs(width - cx);
512 iTempYDiff = abs(height - cy);
513
514 if(iTotalDiff > (iTempXDiff + iTempYDiff))
515 {
516 iXDiff = iTempXDiff;
517 iYDiff = iTempYDiff;
518 iTotalDiff = iXDiff + iYDiff;
519 }
520 }
521
522 /* Find Best Colors for Best Fit */
523 for ( i = 0; get_entry( dir, i, &cx, &cy, &bits ); i++ )
524 {
525 if(abs(width - cx) == iXDiff && abs(height - cy) == iYDiff)
526 {
527 iTempColorDiff = abs(depth - bits);
528 if(iColorDiff > iTempColorDiff)
529 {
530 bestEntry = i;
531 iColorDiff = iTempColorDiff;
532 }
533 }
534 }
535
536 return bestEntry;
537 }
538
539 static BOOL CURSORICON_GetResIconEntry( LPVOID dir, int n,
540 int *width, int *height, int *bits )
541 {
542 CURSORICONDIR *resdir = dir;
543 ICONRESDIR *icon;
544
545 if ( resdir->idCount <= n )
546 return FALSE;
547 icon = &resdir->idEntries[n].ResInfo.icon;
548 *width = icon->bWidth;
549 *height = icon->bHeight;
550 *bits = resdir->idEntries[n].wBitCount;
551 return TRUE;
552 }
553
554 /**********************************************************************
555 * CURSORICON_FindBestCursor
556 *
557 * Find the cursor closest to the requested size.
558 *
559 * FIXME: parameter 'color' ignored.
560 */
561 static int CURSORICON_FindBestCursor( LPVOID dir, fnGetCIEntry get_entry,
562 int width, int height, int depth )
563 {
564 int i, maxwidth, maxheight, cx, cy, bits, bestEntry = -1;
565
566 /* Double height to account for AND and XOR masks */
567
568 height *= 2;
569
570 /* First find the largest one smaller than or equal to the requested size*/
571
572 maxwidth = maxheight = 0;
573 for ( i = 0; get_entry( dir, i, &cx, &cy, &bits ); i++ )
574 {
575 if ((cx <= width) && (cy <= height) &&
576 (cx > maxwidth) && (cy > maxheight))
577 {
578 bestEntry = i;
579 maxwidth = cx;
580 maxheight = cy;
581 }
582 }
583 if (bestEntry != -1) return bestEntry;
584
585 /* Now find the smallest one larger than the requested size */
586
587 maxwidth = maxheight = 255;
588 for ( i = 0; get_entry( dir, i, &cx, &cy, &bits ); i++ )
589 {
590 if (((cx < maxwidth) && (cy < maxheight)) || (bestEntry == -1))
591 {
592 bestEntry = i;
593 maxwidth = cx;
594 maxheight = cy;
595 }
596 }
597
598 return bestEntry;
599 }
600
601 static BOOL CURSORICON_GetResCursorEntry( LPVOID dir, int n,
602 int *width, int *height, int *bits )
603 {
604 CURSORICONDIR *resdir = dir;
605 CURSORDIR *cursor;
606
607 if ( resdir->idCount <= n )
608 return FALSE;
609 cursor = &resdir->idEntries[n].ResInfo.cursor;
610 *width = cursor->wWidth;
611 *height = cursor->wHeight;
612 *bits = resdir->idEntries[n].wBitCount;
613 return TRUE;
614 }
615
616 static CURSORICONDIRENTRY *CURSORICON_FindBestIconRes( CURSORICONDIR * dir,
617 int width, int height, int depth )
618 {
619 int n;
620
621 n = CURSORICON_FindBestIcon( dir, CURSORICON_GetResIconEntry,
622 width, height, depth );
623 if ( n < 0 )
624 return NULL;
625 return &dir->idEntries[n];
626 }
627
628 static CURSORICONDIRENTRY *CURSORICON_FindBestCursorRes( CURSORICONDIR *dir,
629 int width, int height, int depth )
630 {
631 int n = CURSORICON_FindBestCursor( dir, CURSORICON_GetResCursorEntry,
632 width, height, depth );
633 if ( n < 0 )
634 return NULL;
635 return &dir->idEntries[n];
636 }
637
638 static BOOL CURSORICON_GetFileEntry( LPVOID dir, int n,
639 int *width, int *height, int *bits )
640 {
641 CURSORICONFILEDIR *filedir = dir;
642 CURSORICONFILEDIRENTRY *entry;
643 BITMAPINFOHEADER *info;
644
645 if ( filedir->idCount <= n )
646 return FALSE;
647 entry = &filedir->idEntries[n];
648 /* FIXME: check against file size */
649 info = (BITMAPINFOHEADER *)((char *)dir + entry->dwDIBOffset);
650 *width = entry->bWidth;
651 *height = entry->bHeight;
652 *bits = info->biBitCount;
653 return TRUE;
654 }
655
656 static CURSORICONFILEDIRENTRY *CURSORICON_FindBestCursorFile( CURSORICONFILEDIR *dir,
657 int width, int height, int depth )
658 {
659 int n = CURSORICON_FindBestCursor( dir, CURSORICON_GetFileEntry,
660 width, height, depth );
661 if ( n < 0 )
662 return NULL;
663 return &dir->idEntries[n];
664 }
665
666 static CURSORICONFILEDIRENTRY *CURSORICON_FindBestIconFile( CURSORICONFILEDIR *dir,
667 int width, int height, int depth )
668 {
669 int n = CURSORICON_FindBestIcon( dir, CURSORICON_GetFileEntry,
670 width, height, depth );
671 if ( n < 0 )
672 return NULL;
673 return &dir->idEntries[n];
674 }
675
676 /***********************************************************************
677 * bmi_has_alpha
678 */
679 static BOOL bmi_has_alpha( const BITMAPINFO *info, const void *bits )
680 {
681 int i;
682 BOOL has_alpha = FALSE;
683 const unsigned char *ptr = bits;
684
685 if (info->bmiHeader.biBitCount != 32) return FALSE;
686 for (i = 0; i < info->bmiHeader.biWidth * abs(info->bmiHeader.biHeight); i++, ptr += 4)
687 if ((has_alpha = (ptr[3] != 0))) break;
688 return has_alpha;
689 }
690
691 /***********************************************************************
692 * create_alpha_bitmap
693 *
694 * Create the alpha bitmap for a 32-bpp icon that has an alpha channel.
695 */
696 static HBITMAP create_alpha_bitmap( HBITMAP color, HBITMAP mask,
697 const BITMAPINFO *src_info, const void *color_bits )
698 {
699 HBITMAP alpha = 0;
700 BITMAPINFO *info = NULL;
701 BITMAP bm;
702 HDC hdc;
703 void *bits;
704 unsigned char *ptr;
705 int i;
706
707 if (!GetObjectW( color, sizeof(bm), &bm )) return 0;
708 if (bm.bmBitsPixel != 32) return 0;
709
710 if (!(hdc = CreateCompatibleDC( 0 ))) return 0;
711 if (!(info = HeapAlloc( GetProcessHeap(), 0, FIELD_OFFSET( BITMAPINFO, bmiColors[256] )))) goto done;
712 info->bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
713 info->bmiHeader.biWidth = bm.bmWidth;
714 info->bmiHeader.biHeight = -bm.bmHeight;
715 info->bmiHeader.biPlanes = 1;
716 info->bmiHeader.biBitCount = 32;
717 info->bmiHeader.biCompression = BI_RGB;
718 info->bmiHeader.biSizeImage = bm.bmWidth * bm.bmHeight * 4;
719 info->bmiHeader.biXPelsPerMeter = 0;
720 info->bmiHeader.biYPelsPerMeter = 0;
721 info->bmiHeader.biClrUsed = 0;
722 info->bmiHeader.biClrImportant = 0;
723 if (!(alpha = CreateDIBSection( hdc, info, DIB_RGB_COLORS, &bits, NULL, 0 ))) goto done;
724
725 if (src_info)
726 {
727 SelectObject( hdc, alpha );
728 StretchDIBits( hdc, 0, 0, bm.bmWidth, bm.bmHeight,
729 0, 0, src_info->bmiHeader.biWidth, src_info->bmiHeader.biHeight,
730 color_bits, src_info, DIB_RGB_COLORS, SRCCOPY );
731
732 }
733 else
734 {
735 GetDIBits( hdc, color, 0, bm.bmHeight, bits, info, DIB_RGB_COLORS );
736 if (!bmi_has_alpha( info, bits ))
737 {
738 DeleteObject( alpha );
739 alpha = 0;
740 goto done;
741 }
742 }
743
744 /* pre-multiply by alpha */
745 for (i = 0, ptr = bits; i < bm.bmWidth * bm.bmHeight; i++, ptr += 4)
746 {
747 unsigned int alpha = ptr[3];
748 ptr[0] = ptr[0] * alpha / 255;
749 ptr[1] = ptr[1] * alpha / 255;
750 ptr[2] = ptr[2] * alpha / 255;
751 }
752
753 done:
754 DeleteDC( hdc );
755 HeapFree( GetProcessHeap(), 0, info );
756 return alpha;
757 }
758
759
760 /***********************************************************************
761 * create_icon_bitmaps
762 *
763 * Create the color, mask and alpha bitmaps from the DIB info.
