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 VERSION_MAGIC2 0xdbc01002
  44 #define TENSION_CONST (0.3)
  45
  46 #define GIF_DISPOSE_UNSPECIFIED 0
  47 #define GIF_DISPOSE_DO_NOT_DISPOSE 1
  48 #define GIF_DISPOSE_RESTORE_TO_BKGND 2
  49 #define GIF_DISPOSE_RESTORE_TO_PREV 3
  50
  51 COLORREF ARGB2COLORREF(ARGB color) DECLSPEC_HIDDEN;
  52 HBITMAP ARGB2BMP(ARGB color) DECLSPEC_HIDDEN;
  53 extern INT arc2polybezier(GpPointF * points, REAL x1, REAL y1, REAL x2, REAL y2,
  54     REAL startAngle, REAL sweepAngle) DECLSPEC_HIDDEN;
  55 extern REAL gdiplus_atan2(REAL dy, REAL dx) DECLSPEC_HIDDEN;
  56 extern GpStatus hresult_to_status(HRESULT res) DECLSPEC_HIDDEN;
  57 extern REAL units_to_pixels(REAL units, GpUnit unit, REAL dpi) DECLSPEC_HIDDEN;
  58 extern REAL pixels_to_units(REAL pixels, GpUnit unit, REAL dpi) DECLSPEC_HIDDEN;
  59 extern REAL units_scale(GpUnit from, GpUnit to, REAL dpi) DECLSPEC_HIDDEN;
  60
  61 extern GpStatus graphics_from_image(GpImage *image, GpGraphics **graphics) DECLSPEC_HIDDEN;
  62
  63 extern GpStatus METAFILE_GetGraphicsContext(GpMetafile* metafile, GpGraphics **result) DECLSPEC_HIDDEN;
  64 extern GpStatus METAFILE_GetDC(GpMetafile* metafile, HDC *hdc) DECLSPEC_HIDDEN;
  65 extern GpStatus METAFILE_ReleaseDC(GpMetafile* metafile, HDC hdc) DECLSPEC_HIDDEN;
  66 extern GpStatus METAFILE_FillRectangles(GpMetafile* metafile, GpBrush* brush,
  67     GDIPCONST GpRectF* rects, INT count) DECLSPEC_HIDDEN;
  68 extern GpStatus METAFILE_SetPageTransform(GpMetafile* metafile, GpUnit unit, REAL scale) DECLSPEC_HIDDEN;
  69 extern GpStatus METAFILE_GraphicsDeleted(GpMetafile* metafile) 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 /* fg is premult, bg and return value are not */
 126 static inline ARGB color_over_fgpremult(ARGB bg, ARGB fg)
 127 {
 128     BYTE b, g, r, a;
 129     BYTE bg_alpha, fg_alpha;
 130
 131     fg_alpha = (fg>>24)&0xff;
 132
 133     if (fg_alpha == 0) return bg;
 134
 135     bg_alpha = (((bg>>24)&0xff) * (0xff-fg_alpha)) / 0xff;
 136
 137     a = bg_alpha + fg_alpha;
 138     b = ((bg&0xff)*bg_alpha + (fg&0xff)*0xff)/a;
 139     g = (((bg>>8)&0xff)*bg_alpha + ((fg>>8)&0xff)*0xff)/a;
 140     r = (((bg>>16)&0xff)*bg_alpha + ((fg>>16)&0xff)*0xff)/a;
 141
 142     return (a<<24)|(r<<16)|(g<<8)|b;
 143 }
 144
 145 extern const char *debugstr_rectf(const RectF* rc) DECLSPEC_HIDDEN;
 146
 147 extern const char *debugstr_pointf(const PointF* pt) DECLSPEC_HIDDEN;
 148
 149 extern void convert_32bppARGB_to_32bppPARGB(UINT width, UINT height,
 150     BYTE *dst_bits, INT dst_stride, const BYTE *src_bits, INT src_stride) DECLSPEC_HIDDEN;
 151
 152 extern GpStatus convert_pixels(INT width, INT height,
 153     INT dst_stride, BYTE *dst_bits, PixelFormat dst_format,
 154     INT src_stride, const BYTE *src_bits, PixelFormat src_format, ColorPalette *palette) DECLSPEC_HIDDEN;
 155
 156 struct GpMatrix{
 157     REAL matrix[6];
 158 };
 159
 160 struct GpPen{
 161     UINT style;
 162     GpUnit unit;
 163     REAL width;
 164     GpLineCap endcap;
 165     GpLineCap startcap;
 166     GpDashCap dashcap;
 167     GpCustomLineCap *customstart;
 168     GpCustomLineCap *customend;
 169     GpLineJoin join;
 170     REAL miterlimit;
 171     GpDashStyle dash;
 172     REAL *dashes;
 173     INT numdashes;
 174     REAL offset;    /* dash offset */
 175     GpBrush *brush;
 176     GpPenAlignment align;
 177 };
 178
 179 struct GpGraphics{
 180     HDC hdc;
 181     HWND hwnd;
 182     BOOL owndc;
 183     BOOL alpha_hdc;
 184     GpImage *image;
 185     ImageType image_type;
 186     SmoothingMode smoothing;
 187     CompositingQuality compqual;
 188     InterpolationMode interpolation;
 189     PixelOffsetMode pixeloffset;
