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push ca931951dc5f3f050707cce013d2412130f45f11
[wine/hacks.git] / dlls / user32 / cursoricon.c
blob48a1a59ff7ef06a3f14d4cc93fed33a1e7401d34
1 /*
2 * Cursor and icon support
3 *
4 * Copyright 1995 Alexandre Julliard
5 * 1996 Martin Von Loewis
6 * 1997 Alex Korobka
7 * 1998 Turchanov Sergey
8 * 2007 Henri Verbeet
9 *
10 * This library is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU Lesser General Public
12 * License as published by the Free Software Foundation; either
13 * version 2.1 of the License, or (at your option) any later version.
14 *
15 * This library is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 * Lesser General Public License for more details.
19 *
20 * You should have received a copy of the GNU Lesser General Public
21 * License along with this library; if not, write to the Free Software
22 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
23 */
24
25 /*
26 * Theory:
27 *
28 * Cursors and icons are stored in a global heap block, with the
29 * following layout:
30 *
31 * CURSORICONINFO info;
32 * BYTE[] ANDbits;
33 * BYTE[] XORbits;
34 *
35 * The bits structures are in the format of a device-dependent bitmap.
36 *
37 * This layout is very sub-optimal, as the bitmap bits are stored in
38 * the X client instead of in the server like other bitmaps; however,
39 * some programs (notably Paint Brush) expect to be able to manipulate
40 * the bits directly :-(
41 */
42
43 #include "config.h"
44 #include "wine/port.h"
45
46 #include <stdarg.h>
47 #include <string.h>
48 #include <stdlib.h>
49
50 #include "windef.h"
51 #include "winbase.h"
52 #include "wingdi.h"
53 #include "winerror.h"
54 #include "wine/winbase16.h"
55 #include "wine/winuser16.h"
56 #include "wine/exception.h"
57 #include "wine/debug.h"
58 #include "user_private.h"
59
60 WINE_DEFAULT_DEBUG_CHANNEL(cursor);
61 WINE_DECLARE_DEBUG_CHANNEL(icon);
62 WINE_DECLARE_DEBUG_CHANNEL(resource);
63
64 #include "pshpack1.h"
65
66 typedef struct {
67 BYTE bWidth;
68 BYTE bHeight;
69 BYTE bColorCount;
70 BYTE bReserved;
71 WORD xHotspot;
72 WORD yHotspot;
73 DWORD dwDIBSize;
74 DWORD dwDIBOffset;
75 } CURSORICONFILEDIRENTRY;
76
77 typedef struct
78 {
79 WORD idReserved;
80 WORD idType;
81 WORD idCount;
82 CURSORICONFILEDIRENTRY idEntries[1];
83 } CURSORICONFILEDIR;
84
85 #include "poppack.h"
86
87 #define CID_RESOURCE 0x0001
88 #define CID_WIN32 0x0004
89 #define CID_NONSHARED 0x0008
90
91 static RECT CURSOR_ClipRect; /* Cursor clipping rect */
92
93 static HDC screen_dc;
94
95 static const WCHAR DISPLAYW[] = {'D','I','S','P','L','A','Y',0};
96
97 /**********************************************************************
98 * ICONCACHE for cursors/icons loaded with LR_SHARED.
99 *
100 * FIXME: This should not be allocated on the system heap, but on a
101 * subsystem-global heap (i.e. one for all Win16 processes,
102 * and one for each Win32 process).
103 */
104 typedef struct tagICONCACHE
105 {
106 struct tagICONCACHE *next;
107
108 HMODULE hModule;
109 HRSRC hRsrc;
110 HRSRC hGroupRsrc;
111 HICON hIcon;
112
113 INT count;
114
115 } ICONCACHE;
116
117 static ICONCACHE *IconAnchor = NULL;
118
119 static CRITICAL_SECTION IconCrst;
120 static CRITICAL_SECTION_DEBUG critsect_debug =
121 {
122 0, 0, &IconCrst,
123 { &critsect_debug.ProcessLocksList, &critsect_debug.ProcessLocksList },
124 0, 0, { (DWORD_PTR)(__FILE__ ": IconCrst") }
125 };
126 static CRITICAL_SECTION IconCrst = { &critsect_debug, -1, 0, 0, 0, 0 };
127
128 static const WORD ICON_HOTSPOT = 0x4242;
129
130
131 /***********************************************************************
132 * map_fileW
133 *
134 * Helper function to map a file to memory:
135 * name - file name
136 * [RETURN] ptr - pointer to mapped file
137 * [RETURN] filesize - pointer size of file to be stored if not NULL
138 */
139 static void *map_fileW( LPCWSTR name, LPDWORD filesize )
140 {
141 HANDLE hFile, hMapping;
142 LPVOID ptr = NULL;
143
144 hFile = CreateFileW( name, GENERIC_READ, FILE_SHARE_READ, NULL,
145 OPEN_EXISTING, FILE_FLAG_RANDOM_ACCESS, 0 );
146 if (hFile != INVALID_HANDLE_VALUE)
147 {
148 hMapping = CreateFileMappingW( hFile, NULL, PAGE_READONLY, 0, 0, NULL );
149 if (hMapping)
150 {
151 ptr = MapViewOfFile( hMapping, FILE_MAP_READ, 0, 0, 0 );
152 CloseHandle( hMapping );
153 if (filesize)
154 *filesize = GetFileSize( hFile, NULL );
155 }
156 CloseHandle( hFile );
157 }
158 return ptr;
159 }
160
161
162 /***********************************************************************
163 * get_bitmap_width_bytes
164 *
165 * Return number of bytes taken by a scanline of 16-bit aligned Windows DDB
166 * data.
167 */
168 static int get_bitmap_width_bytes( int width, int bpp )
169 {
170 switch(bpp)
171 {
172 case 1:
173 return 2 * ((width+15) / 16);
174 case 4:
175 return 2 * ((width+3) / 4);
176 case 24:
177 width *= 3;
178 /* fall through */
179 case 8:
180 return width + (width & 1);
181 case 16:
182 case 15:
183 return width * 2;
184 case 32:
185 return width * 4;
186 default:
187 WARN("Unknown depth %d, please report.\n", bpp );
188 }
189 return -1;
190 }
191
192
193 /***********************************************************************
194 * get_dib_width_bytes
195 *
196 * Return the width of a DIB bitmap in bytes. DIB bitmap data is 32-bit aligned.
197 */
198 static int get_dib_width_bytes( int width, int depth )
199 {
200 int words;
201
202 switch(depth)
203 {
204 case 1: words = (width + 31) / 32; break;
205 case 4: words = (width + 7) / 8; break;
206 case 8: words = (width + 3) / 4; break;
207 case 15:
208 case 16: words = (width + 1) / 2; break;
209 case 24: words = (width * 3 + 3)/4; break;
210 default:
211 WARN("(%d): Unsupported depth\n", depth );
212 /* fall through */
213 case 32:
214 words = width;
215 }
216 return 4 * words;
217 }
218
219
220 /***********************************************************************
221 * bitmap_info_size
222 *
223 * Return the size of the bitmap info structure including color table.
224 */
225 static int bitmap_info_size( const BITMAPINFO * info, WORD coloruse )
226 {
227 int colors, masks = 0;
228
229 if (info->bmiHeader.biSize == sizeof(BITMAPCOREHEADER))
230 {
231 const BITMAPCOREHEADER *core = (const BITMAPCOREHEADER *)info;
232 colors = (core->bcBitCount <= 8) ? 1 << core->bcBitCount : 0;
233 return sizeof(BITMAPCOREHEADER) + colors *
234 ((coloruse == DIB_RGB_COLORS) ? sizeof(RGBTRIPLE) : sizeof(WORD));
235 }
236 else /* assume BITMAPINFOHEADER */
237 {
238 colors = info->bmiHeader.biClrUsed;
239 if (colors > 256) /* buffer overflow otherwise */
240 colors = 256;
241 if (!colors && (info->bmiHeader.biBitCount <= 8))
242 colors = 1 << info->bmiHeader.biBitCount;
243 if (info->bmiHeader.biCompression == BI_BITFIELDS) masks = 3;
244 return sizeof(BITMAPINFOHEADER) + masks * sizeof(DWORD) + colors *
245 ((coloruse == DIB_RGB_COLORS) ? sizeof(RGBQUAD) : sizeof(WORD));
246 }
247 }
248
249
250 /***********************************************************************
251 * is_dib_monochrome
252 *
253 * Returns whether a DIB can be converted to a monochrome DDB.
254 *
255 * A DIB can be converted if its color table contains only black and
256 * white. Black must be the first color in the color table.
257 *
258 * Note : If the first color in the color table is white followed by
259 * black, we can't convert it to a monochrome DDB with
260 * SetDIBits, because black and white would be inverted.
261 */
262 static BOOL is_dib_monochrome( const BITMAPINFO* info )
263 {
264 if (info->bmiHeader.biBitCount != 1) return FALSE;
265
266 if (info->bmiHeader.biSize == sizeof(BITMAPCOREHEADER))
267 {
268 const RGBTRIPLE *rgb = ((const BITMAPCOREINFO*)info)->bmciColors;
269
270 /* Check if the first color is black */
271 if ((rgb->rgbtRed == 0) && (rgb->rgbtGreen == 0) && (rgb->rgbtBlue == 0))
272 {
273 rgb++;
274
275 /* Check if the second color is white */
276 return ((rgb->rgbtRed == 0xff) && (rgb->rgbtGreen == 0xff)
277 && (rgb->rgbtBlue == 0xff));
278 }
279 else return FALSE;
280 }
281 else /* assume BITMAPINFOHEADER */
282 {
283 const RGBQUAD *rgb = info->bmiColors;
284
285 /* Check if the first color is black */
286 if ((rgb->rgbRed == 0) && (rgb->rgbGreen == 0) &&
287 (rgb->rgbBlue == 0) && (rgb->rgbReserved == 0))
288 {
289 rgb++;
290
291 /* Check if the second color is white */
292 return ((rgb->rgbRed == 0xff) && (rgb->rgbGreen == 0xff)
293 && (rgb->rgbBlue == 0xff) && (rgb->rgbReserved == 0));
294 }
295 else return FALSE;
296 }
297 }
298
299 /***********************************************************************
300 * DIB_GetBitmapInfo
301 *
302 * Get the info from a bitmap header.
303 * Return 1 for INFOHEADER, 0 for COREHEADER,
304 * 4 for V4HEADER, 5 for V5HEADER, -1 for error.
305 */
306 static int DIB_GetBitmapInfo( const BITMAPINFOHEADER *header, LONG *width,
307 LONG *height, WORD *bpp, DWORD *compr )
308 {
309 if (header->biSize == sizeof(BITMAPINFOHEADER))
310 {
311 *width = header->biWidth;
312 *height = header->biHeight;
313 *bpp = header->biBitCount;
314 *compr = header->biCompression;
315 return 1;
316 }
317 if (header->biSize == sizeof(BITMAPCOREHEADER))
318 {
319 const BITMAPCOREHEADER *core = (const BITMAPCOREHEADER *)header;
320 *width = core->bcWidth;
321 *height = core->bcHeight;
322 *bpp = core->bcBitCount;
323 *compr = 0;
324 return 0;
325 }
326 if (header->biSize == sizeof(BITMAPV4HEADER))
327 {
328 const BITMAPV4HEADER *v4hdr = (const BITMAPV4HEADER *)header;
329 *width = v4hdr->bV4Width;
330 *height = v4hdr->bV4Height;
331 *bpp = v4hdr->bV4BitCount;
332 *compr = v4hdr->bV4V4Compression;
333 return 4;
334 }
335 if (header->biSize == sizeof(BITMAPV5HEADER))
336 {
337 const BITMAPV5HEADER *v5hdr = (const BITMAPV5HEADER *)header;
338 *width = v5hdr->bV5Width;
339 *height = v5hdr->bV5Height;
340 *bpp = v5hdr->bV5BitCount;
341 *compr = v5hdr->bV5Compression;
342 return 5;
343 }
344 ERR("(%d): unknown/wrong size for header\n", header->biSize );
345 return -1;
346 }
347
348 /**********************************************************************
349 * CURSORICON_FindSharedIcon
350 */
351 static HICON CURSORICON_FindSharedIcon( HMODULE hModule, HRSRC hRsrc )
352 {
353 HICON hIcon = 0;
354 ICONCACHE *ptr;
355
356 EnterCriticalSection( &IconCrst );
357
358 for ( ptr = IconAnchor; ptr; ptr = ptr->next )
359 if ( ptr->hModule == hModule && ptr->hRsrc == hRsrc )
360 {
361 ptr->count++;
362 hIcon = ptr->hIcon;
363 break;
364 }
365
366 LeaveCriticalSection( &IconCrst );
367
368 return hIcon;
369 }
370
371 /*************************************************************************
372 * CURSORICON_FindCache
373 *
374 * Given a handle, find the corresponding cache element
375 *
376 * PARAMS
377 * Handle [I] handle to an Image
378 *
379 * RETURNS
380 * Success: The cache entry
381 * Failure: NULL
382 *
383 */
384 static ICONCACHE* CURSORICON_FindCache(HICON hIcon)
385 {
386 ICONCACHE *ptr;
387 ICONCACHE *pRet=NULL;
388 BOOL IsFound = FALSE;
389
390 EnterCriticalSection( &IconCrst );
391
392 for (ptr = IconAnchor; ptr != NULL && !IsFound; ptr = ptr->next)
393 {
394 if ( hIcon == ptr->hIcon )
395 {
396 IsFound = TRUE;
397 pRet = ptr;
398 }
399 }
400
401 LeaveCriticalSection( &IconCrst );
402
403 return pRet;
404 }
405
406 /**********************************************************************
407 * CURSORICON_AddSharedIcon
408 */
409 static void CURSORICON_AddSharedIcon( HMODULE hModule, HRSRC hRsrc, HRSRC hGroupRsrc, HICON hIcon )
410 {
411 ICONCACHE *ptr = HeapAlloc( GetProcessHeap(), 0, sizeof(ICONCACHE) );
412 if ( !ptr ) return;
413
414 ptr->hModule = hModule;
415 ptr->hRsrc = hRsrc;
416 ptr->hIcon = hIcon;
417 ptr->hGroupRsrc = hGroupRsrc;
418 ptr->count = 1;
419
420 EnterCriticalSection( &IconCrst );
421 ptr->next = IconAnchor;
422 IconAnchor = ptr;
423 LeaveCriticalSection( &IconCrst );
424 }
425
426 /**********************************************************************
427 * CURSORICON_DelSharedIcon
428 */
429 static INT CURSORICON_DelSharedIcon( HICON hIcon )
430 {
431 INT count = -1;
432 ICONCACHE *ptr;
433
434 EnterCriticalSection( &IconCrst );
435
436 for ( ptr = IconAnchor; ptr; ptr = ptr->next )
437 if ( ptr->hIcon == hIcon )
438 {
439 if ( ptr->count > 0 ) ptr->count--;
440 count = ptr->count;
441 break;
442 }
443
444 LeaveCriticalSection( &IconCrst );
445
446 return count;
447 }
448
449 /**********************************************************************
450 * CURSORICON_FreeModuleIcons
451 */
452 void CURSORICON_FreeModuleIcons( HMODULE16 hMod16 )
453 {
454 ICONCACHE **ptr = &IconAnchor;
455 HMODULE hModule = HMODULE_32(GetExePtr( hMod16 ));
456
457 EnterCriticalSection( &IconCrst );
458
459 while ( *ptr )
460 {
461 if ( (*ptr)->hModule == hModule )
462 {
463 ICONCACHE *freePtr = *ptr;
464 *ptr = freePtr->next;
465
466 GlobalFree16(HICON_16(freePtr->hIcon));
467 HeapFree( GetProcessHeap(), 0, freePtr );
468 continue;
469 }
470 ptr = &(*ptr)->next;
471 }
472
473 LeaveCriticalSection( &IconCrst );
474 }
475
476 /*
477 * The following macro functions account for the irregularities of
478 * accessing cursor and icon resources in files and resource entries.
