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Release 1.1.37.
[wine/gsoc-2012-control.git] / dlls / user32 / cursoricon.c
blob9a36499ba2290a66284b14e16e7b3d653e4b9253
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 "controls.h"
59 #include "user_private.h"
60
61 WINE_DEFAULT_DEBUG_CHANNEL(cursor);
62 WINE_DECLARE_DEBUG_CHANNEL(icon);
63 WINE_DECLARE_DEBUG_CHANNEL(resource);
64
65 #include "pshpack1.h"
66
67 typedef struct {
68 BYTE bWidth;
69 BYTE bHeight;
70 BYTE bColorCount;
71 BYTE bReserved;
72 WORD xHotspot;
73 WORD yHotspot;
74 DWORD dwDIBSize;
75 DWORD dwDIBOffset;
76 } CURSORICONFILEDIRENTRY;
77
78 typedef struct
79 {
80 WORD idReserved;
81 WORD idType;
82 WORD idCount;
83 CURSORICONFILEDIRENTRY idEntries[1];
84 } CURSORICONFILEDIR;
85
86 #include "poppack.h"
87
88 static RECT CURSOR_ClipRect; /* Cursor clipping rect */
89
90 static HDC screen_dc;
91
92 static const WCHAR DISPLAYW[] = {'D','I','S','P','L','A','Y',0};
93
94
95 /**********************************************************************
96 * ICONCACHE for cursors/icons loaded with LR_SHARED.
97 *
98 * FIXME: This should not be allocated on the system heap, but on a
99 * subsystem-global heap (i.e. one for all Win16 processes,
100 * and one for each Win32 process).
101 */
102 typedef struct tagICONCACHE
103 {
104 struct tagICONCACHE *next;
105
106 HMODULE hModule;
107 HRSRC hRsrc;
108 HRSRC hGroupRsrc;
109 HICON hIcon;
110
111 INT count;
112
113 } ICONCACHE;
114
115 static ICONCACHE *IconAnchor = NULL;
116
117 static CRITICAL_SECTION IconCrst;
118 static CRITICAL_SECTION_DEBUG critsect_debug =
119 {
120 0, 0, &IconCrst,
121 { &critsect_debug.ProcessLocksList, &critsect_debug.ProcessLocksList },
122 0, 0, { (DWORD_PTR)(__FILE__ ": IconCrst") }
123 };
124 static CRITICAL_SECTION IconCrst = { &critsect_debug, -1, 0, 0, 0, 0 };
125
126 static const WORD ICON_HOTSPOT = 0x4242;
127
128
129 /***********************************************************************
130 * map_fileW
131 *
132 * Helper function to map a file to memory:
133 * name - file name
134 * [RETURN] ptr - pointer to mapped file
135 * [RETURN] filesize - pointer size of file to be stored if not NULL
136 */
137 static void *map_fileW( LPCWSTR name, LPDWORD filesize )
138 {
139 HANDLE hFile, hMapping;
140 LPVOID ptr = NULL;
141
142 hFile = CreateFileW( name, GENERIC_READ, FILE_SHARE_READ, NULL,
143 OPEN_EXISTING, FILE_FLAG_RANDOM_ACCESS, 0 );
144 if (hFile != INVALID_HANDLE_VALUE)
145 {
146 hMapping = CreateFileMappingW( hFile, NULL, PAGE_READONLY, 0, 0, NULL );
147 if (hMapping)
148 {
149 ptr = MapViewOfFile( hMapping, FILE_MAP_READ, 0, 0, 0 );
150 CloseHandle( hMapping );
151 if (filesize)
152 *filesize = GetFileSize( hFile, NULL );
153 }
154 CloseHandle( hFile );
155 }
156 return ptr;
157 }
158
159
160 /***********************************************************************
161 * get_bitmap_width_bytes
162 *
163 * Return number of bytes taken by a scanline of 16-bit aligned Windows DDB
164 * data.
165 */
166 static int get_bitmap_width_bytes( int width, int bpp )
167 {
168 switch(bpp)
169 {
170 case 1:
171 return 2 * ((width+15) / 16);
172 case 4:
173 return 2 * ((width+3) / 4);
174 case 24:
175 width *= 3;
176 /* fall through */
177 case 8:
178 return width + (width & 1);
179 case 16:
180 case 15:
181 return width * 2;
182 case 32:
183 return width * 4;
184 default:
185 WARN("Unknown depth %d, please report.\n", bpp );
186 }
187 return -1;
188 }
189
190
191 /***********************************************************************
192 * get_dib_width_bytes
193 *
194 * Return the width of a DIB bitmap in bytes. DIB bitmap data is 32-bit aligned.
195 */
196 static int get_dib_width_bytes( int width, int depth )
197 {
198 int words;
199
200 switch(depth)
201 {
202 case 1: words = (width + 31) / 32; break;
203 case 4: words = (width + 7) / 8; break;
204 case 8: words = (width + 3) / 4; break;
205 case 15:
206 case 16: words = (width + 1) / 2; break;
207 case 24: words = (width * 3 + 3)/4; break;
208 default:
209 WARN("(%d): Unsupported depth\n", depth );
210 /* fall through */
211 case 32:
212 words = width;
213 }
214 return 4 * words;
215 }
216
217
218 /***********************************************************************
219 * bitmap_info_size
220 *
221 * Return the size of the bitmap info structure including color table.
222 */
223 static int bitmap_info_size( const BITMAPINFO * info, WORD coloruse )
224 {
225 int colors, masks = 0;
226
227 if (info->bmiHeader.biSize == sizeof(BITMAPCOREHEADER))
228 {
229 const BITMAPCOREHEADER *core = (const BITMAPCOREHEADER *)info;
230 colors = (core->bcBitCount <= 8) ? 1 << core->bcBitCount : 0;
231 return sizeof(BITMAPCOREHEADER) + colors *
232 ((coloruse == DIB_RGB_COLORS) ? sizeof(RGBTRIPLE) : sizeof(WORD));
233 }
234 else /* assume BITMAPINFOHEADER */
235 {
236 colors = info->bmiHeader.biClrUsed;
237 if (colors > 256) /* buffer overflow otherwise */
238 colors = 256;
239 if (!colors && (info->bmiHeader.biBitCount <= 8))
240 colors = 1 << info->bmiHeader.biBitCount;
241 if (info->bmiHeader.biCompression == BI_BITFIELDS) masks = 3;
242 return sizeof(BITMAPINFOHEADER) + masks * sizeof(DWORD) + colors *
243 ((coloruse == DIB_RGB_COLORS) ? sizeof(RGBQUAD) : sizeof(WORD));
244 }
245 }
246
247
248 /***********************************************************************
249 * is_dib_monochrome
250 *
251 * Returns whether a DIB can be converted to a monochrome DDB.
252 *
253 * A DIB can be converted if its color table contains only black and
254 * white. Black must be the first color in the color table.
255 *
256 * Note : If the first color in the color table is white followed by
257 * black, we can't convert it to a monochrome DDB with
258 * SetDIBits, because black and white would be inverted.
259 */
260 static BOOL is_dib_monochrome( const BITMAPINFO* info )
261 {
262 if (info->bmiHeader.biBitCount != 1) return FALSE;
263
264 if (info->bmiHeader.biSize == sizeof(BITMAPCOREHEADER))
265 {
266 const RGBTRIPLE *rgb = ((const BITMAPCOREINFO*)info)->bmciColors;
267
268 /* Check if the first color is black */
269 if ((rgb->rgbtRed == 0) && (rgb->rgbtGreen == 0) && (rgb->rgbtBlue == 0))
270 {
271 rgb++;
272
273 /* Check if the second color is white */
274 return ((rgb->rgbtRed == 0xff) && (rgb->rgbtGreen == 0xff)
275 && (rgb->rgbtBlue == 0xff));
276 }
277 else return FALSE;
278 }
279 else /* assume BITMAPINFOHEADER */
280 {
281 const RGBQUAD *rgb = info->bmiColors;
282
283 /* Check if the first color is black */
284 if ((rgb->rgbRed == 0) && (rgb->rgbGreen == 0) &&
285 (rgb->rgbBlue == 0) && (rgb->rgbReserved == 0))
286 {
287 rgb++;
288
289 /* Check if the second color is white */
290 return ((rgb->rgbRed == 0xff) && (rgb->rgbGreen == 0xff)
291 && (rgb->rgbBlue == 0xff) && (rgb->rgbReserved == 0));
292 }
293 else return FALSE;
294 }
295 }
296
297 /***********************************************************************
298 * DIB_GetBitmapInfo
299 *
300 * Get the info from a bitmap header.
301 * Return 1 for INFOHEADER, 0 for COREHEADER,
302 * 4 for V4HEADER, 5 for V5HEADER, -1 for error.
303 */
304 static int DIB_GetBitmapInfo( const BITMAPINFOHEADER *header, LONG *width,
305 LONG *height, WORD *bpp, DWORD *compr )
306 {
307 if (header->biSize == sizeof(BITMAPINFOHEADER))
308 {
309 *width = header->biWidth;
310 *height = header->biHeight;
311 *bpp = header->biBitCount;
312 *compr = header->biCompression;
313 return 1;
314 }
315 if (header->biSize == sizeof(BITMAPCOREHEADER))
316 {
317 const BITMAPCOREHEADER *core = (const BITMAPCOREHEADER *)header;
318 *width = core->bcWidth;
319 *height = core->bcHeight;
320 *bpp = core->bcBitCount;
321 *compr = 0;
322 return 0;
323 }
324 if (header->biSize == sizeof(BITMAPV4HEADER))
325 {
326 const BITMAPV4HEADER *v4hdr = (const BITMAPV4HEADER *)header;
327 *width = v4hdr->bV4Width;
328 *height = v4hdr->bV4Height;
329 *bpp = v4hdr->bV4BitCount;
330 *compr = v4hdr->bV4V4Compression;
331 return 4;
332 }
333 if (header->biSize == sizeof(BITMAPV5HEADER))
334 {
335 const BITMAPV5HEADER *v5hdr = (const BITMAPV5HEADER *)header;
336 *width = v5hdr->bV5Width;
337 *height = v5hdr->bV5Height;
338 *bpp = v5hdr->bV5BitCount;
339 *compr = v5hdr->bV5Compression;
340 return 5;
341 }
342 ERR("(%d): unknown/wrong size for header\n", header->biSize );
343 return -1;
344 }
345
346 /**********************************************************************
347 * CURSORICON_FindSharedIcon
348 */
349 static HICON CURSORICON_FindSharedIcon( HMODULE hModule, HRSRC hRsrc )
350 {
351 HICON hIcon = 0;
352 ICONCACHE *ptr;
353
354 EnterCriticalSection( &IconCrst );
355
356 for ( ptr = IconAnchor; ptr; ptr = ptr->next )
357 if ( ptr->hModule == hModule && ptr->hRsrc == hRsrc )
358 {
359 ptr->count++;
360 hIcon = ptr->hIcon;
361 break;
362 }
363
364 LeaveCriticalSection( &IconCrst );
365
366 return hIcon;
367 }
368
369 /*************************************************************************
370 * CURSORICON_FindCache
371 *
372 * Given a handle, find the corresponding cache element
373 *
374 * PARAMS
375 * Handle [I] handle to an Image
376 *
377 * RETURNS
378 * Success: The cache entry
379 * Failure: NULL
380 *
381 */
382 static ICONCACHE* CURSORICON_FindCache(HICON hIcon)
383 {
384 ICONCACHE *ptr;
385 ICONCACHE *pRet=NULL;
386 BOOL IsFound = FALSE;
387
388 EnterCriticalSection( &IconCrst );
389
390 for (ptr = IconAnchor; ptr != NULL && !IsFound; ptr = ptr->next)
391 {
392 if ( hIcon == ptr->hIcon )
393 {
394 IsFound = TRUE;
395 pRet = ptr;
396 }
397 }
398
399 LeaveCriticalSection( &IconCrst );
400
401 return pRet;
402 }
403
404 /**********************************************************************
405 * CURSORICON_AddSharedIcon
406 */
407 static void CURSORICON_AddSharedIcon( HMODULE hModule, HRSRC hRsrc, HRSRC hGroupRsrc, HICON hIcon )
408 {
409 ICONCACHE *ptr = HeapAlloc( GetProcessHeap(), 0, sizeof(ICONCACHE) );
410 if ( !ptr ) return;
411
412 ptr->hModule = hModule;
413 ptr->hRsrc = hRsrc;
414 ptr->hIcon = hIcon;
415 ptr->hGroupRsrc = hGroupRsrc;
416 ptr->count = 1;
417
418 EnterCriticalSection( &IconCrst );
419 ptr->next = IconAnchor;
420 IconAnchor = ptr;
421 LeaveCriticalSection( &IconCrst );
422 }
423
424 /**********************************************************************
425 * CURSORICON_DelSharedIcon
426 */
427 static INT CURSORICON_DelSharedIcon( HICON hIcon )
428 {
429 INT count = -1;
430 ICONCACHE *ptr;
431
432 EnterCriticalSection( &IconCrst );
433
434 for ( ptr = IconAnchor; ptr; ptr = ptr->next )
435 if ( ptr->hIcon == hIcon )
436 {
437 if ( ptr->count > 0 ) ptr->count--;
438 count = ptr->count;
439 break;
440 }
441
442 LeaveCriticalSection( &IconCrst );
443
444 return count;
445 }
446
447 /**********************************************************************
448 * get_icon_size
449 */
450 BOOL get_icon_size( HICON handle, SIZE *size )
451 {
452 CURSORICONINFO *info;
453
454 if (!(info = wow_handlers.get_icon_ptr( handle ))) return FALSE;
455 size->cx = info->nWidth;
456 size->cy = info->nHeight;
457 wow_handlers.release_icon_ptr( handle, info );
458 return TRUE;
459 }
460
461 /*
462 * The following macro functions account for the irregularities of
463 * accessing cursor and icon resources in files and resource entries.
464 */
465 typedef BOOL (*fnGetCIEntry)( LPVOID dir, int n,
466 int *width, int *height, int *bits );
467
468 /**********************************************************************
469 * CURSORICON_FindBestIcon
470 *
471 * Find the icon closest to the requested size and bit depth.
