dll/win32/gdiplus/gdiplus_private.h

   1 /*
   2  * Copyright (C) 2007 Google (Evan Stade)
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2.1 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with this library; if not, write to the Free Software
  16  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  17  */
  18
  19 #ifndef __WINE_GP_PRIVATE_H_
  20 #define __WINE_GP_PRIVATE_H_
  21
  22 #include <math.h>
  23 #include <stdarg.h>
  24
  25 #define WIN32_NO_STATUS
  26 #define _INC_WINDOWS
  27 #define COM_NO_WINDOWS_H
  28
  29 #define NONAMELESSUNION
  30 #define COBJMACROS
  31
  32 #include <windef.h>
  33 #include <winbase.h>
  34 #include <wingdi.h>
  35 #include <objbase.h>
  36 #include <wincodecsdk.h>
  37 #include <gdiplus.h>
  38
  39 #include <wine/unicode.h>
  40 #include <wine/list.h>
  41
  42 #include <wine/debug.h>
  43 WINE_DEFAULT_DEBUG_CHANNEL(gdiplus);
  44
  45 #define GP_DEFAULT_PENSTYLE (PS_GEOMETRIC | PS_SOLID | PS_ENDCAP_FLAT | PS_JOIN_MITER)
  46 #define MAX_ARC_PTS (13)
  47 #define MAX_DASHLEN (16) /* this is a limitation of gdi */
  48 #define INCH_HIMETRIC (2540)
  49
  50 #define VERSION_MAGIC 0xdbc01001
  51 #define TENSION_CONST (0.3)
  52
  53 COLORREF ARGB2COLORREF(ARGB color) DECLSPEC_HIDDEN;
  54 HBITMAP ARGB2BMP(ARGB color) DECLSPEC_HIDDEN;
  55 extern INT arc2polybezier(GpPointF * points, REAL x1, REAL y1, REAL x2, REAL y2,
  56     REAL startAngle, REAL sweepAngle) DECLSPEC_HIDDEN;
  57 extern REAL gdiplus_atan2(REAL dy, REAL dx) DECLSPEC_HIDDEN;
  58 extern GpStatus hresult_to_status(HRESULT res) DECLSPEC_HIDDEN;
  59 extern REAL units_to_pixels(REAL units, GpUnit unit, REAL dpi) DECLSPEC_HIDDEN;
  60 extern REAL pixels_to_units(REAL pixels, GpUnit unit, REAL dpi) DECLSPEC_HIDDEN;
  61 extern REAL units_scale(GpUnit from, GpUnit to, REAL dpi) DECLSPEC_HIDDEN;
  62
  63 extern GpStatus graphics_from_image(GpImage *image, GpGraphics **graphics) DECLSPEC_HIDDEN;
  64
  65 extern GpStatus METAFILE_GetGraphicsContext(GpMetafile* metafile, GpGraphics **result) DECLSPEC_HIDDEN;
  66 extern GpStatus METAFILE_GetDC(GpMetafile* metafile, HDC *hdc) DECLSPEC_HIDDEN;
  67 extern GpStatus METAFILE_ReleaseDC(GpMetafile* metafile, HDC hdc) DECLSPEC_HIDDEN;
  68 extern GpStatus METAFILE_GraphicsDeleted(GpMetafile* metafile) DECLSPEC_HIDDEN;
  69 extern MetafileType METAFILE_GetEmfType(HENHMETAFILE hemf) DECLSPEC_HIDDEN;
  70
  71 extern void calc_curve_bezier(CONST GpPointF *pts, REAL tension, REAL *x1,
  72     REAL *y1, REAL *x2, REAL *y2) DECLSPEC_HIDDEN;
  73 extern void calc_curve_bezier_endp(REAL xend, REAL yend, REAL xadj, REAL yadj,
  74     REAL tension, REAL *x, REAL *y) DECLSPEC_HIDDEN;
  75
  76 extern void free_installed_fonts(void) DECLSPEC_HIDDEN;
  77
  78 extern BOOL lengthen_path(GpPath *path, INT len) DECLSPEC_HIDDEN;
  79
  80 extern GpStatus trace_path(GpGraphics *graphics, GpPath *path) DECLSPEC_HIDDEN;
  81
  82 typedef struct region_element region_element;
  83 extern void delete_element(region_element *element) DECLSPEC_HIDDEN;
  84
  85 extern GpStatus get_hatch_data(HatchStyle hatchstyle, const char **result) DECLSPEC_HIDDEN;
  86
  87 static inline INT gdip_round(REAL x)
  88 {
  89     return (INT) floorf(x + 0.5);
  90 }
  91
  92 static inline INT ceilr(REAL x)
  93 {
  94     return (INT) ceilf(x);
  95 }
  96
  97 static inline REAL deg2rad(REAL degrees)
  98 {
  99     return M_PI * degrees / 180.0;
 100 }
 101
 102 static inline ARGB color_over(ARGB bg, ARGB fg)
 103 {
 104     BYTE b, g, r, a;
 105     BYTE bg_alpha, fg_alpha;