479 */
480 typedef BOOL (*fnGetCIEntry)( LPVOID dir, int n,
481 int *width, int *height, int *bits );
482
483 /**********************************************************************
484 * CURSORICON_FindBestIcon
485 *
486 * Find the icon closest to the requested size and number of colors.
487 */
488 static int CURSORICON_FindBestIcon( LPVOID dir, fnGetCIEntry get_entry,
489 int width, int height, int colors )
490 {
491 int i, cx, cy, bits, bestEntry = -1;
492 UINT iTotalDiff, iXDiff=0, iYDiff=0, iColorDiff;
493 UINT iTempXDiff, iTempYDiff, iTempColorDiff;
494
495 /* Find Best Fit */
496 iTotalDiff = 0xFFFFFFFF;
497 iColorDiff = 0xFFFFFFFF;
498 for ( i = 0; get_entry( dir, i, &cx, &cy, &bits ); i++ )
499 {
500 iTempXDiff = abs(width - cx);
501 iTempYDiff = abs(height - cy);
502
503 if(iTotalDiff > (iTempXDiff + iTempYDiff))
504 {
505 iXDiff = iTempXDiff;
506 iYDiff = iTempYDiff;
507 iTotalDiff = iXDiff + iYDiff;
508 }
509 }
510
511 /* Find Best Colors for Best Fit */
512 for ( i = 0; get_entry( dir, i, &cx, &cy, &bits ); i++ )
513 {
514 if(abs(width - cx) == iXDiff && abs(height - cy) == iYDiff)
515 {
516 iTempColorDiff = abs(colors - (1<<bits));
517 if(iColorDiff > iTempColorDiff)
518 {
519 bestEntry = i;
520 iColorDiff = iTempColorDiff;
521 }
522 }
523 }
524
525 return bestEntry;
526 }
527
528 static BOOL CURSORICON_GetResIconEntry( LPVOID dir, int n,
529 int *width, int *height, int *bits )
530 {
531 CURSORICONDIR *resdir = dir;
532 ICONRESDIR *icon;
533
534 if ( resdir->idCount <= n )
535 return FALSE;
536 icon = &resdir->idEntries[n].ResInfo.icon;
537 *width = icon->bWidth;
538 *height = icon->bHeight;
539 *bits = resdir->idEntries[n].wBitCount;
540 return TRUE;
541 }
542
543 /**********************************************************************
544 * CURSORICON_FindBestCursor
545 *
546 * Find the cursor closest to the requested size.
547 *
548 * FIXME: parameter 'color' ignored.
549 */
550 static int CURSORICON_FindBestCursor( LPVOID dir, fnGetCIEntry get_entry,
551 int width, int height, int color )
552 {
553 int i, maxwidth, maxheight, cx, cy, bits, bestEntry = -1;
554
555 /* Double height to account for AND and XOR masks */
556
557 height *= 2;
558
559 /* First find the largest one smaller than or equal to the requested size*/
560
561 maxwidth = maxheight = 0;
562 for ( i = 0; get_entry( dir, i, &cx, &cy, &bits ); i++ )
563 {
564 if ((cx <= width) && (cy <= height) &&
565 (cx > maxwidth) && (cy > maxheight))
566 {
567 bestEntry = i;
568 maxwidth = cx;
569 maxheight = cy;
570 }
571 }
572 if (bestEntry != -1) return bestEntry;
573
574 /* Now find the smallest one larger than the requested size */
575
576 maxwidth = maxheight = 255;
577 for ( i = 0; get_entry( dir, i, &cx, &cy, &bits ); i++ )
578 {
579 if (((cx < maxwidth) && (cy < maxheight)) || (bestEntry == -1))
580 {
581 bestEntry = i;
582 maxwidth = cx;
583 maxheight = cy;
584 }
585 }
586
587 return bestEntry;
588 }
589
590 static BOOL CURSORICON_GetResCursorEntry( LPVOID dir, int n,
591 int *width, int *height, int *bits )
592 {
593 CURSORICONDIR *resdir = dir;
594 CURSORDIR *cursor;
595
596 if ( resdir->idCount <= n )
597 return FALSE;
598 cursor = &resdir->idEntries[n].ResInfo.cursor;
599 *width = cursor->wWidth;
600 *height = cursor->wHeight;
601 *bits = resdir->idEntries[n].wBitCount;
602 return TRUE;
603 }
604
605 static CURSORICONDIRENTRY *CURSORICON_FindBestIconRes( CURSORICONDIR * dir,
606 int width, int height, int colors )
607 {
608 int n;
609
610 n = CURSORICON_FindBestIcon( dir, CURSORICON_GetResIconEntry,
611 width, height, colors );
612 if ( n < 0 )
613 return NULL;
614 return &dir->idEntries[n];
615 }
616
617 static CURSORICONDIRENTRY *CURSORICON_FindBestCursorRes( CURSORICONDIR *dir,
618 int width, int height, int color )
619 {
620 int n = CURSORICON_FindBestCursor( dir, CURSORICON_GetResCursorEntry,
621 width, height, color );
622 if ( n < 0 )
623 return NULL;
624 return &dir->idEntries[n];
625 }
626
627 static BOOL CURSORICON_GetFileEntry( LPVOID dir, int n,
628 int *width, int *height, int *bits )
629 {
630 CURSORICONFILEDIR *filedir = dir;
631 CURSORICONFILEDIRENTRY *entry;
632
633 if ( filedir->idCount <= n )
634 return FALSE;
635 entry = &filedir->idEntries[n];
636 *width = entry->bWidth;
637 *height = entry->bHeight;
638 *bits = entry->bColorCount;
639 return TRUE;
640 }
641
642 static CURSORICONFILEDIRENTRY *CURSORICON_FindBestCursorFile( CURSORICONFILEDIR *dir,
643 int width, int height, int color )
644 {
645 int n = CURSORICON_FindBestCursor( dir, CURSORICON_GetFileEntry,
646 width, height, color );
647 if ( n < 0 )
648 return NULL;
649 return &dir->idEntries[n];
650 }
651
652 static CURSORICONFILEDIRENTRY *CURSORICON_FindBestIconFile( CURSORICONFILEDIR *dir,
653 int width, int height, int color )
654 {
655 int n = CURSORICON_FindBestIcon( dir, CURSORICON_GetFileEntry,
656 width, height, color );
657 if ( n < 0 )
658 return NULL;
659 return &dir->idEntries[n];
660 }
661
662 static HICON CURSORICON_CreateIconFromBMI( BITMAPINFO *bmi,
663 POINT16 hotspot, BOOL bIcon,
664 DWORD dwVersion,
665 INT width, INT height,
666 UINT cFlag )
667 {
668 HGLOBAL16 hObj;
669 static HDC hdcMem;
670 int sizeAnd, sizeXor;
671 HBITMAP hAndBits = 0, hXorBits = 0; /* error condition for later */
672 BITMAP bmpXor, bmpAnd;
673 BOOL DoStretch;
674 INT size;
675
676 if (dwVersion == 0x00020000)
677 {
678 FIXME_(cursor)("\t2.xx resources are not supported\n");
679 return 0;
680 }
681
682 /* Check bitmap header */
683
684 if ( (bmi->bmiHeader.biSize != sizeof(BITMAPCOREHEADER)) &&
685 (bmi->bmiHeader.biSize != sizeof(BITMAPINFOHEADER) ||
686 bmi->bmiHeader.biCompression != BI_RGB) )
687 {
688 WARN_(cursor)("\tinvalid resource bitmap header.\n");
689 return 0;
690 }
691
692 size = bitmap_info_size( bmi, DIB_RGB_COLORS );
693
694 if (!width) width = bmi->bmiHeader.biWidth;
695 if (!height) height = bmi->bmiHeader.biHeight/2;
696 DoStretch = (bmi->bmiHeader.biHeight/2 != height) ||
697 (bmi->bmiHeader.biWidth != width);
698
699 /* Scale the hotspot */
700 if (DoStretch && hotspot.x != ICON_HOTSPOT && hotspot.y != ICON_HOTSPOT)
701 {
702 hotspot.x = (hotspot.x * width) / bmi->bmiHeader.biWidth;
703 hotspot.y = (hotspot.y * height) / (bmi->bmiHeader.biHeight / 2);
704 }
705
706 if (!screen_dc) screen_dc = CreateDCW( DISPLAYW, NULL, NULL, NULL );
707 if (screen_dc)
708 {
709 BITMAPINFO* pInfo;
710
711 /* Make sure we have room for the monochrome bitmap later on.
712 * Note that BITMAPINFOINFO and BITMAPCOREHEADER are the same
713 * up to and including the biBitCount. In-memory icon resource
714 * format is as follows:
715 *
716 * BITMAPINFOHEADER icHeader // DIB header
717 * RGBQUAD icColors[] // Color table
718 * BYTE icXOR[] // DIB bits for XOR mask
719 * BYTE icAND[] // DIB bits for AND mask
720 */
721
722 if ((pInfo = HeapAlloc( GetProcessHeap(), 0,
723 max(size, sizeof(BITMAPINFOHEADER) + 2*sizeof(RGBQUAD)))))
724 {
725 memcpy( pInfo, bmi, size );
726 pInfo->bmiHeader.biHeight /= 2;
727
728 /* Create the XOR bitmap */
729
730 if (DoStretch) {
731 hXorBits = CreateCompatibleBitmap(screen_dc, width, height);
732 if(hXorBits)
733 {
734 HBITMAP hOld;
735 BOOL res = FALSE;
736
737 if (!hdcMem) hdcMem = CreateCompatibleDC(screen_dc);
738 if (hdcMem) {
739 hOld = SelectObject(hdcMem, hXorBits);
740 res = StretchDIBits(hdcMem, 0, 0, width, height, 0, 0,
741 bmi->bmiHeader.biWidth, bmi->bmiHeader.biHeight/2,
742 (char*)bmi + size, pInfo, DIB_RGB_COLORS, SRCCOPY);
743 SelectObject(hdcMem, hOld);
744 }
745 if (!res) { DeleteObject(hXorBits); hXorBits = 0; }
746 }
747 } else {
748 if (is_dib_monochrome(bmi)) {
749 hXorBits = CreateBitmap(width, height, 1, 1, NULL);
750 SetDIBits(screen_dc, hXorBits, 0, height,
751 (char*)bmi + size, pInfo, DIB_RGB_COLORS);
752 }
753 else
754 hXorBits = CreateDIBitmap(screen_dc, &pInfo->bmiHeader,
755 CBM_INIT, (char*)bmi + size, pInfo, DIB_RGB_COLORS);
756 }
757
758 if( hXorBits )
759 {
760 char* xbits = (char *)bmi + size +
761 get_dib_width_bytes( bmi->bmiHeader.biWidth,
762 bmi->bmiHeader.biBitCount ) * abs( bmi->bmiHeader.biHeight ) / 2;
763
764 pInfo->bmiHeader.biBitCount = 1;
765 if (pInfo->bmiHeader.biSize != sizeof(BITMAPCOREHEADER))
766 {
767 RGBQUAD *rgb = pInfo->bmiColors;
768
769 pInfo->bmiHeader.biClrUsed = pInfo->bmiHeader.biClrImportant = 2;
770 rgb[0].rgbBlue = rgb[0].rgbGreen = rgb[0].rgbRed = 0x00;
771 rgb[1].rgbBlue = rgb[1].rgbGreen = rgb[1].rgbRed = 0xff;
772 rgb[0].rgbReserved = rgb[1].rgbReserved = 0;
773 }
774 else
775 {
776 RGBTRIPLE *rgb = (RGBTRIPLE *)(((BITMAPCOREHEADER *)pInfo) + 1);
777
778 rgb[0].rgbtBlue = rgb[0].rgbtGreen = rgb[0].rgbtRed = 0x00;
779 rgb[1].rgbtBlue = rgb[1].rgbtGreen = rgb[1].rgbtRed = 0xff;
780 }
781
782 /* Create the AND bitmap */
783
784 if (DoStretch) {
785 if ((hAndBits = CreateBitmap(width, height, 1, 1, NULL))) {
786 HBITMAP hOld;
787 BOOL res = FALSE;
788
789 if (!hdcMem) hdcMem = CreateCompatibleDC(screen_dc);
790 if (hdcMem) {
791 hOld = SelectObject(hdcMem, hAndBits);
792 res = StretchDIBits(hdcMem, 0, 0, width, height, 0, 0,
793 pInfo->bmiHeader.biWidth, pInfo->bmiHeader.biHeight,
794 xbits, pInfo, DIB_RGB_COLORS, SRCCOPY);
795 SelectObject(hdcMem, hOld);
796 }
797 if (!res) { DeleteObject(hAndBits); hAndBits = 0; }
798 }
799 } else {
800 hAndBits = CreateBitmap(width, height, 1, 1, NULL);
801
802 if (hAndBits) SetDIBits(screen_dc, hAndBits, 0, height,
803 xbits, pInfo, DIB_RGB_COLORS);
804
805 }
806 if( !hAndBits ) DeleteObject( hXorBits );
807 }
808 HeapFree( GetProcessHeap(), 0, pInfo );
809 }
810 }
811
812 if( !hXorBits || !hAndBits )
813 {
814 WARN_(cursor)("\tunable to create an icon bitmap.\n");
815 return 0;
816 }
817
818 /* Now create the CURSORICONINFO structure */
819 GetObjectA( hXorBits, sizeof(bmpXor), &bmpXor );
820 GetObjectA( hAndBits, sizeof(bmpAnd), &bmpAnd );
821 sizeXor = bmpXor.bmHeight * bmpXor.bmWidthBytes;
822 sizeAnd = bmpAnd.bmHeight * bmpAnd.bmWidthBytes;
823
824 hObj = GlobalAlloc16( GMEM_MOVEABLE,
825 sizeof(CURSORICONINFO) + sizeXor + sizeAnd );
826 if (hObj)
827 {
828 CURSORICONINFO *info;
829
830 info = GlobalLock16( hObj );
831 info->ptHotSpot.x = hotspot.x;
832 info->ptHotSpot.y = hotspot.y;
833 info->nWidth = bmpXor.bmWidth;
834 info->nHeight = bmpXor.bmHeight;
835 info->nWidthBytes = bmpXor.bmWidthBytes;
836 info->bPlanes = bmpXor.bmPlanes;
837 info->bBitsPerPixel = bmpXor.bmBitsPixel;
838
839 /* Transfer the bitmap bits to the CURSORICONINFO structure */
840
841 GetBitmapBits( hAndBits, sizeAnd, info + 1 );
842 GetBitmapBits( hXorBits, sizeXor, (char *)(info + 1) + sizeAnd );
843 GlobalUnlock16( hObj );
844 }
845
846 DeleteObject( hAndBits );
847 DeleteObject( hXorBits );
848 return HICON_32(hObj);
849 }
850
851
852 /**********************************************************************
853 * .ANI cursor support
854 */
855 #define RIFF_FOURCC( c0, c1, c2, c3 ) \
856 ( (DWORD)(BYTE)(c0) | ( (DWORD)(BYTE)(c1) << 8 ) | \
857 ( (DWORD)(BYTE)(c2) << 16 ) | ( (DWORD)(BYTE)(c3) << 24 ) )
858
859 #define ANI_RIFF_ID RIFF_FOURCC('R', 'I', 'F', 'F')
860 #define ANI_LIST_ID RIFF_FOURCC('L', 'I', 'S', 'T')
861 #define ANI_ACON_ID RIFF_FOURCC('A', 'C', 'O', 'N')
862 #define ANI_anih_ID RIFF_FOURCC('a', 'n', 'i', 'h')
863 #define ANI_seq__ID RIFF_FOURCC('s', 'e', 'q', ' ')
864 #define ANI_fram_ID RIFF_FOURCC('f', 'r', 'a', 'm')
865
866 #define ANI_FLAG_ICON 0x1
867 #define ANI_FLAG_SEQUENCE 0x2
868
869 typedef struct {
870 DWORD header_size;
871 DWORD num_frames;
872 DWORD num_steps;
873 DWORD width;
874 DWORD height;
875 DWORD bpp;
876 DWORD num_planes;
877 DWORD display_rate;
878 DWORD flags;
879 } ani_header;
880
881 typedef struct {
882 DWORD data_size;
883 const unsigned char *data;
884 } riff_chunk_t;
885
886 static void dump_ani_header( const ani_header *header )
887 {
888 TRACE(" header size: %d\n", header->header_size);
889 TRACE(" frames: %d\n", header->num_frames);
890 TRACE(" steps: %d\n", header->num_steps);
891 TRACE(" width: %d\n", header->width);
892 TRACE(" height: %d\n", header->height);
893 TRACE(" bpp: %d\n", header->bpp);
894 TRACE(" planes: %d\n", header->num_planes);
895 TRACE(" display rate: %d\n", header->display_rate);
896 TRACE(" flags: 0x%08x\n", header->flags);
897 }
898
899
900 /*
901 * RIFF:
902 * DWORD "RIFF"
903 * DWORD size
904 * DWORD riff_id
905 * BYTE[] data
906 *
907 * LIST:
908 * DWORD "LIST"
909 * DWORD size
910 * DWORD list_id
911 * BYTE[] data
912 *
913 * CHUNK:
914 * DWORD chunk_id
915 * DWORD size
916 * BYTE[] data
917 */
918 static void riff_find_chunk( DWORD chunk_id, DWORD chunk_type, const riff_chunk_t *parent_chunk, riff_chunk_t *chunk )
919 {
920 const unsigned char *ptr = parent_chunk->data;
921 const unsigned char *end = parent_chunk->data + (parent_chunk->data_size - (2 * sizeof(DWORD)));
922
923 if (chunk_type == ANI_LIST_ID || chunk_type == ANI_RIFF_ID) end -= sizeof(DWORD);
924
925 while (ptr < end)
926 {
927 if ((!chunk_type && *(DWORD *)ptr == chunk_id )
928 || (chunk_type && *(DWORD *)ptr == chunk_type && *((DWORD *)ptr + 2) == chunk_id ))
929 {
930 ptr += sizeof(DWORD);
931 chunk->data_size = *(DWORD *)ptr;
932 ptr += sizeof(DWORD);
933 if (chunk_type == ANI_LIST_ID || chunk_type == ANI_RIFF_ID) ptr += sizeof(DWORD);
934 chunk->data = ptr;
935
936 return;
937 }
938
939 ptr += sizeof(DWORD);
940 ptr += *(DWORD *)ptr;
941 ptr += sizeof(DWORD);
942 }
943 }
944
945
946 /*
947 * .ANI layout:
948 *
949 * RIFF:'ACON' RIFF chunk
950 * |- CHUNK:'anih' Header
951 * |- CHUNK:'seq ' Sequence information (optional)
952 * \- LIST:'fram' Frame list
953 * |- CHUNK:icon Cursor frames
954 * |- CHUNK:icon
955 * |- ...