472 */
473 static int CURSORICON_FindBestIcon( LPVOID dir, fnGetCIEntry get_entry,
474 int width, int height, int depth )
475 {
476 int i, cx, cy, bits, bestEntry = -1;
477 UINT iTotalDiff, iXDiff=0, iYDiff=0, iColorDiff;
478 UINT iTempXDiff, iTempYDiff, iTempColorDiff;
479
480 /* Find Best Fit */
481 iTotalDiff = 0xFFFFFFFF;
482 iColorDiff = 0xFFFFFFFF;
483 for ( i = 0; get_entry( dir, i, &cx, &cy, &bits ); i++ )
484 {
485 iTempXDiff = abs(width - cx);
486 iTempYDiff = abs(height - cy);
487
488 if(iTotalDiff > (iTempXDiff + iTempYDiff))
489 {
490 iXDiff = iTempXDiff;
491 iYDiff = iTempYDiff;
492 iTotalDiff = iXDiff + iYDiff;
493 }
494 }
495
496 /* Find Best Colors for Best Fit */
497 for ( i = 0; get_entry( dir, i, &cx, &cy, &bits ); i++ )
498 {
499 if(abs(width - cx) == iXDiff && abs(height - cy) == iYDiff)
500 {
501 iTempColorDiff = abs(depth - bits);
502 if(iColorDiff > iTempColorDiff)
503 {
504 bestEntry = i;
505 iColorDiff = iTempColorDiff;
506 }
507 }
508 }
509
510 return bestEntry;
511 }
512
513 static BOOL CURSORICON_GetResIconEntry( LPVOID dir, int n,
514 int *width, int *height, int *bits )
515 {
516 CURSORICONDIR *resdir = dir;
517 ICONRESDIR *icon;
518
519 if ( resdir->idCount <= n )
520 return FALSE;
521 icon = &resdir->idEntries[n].ResInfo.icon;
522 *width = icon->bWidth;
523 *height = icon->bHeight;
524 *bits = resdir->idEntries[n].wBitCount;
525 return TRUE;
526 }
527
528 /**********************************************************************
529 * CURSORICON_FindBestCursor
530 *
531 * Find the cursor closest to the requested size.
532 *
533 * FIXME: parameter 'color' ignored.
534 */
535 static int CURSORICON_FindBestCursor( LPVOID dir, fnGetCIEntry get_entry,
536 int width, int height, int depth )
537 {
538 int i, maxwidth, maxheight, cx, cy, bits, bestEntry = -1;
539
540 /* Double height to account for AND and XOR masks */
541
542 height *= 2;
543
544 /* First find the largest one smaller than or equal to the requested size*/
545
546 maxwidth = maxheight = 0;
547 for ( i = 0; get_entry( dir, i, &cx, &cy, &bits ); i++ )
548 {
549 if ((cx <= width) && (cy <= height) &&
550 (cx > maxwidth) && (cy > maxheight))
551 {
552 bestEntry = i;
553 maxwidth = cx;
554 maxheight = cy;
555 }
556 }
557 if (bestEntry != -1) return bestEntry;
558
559 /* Now find the smallest one larger than the requested size */
560
561 maxwidth = maxheight = 255;
562 for ( i = 0; get_entry( dir, i, &cx, &cy, &bits ); i++ )
563 {
564 if (((cx < maxwidth) && (cy < maxheight)) || (bestEntry == -1))
565 {
566 bestEntry = i;
567 maxwidth = cx;
568 maxheight = cy;
569 }
570 }
571
572 return bestEntry;
573 }
574
575 static BOOL CURSORICON_GetResCursorEntry( LPVOID dir, int n,
576 int *width, int *height, int *bits )
577 {
578 CURSORICONDIR *resdir = dir;
579 CURSORDIR *cursor;
580
581 if ( resdir->idCount <= n )
582 return FALSE;
583 cursor = &resdir->idEntries[n].ResInfo.cursor;
584 *width = cursor->wWidth;
585 *height = cursor->wHeight;
586 *bits = resdir->idEntries[n].wBitCount;
587 return TRUE;
588 }
589
590 static CURSORICONDIRENTRY *CURSORICON_FindBestIconRes( CURSORICONDIR * dir,
591 int width, int height, int depth )
592 {
593 int n;
594
595 n = CURSORICON_FindBestIcon( dir, CURSORICON_GetResIconEntry,
596 width, height, depth );
597 if ( n < 0 )
598 return NULL;
599 return &dir->idEntries[n];
600 }
601
602 static CURSORICONDIRENTRY *CURSORICON_FindBestCursorRes( CURSORICONDIR *dir,
603 int width, int height, int depth )
604 {
605 int n = CURSORICON_FindBestCursor( dir, CURSORICON_GetResCursorEntry,
606 width, height, depth );
607 if ( n < 0 )
608 return NULL;
609 return &dir->idEntries[n];
610 }
611
612 static BOOL CURSORICON_GetFileEntry( LPVOID dir, int n,
613 int *width, int *height, int *bits )
614 {
615 CURSORICONFILEDIR *filedir = dir;
616 CURSORICONFILEDIRENTRY *entry;
617
618 if ( filedir->idCount <= n )
619 return FALSE;
620 entry = &filedir->idEntries[n];
621 *width = entry->bWidth;
622 *height = entry->bHeight;
623 *bits = entry->bColorCount;
624 return TRUE;
625 }
626
627 static CURSORICONFILEDIRENTRY *CURSORICON_FindBestCursorFile( CURSORICONFILEDIR *dir,
628 int width, int height, int depth )
629 {
630 int n = CURSORICON_FindBestCursor( dir, CURSORICON_GetFileEntry,
631 width, height, depth );
632 if ( n < 0 )
633 return NULL;
634 return &dir->idEntries[n];
635 }
636
637 static CURSORICONFILEDIRENTRY *CURSORICON_FindBestIconFile( CURSORICONFILEDIR *dir,
638 int width, int height, int depth )
639 {
640 int n = CURSORICON_FindBestIcon( dir, CURSORICON_GetFileEntry,
641 width, height, depth );
642 if ( n < 0 )
643 return NULL;
644 return &dir->idEntries[n];
645 }
646
647 /***********************************************************************
648 * stretch_blt_icon
649 *
650 * A helper function that stretches a bitmap buffer into an HBITMAP.
651 *
652 * PARAMS
653 * hDest [I] The handle of the destination bitmap.
654 * pDestInfo [I] The BITMAPINFO of the destination bitmap.
655 * pSrcInfo [I] The BITMAPINFO of the source bitmap.
656 * pSrcBits [I] A pointer to the source bitmap buffer.
657 **/
658 static BOOL stretch_blt_icon(HBITMAP hDest, BITMAPINFO *pDestInfo, BITMAPINFO *pSrcInfo, char *pSrcBits)
659 {
660 HBITMAP hOld;
661 BOOL res = FALSE;
662 HDC hdcMem = CreateCompatibleDC(screen_dc);
663
664 if (hdcMem)
665 {
666 hOld = SelectObject(hdcMem, hDest);
667 res = StretchDIBits(hdcMem,
668 0, 0, pDestInfo->bmiHeader.biWidth, pDestInfo->bmiHeader.biHeight,
669 0, 0, pSrcInfo->bmiHeader.biWidth, pSrcInfo->bmiHeader.biHeight,
670 pSrcBits, pSrcInfo, DIB_RGB_COLORS, SRCCOPY);
671 SelectObject(hdcMem, hOld);
672 DeleteDC( hdcMem );
673 }
674
675 return res;
676 }
677
678 static HICON CURSORICON_CreateIconFromBMI( BITMAPINFO *bmi,
679 POINT16 hotspot, BOOL bIcon,
680 DWORD dwVersion,
681 INT width, INT height,
682 UINT cFlag )
683 {
684 HICON hObj;
685 int sizeAnd, sizeXor;
686 HBITMAP hAndBits = 0, hXorBits = 0; /* error condition for later */
687 BITMAP bmpXor, bmpAnd;
688 INT size;
689 BITMAPINFO *pSrcInfo, *pDestInfo;
690
691 if (dwVersion == 0x00020000)
692 {
693 FIXME_(cursor)("\t2.xx resources are not supported\n");
694 return 0;
695 }
696
697 /* Check bitmap header */
698
699 if ( (bmi->bmiHeader.biSize != sizeof(BITMAPCOREHEADER)) &&
700 (bmi->bmiHeader.biSize != sizeof(BITMAPINFOHEADER) ||
701 bmi->bmiHeader.biCompression != BI_RGB) )
702 {
703 WARN_(cursor)("\tinvalid resource bitmap header.\n");
704 return 0;
705 }
706
707 size = bitmap_info_size( bmi, DIB_RGB_COLORS );
708
709 if (!width) width = bmi->bmiHeader.biWidth;
710 if (!height) height = bmi->bmiHeader.biHeight/2;
711
712 /* Scale the hotspot */
713 if (((bmi->bmiHeader.biHeight/2 != height) || (bmi->bmiHeader.biWidth != width)) &&
714 hotspot.x != ICON_HOTSPOT && hotspot.y != ICON_HOTSPOT)
715 {
716 hotspot.x = (hotspot.x * width) / bmi->bmiHeader.biWidth;
717 hotspot.y = (hotspot.y * height) / (bmi->bmiHeader.biHeight / 2);
718 }
719
720 if (!screen_dc) screen_dc = CreateDCW( DISPLAYW, NULL, NULL, NULL );
721 if (screen_dc)
722 {
723 /* Make sure we have room for the monochrome bitmap later on.
724 * Note that BITMAPINFOINFO and BITMAPCOREHEADER are the same
725 * up to and including the biBitCount. In-memory icon resource
726 * format is as follows:
727 *
728 * BITMAPINFOHEADER icHeader // DIB header
729 * RGBQUAD icColors[] // Color table
730 * BYTE icXOR[] // DIB bits for XOR mask
731 * BYTE icAND[] // DIB bits for AND mask
732 */
733
734 pSrcInfo = HeapAlloc( GetProcessHeap(), 0,
735 max(size, sizeof(BITMAPINFOHEADER) + 2*sizeof(RGBQUAD)));
736 pDestInfo = HeapAlloc( GetProcessHeap(), 0,
737 max(size, sizeof(BITMAPINFOHEADER) + 2*sizeof(RGBQUAD)));
738 if (pSrcInfo && pDestInfo)
739 {
740 memcpy( pSrcInfo, bmi, size );
741 pSrcInfo->bmiHeader.biHeight /= 2;
742
743 memcpy( pDestInfo, bmi, size );
744 pDestInfo->bmiHeader.biWidth = width;
745 pDestInfo->bmiHeader.biHeight = height;
746 pDestInfo->bmiHeader.biSizeImage = 0;
747
748 /* Create the XOR bitmap */
749 if(pSrcInfo->bmiHeader.biBitCount == 32)
750 {
751 void *pDIBBuffer = NULL;
752 hXorBits = CreateDIBSection(screen_dc, pDestInfo, DIB_RGB_COLORS, &pDIBBuffer, NULL, 0);
753
754 if(hXorBits)
755 {
756 if (!stretch_blt_icon(hXorBits, pDestInfo, pSrcInfo, (char*)bmi + size))
757 {
758 DeleteObject(hXorBits);
759 hXorBits = 0;
760 }
761 }
762 }
763 else
764 {
765 hXorBits = CreateCompatibleBitmap(screen_dc, width, height);
766
767 if(hXorBits)
768 {
769 if(!stretch_blt_icon(hXorBits, pDestInfo, pSrcInfo, (char*)bmi + size))
770 {
771 DeleteObject(hXorBits);
772 hXorBits = 0;
773 }
774 }
775 }
776
777 if( hXorBits )
778 {
779 char* xbits = (char *)bmi + size +
780 get_dib_width_bytes( bmi->bmiHeader.biWidth,
781 bmi->bmiHeader.biBitCount ) * abs( bmi->bmiHeader.biHeight ) / 2;
782
783 pSrcInfo->bmiHeader.biBitCount = 1;
784 if (pSrcInfo->bmiHeader.biSize != sizeof(BITMAPCOREHEADER))
785 {
786 RGBQUAD *rgb = pSrcInfo->bmiColors;
787
788 pSrcInfo->bmiHeader.biClrUsed = pSrcInfo->bmiHeader.biClrImportant = 2;
789 rgb[0].rgbBlue = rgb[0].rgbGreen = rgb[0].rgbRed = 0x00;
790 rgb[1].rgbBlue = rgb[1].rgbGreen = rgb[1].rgbRed = 0xff;
791 rgb[0].rgbReserved = rgb[1].rgbReserved = 0;
792 }
793 else
794 {
795 RGBTRIPLE *rgb = (RGBTRIPLE *)(((BITMAPCOREHEADER *)pSrcInfo) + 1);
796
797 rgb[0].rgbtBlue = rgb[0].rgbtGreen = rgb[0].rgbtRed = 0x00;
798 rgb[1].rgbtBlue = rgb[1].rgbtGreen = rgb[1].rgbtRed = 0xff;
799 }
800
801 /* Create the AND bitmap */
802 hAndBits = CreateBitmap(width, height, 1, 1, NULL);
803
804 if(!stretch_blt_icon(hAndBits, pDestInfo, pSrcInfo, xbits))
805 {
806 DeleteObject(hAndBits);
807 hAndBits = 0;
808 }
809
810 if( !hAndBits )
811 {
812 DeleteObject( hXorBits );
813 hXorBits = 0;
814 }
815 }
816 }
817
818 HeapFree( GetProcessHeap(), 0, pSrcInfo );
819 HeapFree( GetProcessHeap(), 0, pDestInfo );
820 }
