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