764 */
765 static BOOL create_icon_bitmaps( const BITMAPINFO *bmi, int width, int height,
766 HBITMAP *color, HBITMAP *mask, HBITMAP *alpha )
767 {
768 BOOL monochrome = is_dib_monochrome( bmi );
769 unsigned int size = bitmap_info_size( bmi, DIB_RGB_COLORS );
770 BITMAPINFO *info;
771 void *color_bits, *mask_bits;
772 BOOL ret = FALSE;
773 HDC hdc = 0;
774
775 if (!(info = HeapAlloc( GetProcessHeap(), 0, max( size, FIELD_OFFSET( BITMAPINFO, bmiColors[2] )))))
776 return FALSE;
777 if (!(hdc = CreateCompatibleDC( 0 ))) goto done;
778
779 memcpy( info, bmi, size );
780 info->bmiHeader.biHeight /= 2;
781
782 color_bits = (char *)bmi + size;
783 mask_bits = (char *)color_bits +
784 get_dib_width_bytes( bmi->bmiHeader.biWidth,
785 bmi->bmiHeader.biBitCount ) * abs(info->bmiHeader.biHeight);
786
787 *alpha = 0;
788 if (monochrome)
789 {
790 if (!(*mask = CreateBitmap( width, height * 2, 1, 1, NULL ))) goto done;
791 *color = 0;
792
793 /* copy color data into second half of mask bitmap */
794 SelectObject( hdc, *mask );
795 StretchDIBits( hdc, 0, height, width, height,
796 0, 0, info->bmiHeader.biWidth, info->bmiHeader.biHeight,
797 color_bits, info, DIB_RGB_COLORS, SRCCOPY );
798 }
799 else
800 {
801 if (!(*mask = CreateBitmap( width, height, 1, 1, NULL ))) goto done;
802 if (!(*color = CreateBitmap( width, height, GetDeviceCaps( screen_dc, PLANES ),
803 GetDeviceCaps( screen_dc, BITSPIXEL ), NULL )))
804 {
805 DeleteObject( *mask );
806 goto done;
807 }
808 SelectObject( hdc, *color );
809 StretchDIBits( hdc, 0, 0, width, height,
810 0, 0, info->bmiHeader.biWidth, info->bmiHeader.biHeight,
811 color_bits, info, DIB_RGB_COLORS, SRCCOPY );
812
813 if (bmi_has_alpha( info, color_bits ))
814 *alpha = create_alpha_bitmap( *color, *mask, info, color_bits );
815
816 /* convert info to monochrome to copy the mask */
817 info->bmiHeader.biBitCount = 1;
818 if (info->bmiHeader.biSize != sizeof(BITMAPCOREHEADER))
819 {
820 RGBQUAD *rgb = info->bmiColors;
821
822 info->bmiHeader.biClrUsed = info->bmiHeader.biClrImportant = 2;
823 rgb[0].rgbBlue = rgb[0].rgbGreen = rgb[0].rgbRed = 0x00;
824 rgb[1].rgbBlue = rgb[1].rgbGreen = rgb[1].rgbRed = 0xff;
825 rgb[0].rgbReserved = rgb[1].rgbReserved = 0;
826 }
827 else
828 {
829 RGBTRIPLE *rgb = (RGBTRIPLE *)(((BITMAPCOREHEADER *)info) + 1);
830
831 rgb[0].rgbtBlue = rgb[0].rgbtGreen = rgb[0].rgbtRed = 0x00;
832 rgb[1].rgbtBlue = rgb[1].rgbtGreen = rgb[1].rgbtRed = 0xff;
833 }
834 }
835
836 SelectObject( hdc, *mask );
837 StretchDIBits( hdc, 0, 0, width, height,
838 0, 0, info->bmiHeader.biWidth, info->bmiHeader.biHeight,
839 mask_bits, info, DIB_RGB_COLORS, SRCCOPY );
840 ret = TRUE;
841
842 done:
843 DeleteDC( hdc );
844 HeapFree( GetProcessHeap(), 0, info );
845 return ret;
846 }
847
848 static HICON CURSORICON_CreateIconFromBMI( BITMAPINFO *bmi,
849 POINT hotspot, BOOL bIcon,
850 DWORD dwVersion,
851 INT width, INT height,
852 UINT cFlag )
853 {
854 HICON hObj;
855 HBITMAP color = 0, mask = 0, alpha = 0;
856 BOOL do_stretch;
857
858 if (dwVersion == 0x00020000)
859 {
860 FIXME_(cursor)("\t2.xx resources are not supported\n");
861 return 0;
862 }
863
864 /* Check bitmap header */
865
866 if ( (bmi->bmiHeader.biSize != sizeof(BITMAPCOREHEADER)) &&
867 (bmi->bmiHeader.biSize != sizeof(BITMAPINFOHEADER) ||
868 bmi->bmiHeader.biCompression != BI_RGB) )
869 {
870 WARN_(cursor)("\tinvalid resource bitmap header.\n");
871 return 0;
872 }
873
874 if (!width) width = bmi->bmiHeader.biWidth;
875 if (!height) height = bmi->bmiHeader.biHeight/2;
876 do_stretch = (bmi->bmiHeader.biHeight/2 != height) ||
877 (bmi->bmiHeader.biWidth != width);
878
879 /* Scale the hotspot */
880 if (bIcon)
881 {
882 hotspot.x = width / 2;
883 hotspot.y = height / 2;
884 }
885 else if (do_stretch)
886 {
887 hotspot.x = (hotspot.x * width) / bmi->bmiHeader.biWidth;
888 hotspot.y = (hotspot.y * height) / (bmi->bmiHeader.biHeight / 2);
889 }
890
891 if (!screen_dc) screen_dc = CreateDCW( DISPLAYW, NULL, NULL, NULL );
892 if (!screen_dc) return 0;
893
894 if (!create_icon_bitmaps( bmi, width, height, &color, &mask, &alpha )) return 0;
895
896 hObj = alloc_icon_handle(1);
897 if (hObj)
898 {
899 struct cursoricon_object *info = get_icon_ptr( hObj );
900
901 info->is_icon = bIcon;
902 info->hotspot = hotspot;
903 info->width = width;
904 info->height = height;
905 info->frames[0].color = color;
906 info->frames[0].mask = mask;
907 info->frames[0].alpha = alpha;
908 release_icon_ptr( hObj, info );
909 }
910 else
911 {
912 DeleteObject( color );
913 DeleteObject( alpha );
914 DeleteObject( mask );
915 }
916 return hObj;
917 }
918
919
920 /**********************************************************************
921 * .ANI cursor support
922 */
923 #define RIFF_FOURCC( c0, c1, c2, c3 ) \
924 ( (DWORD)(BYTE)(c0) | ( (DWORD)(BYTE)(c1) << 8 ) | \
925 ( (DWORD)(BYTE)(c2) << 16 ) | ( (DWORD)(BYTE)(c3) << 24 ) )
926
927 #define ANI_RIFF_ID RIFF_FOURCC('R', 'I', 'F', 'F')
928 #define ANI_LIST_ID RIFF_FOURCC('L', 'I', 'S', 'T')
929 #define ANI_ACON_ID RIFF_FOURCC('A', 'C', 'O', 'N')
930 #define ANI_anih_ID RIFF_FOURCC('a', 'n', 'i', 'h')
931 #define ANI_seq__ID RIFF_FOURCC('s', 'e', 'q', ' ')
932 #define ANI_fram_ID RIFF_FOURCC('f', 'r', 'a', 'm')
933
934 #define ANI_FLAG_ICON 0x1
935 #define ANI_FLAG_SEQUENCE 0x2
936
937 typedef struct {
938 DWORD header_size;
939 DWORD num_frames;
940 DWORD num_steps;
941 DWORD width;
942 DWORD height;
943 DWORD bpp;
944 DWORD num_planes;
945 DWORD display_rate;
946 DWORD flags;
947 } ani_header;
948
949 typedef struct {
950 DWORD data_size;
951 const unsigned char *data;
952 } riff_chunk_t;
953
954 static void dump_ani_header( const ani_header *header )
955 {
956 TRACE(" header size: %d\n", header->header_size);
957 TRACE(" frames: %d\n", header->num_frames);
958 TRACE(" steps: %d\n", header->num_steps);
959 TRACE(" width: %d\n", header->width);
960 TRACE(" height: %d\n", header->height);
961 TRACE(" bpp: %d\n", header->bpp);
962 TRACE(" planes: %d\n", header->num_planes);
963 TRACE(" display rate: %d\n", header->display_rate);
964 TRACE(" flags: 0x%08x\n", header->flags);
965 }
966
967
968 /*
969 * RIFF:
970 * DWORD "RIFF"
971 * DWORD size
972 * DWORD riff_id
973 * BYTE[] data
974 *
975 * LIST:
976 * DWORD "LIST"
977 * DWORD size
978 * DWORD list_id
979 * BYTE[] data
980 *
981 * CHUNK:
982 * DWORD chunk_id
983 * DWORD size
984 * BYTE[] data
985 */
986 static void riff_find_chunk( DWORD chunk_id, DWORD chunk_type, const riff_chunk_t *parent_chunk, riff_chunk_t *chunk )
987 {
988 const unsigned char *ptr = parent_chunk->data;
989 const unsigned char *end = parent_chunk->data + (parent_chunk->data_size - (2 * sizeof(DWORD)));
990
991 if (chunk_type == ANI_LIST_ID || chunk_type == ANI_RIFF_ID) end -= sizeof(DWORD);
992
993 while (ptr < end)
994 {
995 if ((!chunk_type && *(const DWORD *)ptr == chunk_id )
996 || (chunk_type && *(const DWORD *)ptr == chunk_type && *((const DWORD *)ptr + 2) == chunk_id ))
997 {
998 ptr += sizeof(DWORD);
999 chunk->data_size = (*(const DWORD *)ptr + 1) & ~1;
1000 ptr += sizeof(DWORD);
1001 if (chunk_type == ANI_LIST_ID || chunk_type == ANI_RIFF_ID) ptr += sizeof(DWORD);
1002 chunk->data = ptr;
1003
1004 return;
1005 }
1006
1007 ptr += sizeof(DWORD);
1008 ptr += (*(const DWORD *)ptr + 1) & ~1;
1009 ptr += sizeof(DWORD);
1010 }
1011 }
1012
1013
1014 /*
1015 * .ANI layout:
1016 *
1017 * RIFF:'ACON' RIFF chunk
1018 * |- CHUNK:'anih' Header
1019 * |- CHUNK:'seq ' Sequence information (optional)
1020 * \- LIST:'fram' Frame list
1021 * |- CHUNK:icon Cursor frames
1022 * |- CHUNK:icon
1023 * |- ...
1024 * \- CHUNK:icon
1025 */
1026 static HCURSOR CURSORICON_CreateIconFromANI( const LPBYTE bits, DWORD bits_size,
1027 INT width, INT height, INT depth )
1028 {
1029 struct cursoricon_object *info;
1030 ani_header header = {0};
1031 HCURSOR cursor = 0;
1032 UINT i, error = 0;
1033
1034 riff_chunk_t root_chunk = { bits_size, bits };
1035 riff_chunk_t ACON_chunk = {0};
1036 riff_chunk_t anih_chunk = {0};
1037 riff_chunk_t fram_chunk = {0};
1038 const unsigned char *icon_chunk;
1039 const unsigned char *icon_data;
1040
1041 TRACE("bits %p, bits_size %d\n", bits, bits_size);
1042
1043 riff_find_chunk( ANI_ACON_ID, ANI_RIFF_ID, &root_chunk, &ACON_chunk );
1044 if (!ACON_chunk.data)
1045 {
1046 ERR("Failed to get root chunk.\n");
1047 return 0;
1048 }
1049
1050 riff_find_chunk( ANI_anih_ID, 0, &ACON_chunk, &anih_chunk );
1051 if (!anih_chunk.data)
1052 {
1053 ERR("Failed to get 'anih' chunk.\n");
1054 return 0;
1055 }
1056 memcpy( &header, anih_chunk.data, sizeof(header) );
1057 dump_ani_header( &header );
1058
1059 riff_find_chunk( ANI_fram_ID, ANI_LIST_ID, &ACON_chunk, &fram_chunk );
1060 if (!fram_chunk.data)
1061 {
1062 ERR("Failed to get icon list.\n");
1063 return 0;
1064 }
1065
1066 cursor = alloc_icon_handle( header.num_frames );
1067 if (!cursor) return 0;
1068
1069 info = get_icon_ptr( cursor );
1070 info->is_icon = FALSE;
1071
1072 /* The .ANI stores the display rate in 1/60s, we store the delay between frames in ms */
1073 info->ms_delay = (100 * header.display_rate) / 6;
1074
1075 icon_chunk = fram_chunk.data;
1076 icon_data = fram_chunk.data + (2 * sizeof(DWORD));
1077 for (i=0; i<header.num_frames; i++)
1078 {
1079 DWORD chunk_size = *(DWORD *)(icon_chunk + sizeof(DWORD));
1080 struct cursoricon_frame *frame = &info->frames[i];
1081 CURSORICONFILEDIRENTRY *entry;
1082 BITMAPINFO *bmi;
1083
1084 entry = CURSORICON_FindBestIconFile( (CURSORICONFILEDIR *) icon_data,
1085 width, height, depth );
1086
1087 bmi = (BITMAPINFO *) (icon_data + entry->dwDIBOffset);
1088 info->hotspot.x = entry->xHotspot;
1089 info->hotspot.y = entry->yHotspot;
1090 if (!header.width || !header.height)
1091 {
1092 header.width = entry->bWidth;
1093 header.height = entry->bHeight;
1094 }
1095
1096 /* Grab a frame from the animation */
1097 if (!create_icon_bitmaps( bmi, header.width, header.height,
1098 &frame->color, &frame->mask, &frame->alpha ))
1099 {
1100 FIXME_(cursor)("failed to convert animated cursor frame.\n");
1101 error = TRUE;
1102 if (i == 0)
1103 {
1104 FIXME_(cursor)("Completely failed to create animated cursor!\n");
1105 info->num_frames = 0;
1106 release_icon_ptr( cursor, info );
1107 free_icon_handle( cursor );
1108 return 0;
1109 }
1110 break;
1111 }
1112
1113 /* Advance to the next chunk */
1114 icon_chunk += chunk_size + (2 * sizeof(DWORD));
1115 icon_data = icon_chunk + (2 * sizeof(DWORD));
1116 }
1117
1118 /* There was an error but we at least decoded the first frame, so just use that frame */
1119 if (error)
1120 {
1121 FIXME_(cursor)("Error creating animated cursor, only using first frame!\n");
1122 for (i=1; i<info->num_frames; i++)
1123 {
1124 if (info->frames[i].mask) DeleteObject( info->frames[i].mask );
1125 if (info->frames[i].color) DeleteObject( info->frames[i].color );
1126 if (info->frames[i].alpha) DeleteObject( info->frames[i].alpha );
1127 }
1128 info->num_frames = 1;
1129 info->ms_delay = 0;
1130 }
1131 info->width = header.width;
1132 info->height = header.height;
1133 release_icon_ptr( cursor, info );
1134
1135 return cursor;
1136 }
1137
1138
1139 /**********************************************************************
1140 * CreateIconFromResourceEx (USER32.@)
1141 *
1142 * FIXME: Convert to mono when cFlag is LR_MONOCHROME. Do something
1143 * with cbSize parameter as well.
