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user32: Check for NULL pointer in ToUnicodeEx.
[wine/multimedia.git] / dlls / gdi32 / gdi_private.h
blob430e65281daba00bb0786ff9bbf4178464db5cc5
1 /*
2 * GDI definitions
3 *
4 * Copyright 1993 Alexandre Julliard
5 *
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
10 *
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
19 */
20
21 #ifndef __WINE_GDI_PRIVATE_H
22 #define __WINE_GDI_PRIVATE_H
23
24 #include <limits.h>
25 #include <math.h>
26 #include <stdlib.h>
27 #include <stdarg.h>
28 #include "windef.h"
29 #include "winbase.h"
30 #include "wingdi.h"
31 #include "wine/gdi_driver.h"
32
33 /* Metafile defines */
34 #define META_EOF 0x0000
35 /* values of mtType in METAHEADER. Note however that the disk image of a disk
36 based metafile has mtType == 1 */
37 #define METAFILE_MEMORY 1
38 #define METAFILE_DISK 2
39 #define MFHEADERSIZE (sizeof(METAHEADER))
40 #define MFVERSION 0x300
41
42 typedef struct {
43 EMR emr;
44 INT nBreakExtra;
45 INT nBreakCount;
46 } EMRSETTEXTJUSTIFICATION, *PEMRSETTEXTJUSTIFICATION;
47
48 /* extra stock object: default 1x1 bitmap for memory DCs */
49 #define DEFAULT_BITMAP (STOCK_LAST+1)
50
51 struct gdi_obj_funcs
52 {
53 HGDIOBJ (*pSelectObject)( HGDIOBJ handle, HDC hdc );
54 INT (*pGetObjectA)( HGDIOBJ handle, INT count, LPVOID buffer );
55 INT (*pGetObjectW)( HGDIOBJ handle, INT count, LPVOID buffer );
56 BOOL (*pUnrealizeObject)( HGDIOBJ handle );
57 BOOL (*pDeleteObject)( HGDIOBJ handle );
58 };
59
60 typedef struct tagDC
61 {
62 HDC hSelf; /* Handle to this DC */
63 struct gdi_physdev nulldrv; /* physdev for the null driver */
64 PHYSDEV physDev; /* current top of the physdev stack */
65 DWORD thread; /* thread owning the DC */
66 LONG refcount; /* thread refcount */
67 LONG dirty; /* dirty flag */
68 INT saveLevel;
69 struct tagDC *saved_dc;
70 DWORD_PTR dwHookData;
71 DCHOOKPROC hookProc; /* DC hook */
72 BOOL bounds_enabled:1; /* bounds tracking is enabled */
73 BOOL path_open:1; /* path is currently open (only for saved DCs) */
74
75 INT wndOrgX; /* Window origin */
76 INT wndOrgY;
77 INT wndExtX; /* Window extent */
78 INT wndExtY;
79 INT vportOrgX; /* Viewport origin */
80 INT vportOrgY;
81 INT vportExtX; /* Viewport extent */
82 INT vportExtY;
83 SIZE virtual_res; /* Initially HORZRES,VERTRES. Changed by SetVirtualResolution */
84 SIZE virtual_size; /* Initially HORZSIZE,VERTSIZE. Changed by SetVirtualResolution */
85 RECT vis_rect; /* visible rectangle in screen coords */
86 RECT device_rect; /* rectangle for the whole device */
87 int pixel_format; /* pixel format (for memory DCs) */
88 UINT aa_flags; /* anti-aliasing flags to pass to GetGlyphOutline for current font */
89 FLOAT miterLimit;
90
91 int flags;
92 DWORD layout;
93 HRGN hClipRgn; /* Clip region */
94 HRGN hMetaRgn; /* Meta region */
95 HRGN hVisRgn; /* Visible region */
