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     PathData pathdata;
 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 };
 200
 201 struct GpLineGradient{
 202     GpBrush brush;
 203     GpPointF startpoint;
 204     GpPointF endpoint;
 205     ARGB startcolor;
 206     ARGB endcolor;
 207     RectF rect;
 208     GpWrapMode wrap;
 209     BOOL gamma;
 210     REAL* blendfac;  /* blend factors */
 211     REAL* blendpos;  /* blend positions */
 212     INT blendcount;
 213     ARGB* pblendcolor; /* preset blend colors */
 214     REAL* pblendpos; /* preset blend positions */
 215     INT pblendcount;
 216 };
 217
 218 struct GpTexture{
 219     GpBrush brush;
 220     GpMatrix *transform;
 221     GpImage *image;
 222     GpImageAttributes *imageattributes;
 223     BYTE *bitmap_bits; /* image bits converted to ARGB and run through imageattributes */
 224 };
 225
 226 struct GpPath{
 227     GpFillMode fill;
 228     GpPathData pathdata;
 229     BOOL newfigure; /* whether the next drawing action starts a new figure */
 230     INT datalen; /* size of the arrays in pathdata */
 231 };
 232
 233 struct GpMatrix{
 234     REAL matrix[6];
 235 };
 236
 237 struct GpPathIterator{
 238     GpPathData pathdata;
 239     INT subpath_pos;    /* for NextSubpath methods */
 240     INT marker_pos;     /* for NextMarker methods */
 241     INT pathtype_pos;   /* for NextPathType methods */
 242 };
 243
 244 struct GpCustomLineCap{
 245     GpPathData pathdata;
 246     BOOL fill;      /* TRUE for fill, FALSE for stroke */
 247     GpLineCap cap;  /* as far as I can tell, this value is ignored */
 248     REAL inset;     /* how much to adjust the end of the line */
 249     GpLineJoin join;
 250     REAL scale;
 251 };
 252
 253 struct GpAdustableArrowCap{
 254     GpCustomLineCap cap;
 255 };
 256
 257 struct GpImage{
 258     IPicture* picture;
 259     ImageType type;
 260     GUID format;
 261     UINT flags;
 262     UINT palette_flags;
 263     UINT palette_count;
 264     UINT palette_size;
 265     ARGB *palette_entries;
 266     REAL xres, yres;
 267 };
 268
 269 struct GpMetafile{
 270     GpImage image;
 271     GpRectF bounds;
 272     GpUnit unit;
 273     MetafileType metafile_type;
 274     HENHMETAFILE hemf;
 275
 276     /* recording */
 277     HDC record_dc;
 278     GpGraphics *record_graphics;
 279     BYTE *comment_data;
 280     DWORD comment_data_size;
 281     DWORD comment_data_length;
 282
 283     /* playback */
 284     GpGraphics *playback_graphics;
 285     HDC playback_dc;
 286     GpPointF playback_points[3];
 287     HANDLETABLE *handle_table;
 288     int handle_count;
 289 };
 290
 291 struct GpBitmap{
 292     GpImage image;
 293     INT width;
 294     INT height;
 295     PixelFormat format;
 296     ImageLockMode lockmode;
 297     INT numlocks;
 298     BYTE *bitmapbits;   /* pointer to the buffer we passed in BitmapLockBits */
 299     HBITMAP hbitmap;
 300     HDC hdc;
 301     BYTE *bits; /* actual image bits if this is a DIB */
 302     INT stride; /* stride of bits if this is a DIB */
 303     BYTE *own_bits; /* image bits that need to be freed with this object */
 304     INT lockx, locky; /* X and Y coordinates of the rect when a bitmap is locked for writing. */
 305 };
 306
 307 struct GpCachedBitmap{
 308     GpImage *image;
 309 };
 310
 311 struct color_key{
 312     BOOL enabled;
 313     ARGB low;
 314     ARGB high;
 315 };
 316
 317 struct color_matrix{
 318     BOOL enabled;
 319     ColorMatrixFlags flags;
 320     ColorMatrix colormatrix;
 321     ColorMatrix graymatrix;
 322 };
 323
 324 struct color_remap_table{
 325     BOOL enabled;
 326     INT mapsize;
 327     GDIPCONST ColorMap *colormap;
 328 };
 329
 330 struct GpImageAttributes{
 331     WrapMode wrap;
 332     ARGB outside_color;
 333     BOOL clamp;
 334     struct color_key colorkeys[ColorAdjustTypeCount];
 335     struct color_matrix colormatrices[ColorAdjustTypeCount];
 336     struct color_remap_table colorremaptables[ColorAdjustTypeCount];
 337     BOOL gamma_enabled[ColorAdjustTypeCount];
 338     REAL gamma[ColorAdjustTypeCount];
 339 };
 340
 341 struct GpFont{
 342     LOGFONTW lfw;
 343     REAL emSize;
 344     REAL pixel_size;
 345     UINT height;
 346     LONG line_spacing;
 347     Unit unit;
 348 };
 349
 350 struct GpStringFormat{
 351     INT attr;
 352     LANGID lang;
 353     LANGID digitlang;
 354     StringAlignment align;
 355     StringTrimming trimming;
 356     HotkeyPrefix hkprefix;
 357     StringAlignment vertalign;
 358     StringDigitSubstitute digitsub;
 359     INT tabcount;
 360     REAL firsttab;
 361     REAL *tabs;
 362     CharacterRange *character_ranges;
 363     INT range_count;
 364 };
 365
 366 struct GpFontCollection{
 367     GpFontFamily **FontFamilies;
 368     INT count;
 369     INT allocated;
 370 };
 371
 372 struct GpFontFamily{
 373     NEWTEXTMETRICW tmw;
 374     WCHAR FamilyName[LF_FACESIZE];
 375 };
 376
 377 /* internal use */
 378 typedef enum RegionType
 379 {
 380     RegionDataRect          = 0x10000000,
 381     RegionDataPath          = 0x10000001,
 382     RegionDataEmptyRect     = 0x10000002,
 383     RegionDataInfiniteRect  = 0x10000003,
 384 } RegionType;
 385
 386 struct region_element
 387 {
 388     DWORD type; /* Rectangle, Path, SpecialRectangle, or CombineMode */
 389     union
 390     {
 391         GpRectF rect;
 392         struct
 393         {
 394             GpPath* path;
 395             struct
 396             {
 397                 DWORD size;
 398                 DWORD magic;
 399                 DWORD count;
 400                 DWORD flags;
 401             } pathheader;
 402         } pathdata;
 403         struct
 404         {
 405             struct region_element *left;  /* the original region */
 406             struct region_element *right; /* what *left was combined with */
 407         } combine;
 408     } elementdata;
 409 };
 410
 411 struct GpRegion{
 412     struct
 413     {
 414         DWORD size;
 415         DWORD checksum;
 416         DWORD magic;
 417         DWORD num_children;
 418     } header;
 419     region_element node;
 420 };
 421
 422 typedef GpStatus (*gdip_format_string_callback)(HDC hdc,
 423     GDIPCONST WCHAR *string, INT index, INT length, GDIPCONST GpFont *font,
 424     GDIPCONST RectF *rect, GDIPCONST GpStringFormat *format,
 425     INT lineno, const RectF *bounds, void *user_data);
 426
 427 GpStatus gdip_format_string(HDC hdc,
 428     GDIPCONST WCHAR *string, INT length, GDIPCONST GpFont *font,
 429     GDIPCONST RectF *rect, GDIPCONST GpStringFormat *format,
 430     gdip_format_string_callback callback, void *user_data) DECLSPEC_HIDDEN;
 431
 432 #endif