1144 */
1145 HICON WINAPI CreateIconFromResourceEx( LPBYTE bits, UINT cbSize,
1146 BOOL bIcon, DWORD dwVersion,
1147 INT width, INT height,
1148 UINT cFlag )
1149 {
1150 POINT hotspot;
1151 BITMAPINFO *bmi;
1152 HICON icon;
1153
1154 TRACE_(cursor)("%p (%u bytes), ver %08x, %ix%i %s %s\n",
1155 bits, cbSize, dwVersion, width, height,
1156 bIcon ? "icon" : "cursor", (cFlag & LR_MONOCHROME) ? "mono" : "" );
1157
1158 if (!bits) return 0;
1159
1160 if (bIcon)
1161 {
1162 hotspot.x = width / 2;
1163 hotspot.y = height / 2;
1164 bmi = (BITMAPINFO *)bits;
1165 }
1166 else /* get the hotspot */
1167 {
1168 SHORT *pt = (SHORT *)bits;
1169 hotspot.x = pt[0];
1170 hotspot.y = pt[1];
1171 bmi = (BITMAPINFO *)(pt + 2);
1172 }
1173
1174 icon = CURSORICON_CreateIconFromBMI( bmi, hotspot, bIcon, dwVersion,
1175 width, height, cFlag );
1176 if (icon) USER_Driver->pCreateCursorIcon( icon );
1177 return icon;
1178 }
1179
1180
1181 /**********************************************************************
1182 * CreateIconFromResource (USER32.@)
1183 */
1184 HICON WINAPI CreateIconFromResource( LPBYTE bits, UINT cbSize,
1185 BOOL bIcon, DWORD dwVersion)
1186 {
1187 return CreateIconFromResourceEx( bits, cbSize, bIcon, dwVersion, 0,0,0);
1188 }
1189
1190
1191 static HICON CURSORICON_LoadFromFile( LPCWSTR filename,
1192 INT width, INT height, INT depth,
1193 BOOL fCursor, UINT loadflags)
1194 {
1195 CURSORICONFILEDIRENTRY *entry;
1196 CURSORICONFILEDIR *dir;
1197 DWORD filesize = 0;
1198 HICON hIcon = 0;
1199 LPBYTE bits;
1200 POINT hotspot;
1201
1202 TRACE("loading %s\n", debugstr_w( filename ));
1203
1204 bits = map_fileW( filename, &filesize );
1205 if (!bits)
1206 return hIcon;
1207
1208 /* Check for .ani. */
1209 if (memcmp( bits, "RIFF", 4 ) == 0)
1210 {
1211 hIcon = CURSORICON_CreateIconFromANI( bits, filesize, width, height,
1212 depth );
1213 goto end;
1214 }
1215
1216 dir = (CURSORICONFILEDIR*) bits;
1217 if ( filesize < sizeof(*dir) )
1218 goto end;
1219
1220 if ( filesize < (sizeof(*dir) + sizeof(dir->idEntries[0])*(dir->idCount-1)) )
1221 goto end;
1222
1223 if ( fCursor )
1224 entry = CURSORICON_FindBestCursorFile( dir, width, height, depth );
1225 else
1226 entry = CURSORICON_FindBestIconFile( dir, width, height, depth );
1227
1228 if ( !entry )
1229 goto end;
1230
1231 /* check that we don't run off the end of the file */
1232 if ( entry->dwDIBOffset > filesize )
1233 goto end;
1234 if ( entry->dwDIBOffset + entry->dwDIBSize > filesize )
1235 goto end;
1236
1237 hotspot.x = entry->xHotspot;
1238 hotspot.y = entry->yHotspot;
1239 hIcon = CURSORICON_CreateIconFromBMI( (BITMAPINFO *)&bits[entry->dwDIBOffset],
1240 hotspot, !fCursor, 0x00030000,
1241 width, height, loadflags );
1242 end:
1243 TRACE("loaded %s -> %p\n", debugstr_w( filename ), hIcon );
1244 UnmapViewOfFile( bits );
1245 if (hIcon) USER_Driver->pCreateCursorIcon( hIcon );
1246 return hIcon;
1247 }
1248
1249 /**********************************************************************
1250 * CURSORICON_Load
1251 *
1252 * Load a cursor or icon from resource or file.
1253 */
1254 static HICON CURSORICON_Load(HINSTANCE hInstance, LPCWSTR name,
1255 INT width, INT height, INT depth,
1256 BOOL fCursor, UINT loadflags)
1257 {
1258 HANDLE handle = 0;
1259 HICON hIcon = 0;
1260 HRSRC hRsrc, hGroupRsrc;
1261 CURSORICONDIR *dir;
1262 CURSORICONDIRENTRY *dirEntry;
1263 LPBYTE bits;
1264 WORD wResId;
1265 DWORD dwBytesInRes;
1266
1267 TRACE("%p, %s, %dx%d, depth %d, fCursor %d, flags 0x%04x\n",
1268 hInstance, debugstr_w(name), width, height, depth, fCursor, loadflags);
1269
1270 if ( loadflags & LR_LOADFROMFILE ) /* Load from file */
1271 return CURSORICON_LoadFromFile( name, width, height, depth, fCursor, loadflags );
1272
1273 if (!hInstance) hInstance = user32_module; /* Load OEM cursor/icon */
1274
1275 /* don't cache 16-bit instances (FIXME: should never get 16-bit instances in the first place) */
1276 if ((ULONG_PTR)hInstance >> 16 == 0) loadflags &= ~LR_SHARED;
1277
1278 /* Get directory resource ID */
1279
1280 if (!(hRsrc = FindResourceW( hInstance, name,
1281 (LPWSTR)(fCursor ? RT_GROUP_CURSOR : RT_GROUP_ICON) )))
1282 return 0;
1283 hGroupRsrc = hRsrc;
1284
1285 /* Find the best entry in the directory */
1286
1287 if (!(handle = LoadResource( hInstance, hRsrc ))) return 0;
1288 if (!(dir = LockResource( handle ))) return 0;
1289 if (fCursor)
1290 dirEntry = CURSORICON_FindBestCursorRes( dir, width, height, depth );
1291 else
1292 dirEntry = CURSORICON_FindBestIconRes( dir, width, height, depth );
1293 if (!dirEntry) return 0;
1294 wResId = dirEntry->wResId;
1295 dwBytesInRes = dirEntry->dwBytesInRes;
1296 FreeResource( handle );
1297
1298 /* Load the resource */
1299
1300 if (!(hRsrc = FindResourceW(hInstance,MAKEINTRESOURCEW(wResId),
1301 (LPWSTR)(fCursor ? RT_CURSOR : RT_ICON) ))) return 0;
1302
1303 /* If shared icon, check whether it was already loaded */
1304 if ( (loadflags & LR_SHARED)
1305 && (hIcon = CURSORICON_FindSharedIcon( hInstance, hRsrc ) ) != 0 )
1306 return hIcon;
1307
1308 if (!(handle = LoadResource( hInstance, hRsrc ))) return 0;
1309 bits = LockResource( handle );
1310 hIcon = CreateIconFromResourceEx( bits, dwBytesInRes,
1311 !fCursor, 0x00030000, width, height, loadflags);
1312 FreeResource( handle );
1313
1314 /* If shared icon, add to icon cache */
1315
1316 if ( hIcon && (loadflags & LR_SHARED) )
1317 CURSORICON_AddSharedIcon( hInstance, hRsrc, hGroupRsrc, hIcon );
1318
1319 return hIcon;
1320 }
1321
1322
1323 /*************************************************************************
1324 * CURSORICON_ExtCopy
1325 *
1326 * Copies an Image from the Cache if LR_COPYFROMRESOURCE is specified
1327 *
1328 * PARAMS
1329 * Handle [I] handle to an Image
1330 * nType [I] Type of Handle (IMAGE_CURSOR | IMAGE_ICON)
1331 * iDesiredCX [I] The Desired width of the Image
1332 * iDesiredCY [I] The desired height of the Image
1333 * nFlags [I] The flags from CopyImage
1334 *
1335 * RETURNS
1336 * Success: The new handle of the Image
1337 *
1338 * NOTES
1339 * LR_COPYDELETEORG and LR_MONOCHROME are currently not implemented.
1340 * LR_MONOCHROME should be implemented by CreateIconFromResourceEx.
1341 * LR_COPYFROMRESOURCE will only work if the Image is in the Cache.
1342 *
1343 *
1344 */
1345
1346 static HICON CURSORICON_ExtCopy(HICON hIcon, UINT nType,
1347 INT iDesiredCX, INT iDesiredCY,
1348 UINT nFlags)
1349 {
1350 HICON hNew=0;
1351
1352 TRACE_(icon)("hIcon %p, nType %u, iDesiredCX %i, iDesiredCY %i, nFlags %u\n",
1353 hIcon, nType, iDesiredCX, iDesiredCY, nFlags);
1354
1355 if(hIcon == 0)
1356 {
1357 return 0;
1358 }
1359
1360 /* Best Fit or Monochrome */
1361 if( (nFlags & LR_COPYFROMRESOURCE
1362 && (iDesiredCX > 0 || iDesiredCY > 0))
1363 || nFlags & LR_MONOCHROME)
1364 {
1365 ICONCACHE* pIconCache = CURSORICON_FindCache(hIcon);
1366
1367 /* Not Found in Cache, then do a straight copy
1368 */
1369 if(pIconCache == NULL)
1370 {
1371 hNew = CopyIcon( hIcon );
1372 if(nFlags & LR_COPYFROMRESOURCE)
1373 {
1374 TRACE_(icon)("LR_COPYFROMRESOURCE: Failed to load from cache\n");
1375 }
1376 }
1377 else
1378 {
1379 int iTargetCY = iDesiredCY, iTargetCX = iDesiredCX;
1380 LPBYTE pBits;
1381 HANDLE hMem;
1382 HRSRC hRsrc;
1383 DWORD dwBytesInRes;
1384 WORD wResId;
1385 CURSORICONDIR *pDir;
1386 CURSORICONDIRENTRY *pDirEntry;
1387 BOOL bIsIcon = (nType == IMAGE_ICON);
1388
1389 /* Completing iDesiredCX CY for Monochrome Bitmaps if needed
1390 */
1391 if(((nFlags & LR_MONOCHROME) && !(nFlags & LR_COPYFROMRESOURCE))
1392 || (iDesiredCX == 0 && iDesiredCY == 0))
1393 {
1394 iDesiredCY = GetSystemMetrics(bIsIcon ?
