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