 106
 107     fg_alpha = (fg>>24)&0xff;
 108
 109     if (fg_alpha == 0xff) return fg;
 110
 111     if (fg_alpha == 0) return bg;
 112
 113     bg_alpha = (((bg>>24)&0xff) * (0xff-fg_alpha)) / 0xff;
 114
 115     if (bg_alpha == 0) return fg;
 116
 117     a = bg_alpha + fg_alpha;
 118     b = ((bg&0xff)*bg_alpha + (fg&0xff)*fg_alpha)/a;
 119     g = (((bg>>8)&0xff)*bg_alpha + ((fg>>8)&0xff)*fg_alpha)/a;
 120     r = (((bg>>16)&0xff)*bg_alpha + ((fg>>16)&0xff)*fg_alpha)/a;
 121
 122     return (a<<24)|(r<<16)|(g<<8)|b;
 123 }
 124
 125 extern const char *debugstr_rectf(CONST RectF* rc) DECLSPEC_HIDDEN;
 126
 127 extern const char *debugstr_pointf(CONST PointF* pt) DECLSPEC_HIDDEN;
 128
 129 extern void convert_32bppARGB_to_32bppPARGB(UINT width, UINT height,
 130     BYTE *dst_bits, INT dst_stride, const BYTE *src_bits, INT src_stride) DECLSPEC_HIDDEN;
 131
 132 extern GpStatus convert_pixels(INT width, INT height,
 133     INT dst_stride, BYTE *dst_bits, PixelFormat dst_format,
 134     INT src_stride, const BYTE *src_bits, PixelFormat src_format, ColorPalette *palette) DECLSPEC_HIDDEN;
 135
 136 struct GpMatrix{
 137     REAL matrix[6];
 138 };
 139
 140 struct GpPen{
 141     UINT style;
 142     GpUnit unit;
 143     REAL width;
 144     GpLineCap endcap;
 145     GpLineCap startcap;
 146     GpDashCap dashcap;
 147     GpCustomLineCap *customstart;
 148     GpCustomLineCap *customend;
 149     GpLineJoin join;
 150     REAL miterlimit;
 151     GpDashStyle dash;
 152     REAL *dashes;
 153     INT numdashes;
 154     REAL offset;    /* dash offset */
 155     GpBrush *brush;
 156     GpPenAlignment align;
 157 };
 158
 159 struct GpGraphics{
 160     HDC hdc;
 161     HWND hwnd;
 162     BOOL owndc;
 163     BOOL alpha_hdc;
 164     GpImage *image;
 165     ImageType image_type;
 166     SmoothingMode smoothing;
 167     CompositingQuality compqual;
 168     InterpolationMode interpolation;
 169     PixelOffsetMode pixeloffset;
 170     CompositingMode compmode;
 171     TextRenderingHint texthint;
 172     GpUnit unit;    /* page unit */
 173     REAL scale;     /* page scale */
 174     REAL xres, yres;
 175     GpMatrix worldtrans; /* world transform */
 176     BOOL busy;      /* hdc handle obtained by GdipGetDC */
 177     GpRegion *clip; /* in device coords */
 178     UINT textcontrast; /* not used yet. get/set only */
 179     struct list containers;
 180     GraphicsContainer contid; /* last-issued container ID */
 181     INT origin_x, origin_y;
 182     /* For giving the caller an HDC when we technically can't: */
 183     HBITMAP temp_hbitmap;
 184     int temp_hbitmap_width;
 185     int temp_hbitmap_height;
 186     BYTE *temp_bits;
 187     HDC temp_hdc;
 188 };
 189
 190 struct GpBrush{
 191     GpBrushType bt;
 192 };
 193
 194 struct GpHatch{
 195     GpBrush brush;
 196     HatchStyle hatchstyle;
 197     ARGB forecol;
 198     ARGB backcol;
 199 };
 200
 201 struct GpSolidFill{
 202     GpBrush brush;
 203     ARGB color;
 204 };
 205
 206 struct GpPathGradient{
 207     GpBrush brush;
 208     GpPath* path;
 209     ARGB centercolor;
 210     GpWrapMode wrap;
 211     BOOL gamma;
 212     GpPointF center;
 213     GpPointF focus;
 214     REAL* blendfac;  /* blend factors */
 215     REAL* blendpos;  /* blend positions */
 216     INT blendcount;
 217     ARGB *surroundcolors;
 218     INT surroundcolorcount;
 219     ARGB* pblendcolor; /* preset blend colors */
 220     REAL* pblendpos; /* preset blend positions */
 221     INT pblendcount;