1395 SM_CYICON : SM_CYCURSOR);
1396 iDesiredCX = GetSystemMetrics(bIsIcon ?
1397 SM_CXICON : SM_CXCURSOR);
1398 }
1399
1400 /* Retrieve the CURSORICONDIRENTRY
1401 */
1402 if (!(hMem = LoadResource( pIconCache->hModule ,
1403 pIconCache->hGroupRsrc)))
1404 {
1405 return 0;
1406 }
1407 if (!(pDir = LockResource( hMem )))
1408 {
1409 return 0;
1410 }
1411
1412 /* Find Best Fit
1413 */
1414 if(bIsIcon)
1415 {
1416 pDirEntry = CURSORICON_FindBestIconRes(
1417 pDir, iDesiredCX, iDesiredCY, 256 );
1418 }
1419 else
1420 {
1421 pDirEntry = CURSORICON_FindBestCursorRes(
1422 pDir, iDesiredCX, iDesiredCY, 1);
1423 }
1424
1425 wResId = pDirEntry->wResId;
1426 dwBytesInRes = pDirEntry->dwBytesInRes;
1427 FreeResource(hMem);
1428
1429 TRACE_(icon)("ResID %u, BytesInRes %u, Width %d, Height %d DX %d, DY %d\n",
1430 wResId, dwBytesInRes, pDirEntry->ResInfo.icon.bWidth,
1431 pDirEntry->ResInfo.icon.bHeight, iDesiredCX, iDesiredCY);
1432
1433 /* Get the Best Fit
1434 */
1435 if (!(hRsrc = FindResourceW(pIconCache->hModule ,
1436 MAKEINTRESOURCEW(wResId), (LPWSTR)(bIsIcon ? RT_ICON : RT_CURSOR))))
1437 {
1438 return 0;
1439 }
1440 if (!(hMem = LoadResource( pIconCache->hModule , hRsrc )))
1441 {
1442 return 0;
1443 }
1444
1445 pBits = LockResource( hMem );
1446
1447 if(nFlags & LR_DEFAULTSIZE)
1448 {
1449 iTargetCY = GetSystemMetrics(SM_CYICON);
1450 iTargetCX = GetSystemMetrics(SM_CXICON);
1451 }
1452
1453 /* Create a New Icon with the proper dimension
1454 */
1455 hNew = CreateIconFromResourceEx( pBits, dwBytesInRes,
1456 bIsIcon, 0x00030000, iTargetCX, iTargetCY, nFlags);
1457 FreeResource(hMem);
1458 }
1459 }
1460 else hNew = CopyIcon( hIcon );
1461 return hNew;
1462 }
1463
1464
1465 /***********************************************************************
1466 * CreateCursor (USER32.@)
1467 */
1468 HCURSOR WINAPI CreateCursor( HINSTANCE hInstance,
1469 INT xHotSpot, INT yHotSpot,
1470 INT nWidth, INT nHeight,
1471 LPCVOID lpANDbits, LPCVOID lpXORbits )
1472 {
1473 ICONINFO info;
1474 HCURSOR hCursor;
1475
1476 TRACE_(cursor)("%dx%d spot=%d,%d xor=%p and=%p\n",
1477 nWidth, nHeight, xHotSpot, yHotSpot, lpXORbits, lpANDbits);
1478
1479 info.fIcon = FALSE;
1480 info.xHotspot = xHotSpot;
1481 info.yHotspot = yHotSpot;
1482 info.hbmMask = CreateBitmap( nWidth, nHeight, 1, 1, lpANDbits );
1483 info.hbmColor = CreateBitmap( nWidth, nHeight, 1, 1, lpXORbits );
1484 hCursor = CreateIconIndirect( &info );
1485 DeleteObject( info.hbmMask );
1486 DeleteObject( info.hbmColor );
1487 return hCursor;
1488 }
1489
1490
1491 /***********************************************************************
1492 * CreateIcon (USER32.@)
1493 *
1494 * Creates an icon based on the specified bitmaps. The bitmaps must be
1495 * provided in a device dependent format and will be resized to
1496 * (SM_CXICON,SM_CYICON) and depth converted to match the screen's color
1497 * depth. The provided bitmaps must be top-down bitmaps.
1498 * Although Windows does not support 15bpp(*) this API must support it
1499 * for Winelib applications.
1500 *
1501 * (*) Windows does not support 15bpp but it supports the 555 RGB 16bpp
1502 * format!
1503 *
1504 * RETURNS
1505 * Success: handle to an icon
1506 * Failure: NULL
1507 *
1508 * FIXME: Do we need to resize the bitmaps?
1509 */
1510 HICON WINAPI CreateIcon(
1511 HINSTANCE hInstance, /* [in] the application's hInstance */
1512 INT nWidth, /* [in] the width of the provided bitmaps */
1513 INT nHeight, /* [in] the height of the provided bitmaps */
1514 BYTE bPlanes, /* [in] the number of planes in the provided bitmaps */
1515 BYTE bBitsPixel, /* [in] the number of bits per pixel of the lpXORbits bitmap */
1516 LPCVOID lpANDbits, /* [in] a monochrome bitmap representing the icon's mask */
1517 LPCVOID lpXORbits) /* [in] the icon's 'color' bitmap */
1518 {
1519 ICONINFO iinfo;
1520 HICON hIcon;
1521
1522 TRACE_(icon)("%dx%d, planes %d, bpp %d, xor %p, and %p\n",
1523 nWidth, nHeight, bPlanes, bBitsPixel, lpXORbits, lpANDbits);
1524
1525 iinfo.fIcon = TRUE;
1526 iinfo.xHotspot = nWidth / 2;
1527 iinfo.yHotspot = nHeight / 2;
1528 iinfo.hbmMask = CreateBitmap( nWidth, nHeight, 1, 1, lpANDbits );
1529 iinfo.hbmColor = CreateBitmap( nWidth, nHeight, bPlanes, bBitsPixel, lpXORbits );
1530
1531 hIcon = CreateIconIndirect( &iinfo );
1532
1533 DeleteObject( iinfo.hbmMask );
1534 DeleteObject( iinfo.hbmColor );
1535
1536 return hIcon;
1537 }
1538
1539
1540 /***********************************************************************
1541 * CopyIcon (USER32.@)
1542 */
1543 HICON WINAPI CopyIcon( HICON hIcon )
1544 {
1545 struct cursoricon_object *ptrOld, *ptrNew;
1546 HICON hNew;
1547
1548 if (!(ptrOld = get_icon_ptr( hIcon ))) return 0;
1549 if ((hNew = alloc_icon_handle(1)))
1550 {
1551 ptrNew = get_icon_ptr( hNew );
1552 ptrNew->is_icon = ptrOld->is_icon;
1553 ptrNew->width = ptrOld->width;
1554 ptrNew->height = ptrOld->height;
1555 ptrNew->hotspot = ptrOld->hotspot;
1556 ptrNew->frames[0].mask = copy_bitmap( ptrOld->frames[0].mask );
1557 ptrNew->frames[0].color = copy_bitmap( ptrOld->frames[0].color );
1558 ptrNew->frames[0].alpha = copy_bitmap( ptrOld->frames[0].alpha );
1559 release_icon_ptr( hNew, ptrNew );
1560 }
1561 release_icon_ptr( hIcon, ptrOld );
1562 if (hNew) USER_Driver->pCreateCursorIcon( hNew );
1563 return hNew;
1564 }
1565
1566
1567 /***********************************************************************
1568 * DestroyIcon (USER32.@)
1569 */
1570 BOOL WINAPI DestroyIcon( HICON hIcon )
1571 {
1572 TRACE_(icon)("%p\n", hIcon );
1573
1574 if (!CURSORICON_FindCache( hIcon )) free_icon_handle( hIcon );
1575 return TRUE;
1576 }
1577
1578
1579 /***********************************************************************
1580 * DestroyCursor (USER32.@)
1581 */
1582 BOOL WINAPI DestroyCursor( HCURSOR hCursor )
1583 {
1584 if (GetCursor() == hCursor)
1585 {
1586 WARN_(cursor)("Destroying active cursor!\n" );
1587 return FALSE;
1588 }
1589 return DestroyIcon( hCursor );
1590 }
1591
1592 /***********************************************************************
1593 * DrawIcon (USER32.@)
1594 */
1595 BOOL WINAPI DrawIcon( HDC hdc, INT x, INT y, HICON hIcon )
1596 {
1597 return DrawIconEx( hdc, x, y, hIcon, 0, 0, 0, 0, DI_NORMAL | DI_COMPAT | DI_DEFAULTSIZE );
1598 }
1599
1600 /***********************************************************************
1601 * SetCursor (USER32.@)
1602 *
1603 * Set the cursor shape.
1604 *
1605 * RETURNS
1606 * A handle to the previous cursor shape.