956 * \- CHUNK:icon
957 */
958 static HCURSOR CURSORICON_CreateIconFromANI( const LPBYTE bits, DWORD bits_size,
959 INT width, INT height, INT colors )
960 {
961 HCURSOR cursor;
962 ani_header header = {0};
963 LPBYTE frame_bits = 0;
964 POINT16 hotspot;
965 CURSORICONFILEDIRENTRY *entry;
966
967 riff_chunk_t root_chunk = { bits_size, bits };
968 riff_chunk_t ACON_chunk = {0};
969 riff_chunk_t anih_chunk = {0};
970 riff_chunk_t fram_chunk = {0};
971 const unsigned char *icon_data;
972
973 TRACE("bits %p, bits_size %d\n", bits, bits_size);
974
975 if (!bits) return 0;
976
977 riff_find_chunk( ANI_ACON_ID, ANI_RIFF_ID, &root_chunk, &ACON_chunk );
978 if (!ACON_chunk.data)
979 {
980 ERR("Failed to get root chunk.\n");
981 return 0;
982 }
983
984 riff_find_chunk( ANI_anih_ID, 0, &ACON_chunk, &anih_chunk );
985 if (!anih_chunk.data)
986 {
987 ERR("Failed to get 'anih' chunk.\n");
988 return 0;
989 }
990 memcpy( &header, anih_chunk.data, sizeof(header) );
991 dump_ani_header( &header );
992
993 riff_find_chunk( ANI_fram_ID, ANI_LIST_ID, &ACON_chunk, &fram_chunk );
994 if (!fram_chunk.data)
995 {
996 ERR("Failed to get icon list.\n");
997 return 0;
998 }
999
1000 /* FIXME: For now, just load the first frame. Before we can load all the
1001 * frames, we need to write the needed code in wineserver, etc. to handle
1002 * cursors. Once this code is written, we can extend it to support .ani
1003 * cursors and then update user32 and winex11.drv to load all frames.
1004 *
1005 * Hopefully this will at least make some games (C&C3, etc.) more playable
1006 * in the meantime.
1007 */
1008 FIXME("Loading all frames for .ani cursors not implemented.\n");
1009 icon_data = fram_chunk.data + (2 * sizeof(DWORD));
1010
1011 entry = CURSORICON_FindBestIconFile( (CURSORICONFILEDIR *) icon_data,
1012 width, height, colors );
1013
1014 frame_bits = HeapAlloc( GetProcessHeap(), 0, entry->dwDIBSize );
1015 memcpy( frame_bits, icon_data + entry->dwDIBOffset, entry->dwDIBSize );
1016
1017 if (!header.width || !header.height)
1018 {
1019 header.width = entry->bWidth;
1020 header.height = entry->bHeight;
1021 }
1022
1023 hotspot.x = entry->xHotspot;
1024 hotspot.y = entry->yHotspot;
1025
1026 cursor = CURSORICON_CreateIconFromBMI( (BITMAPINFO *) frame_bits, hotspot,
1027 FALSE, 0x00030000, header.width, header.height, 0 );
1028
1029 HeapFree( GetProcessHeap(), 0, frame_bits );
1030
1031 return cursor;
1032 }
1033
1034
1035 /**********************************************************************
1036 * CreateIconFromResourceEx (USER32.@)
1037 *
1038 * FIXME: Convert to mono when cFlag is LR_MONOCHROME. Do something
1039 * with cbSize parameter as well.
1040 */
1041 HICON WINAPI CreateIconFromResourceEx( LPBYTE bits, UINT cbSize,
1042 BOOL bIcon, DWORD dwVersion,
1043 INT width, INT height,
1044 UINT cFlag )
1045 {
1046 POINT16 hotspot;
1047 BITMAPINFO *bmi;
1048
1049 hotspot.x = ICON_HOTSPOT;
1050 hotspot.y = ICON_HOTSPOT;
1051
1052 TRACE_(cursor)("%p (%u bytes), ver %08x, %ix%i %s %s\n",
1053 bits, cbSize, dwVersion, width, height,
1054 bIcon ? "icon" : "cursor", (cFlag & LR_MONOCHROME) ? "mono" : "" );
1055
1056 if (bIcon)
1057 bmi = (BITMAPINFO *)bits;
1058 else /* get the hotspot */
1059 {
1060 POINT16 *pt = (POINT16 *)bits;
1061 hotspot = *pt;
1062 bmi = (BITMAPINFO *)(pt + 1);
1063 }
1064
1065 return CURSORICON_CreateIconFromBMI( bmi, hotspot, bIcon, dwVersion,
1066 width, height, cFlag );
1067 }
1068
1069
1070 /**********************************************************************
1071 * CreateIconFromResource (USER32.@)
1072 */
1073 HICON WINAPI CreateIconFromResource( LPBYTE bits, UINT cbSize,
1074 BOOL bIcon, DWORD dwVersion)
1075 {
1076 return CreateIconFromResourceEx( bits, cbSize, bIcon, dwVersion, 0,0,0);
1077 }
1078
1079
1080 static HICON CURSORICON_LoadFromFile( LPCWSTR filename,
1081 INT width, INT height, INT colors,
1082 BOOL fCursor, UINT loadflags)
1083 {
1084 CURSORICONFILEDIRENTRY *entry;
1085 CURSORICONFILEDIR *dir;
1086 DWORD filesize = 0;
1087 HICON hIcon = 0;
1088 LPBYTE bits;
1089 POINT16 hotspot;
1090
1091 TRACE("loading %s\n", debugstr_w( filename ));
1092
1093 bits = map_fileW( filename, &filesize );
1094 if (!bits)
1095 return hIcon;
1096
1097 /* Check for .ani. */
1098 if (memcmp( bits, "RIFF", 4 ) == 0)
1099 {
1100 hIcon = CURSORICON_CreateIconFromANI( bits, filesize, width, height,
1101 colors );
1102 goto end;
1103 }
1104
1105 dir = (CURSORICONFILEDIR*) bits;
1106 if ( filesize < sizeof(*dir) )
1107 goto end;
1108
1109 if ( filesize < (sizeof(*dir) + sizeof(dir->idEntries[0])*(dir->idCount-1)) )
1110 goto end;
1111
1112 if ( fCursor )
1113 entry = CURSORICON_FindBestCursorFile( dir, width, height, colors );
1114 else
1115 entry = CURSORICON_FindBestIconFile( dir, width, height, colors );
1116
1117 if ( !entry )
1118 goto end;
1119
1120 /* check that we don't run off the end of the file */
1121 if ( entry->dwDIBOffset > filesize )
1122 goto end;
1123 if ( entry->dwDIBOffset + entry->dwDIBSize > filesize )
1124 goto end;
1125
1126 /* Set the actual hotspot for cursors and ICON_HOTSPOT for icons. */
1127 if ( fCursor )
1128 {
1129 hotspot.x = entry->xHotspot;
1130 hotspot.y = entry->yHotspot;
1131 }
1132 else
1133 {
1134 hotspot.x = ICON_HOTSPOT;
1135 hotspot.y = ICON_HOTSPOT;
1136 }
1137 hIcon = CURSORICON_CreateIconFromBMI( (BITMAPINFO *)&bits[entry->dwDIBOffset],
1138 hotspot, !fCursor, 0x00030000,
1139 width, height, loadflags );
1140 end:
1141 TRACE("loaded %s -> %p\n", debugstr_w( filename ), hIcon );
1142 UnmapViewOfFile( bits );
1143 return hIcon;
1144 }
1145
1146 /**********************************************************************
1147 * CURSORICON_Load
1148 *
1149 * Load a cursor or icon from resource or file.
1150 */
1151 static HICON CURSORICON_Load(HINSTANCE hInstance, LPCWSTR name,
1152 INT width, INT height, INT colors,
1153 BOOL fCursor, UINT loadflags)
1154 {
1155 HANDLE handle = 0;
1156 HICON hIcon = 0;
1157 HRSRC hRsrc, hGroupRsrc;
1158 CURSORICONDIR *dir;
1159 CURSORICONDIRENTRY *dirEntry;
1160 LPBYTE bits;
1161 WORD wResId;
1162 DWORD dwBytesInRes;
1163
1164 TRACE("%p, %s, %dx%d, colors %d, fCursor %d, flags 0x%04x\n",
1165 hInstance, debugstr_w(name), width, height, colors, fCursor, loadflags);
1166
1167 if ( loadflags & LR_LOADFROMFILE ) /* Load from file */
1168 return CURSORICON_LoadFromFile( name, width, height, colors, fCursor, loadflags );
1169
1170 if (!hInstance) hInstance = user32_module; /* Load OEM cursor/icon */
1171
1172 /* Normalize hInstance (must be uniquely represented for icon cache) */
1173
1174 if (!HIWORD( hInstance ))
1175 hInstance = HINSTANCE_32(GetExePtr( HINSTANCE_16(hInstance) ));
1176
1177 /* Get directory resource ID */
1178
1179 if (!(hRsrc = FindResourceW( hInstance, name,
1180 (LPWSTR)(fCursor ? RT_GROUP_CURSOR : RT_GROUP_ICON) )))
1181 return 0;
1182 hGroupRsrc = hRsrc;
1183
1184 /* Find the best entry in the directory */
1185
1186 if (!(handle = LoadResource( hInstance, hRsrc ))) return 0;
1187 if (!(dir = LockResource( handle ))) return 0;
1188 if (fCursor)
1189 dirEntry = CURSORICON_FindBestCursorRes( dir, width, height, colors );
1190 else
1191 dirEntry = CURSORICON_FindBestIconRes( dir, width, height, colors );
1192 if (!dirEntry) return 0;
1193 wResId = dirEntry->wResId;
1194 dwBytesInRes = dirEntry->dwBytesInRes;
1195 FreeResource( handle );
1196
1197 /* Load the resource */
1198
1199 if (!(hRsrc = FindResourceW(hInstance,MAKEINTRESOURCEW(wResId),
1200 (LPWSTR)(fCursor ? RT_CURSOR : RT_ICON) ))) return 0;
1201
1202 /* If shared icon, check whether it was already loaded */
1203 if ( (loadflags & LR_SHARED)
1204 && (hIcon = CURSORICON_FindSharedIcon( hInstance, hRsrc ) ) != 0 )
1205 return hIcon;
1206
1207 if (!(handle = LoadResource( hInstance, hRsrc ))) return 0;
1208 bits = LockResource( handle );
1209 hIcon = CreateIconFromResourceEx( bits, dwBytesInRes,
1210 !fCursor, 0x00030000, width, height, loadflags);
1211 FreeResource( handle );
1212
1213 /* If shared icon, add to icon cache */
1214
1215 if ( hIcon && (loadflags & LR_SHARED) )
1216 CURSORICON_AddSharedIcon( hInstance, hRsrc, hGroupRsrc, hIcon );
1217
1218 return hIcon;
1219 }
1220
1221 /***********************************************************************
1222 * CURSORICON_Copy
1223 *
1224 * Make a copy of a cursor or icon.
