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