821
822 if( !hXorBits || !hAndBits )
823 {
824 WARN_(cursor)("\tunable to create an icon bitmap.\n");
825 return 0;
826 }
827
828 /* Now create the CURSORICONINFO structure */
829 GetObjectA( hXorBits, sizeof(bmpXor), &bmpXor );
830 GetObjectA( hAndBits, sizeof(bmpAnd), &bmpAnd );
831 sizeXor = bmpXor.bmHeight * bmpXor.bmWidthBytes;
832 sizeAnd = bmpAnd.bmHeight * bmpAnd.bmWidthBytes;
833
834 hObj = wow_handlers.alloc_icon_handle( sizeof(CURSORICONINFO) + sizeXor + sizeAnd );
835 if (hObj)
836 {
837 CURSORICONINFO *info = wow_handlers.get_icon_ptr( hObj );
838
839 info->ptHotSpot.x = hotspot.x;
840 info->ptHotSpot.y = hotspot.y;
841 info->nWidth = bmpXor.bmWidth;
842 info->nHeight = bmpXor.bmHeight;
843 info->nWidthBytes = bmpXor.bmWidthBytes;
844 info->bPlanes = bmpXor.bmPlanes;
845 info->bBitsPerPixel = bmpXor.bmBitsPixel;
846
847 /* Transfer the bitmap bits to the CURSORICONINFO structure */
848
849 GetBitmapBits( hAndBits, sizeAnd, info + 1 );
850 GetBitmapBits( hXorBits, sizeXor, (char *)(info + 1) + sizeAnd );
851 wow_handlers.release_icon_ptr( hObj, info );
852 }
853
854 DeleteObject( hAndBits );
855 DeleteObject( hXorBits );
856 return hObj;
857 }
858
859
860 /**********************************************************************
861 * .ANI cursor support
862 */
863 #define RIFF_FOURCC( c0, c1, c2, c3 ) \
864 ( (DWORD)(BYTE)(c0) | ( (DWORD)(BYTE)(c1) << 8 ) | \
865 ( (DWORD)(BYTE)(c2) << 16 ) | ( (DWORD)(BYTE)(c3) << 24 ) )
866
867 #define ANI_RIFF_ID RIFF_FOURCC('R', 'I', 'F', 'F')
868 #define ANI_LIST_ID RIFF_FOURCC('L', 'I', 'S', 'T')
869 #define ANI_ACON_ID RIFF_FOURCC('A', 'C', 'O', 'N')
870 #define ANI_anih_ID RIFF_FOURCC('a', 'n', 'i', 'h')
871 #define ANI_seq__ID RIFF_FOURCC('s', 'e', 'q', ' ')
872 #define ANI_fram_ID RIFF_FOURCC('f', 'r', 'a', 'm')
873
874 #define ANI_FLAG_ICON 0x1
875 #define ANI_FLAG_SEQUENCE 0x2
876
877 typedef struct {
878 DWORD header_size;
879 DWORD num_frames;
880 DWORD num_steps;
881 DWORD width;
882 DWORD height;
883 DWORD bpp;
884 DWORD num_planes;
885 DWORD display_rate;
886 DWORD flags;
887 } ani_header;
888
889 typedef struct {
890 DWORD data_size;
891 const unsigned char *data;
892 } riff_chunk_t;
893
894 static void dump_ani_header( const ani_header *header )
895 {
896 TRACE(" header size: %d\n", header->header_size);
897 TRACE(" frames: %d\n", header->num_frames);
898 TRACE(" steps: %d\n", header->num_steps);
899 TRACE(" width: %d\n", header->width);
900 TRACE(" height: %d\n", header->height);
901 TRACE(" bpp: %d\n", header->bpp);
902 TRACE(" planes: %d\n", header->num_planes);
903 TRACE(" display rate: %d\n", header->display_rate);
904 TRACE(" flags: 0x%08x\n", header->flags);
905 }
906
907
908 /*
909 * RIFF:
910 * DWORD "RIFF"
911 * DWORD size
912 * DWORD riff_id
913 * BYTE[] data
914 *
915 * LIST:
916 * DWORD "LIST"
917 * DWORD size
918 * DWORD list_id
919 * BYTE[] data
920 *
921 * CHUNK:
922 * DWORD chunk_id
923 * DWORD size
924 * BYTE[] data
925 */
926 static void riff_find_chunk( DWORD chunk_id, DWORD chunk_type, const riff_chunk_t *parent_chunk, riff_chunk_t *chunk )
927 {
928 const unsigned char *ptr = parent_chunk->data;
929 const unsigned char *end = parent_chunk->data + (parent_chunk->data_size - (2 * sizeof(DWORD)));
930
931 if (chunk_type == ANI_LIST_ID || chunk_type == ANI_RIFF_ID) end -= sizeof(DWORD);
932
933 while (ptr < end)
934 {
935 if ((!chunk_type && *(DWORD *)ptr == chunk_id )
936 || (chunk_type && *(DWORD *)ptr == chunk_type && *((DWORD *)ptr + 2) == chunk_id ))
937 {
938 ptr += sizeof(DWORD);
939 chunk->data_size = (*(DWORD *)ptr + 1) & ~1;
940 ptr += sizeof(DWORD);
941 if (chunk_type == ANI_LIST_ID || chunk_type == ANI_RIFF_ID) ptr += sizeof(DWORD);
942 chunk->data = ptr;
943
944 return;
945 }
946
947 ptr += sizeof(DWORD);
948 ptr += (*(DWORD *)ptr + 1) & ~1;
949 ptr += sizeof(DWORD);
950 }
951 }
952
953
954 /*
955 * .ANI layout:
956 *
957 * RIFF:'ACON' RIFF chunk
958 * |- CHUNK:'anih' Header
959 * |- CHUNK:'seq ' Sequence information (optional)
960 * \- LIST:'fram' Frame list
961 * |- CHUNK:icon Cursor frames
962 * |- CHUNK:icon
963 * |- ...
964 * \- CHUNK:icon
965 */
966 static HCURSOR CURSORICON_CreateIconFromANI( const LPBYTE bits, DWORD bits_size,
967 INT width, INT height, INT depth )
968 {
969 HCURSOR cursor;
970 ani_header header = {0};
971 LPBYTE frame_bits = 0;
972 POINT16 hotspot;
973 CURSORICONFILEDIRENTRY *entry;
974
975 riff_chunk_t root_chunk = { bits_size, bits };
976 riff_chunk_t ACON_chunk = {0};
977 riff_chunk_t anih_chunk = {0};
978 riff_chunk_t fram_chunk = {0};
979 const unsigned char *icon_data;
980
981 TRACE("bits %p, bits_size %d\n", bits, bits_size);
982
983 if (!bits) return 0;
984
985 riff_find_chunk( ANI_ACON_ID, ANI_RIFF_ID, &root_chunk, &ACON_chunk );
986 if (!ACON_chunk.data)
987 {
988 ERR("Failed to get root chunk.\n");
989 return 0;
990 }
991
992 riff_find_chunk( ANI_anih_ID, 0, &ACON_chunk, &anih_chunk );
993 if (!anih_chunk.data)
994 {
995 ERR("Failed to get 'anih' chunk.\n");
996 return 0;
997 }
998 memcpy( &header, anih_chunk.data, sizeof(header) );
999 dump_ani_header( &header );
1000
1001 riff_find_chunk( ANI_fram_ID, ANI_LIST_ID, &ACON_chunk, &fram_chunk );
1002 if (!fram_chunk.data)
1003 {
1004 ERR("Failed to get icon list.\n");
1005 return 0;
1006 }
1007
1008 /* FIXME: For now, just load the first frame. Before we can load all the
1009 * frames, we need to write the needed code in wineserver, etc. to handle
1010 * cursors. Once this code is written, we can extend it to support .ani
1011 * cursors and then update user32 and winex11.drv to load all frames.
1012 *
1013 * Hopefully this will at least make some games (C&C3, etc.) more playable
1014 * in the meantime.
1015 */
1016 FIXME("Loading all frames for .ani cursors not implemented.\n");
1017 icon_data = fram_chunk.data + (2 * sizeof(DWORD));
1018
1019 entry = CURSORICON_FindBestIconFile( (CURSORICONFILEDIR *) icon_data,
1020 width, height, depth );
1021
1022 frame_bits = HeapAlloc( GetProcessHeap(), 0, entry->dwDIBSize );
1023 memcpy( frame_bits, icon_data + entry->dwDIBOffset, entry->dwDIBSize );
1024
1025 if (!header.width || !header.height)
1026 {
1027 header.width = entry->bWidth;
1028 header.height = entry->bHeight;
1029 }
1030
1031 hotspot.x = entry->xHotspot;
1032 hotspot.y = entry->yHotspot;
1033
1034 cursor = CURSORICON_CreateIconFromBMI( (BITMAPINFO *) frame_bits, hotspot,
1035 FALSE, 0x00030000, header.width, header.height, 0 );
1036
1037 HeapFree( GetProcessHeap(), 0, frame_bits );
1038
1039 return cursor;
1040 }
1041
1042
1043 /**********************************************************************
1044 * CreateIconFromResourceEx (USER32.@)
1045 *
1046 * FIXME: Convert to mono when cFlag is LR_MONOCHROME. Do something
1047 * with cbSize parameter as well.
1048 */
1049 HICON WINAPI CreateIconFromResourceEx( LPBYTE bits, UINT cbSize,
1050 BOOL bIcon, DWORD dwVersion,
1051 INT width, INT height,
1052 UINT cFlag )
1053 {
1054 POINT16 hotspot;
1055 BITMAPINFO *bmi;
1056
1057 hotspot.x = ICON_HOTSPOT;
1058 hotspot.y = ICON_HOTSPOT;
1059
1060 TRACE_(cursor)("%p (%u bytes), ver %08x, %ix%i %s %s\n",
1061 bits, cbSize, dwVersion, width, height,
1062 bIcon ? "icon" : "cursor", (cFlag & LR_MONOCHROME) ? "mono" : "" );
1063
1064 if (bIcon)
1065 bmi = (BITMAPINFO *)bits;
1066 else /* get the hotspot */
1067 {
1068 POINT16 *pt = (POINT16 *)bits;
1069 hotspot = *pt;
1070 bmi = (BITMAPINFO *)(pt + 1);
1071 }
1072
1073 return CURSORICON_CreateIconFromBMI( bmi, hotspot, bIcon, dwVersion,
1074 width, height, cFlag );
1075 }
1076
1077
1078 /**********************************************************************
1079 * CreateIconFromResource (USER32.@)
1080 */
1081 HICON WINAPI CreateIconFromResource( LPBYTE bits, UINT cbSize,
1082 BOOL bIcon, DWORD dwVersion)
1083 {
1084 return CreateIconFromResourceEx( bits, cbSize, bIcon, dwVersion, 0,0,0);
1085 }
1086
1087
1088 static HICON CURSORICON_LoadFromFile( LPCWSTR filename,
1089 INT width, INT height, INT depth,
1090 BOOL fCursor, UINT loadflags)
1091 {
1092 CURSORICONFILEDIRENTRY *entry;
1093 CURSORICONFILEDIR *dir;
1094 DWORD filesize = 0;
1095 HICON hIcon = 0;
1096 LPBYTE bits;
1097 POINT16 hotspot;
1098
1099 TRACE("loading %s\n", debugstr_w( filename ));
1100
1101 bits = map_fileW( filename, &filesize );
1102 if (!bits)
1103 return hIcon;
1104
1105 /* Check for .ani. */
1106 if (memcmp( bits, "RIFF", 4 ) == 0)
1107 {
1108 hIcon = CURSORICON_CreateIconFromANI( bits, filesize, width, height,
1109 depth );
1110 goto end;
1111 }
1112
1113 dir = (CURSORICONFILEDIR*) bits;
1114 if ( filesize < sizeof(*dir) )
1115 goto end;
1116
1117 if ( filesize < (sizeof(*dir) + sizeof(dir->idEntries[0])*(dir->idCount-1)) )
1118 goto end;
1119
1120 if ( fCursor )
1121 entry = CURSORICON_FindBestCursorFile( dir, width, height, depth );
1122 else
1123 entry = CURSORICON_FindBestIconFile( dir, width, height, depth );
1124
1125 if ( !entry )
1126 goto end;
1127
1128 /* check that we don't run off the end of the file */
1129 if ( entry->dwDIBOffset > filesize )
1130 goto end;
1131 if ( entry->dwDIBOffset + entry->dwDIBSize > filesize )
1132 goto end;
1133
1134 /* Set the actual hotspot for cursors and ICON_HOTSPOT for icons. */
1135 if ( fCursor )
1136 {
1137 hotspot.x = entry->xHotspot;
1138 hotspot.y = entry->yHotspot;
1139 }
1140 else
1141 {
1142 hotspot.x = ICON_HOTSPOT;
1143 hotspot.y = ICON_HOTSPOT;
1144 }
1145 hIcon = CURSORICON_CreateIconFromBMI( (BITMAPINFO *)&bits[entry->dwDIBOffset],
1146 hotspot, !fCursor, 0x00030000,
1147 width, height, loadflags );
1148 end:
1149 TRACE("loaded %s -> %p\n", debugstr_w( filename ), hIcon );
1150 UnmapViewOfFile( bits );
1151 return hIcon;
1152 }
1153
1154 /**********************************************************************
1155 * CURSORICON_Load
1156 *
1157 * Load a cursor or icon from resource or file.