1225 */
1226 static HICON CURSORICON_Copy( HINSTANCE16 hInst16, HICON hIcon )
1227 {
1228 char *ptrOld, *ptrNew;
1229 int size;
1230 HICON16 hOld = HICON_16(hIcon);
1231 HICON16 hNew;
1232
1233 if (!(ptrOld = GlobalLock16( hOld ))) return 0;
1234 if (hInst16 && !(hInst16 = GetExePtr( hInst16 ))) return 0;
1235 size = GlobalSize16( hOld );
1236 hNew = GlobalAlloc16( GMEM_MOVEABLE, size );
1237 FarSetOwner16( hNew, hInst16 );
1238 ptrNew = GlobalLock16( hNew );
1239 memcpy( ptrNew, ptrOld, size );
1240 GlobalUnlock16( hOld );
1241 GlobalUnlock16( hNew );
1242 return HICON_32(hNew);
1243 }
1244
1245 /*************************************************************************
1246 * CURSORICON_ExtCopy
1247 *
1248 * Copies an Image from the Cache if LR_COPYFROMRESOURCE is specified
1249 *
1250 * PARAMS
1251 * Handle [I] handle to an Image
1252 * nType [I] Type of Handle (IMAGE_CURSOR | IMAGE_ICON)
1253 * iDesiredCX [I] The Desired width of the Image
1254 * iDesiredCY [I] The desired height of the Image
1255 * nFlags [I] The flags from CopyImage
1256 *
1257 * RETURNS
1258 * Success: The new handle of the Image
1259 *
1260 * NOTES
1261 * LR_COPYDELETEORG and LR_MONOCHROME are currently not implemented.
1262 * LR_MONOCHROME should be implemented by CreateIconFromResourceEx.
1263 * LR_COPYFROMRESOURCE will only work if the Image is in the Cache.
1264 *
1265 *
1266 */
1267
1268 static HICON CURSORICON_ExtCopy(HICON hIcon, UINT nType,
1269 INT iDesiredCX, INT iDesiredCY,
1270 UINT nFlags)
1271 {
1272 HICON hNew=0;
1273
1274 TRACE_(icon)("hIcon %p, nType %u, iDesiredCX %i, iDesiredCY %i, nFlags %u\n",
1275 hIcon, nType, iDesiredCX, iDesiredCY, nFlags);
1276
1277 if(hIcon == 0)
1278 {
1279 return 0;
1280 }
1281
1282 /* Best Fit or Monochrome */
1283 if( (nFlags & LR_COPYFROMRESOURCE
1284 && (iDesiredCX > 0 || iDesiredCY > 0))
1285 || nFlags & LR_MONOCHROME)
1286 {
1287 ICONCACHE* pIconCache = CURSORICON_FindCache(hIcon);
1288
1289 /* Not Found in Cache, then do a straight copy
1290 */
1291 if(pIconCache == NULL)
1292 {
1293 hNew = CURSORICON_Copy(0, hIcon);
1294 if(nFlags & LR_COPYFROMRESOURCE)
1295 {
1296 TRACE_(icon)("LR_COPYFROMRESOURCE: Failed to load from cache\n");
1297 }
1298 }
1299 else
1300 {
1301 int iTargetCY = iDesiredCY, iTargetCX = iDesiredCX;
1302 LPBYTE pBits;
1303 HANDLE hMem;
1304 HRSRC hRsrc;
1305 DWORD dwBytesInRes;
1306 WORD wResId;
1307 CURSORICONDIR *pDir;
1308 CURSORICONDIRENTRY *pDirEntry;
1309 BOOL bIsIcon = (nType == IMAGE_ICON);
1310
1311 /* Completing iDesiredCX CY for Monochrome Bitmaps if needed
1312 */
1313 if(((nFlags & LR_MONOCHROME) && !(nFlags & LR_COPYFROMRESOURCE))
1314 || (iDesiredCX == 0 && iDesiredCY == 0))
1315 {
1316 iDesiredCY = GetSystemMetrics(bIsIcon ?
1317 SM_CYICON : SM_CYCURSOR);
1318 iDesiredCX = GetSystemMetrics(bIsIcon ?
1319 SM_CXICON : SM_CXCURSOR);
1320 }
1321
1322 /* Retrieve the CURSORICONDIRENTRY
1323 */
1324 if (!(hMem = LoadResource( pIconCache->hModule ,
1325 pIconCache->hGroupRsrc)))
1326 {
1327 return 0;
1328 }
1329 if (!(pDir = LockResource( hMem )))
1330 {
1331 return 0;
1332 }
1333
1334 /* Find Best Fit
1335 */
1336 if(bIsIcon)
1337 {
1338 pDirEntry = CURSORICON_FindBestIconRes(
1339 pDir, iDesiredCX, iDesiredCY, 256 );
1340 }
1341 else
1342 {
1343 pDirEntry = CURSORICON_FindBestCursorRes(
1344 pDir, iDesiredCX, iDesiredCY, 1);
1345 }
1346
1347 wResId = pDirEntry->wResId;
1348 dwBytesInRes = pDirEntry->dwBytesInRes;
1349 FreeResource(hMem);
1350
1351 TRACE_(icon)("ResID %u, BytesInRes %u, Width %d, Height %d DX %d, DY %d\n",
1352 wResId, dwBytesInRes, pDirEntry->ResInfo.icon.bWidth,
1353 pDirEntry->ResInfo.icon.bHeight, iDesiredCX, iDesiredCY);
1354
1355 /* Get the Best Fit
1356 */
1357 if (!(hRsrc = FindResourceW(pIconCache->hModule ,
1358 MAKEINTRESOURCEW(wResId), (LPWSTR)(bIsIcon ? RT_ICON : RT_CURSOR))))
1359 {
1360 return 0;
1361 }
1362 if (!(hMem = LoadResource( pIconCache->hModule , hRsrc )))
1363 {
1364 return 0;
1365 }
1366
1367 pBits = LockResource( hMem );
1368
1369 if(nFlags & LR_DEFAULTSIZE)
1370 {
1371 iTargetCY = GetSystemMetrics(SM_CYICON);
1372 iTargetCX = GetSystemMetrics(SM_CXICON);
1373 }
1374
1375 /* Create a New Icon with the proper dimension
1376 */
1377 hNew = CreateIconFromResourceEx( pBits, dwBytesInRes,
1378 bIsIcon, 0x00030000, iTargetCX, iTargetCY, nFlags);
1379 FreeResource(hMem);
1380 }
1381 }
1382 else hNew = CURSORICON_Copy(0, hIcon);
1383 return hNew;
1384 }
1385
1386
1387 /***********************************************************************
1388 * CreateCursor (USER32.@)
1389 */
1390 HCURSOR WINAPI CreateCursor( HINSTANCE hInstance,
1391 INT xHotSpot, INT yHotSpot,
1392 INT nWidth, INT nHeight,
1393 LPCVOID lpANDbits, LPCVOID lpXORbits )
1394 {
1395 CURSORICONINFO info;
1396
1397 TRACE_(cursor)("%dx%d spot=%d,%d xor=%p and=%p\n",
1398 nWidth, nHeight, xHotSpot, yHotSpot, lpXORbits, lpANDbits);
1399
1400 info.ptHotSpot.x = xHotSpot;
1401 info.ptHotSpot.y = yHotSpot;
1402 info.nWidth = nWidth;
1403 info.nHeight = nHeight;
1404 info.nWidthBytes = 0;
1405 info.bPlanes = 1;
1406 info.bBitsPerPixel = 1;
1407
1408 return HICON_32(CreateCursorIconIndirect16(0, &info, lpANDbits, lpXORbits));
1409 }
1410
1411
1412 /***********************************************************************
1413 * CreateIcon (USER.407)
1414 */
1415 HICON16 WINAPI CreateIcon16( HINSTANCE16 hInstance, INT16 nWidth,
1416 INT16 nHeight, BYTE bPlanes, BYTE bBitsPixel,
1417 LPCVOID lpANDbits, LPCVOID lpXORbits )
1418 {
1419 CURSORICONINFO info;
1420
1421 TRACE_(icon)("%dx%dx%d, xor=%p, and=%p\n",
1422 nWidth, nHeight, bPlanes * bBitsPixel, lpXORbits, lpANDbits);
1423
1424 info.ptHotSpot.x = ICON_HOTSPOT;
1425 info.ptHotSpot.y = ICON_HOTSPOT;
1426 info.nWidth = nWidth;
1427 info.nHeight = nHeight;
1428 info.nWidthBytes = 0;
1429 info.bPlanes = bPlanes;
1430 info.bBitsPerPixel = bBitsPixel;
1431
1432 return CreateCursorIconIndirect16( hInstance, &info, lpANDbits, lpXORbits );
1433 }
1434
1435
1436 /***********************************************************************
1437 * CreateIcon (USER32.@)
1438 *
1439 * Creates an icon based on the specified bitmaps. The bitmaps must be
1440 * provided in a device dependent format and will be resized to
1441 * (SM_CXICON,SM_CYICON) and depth converted to match the screen's color
1442 * depth. The provided bitmaps must be top-down bitmaps.
1443 * Although Windows does not support 15bpp(*) this API must support it
1444 * for Winelib applications.
1445 *
1446 * (*) Windows does not support 15bpp but it supports the 555 RGB 16bpp
1447 * format!
1448 *
1449 * RETURNS
1450 * Success: handle to an icon
1451 * Failure: NULL
1452 *
1453 * FIXME: Do we need to resize the bitmaps?
1454 */
1455 HICON WINAPI CreateIcon(
1456 HINSTANCE hInstance, /* [in] the application's hInstance */
1457 INT nWidth, /* [in] the width of the provided bitmaps */
1458 INT nHeight, /* [in] the height of the provided bitmaps */
1459 BYTE bPlanes, /* [in] the number of planes in the provided bitmaps */
1460 BYTE bBitsPixel, /* [in] the number of bits per pixel of the lpXORbits bitmap */
1461 LPCVOID lpANDbits, /* [in] a monochrome bitmap representing the icon's mask */
1462 LPCVOID lpXORbits) /* [in] the icon's 'color' bitmap */
1463 {
1464 ICONINFO iinfo;
1465 HICON hIcon;
1466
1467 TRACE_(icon)("%dx%d, planes %d, bpp %d, xor %p, and %p\n",
1468 nWidth, nHeight, bPlanes, bBitsPixel, lpXORbits, lpANDbits);
1469
1470 iinfo.fIcon = TRUE;
1471 iinfo.xHotspot = ICON_HOTSPOT;
1472 iinfo.yHotspot = ICON_HOTSPOT;
1473 iinfo.hbmMask = CreateBitmap( nWidth, nHeight, 1, 1, lpANDbits );
1474 iinfo.hbmColor = CreateBitmap( nWidth, nHeight, bPlanes, bBitsPixel, lpXORbits );
1475
1476 hIcon = CreateIconIndirect( &iinfo );
1477
1478 DeleteObject( iinfo.hbmMask );
1479 DeleteObject( iinfo.hbmColor );
1480
1481 return hIcon;
1482 }
1483
1484
1485 /***********************************************************************
1486 * CreateCursorIconIndirect (USER.408)
1487 */
1488 HGLOBAL16 WINAPI CreateCursorIconIndirect16( HINSTANCE16 hInstance,
1489 CURSORICONINFO *info,
1490 LPCVOID lpANDbits,
1491 LPCVOID lpXORbits )
1492 {
1493 HGLOBAL16 handle;
1494 char *ptr;
1495 int sizeAnd, sizeXor;
1496
1497 hInstance = GetExePtr( hInstance ); /* Make it a module handle */
1498 if (!lpXORbits || !lpANDbits || info->bPlanes != 1) return 0;
1499 info->nWidthBytes = get_bitmap_width_bytes(info->nWidth,info->bBitsPerPixel);
1500 sizeXor = info->nHeight * info->nWidthBytes;
1501 sizeAnd = info->nHeight * get_bitmap_width_bytes( info->nWidth, 1 );
1502 if (!(handle = GlobalAlloc16( GMEM_MOVEABLE,
1503 sizeof(CURSORICONINFO) + sizeXor + sizeAnd)))
1504 return 0;
1505 FarSetOwner16( handle, hInstance );
1506 ptr = GlobalLock16( handle );
1507 memcpy( ptr, info, sizeof(*info) );
1508 memcpy( ptr + sizeof(CURSORICONINFO), lpANDbits, sizeAnd );
1509 memcpy( ptr + sizeof(CURSORICONINFO) + sizeAnd, lpXORbits, sizeXor );
1510 GlobalUnlock16( handle );
1511 return handle;
1512 }
1513
1514
1515 /***********************************************************************
1516 * CopyIcon (USER.368)
1517 */
1518 HICON16 WINAPI CopyIcon16( HINSTANCE16 hInstance, HICON16 hIcon )
1519 {
1520 TRACE_(icon)("%04x %04x\n", hInstance, hIcon );
1521 return HICON_16(CURSORICON_Copy(hInstance, HICON_32(hIcon)));
1522 }
1523
1524
1525 /***********************************************************************
1526 * CopyIcon (USER32.@)
1527 */
1528 HICON WINAPI CopyIcon( HICON hIcon )
1529 {
1530 TRACE_(icon)("%p\n", hIcon );
1531 return CURSORICON_Copy( 0, hIcon );
1532 }
1533
1534
1535 /***********************************************************************
1536 * CopyCursor (USER.369)
1537 */
1538 HCURSOR16 WINAPI CopyCursor16( HINSTANCE16 hInstance, HCURSOR16 hCursor )
1539 {
1540 TRACE_(cursor)("%04x %04x\n", hInstance, hCursor );
1541 return HICON_16(CURSORICON_Copy(hInstance, HCURSOR_32(hCursor)));
1542 }
1543
1544 /**********************************************************************
1545 * DestroyIcon32 (USER.610)
1546 *
1547 * This routine is actually exported from Win95 USER under the name
1548 * DestroyIcon32 ... The behaviour implemented here should mimic
1549 * the Win95 one exactly, especially the return values, which
1550 * depend on the setting of various flags.
1551 */
1552 WORD WINAPI DestroyIcon32( HGLOBAL16 handle, UINT16 flags )
1553 {
1554 WORD retv;
1555
1556 TRACE_(icon)("(%04x, %04x)\n", handle, flags );
1557
1558 /* Check whether destroying active cursor */
1559
1560 if ( get_user_thread_info()->cursor == HICON_32(handle) )
1561 {
1562 WARN_(cursor)("Destroying active cursor!\n" );
1563 return FALSE;
1564 }
1565
1566 /* Try shared cursor/icon first */
1567
1568 if ( !(flags & CID_NONSHARED) )
1569 {
1570 INT count = CURSORICON_DelSharedIcon(HICON_32(handle));
1571
1572 if ( count != -1 )
1573 return (flags & CID_WIN32)? TRUE : (count == 0);
1574
1575 /* FIXME: OEM cursors/icons should be recognized */
1576 }
1577
1578 /* Now assume non-shared cursor/icon */
1579
1580 retv = GlobalFree16( handle );
1581 return (flags & CID_RESOURCE)? retv : TRUE;
1582 }
1583
1584 /***********************************************************************
1585 * DestroyIcon (USER32.@)
1586 */
1587 BOOL WINAPI DestroyIcon( HICON hIcon )
1588 {
1589 return DestroyIcon32(HICON_16(hIcon), CID_WIN32);
1590 }
1591
1592
1593 /***********************************************************************
1594 * DestroyCursor (USER32.@)
1595 */
1596 BOOL WINAPI DestroyCursor( HCURSOR hCursor )
1597 {
1598 return DestroyIcon32(HCURSOR_16(hCursor), CID_WIN32);
1599 }
1600
1601 /***********************************************************************
1602 * bitmap_has_alpha_channel
1603 *
1604 * Analyses bits bitmap to determine if alpha data is present.