96 HRGN region; /* Total DC region (intersection of clip and visible) */
97 HPEN hPen;
98 HBRUSH hBrush;
99 HFONT hFont;
100 HBITMAP hBitmap;
101 HPALETTE hPalette;
102
103 struct gdi_path *path;
104
105 UINT font_code_page;
106 WORD ROPmode;
107 WORD polyFillMode;
108 WORD stretchBltMode;
109 WORD relAbsMode;
110 WORD backgroundMode;
111 COLORREF backgroundColor;
112 COLORREF textColor;
113 COLORREF dcBrushColor;
114 COLORREF dcPenColor;
115 short brushOrgX;
116 short brushOrgY;
117
118 DWORD mapperFlags; /* Font mapper flags */
119 WORD textAlign; /* Text alignment from SetTextAlign() */
120 INT charExtra; /* Spacing from SetTextCharacterExtra() */
121 INT breakExtra; /* breakTotalExtra / breakCount */
122 INT breakRem; /* breakTotalExtra % breakCount */
123 INT MapMode;
124 INT GraphicsMode; /* Graphics mode */
125 ABORTPROC pAbortProc; /* AbortProc for Printing */
126 INT CursPosX; /* Current position */
127 INT CursPosY;
128 INT ArcDirection;
129 XFORM xformWorld2Wnd; /* World-to-window transformation */
130 XFORM xformWorld2Vport; /* World-to-viewport transformation */
131 XFORM xformVport2World; /* Inverse of the above transformation */
132 BOOL vport2WorldValid; /* Is xformVport2World valid? */
133 RECT bounds; /* Current bounding rect */
134 } DC;
135
136 /* Certain functions will do no further processing if the driver returns this.
137 Used by mfdrv for example. */
138 #define GDI_NO_MORE_WORK 2
139
140 /* Rounds a floating point number to integer. The world-to-viewport
141 * transformation process is done in floating point internally. This function
142 * is then used to round these coordinates to integer values.
143 */
144 static inline INT GDI_ROUND(double val)
145 {
146 return (int)floor(val + 0.5);
147 }
148
149 #define GET_DC_PHYSDEV(dc,func) \
150 get_physdev_entry_point( (dc)->physDev, FIELD_OFFSET(struct gdi_dc_funcs,func))
151
152 static inline PHYSDEV pop_dc_driver( DC *dc, const struct gdi_dc_funcs *funcs )
153 {
154 PHYSDEV dev, *pdev = &dc->physDev;
155 while (*pdev && (*pdev)->funcs != funcs) pdev = &(*pdev)->next;
156 if (!*pdev) return NULL;
157 dev = *pdev;
158 *pdev = dev->next;
159 return dev;
160 }
161
162 static inline PHYSDEV find_dc_driver( DC *dc, const struct gdi_dc_funcs *funcs )
163 {
164 PHYSDEV dev;
165
166 for (dev = dc->physDev; dev; dev = dev->next) if (dev->funcs == funcs) return dev;
167 return NULL;
168 }
169
170 /* bitmap object */
171
172 typedef struct tagBITMAPOBJ
173 {
174 DIBSECTION dib;
175 SIZE size; /* For SetBitmapDimension() */
176 RGBQUAD *color_table; /* DIB color table if <= 8bpp (always 1 << bpp in size) */
177 } BITMAPOBJ;
178
179 static inline BOOL is_bitmapobj_dib( const BITMAPOBJ *bmp )
180 {
181 return bmp->dib.dsBmih.biSize != 0;
182 }
183
184 /* bidi.c */
185
186 /* Wine_GCPW Flags */
187 /* Directionality -
188 * LOOSE means taking the directionality of the first strong character, if there is found one.