1607 */
1608 HCURSOR WINAPI DECLSPEC_HOTPATCH SetCursor( HCURSOR hCursor /* [in] Handle of cursor to show */ )
1609 {
1610 HCURSOR hOldCursor;
1611 int show_count;
1612 BOOL ret;
1613
1614 TRACE("%p\n", hCursor);
1615
1616 SERVER_START_REQ( set_cursor )
1617 {
1618 req->flags = SET_CURSOR_HANDLE;
1619 req->handle = wine_server_user_handle( hCursor );
1620 if ((ret = !wine_server_call_err( req )))
1621 {
1622 hOldCursor = wine_server_ptr_handle( reply->prev_handle );
1623 show_count = reply->prev_count;
1624 }
1625 }
1626 SERVER_END_REQ;
1627
1628 if (!ret) return 0;
1629
1630 /* Change the cursor shape only if it is visible */
1631 if (show_count >= 0 && hOldCursor != hCursor) USER_Driver->pSetCursor( hCursor );
1632 return hOldCursor;
1633 }
1634
1635 /***********************************************************************
1636 * ShowCursor (USER32.@)
1637 */
1638 INT WINAPI DECLSPEC_HOTPATCH ShowCursor( BOOL bShow )
1639 {
1640 HCURSOR cursor;
1641 int increment = bShow ? 1 : -1;
1642 int count;
1643
1644 SERVER_START_REQ( set_cursor )
1645 {
1646 req->flags = SET_CURSOR_COUNT;
1647 req->show_count = increment;
1648 wine_server_call( req );
1649 cursor = wine_server_ptr_handle( reply->prev_handle );
1650 count = reply->prev_count + increment;
1651 }
1652 SERVER_END_REQ;
1653
1654 TRACE("%d, count=%d\n", bShow, count );
1655
1656 if (bShow && !count) USER_Driver->pSetCursor( cursor );
1657 else if (!bShow && count == -1) USER_Driver->pSetCursor( 0 );
1658
1659 return count;
1660 }
1661
1662 /***********************************************************************
1663 * GetCursor (USER32.@)
1664 */
1665 HCURSOR WINAPI GetCursor(void)
1666 {
1667 HCURSOR ret;
1668
1669 SERVER_START_REQ( set_cursor )
1670 {
1671 req->flags = 0;
1672 wine_server_call( req );
1673 ret = wine_server_ptr_handle( reply->prev_handle );
1674 }
1675 SERVER_END_REQ;
1676 return ret;
1677 }
1678
1679
1680 /***********************************************************************
1681 * ClipCursor (USER32.@)
1682 */
1683 BOOL WINAPI DECLSPEC_HOTPATCH ClipCursor( const RECT *rect )
1684 {
1685 RECT virt;
1686
1687 SetRect( &virt, 0, 0, GetSystemMetrics( SM_CXVIRTUALSCREEN ),
1688 GetSystemMetrics( SM_CYVIRTUALSCREEN ) );
1689 OffsetRect( &virt, GetSystemMetrics( SM_XVIRTUALSCREEN ),
1690 GetSystemMetrics( SM_YVIRTUALSCREEN ) );
1691
1692 TRACE( "Clipping to: %s was: %s screen: %s\n", wine_dbgstr_rect(rect),
1693 wine_dbgstr_rect(&CURSOR_ClipRect), wine_dbgstr_rect(&virt) );
1694
1695 if (!IntersectRect( &CURSOR_ClipRect, &virt, rect ))
1696 CURSOR_ClipRect = virt;
1697
1698 USER_Driver->pClipCursor( rect );
1699 return TRUE;
1700 }
1701
1702
1703 /***********************************************************************
1704 * GetClipCursor (USER32.@)
1705 */
1706 BOOL WINAPI DECLSPEC_HOTPATCH GetClipCursor( RECT *rect )
1707 {
1708 /* If this is first time - initialize the rect */
1709 if (IsRectEmpty( &CURSOR_ClipRect )) ClipCursor( NULL );
1710
1711 return CopyRect( rect, &CURSOR_ClipRect );
1712 }
1713
1714
1715 /***********************************************************************
1716 * SetSystemCursor (USER32.@)
1717 */
1718 BOOL WINAPI SetSystemCursor(HCURSOR hcur, DWORD id)
1719 {
1720 FIXME("(%p,%08x),stub!\n", hcur, id);
1721 return TRUE;
1722 }
1723
1724
1725 /**********************************************************************
1726 * LookupIconIdFromDirectoryEx (USER32.@)
1727 */
1728 INT WINAPI LookupIconIdFromDirectoryEx( LPBYTE xdir, BOOL bIcon,
1729 INT width, INT height, UINT cFlag )
1730 {
1731 CURSORICONDIR *dir = (CURSORICONDIR*)xdir;
1732 UINT retVal = 0;
1733 if( dir && !dir->idReserved && (dir->idType & 3) )
1734 {
1735 CURSORICONDIRENTRY* entry;
1736
1737 const HDC hdc = GetDC(0);
1738 const int depth = (cFlag & LR_MONOCHROME) ?
1739 1 : GetDeviceCaps(hdc, BITSPIXEL);
1740 ReleaseDC(0, hdc);
1741
1742 if( bIcon )
1743 entry = CURSORICON_FindBestIconRes( dir, width, height, depth );
1744 else
1745 entry = CURSORICON_FindBestCursorRes( dir, width, height, depth );
1746
1747 if( entry ) retVal = entry->wResId;
1748 }
1749 else WARN_(cursor)("invalid resource directory\n");
1750 return retVal;
1751 }
1752
1753 /**********************************************************************
1754 * LookupIconIdFromDirectory (USER32.@)
1755 */
1756 INT WINAPI LookupIconIdFromDirectory( LPBYTE dir, BOOL bIcon )
1757 {
1758 return LookupIconIdFromDirectoryEx( dir, bIcon,
1759 bIcon ? GetSystemMetrics(SM_CXICON) : GetSystemMetrics(SM_CXCURSOR),
1760 bIcon ? GetSystemMetrics(SM_CYICON) : GetSystemMetrics(SM_CYCURSOR), bIcon ? 0 : LR_MONOCHROME );
1761 }
1762
1763 /***********************************************************************
1764 * LoadCursorW (USER32.@)
1765 */
1766 HCURSOR WINAPI LoadCursorW(HINSTANCE hInstance, LPCWSTR name)
1767 {
1768 TRACE("%p, %s\n", hInstance, debugstr_w(name));
1769
1770 return LoadImageW( hInstance, name, IMAGE_CURSOR, 0, 0,
1771 LR_SHARED | LR_DEFAULTSIZE );
1772 }
1773
1774 /***********************************************************************
1775 * LoadCursorA (USER32.@)
1776 */
1777 HCURSOR WINAPI LoadCursorA(HINSTANCE hInstance, LPCSTR name)
1778 {
1779 TRACE("%p, %s\n", hInstance, debugstr_a(name));
1780
1781 return LoadImageA( hInstance, name, IMAGE_CURSOR, 0, 0,
1782 LR_SHARED | LR_DEFAULTSIZE );
1783 }
1784
1785 /***********************************************************************
1786 * LoadCursorFromFileW (USER32.@)
1787 */
1788 HCURSOR WINAPI LoadCursorFromFileW (LPCWSTR name)
1789 {
1790 TRACE("%s\n", debugstr_w(name));
1791
1792 return LoadImageW( 0, name, IMAGE_CURSOR, 0, 0,
1793 LR_LOADFROMFILE | LR_DEFAULTSIZE );
1794 }
1795
1796 /***********************************************************************
1797 * LoadCursorFromFileA (USER32.@)
1798 */
1799 HCURSOR WINAPI LoadCursorFromFileA (LPCSTR name)
1800 {
1801 TRACE("%s\n", debugstr_a(name));
1802
1803 return LoadImageA( 0, name, IMAGE_CURSOR, 0, 0,
1804 LR_LOADFROMFILE | LR_DEFAULTSIZE );
1805 }
1806
1807 /***********************************************************************
1808 * LoadIconW (USER32.@)
1809 */
1810 HICON WINAPI LoadIconW(HINSTANCE hInstance, LPCWSTR name)
1811 {
1812 TRACE("%p, %s\n", hInstance, debugstr_w(name));
1813
1814 return LoadImageW( hInstance, name, IMAGE_ICON, 0, 0,
1815 LR_SHARED | LR_DEFAULTSIZE );
1816 }
1817
1818 /***********************************************************************
1819 * LoadIconA (USER32.@)
1820 */
1821 HICON WINAPI LoadIconA(HINSTANCE hInstance, LPCSTR name)
1822 {
1823 TRACE("%p, %s\n", hInstance, debugstr_a(name));
1824
1825 return LoadImageA( hInstance, name, IMAGE_ICON, 0, 0,
1826 LR_SHARED | LR_DEFAULTSIZE );
1827 }
1828
1829 /**********************************************************************
1830 * GetIconInfo (USER32.@)
1831 */
1832 BOOL WINAPI GetIconInfo(HICON hIcon, PICONINFO iconinfo)
1833 {
1834 ICONINFOEXW infoW;
1835
1836 infoW.cbSize = sizeof(infoW);
1837 if (!GetIconInfoExW( hIcon, &infoW )) return FALSE;
1838 iconinfo->fIcon = infoW.fIcon;
1839 iconinfo->xHotspot = infoW.xHotspot;
1840 iconinfo->yHotspot = infoW.yHotspot;
1841 iconinfo->hbmColor = infoW.hbmColor;
1842 iconinfo->hbmMask = infoW.hbmMask;
1843 return TRUE;
1844 }
1845
1846 /**********************************************************************
1847 * GetIconInfoExA (USER32.@)
1848 */
1849 BOOL WINAPI GetIconInfoExA( HICON icon, ICONINFOEXA *info )
1850 {
1851 ICONINFOEXW infoW;
1852
1853 if (info->cbSize != sizeof(*info))
1854 {
1855 SetLastError( ERROR_INVALID_PARAMETER );
1856 return FALSE;
1857 }
1858 infoW.cbSize = sizeof(infoW);
1859 if (!GetIconInfoExW( icon, &infoW )) return FALSE;
1860 info->fIcon = infoW.fIcon;
1861 info->xHotspot = infoW.xHotspot;
1862 info->yHotspot = infoW.yHotspot;
1863 info->hbmColor = infoW.hbmColor;
1864 info->hbmMask = infoW.hbmMask;
1865 info->wResID = infoW.wResID;
1866 WideCharToMultiByte( CP_ACP, 0, infoW.szModName, -1, info->szModName, MAX_PATH, NULL, NULL );
1867 WideCharToMultiByte( CP_ACP, 0, infoW.szResName, -1, info->szResName, MAX_PATH, NULL, NULL );
1868 return TRUE;
1869 }
1870
1871 /**********************************************************************
1872 * GetIconInfoExW (USER32.@)
1873 */
1874 BOOL WINAPI GetIconInfoExW( HICON icon, ICONINFOEXW *info )
1875 {
1876 struct cursoricon_object *ptr;
1877
1878 if (info->cbSize != sizeof(*info))
1879 {
1880 SetLastError( ERROR_INVALID_PARAMETER );
1881 return FALSE;
1882 }
1883 if (!(ptr = get_icon_ptr( icon )))
1884 {
1885 SetLastError( ERROR_INVALID_CURSOR_HANDLE );
1886 return FALSE;
1887 }
1888
1889 TRACE("%p => %dx%d\n", icon, ptr->width, ptr->height);
1890
1891 info->fIcon = ptr->is_icon;
1892 info->xHotspot = ptr->hotspot.x;
1893 info->yHotspot = ptr->hotspot.y;
1894 info->hbmColor = copy_bitmap( ptr->frames[0].color );
1895 info->hbmMask = copy_bitmap( ptr->frames[0].mask );
1896 info->wResID = 0; /* FIXME */
1897 info->szModName[0] = 0; /* FIXME */
1898 info->szResName[0] = 0; /* FIXME */
1899 release_icon_ptr( icon, ptr );
1900 return TRUE;
1901 }
1902
1903 /* copy an icon bitmap, even when it can't be selected into a DC */
1904 /* helper for CreateIconIndirect */