1605 *
1606 * PARAMS
1607 * bpp [I] The bits-per-pixel of the bitmap
1608 * bitmapBits [I] A pointer to the bitmap data
1609 * bitmapLength [I] The length of the bitmap in bytes
1610 *
1611 * RETURNS
1612 * TRUE if an alpha channel is discovered, FALSE
1613 *
1614 * NOTE
1615 * Windows' behaviour is that if the icon bitmap is 32-bit and at
1616 * least one pixel has a non-zero alpha, then the bitmap is a
1617 * treated as having an alpha channel transparentcy. Otherwise,
1618 * it's treated as being completely opaque.
1619 *
1620 */
1621 static BOOL bitmap_has_alpha_channel( int bpp, unsigned char *bitmapBits,
1622 unsigned int bitmapLength )
1623 {
1624 /* Detect an alpha channel by looking for non-zero alpha pixels */
1625 if(bpp == 32)
1626 {
1627 unsigned int offset;
1628 for(offset = 3; offset < bitmapLength; offset += 4)
1629 {
1630 if(bitmapBits[offset] != 0)
1631 {
1632 return TRUE;
1633 }
1634 }
1635 }
1636 return FALSE;
1637 }
1638
1639 /***********************************************************************
1640 * premultiply_alpha_channel
1641 *
1642 * Premultiplies the color channels of a 32-bit bitmap by the alpha
1643 * channel. This is a necessary step that must be carried out on
1644 * the image before it is passed to GdiAlphaBlend
1645 *
1646 * PARAMS
1647 * destBitmap [I] The destination bitmap buffer
1648 * srcBitmap [I] The source bitmap buffer
1649 * bitmapLength [I] The length of the bitmap in bytes
1650 *
1651 */
1652 static void premultiply_alpha_channel( unsigned char *destBitmap,
1653 unsigned char *srcBitmap,
1654 unsigned int bitmapLength )
1655 {
1656 unsigned char *destPixel = destBitmap;
1657 unsigned char *srcPixel = srcBitmap;
1658
1659 while(destPixel < destBitmap + bitmapLength)
1660 {
1661 unsigned char alpha = srcPixel[3];
1662 *(destPixel++) = *(srcPixel++) * alpha / 255;
1663 *(destPixel++) = *(srcPixel++) * alpha / 255;
1664 *(destPixel++) = *(srcPixel++) * alpha / 255;
1665 *(destPixel++) = *(srcPixel++);
1666 }
1667 }
1668
1669 /***********************************************************************
1670 * DrawIcon (USER32.@)
1671 */
1672 BOOL WINAPI DrawIcon( HDC hdc, INT x, INT y, HICON hIcon )
1673 {
1674 CURSORICONINFO *ptr;
1675 HDC hMemDC;
1676 HBITMAP hXorBits = NULL, hAndBits = NULL, hBitTemp = NULL;
1677 COLORREF oldFg, oldBg;
1678 unsigned char *xorBitmapBits;
1679 unsigned int dibLength;
1680
1681 TRACE("%p, (%d,%d), %p\n", hdc, x, y, hIcon);
1682
1683 if (!(ptr = GlobalLock16(HICON_16(hIcon)))) return FALSE;
1684 if (!(hMemDC = CreateCompatibleDC( hdc ))) return FALSE;
1685
1686 dibLength = ptr->nHeight * get_bitmap_width_bytes(
1687 ptr->nWidth, ptr->bBitsPerPixel);
1688
1689 xorBitmapBits = (unsigned char *)(ptr + 1) + ptr->nHeight *
1690 get_bitmap_width_bytes(ptr->nWidth, 1);
1691
1692 oldFg = SetTextColor( hdc, RGB(0,0,0) );
1693 oldBg = SetBkColor( hdc, RGB(255,255,255) );
1694
1695 if(bitmap_has_alpha_channel(ptr->bBitsPerPixel, xorBitmapBits, dibLength))
1696 {
1697 BITMAPINFOHEADER bmih;
1698 unsigned char *dibBits;
1699
1700 memset(&bmih, 0, sizeof(BITMAPINFOHEADER));
1701 bmih.biSize = sizeof(BITMAPINFOHEADER);
1702 bmih.biWidth = ptr->nWidth;
1703 bmih.biHeight = -ptr->nHeight;
1704 bmih.biPlanes = ptr->bPlanes;
1705 bmih.biBitCount = 32;
1706 bmih.biCompression = BI_RGB;
1707
1708 hXorBits = CreateDIBSection(hdc, (BITMAPINFO*)&bmih, DIB_RGB_COLORS,
1709 (void*)&dibBits, NULL, 0);
1710
1711 if (hXorBits && dibBits)
1712 {
1713 BLENDFUNCTION pixelblend = { AC_SRC_OVER, 0, 255, AC_SRC_ALPHA };
1714
1715 /* Do the alpha blending render */
1716 premultiply_alpha_channel(dibBits, xorBitmapBits, dibLength);
1717 hBitTemp = SelectObject( hMemDC, hXorBits );
1718 GdiAlphaBlend(hdc, x, y, ptr->nWidth, ptr->nHeight, hMemDC,
1719 0, 0, ptr->nWidth, ptr->nHeight, pixelblend);
1720 SelectObject( hMemDC, hBitTemp );
1721 }
1722 }
1723 else
1724 {
1725 hAndBits = CreateBitmap( ptr->nWidth, ptr->nHeight, 1, 1, ptr + 1 );
1726 hXorBits = CreateBitmap( ptr->nWidth, ptr->nHeight, ptr->bPlanes,
1727 ptr->bBitsPerPixel, xorBitmapBits);
1728
1729 if (hXorBits && hAndBits)
1730 {
1731 hBitTemp = SelectObject( hMemDC, hAndBits );
1732 BitBlt( hdc, x, y, ptr->nWidth, ptr->nHeight, hMemDC, 0, 0, SRCAND );
1733 SelectObject( hMemDC, hXorBits );
1734 BitBlt(hdc, x, y, ptr->nWidth, ptr->nHeight, hMemDC, 0, 0,SRCINVERT);
1735 SelectObject( hMemDC, hBitTemp );
1736 }
1737 }
1738
1739 DeleteDC( hMemDC );
1740 if (hXorBits) DeleteObject( hXorBits );
1741 if (hAndBits) DeleteObject( hAndBits );
1742 GlobalUnlock16(HICON_16(hIcon));
1743 SetTextColor( hdc, oldFg );
1744 SetBkColor( hdc, oldBg );
1745 return TRUE;
1746 }
1747
1748 /***********************************************************************
1749 * DumpIcon (USER.459)
1750 */
1751 DWORD WINAPI DumpIcon16( SEGPTR pInfo, WORD *lpLen,
1752 SEGPTR *lpXorBits, SEGPTR *lpAndBits )
1753 {
1754 CURSORICONINFO *info = MapSL( pInfo );
1755 int sizeAnd, sizeXor;
1756
1757 if (!info) return 0;
1758 sizeXor = info->nHeight * info->nWidthBytes;
1759 sizeAnd = info->nHeight * get_bitmap_width_bytes( info->nWidth, 1 );
1760 if (lpAndBits) *lpAndBits = pInfo + sizeof(CURSORICONINFO);
1761 if (lpXorBits) *lpXorBits = pInfo + sizeof(CURSORICONINFO) + sizeAnd;
1762 if (lpLen) *lpLen = sizeof(CURSORICONINFO) + sizeAnd + sizeXor;
1763 return MAKELONG( sizeXor, sizeXor );
1764 }
1765
1766
1767 /***********************************************************************
1768 * SetCursor (USER32.@)
1769 *
1770 * Set the cursor shape.
1771 *
1772 * RETURNS
1773 * A handle to the previous cursor shape.
1774 */
1775 HCURSOR WINAPI SetCursor( HCURSOR hCursor /* [in] Handle of cursor to show */ )
1776 {
1777 struct user_thread_info *thread_info = get_user_thread_info();
1778 HCURSOR hOldCursor;
1779
1780 if (hCursor == thread_info->cursor) return hCursor; /* No change */
1781 TRACE("%p\n", hCursor);
1782 hOldCursor = thread_info->cursor;
1783 thread_info->cursor = hCursor;
1784 /* Change the cursor shape only if it is visible */
1785 if (thread_info->cursor_count >= 0)
1786 {
1787 USER_Driver->pSetCursor(GlobalLock16(HCURSOR_16(hCursor)));
1788 GlobalUnlock16(HCURSOR_16(hCursor));
1789 }
1790 return hOldCursor;
1791 }
1792
1793 /***********************************************************************
1794 * ShowCursor (USER32.@)
1795 */
1796 INT WINAPI ShowCursor( BOOL bShow )
1797 {
1798 struct user_thread_info *thread_info = get_user_thread_info();
1799
1800 TRACE("%d, count=%d\n", bShow, thread_info->cursor_count );
1801
1802 if (bShow)
1803 {
1804 if (++thread_info->cursor_count == 0) /* Show it */
1805 {
1806 USER_Driver->pSetCursor(GlobalLock16(HCURSOR_16(thread_info->cursor)));
1807 GlobalUnlock16(HCURSOR_16(thread_info->cursor));
1808 }
1809 }
1810 else
1811 {
1812 if (--thread_info->cursor_count == -1) /* Hide it */
1813 USER_Driver->pSetCursor( NULL );
1814 }
1815 return thread_info->cursor_count;
1816 }
1817
1818 /***********************************************************************
1819 * GetCursor (USER32.@)
1820 */
1821 HCURSOR WINAPI GetCursor(void)
1822 {
1823 return get_user_thread_info()->cursor;
1824 }
1825
1826
1827 /***********************************************************************
1828 * ClipCursor (USER32.@)
1829 */
1830 BOOL WINAPI ClipCursor( const RECT *rect )
1831 {
1832 RECT virt;
1833
1834 SetRect( &virt, 0, 0, GetSystemMetrics( SM_CXVIRTUALSCREEN ),
1835 GetSystemMetrics( SM_CYVIRTUALSCREEN ) );
1836 OffsetRect( &virt, GetSystemMetrics( SM_XVIRTUALSCREEN ),
1837 GetSystemMetrics( SM_YVIRTUALSCREEN ) );
1838
1839 TRACE( "Clipping to: %s was: %s screen: %s\n", wine_dbgstr_rect(rect),
1840 wine_dbgstr_rect(&CURSOR_ClipRect), wine_dbgstr_rect(&virt) );
1841
1842 if (!IntersectRect( &CURSOR_ClipRect, &virt, rect ))
1843 CURSOR_ClipRect = virt;
1844
1845 USER_Driver->pClipCursor( rect );
1846 return TRUE;
1847 }
1848
1849
1850 /***********************************************************************
1851 * GetClipCursor (USER32.@)
1852 */
1853 BOOL WINAPI GetClipCursor( RECT *rect )
1854 {
1855 /* If this is first time - initialize the rect */
1856 if (IsRectEmpty( &CURSOR_ClipRect )) ClipCursor( NULL );
1857
1858 return CopyRect( rect, &CURSOR_ClipRect );
1859 }
1860
1861
1862 /***********************************************************************
1863 * SetSystemCursor (USER32.@)
1864 */
1865 BOOL WINAPI SetSystemCursor(HCURSOR hcur, DWORD id)
1866 {
1867 FIXME("(%p,%08x),stub!\n", hcur, id);
1868 return TRUE;
1869 }
1870
1871
1872 /**********************************************************************
1873 * LookupIconIdFromDirectoryEx (USER.364)
1874 *
1875 * FIXME: exact parameter sizes
1876 */
1877 INT16 WINAPI LookupIconIdFromDirectoryEx16( LPBYTE dir, BOOL16 bIcon,
1878 INT16 width, INT16 height, UINT16 cFlag )
1879 {
1880 return LookupIconIdFromDirectoryEx( dir, bIcon, width, height, cFlag );
1881 }
1882
1883 /**********************************************************************
1884 * LookupIconIdFromDirectoryEx (USER32.@)
1885 */
1886 INT WINAPI LookupIconIdFromDirectoryEx( LPBYTE xdir, BOOL bIcon,
1887 INT width, INT height, UINT cFlag )
1888 {
1889 CURSORICONDIR *dir = (CURSORICONDIR*)xdir;
1890 UINT retVal = 0;
1891 if( dir && !dir->idReserved && (dir->idType & 3) )
1892 {
1893 CURSORICONDIRENTRY* entry;
1894 HDC hdc;
1895 UINT palEnts;
1896 int colors;
1897 hdc = GetDC(0);
1898 palEnts = GetSystemPaletteEntries(hdc, 0, 0, NULL);
1899 if (palEnts == 0)
1900 palEnts = 256;
1901 colors = (cFlag & LR_MONOCHROME) ? 2 : palEnts;
1902
1903 ReleaseDC(0, hdc);
1904
1905 if( bIcon )
1906 entry = CURSORICON_FindBestIconRes( dir, width, height, colors );
1907 else
1908 entry = CURSORICON_FindBestCursorRes( dir, width, height, colors );
1909
1910 if( entry ) retVal = entry->wResId;
1911 }
1912 else WARN_(cursor)("invalid resource directory\n");
1913 return retVal;
1914 }
1915
1916 /**********************************************************************
1917 * LookupIconIdFromDirectory (USER32.@)
1918 */
1919 INT WINAPI LookupIconIdFromDirectory( LPBYTE dir, BOOL bIcon )
1920 {
1921 return LookupIconIdFromDirectoryEx( dir, bIcon,
1922 bIcon ? GetSystemMetrics(SM_CXICON) : GetSystemMetrics(SM_CXCURSOR),
1923 bIcon ? GetSystemMetrics(SM_CYICON) : GetSystemMetrics(SM_CYCURSOR), bIcon ? 0 : LR_MONOCHROME );
1924 }
1925
1926 /**********************************************************************
1927 * GetIconID (USER.455)
1928 */
1929 WORD WINAPI GetIconID16( HGLOBAL16 hResource, DWORD resType )
1930 {
1931 LPBYTE lpDir = GlobalLock16(hResource);
1932
1933 TRACE_(cursor)("hRes=%04x, entries=%i\n",
1934 hResource, lpDir ? ((CURSORICONDIR*)lpDir)->idCount : 0);
1935
1936 switch(resType)
1937 {
1938 case RT_CURSOR:
1939 return (WORD)LookupIconIdFromDirectoryEx16( lpDir, FALSE,
1940 GetSystemMetrics(SM_CXCURSOR), GetSystemMetrics(SM_CYCURSOR), LR_MONOCHROME );
1941 case RT_ICON:
1942 return (WORD)LookupIconIdFromDirectoryEx16( lpDir, TRUE,
1943 GetSystemMetrics(SM_CXICON), GetSystemMetrics(SM_CYICON), 0 );
1944 default:
1945 WARN_(cursor)("invalid res type %d\n", resType );
1946 }
1947 return 0;
1948 }
1949
1950 /**********************************************************************
1951 * LoadCursorIconHandler (USER.336)
1952 *
1953 * Supposed to load resources of Windows 2.x applications.