1158 */
1159 static HICON CURSORICON_Load(HINSTANCE hInstance, LPCWSTR name,
1160 INT width, INT height, INT depth,
1161 BOOL fCursor, UINT loadflags)
1162 {
1163 HANDLE handle = 0;
1164 HICON hIcon = 0;
1165 HRSRC hRsrc, hGroupRsrc;
1166 CURSORICONDIR *dir;
1167 CURSORICONDIRENTRY *dirEntry;
1168 LPBYTE bits;
1169 WORD wResId;
1170 DWORD dwBytesInRes;
1171
1172 TRACE("%p, %s, %dx%d, depth %d, fCursor %d, flags 0x%04x\n",
1173 hInstance, debugstr_w(name), width, height, depth, fCursor, loadflags);
1174
1175 if ( loadflags & LR_LOADFROMFILE ) /* Load from file */
1176 return CURSORICON_LoadFromFile( name, width, height, depth, fCursor, loadflags );
1177
1178 if (!hInstance) hInstance = user32_module; /* Load OEM cursor/icon */
1179
1180 /* don't cache 16-bit instances (FIXME: should never get 16-bit instances in the first place) */
1181 if (!HIWORD( hInstance )) loadflags &= ~LR_SHARED;
1182
1183 /* Get directory resource ID */
1184
1185 if (!(hRsrc = FindResourceW( hInstance, name,
1186 (LPWSTR)(fCursor ? RT_GROUP_CURSOR : RT_GROUP_ICON) )))
1187 return 0;
1188 hGroupRsrc = hRsrc;
1189
1190 /* Find the best entry in the directory */
1191
1192 if (!(handle = LoadResource( hInstance, hRsrc ))) return 0;
1193 if (!(dir = LockResource( handle ))) return 0;
1194 if (fCursor)
1195 dirEntry = CURSORICON_FindBestCursorRes( dir, width, height, depth );
1196 else
1197 dirEntry = CURSORICON_FindBestIconRes( dir, width, height, depth );
1198 if (!dirEntry) return 0;
1199 wResId = dirEntry->wResId;
1200 dwBytesInRes = dirEntry->dwBytesInRes;
1201 FreeResource( handle );
1202
1203 /* Load the resource */
1204
1205 if (!(hRsrc = FindResourceW(hInstance,MAKEINTRESOURCEW(wResId),
1206 (LPWSTR)(fCursor ? RT_CURSOR : RT_ICON) ))) return 0;
1207
1208 /* If shared icon, check whether it was already loaded */
1209 if ( (loadflags & LR_SHARED)
1210 && (hIcon = CURSORICON_FindSharedIcon( hInstance, hRsrc ) ) != 0 )
1211 return hIcon;
1212
1213 if (!(handle = LoadResource( hInstance, hRsrc ))) return 0;
1214 bits = LockResource( handle );
1215 hIcon = CreateIconFromResourceEx( bits, dwBytesInRes,
1216 !fCursor, 0x00030000, width, height, loadflags);
1217 FreeResource( handle );
1218
1219 /* If shared icon, add to icon cache */
1220
1221 if ( hIcon && (loadflags & LR_SHARED) )
1222 CURSORICON_AddSharedIcon( hInstance, hRsrc, hGroupRsrc, hIcon );
1223
1224 return hIcon;
1225 }
1226
1227
1228 /*************************************************************************
1229 * CURSORICON_ExtCopy
1230 *
1231 * Copies an Image from the Cache if LR_COPYFROMRESOURCE is specified
1232 *
1233 * PARAMS
1234 * Handle [I] handle to an Image
1235 * nType [I] Type of Handle (IMAGE_CURSOR | IMAGE_ICON)
1236 * iDesiredCX [I] The Desired width of the Image
1237 * iDesiredCY [I] The desired height of the Image
1238 * nFlags [I] The flags from CopyImage
1239 *
1240 * RETURNS
1241 * Success: The new handle of the Image
1242 *
1243 * NOTES
1244 * LR_COPYDELETEORG and LR_MONOCHROME are currently not implemented.
1245 * LR_MONOCHROME should be implemented by CreateIconFromResourceEx.
1246 * LR_COPYFROMRESOURCE will only work if the Image is in the Cache.
1247 *
1248 *
1249 */
1250
1251 static HICON CURSORICON_ExtCopy(HICON hIcon, UINT nType,
1252 INT iDesiredCX, INT iDesiredCY,
1253 UINT nFlags)
1254 {
1255 HICON hNew=0;
1256
1257 TRACE_(icon)("hIcon %p, nType %u, iDesiredCX %i, iDesiredCY %i, nFlags %u\n",
1258 hIcon, nType, iDesiredCX, iDesiredCY, nFlags);
1259
1260 if(hIcon == 0)
1261 {
1262 return 0;
1263 }
1264
1265 /* Best Fit or Monochrome */
1266 if( (nFlags & LR_COPYFROMRESOURCE
1267 && (iDesiredCX > 0 || iDesiredCY > 0))
1268 || nFlags & LR_MONOCHROME)
1269 {
1270 ICONCACHE* pIconCache = CURSORICON_FindCache(hIcon);
1271
1272 /* Not Found in Cache, then do a straight copy
1273 */
1274 if(pIconCache == NULL)
1275 {
1276 hNew = CopyIcon( hIcon );
1277 if(nFlags & LR_COPYFROMRESOURCE)
1278 {
1279 TRACE_(icon)("LR_COPYFROMRESOURCE: Failed to load from cache\n");
1280 }
1281 }
1282 else
1283 {
1284 int iTargetCY = iDesiredCY, iTargetCX = iDesiredCX;
1285 LPBYTE pBits;
1286 HANDLE hMem;
1287 HRSRC hRsrc;
1288 DWORD dwBytesInRes;
1289 WORD wResId;
1290 CURSORICONDIR *pDir;
1291 CURSORICONDIRENTRY *pDirEntry;
1292 BOOL bIsIcon = (nType == IMAGE_ICON);
1293
1294 /* Completing iDesiredCX CY for Monochrome Bitmaps if needed
1295 */
1296 if(((nFlags & LR_MONOCHROME) && !(nFlags & LR_COPYFROMRESOURCE))
1297 || (iDesiredCX == 0 && iDesiredCY == 0))
1298 {
1299 iDesiredCY = GetSystemMetrics(bIsIcon ?
1300 SM_CYICON : SM_CYCURSOR);
1301 iDesiredCX = GetSystemMetrics(bIsIcon ?
1302 SM_CXICON : SM_CXCURSOR);
1303 }
1304
1305 /* Retrieve the CURSORICONDIRENTRY
1306 */
1307 if (!(hMem = LoadResource( pIconCache->hModule ,
1308 pIconCache->hGroupRsrc)))
1309 {
1310 return 0;
1311 }
1312 if (!(pDir = LockResource( hMem )))
1313 {
1314 return 0;
1315 }
1316
1317 /* Find Best Fit
1318 */
1319 if(bIsIcon)
1320 {
1321 pDirEntry = CURSORICON_FindBestIconRes(
1322 pDir, iDesiredCX, iDesiredCY, 256 );
1323 }
1324 else
1325 {
1326 pDirEntry = CURSORICON_FindBestCursorRes(
1327 pDir, iDesiredCX, iDesiredCY, 1);
1328 }
1329
1330 wResId = pDirEntry->wResId;
1331 dwBytesInRes = pDirEntry->dwBytesInRes;
1332 FreeResource(hMem);
1333
1334 TRACE_(icon)("ResID %u, BytesInRes %u, Width %d, Height %d DX %d, DY %d\n",
1335 wResId, dwBytesInRes, pDirEntry->ResInfo.icon.bWidth,
1336 pDirEntry->ResInfo.icon.bHeight, iDesiredCX, iDesiredCY);
1337
1338 /* Get the Best Fit
1339 */
1340 if (!(hRsrc = FindResourceW(pIconCache->hModule ,
1341 MAKEINTRESOURCEW(wResId), (LPWSTR)(bIsIcon ? RT_ICON : RT_CURSOR))))
1342 {
1343 return 0;
1344 }
1345 if (!(hMem = LoadResource( pIconCache->hModule , hRsrc )))
1346 {
1347 return 0;
1348 }
1349
1350 pBits = LockResource( hMem );
1351
1352 if(nFlags & LR_DEFAULTSIZE)
1353 {
1354 iTargetCY = GetSystemMetrics(SM_CYICON);
1355 iTargetCX = GetSystemMetrics(SM_CXICON);
1356 }
1357
1358 /* Create a New Icon with the proper dimension
1359 */
1360 hNew = CreateIconFromResourceEx( pBits, dwBytesInRes,
1361 bIsIcon, 0x00030000, iTargetCX, iTargetCY, nFlags);
1362 FreeResource(hMem);
1363 }
1364 }
1365 else hNew = CopyIcon( hIcon );
1366 return hNew;
1367 }
1368
1369
1370 /***********************************************************************
1371 * CreateCursor (USER32.@)
1372 */
1373 HCURSOR WINAPI CreateCursor( HINSTANCE hInstance,
1374 INT xHotSpot, INT yHotSpot,
1375 INT nWidth, INT nHeight,
1376 LPCVOID lpANDbits, LPCVOID lpXORbits )
1377 {
1378 ICONINFO info;
1379 HCURSOR hCursor;
1380
1381 TRACE_(cursor)("%dx%d spot=%d,%d xor=%p and=%p\n",
1382 nWidth, nHeight, xHotSpot, yHotSpot, lpXORbits, lpANDbits);
1383
1384 info.fIcon = FALSE;
1385 info.xHotspot = xHotSpot;
1386 info.yHotspot = yHotSpot;
1387 info.hbmMask = CreateBitmap( nWidth, nHeight, 1, 1, lpANDbits );
1388 info.hbmColor = CreateBitmap( nWidth, nHeight, 1, 1, lpXORbits );
1389 hCursor = CreateIconIndirect( &info );
1390 DeleteObject( info.hbmMask );
1391 DeleteObject( info.hbmColor );
1392 return hCursor;
1393 }
1394
1395
1396 /***********************************************************************
1397 * CreateIcon (USER32.@)
1398 *
1399 * Creates an icon based on the specified bitmaps. The bitmaps must be
1400 * provided in a device dependent format and will be resized to
1401 * (SM_CXICON,SM_CYICON) and depth converted to match the screen's color
1402 * depth. The provided bitmaps must be top-down bitmaps.
1403 * Although Windows does not support 15bpp(*) this API must support it
1404 * for Winelib applications.
1405 *
1406 * (*) Windows does not support 15bpp but it supports the 555 RGB 16bpp
1407 * format!
1408 *
1409 * RETURNS
1410 * Success: handle to an icon
1411 * Failure: NULL
1412 *
1413 * FIXME: Do we need to resize the bitmaps?
1414 */
1415 HICON WINAPI CreateIcon(
1416 HINSTANCE hInstance, /* [in] the application's hInstance */
1417 INT nWidth, /* [in] the width of the provided bitmaps */
1418 INT nHeight, /* [in] the height of the provided bitmaps */
1419 BYTE bPlanes, /* [in] the number of planes in the provided bitmaps */
1420 BYTE bBitsPixel, /* [in] the number of bits per pixel of the lpXORbits bitmap */
1421 LPCVOID lpANDbits, /* [in] a monochrome bitmap representing the icon's mask */
1422 LPCVOID lpXORbits) /* [in] the icon's 'color' bitmap */
1423 {
1424 ICONINFO iinfo;
1425 HICON hIcon;
1426
1427 TRACE_(icon)("%dx%d, planes %d, bpp %d, xor %p, and %p\n",
1428 nWidth, nHeight, bPlanes, bBitsPixel, lpXORbits, lpANDbits);
1429
1430 iinfo.fIcon = TRUE;
1431 iinfo.xHotspot = ICON_HOTSPOT;
1432 iinfo.yHotspot = ICON_HOTSPOT;
1433 iinfo.hbmMask = CreateBitmap( nWidth, nHeight, 1, 1, lpANDbits );
1434 iinfo.hbmColor = CreateBitmap( nWidth, nHeight, bPlanes, bBitsPixel, lpXORbits );
1435
1436 hIcon = CreateIconIndirect( &iinfo );
1437
1438 DeleteObject( iinfo.hbmMask );
1439 DeleteObject( iinfo.hbmColor );
1440
1441 return hIcon;
1442 }
1443
1444
1445 /***********************************************************************
1446 * CopyIcon (USER32.@)
1447 */
1448 HICON WINAPI CopyIcon( HICON hIcon )
1449 {
1450 CURSORICONINFO *ptrOld, *ptrNew;
1451 int size;
1452 HICON hNew;
1453
1454 if (!(ptrOld = wow_handlers.get_icon_ptr( hIcon ))) return 0;
1455 size = sizeof(CURSORICONINFO);
1456 size += ptrOld->nHeight * get_bitmap_width_bytes( ptrOld->nWidth, 1 ); /* and bitmap */
1457 size += ptrOld->nHeight * ptrOld->nWidthBytes; /* xor bitmap */
1458 hNew = wow_handlers.alloc_icon_handle( size );
1459 ptrNew = wow_handlers.get_icon_ptr( hNew );
1460 memcpy( ptrNew, ptrOld, size );
1461 wow_handlers.release_icon_ptr( hIcon, ptrOld );
1462 wow_handlers.release_icon_ptr( hNew, ptrNew );
1463 return hNew;
1464 }
1465
1466
1467 /***********************************************************************
1468 * DestroyIcon (USER32.@)
1469 */
1470 BOOL WINAPI DestroyIcon( HICON hIcon )
1471 {
1472 TRACE_(icon)("%p\n", hIcon );
1473
1474 if (CURSORICON_DelSharedIcon( hIcon ) == -1)
1475 wow_handlers.free_icon_handle( hIcon );
1476 return TRUE;
1477 }
1478
1479
1480 /***********************************************************************
1481 * DestroyCursor (USER32.@)
1482 */
1483 BOOL WINAPI DestroyCursor( HCURSOR hCursor )
1484 {
1485 if (get_user_thread_info()->cursor == hCursor)
1486 {
1487 WARN_(cursor)("Destroying active cursor!\n" );
1488 return FALSE;
1489 }
1490 return DestroyIcon( hCursor );
1491 }
1492
1493 /***********************************************************************
1494 * bitmap_has_alpha_channel
1495 *
1496 * Analyses bits bitmap to determine if alpha data is present.
1497 *
1498 * PARAMS
1499 * bpp [I] The bits-per-pixel of the bitmap
1500 * bitmapBits [I] A pointer to the bitmap data
1501 * bitmapLength [I] The length of the bitmap in bytes
1502 *
1503 * RETURNS
1504 * TRUE if an alpha channel is discovered, FALSE
1505 *
1506 * NOTE
1507 * Windows' behaviour is that if the icon bitmap is 32-bit and at
1508 * least one pixel has a non-zero alpha, then the bitmap is a
1509 * treated as having an alpha channel transparentcy. Otherwise,
1510 * it's treated as being completely opaque.