189 * FORCE means the paragraph direction is forced. (RLE/LRE)
190 */
191 #define WINE_GCPW_FORCE_LTR 0
192 #define WINE_GCPW_FORCE_RTL 1
193 #define WINE_GCPW_LOOSE_LTR 2
194 #define WINE_GCPW_LOOSE_RTL 3
195 #define WINE_GCPW_DIR_MASK 3
196 #define WINE_GCPW_LOOSE_MASK 2
197
198 extern BOOL BIDI_Reorder( HDC hDC, LPCWSTR lpString, INT uCount, DWORD dwFlags, DWORD dwWineGCP_Flags,
199 LPWSTR lpOutString, INT uCountOut, UINT *lpOrder, WORD **lpGlyphs, INT* cGlyphs ) DECLSPEC_HIDDEN;
200
201 /* bitblt.c */
202 extern DWORD convert_bits( const BITMAPINFO *src_info, struct bitblt_coords *src,
203 BITMAPINFO *dst_info, struct gdi_image_bits *bits ) DECLSPEC_HIDDEN;
204 extern BOOL intersect_vis_rectangles( struct bitblt_coords *dst, struct bitblt_coords *src ) DECLSPEC_HIDDEN;
205 extern DWORD stretch_bits( const BITMAPINFO *src_info, struct bitblt_coords *src,
206 BITMAPINFO *dst_info, struct bitblt_coords *dst,
207 struct gdi_image_bits *bits, int mode ) DECLSPEC_HIDDEN;
208
209 /* brush.c */
210 extern BOOL store_brush_pattern( LOGBRUSH *brush, struct brush_pattern *pattern ) DECLSPEC_HIDDEN;
211 extern void free_brush_pattern( struct brush_pattern *pattern ) DECLSPEC_HIDDEN;
212 extern BOOL get_brush_bitmap_info( HBRUSH handle, BITMAPINFO *info, void **bits, UINT *usage ) DECLSPEC_HIDDEN;
213
214 /* clipping.c */
215 extern BOOL clip_device_rect( DC *dc, RECT *dst, const RECT *src ) DECLSPEC_HIDDEN;
216 extern BOOL clip_visrect( DC *dc, RECT *dst, const RECT *src ) DECLSPEC_HIDDEN;
217 extern void update_dc_clipping( DC * dc ) DECLSPEC_HIDDEN;
218
219 /* Return the total DC region (if any) */
220 static inline HRGN get_dc_region( DC *dc )
221 {
222 if (dc->region) return dc->region;
223 if (dc->hVisRgn) return dc->hVisRgn;
224 if (dc->hClipRgn) return dc->hClipRgn;
225 return dc->hMetaRgn;
226 }
227
228 /* dc.c */
229 extern DC *alloc_dc_ptr( WORD magic ) DECLSPEC_HIDDEN;
230 extern void free_dc_ptr( DC *dc ) DECLSPEC_HIDDEN;
231 extern DC *get_dc_ptr( HDC hdc ) DECLSPEC_HIDDEN;
232 extern void release_dc_ptr( DC *dc ) DECLSPEC_HIDDEN;
233 extern void update_dc( DC *dc ) DECLSPEC_HIDDEN;
234 extern void DC_InitDC( DC * dc ) DECLSPEC_HIDDEN;
235 extern void DC_UpdateXforms( DC * dc ) DECLSPEC_HIDDEN;
236
237 /* dib.c */
238 extern int bitmap_info_size( const BITMAPINFO * info, WORD coloruse ) DECLSPEC_HIDDEN;
239 extern BOOL fill_color_table_from_pal_colors( BITMAPINFO *info, HDC hdc ) DECLSPEC_HIDDEN;
240 extern const RGBQUAD *get_default_color_table( int bpp ) DECLSPEC_HIDDEN;
241 extern void fill_default_color_table( BITMAPINFO *info ) DECLSPEC_HIDDEN;
242 extern void get_ddb_bitmapinfo( BITMAPOBJ *bmp, BITMAPINFO *info ) DECLSPEC_HIDDEN;
243 extern BITMAPINFO *copy_packed_dib( const BITMAPINFO *src_info, UINT usage ) DECLSPEC_HIDDEN;