1954 */
1955 HGLOBAL16 WINAPI LoadCursorIconHandler16( HGLOBAL16 hResource, HMODULE16 hModule, HRSRC16 hRsrc )
1956 {
1957 FIXME_(cursor)("(%04x,%04x,%04x): old 2.x resources are not supported!\n",
1958 hResource, hModule, hRsrc);
1959 return 0;
1960 }
1961
1962 /**********************************************************************
1963 * LoadIconHandler (USER.456)
1964 */
1965 HICON16 WINAPI LoadIconHandler16( HGLOBAL16 hResource, BOOL16 bNew )
1966 {
1967 LPBYTE bits = LockResource16( hResource );
1968
1969 TRACE_(cursor)("hRes=%04x\n",hResource);
1970
1971 return HICON_16(CreateIconFromResourceEx( bits, 0, TRUE,
1972 bNew ? 0x00030000 : 0x00020000, 0, 0, LR_DEFAULTCOLOR));
1973 }
1974
1975 /***********************************************************************
1976 * LoadCursorW (USER32.@)
1977 */
1978 HCURSOR WINAPI LoadCursorW(HINSTANCE hInstance, LPCWSTR name)
1979 {
1980 TRACE("%p, %s\n", hInstance, debugstr_w(name));
1981
1982 return LoadImageW( hInstance, name, IMAGE_CURSOR, 0, 0,
1983 LR_SHARED | LR_DEFAULTSIZE );
1984 }
1985
1986 /***********************************************************************
1987 * LoadCursorA (USER32.@)
1988 */
1989 HCURSOR WINAPI LoadCursorA(HINSTANCE hInstance, LPCSTR name)
1990 {
1991 TRACE("%p, %s\n", hInstance, debugstr_a(name));
1992
1993 return LoadImageA( hInstance, name, IMAGE_CURSOR, 0, 0,
1994 LR_SHARED | LR_DEFAULTSIZE );
1995 }
1996
1997 /***********************************************************************
1998 * LoadCursorFromFileW (USER32.@)
1999 */
2000 HCURSOR WINAPI LoadCursorFromFileW (LPCWSTR name)
2001 {
2002 TRACE("%s\n", debugstr_w(name));
2003
2004 return LoadImageW( 0, name, IMAGE_CURSOR, 0, 0,
2005 LR_LOADFROMFILE | LR_DEFAULTSIZE );
2006 }
2007
2008 /***********************************************************************
2009 * LoadCursorFromFileA (USER32.@)
2010 */
2011 HCURSOR WINAPI LoadCursorFromFileA (LPCSTR name)
2012 {
2013 TRACE("%s\n", debugstr_a(name));
2014
2015 return LoadImageA( 0, name, IMAGE_CURSOR, 0, 0,
2016 LR_LOADFROMFILE | LR_DEFAULTSIZE );
2017 }
2018
2019 /***********************************************************************
2020 * LoadIconW (USER32.@)
2021 */
2022 HICON WINAPI LoadIconW(HINSTANCE hInstance, LPCWSTR name)
2023 {
2024 TRACE("%p, %s\n", hInstance, debugstr_w(name));
2025
2026 return LoadImageW( hInstance, name, IMAGE_ICON, 0, 0,
2027 LR_SHARED | LR_DEFAULTSIZE );
2028 }
2029
2030 /***********************************************************************
2031 * LoadIconA (USER32.@)
2032 */
2033 HICON WINAPI LoadIconA(HINSTANCE hInstance, LPCSTR name)
2034 {
2035 TRACE("%p, %s\n", hInstance, debugstr_a(name));
2036
2037 return LoadImageA( hInstance, name, IMAGE_ICON, 0, 0,
2038 LR_SHARED | LR_DEFAULTSIZE );
2039 }
2040
2041 /**********************************************************************
2042 * GetIconInfo (USER32.@)
2043 */
2044 BOOL WINAPI GetIconInfo(HICON hIcon, PICONINFO iconinfo)
2045 {
2046 CURSORICONINFO *ciconinfo;
2047 INT height;
2048
2049 ciconinfo = GlobalLock16(HICON_16(hIcon));
2050 if (!ciconinfo)
2051 return FALSE;
2052
2053 TRACE("%p => %dx%d, %d bpp\n", hIcon,
2054 ciconinfo->nWidth, ciconinfo->nHeight, ciconinfo->bBitsPerPixel);
2055
2056 if ( (ciconinfo->ptHotSpot.x == ICON_HOTSPOT) &&
2057 (ciconinfo->ptHotSpot.y == ICON_HOTSPOT) )
2058 {
2059 iconinfo->fIcon = TRUE;
2060 iconinfo->xHotspot = ciconinfo->nWidth / 2;
2061 iconinfo->yHotspot = ciconinfo->nHeight / 2;
2062 }
2063 else
2064 {
2065 iconinfo->fIcon = FALSE;
2066 iconinfo->xHotspot = ciconinfo->ptHotSpot.x;
2067 iconinfo->yHotspot = ciconinfo->ptHotSpot.y;
2068 }
2069
2070 height = ciconinfo->nHeight;
2071
2072 if (ciconinfo->bBitsPerPixel > 1)
2073 {
2074 iconinfo->hbmColor = CreateBitmap( ciconinfo->nWidth, ciconinfo->nHeight,
2075 ciconinfo->bPlanes, ciconinfo->bBitsPerPixel,
2076 (char *)(ciconinfo + 1)
2077 + ciconinfo->nHeight *
2078 get_bitmap_width_bytes (ciconinfo->nWidth,1) );
2079 }
2080 else
2081 {
2082 iconinfo->hbmColor = 0;
2083 height *= 2;
2084 }
2085
2086 iconinfo->hbmMask = CreateBitmap ( ciconinfo->nWidth, height,
2087 1, 1, ciconinfo + 1);
2088
2089 GlobalUnlock16(HICON_16(hIcon));
2090
2091 return TRUE;
2092 }
2093
2094 /**********************************************************************
2095 * CreateIconIndirect (USER32.@)
2096 */
2097 HICON WINAPI CreateIconIndirect(PICONINFO iconinfo)
2098 {
2099 DIBSECTION bmpXor;
2100 BITMAP bmpAnd;
2101 HICON16 hObj;
2102 int xor_objsize = 0, sizeXor = 0, sizeAnd, planes, bpp;
2103
2104 TRACE("color %p, mask %p, hotspot %ux%u, fIcon %d\n",
2105 iconinfo->hbmColor, iconinfo->hbmMask,
2106 iconinfo->xHotspot, iconinfo->yHotspot, iconinfo->fIcon);
2107
2108 if (!iconinfo->hbmMask) return 0;
2109
2110 planes = GetDeviceCaps( screen_dc, PLANES );
2111 bpp = GetDeviceCaps( screen_dc, BITSPIXEL );
2112
2113 if (iconinfo->hbmColor)
2114 {
2115 xor_objsize = GetObjectW( iconinfo->hbmColor, sizeof(bmpXor), &bmpXor );
2116 TRACE("color: width %d, height %d, width bytes %d, planes %u, bpp %u\n",
2117 bmpXor.dsBm.bmWidth, bmpXor.dsBm.bmHeight, bmpXor.dsBm.bmWidthBytes,
2118 bmpXor.dsBm.bmPlanes, bmpXor.dsBm.bmBitsPixel);
2119 /* we can use either depth 1 or screen depth for xor bitmap */
2120 if (bmpXor.dsBm.bmPlanes == 1 && bmpXor.dsBm.bmBitsPixel == 1) planes = bpp = 1;
2121 sizeXor = bmpXor.dsBm.bmHeight * planes * get_bitmap_width_bytes( bmpXor.dsBm.bmWidth, bpp );
2122 }
2123 GetObjectW( iconinfo->hbmMask, sizeof(bmpAnd), &bmpAnd );
2124 TRACE("mask: width %d, height %d, width bytes %d, planes %u, bpp %u\n",
2125 bmpAnd.bmWidth, bmpAnd.bmHeight, bmpAnd.bmWidthBytes,
2126 bmpAnd.bmPlanes, bmpAnd.bmBitsPixel);
2127
2128 sizeAnd = bmpAnd.bmHeight * get_bitmap_width_bytes(bmpAnd.bmWidth, 1);
2129
2130 hObj = GlobalAlloc16( GMEM_MOVEABLE,
2131 sizeof(CURSORICONINFO) + sizeXor + sizeAnd );
2132 if (hObj)
2133 {
2134 CURSORICONINFO *info;
2135
2136 info = GlobalLock16( hObj );
2137
2138 /* If we are creating an icon, the hotspot is unused */
2139 if (iconinfo->fIcon)
2140 {
2141 info->ptHotSpot.x = ICON_HOTSPOT;
2142 info->ptHotSpot.y = ICON_HOTSPOT;
2143 }
2144 else
2145 {
2146 info->ptHotSpot.x = iconinfo->xHotspot;
2147 info->ptHotSpot.y = iconinfo->yHotspot;
2148 }
2149
2150 if (iconinfo->hbmColor)
2151 {
2152 info->nWidth = bmpXor.dsBm.bmWidth;
2153 info->nHeight = bmpXor.dsBm.bmHeight;
2154 info->nWidthBytes = bmpXor.dsBm.bmWidthBytes;
2155 info->bPlanes = planes;
2156 info->bBitsPerPixel = bpp;
2157 }
2158 else
2159 {
2160 info->nWidth = bmpAnd.bmWidth;
2161 info->nHeight = bmpAnd.bmHeight / 2;
2162 info->nWidthBytes = get_bitmap_width_bytes(bmpAnd.bmWidth, 1);
2163 info->bPlanes = 1;
2164 info->bBitsPerPixel = 1;
2165 }
2166
2167 /* Transfer the bitmap bits to the CURSORICONINFO structure */
2168
2169 /* Some apps pass a color bitmap as a mask, convert it to b/w */
2170 if (bmpAnd.bmBitsPixel == 1)
2171 {
2172 GetBitmapBits( iconinfo->hbmMask, sizeAnd, info + 1 );
2173 }
2174 else
2175 {
2176 HDC hdc, hdc_mem;
2177 HBITMAP hbmp_old, hbmp_mem_old, hbmp_mono;
2178
2179 hdc = GetDC( 0 );
2180 hdc_mem = CreateCompatibleDC( hdc );
2181
2182 hbmp_mono = CreateBitmap( bmpAnd.bmWidth, bmpAnd.bmHeight, 1, 1, NULL );
2183
2184 hbmp_old = SelectObject( hdc, iconinfo->hbmMask );
2185 hbmp_mem_old = SelectObject( hdc_mem, hbmp_mono );
2186
2187 BitBlt( hdc_mem, 0, 0, bmpAnd.bmWidth, bmpAnd.bmHeight, hdc, 0, 0, SRCCOPY );
2188
2189 SelectObject( hdc, hbmp_old );
2190 SelectObject( hdc_mem, hbmp_mem_old );
2191
2192 DeleteDC( hdc_mem );
2193 ReleaseDC( 0, hdc );
2194
2195 GetBitmapBits( hbmp_mono, sizeAnd, info + 1 );
2196 DeleteObject( hbmp_mono );
2197 }
2198
2199 if (iconinfo->hbmColor)
2200 {
2201 char *dst_bits = (char*)(info + 1) + sizeAnd;
2202
2203 if (bmpXor.dsBm.bmPlanes == planes && bmpXor.dsBm.bmBitsPixel == bpp)
2204 GetBitmapBits( iconinfo->hbmColor, sizeXor, dst_bits );
2205 else
2206 {
2207 BITMAPINFO bminfo;
2208 int dib_width = get_dib_width_bytes( info->nWidth, info->bBitsPerPixel );
2209 int bitmap_width = get_bitmap_width_bytes( info->nWidth, info->bBitsPerPixel );
2210
2211 bminfo.bmiHeader.biSize = sizeof(bminfo);
2212 bminfo.bmiHeader.biWidth = info->nWidth;
2213 bminfo.bmiHeader.biHeight = info->nHeight;
2214 bminfo.bmiHeader.biPlanes = info->bPlanes;
2215 bminfo.bmiHeader.biBitCount = info->bBitsPerPixel;
2216 bminfo.bmiHeader.biCompression = BI_RGB;
2217 bminfo.bmiHeader.biSizeImage = info->nHeight * dib_width;
2218 bminfo.bmiHeader.biXPelsPerMeter = 0;
2219 bminfo.bmiHeader.biYPelsPerMeter = 0;
2220 bminfo.bmiHeader.biClrUsed = 0;
2221 bminfo.bmiHeader.biClrImportant = 0;
2222
2223 /* swap lines for dib sections */
2224 if (xor_objsize == sizeof(DIBSECTION))
2225 bminfo.bmiHeader.biHeight = -bminfo.bmiHeader.biHeight;
2226
2227 if (dib_width != bitmap_width) /* need to fixup alignment */
2228 {
2229 char *src_bits = HeapAlloc( GetProcessHeap(), 0, bminfo.bmiHeader.biSizeImage );
2230
2231 if (src_bits && GetDIBits( screen_dc, iconinfo->hbmColor, 0, info->nHeight,
2232 src_bits, &bminfo, DIB_RGB_COLORS ))
2233 {
2234 int y;
2235 for (y = 0; y < info->nHeight; y++)
2236 memcpy( dst_bits + y * bitmap_width, src_bits + y * dib_width, bitmap_width );
2237 }
2238 HeapFree( GetProcessHeap(), 0, src_bits );
2239 }
2240 else
2241 GetDIBits( screen_dc, iconinfo->hbmColor, 0, info->nHeight,
2242 dst_bits, &bminfo, DIB_RGB_COLORS );
2243 }
2244 }
2245 GlobalUnlock16( hObj );
2246 }
2247 return HICON_32(hObj);
2248 }
2249
2250 /******************************************************************************
2251 * DrawIconEx (USER32.@) Draws an icon or cursor on device context
2252 *
2253 * NOTES
2254 * Why is this using SM_CXICON instead of SM_CXCURSOR?