1905 static void stretch_blt_icon( HDC hdc_dst, int dst_x, int dst_y, int dst_width, int dst_height,
1906 HBITMAP src, int width, int height )
1907 {
1908 HDC hdc = CreateCompatibleDC( 0 );
1909
1910 if (!SelectObject( hdc, src )) /* do it the hard way */
1911 {
1912 BITMAPINFO *info;
1913 void *bits;
1914
1915 if (!(info = HeapAlloc( GetProcessHeap(), 0, FIELD_OFFSET( BITMAPINFO, bmiColors[256] )))) return;
1916 info->bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
1917 info->bmiHeader.biWidth = width;
1918 info->bmiHeader.biHeight = height;
1919 info->bmiHeader.biPlanes = GetDeviceCaps( hdc_dst, PLANES );
1920 info->bmiHeader.biBitCount = GetDeviceCaps( hdc_dst, BITSPIXEL );
1921 info->bmiHeader.biCompression = BI_RGB;
1922 info->bmiHeader.biSizeImage = height * get_dib_width_bytes( width, info->bmiHeader.biBitCount );
1923 info->bmiHeader.biXPelsPerMeter = 0;
1924 info->bmiHeader.biYPelsPerMeter = 0;
1925 info->bmiHeader.biClrUsed = 0;
1926 info->bmiHeader.biClrImportant = 0;
1927 bits = HeapAlloc( GetProcessHeap(), 0, info->bmiHeader.biSizeImage );
1928 if (bits && GetDIBits( hdc, src, 0, height, bits, info, DIB_RGB_COLORS ))
1929 StretchDIBits( hdc_dst, dst_x, dst_y, dst_width, dst_height,
1930 0, 0, width, height, bits, info, DIB_RGB_COLORS, SRCCOPY );
1931
1932 HeapFree( GetProcessHeap(), 0, bits );
1933 HeapFree( GetProcessHeap(), 0, info );
1934 }
1935 else StretchBlt( hdc_dst, dst_x, dst_y, dst_width, dst_height, hdc, 0, 0, width, height, SRCCOPY );
1936
1937 DeleteDC( hdc );
1938 }
1939
1940 /**********************************************************************
1941 * CreateIconIndirect (USER32.@)
1942 */
1943 HICON WINAPI CreateIconIndirect(PICONINFO iconinfo)
1944 {
1945 BITMAP bmpXor, bmpAnd;
1946 HICON hObj;
1947 HBITMAP color = 0, mask;
1948 int width, height;
1949 HDC hdc;
1950
1951 TRACE("color %p, mask %p, hotspot %ux%u, fIcon %d\n",
1952 iconinfo->hbmColor, iconinfo->hbmMask,
1953 iconinfo->xHotspot, iconinfo->yHotspot, iconinfo->fIcon);
1954
1955 if (!iconinfo->hbmMask) return 0;
1956
1957 GetObjectW( iconinfo->hbmMask, sizeof(bmpAnd), &bmpAnd );
1958 TRACE("mask: width %d, height %d, width bytes %d, planes %u, bpp %u\n",
1959 bmpAnd.bmWidth, bmpAnd.bmHeight, bmpAnd.bmWidthBytes,
1960 bmpAnd.bmPlanes, bmpAnd.bmBitsPixel);
1961
1962 if (iconinfo->hbmColor)
1963 {
1964 GetObjectW( iconinfo->hbmColor, sizeof(bmpXor), &bmpXor );
1965 TRACE("color: width %d, height %d, width bytes %d, planes %u, bpp %u\n",
1966 bmpXor.bmWidth, bmpXor.bmHeight, bmpXor.bmWidthBytes,
1967 bmpXor.bmPlanes, bmpXor.bmBitsPixel);
1968
1969 width = bmpXor.bmWidth;
1970 height = bmpXor.bmHeight;
1971 if (bmpXor.bmPlanes * bmpXor.bmBitsPixel != 1)
1972 {
1973 color = CreateCompatibleBitmap( screen_dc, width, height );
1974 mask = CreateBitmap( width, height, 1, 1, NULL );
1975 }
1976 else mask = CreateBitmap( width, height * 2, 1, 1, NULL );
1977 }
1978 else
1979 {
1980 width = bmpAnd.bmWidth;
1981 height = bmpAnd.bmHeight;
1982 mask = CreateBitmap( width, height, 1, 1, NULL );
1983 }
1984
1985 hdc = CreateCompatibleDC( 0 );
1986 SelectObject( hdc, mask );
1987 stretch_blt_icon( hdc, 0, 0, width, height, iconinfo->hbmMask, bmpAnd.bmWidth, bmpAnd.bmHeight );
1988
1989 if (color)
1990 {
1991 SelectObject( hdc, color );
1992 stretch_blt_icon( hdc, 0, 0, width, height, iconinfo->hbmColor, width, height );
1993 }
1994 else if (iconinfo->hbmColor)
1995 {
1996 stretch_blt_icon( hdc, 0, height, width, height, iconinfo->hbmColor, width, height );
1997 }
1998 else height /= 2;
1999
2000 DeleteDC( hdc );
2001
2002 hObj = alloc_icon_handle(1);
2003 if (hObj)
2004 {
2005 struct cursoricon_object *info = get_icon_ptr( hObj );
2006
2007 info->is_icon = iconinfo->fIcon;
2008 info->width = width;
2009 info->height = height;
2010 info->frames[0].color = color;
2011 info->frames[0].mask = mask;
2012 info->frames[0].alpha = create_alpha_bitmap( iconinfo->hbmColor, mask, NULL, NULL );
2013 if (info->is_icon)
2014 {
2015 info->hotspot.x = width / 2;
2016 info->hotspot.y = height / 2;
2017 }
2018 else
2019 {
2020 info->hotspot.x = iconinfo->xHotspot;
2021 info->hotspot.y = iconinfo->yHotspot;
2022 }
2023
2024 release_icon_ptr( hObj, info );
2025 USER_Driver->pCreateCursorIcon( hObj );
2026 }
2027 return hObj;
2028 }
2029
2030 /******************************************************************************
2031 * DrawIconEx (USER32.@) Draws an icon or cursor on device context
2032 *
2033 * NOTES
2034 * Why is this using SM_CXICON instead of SM_CXCURSOR?
2035 *
2036 * PARAMS
2037 * hdc [I] Handle to device context
2038 * x0 [I] X coordinate of upper left corner
2039 * y0 [I] Y coordinate of upper left corner
2040 * hIcon [I] Handle to icon to draw
2041 * cxWidth [I] Width of icon
2042 * cyWidth [I] Height of icon
2043 * istep [I] Index of frame in animated cursor
2044 * hbr [I] Handle to background brush
2045 * flags [I] Icon-drawing flags
2046 *
2047 * RETURNS
2048 * Success: TRUE
2049 * Failure: FALSE
2050 */
2051 BOOL WINAPI DrawIconEx( HDC hdc, INT x0, INT y0, HICON hIcon,
2052 INT cxWidth, INT cyWidth, UINT istep,
2053 HBRUSH hbr, UINT flags )
2054 {
2055 struct cursoricon_object *ptr;
2056 HDC hdc_dest, hMemDC;
2057 BOOL result = FALSE, DoOffscreen;
2058 HBITMAP hB_off = 0;
2059 COLORREF oldFg, oldBg;
2060 INT x, y, nStretchMode;
2061
2062 TRACE_(icon)("(hdc=%p,pos=%d.%d,hicon=%p,extend=%d.%d,istep=%d,br=%p,flags=0x%08x)\n",
2063 hdc,x0,y0,hIcon,cxWidth,cyWidth,istep,hbr,flags );
2064
2065 if (!(ptr = get_icon_ptr( hIcon ))) return FALSE;
2066 if (!(hMemDC = CreateCompatibleDC( hdc )))
2067 {
2068 release_icon_ptr( hIcon, ptr );
2069 return FALSE;
2070 }
2071
2072 if (istep >= ptr->num_frames)
2073 {
2074 TRACE_(icon)("Stepped past end of animated frames=%d\n", istep);
2075 release_icon_ptr( hIcon, ptr );
2076 return FALSE;
2077 }
2078 if (flags & DI_NOMIRROR)
2079 FIXME_(icon)("Ignoring flag DI_NOMIRROR\n");
2080
2081 /* Calculate the size of the destination image. */
2082 if (cxWidth == 0)
2083 {
2084 if (flags & DI_DEFAULTSIZE)
2085 cxWidth = GetSystemMetrics (SM_CXICON);
2086 else
2087 cxWidth = ptr->width;
2088 }
2089 if (cyWidth == 0)
2090 {
2091 if (flags & DI_DEFAULTSIZE)
2092 cyWidth = GetSystemMetrics (SM_CYICON);
2093 else
2094 cyWidth = ptr->height;
2095 }
2096
2097 DoOffscreen = (GetObjectType( hbr ) == OBJ_BRUSH);
2098
2099 if (DoOffscreen) {
2100 RECT r;
2101
2102 r.left = 0;
2103 r.top = 0;
2104 r.right = cxWidth;
2105 r.bottom = cxWidth;
2106
2107 if (!(hdc_dest = CreateCompatibleDC(hdc))) goto failed;
2108 if (!(hB_off = CreateCompatibleBitmap(hdc, cxWidth, cyWidth)))
2109 {
2110 DeleteDC( hdc_dest );
2111 goto failed;
2112 }
2113 SelectObject(hdc_dest, hB_off);
2114 FillRect(hdc_dest, &r, hbr);
2115 x = y = 0;
2116 }
2117 else
2118 {
2119 hdc_dest = hdc;
2120 x = x0;
2121 y = y0;
2122 }
2123
2124 nStretchMode = SetStretchBltMode (hdc, STRETCH_DELETESCANS);
2125
2126 oldFg = SetTextColor( hdc, RGB(0,0,0) );
2127 oldBg = SetBkColor( hdc, RGB(255,255,255) );
2128
2129 if (ptr->frames[istep].alpha && (flags & DI_IMAGE))
2130 {
2131 BOOL is_mono = FALSE;
2132
2133 if (GetObjectType( hdc_dest ) == OBJ_MEMDC)
2134 {
2135 BITMAP bm;
2136 HBITMAP bmp = GetCurrentObject( hdc_dest, OBJ_BITMAP );
2137 is_mono = GetObjectW( bmp, sizeof(bm), &bm ) && bm.bmBitsPixel == 1;
2138 }
2139 if (!is_mono)
2140 {
2141 BLENDFUNCTION pixelblend = { AC_SRC_OVER, 0, 255, AC_SRC_ALPHA };
2142 SelectObject( hMemDC, ptr->frames[istep].alpha );
2143 if (GdiAlphaBlend( hdc_dest, x, y, cxWidth, cyWidth, hMemDC,
2144 0, 0, ptr->width, ptr->height, pixelblend )) goto done;
2145 }
2146 }
2147
2148 if (flags & DI_MASK)
2149 {
2150 SelectObject( hMemDC, ptr->frames[istep].mask );
2151 StretchBlt( hdc_dest, x, y, cxWidth, cyWidth,
2152 hMemDC, 0, 0, ptr->width, ptr->height, SRCAND );
2153 }
2154
2155 if (flags & DI_IMAGE)
2156 {
2157 if (ptr->frames[istep].color)
2158 {
2159 DWORD rop = (flags & DI_MASK) ? SRCINVERT : SRCCOPY;
2160 SelectObject( hMemDC, ptr->frames[istep].color );
2161 StretchBlt( hdc_dest, x, y, cxWidth, cyWidth,
2162 hMemDC, 0, 0, ptr->width, ptr->height, rop );
2163 }
2164 else
2165 {
2166 DWORD rop = (flags & DI_MASK) ? SRCINVERT : SRCCOPY;
2167 SelectObject( hMemDC, ptr->frames[istep].mask );
2168 StretchBlt( hdc_dest, x, y, cxWidth, cyWidth,
2169 hMemDC, 0, ptr->height, ptr->width, ptr->height, rop );
2170 }
2171 }
2172
2173 done:
2174 if (DoOffscreen) BitBlt( hdc, x0, y0, cxWidth, cyWidth, hdc_dest, 0, 0, SRCCOPY );
2175
2176 SetTextColor( hdc, oldFg );
2177 SetBkColor( hdc, oldBg );
2178 SetStretchBltMode (hdc, nStretchMode);
2179 result = TRUE;
2180 if (hdc_dest != hdc) DeleteDC( hdc_dest );
2181 if (hB_off) DeleteObject(hB_off);
2182 failed:
2183 DeleteDC( hMemDC );
2184 release_icon_ptr( hIcon, ptr );
2185 return result;
2186 }
2187
2188 /***********************************************************************
2189 * DIB_FixColorsToLoadflags
2190 *
2191 * Change color table entries when LR_LOADTRANSPARENT or LR_LOADMAP3DCOLORS
2192 * are in loadflags
2193 */
2194 static void DIB_FixColorsToLoadflags(BITMAPINFO * bmi, UINT loadflags, BYTE pix)
2195 {
2196 int colors;
2197 COLORREF c_W, c_S, c_F, c_L, c_C;
2198 int incr,i;
2199 RGBQUAD *ptr;
2200 int bitmap_type;
2201 LONG width;
2202 LONG height;