244 extern DWORD convert_bitmapinfo( const BITMAPINFO *src_info, void *src_bits, struct bitblt_coords *src,
245 const BITMAPINFO *dst_info, void *dst_bits ) DECLSPEC_HIDDEN;
246
247 extern DWORD stretch_bitmapinfo( const BITMAPINFO *src_info, void *src_bits, struct bitblt_coords *src,
248 const BITMAPINFO *dst_info, void *dst_bits, struct bitblt_coords *dst,
249 INT mode ) DECLSPEC_HIDDEN;
250 extern DWORD blend_bitmapinfo( const BITMAPINFO *src_info, void *src_bits, struct bitblt_coords *src,
251 const BITMAPINFO *dst_info, void *dst_bits, struct bitblt_coords *dst,
252 BLENDFUNCTION blend ) DECLSPEC_HIDDEN;
253 extern DWORD gradient_bitmapinfo( const BITMAPINFO *info, void *bits, TRIVERTEX *vert_array, ULONG nvert,
254 void *grad_array, ULONG ngrad, ULONG mode, const POINT *dev_pts, HRGN rgn ) DECLSPEC_HIDDEN;
255 extern COLORREF get_pixel_bitmapinfo( const BITMAPINFO *info, void *bits, struct bitblt_coords *src ) DECLSPEC_HIDDEN;
256 extern BOOL render_aa_text_bitmapinfo( HDC hdc, BITMAPINFO *info, struct gdi_image_bits *bits,
257 struct bitblt_coords *src, INT x, INT y, UINT flags,
258 UINT aa_flags, LPCWSTR str, UINT count, const INT *dx ) DECLSPEC_HIDDEN;
259 extern DWORD get_image_from_bitmap( BITMAPOBJ *bmp, BITMAPINFO *info,
260 struct gdi_image_bits *bits, struct bitblt_coords *src ) DECLSPEC_HIDDEN;
261 extern DWORD put_image_into_bitmap( BITMAPOBJ *bmp, HRGN clip, BITMAPINFO *info,
262 const struct gdi_image_bits *bits, struct bitblt_coords *src,
263 struct bitblt_coords *dst ) DECLSPEC_HIDDEN;
264 extern void dibdrv_set_window_surface( DC *dc, struct window_surface *surface ) DECLSPEC_HIDDEN;
265
266 /* driver.c */
267 extern const struct gdi_dc_funcs null_driver DECLSPEC_HIDDEN;
268 extern const struct gdi_dc_funcs dib_driver DECLSPEC_HIDDEN;
269 extern const struct gdi_dc_funcs path_driver DECLSPEC_HIDDEN;
270 extern const struct gdi_dc_funcs *font_driver DECLSPEC_HIDDEN;
271 extern const struct gdi_dc_funcs *DRIVER_load_driver( LPCWSTR name ) DECLSPEC_HIDDEN;
272 extern BOOL DRIVER_GetDriverName( LPCWSTR device, LPWSTR driver, DWORD size ) DECLSPEC_HIDDEN;
273
274 /* enhmetafile.c */
275 extern HENHMETAFILE EMF_Create_HENHMETAFILE(ENHMETAHEADER *emh, BOOL on_disk ) DECLSPEC_HIDDEN;
276
277 /* freetype.c */
278
279 /* Undocumented structure filled in by GdiRealizationInfo */
280 typedef struct
281 {
282 DWORD flags; /* 1 for bitmap fonts, 3 for scalable fonts */
283 DWORD cache_num; /* keeps incrementing - num of fonts that have been created allowing for caching?? */
284 DWORD unknown2; /* fixed for a given font - looks like it could be the order of the face in the font list or the order
285 in which the face was first rendered. */
286 } realization_info_t;
287
288
289 extern INT WineEngAddFontResourceEx(LPCWSTR, DWORD, PVOID) DECLSPEC_HIDDEN;