2255 *
2256 * PARAMS
2257 * hdc [I] Handle to device context
2258 * x0 [I] X coordinate of upper left corner
2259 * y0 [I] Y coordinate of upper left corner
2260 * hIcon [I] Handle to icon to draw
2261 * cxWidth [I] Width of icon
2262 * cyWidth [I] Height of icon
2263 * istep [I] Index of frame in animated cursor
2264 * hbr [I] Handle to background brush
2265 * flags [I] Icon-drawing flags
2266 *
2267 * RETURNS
2268 * Success: TRUE
2269 * Failure: FALSE
2270 */
2271 BOOL WINAPI DrawIconEx( HDC hdc, INT x0, INT y0, HICON hIcon,
2272 INT cxWidth, INT cyWidth, UINT istep,
2273 HBRUSH hbr, UINT flags )
2274 {
2275 CURSORICONINFO *ptr;
2276 HDC hDC_off = 0, hMemDC;
2277 BOOL result = FALSE, DoOffscreen;
2278 HBITMAP hB_off = 0, hOld = 0;
2279 unsigned char *xorBitmapBits;
2280 unsigned int xorLength;
2281 BOOL has_alpha = FALSE;
2282
2283 TRACE_(icon)("(hdc=%p,pos=%d.%d,hicon=%p,extend=%d.%d,istep=%d,br=%p,flags=0x%08x)\n",
2284 hdc,x0,y0,hIcon,cxWidth,cyWidth,istep,hbr,flags );
2285
2286 if (!(ptr = GlobalLock16(HICON_16(hIcon)))) return FALSE;
2287 if (!(hMemDC = CreateCompatibleDC( hdc ))) return FALSE;
2288
2289 if (istep)
2290 FIXME_(icon)("Ignoring istep=%d\n", istep);
2291 if (flags & DI_NOMIRROR)
2292 FIXME_(icon)("Ignoring flag DI_NOMIRROR\n");
2293
2294 xorLength = ptr->nHeight * get_bitmap_width_bytes(
2295 ptr->nWidth, ptr->bBitsPerPixel);
2296 xorBitmapBits = (unsigned char *)(ptr + 1) + ptr->nHeight *
2297 get_bitmap_width_bytes(ptr->nWidth, 1);
2298
2299 if (flags & DI_IMAGE)
2300 has_alpha = bitmap_has_alpha_channel(
2301 ptr->bBitsPerPixel, xorBitmapBits, xorLength);
2302
2303 /* Calculate the size of the destination image. */
2304 if (cxWidth == 0)
2305 {
2306 if (flags & DI_DEFAULTSIZE)
2307 cxWidth = GetSystemMetrics (SM_CXICON);
2308 else
2309 cxWidth = ptr->nWidth;
2310 }
2311 if (cyWidth == 0)
2312 {
2313 if (flags & DI_DEFAULTSIZE)
2314 cyWidth = GetSystemMetrics (SM_CYICON);
2315 else
2316 cyWidth = ptr->nHeight;
2317 }
2318
2319 DoOffscreen = (GetObjectType( hbr ) == OBJ_BRUSH);
2320
2321 if (DoOffscreen) {
2322 RECT r;
2323
2324 r.left = 0;
2325 r.top = 0;
2326 r.right = cxWidth;
2327 r.bottom = cxWidth;
2328
2329 hDC_off = CreateCompatibleDC(hdc);
2330 hB_off = CreateCompatibleBitmap(hdc, cxWidth, cyWidth);
2331 if (hDC_off && hB_off) {
2332 hOld = SelectObject(hDC_off, hB_off);
2333 FillRect(hDC_off, &r, hbr);
2334 }
2335 }
2336
2337 if (hMemDC && (!DoOffscreen || (hDC_off && hB_off)))
2338 {
2339 HBITMAP hBitTemp;
2340 HBITMAP hXorBits = NULL, hAndBits = NULL;
2341 COLORREF oldFg, oldBg;
2342 INT nStretchMode;
2343
2344 nStretchMode = SetStretchBltMode (hdc, STRETCH_DELETESCANS);
2345
2346 oldFg = SetTextColor( hdc, RGB(0,0,0) );
2347 oldBg = SetBkColor( hdc, RGB(255,255,255) );
2348
2349 if (((flags & DI_MASK) && !(flags & DI_IMAGE)) ||
2350 ((flags & DI_MASK) && !has_alpha))
2351 {
2352 hAndBits = CreateBitmap ( ptr->nWidth, ptr->nHeight, 1, 1, ptr + 1 );
2353 if (hAndBits)
2354 {
2355 hBitTemp = SelectObject( hMemDC, hAndBits );
2356 if (DoOffscreen)
2357 StretchBlt (hDC_off, 0, 0, cxWidth, cyWidth,
2358 hMemDC, 0, 0, ptr->nWidth, ptr->nHeight, SRCAND);
2359 else
2360 StretchBlt (hdc, x0, y0, cxWidth, cyWidth,
2361 hMemDC, 0, 0, ptr->nWidth, ptr->nHeight, SRCAND);
2362 SelectObject( hMemDC, hBitTemp );
2363 }
2364 }
2365
2366 if (flags & DI_IMAGE)
2367 {
2368 BITMAPINFOHEADER bmih;
2369 unsigned char *dibBits;
2370
2371 memset(&bmih, 0, sizeof(BITMAPINFOHEADER));
2372 bmih.biSize = sizeof(BITMAPINFOHEADER);
2373 bmih.biWidth = ptr->nWidth;
2374 bmih.biHeight = -ptr->nHeight;
2375 bmih.biPlanes = ptr->bPlanes;
2376 bmih.biBitCount = ptr->bBitsPerPixel;
2377 bmih.biCompression = BI_RGB;
2378
2379 hXorBits = CreateDIBSection(hdc, (BITMAPINFO*)&bmih, DIB_RGB_COLORS,
2380 (void*)&dibBits, NULL, 0);
2381
2382 if (hXorBits && dibBits)
2383 {
2384 if(has_alpha)
2385 {
2386 BLENDFUNCTION pixelblend = { AC_SRC_OVER, 0, 255, AC_SRC_ALPHA };
2387
2388 /* Do the alpha blending render */
2389 premultiply_alpha_channel(dibBits, xorBitmapBits, xorLength);
2390 hBitTemp = SelectObject( hMemDC, hXorBits );
2391
2392 if (DoOffscreen)
2393 GdiAlphaBlend(hDC_off, 0, 0, cxWidth, cyWidth, hMemDC,
2394 0, 0, ptr->nWidth, ptr->nHeight, pixelblend);
2395 else
2396 GdiAlphaBlend(hdc, x0, y0, cxWidth, cyWidth, hMemDC,
2397 0, 0, ptr->nWidth, ptr->nHeight, pixelblend);
2398
2399 SelectObject( hMemDC, hBitTemp );
2400 }
2401 else
2402 {
2403 memcpy(dibBits, xorBitmapBits, xorLength);
2404 hBitTemp = SelectObject( hMemDC, hXorBits );
2405 if (DoOffscreen)
2406 StretchBlt (hDC_off, 0, 0, cxWidth, cyWidth,
2407 hMemDC, 0, 0, ptr->nWidth, ptr->nHeight, SRCPAINT);
2408 else
2409 StretchBlt (hdc, x0, y0, cxWidth, cyWidth,
2410 hMemDC, 0, 0, ptr->nWidth, ptr->nHeight, SRCPAINT);
2411 SelectObject( hMemDC, hBitTemp );
2412 }
2413
2414 DeleteObject( hXorBits );
2415 }
2416 }
2417
2418 result = TRUE;
2419
2420 SetTextColor( hdc, oldFg );
2421 SetBkColor( hdc, oldBg );
2422
2423 if (hAndBits) DeleteObject( hAndBits );
2424 SetStretchBltMode (hdc, nStretchMode);
2425 if (DoOffscreen) {
2426 BitBlt(hdc, x0, y0, cxWidth, cyWidth, hDC_off, 0, 0, SRCCOPY);
2427 SelectObject(hDC_off, hOld);
2428 }
2429 }
2430 if (hMemDC) DeleteDC( hMemDC );
2431 if (hDC_off) DeleteDC(hDC_off);
2432 if (hB_off) DeleteObject(hB_off);
2433 GlobalUnlock16(HICON_16(hIcon));
2434 return result;
2435 }
2436
2437 /***********************************************************************
2438 * DIB_FixColorsToLoadflags
2439 *
2440 * Change color table entries when LR_LOADTRANSPARENT or LR_LOADMAP3DCOLORS
2441 * are in loadflags
2442 */
2443 static void DIB_FixColorsToLoadflags(BITMAPINFO * bmi, UINT loadflags, BYTE pix)
2444 {
2445 int colors;
2446 COLORREF c_W, c_S, c_F, c_L, c_C;
2447 int incr,i;
2448 RGBQUAD *ptr;
2449 int bitmap_type;
2450 LONG width;
2451 LONG height;
2452 WORD bpp;
2453 DWORD compr;
2454
2455 if (((bitmap_type = DIB_GetBitmapInfo((BITMAPINFOHEADER*) bmi, &width, &height, &bpp, &compr)) == -1))
2456 {
2457 WARN_(resource)("Invalid bitmap\n");
2458 return;
2459 }
2460
2461 if (bpp > 8) return;
2462
2463 if (bitmap_type == 0) /* BITMAPCOREHEADER */
2464 {
2465 incr = 3;
2466 colors = 1 << bpp;
2467 }
2468 else
2469 {
2470 incr = 4;
2471 colors = bmi->bmiHeader.biClrUsed;
2472 if (colors > 256) colors = 256;
2473 if (!colors && (bpp <= 8)) colors = 1 << bpp;
2474 }
2475
2476 c_W = GetSysColor(COLOR_WINDOW);
2477 c_S = GetSysColor(COLOR_3DSHADOW);
2478 c_F = GetSysColor(COLOR_3DFACE);
2479 c_L = GetSysColor(COLOR_3DLIGHT);
2480
2481 if (loadflags & LR_LOADTRANSPARENT) {
2482 switch (bpp) {
2483 case 1: pix = pix >> 7; break;
2484 case 4: pix = pix >> 4; break;
2485 case 8: break;
2486 default:
2487 WARN_(resource)("(%d): Unsupported depth\n", bpp);
2488 return;
2489 }
2490 if (pix >= colors) {
2491 WARN_(resource)("pixel has color index greater than biClrUsed!\n");
2492 return;
2493 }
2494 if (loadflags & LR_LOADMAP3DCOLORS) c_W = c_F;
2495 ptr = (RGBQUAD*)((char*)bmi->bmiColors+pix*incr);
2496 ptr->rgbBlue = GetBValue(c_W);
2497 ptr->rgbGreen = GetGValue(c_W);
2498 ptr->rgbRed = GetRValue(c_W);
2499 }
2500 if (loadflags & LR_LOADMAP3DCOLORS)
2501 for (i=0; i<colors; i++) {
2502 ptr = (RGBQUAD*)((char*)bmi->bmiColors+i*incr);
2503 c_C = RGB(ptr->rgbRed, ptr->rgbGreen, ptr->rgbBlue);
2504 if (c_C == RGB(128, 128, 128)) {
2505 ptr->rgbRed = GetRValue(c_S);
2506 ptr->rgbGreen = GetGValue(c_S);
2507 ptr->rgbBlue = GetBValue(c_S);
2508 } else if (c_C == RGB(192, 192, 192)) {
2509 ptr->rgbRed = GetRValue(c_F);
2510 ptr->rgbGreen = GetGValue(c_F);
2511 ptr->rgbBlue = GetBValue(c_F);
2512 } else if (c_C == RGB(223, 223, 223)) {
2513 ptr->rgbRed = GetRValue(c_L);
2514 ptr->rgbGreen = GetGValue(c_L);
2515 ptr->rgbBlue = GetBValue(c_L);
2516 }
2517 }
2518 }
2519
2520
2521 /**********************************************************************
2522 * BITMAP_Load
2523 */
2524 static HBITMAP BITMAP_Load( HINSTANCE instance, LPCWSTR name,
2525 INT desiredx, INT desiredy, UINT loadflags )
2526 {
2527 HBITMAP hbitmap = 0, orig_bm;
2528 HRSRC hRsrc;
2529 HGLOBAL handle;
2530 char *ptr = NULL;
2531 BITMAPINFO *info, *fix_info = NULL, *scaled_info = NULL;
2532 int size;
2533 BYTE pix;
2534 char *bits;
2535 LONG width, height, new_width, new_height;
2536 WORD bpp_dummy;
2537 DWORD compr_dummy;
2538 INT bm_type;
2539 HDC screen_mem_dc = NULL;
2540
2541 if (!(loadflags & LR_LOADFROMFILE))
2542 {
2543 if (!instance)
2544 {
2545 /* OEM bitmap: try to load the resource from user32.dll */
2546 instance = user32_module;
2547 }
2548
2549 if (!(hRsrc = FindResourceW( instance, name, (LPWSTR)RT_BITMAP ))) return 0;
2550 if (!(handle = LoadResource( instance, hRsrc ))) return 0;
2551
2552 if ((info = LockResource( handle )) == NULL) return 0;
2553 }
2554 else
2555 {
2556 BITMAPFILEHEADER * bmfh;
2557
2558 if (!(ptr = map_fileW( name, NULL ))) return 0;
2559 info = (BITMAPINFO *)(ptr + sizeof(BITMAPFILEHEADER));
2560 bmfh = (BITMAPFILEHEADER *)ptr;
2561 if (!( bmfh->bfType == 0x4d42 /* 'BM' */ &&
2562 bmfh->bfReserved1 == 0 &&
2563 bmfh->bfReserved2 == 0))
2564 {
2565 WARN("Invalid/unsupported bitmap format!\n");
2566 UnmapViewOfFile( ptr );
2567 return 0;
2568 }
2569 }
2570
2571 size = bitmap_info_size(info, DIB_RGB_COLORS);
2572 fix_info = HeapAlloc(GetProcessHeap(), 0, size);
2573 scaled_info = HeapAlloc(GetProcessHeap(), 0, size);
2574
2575 if (!fix_info || !scaled_info) goto end;
2576 memcpy(fix_info, info, size);
2577
2578 pix = *((LPBYTE)info + size);
2579 DIB_FixColorsToLoadflags(fix_info, loadflags, pix);
2580
2581 memcpy(scaled_info, fix_info, size);
2582 bm_type = DIB_GetBitmapInfo( &fix_info->bmiHeader, &width, &height,
2583 &bpp_dummy, &compr_dummy);
2584 if(desiredx != 0)
2585 new_width = desiredx;
2586 else
2587 new_width = width;
2588
2589 if(desiredy != 0)
2590 new_height = height > 0 ? desiredy : -desiredy;
2591 else
2592 new_height = height;
2593
2594 if(bm_type == 0)
2595 {
2596 BITMAPCOREHEADER *core = (BITMAPCOREHEADER *)&scaled_info->bmiHeader;
2597 core->bcWidth = new_width;
2598 core->bcHeight = new_height;
2599 }
2600 else
2601 {
2602 scaled_info->bmiHeader.biWidth = new_width;
2603 scaled_info->bmiHeader.biHeight = new_height;
2604 }
2605
2606 if (new_height < 0) new_height = -new_height;
2607
2608 if (!screen_dc) screen_dc = CreateDCW( DISPLAYW, NULL, NULL, NULL );
2609 if (!(screen_mem_dc = CreateCompatibleDC( screen_dc ))) goto end;
2610
2611 bits = (char *)info + size;
2612
2613 if (loadflags & LR_CREATEDIBSECTION)
2614 {
2615 scaled_info->bmiHeader.biCompression = 0; /* DIBSection can't be compressed */
2616 hbitmap = CreateDIBSection(screen_dc, scaled_info, DIB_RGB_COLORS, NULL, 0, 0);
2617 }
2618 else
2619 {
2620 if (is_dib_monochrome(fix_info))
2621 hbitmap = CreateBitmap(new_width, new_height, 1, 1, NULL);
2622 else
2623 hbitmap = CreateCompatibleBitmap(screen_dc, new_width, new_height);
2624 }
2625
2626 orig_bm = SelectObject(screen_mem_dc, hbitmap);
2627 StretchDIBits(screen_mem_dc, 0, 0, new_width, new_height, 0, 0, width, height, bits, fix_info, DIB_RGB_COLORS, SRCCOPY);
2628 SelectObject(screen_mem_dc, orig_bm);
2629
2630 end:
2631 if (screen_mem_dc) DeleteDC(screen_mem_dc);
2632 HeapFree(GetProcessHeap(), 0, scaled_info);
2633 HeapFree(GetProcessHeap(), 0, fix_info);
2634 if (loadflags & LR_LOADFROMFILE) UnmapViewOfFile( ptr );
2635
2636 return hbitmap;
2637 }
2638
2639 /**********************************************************************
2640 * LoadImageA (USER32.@)
2641 *
2642 * See LoadImageW.