1511 *
1512 */
1513 static BOOL bitmap_has_alpha_channel( int bpp, unsigned char *bitmapBits,
1514 unsigned int bitmapLength )
1515 {
1516 /* Detect an alpha channel by looking for non-zero alpha pixels */
1517 if(bpp == 32)
1518 {
1519 unsigned int offset;
1520 for(offset = 3; offset < bitmapLength; offset += 4)
1521 {
1522 if(bitmapBits[offset] != 0)
1523 {
1524 return TRUE;
1525 }
1526 }
1527 }
1528 return FALSE;
1529 }
1530
1531 /***********************************************************************
1532 * premultiply_alpha_channel
1533 *
1534 * Premultiplies the color channels of a 32-bit bitmap by the alpha
1535 * channel. This is a necessary step that must be carried out on
1536 * the image before it is passed to GdiAlphaBlend
1537 *
1538 * PARAMS
1539 * destBitmap [I] The destination bitmap buffer
1540 * srcBitmap [I] The source bitmap buffer
1541 * bitmapLength [I] The length of the bitmap in bytes
1542 *
1543 */
1544 static void premultiply_alpha_channel( unsigned char *destBitmap,
1545 unsigned char *srcBitmap,
1546 unsigned int bitmapLength )
1547 {
1548 unsigned char *destPixel = destBitmap;
1549 unsigned char *srcPixel = srcBitmap;
1550
1551 while(destPixel < destBitmap + bitmapLength)
1552 {
1553 unsigned char alpha = srcPixel[3];
1554 *(destPixel++) = *(srcPixel++) * alpha / 255;
1555 *(destPixel++) = *(srcPixel++) * alpha / 255;
1556 *(destPixel++) = *(srcPixel++) * alpha / 255;
1557 *(destPixel++) = *(srcPixel++);
1558 }
1559 }
1560
1561 /***********************************************************************
1562 * DrawIcon (USER32.@)
1563 */
1564 BOOL WINAPI DrawIcon( HDC hdc, INT x, INT y, HICON hIcon )
1565 {
1566 CURSORICONINFO *ptr;
1567 HDC hMemDC;
1568 HBITMAP hXorBits = NULL, hAndBits = NULL, hBitTemp = NULL;
1569 COLORREF oldFg, oldBg;
1570 unsigned char *xorBitmapBits;
1571 unsigned int dibLength;
1572
1573 TRACE("%p, (%d,%d), %p\n", hdc, x, y, hIcon);
1574
1575 if (!(ptr = wow_handlers.get_icon_ptr( hIcon ))) return FALSE;
1576 if (!(hMemDC = CreateCompatibleDC( hdc )))
1577 {
1578 wow_handlers.release_icon_ptr( hIcon, ptr );
1579 return FALSE;
1580 }
1581
1582 dibLength = ptr->nHeight * get_bitmap_width_bytes(
1583 ptr->nWidth, ptr->bBitsPerPixel);
1584
1585 xorBitmapBits = (unsigned char *)(ptr + 1) + ptr->nHeight *
1586 get_bitmap_width_bytes(ptr->nWidth, 1);
1587
1588 oldFg = SetTextColor( hdc, RGB(0,0,0) );
1589 oldBg = SetBkColor( hdc, RGB(255,255,255) );
1590
1591 if(bitmap_has_alpha_channel(ptr->bBitsPerPixel, xorBitmapBits, dibLength))
1592 {
1593 BITMAPINFOHEADER bmih;
1594 unsigned char *dibBits;
1595
1596 memset(&bmih, 0, sizeof(BITMAPINFOHEADER));
1597 bmih.biSize = sizeof(BITMAPINFOHEADER);
1598 bmih.biWidth = ptr->nWidth;
1599 bmih.biHeight = -ptr->nHeight;
1600 bmih.biPlanes = ptr->bPlanes;
1601 bmih.biBitCount = 32;
1602 bmih.biCompression = BI_RGB;
1603
1604 hXorBits = CreateDIBSection(hdc, (BITMAPINFO*)&bmih, DIB_RGB_COLORS,
1605 (void*)&dibBits, NULL, 0);
1606
1607 if (hXorBits && dibBits)
1608 {
1609 BLENDFUNCTION pixelblend = { AC_SRC_OVER, 0, 255, AC_SRC_ALPHA };
1610
1611 /* Do the alpha blending render */
1612 premultiply_alpha_channel(dibBits, xorBitmapBits, dibLength);
1613 hBitTemp = SelectObject( hMemDC, hXorBits );
1614 /* Destination width/height has to be "System Large" size */
1615 GdiAlphaBlend(hdc, x, y, GetSystemMetrics(SM_CXICON),
1616 GetSystemMetrics(SM_CYICON), hMemDC,
1617 0, 0, ptr->nWidth, ptr->nHeight, pixelblend);
1618 SelectObject( hMemDC, hBitTemp );
1619 }
1620 }
1621 else
1622 {
1623 hAndBits = CreateBitmap( ptr->nWidth, ptr->nHeight, 1, 1, ptr + 1 );
1624 hXorBits = CreateBitmap( ptr->nWidth, ptr->nHeight, ptr->bPlanes,
1625 ptr->bBitsPerPixel, xorBitmapBits);
1626
1627 if (hXorBits && hAndBits)
1628 {
1629 hBitTemp = SelectObject( hMemDC, hAndBits );
1630 StretchBlt( hdc, x, y, GetSystemMetrics(SM_CXICON),
1631 GetSystemMetrics(SM_CYICON), hMemDC, 0, 0,
1632 ptr->nWidth, ptr->nHeight, SRCAND );
1633 SelectObject( hMemDC, hXorBits );
1634 StretchBlt( hdc, x, y, GetSystemMetrics(SM_CXICON),
1635 GetSystemMetrics(SM_CYICON), hMemDC, 0, 0,
1636 ptr->nWidth, ptr->nHeight, SRCINVERT );
1637 SelectObject( hMemDC, hBitTemp );
1638 }
1639 }
1640
1641 DeleteDC( hMemDC );
1642 if (hXorBits) DeleteObject( hXorBits );
1643 if (hAndBits) DeleteObject( hAndBits );
1644 wow_handlers.release_icon_ptr( hIcon, ptr );
1645 SetTextColor( hdc, oldFg );
1646 SetBkColor( hdc, oldBg );
1647 return TRUE;
1648 }
1649
1650 /***********************************************************************
1651 * SetCursor (USER32.@)
1652 *
1653 * Set the cursor shape.
1654 *
1655 * RETURNS
1656 * A handle to the previous cursor shape.
1657 */
1658 HCURSOR WINAPI DECLSPEC_HOTPATCH SetCursor( HCURSOR hCursor /* [in] Handle of cursor to show */ )
1659 {
1660 struct user_thread_info *thread_info = get_user_thread_info();
1661 HCURSOR hOldCursor;
1662
1663 if (hCursor == thread_info->cursor) return hCursor; /* No change */
1664 TRACE("%p\n", hCursor);
1665 hOldCursor = thread_info->cursor;
1666 thread_info->cursor = hCursor;
1667 /* Change the cursor shape only if it is visible */
1668 if (thread_info->cursor_count >= 0)
1669 {
1670 CURSORICONINFO *info = wow_handlers.get_icon_ptr( hCursor );
1671 /* release before calling driver (FIXME) */
1672 if (info) wow_handlers.release_icon_ptr( hCursor, info );
1673 USER_Driver->pSetCursor( info );
1674 }
1675 return hOldCursor;
1676 }
1677
1678 /***********************************************************************
1679 * ShowCursor (USER32.@)
1680 */
1681 INT WINAPI DECLSPEC_HOTPATCH ShowCursor( BOOL bShow )
1682 {
1683 struct user_thread_info *thread_info = get_user_thread_info();
1684
1685 TRACE("%d, count=%d\n", bShow, thread_info->cursor_count );
1686
1687 if (bShow)
1688 {
1689 if (++thread_info->cursor_count == 0) /* Show it */
1690 {
1691 CURSORICONINFO *info = wow_handlers.get_icon_ptr( thread_info->cursor );
1692 /* release before calling driver (FIXME) */
1693 if (info) wow_handlers.release_icon_ptr( thread_info->cursor, info );
1694 USER_Driver->pSetCursor( info );
1695 }
1696 }
1697 else
1698 {
1699 if (--thread_info->cursor_count == -1) /* Hide it */
1700 USER_Driver->pSetCursor( NULL );
1701 }
1702 return thread_info->cursor_count;
1703 }
1704
1705 /***********************************************************************
1706 * GetCursor (USER32.@)
1707 */
1708 HCURSOR WINAPI GetCursor(void)
1709 {
1710 return get_user_thread_info()->cursor;
1711 }
1712
1713
1714 /***********************************************************************
1715 * ClipCursor (USER32.@)
1716 */
1717 BOOL WINAPI DECLSPEC_HOTPATCH ClipCursor( const RECT *rect )
1718 {
1719 RECT virt;
1720
1721 SetRect( &virt, 0, 0, GetSystemMetrics( SM_CXVIRTUALSCREEN ),
1722 GetSystemMetrics( SM_CYVIRTUALSCREEN ) );
1723 OffsetRect( &virt, GetSystemMetrics( SM_XVIRTUALSCREEN ),
1724 GetSystemMetrics( SM_YVIRTUALSCREEN ) );
1725
1726 TRACE( "Clipping to: %s was: %s screen: %s\n", wine_dbgstr_rect(rect),
1727 wine_dbgstr_rect(&CURSOR_ClipRect), wine_dbgstr_rect(&virt) );
1728
1729 if (!IntersectRect( &CURSOR_ClipRect, &virt, rect ))
1730 CURSOR_ClipRect = virt;
1731
1732 USER_Driver->pClipCursor( rect );
1733 return TRUE;
1734 }
1735
1736
1737 /***********************************************************************
1738 * GetClipCursor (USER32.@)
1739 */
1740 BOOL WINAPI DECLSPEC_HOTPATCH GetClipCursor( RECT *rect )
1741 {
1742 /* If this is first time - initialize the rect */
1743 if (IsRectEmpty( &CURSOR_ClipRect )) ClipCursor( NULL );
1744
1745 return CopyRect( rect, &CURSOR_ClipRect );
1746 }
1747
1748
1749 /***********************************************************************
1750 * SetSystemCursor (USER32.@)
1751 */
1752 BOOL WINAPI SetSystemCursor(HCURSOR hcur, DWORD id)
1753 {
1754 FIXME("(%p,%08x),stub!\n", hcur, id);
1755 return TRUE;
1756 }
1757
1758
1759 /**********************************************************************
1760 * LookupIconIdFromDirectoryEx (USER32.@)
1761 */
1762 INT WINAPI LookupIconIdFromDirectoryEx( LPBYTE xdir, BOOL bIcon,
1763 INT width, INT height, UINT cFlag )
1764 {
1765 CURSORICONDIR *dir = (CURSORICONDIR*)xdir;
1766 UINT retVal = 0;
1767 if( dir && !dir->idReserved && (dir->idType & 3) )
1768 {
1769 CURSORICONDIRENTRY* entry;
1770
1771 const HDC hdc = GetDC(0);
1772 const int depth = (cFlag & LR_MONOCHROME) ?