2203 WORD bpp;
2204 DWORD compr;
2205
2206 if (((bitmap_type = DIB_GetBitmapInfo((BITMAPINFOHEADER*) bmi, &width, &height, &bpp, &compr)) == -1))
2207 {
2208 WARN_(resource)("Invalid bitmap\n");
2209 return;
2210 }
2211
2212 if (bpp > 8) return;
2213
2214 if (bitmap_type == 0) /* BITMAPCOREHEADER */
2215 {
2216 incr = 3;
2217 colors = 1 << bpp;
2218 }
2219 else
2220 {
2221 incr = 4;
2222 colors = bmi->bmiHeader.biClrUsed;
2223 if (colors > 256) colors = 256;
2224 if (!colors && (bpp <= 8)) colors = 1 << bpp;
2225 }
2226
2227 c_W = GetSysColor(COLOR_WINDOW);
2228 c_S = GetSysColor(COLOR_3DSHADOW);
2229 c_F = GetSysColor(COLOR_3DFACE);
2230 c_L = GetSysColor(COLOR_3DLIGHT);
2231
2232 if (loadflags & LR_LOADTRANSPARENT) {
2233 switch (bpp) {
2234 case 1: pix = pix >> 7; break;
2235 case 4: pix = pix >> 4; break;
2236 case 8: break;
2237 default:
2238 WARN_(resource)("(%d): Unsupported depth\n", bpp);
2239 return;
2240 }
2241 if (pix >= colors) {
2242 WARN_(resource)("pixel has color index greater than biClrUsed!\n");
2243 return;
2244 }
2245 if (loadflags & LR_LOADMAP3DCOLORS) c_W = c_F;
2246 ptr = (RGBQUAD*)((char*)bmi->bmiColors+pix*incr);
2247 ptr->rgbBlue = GetBValue(c_W);
2248 ptr->rgbGreen = GetGValue(c_W);
2249 ptr->rgbRed = GetRValue(c_W);
2250 }
2251 if (loadflags & LR_LOADMAP3DCOLORS)
2252 for (i=0; i<colors; i++) {
2253 ptr = (RGBQUAD*)((char*)bmi->bmiColors+i*incr);
2254 c_C = RGB(ptr->rgbRed, ptr->rgbGreen, ptr->rgbBlue);
2255 if (c_C == RGB(128, 128, 128)) {
2256 ptr->rgbRed = GetRValue(c_S);
2257 ptr->rgbGreen = GetGValue(c_S);
2258 ptr->rgbBlue = GetBValue(c_S);
2259 } else if (c_C == RGB(192, 192, 192)) {
2260 ptr->rgbRed = GetRValue(c_F);
2261 ptr->rgbGreen = GetGValue(c_F);
2262 ptr->rgbBlue = GetBValue(c_F);
2263 } else if (c_C == RGB(223, 223, 223)) {
2264 ptr->rgbRed = GetRValue(c_L);
2265 ptr->rgbGreen = GetGValue(c_L);
2266 ptr->rgbBlue = GetBValue(c_L);
2267 }
2268 }
2269 }
2270
2271
2272 /**********************************************************************
2273 * BITMAP_Load
2274 */
2275 static HBITMAP BITMAP_Load( HINSTANCE instance, LPCWSTR name,
2276 INT desiredx, INT desiredy, UINT loadflags )
2277 {
2278 HBITMAP hbitmap = 0, orig_bm;
2279 HRSRC hRsrc;
2280 HGLOBAL handle;
2281 char *ptr = NULL;
2282 BITMAPINFO *info, *fix_info = NULL, *scaled_info = NULL;
2283 int size;
2284 BYTE pix;
2285 char *bits;
2286 LONG width, height, new_width, new_height;
2287 WORD bpp_dummy;
2288 DWORD compr_dummy, offbits = 0;
2289 INT bm_type;
2290 HDC screen_mem_dc = NULL;
2291
2292 if (!(loadflags & LR_LOADFROMFILE))
2293 {
2294 if (!instance)
2295 {
2296 /* OEM bitmap: try to load the resource from user32.dll */
2297 instance = user32_module;
2298 }
2299
2300 if (!(hRsrc = FindResourceW( instance, name, (LPWSTR)RT_BITMAP ))) return 0;
2301 if (!(handle = LoadResource( instance, hRsrc ))) return 0;
2302
2303 if ((info = LockResource( handle )) == NULL) return 0;
2304 }
2305 else
2306 {
2307 BITMAPFILEHEADER * bmfh;
2308
2309 if (!(ptr = map_fileW( name, NULL ))) return 0;
2310 info = (BITMAPINFO *)(ptr + sizeof(BITMAPFILEHEADER));
2311 bmfh = (BITMAPFILEHEADER *)ptr;
2312 if (bmfh->bfType != 0x4d42 /* 'BM' */)
2313 {
2314 WARN("Invalid/unsupported bitmap format!\n");
2315 goto end;
2316 }
2317 if (bmfh->bfOffBits) offbits = bmfh->bfOffBits - sizeof(BITMAPFILEHEADER);
2318 }
2319
2320 size = bitmap_info_size(info, DIB_RGB_COLORS);
2321 fix_info = HeapAlloc(GetProcessHeap(), 0, size);
2322 scaled_info = HeapAlloc(GetProcessHeap(), 0, size);
2323
2324 if (!fix_info || !scaled_info) goto end;
2325 memcpy(fix_info, info, size);
2326
2327 pix = *((LPBYTE)info + size);
2328 DIB_FixColorsToLoadflags(fix_info, loadflags, pix);
2329
2330 memcpy(scaled_info, fix_info, size);
2331 bm_type = DIB_GetBitmapInfo( &fix_info->bmiHeader, &width, &height,
2332 &bpp_dummy, &compr_dummy);
2333 if (bm_type == -1)
2334 {
2335 WARN("Invalid bitmap format!\n");
2336 goto end;
2337 }
2338
2339 if(desiredx != 0)
2340 new_width = desiredx;
2341 else
2342 new_width = width;
2343
2344 if(desiredy != 0)
2345 new_height = height > 0 ? desiredy : -desiredy;
2346 else
2347 new_height = height;
2348
2349 if(bm_type == 0)
2350 {
2351 BITMAPCOREHEADER *core = (BITMAPCOREHEADER *)&scaled_info->bmiHeader;
2352 core->bcWidth = new_width;
2353 core->bcHeight = new_height;
2354 }
2355 else
2356 {
2357 /* Some sanity checks for BITMAPINFO (not applicable to BITMAPCOREINFO) */
2358 if (info->bmiHeader.biHeight > 65535 || info->bmiHeader.biWidth > 65535) {
2359 WARN("Broken BitmapInfoHeader!\n");
2360 goto end;
2361 }
2362
2363 scaled_info->bmiHeader.biWidth = new_width;
2364 scaled_info->bmiHeader.biHeight = new_height;
2365 }
2366
2367 if (new_height < 0) new_height = -new_height;
2368
2369 if (!screen_dc) screen_dc = CreateDCW( DISPLAYW, NULL, NULL, NULL );
2370 if (!(screen_mem_dc = CreateCompatibleDC( screen_dc ))) goto end;
2371
2372 bits = (char *)info + (offbits ? offbits : size);
2373
2374 if (loadflags & LR_CREATEDIBSECTION)
2375 {
2376 scaled_info->bmiHeader.biCompression = 0; /* DIBSection can't be compressed */
2377 hbitmap = CreateDIBSection(screen_dc, scaled_info, DIB_RGB_COLORS, NULL, 0, 0);
2378 }
2379 else
2380 {
2381 if (is_dib_monochrome(fix_info))
2382 hbitmap = CreateBitmap(new_width, new_height, 1, 1, NULL);
2383 else
2384 hbitmap = CreateCompatibleBitmap(screen_dc, new_width, new_height);
2385 }
2386
2387 orig_bm = SelectObject(screen_mem_dc, hbitmap);
2388 StretchDIBits(screen_mem_dc, 0, 0, new_width, new_height, 0, 0, width, height, bits, fix_info, DIB_RGB_COLORS, SRCCOPY);
2389 SelectObject(screen_mem_dc, orig_bm);
2390
2391 end:
2392 if (screen_mem_dc) DeleteDC(screen_mem_dc);
2393 HeapFree(GetProcessHeap(), 0, scaled_info);
2394 HeapFree(GetProcessHeap(), 0, fix_info);
2395 if (loadflags & LR_LOADFROMFILE) UnmapViewOfFile( ptr );
2396
2397 return hbitmap;
2398 }
2399
2400 /**********************************************************************
2401 * LoadImageA (USER32.@)
2402 *
2403 * See LoadImageW.
2404 */
2405 HANDLE WINAPI LoadImageA( HINSTANCE hinst, LPCSTR name, UINT type,
2406 INT desiredx, INT desiredy, UINT loadflags)
2407 {
2408 HANDLE res;
2409 LPWSTR u_name;
2410
2411 if (IS_INTRESOURCE(name))
2412 return LoadImageW(hinst, (LPCWSTR)name, type, desiredx, desiredy, loadflags);
2413
2414 __TRY {
2415 DWORD len = MultiByteToWideChar( CP_ACP, 0, name, -1, NULL, 0 );
2416 u_name = HeapAlloc( GetProcessHeap(), 0, len * sizeof(WCHAR) );
2417 MultiByteToWideChar( CP_ACP, 0, name, -1, u_name, len );
2418 }
2419 __EXCEPT_PAGE_FAULT {
2420 SetLastError( ERROR_INVALID_PARAMETER );
2421 return 0;
2422 }
2423 __ENDTRY
2424 res = LoadImageW(hinst, u_name, type, desiredx, desiredy, loadflags);
2425 HeapFree(GetProcessHeap(), 0, u_name);
2426 return res;
2427 }
2428
2429
2430 /******************************************************************************
2431 * LoadImageW (USER32.@) Loads an icon, cursor, or bitmap
2432 *
2433 * PARAMS
2434 * hinst [I] Handle of instance that contains image
2435 * name [I] Name of image
2436 * type [I] Type of image
2437 * desiredx [I] Desired width
2438 * desiredy [I] Desired height
2439 * loadflags [I] Load flags
2440 *
2441 * RETURNS
2442 * Success: Handle to newly loaded image
2443 * Failure: NULL
2444 *
2445 * FIXME: Implementation lacks some features, see LR_ defines in winuser.h
2446 */
2447 HANDLE WINAPI LoadImageW( HINSTANCE hinst, LPCWSTR name, UINT type,
2448 INT desiredx, INT desiredy, UINT loadflags )
2449 {
2450 TRACE_(resource)("(%p,%s,%d,%d,%d,0x%08x)\n",
2451 hinst,debugstr_w(name),type,desiredx,desiredy,loadflags);
2452
2453 if (loadflags & LR_DEFAULTSIZE) {
2454 if (type == IMAGE_ICON) {
2455 if (!desiredx) desiredx = GetSystemMetrics(SM_CXICON);
2456 if (!desiredy) desiredy = GetSystemMetrics(SM_CYICON);
2457 } else if (type == IMAGE_CURSOR) {
2458 if (!desiredx) desiredx = GetSystemMetrics(SM_CXCURSOR);
2459 if (!desiredy) desiredy = GetSystemMetrics(SM_CYCURSOR);
2460 }
2461 }
2462 if (loadflags & LR_LOADFROMFILE) loadflags &= ~LR_SHARED;
2463 switch (type) {
2464 case IMAGE_BITMAP:
2465 return BITMAP_Load( hinst, name, desiredx, desiredy, loadflags );
2466
2467 case IMAGE_ICON:
2468 if (!screen_dc) screen_dc = CreateDCW( DISPLAYW, NULL, NULL, NULL );
2469 if (screen_dc)
2470 {
2471 return CURSORICON_Load(hinst, name, desiredx, desiredy,
2472 GetDeviceCaps(screen_dc, BITSPIXEL),
2473 FALSE, loadflags);
2474 }
2475 break;
2476
2477 case IMAGE_CURSOR:
2478 return CURSORICON_Load(hinst, name, desiredx, desiredy,
2479 1, TRUE, loadflags);
2480 }
2481 return 0;
2482 }
2483
2484 /******************************************************************************
2485 * CopyImage (USER32.@) Creates new image and copies attributes to it
2486 *
2487 * PARAMS
2488 * hnd [I] Handle to image to copy
2489 * type [I] Type of image to copy
2490 * desiredx [I] Desired width of new image
2491 * desiredy [I] Desired height of new image
2492 * flags [I] Copy flags
2493 *
2494 * RETURNS
2495 * Success: Handle to newly created image
2496 * Failure: NULL
2497 *
2498 * BUGS
2499 * Only Windows NT 4.0 supports the LR_COPYRETURNORG flag for bitmaps,
2500 * all other versions (95/2000/XP have been tested) ignore it.