290 extern HANDLE WineEngAddFontMemResourceEx(PVOID, DWORD, PVOID, LPDWORD) DECLSPEC_HIDDEN;
291 extern BOOL WineEngCreateScalableFontResource(DWORD, LPCWSTR, LPCWSTR, LPCWSTR) DECLSPEC_HIDDEN;
292 extern BOOL WineEngInit(void) DECLSPEC_HIDDEN;
293 extern BOOL WineEngRemoveFontResourceEx(LPCWSTR, DWORD, PVOID) DECLSPEC_HIDDEN;
294
295 /* gdiobj.c */
296 extern HGDIOBJ alloc_gdi_handle( void *obj, WORD type, const struct gdi_obj_funcs *funcs ) DECLSPEC_HIDDEN;
297 extern void *free_gdi_handle( HGDIOBJ handle ) DECLSPEC_HIDDEN;
298 extern HGDIOBJ get_full_gdi_handle( HGDIOBJ handle ) DECLSPEC_HIDDEN;
299 extern void *GDI_GetObjPtr( HGDIOBJ, WORD ) DECLSPEC_HIDDEN;
300 extern void GDI_ReleaseObj( HGDIOBJ ) DECLSPEC_HIDDEN;
301 extern void GDI_CheckNotLock(void) DECLSPEC_HIDDEN;
302 extern UINT GDI_get_ref_count( HGDIOBJ handle ) DECLSPEC_HIDDEN;
303 extern HGDIOBJ GDI_inc_ref_count( HGDIOBJ handle ) DECLSPEC_HIDDEN;
304 extern BOOL GDI_dec_ref_count( HGDIOBJ handle ) DECLSPEC_HIDDEN;
305 extern void GDI_hdc_using_object(HGDIOBJ obj, HDC hdc) DECLSPEC_HIDDEN;
306 extern void GDI_hdc_not_using_object(HGDIOBJ obj, HDC hdc) DECLSPEC_HIDDEN;
307
308 /* metafile.c */
309 extern HMETAFILE MF_Create_HMETAFILE(METAHEADER *mh) DECLSPEC_HIDDEN;
310 extern METAHEADER *MF_CreateMetaHeaderDisk(METAHEADER *mr, LPCVOID filename, BOOL unicode ) DECLSPEC_HIDDEN;
311
312 /* path.c */
313
314 extern void free_gdi_path( struct gdi_path *path ) DECLSPEC_HIDDEN;
315 extern BOOL PATH_SavePath( DC *dst, DC *src ) DECLSPEC_HIDDEN;
316 extern BOOL PATH_RestorePath( DC *dst, DC *src ) DECLSPEC_HIDDEN;
317
318 /* painting.c */
319 extern POINT *GDI_Bezier( const POINT *Points, INT count, INT *nPtsOut ) DECLSPEC_HIDDEN;
320
321 /* palette.c */
322 extern HPALETTE WINAPI GDISelectPalette( HDC hdc, HPALETTE hpal, WORD wBkg) DECLSPEC_HIDDEN;
323 extern UINT WINAPI GDIRealizePalette( HDC hdc ) DECLSPEC_HIDDEN;
324 extern HPALETTE PALETTE_Init(void) DECLSPEC_HIDDEN;
325
326 /* region.c */
327 extern BOOL add_rect_to_region( HRGN rgn, const RECT *rect ) DECLSPEC_HIDDEN;
328 extern INT mirror_region( HRGN dst, HRGN src, INT width ) DECLSPEC_HIDDEN;
329 extern BOOL REGION_FrameRgn( HRGN dest, HRGN src, INT x, INT y ) DECLSPEC_HIDDEN;
330
331 typedef struct
332 {
333 INT size;
334 INT numRects;
335 RECT *rects;
336 RECT extents;
337 } WINEREGION;
338
339 /* return the region data without making a copy */
340 static inline const WINEREGION *get_wine_region(HRGN rgn)
341 {
342 return GDI_GetObjPtr( rgn, OBJ_REGION );
343 }
344 static inline void release_wine_region(HRGN rgn)
345 {
346 GDI_ReleaseObj(rgn);
347 }
348
349 /* null driver entry points */
350 extern BOOL nulldrv_AbortPath( PHYSDEV dev ) DECLSPEC_HIDDEN;
351 extern BOOL nulldrv_AlphaBlend( PHYSDEV dst_dev, struct bitblt_coords *dst,
352 PHYSDEV src_dev, struct bitblt_coords *src, BLENDFUNCTION func) DECLSPEC_HIDDEN;