1773 1 : GetDeviceCaps(hdc, BITSPIXEL);
1774 ReleaseDC(0, hdc);
1775
1776 if( bIcon )
1777 entry = CURSORICON_FindBestIconRes( dir, width, height, depth );
1778 else
1779 entry = CURSORICON_FindBestCursorRes( dir, width, height, depth );
1780
1781 if( entry ) retVal = entry->wResId;
1782 }
1783 else WARN_(cursor)("invalid resource directory\n");
1784 return retVal;
1785 }
1786
1787 /**********************************************************************
1788 * LookupIconIdFromDirectory (USER32.@)
1789 */
1790 INT WINAPI LookupIconIdFromDirectory( LPBYTE dir, BOOL bIcon )
1791 {
1792 return LookupIconIdFromDirectoryEx( dir, bIcon,
1793 bIcon ? GetSystemMetrics(SM_CXICON) : GetSystemMetrics(SM_CXCURSOR),
1794 bIcon ? GetSystemMetrics(SM_CYICON) : GetSystemMetrics(SM_CYCURSOR), bIcon ? 0 : LR_MONOCHROME );
1795 }
1796
1797 /***********************************************************************
1798 * LoadCursorW (USER32.@)
1799 */
1800 HCURSOR WINAPI LoadCursorW(HINSTANCE hInstance, LPCWSTR name)
1801 {
1802 TRACE("%p, %s\n", hInstance, debugstr_w(name));
1803
1804 return LoadImageW( hInstance, name, IMAGE_CURSOR, 0, 0,
1805 LR_SHARED | LR_DEFAULTSIZE );
1806 }
1807
1808 /***********************************************************************
1809 * LoadCursorA (USER32.@)
1810 */
1811 HCURSOR WINAPI LoadCursorA(HINSTANCE hInstance, LPCSTR name)
1812 {
1813 TRACE("%p, %s\n", hInstance, debugstr_a(name));
1814
1815 return LoadImageA( hInstance, name, IMAGE_CURSOR, 0, 0,
1816 LR_SHARED | LR_DEFAULTSIZE );
1817 }
1818
1819 /***********************************************************************
1820 * LoadCursorFromFileW (USER32.@)
1821 */
1822 HCURSOR WINAPI LoadCursorFromFileW (LPCWSTR name)
1823 {
1824 TRACE("%s\n", debugstr_w(name));
1825
1826 return LoadImageW( 0, name, IMAGE_CURSOR, 0, 0,
1827 LR_LOADFROMFILE | LR_DEFAULTSIZE );
1828 }
1829
1830 /***********************************************************************
1831 * LoadCursorFromFileA (USER32.@)
1832 */
1833 HCURSOR WINAPI LoadCursorFromFileA (LPCSTR name)
1834 {
1835 TRACE("%s\n", debugstr_a(name));
1836
1837 return LoadImageA( 0, name, IMAGE_CURSOR, 0, 0,
1838 LR_LOADFROMFILE | LR_DEFAULTSIZE );
1839 }
1840
1841 /***********************************************************************
1842 * LoadIconW (USER32.@)
1843 */
1844 HICON WINAPI LoadIconW(HINSTANCE hInstance, LPCWSTR name)
1845 {
1846 TRACE("%p, %s\n", hInstance, debugstr_w(name));
1847
1848 return LoadImageW( hInstance, name, IMAGE_ICON, 0, 0,
1849 LR_SHARED | LR_DEFAULTSIZE );
1850 }
1851
1852 /***********************************************************************
1853 * LoadIconA (USER32.@)
1854 */
1855 HICON WINAPI LoadIconA(HINSTANCE hInstance, LPCSTR name)
1856 {
1857 TRACE("%p, %s\n", hInstance, debugstr_a(name));
1858
1859 return LoadImageA( hInstance, name, IMAGE_ICON, 0, 0,
1860 LR_SHARED | LR_DEFAULTSIZE );
1861 }
1862
1863 /**********************************************************************
1864 * GetIconInfo (USER32.@)
1865 */
1866 BOOL WINAPI GetIconInfo(HICON hIcon, PICONINFO iconinfo)
1867 {
1868 CURSORICONINFO *ciconinfo;
1869 INT height;
1870
1871 if (!(ciconinfo = wow_handlers.get_icon_ptr( hIcon ))) return FALSE;
1872
1873 TRACE("%p => %dx%d, %d bpp\n", hIcon,
1874 ciconinfo->nWidth, ciconinfo->nHeight, ciconinfo->bBitsPerPixel);
1875
1876 if ( (ciconinfo->ptHotSpot.x == ICON_HOTSPOT) &&
1877 (ciconinfo->ptHotSpot.y == ICON_HOTSPOT) )
1878 {
1879 iconinfo->fIcon = TRUE;
1880 iconinfo->xHotspot = ciconinfo->nWidth / 2;
1881 iconinfo->yHotspot = ciconinfo->nHeight / 2;
1882 }
1883 else
1884 {
1885 iconinfo->fIcon = FALSE;
1886 iconinfo->xHotspot = ciconinfo->ptHotSpot.x;
1887 iconinfo->yHotspot = ciconinfo->ptHotSpot.y;
1888 }
1889
1890 height = ciconinfo->nHeight;
1891
1892 if (ciconinfo->bBitsPerPixel > 1)
1893 {
1894 iconinfo->hbmColor = CreateBitmap( ciconinfo->nWidth, ciconinfo->nHeight,
1895 ciconinfo->bPlanes, ciconinfo->bBitsPerPixel,
1896 (char *)(ciconinfo + 1)
1897 + ciconinfo->nHeight *
1898 get_bitmap_width_bytes (ciconinfo->nWidth,1) );
1899 }
1900 else
1901 {
1902 iconinfo->hbmColor = 0;
1903 height *= 2;
1904 }
1905
1906 iconinfo->hbmMask = CreateBitmap ( ciconinfo->nWidth, height,
1907 1, 1, ciconinfo + 1);
1908 wow_handlers.release_icon_ptr( hIcon, ciconinfo );
1909
1910 return TRUE;
1911 }
1912
1913 /**********************************************************************
1914 * CreateIconIndirect (USER32.@)
1915 */
1916 HICON WINAPI CreateIconIndirect(PICONINFO iconinfo)
1917 {
1918 DIBSECTION bmpXor;
1919 BITMAP bmpAnd;
1920 HICON hObj;
1921 int xor_objsize = 0, sizeXor = 0, sizeAnd, planes, bpp;
1922
1923 TRACE("color %p, mask %p, hotspot %ux%u, fIcon %d\n",
1924 iconinfo->hbmColor, iconinfo->hbmMask,
1925 iconinfo->xHotspot, iconinfo->yHotspot, iconinfo->fIcon);
1926
1927 if (!iconinfo->hbmMask) return 0;
1928
1929 planes = GetDeviceCaps( screen_dc, PLANES );
1930 bpp = GetDeviceCaps( screen_dc, BITSPIXEL );
1931
1932 if (iconinfo->hbmColor)
1933 {
1934 xor_objsize = GetObjectW( iconinfo->hbmColor, sizeof(bmpXor), &bmpXor );
1935 TRACE("color: width %d, height %d, width bytes %d, planes %u, bpp %u\n",
1936 bmpXor.dsBm.bmWidth, bmpXor.dsBm.bmHeight, bmpXor.dsBm.bmWidthBytes,
1937 bmpXor.dsBm.bmPlanes, bmpXor.dsBm.bmBitsPixel);
1938 /* we can use either depth 1 or screen depth for xor bitmap */
1939 if (bmpXor.dsBm.bmPlanes == 1 && bmpXor.dsBm.bmBitsPixel == 1) planes = bpp = 1;
1940 sizeXor = bmpXor.dsBm.bmHeight * planes * get_bitmap_width_bytes( bmpXor.dsBm.bmWidth, bpp );
1941 }
1942 GetObjectW( iconinfo->hbmMask, sizeof(bmpAnd), &bmpAnd );
1943 TRACE("mask: width %d, height %d, width bytes %d, planes %u, bpp %u\n",
1944 bmpAnd.bmWidth, bmpAnd.bmHeight, bmpAnd.bmWidthBytes,
1945 bmpAnd.bmPlanes, bmpAnd.bmBitsPixel);
1946
1947 sizeAnd = bmpAnd.bmHeight * get_bitmap_width_bytes(bmpAnd.bmWidth, 1);
1948
1949 hObj = wow_handlers.alloc_icon_handle( sizeof(CURSORICONINFO) + sizeXor + sizeAnd );
1950 if (hObj)
1951 {
1952 CURSORICONINFO *info = wow_handlers.get_icon_ptr( hObj );
1953
1954 /* If we are creating an icon, the hotspot is unused */
1955 if (iconinfo->fIcon)
1956 {
1957 info->ptHotSpot.x = ICON_HOTSPOT;
1958 info->ptHotSpot.y = ICON_HOTSPOT;
1959 }
1960 else
1961 {
1962 info->ptHotSpot.x = iconinfo->xHotspot;
1963 info->ptHotSpot.y = iconinfo->yHotspot;
1964 }
1965
1966 if (iconinfo->hbmColor)
1967 {
1968 info->nWidth = bmpXor.dsBm.bmWidth;
1969 info->nHeight = bmpXor.dsBm.bmHeight;
1970 info->nWidthBytes = bmpXor.dsBm.bmWidthBytes;
1971 info->bPlanes = planes;
1972 info->bBitsPerPixel = bpp;
1973 }
1974 else
1975 {
1976 info->nWidth = bmpAnd.bmWidth;
1977 info->nHeight = bmpAnd.bmHeight / 2;
1978 info->nWidthBytes = get_bitmap_width_bytes(bmpAnd.bmWidth, 1);
1979 info->bPlanes = 1;
1980 info->bBitsPerPixel = 1;
1981 }
1982
1983 /* Transfer the bitmap bits to the CURSORICONINFO structure */
1984
1985 /* Some apps pass a color bitmap as a mask, convert it to b/w */
1986 if (bmpAnd.bmBitsPixel == 1)
1987 {
1988 GetBitmapBits( iconinfo->hbmMask, sizeAnd, info + 1 );
1989 }
1990 else
1991 {
1992 HDC hdc_mem, hdc_mem2;
1993 HBITMAP hbmp_mem_old, hbmp_mem2_old, hbmp_mono;
1994
1995 hdc_mem = CreateCompatibleDC( 0 );
1996 hdc_mem2 = CreateCompatibleDC( 0 );
1997
1998 hbmp_mono = CreateBitmap( bmpAnd.bmWidth, bmpAnd.bmHeight, 1, 1, NULL );
1999
2000 hbmp_mem_old = SelectObject( hdc_mem, iconinfo->hbmMask );
2001 hbmp_mem2_old = SelectObject( hdc_mem2, hbmp_mono );
2002
2003 BitBlt( hdc_mem2, 0, 0, bmpAnd.bmWidth, bmpAnd.bmHeight, hdc_mem, 0, 0, SRCCOPY );
2004
2005 SelectObject( hdc_mem, hbmp_mem_old );
2006 SelectObject( hdc_mem2, hbmp_mem2_old );
2007
2008 DeleteDC( hdc_mem );
2009 DeleteDC( hdc_mem2 );
2010
2011 GetBitmapBits( hbmp_mono, sizeAnd, info + 1 );
2012 DeleteObject( hbmp_mono );
2013 }
2014
2015 if (iconinfo->hbmColor)
2016 {
2017 char *dst_bits = (char*)(info + 1) + sizeAnd;
2018
2019 if (bmpXor.dsBm.bmPlanes == planes && bmpXor.dsBm.bmBitsPixel == bpp)
2020 GetBitmapBits( iconinfo->hbmColor, sizeXor, dst_bits );
2021 else
2022 {
2023 BITMAPINFO bminfo;
2024 int dib_width = get_dib_width_bytes( info->nWidth, info->bBitsPerPixel );
2025 int bitmap_width = get_bitmap_width_bytes( info->nWidth, info->bBitsPerPixel );
2026
2027 bminfo.bmiHeader.biSize = sizeof(bminfo);
2028 bminfo.bmiHeader.biWidth = info->nWidth;
2029 bminfo.bmiHeader.biHeight = info->nHeight;
2030 bminfo.bmiHeader.biPlanes = info->bPlanes;
2031 bminfo.bmiHeader.biBitCount = info->bBitsPerPixel;
2032 bminfo.bmiHeader.biCompression = BI_RGB;
2033 bminfo.bmiHeader.biSizeImage = info->nHeight * dib_width;
2034 bminfo.bmiHeader.biXPelsPerMeter = 0;
2035 bminfo.bmiHeader.biYPelsPerMeter = 0;
2036 bminfo.bmiHeader.biClrUsed = 0;
2037 bminfo.bmiHeader.biClrImportant = 0;
2038
2039 /* swap lines for dib sections */
2040 if (xor_objsize == sizeof(DIBSECTION))
2041 bminfo.bmiHeader.biHeight = -bminfo.bmiHeader.biHeight;
2042
2043 if (dib_width != bitmap_width) /* need to fixup alignment */
2044 {
2045 char *src_bits = HeapAlloc( GetProcessHeap(), 0, bminfo.bmiHeader.biSizeImage );
2046
2047 if (src_bits && GetDIBits( screen_dc, iconinfo->hbmColor, 0, info->nHeight,
2048 src_bits, &bminfo, DIB_RGB_COLORS ))
2049 {
2050 int y;
2051 for (y = 0; y < info->nHeight; y++)
2052 memcpy( dst_bits + y * bitmap_width, src_bits + y * dib_width, bitmap_width );
2053 }
2054 HeapFree( GetProcessHeap(), 0, src_bits );
2055 }
2056 else
2057 GetDIBits( screen_dc, iconinfo->hbmColor, 0, info->nHeight,
2058 dst_bits, &bminfo, DIB_RGB_COLORS );
2059 }
2060 }
2061 wow_handlers.release_icon_ptr( hObj, info );
2062 }
2063 return hObj;
2064 }
2065
2066 /******************************************************************************
2067 * DrawIconEx (USER32.@) Draws an icon or cursor on device context
2068 *
2069 * NOTES
2070 * Why is this using SM_CXICON instead of SM_CXCURSOR?