2501 *
2502 * NOTES
2503 * If LR_CREATEDIBSECTION is absent, the copy will be monochrome for
2504 * a monochrome source bitmap or if LR_MONOCHROME is present, otherwise
2505 * the copy will have the same depth as the screen.
2506 * The content of the image will only be copied if the bit depth of the
2507 * original image is compatible with the bit depth of the screen, or
2508 * if the source is a DIB section.
2509 * The LR_MONOCHROME flag is ignored if LR_CREATEDIBSECTION is present.
2510 */
2511 HANDLE WINAPI CopyImage( HANDLE hnd, UINT type, INT desiredx,
2512 INT desiredy, UINT flags )
2513 {
2514 TRACE("hnd=%p, type=%u, desiredx=%d, desiredy=%d, flags=%x\n",
2515 hnd, type, desiredx, desiredy, flags);
2516
2517 switch (type)
2518 {
2519 case IMAGE_BITMAP:
2520 {
2521 HBITMAP res = NULL;
2522 DIBSECTION ds;
2523 int objSize;
2524 BITMAPINFO * bi;
2525
2526 objSize = GetObjectW( hnd, sizeof(ds), &ds );
2527 if (!objSize) return 0;
2528 if ((desiredx < 0) || (desiredy < 0)) return 0;
2529
2530 if (flags & LR_COPYFROMRESOURCE)
2531 {
2532 FIXME("The flag LR_COPYFROMRESOURCE is not implemented for bitmaps\n");
2533 }
2534
2535 if (desiredx == 0) desiredx = ds.dsBm.bmWidth;
2536 if (desiredy == 0) desiredy = ds.dsBm.bmHeight;
2537
2538 /* Allocate memory for a BITMAPINFOHEADER structure and a
2539 color table. The maximum number of colors in a color table
2540 is 256 which corresponds to a bitmap with depth 8.
2541 Bitmaps with higher depths don't have color tables. */
2542 bi = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(BITMAPINFOHEADER) + 256 * sizeof(RGBQUAD));
2543 if (!bi) return 0;
2544
2545 bi->bmiHeader.biSize = sizeof(bi->bmiHeader);
2546 bi->bmiHeader.biPlanes = ds.dsBm.bmPlanes;
2547 bi->bmiHeader.biBitCount = ds.dsBm.bmBitsPixel;
2548 bi->bmiHeader.biCompression = BI_RGB;
2549
2550 if (flags & LR_CREATEDIBSECTION)
2551 {
2552 /* Create a DIB section. LR_MONOCHROME is ignored */
2553 void * bits;
2554 HDC dc = CreateCompatibleDC(NULL);
2555
2556 if (objSize == sizeof(DIBSECTION))
2557 {
2558 /* The source bitmap is a DIB.
2559 Get its attributes to create an exact copy */
2560 memcpy(bi, &ds.dsBmih, sizeof(BITMAPINFOHEADER));
2561 }
2562
2563 /* Get the color table or the color masks */
2564 GetDIBits(dc, hnd, 0, ds.dsBm.bmHeight, NULL, bi, DIB_RGB_COLORS);
2565
2566 bi->bmiHeader.biWidth = desiredx;
2567 bi->bmiHeader.biHeight = desiredy;
2568 bi->bmiHeader.biSizeImage = 0;
2569
2570 res = CreateDIBSection(dc, bi, DIB_RGB_COLORS, &bits, NULL, 0);
2571 DeleteDC(dc);
2572 }
2573 else
2574 {
2575 /* Create a device-dependent bitmap */
2576
2577 BOOL monochrome = (flags & LR_MONOCHROME);
2578
2579 if (objSize == sizeof(DIBSECTION))
2580 {
2581 /* The source bitmap is a DIB section.
2582 Get its attributes */
2583 HDC dc = CreateCompatibleDC(NULL);
2584 bi->bmiHeader.biSize = sizeof(bi->bmiHeader);
2585 bi->bmiHeader.biBitCount = ds.dsBm.bmBitsPixel;
2586 GetDIBits(dc, hnd, 0, ds.dsBm.bmHeight, NULL, bi, DIB_RGB_COLORS);
2587 DeleteDC(dc);
2588
2589 if (!monochrome && ds.dsBm.bmBitsPixel == 1)
2590 {
2591 /* Look if the colors of the DIB are black and white */
2592
2593 monochrome =
2594 (bi->bmiColors[0].rgbRed == 0xff
2595 && bi->bmiColors[0].rgbGreen == 0xff
2596 && bi->bmiColors[0].rgbBlue == 0xff
2597 && bi->bmiColors[0].rgbReserved == 0
2598 && bi->bmiColors[1].rgbRed == 0
2599 && bi->bmiColors[1].rgbGreen == 0
2600 && bi->bmiColors[1].rgbBlue == 0
2601 && bi->bmiColors[1].rgbReserved == 0)
2602 ||
2603 (bi->bmiColors[0].rgbRed == 0
2604 && bi->bmiColors[0].rgbGreen == 0
2605 && bi->bmiColors[0].rgbBlue == 0
2606 && bi->bmiColors[0].rgbReserved == 0
2607 && bi->bmiColors[1].rgbRed == 0xff
2608 && bi->bmiColors[1].rgbGreen == 0xff
2609 && bi->bmiColors[1].rgbBlue == 0xff
2610 && bi->bmiColors[1].rgbReserved == 0);
2611 }
2612 }
2613 else if (!monochrome)
2614 {
2615 monochrome = ds.dsBm.bmBitsPixel == 1;
2616 }
2617
2618 if (monochrome)
2619 {
2620 res = CreateBitmap(desiredx, desiredy, 1, 1, NULL);
2621 }
2622 else
2623 {
2624 HDC screenDC = GetDC(NULL);
2625 res = CreateCompatibleBitmap(screenDC, desiredx, desiredy);
2626 ReleaseDC(NULL, screenDC);
2627 }
2628 }
2629
2630 if (res)
2631 {
2632 /* Only copy the bitmap if it's a DIB section or if it's
2633 compatible to the screen */
2634 BOOL copyContents;
2635
2636 if (objSize == sizeof(DIBSECTION))
2637 {
2638 copyContents = TRUE;
2639 }
2640 else
2641 {
2642 HDC screenDC = GetDC(NULL);
2643 int screen_depth = GetDeviceCaps(screenDC, BITSPIXEL);
2644 ReleaseDC(NULL, screenDC);
2645
2646 copyContents = (ds.dsBm.bmBitsPixel == 1 || ds.dsBm.bmBitsPixel == screen_depth);
2647 }
2648
2649 if (copyContents)
2650 {
2651 /* The source bitmap may already be selected in a device context,
2652 use GetDIBits/StretchDIBits and not StretchBlt */
2653
2654 HDC dc;
2655 void * bits;
2656
2657 dc = CreateCompatibleDC(NULL);
2658
2659 bi->bmiHeader.biWidth = ds.dsBm.bmWidth;
2660 bi->bmiHeader.biHeight = ds.dsBm.bmHeight;
2661 bi->bmiHeader.biSizeImage = 0;
2662 bi->bmiHeader.biClrUsed = 0;
2663 bi->bmiHeader.biClrImportant = 0;
2664
2665 /* Fill in biSizeImage */
2666 GetDIBits(dc, hnd, 0, ds.dsBm.bmHeight, NULL, bi, DIB_RGB_COLORS);
2667 bits = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, bi->bmiHeader.biSizeImage);
2668
2669 if (bits)
2670 {
2671 HBITMAP oldBmp;
2672
2673 /* Get the image bits of the source bitmap */
2674 GetDIBits(dc, hnd, 0, ds.dsBm.bmHeight, bits, bi, DIB_RGB_COLORS);
2675
2676 /* Copy it to the destination bitmap */
2677 oldBmp = SelectObject(dc, res);
2678 StretchDIBits(dc, 0, 0, desiredx, desiredy,
2679 0, 0, ds.dsBm.bmWidth, ds.dsBm.bmHeight,
2680 bits, bi, DIB_RGB_COLORS, SRCCOPY);
2681 SelectObject(dc, oldBmp);
2682
2683 HeapFree(GetProcessHeap(), 0, bits);
2684 }
2685
2686 DeleteDC(dc);
2687 }
2688
2689 if (flags & LR_COPYDELETEORG)
2690 {
2691 DeleteObject(hnd);
2692 }
2693 }
2694 HeapFree(GetProcessHeap(), 0, bi);
2695 return res;
2696 }
2697 case IMAGE_ICON:
2698 return CURSORICON_ExtCopy(hnd,type, desiredx, desiredy, flags);
2699 case IMAGE_CURSOR:
2700 /* Should call CURSORICON_ExtCopy but more testing
2701 * needs to be done before we change this
2702 */
2703 if (flags) FIXME("Flags are ignored\n");
2704 return CopyCursor(hnd);
2705 }
2706 return 0;
2707 }
2708
2709
2710 /******************************************************************************
2711 * LoadBitmapW (USER32.@) Loads bitmap from the executable file
2712 *
2713 * RETURNS
2714 * Success: Handle to specified bitmap
2715 * Failure: NULL
2716 */
2717 HBITMAP WINAPI LoadBitmapW(
2718 HINSTANCE instance, /* [in] Handle to application instance */
2719 LPCWSTR name) /* [in] Address of bitmap resource name */
2720 {
2721 return LoadImageW( instance, name, IMAGE_BITMAP, 0, 0, 0 );
2722 }
2723
2724 /**********************************************************************
2725 * LoadBitmapA (USER32.@)
2726 *
2727 * See LoadBitmapW.
2728 */
2729 HBITMAP WINAPI LoadBitmapA( HINSTANCE instance, LPCSTR name )
2730 {
2731 return LoadImageA( instance, name, IMAGE_BITMAP, 0, 0, 0 );
2732 }
Windows API implementation