353 extern BOOL nulldrv_AngleArc( PHYSDEV dev, INT x, INT y, DWORD radius, FLOAT start, FLOAT sweep ) DECLSPEC_HIDDEN;
354 extern BOOL nulldrv_ArcTo( PHYSDEV dev, INT left, INT top, INT right, INT bottom, INT xstart, INT ystart, INT xend, INT yend ) DECLSPEC_HIDDEN;
355 extern BOOL nulldrv_BeginPath( PHYSDEV dev ) DECLSPEC_HIDDEN;
356 extern DWORD nulldrv_BlendImage( PHYSDEV dev, BITMAPINFO *info, const struct gdi_image_bits *bits,
357 struct bitblt_coords *src, struct bitblt_coords *dst, BLENDFUNCTION func ) DECLSPEC_HIDDEN;
358 extern BOOL nulldrv_CloseFigure( PHYSDEV dev ) DECLSPEC_HIDDEN;
359 extern BOOL nulldrv_EndPath( PHYSDEV dev ) DECLSPEC_HIDDEN;
360 extern INT nulldrv_ExcludeClipRect( PHYSDEV dev, INT left, INT top, INT right, INT bottom ) DECLSPEC_HIDDEN;
361 extern INT nulldrv_ExtSelectClipRgn( PHYSDEV dev, HRGN rgn, INT mode ) DECLSPEC_HIDDEN;
362 extern BOOL nulldrv_ExtTextOut( PHYSDEV dev, INT x, INT y, UINT flags, const RECT *rect,
363 LPCWSTR str, UINT count, const INT *dx ) DECLSPEC_HIDDEN;
364 extern BOOL nulldrv_FillPath( PHYSDEV dev ) DECLSPEC_HIDDEN;
365 extern BOOL nulldrv_FillRgn( PHYSDEV dev, HRGN rgn, HBRUSH brush ) DECLSPEC_HIDDEN;
366 extern BOOL nulldrv_FlattenPath( PHYSDEV dev ) DECLSPEC_HIDDEN;
367 extern BOOL nulldrv_FrameRgn( PHYSDEV dev, HRGN rgn, HBRUSH brush, INT width, INT height ) DECLSPEC_HIDDEN;
368 extern LONG nulldrv_GetBitmapBits( HBITMAP bitmap, void *bits, LONG size ) DECLSPEC_HIDDEN;
369 extern COLORREF nulldrv_GetNearestColor( PHYSDEV dev, COLORREF color ) DECLSPEC_HIDDEN;
370 extern COLORREF nulldrv_GetPixel( PHYSDEV dev, INT x, INT y ) DECLSPEC_HIDDEN;
371 extern BOOL nulldrv_GradientFill( PHYSDEV dev, TRIVERTEX *vert_array, ULONG nvert,
372 void * grad_array, ULONG ngrad, ULONG mode ) DECLSPEC_HIDDEN;
373 extern INT nulldrv_IntersectClipRect( PHYSDEV dev, INT left, INT top, INT right, INT bottom ) DECLSPEC_HIDDEN;
374 extern BOOL nulldrv_InvertRgn( PHYSDEV dev, HRGN rgn ) DECLSPEC_HIDDEN;
375 extern BOOL nulldrv_ModifyWorldTransform( PHYSDEV dev, const XFORM *xform, DWORD mode ) DECLSPEC_HIDDEN;
376 extern INT nulldrv_OffsetClipRgn( PHYSDEV dev, INT x, INT y ) DECLSPEC_HIDDEN;
377 extern BOOL nulldrv_OffsetViewportOrgEx( PHYSDEV dev, INT x, INT y, POINT *pt ) DECLSPEC_HIDDEN;
378 extern BOOL nulldrv_OffsetWindowOrgEx( PHYSDEV dev, INT x, INT y, POINT *pt ) DECLSPEC_HIDDEN;
379 extern BOOL nulldrv_PolyBezier( PHYSDEV dev, const POINT *points, DWORD count ) DECLSPEC_HIDDEN;
380 extern BOOL nulldrv_PolyBezierTo( PHYSDEV dev, const POINT *points, DWORD count ) DECLSPEC_HIDDEN;
381 extern BOOL nulldrv_PolyDraw( PHYSDEV dev, const POINT *points, const BYTE *types, DWORD count ) DECLSPEC_HIDDEN;
382 extern BOOL nulldrv_PolylineTo( PHYSDEV dev, const POINT *points, INT count ) DECLSPEC_HIDDEN;