2071 *
2072 * PARAMS
2073 * hdc [I] Handle to device context
2074 * x0 [I] X coordinate of upper left corner
2075 * y0 [I] Y coordinate of upper left corner
2076 * hIcon [I] Handle to icon to draw
2077 * cxWidth [I] Width of icon
2078 * cyWidth [I] Height of icon
2079 * istep [I] Index of frame in animated cursor
2080 * hbr [I] Handle to background brush
2081 * flags [I] Icon-drawing flags
2082 *
2083 * RETURNS
2084 * Success: TRUE
2085 * Failure: FALSE
2086 */
2087 BOOL WINAPI DrawIconEx( HDC hdc, INT x0, INT y0, HICON hIcon,
2088 INT cxWidth, INT cyWidth, UINT istep,
2089 HBRUSH hbr, UINT flags )
2090 {
2091 CURSORICONINFO *ptr;
2092 HDC hDC_off = 0, hMemDC;
2093 BOOL result = FALSE, DoOffscreen;
2094 HBITMAP hB_off = 0, hOld = 0;
2095 unsigned char *xorBitmapBits;
2096 unsigned int xorLength;
2097 BOOL has_alpha = FALSE;
2098
2099 TRACE_(icon)("(hdc=%p,pos=%d.%d,hicon=%p,extend=%d.%d,istep=%d,br=%p,flags=0x%08x)\n",
2100 hdc,x0,y0,hIcon,cxWidth,cyWidth,istep,hbr,flags );
2101
2102 if (!(ptr = wow_handlers.get_icon_ptr( hIcon ))) return FALSE;
2103 if (!(hMemDC = CreateCompatibleDC( hdc )))
2104 {
2105 wow_handlers.release_icon_ptr( hIcon, ptr );
2106 return FALSE;
2107 }
2108
2109 if (istep)
2110 FIXME_(icon)("Ignoring istep=%d\n", istep);
2111 if (flags & DI_NOMIRROR)
2112 FIXME_(icon)("Ignoring flag DI_NOMIRROR\n");
2113
2114 xorLength = ptr->nHeight * get_bitmap_width_bytes(
2115 ptr->nWidth, ptr->bBitsPerPixel);
2116 xorBitmapBits = (unsigned char *)(ptr + 1) + ptr->nHeight *
2117 get_bitmap_width_bytes(ptr->nWidth, 1);
2118
2119 if (flags & DI_IMAGE)
2120 has_alpha = bitmap_has_alpha_channel(
2121 ptr->bBitsPerPixel, xorBitmapBits, xorLength);
2122
2123 /* Calculate the size of the destination image. */
2124 if (cxWidth == 0)
2125 {
2126 if (flags & DI_DEFAULTSIZE)
2127 cxWidth = GetSystemMetrics (SM_CXICON);
2128 else
2129 cxWidth = ptr->nWidth;
2130 }
2131 if (cyWidth == 0)
2132 {
2133 if (flags & DI_DEFAULTSIZE)
2134 cyWidth = GetSystemMetrics (SM_CYICON);
2135 else
2136 cyWidth = ptr->nHeight;
2137 }
2138
2139 DoOffscreen = (GetObjectType( hbr ) == OBJ_BRUSH);
2140
2141 if (DoOffscreen) {
2142 RECT r;
2143
2144 r.left = 0;
2145 r.top = 0;
2146 r.right = cxWidth;
2147 r.bottom = cxWidth;
2148
2149 hDC_off = CreateCompatibleDC(hdc);
2150 hB_off = CreateCompatibleBitmap(hdc, cxWidth, cyWidth);
2151 if (hDC_off && hB_off) {
2152 hOld = SelectObject(hDC_off, hB_off);
2153 FillRect(hDC_off, &r, hbr);
2154 }
2155 }
2156
2157 if (hMemDC && (!DoOffscreen || (hDC_off && hB_off)))
2158 {
2159 HBITMAP hBitTemp;
2160 HBITMAP hXorBits = NULL, hAndBits = NULL;
2161 COLORREF oldFg, oldBg;
2162 INT nStretchMode;
2163
2164 nStretchMode = SetStretchBltMode (hdc, STRETCH_DELETESCANS);
2165
2166 oldFg = SetTextColor( hdc, RGB(0,0,0) );
2167 oldBg = SetBkColor( hdc, RGB(255,255,255) );
2168
2169 if (((flags & DI_MASK) && !(flags & DI_IMAGE)) ||
2170 ((flags & DI_MASK) && !has_alpha))
2171 {
2172 hAndBits = CreateBitmap ( ptr->nWidth, ptr->nHeight, 1, 1, ptr + 1 );
2173 if (hAndBits)
2174 {
2175 hBitTemp = SelectObject( hMemDC, hAndBits );
2176 if (DoOffscreen)
2177 StretchBlt (hDC_off, 0, 0, cxWidth, cyWidth,
2178 hMemDC, 0, 0, ptr->nWidth, ptr->nHeight, SRCAND);
2179 else
2180 StretchBlt (hdc, x0, y0, cxWidth, cyWidth,
2181 hMemDC, 0, 0, ptr->nWidth, ptr->nHeight, SRCAND);
2182 SelectObject( hMemDC, hBitTemp );
2183 }
2184 }
2185
2186 if (flags & DI_IMAGE)
2187 {
2188 BITMAPINFOHEADER bmih;
2189 unsigned char *dibBits;
2190
2191 memset(&bmih, 0, sizeof(BITMAPINFOHEADER));
2192 bmih.biSize = sizeof(BITMAPINFOHEADER);
2193 bmih.biWidth = ptr->nWidth;
2194 bmih.biHeight = -ptr->nHeight;
2195 bmih.biPlanes = ptr->bPlanes;
2196 bmih.biBitCount = ptr->bBitsPerPixel;
2197 bmih.biCompression = BI_RGB;
2198
2199 hXorBits = CreateDIBSection(hdc, (BITMAPINFO*)&bmih, DIB_RGB_COLORS,
2200 (void*)&dibBits, NULL, 0);
2201
2202 if (hXorBits && dibBits)
2203 {
2204 if(has_alpha)
2205 {
2206 BLENDFUNCTION pixelblend = { AC_SRC_OVER, 0, 255, AC_SRC_ALPHA };
2207
2208 /* Do the alpha blending render */
2209 premultiply_alpha_channel(dibBits, xorBitmapBits, xorLength);
2210 hBitTemp = SelectObject( hMemDC, hXorBits );
2211
2212 if (DoOffscreen)
2213 GdiAlphaBlend(hDC_off, 0, 0, cxWidth, cyWidth, hMemDC,
2214 0, 0, ptr->nWidth, ptr->nHeight, pixelblend);
2215 else
2216 GdiAlphaBlend(hdc, x0, y0, cxWidth, cyWidth, hMemDC,
2217 0, 0, ptr->nWidth, ptr->nHeight, pixelblend);
2218
2219 SelectObject( hMemDC, hBitTemp );
2220 }
2221 else
2222 {
2223 memcpy(dibBits, xorBitmapBits, xorLength);
2224 hBitTemp = SelectObject( hMemDC, hXorBits );
2225 if (DoOffscreen)
2226 StretchBlt (hDC_off, 0, 0, cxWidth, cyWidth,
2227 hMemDC, 0, 0, ptr->nWidth, ptr->nHeight, SRCPAINT);
2228 else
2229 StretchBlt (hdc, x0, y0, cxWidth, cyWidth,
2230 hMemDC, 0, 0, ptr->nWidth, ptr->nHeight, SRCPAINT);
2231 SelectObject( hMemDC, hBitTemp );
2232 }
2233
2234 DeleteObject( hXorBits );
2235 }
2236 }
2237
2238 result = TRUE;
2239
2240 SetTextColor( hdc, oldFg );
2241 SetBkColor( hdc, oldBg );
2242
2243 if (hAndBits) DeleteObject( hAndBits );
2244 SetStretchBltMode (hdc, nStretchMode);
2245 if (DoOffscreen) {
2246 BitBlt(hdc, x0, y0, cxWidth, cyWidth, hDC_off, 0, 0, SRCCOPY);
2247 SelectObject(hDC_off, hOld);
2248 }
2249 }
2250 if (hMemDC) DeleteDC( hMemDC );
2251 if (hDC_off) DeleteDC(hDC_off);
2252 if (hB_off) DeleteObject(hB_off);
2253 wow_handlers.release_icon_ptr( hIcon, ptr );
2254 return result;
2255 }
2256
2257 /***********************************************************************
2258 * DIB_FixColorsToLoadflags
2259 *
2260 * Change color table entries when LR_LOADTRANSPARENT or LR_LOADMAP3DCOLORS
2261 * are in loadflags
2262 */
2263 static void DIB_FixColorsToLoadflags(BITMAPINFO * bmi, UINT loadflags, BYTE pix)
2264 {
2265 int colors;
2266 COLORREF c_W, c_S, c_F, c_L, c_C;
2267 int incr,i;
2268 RGBQUAD *ptr;
2269 int bitmap_type;
2270 LONG width;
2271 LONG height;
2272 WORD bpp;
2273 DWORD compr;
2274
2275 if (((bitmap_type = DIB_GetBitmapInfo((BITMAPINFOHEADER*) bmi, &width, &height, &bpp, &compr)) == -1))
2276 {
2277 WARN_(resource)("Invalid bitmap\n");
2278 return;
2279 }
2280
2281 if (bpp > 8) return;
2282
2283 if (bitmap_type == 0) /* BITMAPCOREHEADER */
2284 {
2285 incr = 3;
2286 colors = 1 << bpp;
2287 }
2288 else
2289 {
2290 incr = 4;
2291 colors = bmi->bmiHeader.biClrUsed;
2292 if (colors > 256) colors = 256;
2293 if (!colors && (bpp <= 8)) colors = 1 << bpp;
2294 }
2295
2296 c_W = GetSysColor(COLOR_WINDOW);
2297 c_S = GetSysColor(COLOR_3DSHADOW);
2298 c_F = GetSysColor(COLOR_3DFACE);
2299 c_L = GetSysColor(COLOR_3DLIGHT);
2300
2301 if (loadflags & LR_LOADTRANSPARENT) {
2302 switch (bpp) {
2303 case 1: pix = pix >> 7; break;
2304 case 4: pix = pix >> 4; break;
2305 case 8: break;
2306 default:
2307 WARN_(resource)("(%d): Unsupported depth\n", bpp);
2308 return;
2309 }
2310 if (pix >= colors) {
2311 WARN_(resource)("pixel has color index greater than biClrUsed!\n");
2312 return;
2313 }
2314 if (loadflags & LR_LOADMAP3DCOLORS) c_W = c_F;
2315 ptr = (RGBQUAD*)((char*)bmi->bmiColors+pix*incr);
2316 ptr->rgbBlue = GetBValue(c_W);
2317 ptr->rgbGreen = GetGValue(c_W);
2318 ptr->rgbRed = GetRValue(c_W);
2319 }
2320 if (loadflags & LR_LOADMAP3DCOLORS)
2321 for (i=0; i<colors; i++) {
2322 ptr = (RGBQUAD*)((char*)bmi->bmiColors+i*incr);
2323 c_C = RGB(ptr->rgbRed, ptr->rgbGreen, ptr->rgbBlue);
2324 if (c_C == RGB(128, 128, 128)) {
2325 ptr->rgbRed = GetRValue(c_S);
2326 ptr->rgbGreen = GetGValue(c_S);
2327 ptr->rgbBlue = GetBValue(c_S);
2328 } else if (c_C == RGB(192, 192, 192)) {
2329 ptr->rgbRed = GetRValue(c_F);
2330 ptr->rgbGreen = GetGValue(c_F);
2331 ptr->rgbBlue = GetBValue(c_F);
2332 } else if (c_C == RGB(223, 223, 223)) {
2333 ptr->rgbRed = GetRValue(c_L);
2334 ptr->rgbGreen = GetGValue(c_L);
2335 ptr->rgbBlue = GetBValue(c_L);
2336 }
2337 }
2338 }
2339
2340
2341 /**********************************************************************
2342 * BITMAP_Load
2343 */
2344 static HBITMAP BITMAP_Load( HINSTANCE instance, LPCWSTR name,
2345 INT desiredx, INT desiredy, UINT loadflags )
2346 {
2347 HBITMAP hbitmap = 0, orig_bm;
2348 HRSRC hRsrc;
2349 HGLOBAL handle;
2350 char *ptr = NULL;
2351 BITMAPINFO *info, *fix_info = NULL, *scaled_info = NULL;
2352 int size;
2353 BYTE pix;
2354 char *bits;
2355 LONG width, height, new_width, new_height;
2356 WORD bpp_dummy;
2357 DWORD compr_dummy;
2358 INT bm_type;
2359 HDC screen_mem_dc = NULL;
2360
2361 if (!(loadflags & LR_LOADFROMFILE))
2362 {
2363 if (!instance)
2364 {
2365 /* OEM bitmap: try to load the resource from user32.dll */
2366 instance = user32_module;
2367 }
2368
2369 if (!(hRsrc = FindResourceW( instance, name, (LPWSTR)RT_BITMAP ))) return 0;
2370 if (!(handle = LoadResource( instance, hRsrc ))) return 0;
2371
2372 if ((info = LockResource( handle )) == NULL) return 0;
2373 }
2374 else
2375 {
2376 BITMAPFILEHEADER * bmfh;
2377
2378 if (!(ptr = map_fileW( name, NULL ))) return 0;
2379 info = (BITMAPINFO *)(ptr + sizeof(BITMAPFILEHEADER));
2380 bmfh = (BITMAPFILEHEADER *)ptr;
2381 if (!( bmfh->bfType == 0x4d42 /* 'BM' */ &&
2382 bmfh->bfReserved1 == 0 &&
2383 bmfh->bfReserved2 == 0))
2384 {
2385 WARN("Invalid/unsupported bitmap format!\n");
2386 UnmapViewOfFile( ptr );
2387 return 0;
2388 }
2389 }
2390
2391 size = bitmap_info_size(info, DIB_RGB_COLORS);
2392 fix_info = HeapAlloc(GetProcessHeap(), 0, size);
2393 scaled_info = HeapAlloc(GetProcessHeap(), 0, size);
2394
2395 if (!fix_info || !scaled_info) goto end;
2396 memcpy(fix_info, info, size);
2397
2398 pix = *((LPBYTE)info + size);
2399 DIB_FixColorsToLoadflags(fix_info, loadflags, pix);
2400
2401 memcpy(scaled_info, fix_info, size);
2402 bm_type = DIB_GetBitmapInfo( &fix_info->bmiHeader, &width, &height,
2403 &bpp_dummy, &compr_dummy);
2404 if(desiredx != 0)
2405 new_width = desiredx;
2406 else
2407 new_width = width;
2408
2409 if(desiredy != 0)
2410 new_height = height > 0 ? desiredy : -desiredy;
2411 else
2412 new_height = height;
2413
2414 if(bm_type == 0)
2415 {
2416 BITMAPCOREHEADER *core = (BITMAPCOREHEADER *)&scaled_info->bmiHeader;
2417 core->bcWidth = new_width;
2418 core->bcHeight = new_height;
2419 }
2420 else
2421 {
2422 scaled_info->bmiHeader.biWidth = new_width;
2423 scaled_info->bmiHeader.biHeight = new_height;
2424 }
2425
2426 if (new_height < 0) new_height = -new_height;
2427
2428 if (!screen_dc) screen_dc = CreateDCW( DISPLAYW, NULL, NULL, NULL );
2429 if (!(screen_mem_dc = CreateCompatibleDC( screen_dc ))) goto end;
2430
2431 bits = (char *)info + size;
2432
2433 if (loadflags & LR_CREATEDIBSECTION)
2434 {
2435 scaled_info->bmiHeader.biCompression = 0; /* DIBSection can't be compressed */
2436 hbitmap = CreateDIBSection(screen_dc, scaled_info, DIB_RGB_COLORS, NULL, 0, 0);
2437 }
2438 else
2439 {
2440 if (is_dib_monochrome(fix_info))
2441 hbitmap = CreateBitmap(new_width, new_height, 1, 1, NULL);
2442 else
2443 hbitmap = CreateCompatibleBitmap(screen_dc, new_width, new_height);
2444 }
2445
2446 orig_bm = SelectObject(screen_mem_dc, hbitmap);
2447 StretchDIBits(screen_mem_dc, 0, 0, new_width, new_height, 0, 0, width, height, bits, fix_info, DIB_RGB_COLORS, SRCCOPY);
2448 SelectObject(screen_mem_dc, orig_bm);
2449
2450 end:
2451 if (screen_mem_dc) DeleteDC(screen_mem_dc);
2452 HeapFree(GetProcessHeap(), 0, scaled_info);
2453 HeapFree(GetProcessHeap(), 0, fix_info);
2454 if (loadflags & LR_LOADFROMFILE) UnmapViewOfFile( ptr );
2455
2456 return hbitmap;
2457 }
2458
2459 /**********************************************************************
2460 * LoadImageA (USER32.@)
2461 *
2462 * See LoadImageW.