 222     GpMatrix transform;
 223 };
 224
 225 struct GpLineGradient{
 226     GpBrush brush;
 227     GpPointF startpoint;
 228     GpPointF endpoint;
 229     ARGB startcolor;
 230     ARGB endcolor;
 231     RectF rect;
 232     GpWrapMode wrap;
 233     BOOL gamma;
 234     REAL* blendfac;  /* blend factors */
 235     REAL* blendpos;  /* blend positions */
 236     INT blendcount;
 237     ARGB* pblendcolor; /* preset blend colors */
 238     REAL* pblendpos; /* preset blend positions */
 239     INT pblendcount;
 240 };
 241
 242 struct GpTexture{
 243     GpBrush brush;
 244     GpMatrix transform;
 245     GpImage *image;
 246     GpImageAttributes *imageattributes;
 247     BYTE *bitmap_bits; /* image bits converted to ARGB and run through imageattributes */
 248 };
 249
 250 struct GpPath{
 251     GpFillMode fill;
 252     GpPathData pathdata;
 253     BOOL newfigure; /* whether the next drawing action starts a new figure */
 254     INT datalen; /* size of the arrays in pathdata */
 255 };
 256
 257 struct GpPathIterator{
 258     GpPathData pathdata;
 259     INT subpath_pos;    /* for NextSubpath methods */
 260     INT marker_pos;     /* for NextMarker methods */
 261     INT pathtype_pos;   /* for NextPathType methods */
 262 };
 263
 264 struct GpCustomLineCap{
 265     GpPathData pathdata;
 266     BOOL fill;      /* TRUE for fill, FALSE for stroke */
 267     GpLineCap cap;  /* as far as I can tell, this value is ignored */
 268     REAL inset;     /* how much to adjust the end of the line */
 269     GpLineJoin join;
 270     REAL scale;
 271 };
 272
 273 struct GpAdustableArrowCap{
 274     GpCustomLineCap cap;
 275 };
 276
 277 struct GpImage{
 278     IPicture *picture;
 279     IStream *stream; /* source stream */
 280     ImageType type;
 281     GUID format;
 282     UINT flags;
 283     UINT frame_count, current_frame;
 284     ColorPalette *palette;
 285     REAL xres, yres;
 286 };
 287
 288 struct GpMetafile{
 289     GpImage image;
 290     GpRectF bounds;
 291     GpUnit unit;
 292     MetafileType metafile_type;
 293     HENHMETAFILE hemf;
 294     int preserve_hemf; /* if true, hemf belongs to the app and should not be deleted */
 295
 296     /* recording */
 297     HDC record_dc;
 298     GpGraphics *record_graphics;
 299     BYTE *comment_data;
 300     DWORD comment_data_size;
 301     DWORD comment_data_length;
 302
 303     /* playback */
 304     GpGraphics *playback_graphics;
 305     HDC playback_dc;
 306     GpPointF playback_points[3];
 307     HANDLETABLE *handle_table;
 308     int handle_count;
 309 };
 310
 311 struct GpBitmap{
 312     GpImage image;
 313     INT width;
 314     INT height;
 315     PixelFormat format;
 316     ImageLockMode lockmode;
 317     INT numlocks;
 318     BYTE *bitmapbits;   /* pointer to the buffer we passed in BitmapLockBits */
 319     HBITMAP hbitmap;
 320     HDC hdc;
 321     BYTE *bits; /* actual image bits if this is a DIB */
 322     INT stride; /* stride of bits if this is a DIB */
 323     BYTE *own_bits; /* image bits that need to be freed with this object */
 324     INT lockx, locky; /* X and Y coordinates of the rect when a bitmap is locked for writing. */
 325     IWICMetadataReader *metadata_reader; /* NULL if there is no metadata */
 326     UINT prop_count;
 327     PropertyItem *prop_item; /* cached image properties */
 328 };
 329
 330 struct GpCachedBitmap{
 331     GpImage *image;
 332 };
 333
 334 struct color_key{
 335     BOOL enabled;
 336     ARGB low;
 337     ARGB high;
 338 };
 339