383 extern BOOL nulldrv_RestoreDC( PHYSDEV dev, INT level ) DECLSPEC_HIDDEN;
384 extern INT nulldrv_SaveDC( PHYSDEV dev ) DECLSPEC_HIDDEN;
385 extern BOOL nulldrv_ScaleViewportExtEx( PHYSDEV dev, INT x_num, INT x_denom, INT y_num, INT y_denom, SIZE *size ) DECLSPEC_HIDDEN;
386 extern BOOL nulldrv_ScaleWindowExtEx( PHYSDEV dev, INT x_num, INT x_denom, INT y_num, INT y_denom, SIZE *size ) DECLSPEC_HIDDEN;
387 extern BOOL nulldrv_SelectClipPath( PHYSDEV dev, INT mode ) DECLSPEC_HIDDEN;
388 extern HFONT nulldrv_SelectFont( PHYSDEV dev, HFONT font, UINT *ggo_flags ) DECLSPEC_HIDDEN;
389 extern INT nulldrv_SetDIBitsToDevice( PHYSDEV dev, INT x_dst, INT y_dst, DWORD width, DWORD height,
390 INT x_src, INT y_src, UINT start, UINT lines,
391 const void *bits, BITMAPINFO *info, UINT coloruse ) DECLSPEC_HIDDEN;
392 extern INT nulldrv_SetMapMode( PHYSDEV dev, INT mode ) DECLSPEC_HIDDEN;
393 extern BOOL nulldrv_SetViewportExtEx( PHYSDEV dev, INT cx, INT cy, SIZE *size ) DECLSPEC_HIDDEN;
394 extern BOOL nulldrv_SetViewportOrgEx( PHYSDEV dev, INT x, INT y, POINT *pt ) DECLSPEC_HIDDEN;
395 extern BOOL nulldrv_SetWindowExtEx( PHYSDEV dev, INT cx, INT cy, SIZE *size ) DECLSPEC_HIDDEN;
396 extern BOOL nulldrv_SetWindowOrgEx( PHYSDEV dev, INT x, INT y, POINT *pt ) DECLSPEC_HIDDEN;
397 extern BOOL nulldrv_SetWorldTransform( PHYSDEV dev, const XFORM *xform ) DECLSPEC_HIDDEN;
398 extern BOOL nulldrv_StretchBlt( PHYSDEV dst_dev, struct bitblt_coords *dst,
399 PHYSDEV src_dev, struct bitblt_coords *src, DWORD rop ) DECLSPEC_HIDDEN;
400 extern INT nulldrv_StretchDIBits( PHYSDEV dev, INT xDst, INT yDst, INT widthDst, INT heightDst,
401 INT xSrc, INT ySrc, INT widthSrc, INT heightSrc, const void *bits,
402 BITMAPINFO *info, UINT coloruse, DWORD rop ) DECLSPEC_HIDDEN;
403 extern BOOL nulldrv_StrokeAndFillPath( PHYSDEV dev ) DECLSPEC_HIDDEN;
404 extern BOOL nulldrv_StrokePath( PHYSDEV dev ) DECLSPEC_HIDDEN;
405 extern BOOL nulldrv_WidenPath( PHYSDEV dev ) DECLSPEC_HIDDEN;
406
407 static inline DC *get_nulldrv_dc( PHYSDEV dev )
408 {
409 return CONTAINING_RECORD( dev, DC, nulldrv );
410 }
411
412 /* Undocumented value for DIB's iUsage: Indicates a mono DIB w/o pal entries */
413 #define DIB_PAL_MONO 2
414
415 BOOL WINAPI FontIsLinked(HDC);
416
417 BOOL WINAPI SetVirtualResolution(HDC hdc, DWORD horz_res, DWORD vert_res, DWORD horz_size, DWORD vert_size);
418
419 static inline BOOL is_rect_empty( const RECT *rect )
420 {
421 return (rect->left >= rect->right || rect->top >= rect->bottom);
422 }
423
424 static inline BOOL intersect_rect( RECT *dst, const RECT *src1, const RECT *src2 )
425 {
426 dst->left = max( src1->left, src2->left );
427 dst->top = max( src1->top, src2->top );
428 dst->right = min( src1->right, src2->right );
429 dst->bottom = min( src1->bottom, src2->bottom );
430 return !is_rect_empty( dst );
431 }