2463 */
2464 HANDLE WINAPI LoadImageA( HINSTANCE hinst, LPCSTR name, UINT type,
2465 INT desiredx, INT desiredy, UINT loadflags)
2466 {
2467 HANDLE res;
2468 LPWSTR u_name;
2469
2470 if (!HIWORD(name))
2471 return LoadImageW(hinst, (LPCWSTR)name, type, desiredx, desiredy, loadflags);
2472
2473 __TRY {
2474 DWORD len = MultiByteToWideChar( CP_ACP, 0, name, -1, NULL, 0 );
2475 u_name = HeapAlloc( GetProcessHeap(), 0, len * sizeof(WCHAR) );
2476 MultiByteToWideChar( CP_ACP, 0, name, -1, u_name, len );
2477 }
2478 __EXCEPT_PAGE_FAULT {
2479 SetLastError( ERROR_INVALID_PARAMETER );
2480 return 0;
2481 }
2482 __ENDTRY
2483 res = LoadImageW(hinst, u_name, type, desiredx, desiredy, loadflags);
2484 HeapFree(GetProcessHeap(), 0, u_name);
2485 return res;
2486 }
2487
2488
2489 /******************************************************************************
2490 * LoadImageW (USER32.@) Loads an icon, cursor, or bitmap
2491 *
2492 * PARAMS
2493 * hinst [I] Handle of instance that contains image
2494 * name [I] Name of image
2495 * type [I] Type of image
2496 * desiredx [I] Desired width
2497 * desiredy [I] Desired height
2498 * loadflags [I] Load flags
2499 *
2500 * RETURNS
2501 * Success: Handle to newly loaded image
2502 * Failure: NULL
2503 *
2504 * FIXME: Implementation lacks some features, see LR_ defines in winuser.h
2505 */
2506 HANDLE WINAPI LoadImageW( HINSTANCE hinst, LPCWSTR name, UINT type,
2507 INT desiredx, INT desiredy, UINT loadflags )
2508 {
2509 TRACE_(resource)("(%p,%s,%d,%d,%d,0x%08x)\n",
2510 hinst,debugstr_w(name),type,desiredx,desiredy,loadflags);
2511
2512 if (loadflags & LR_DEFAULTSIZE) {
2513 if (type == IMAGE_ICON) {
2514 if (!desiredx) desiredx = GetSystemMetrics(SM_CXICON);
2515 if (!desiredy) desiredy = GetSystemMetrics(SM_CYICON);
2516 } else if (type == IMAGE_CURSOR) {
2517 if (!desiredx) desiredx = GetSystemMetrics(SM_CXCURSOR);
2518 if (!desiredy) desiredy = GetSystemMetrics(SM_CYCURSOR);
2519 }
2520 }
2521 if (loadflags & LR_LOADFROMFILE) loadflags &= ~LR_SHARED;
2522 switch (type) {
2523 case IMAGE_BITMAP:
2524 return BITMAP_Load( hinst, name, desiredx, desiredy, loadflags );
2525
2526 case IMAGE_ICON:
2527 if (!screen_dc) screen_dc = CreateDCW( DISPLAYW, NULL, NULL, NULL );
2528 if (screen_dc)
2529 {
2530 return CURSORICON_Load(hinst, name, desiredx, desiredy,
2531 GetDeviceCaps(screen_dc, BITSPIXEL),
2532 FALSE, loadflags);
2533 }
2534 break;
2535
2536 case IMAGE_CURSOR:
2537 return CURSORICON_Load(hinst, name, desiredx, desiredy,
2538 1, TRUE, loadflags);
2539 }
2540 return 0;
2541 }
2542
2543 /******************************************************************************
2544 * CopyImage (USER32.@) Creates new image and copies attributes to it
2545 *
2546 * PARAMS
2547 * hnd [I] Handle to image to copy
2548 * type [I] Type of image to copy
2549 * desiredx [I] Desired width of new image
2550 * desiredy [I] Desired height of new image
2551 * flags [I] Copy flags
2552 *
2553 * RETURNS
2554 * Success: Handle to newly created image
2555 * Failure: NULL
2556 *
2557 * BUGS
2558 * Only Windows NT 4.0 supports the LR_COPYRETURNORG flag for bitmaps,
2559 * all other versions (95/2000/XP have been tested) ignore it.
2560 *
2561 * NOTES
2562 * If LR_CREATEDIBSECTION is absent, the copy will be monochrome for
2563 * a monochrome source bitmap or if LR_MONOCHROME is present, otherwise
2564 * the copy will have the same depth as the screen.
2565 * The content of the image will only be copied if the bit depth of the
2566 * original image is compatible with the bit depth of the screen, or
2567 * if the source is a DIB section.
2568 * The LR_MONOCHROME flag is ignored if LR_CREATEDIBSECTION is present.
2569 */
2570 HANDLE WINAPI CopyImage( HANDLE hnd, UINT type, INT desiredx,
2571 INT desiredy, UINT flags )
2572 {
2573 TRACE("hnd=%p, type=%u, desiredx=%d, desiredy=%d, flags=%x\n",
2574 hnd, type, desiredx, desiredy, flags);
2575
2576 switch (type)
2577 {
2578 case IMAGE_BITMAP:
2579 {
2580 HBITMAP res = NULL;
2581 DIBSECTION ds;
2582 int objSize;
2583 BITMAPINFO * bi;
2584
2585 objSize = GetObjectW( hnd, sizeof(ds), &ds );
2586 if (!objSize) return 0;
2587 if ((desiredx < 0) || (desiredy < 0)) return 0;
2588
2589 if (flags & LR_COPYFROMRESOURCE)
2590 {
2591 FIXME("The flag LR_COPYFROMRESOURCE is not implemented for bitmaps\n");
2592 }
2593
2594 if (desiredx == 0) desiredx = ds.dsBm.bmWidth;
2595 if (desiredy == 0) desiredy = ds.dsBm.bmHeight;
2596
2597 /* Allocate memory for a BITMAPINFOHEADER structure and a
2598 color table. The maximum number of colors in a color table
2599 is 256 which corresponds to a bitmap with depth 8.
2600 Bitmaps with higher depths don't have color tables. */
2601 bi = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(BITMAPINFOHEADER) + 256 * sizeof(RGBQUAD));
2602 if (!bi) return 0;
2603
2604 bi->bmiHeader.biSize = sizeof(bi->bmiHeader);
2605 bi->bmiHeader.biPlanes = ds.dsBm.bmPlanes;
2606 bi->bmiHeader.biBitCount = ds.dsBm.bmBitsPixel;
2607 bi->bmiHeader.biCompression = BI_RGB;
2608
2609 if (flags & LR_CREATEDIBSECTION)
2610 {
2611 /* Create a DIB section. LR_MONOCHROME is ignored */
2612 void * bits;
2613 HDC dc = CreateCompatibleDC(NULL);
2614
2615 if (objSize == sizeof(DIBSECTION))
2616 {
2617 /* The source bitmap is a DIB.
2618 Get its attributes to create an exact copy */
2619 memcpy(bi, &ds.dsBmih, sizeof(BITMAPINFOHEADER));
2620 }
2621
2622 /* Get the color table or the color masks */
2623 GetDIBits(dc, hnd, 0, ds.dsBm.bmHeight, NULL, bi, DIB_RGB_COLORS);
2624
2625 bi->bmiHeader.biWidth = desiredx;
2626 bi->bmiHeader.biHeight = desiredy;
2627 bi->bmiHeader.biSizeImage = 0;
2628
2629 res = CreateDIBSection(dc, bi, DIB_RGB_COLORS, &bits, NULL, 0);
2630 DeleteDC(dc);
2631 }
2632 else
2633 {
2634 /* Create a device-dependent bitmap */
2635
2636 BOOL monochrome = (flags & LR_MONOCHROME);
2637
2638 if (objSize == sizeof(DIBSECTION))
2639 {
2640 /* The source bitmap is a DIB section.
2641 Get its attributes */
2642 HDC dc = CreateCompatibleDC(NULL);
2643 bi->bmiHeader.biSize = sizeof(bi->bmiHeader);
2644 bi->bmiHeader.biBitCount = ds.dsBm.bmBitsPixel;
2645 GetDIBits(dc, hnd, 0, ds.dsBm.bmHeight, NULL, bi, DIB_RGB_COLORS);
2646 DeleteDC(dc);
2647
2648 if (!monochrome && ds.dsBm.bmBitsPixel == 1)
2649 {
2650 /* Look if the colors of the DIB are black and white */
2651
2652 monochrome =
2653 (bi->bmiColors[0].rgbRed == 0xff
2654 && bi->bmiColors[0].rgbGreen == 0xff
2655 && bi->bmiColors[0].rgbBlue == 0xff
2656 && bi->bmiColors[0].rgbReserved == 0
2657 && bi->bmiColors[1].rgbRed == 0
2658 && bi->bmiColors[1].rgbGreen == 0
2659 && bi->bmiColors[1].rgbBlue == 0
2660 && bi->bmiColors[1].rgbReserved == 0)
2661 ||
2662 (bi->bmiColors[0].rgbRed == 0
2663 && bi->bmiColors[0].rgbGreen == 0
2664 && bi->bmiColors[0].rgbBlue == 0
2665 && bi->bmiColors[0].rgbReserved == 0
2666 && bi->bmiColors[1].rgbRed == 0xff
2667 && bi->bmiColors[1].rgbGreen == 0xff
2668 && bi->bmiColors[1].rgbBlue == 0xff
2669 && bi->bmiColors[1].rgbReserved == 0);
2670 }
2671 }
2672 else if (!monochrome)
2673 {
2674 monochrome = ds.dsBm.bmBitsPixel == 1;
2675 }
2676
2677 if (monochrome)
2678 {
2679 res = CreateBitmap(desiredx, desiredy, 1, 1, NULL);
2680 }
2681 else
2682 {
2683 HDC screenDC = GetDC(NULL);
2684 res = CreateCompatibleBitmap(screenDC, desiredx, desiredy);
2685 ReleaseDC(NULL, screenDC);
2686 }
2687 }
2688
2689 if (res)
2690 {
2691 /* Only copy the bitmap if it's a DIB section or if it's
2692 compatible to the screen */
2693 BOOL copyContents;
2694
2695 if (objSize == sizeof(DIBSECTION))
2696 {
2697 copyContents = TRUE;
2698 }
2699 else
2700 {
2701 HDC screenDC = GetDC(NULL);
2702 int screen_depth = GetDeviceCaps(screenDC, BITSPIXEL);
2703 ReleaseDC(NULL, screenDC);
2704
2705 copyContents = (ds.dsBm.bmBitsPixel == 1 || ds.dsBm.bmBitsPixel == screen_depth);
2706 }
2707
2708 if (copyContents)
2709 {
2710 /* The source bitmap may already be selected in a device context,
2711 use GetDIBits/StretchDIBits and not StretchBlt */
2712
2713 HDC dc;
2714 void * bits;
2715
2716 dc = CreateCompatibleDC(NULL);
2717
2718 bi->bmiHeader.biWidth = ds.dsBm.bmWidth;
2719 bi->bmiHeader.biHeight = ds.dsBm.bmHeight;
2720 bi->bmiHeader.biSizeImage = 0;
2721 bi->bmiHeader.biClrUsed = 0;
2722 bi->bmiHeader.biClrImportant = 0;
2723
2724 /* Fill in biSizeImage */
2725 GetDIBits(dc, hnd, 0, ds.dsBm.bmHeight, NULL, bi, DIB_RGB_COLORS);
2726 bits = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, bi->bmiHeader.biSizeImage);
2727
2728 if (bits)
2729 {
2730 HBITMAP oldBmp;
2731
2732 /* Get the image bits of the source bitmap */
2733 GetDIBits(dc, hnd, 0, ds.dsBm.bmHeight, bits, bi, DIB_RGB_COLORS);
2734
2735 /* Copy it to the destination bitmap */
2736 oldBmp = SelectObject(dc, res);
2737 StretchDIBits(dc, 0, 0, desiredx, desiredy,
2738 0, 0, ds.dsBm.bmWidth, ds.dsBm.bmHeight,
2739 bits, bi, DIB_RGB_COLORS, SRCCOPY);
2740 SelectObject(dc, oldBmp);
2741
2742 HeapFree(GetProcessHeap(), 0, bits);
2743 }
2744
2745 DeleteDC(dc);
2746 }
2747
2748 if (flags & LR_COPYDELETEORG)
2749 {
2750 DeleteObject(hnd);
2751 }
2752 }
2753 HeapFree(GetProcessHeap(), 0, bi);
2754 return res;
2755 }
2756 case IMAGE_ICON:
2757 return CURSORICON_ExtCopy(hnd,type, desiredx, desiredy, flags);
2758 case IMAGE_CURSOR:
2759 /* Should call CURSORICON_ExtCopy but more testing
2760 * needs to be done before we change this
2761 */
2762 if (flags) FIXME("Flags are ignored\n");
2763 return CopyCursor(hnd);
2764 }
2765 return 0;
2766 }
2767
2768
2769 /******************************************************************************
2770 * LoadBitmapW (USER32.@) Loads bitmap from the executable file
2771 *
2772 * RETURNS
2773 * Success: Handle to specified bitmap
2774 * Failure: NULL
2775 */
2776 HBITMAP WINAPI LoadBitmapW(
2777 HINSTANCE instance, /* [in] Handle to application instance */
2778 LPCWSTR name) /* [in] Address of bitmap resource name */
2779 {
2780 return LoadImageW( instance, name, IMAGE_BITMAP, 0, 0, 0 );
2781 }
2782
2783 /**********************************************************************
2784 * LoadBitmapA (USER32.@)
2785 *
2786 * See LoadBitmapW.
2787 */
2788 HBITMAP WINAPI LoadBitmapA( HINSTANCE instance, LPCSTR name )
2789 {
2790 return LoadImageA( instance, name, IMAGE_BITMAP, 0, 0, 0 );
2791 }
GSOC 2012 project to enhance the control panel