2643 */
2644 HANDLE WINAPI LoadImageA( HINSTANCE hinst, LPCSTR name, UINT type,
2645 INT desiredx, INT desiredy, UINT loadflags)
2646 {
2647 HANDLE res;
2648 LPWSTR u_name;
2649
2650 if (!HIWORD(name))
2651 return LoadImageW(hinst, (LPCWSTR)name, type, desiredx, desiredy, loadflags);
2652
2653 __TRY {
2654 DWORD len = MultiByteToWideChar( CP_ACP, 0, name, -1, NULL, 0 );
2655 u_name = HeapAlloc( GetProcessHeap(), 0, len * sizeof(WCHAR) );
2656 MultiByteToWideChar( CP_ACP, 0, name, -1, u_name, len );
2657 }
2658 __EXCEPT_PAGE_FAULT {
2659 SetLastError( ERROR_INVALID_PARAMETER );
2660 return 0;
2661 }
2662 __ENDTRY
2663 res = LoadImageW(hinst, u_name, type, desiredx, desiredy, loadflags);
2664 HeapFree(GetProcessHeap(), 0, u_name);
2665 return res;
2666 }
2667
2668
2669 /******************************************************************************
2670 * LoadImageW (USER32.@) Loads an icon, cursor, or bitmap
2671 *
2672 * PARAMS
2673 * hinst [I] Handle of instance that contains image
2674 * name [I] Name of image
2675 * type [I] Type of image
2676 * desiredx [I] Desired width
2677 * desiredy [I] Desired height
2678 * loadflags [I] Load flags
2679 *
2680 * RETURNS
2681 * Success: Handle to newly loaded image
2682 * Failure: NULL
2683 *
2684 * FIXME: Implementation lacks some features, see LR_ defines in winuser.h
2685 */
2686 HANDLE WINAPI LoadImageW( HINSTANCE hinst, LPCWSTR name, UINT type,
2687 INT desiredx, INT desiredy, UINT loadflags )
2688 {
2689 TRACE_(resource)("(%p,%s,%d,%d,%d,0x%08x)\n",
2690 hinst,debugstr_w(name),type,desiredx,desiredy,loadflags);
2691
2692 if (loadflags & LR_DEFAULTSIZE) {
2693 if (type == IMAGE_ICON) {
2694 if (!desiredx) desiredx = GetSystemMetrics(SM_CXICON);
2695 if (!desiredy) desiredy = GetSystemMetrics(SM_CYICON);
2696 } else if (type == IMAGE_CURSOR) {
2697 if (!desiredx) desiredx = GetSystemMetrics(SM_CXCURSOR);
2698 if (!desiredy) desiredy = GetSystemMetrics(SM_CYCURSOR);
2699 }
2700 }
2701 if (loadflags & LR_LOADFROMFILE) loadflags &= ~LR_SHARED;
2702 switch (type) {
2703 case IMAGE_BITMAP:
2704 return BITMAP_Load( hinst, name, desiredx, desiredy, loadflags );
2705
2706 case IMAGE_ICON:
2707 if (!screen_dc) screen_dc = CreateDCW( DISPLAYW, NULL, NULL, NULL );
2708 if (screen_dc)
2709 {
2710 UINT palEnts = GetSystemPaletteEntries(screen_dc, 0, 0, NULL);
2711 if (palEnts == 0) palEnts = 256;
2712 return CURSORICON_Load(hinst, name, desiredx, desiredy,
2713 palEnts, FALSE, loadflags);
2714 }
2715 break;
2716
2717 case IMAGE_CURSOR:
2718 return CURSORICON_Load(hinst, name, desiredx, desiredy,
2719 1, TRUE, loadflags);
2720 }
2721 return 0;
2722 }
2723
2724 /******************************************************************************
2725 * CopyImage (USER32.@) Creates new image and copies attributes to it
2726 *
2727 * PARAMS
2728 * hnd [I] Handle to image to copy
2729 * type [I] Type of image to copy
2730 * desiredx [I] Desired width of new image
2731 * desiredy [I] Desired height of new image
2732 * flags [I] Copy flags
2733 *
2734 * RETURNS
2735 * Success: Handle to newly created image
2736 * Failure: NULL
2737 *
2738 * BUGS
2739 * Only Windows NT 4.0 supports the LR_COPYRETURNORG flag for bitmaps,
2740 * all other versions (95/2000/XP have been tested) ignore it.
2741 *
2742 * NOTES
2743 * If LR_CREATEDIBSECTION is absent, the copy will be monochrome for
2744 * a monochrome source bitmap or if LR_MONOCHROME is present, otherwise
2745 * the copy will have the same depth as the screen.
2746 * The content of the image will only be copied if the bit depth of the
2747 * original image is compatible with the bit depth of the screen, or
2748 * if the source is a DIB section.
2749 * The LR_MONOCHROME flag is ignored if LR_CREATEDIBSECTION is present.
2750 */
2751 HANDLE WINAPI CopyImage( HANDLE hnd, UINT type, INT desiredx,
2752 INT desiredy, UINT flags )
2753 {
2754 TRACE("hnd=%p, type=%u, desiredx=%d, desiredy=%d, flags=%x\n",
2755 hnd, type, desiredx, desiredy, flags);
2756
2757 switch (type)
2758 {
2759 case IMAGE_BITMAP:
2760 {
2761 HBITMAP res = NULL;
2762 DIBSECTION ds;
2763 int objSize;
2764 BITMAPINFO * bi;
2765
2766 objSize = GetObjectW( hnd, sizeof(ds), &ds );
2767 if (!objSize) return 0;
2768 if ((desiredx < 0) || (desiredy < 0)) return 0;
2769
2770 if (flags & LR_COPYFROMRESOURCE)
2771 {
2772 FIXME("The flag LR_COPYFROMRESOURCE is not implemented for bitmaps\n");
2773 }
2774
2775 if (desiredx == 0) desiredx = ds.dsBm.bmWidth;
2776 if (desiredy == 0) desiredy = ds.dsBm.bmHeight;
2777
2778 /* Allocate memory for a BITMAPINFOHEADER structure and a
2779 color table. The maximum number of colors in a color table
2780 is 256 which corresponds to a bitmap with depth 8.
2781 Bitmaps with higher depths don't have color tables. */
2782 bi = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(BITMAPINFOHEADER) + 256 * sizeof(RGBQUAD));
2783 if (!bi) return 0;
2784
2785 bi->bmiHeader.biSize = sizeof(bi->bmiHeader);
2786 bi->bmiHeader.biPlanes = ds.dsBm.bmPlanes;
2787 bi->bmiHeader.biBitCount = ds.dsBm.bmBitsPixel;
2788 bi->bmiHeader.biCompression = BI_RGB;
2789
2790 if (flags & LR_CREATEDIBSECTION)
2791 {
2792 /* Create a DIB section. LR_MONOCHROME is ignored */
2793 void * bits;
2794 HDC dc = CreateCompatibleDC(NULL);
2795
2796 if (objSize == sizeof(DIBSECTION))
2797 {
2798 /* The source bitmap is a DIB.
2799 Get its attributes to create an exact copy */
2800 memcpy(bi, &ds.dsBmih, sizeof(BITMAPINFOHEADER));
2801 }
2802
2803 /* Get the color table or the color masks */
2804 GetDIBits(dc, hnd, 0, ds.dsBm.bmHeight, NULL, bi, DIB_RGB_COLORS);
2805
2806 bi->bmiHeader.biWidth = desiredx;
2807 bi->bmiHeader.biHeight = desiredy;
2808 bi->bmiHeader.biSizeImage = 0;
2809
2810 res = CreateDIBSection(dc, bi, DIB_RGB_COLORS, &bits, NULL, 0);
2811 DeleteDC(dc);
2812 }
2813 else
2814 {
2815 /* Create a device-dependent bitmap */
2816
2817 BOOL monochrome = (flags & LR_MONOCHROME);
2818
2819 if (objSize == sizeof(DIBSECTION))
2820 {
2821 /* The source bitmap is a DIB section.
2822 Get its attributes */
2823 HDC dc = CreateCompatibleDC(NULL);
2824 bi->bmiHeader.biSize = sizeof(bi->bmiHeader);
2825 bi->bmiHeader.biBitCount = ds.dsBm.bmBitsPixel;
2826 GetDIBits(dc, hnd, 0, ds.dsBm.bmHeight, NULL, bi, DIB_RGB_COLORS);
2827 DeleteDC(dc);
2828
2829 if (!monochrome && ds.dsBm.bmBitsPixel == 1)
2830 {
2831 /* Look if the colors of the DIB are black and white */
2832
2833 monochrome =
2834 (bi->bmiColors[0].rgbRed == 0xff
2835 && bi->bmiColors[0].rgbGreen == 0xff
2836 && bi->bmiColors[0].rgbBlue == 0xff
2837 && bi->bmiColors[0].rgbReserved == 0
2838 && bi->bmiColors[1].rgbRed == 0
2839 && bi->bmiColors[1].rgbGreen == 0
2840 && bi->bmiColors[1].rgbBlue == 0
2841 && bi->bmiColors[1].rgbReserved == 0)
2842 ||
2843 (bi->bmiColors[0].rgbRed == 0
2844 && bi->bmiColors[0].rgbGreen == 0
2845 && bi->bmiColors[0].rgbBlue == 0
2846 && bi->bmiColors[0].rgbReserved == 0
2847 && bi->bmiColors[1].rgbRed == 0xff
2848 && bi->bmiColors[1].rgbGreen == 0xff
2849 && bi->bmiColors[1].rgbBlue == 0xff
2850 && bi->bmiColors[1].rgbReserved == 0);
2851 }
2852 }
2853 else if (!monochrome)
2854 {
2855 monochrome = ds.dsBm.bmBitsPixel == 1;
2856 }
2857
2858 if (monochrome)
2859 {
2860 res = CreateBitmap(desiredx, desiredy, 1, 1, NULL);
2861 }
2862 else
2863 {
2864 HDC screenDC = GetDC(NULL);
2865 res = CreateCompatibleBitmap(screenDC, desiredx, desiredy);
2866 ReleaseDC(NULL, screenDC);
2867 }
2868 }
2869
2870 if (res)
2871 {
2872 /* Only copy the bitmap if it's a DIB section or if it's
2873 compatible to the screen */
2874 BOOL copyContents;
2875
2876 if (objSize == sizeof(DIBSECTION))
2877 {
2878 copyContents = TRUE;
2879 }
2880 else
2881 {
2882 HDC screenDC = GetDC(NULL);
2883 int screen_depth = GetDeviceCaps(screenDC, BITSPIXEL);
2884 ReleaseDC(NULL, screenDC);
2885
2886 copyContents = (ds.dsBm.bmBitsPixel == 1 || ds.dsBm.bmBitsPixel == screen_depth);
2887 }
2888
2889 if (copyContents)
2890 {
2891 /* The source bitmap may already be selected in a device context,
2892 use GetDIBits/StretchDIBits and not StretchBlt */
2893
2894 HDC dc;
2895 void * bits;
2896
2897 dc = CreateCompatibleDC(NULL);
2898
2899 bi->bmiHeader.biWidth = ds.dsBm.bmWidth;
2900 bi->bmiHeader.biHeight = ds.dsBm.bmHeight;
2901 bi->bmiHeader.biSizeImage = 0;
2902 bi->bmiHeader.biClrUsed = 0;
2903 bi->bmiHeader.biClrImportant = 0;
2904
2905 /* Fill in biSizeImage */
2906 GetDIBits(dc, hnd, 0, ds.dsBm.bmHeight, NULL, bi, DIB_RGB_COLORS);
2907 bits = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, bi->bmiHeader.biSizeImage);
2908
2909 if (bits)
2910 {
2911 HBITMAP oldBmp;
2912
2913 /* Get the image bits of the source bitmap */
2914 GetDIBits(dc, hnd, 0, ds.dsBm.bmHeight, bits, bi, DIB_RGB_COLORS);
2915
2916 /* Copy it to the destination bitmap */
2917 oldBmp = SelectObject(dc, res);
2918 StretchDIBits(dc, 0, 0, desiredx, desiredy,
2919 0, 0, ds.dsBm.bmWidth, ds.dsBm.bmHeight,
2920 bits, bi, DIB_RGB_COLORS, SRCCOPY);
2921 SelectObject(dc, oldBmp);
2922
2923 HeapFree(GetProcessHeap(), 0, bits);
2924 }
2925
2926 DeleteDC(dc);
2927 }
2928
2929 if (flags & LR_COPYDELETEORG)
2930 {
2931 DeleteObject(hnd);
2932 }
2933 }
2934 HeapFree(GetProcessHeap(), 0, bi);
2935 return res;
2936 }
2937 case IMAGE_ICON:
2938 return CURSORICON_ExtCopy(hnd,type, desiredx, desiredy, flags);
2939 case IMAGE_CURSOR:
2940 /* Should call CURSORICON_ExtCopy but more testing
2941 * needs to be done before we change this
2942 */
2943 if (flags) FIXME("Flags are ignored\n");
2944 return CopyCursor(hnd);
2945 }
2946 return 0;
2947 }
2948
2949
2950 /******************************************************************************
2951 * LoadBitmapW (USER32.@) Loads bitmap from the executable file
2952 *
2953 * RETURNS
2954 * Success: Handle to specified bitmap
2955 * Failure: NULL
2956 */
2957 HBITMAP WINAPI LoadBitmapW(
2958 HINSTANCE instance, /* [in] Handle to application instance */
2959 LPCWSTR name) /* [in] Address of bitmap resource name */
2960 {
2961 return LoadImageW( instance, name, IMAGE_BITMAP, 0, 0, 0 );
2962 }
2963
2964 /**********************************************************************
2965 * LoadBitmapA (USER32.@)
2966 *
2967 * See LoadBitmapW.
2968 */
2969 HBITMAP WINAPI LoadBitmapA( HINSTANCE instance, LPCSTR name )
2970 {
2971 return LoadImageA( instance, name, IMAGE_BITMAP, 0, 0, 0 );
2972 }
useful hacks and other patches not (yet) suitable for mainline