432
433 static inline void offset_rect( RECT *rect, int offset_x, int offset_y )
434 {
435 rect->left += offset_x;
436 rect->top += offset_y;
437 rect->right += offset_x;
438 rect->bottom += offset_y;
439 }
440
441 static inline void order_rect( RECT *rect )
442 {
443 if (rect->left > rect->right)
444 {
445 int tmp = rect->left;
446 rect->left = rect->right;
447 rect->right = tmp;
448 }
449 if (rect->top > rect->bottom)
450 {
451 int tmp = rect->top;
452 rect->top = rect->bottom;
453 rect->bottom = tmp;
454 }
455 }
456
457 static inline void get_bounding_rect( RECT *rect, int x, int y, int width, int height )
458 {
459 rect->left = x;
460 rect->right = x + width;
461 rect->top = y;
462 rect->bottom = y + height;
463 if (rect->left > rect->right)
464 {
465 int tmp = rect->left;
466 rect->left = rect->right + 1;
467 rect->right = tmp + 1;
468 }
469 if (rect->top > rect->bottom)
470 {
471 int tmp = rect->top;
472 rect->top = rect->bottom + 1;
473 rect->bottom = tmp + 1;
474 }
475 }
476
477 static inline void reset_bounds( RECT *bounds )
478 {
479 bounds->left = bounds->top = INT_MAX;
480 bounds->right = bounds->bottom = INT_MIN;
481 }
482
483 static inline void add_bounds_rect( RECT *bounds, const RECT *rect )
484 {
485 if (is_rect_empty( rect )) return;
486 bounds->left = min( bounds->left, rect->left );
487 bounds->top = min( bounds->top, rect->top );
488 bounds->right = max( bounds->right, rect->right );
489 bounds->bottom = max( bounds->bottom, rect->bottom );
490 }
491
492 static inline int get_bitmap_stride( int width, int bpp )
493 {
494 return ((width * bpp + 15) >> 3) & ~1;
495 }
496
497 static inline int get_dib_stride( int width, int bpp )
498 {
499 return ((width * bpp + 31) >> 3) & ~3;
500 }
501
502 static inline int get_dib_image_size( const BITMAPINFO *info )
503 {
504 return get_dib_stride( info->bmiHeader.biWidth, info->bmiHeader.biBitCount )
505 * abs( info->bmiHeader.biHeight );
506 }
507
508 /* only for use on sanitized BITMAPINFO structures */
509 static inline int get_dib_info_size( const BITMAPINFO *info, UINT coloruse )
510 {
511 if (info->bmiHeader.biCompression == BI_BITFIELDS)
512 return sizeof(BITMAPINFOHEADER) + 3 * sizeof(DWORD);
513 if (coloruse == DIB_PAL_COLORS)
514 return sizeof(BITMAPINFOHEADER) + info->bmiHeader.biClrUsed * sizeof(WORD);
515 return FIELD_OFFSET( BITMAPINFO, bmiColors[info->bmiHeader.biClrUsed] );
516 }
517
518 /* only for use on sanitized BITMAPINFO structures */
519 static inline void copy_bitmapinfo( BITMAPINFO *dst, const BITMAPINFO *src )
520 {
521 memcpy( dst, src, get_dib_info_size( src, DIB_RGB_COLORS ));
522 }
523
524 extern void free_heap_bits( struct gdi_image_bits *bits ) DECLSPEC_HIDDEN;
525
526 extern HMODULE gdi32_module DECLSPEC_HIDDEN;
527
528 #endif /* __WINE_GDI_PRIVATE_H */
Maarten's multimedia branch