 340 struct color_matrix{
 341     BOOL enabled;
 342     ColorMatrixFlags flags;
 343     ColorMatrix colormatrix;
 344     ColorMatrix graymatrix;
 345 };
 346
 347 struct color_remap_table{
 348     BOOL enabled;
 349     INT mapsize;
 350     ColorMap *colormap;
 351 };
 352
 353 struct GpImageAttributes{
 354     WrapMode wrap;
 355     ARGB outside_color;
 356     BOOL clamp;
 357     struct color_key colorkeys[ColorAdjustTypeCount];
 358     struct color_matrix colormatrices[ColorAdjustTypeCount];
 359     struct color_remap_table colorremaptables[ColorAdjustTypeCount];
 360     BOOL gamma_enabled[ColorAdjustTypeCount];
 361     REAL gamma[ColorAdjustTypeCount];
 362 };
 363
 364 struct GpFont{
 365     GpFontFamily *family;
 366     OUTLINETEXTMETRICW otm;
 367     REAL emSize; /* in font units */
 368     Unit unit;
 369 };
 370
 371 struct GpStringFormat{
 372     INT attr;
 373     LANGID lang;
 374     LANGID digitlang;
 375     StringAlignment align;
 376     StringTrimming trimming;
 377     HotkeyPrefix hkprefix;
 378     StringAlignment vertalign;
 379     StringDigitSubstitute digitsub;
 380     INT tabcount;
 381     REAL firsttab;
 382     REAL *tabs;
 383     CharacterRange *character_ranges;
 384     INT range_count;
 385     BOOL generic_typographic;
 386 };
 387
 388 struct GpFontCollection{
 389     GpFontFamily **FontFamilies;
 390     INT count;
 391     INT allocated;
 392 };
 393
 394 struct GpFontFamily{
 395     WCHAR FamilyName[LF_FACESIZE];
 396     UINT16 em_height, ascent, descent, line_spacing; /* in font units */
 397     int dpi;
 398 };
 399
 400 /* internal use */
 401 typedef enum RegionType
 402 {
 403     RegionDataRect          = 0x10000000,
 404     RegionDataPath          = 0x10000001,
 405     RegionDataEmptyRect     = 0x10000002,
 406     RegionDataInfiniteRect  = 0x10000003,
 407 } RegionType;
 408
 409 struct region_element
 410 {
 411     DWORD type; /* Rectangle, Path, SpecialRectangle, or CombineMode */
 412     union
 413     {
 414         GpRectF rect;
 415         struct
 416         {
 417             GpPath* path;
 418             struct
 419             {
 420                 DWORD size;
 421                 DWORD magic;
 422                 DWORD count;
 423                 DWORD flags;
 424             } pathheader;
 425         } pathdata;
 426         struct
 427         {
 428             struct region_element *left;  /* the original region */
 429             struct region_element *right; /* what *left was combined with */
 430         } combine;
 431     } elementdata;
 432 };
 433
 434 struct GpRegion{
 435     struct
 436     {
 437         DWORD size;
 438         DWORD checksum;
 439         DWORD magic;
 440         DWORD num_children;
 441     } header;
 442     region_element node;
 443 };
 444
 445 typedef GpStatus (*gdip_format_string_callback)(HDC hdc,
 446     GDIPCONST WCHAR *string, INT index, INT length, GDIPCONST GpFont *font,
 447     GDIPCONST RectF *rect, GDIPCONST GpStringFormat *format,
 448     INT lineno, const RectF *bounds, INT *underlined_indexes,
 449     INT underlined_index_count, void *user_data);
 450
 451 GpStatus gdip_format_string(HDC hdc,
 452     GDIPCONST WCHAR *string, INT length, GDIPCONST GpFont *font,
 453     GDIPCONST RectF *rect, GDIPCONST GpStringFormat *format, int ignore_empty_clip,
 454     gdip_format_string_callback callback, void *user_data) DECLSPEC_HIDDEN;
 455
 456 void get_log_fontW(const GpFont *, GpGraphics *, LOGFONTW *) DECLSPEC_HIDDEN;
 457
 458 #endif /* __WINE_GP_PRIVATE_H_ */