 190     CompositingMode compmode;
 191     TextRenderingHint texthint;
 192     GpUnit unit;    /* page unit */
 193     REAL scale;     /* page scale */
 194     REAL xres, yres;
 195     GpMatrix worldtrans; /* world transform */
 196     BOOL busy;      /* hdc handle obtained by GdipGetDC */
 197     GpRegion *clip; /* in device coords */
 198     UINT textcontrast; /* not used yet. get/set only */
 199     struct list containers;
 200     GraphicsContainer contid; /* last-issued container ID */
 201     INT origin_x, origin_y;
 202     /* For giving the caller an HDC when we technically can't: */
 203     HBITMAP temp_hbitmap;
 204     int temp_hbitmap_width;
 205     int temp_hbitmap_height;
 206     BYTE *temp_bits;
 207     HDC temp_hdc;
 208 };
 209
 210 struct GpBrush{
 211     GpBrushType bt;
 212 };
 213
 214 struct GpHatch{
 215     GpBrush brush;
 216     HatchStyle hatchstyle;
 217     ARGB forecol;
 218     ARGB backcol;
 219 };
 220
 221 struct GpSolidFill{
 222     GpBrush brush;
 223     ARGB color;
 224 };
 225
 226 struct GpPathGradient{
 227     GpBrush brush;
 228     GpPath* path;
 229     ARGB centercolor;
 230     GpWrapMode wrap;
 231     BOOL gamma;
 232     GpPointF center;
 233     GpPointF focus;
 234     REAL* blendfac;  /* blend factors */
 235     REAL* blendpos;  /* blend positions */
 236     INT blendcount;
 237     ARGB *surroundcolors;
 238     INT surroundcolorcount;
 239     ARGB* pblendcolor; /* preset blend colors */
 240     REAL* pblendpos; /* preset blend positions */
 241     INT pblendcount;
 242     GpMatrix transform;
 243 };
 244
 245 struct GpLineGradient{
 246     GpBrush brush;
 247     GpPointF startpoint;
 248     GpPointF endpoint;
 249     ARGB startcolor;
 250     ARGB endcolor;
 251     RectF rect;
 252     GpWrapMode wrap;
 253     BOOL gamma;
 254     REAL* blendfac;  /* blend factors */
 255     REAL* blendpos;  /* blend positions */
 256     INT blendcount;
 257     ARGB* pblendcolor; /* preset blend colors */
 258     REAL* pblendpos; /* preset blend positions */
 259     INT pblendcount;
 260 };
 261
 262 struct GpTexture{
 263     GpBrush brush;
 264     GpMatrix transform;
 265     GpImage *image;
 266     GpImageAttributes *imageattributes;
 267     BYTE *bitmap_bits; /* image bits converted to ARGB and run through imageattributes */
 268 };
 269
 270 struct GpPath{
 271     GpFillMode fill;
 272     GpPathData pathdata;
 273     BOOL newfigure; /* whether the next drawing action starts a new figure */
 274     INT datalen; /* size of the arrays in pathdata */
 275 };
 276
 277 struct GpPathIterator{
 278     GpPathData pathdata;
 279     INT subpath_pos;    /* for NextSubpath methods */
 280     INT marker_pos;     /* for NextMarker methods */
 281     INT pathtype_pos;   /* for NextPathType methods */
 282 };
 283
 284 struct GpCustomLineCap{
 285     GpPathData pathdata;
 286     BOOL fill;      /* TRUE for fill, FALSE for stroke */
 287     GpLineCap cap;  /* as far as I can tell, this value is ignored */
 288     REAL inset;     /* how much to adjust the end of the line */
 289     GpLineJoin join;
 290     REAL scale;
 291 };
 292
 293 struct GpAdustableArrowCap{
 294     GpCustomLineCap cap;
 295 };
 296
 297 struct GpImage{
 298     IPicture *picture;
 299     IWICBitmapDecoder *decoder;
 300     ImageType type;
 301     GUID format;
 302     UINT flags;
 303     UINT frame_count, current_frame;
 304     ColorPalette *palette;
 305     REAL xres, yres;
 306 };
 307
 308 struct GpMetafile{
 309     GpImage image;
 310     GpRectF bounds;
 311     GpUnit unit;
 312     MetafileType metafile_type;
 313     HENHMETAFILE hemf;
 314     int preserve_hemf; /* if true, hemf belongs to the app and should not be deleted */
 315
 316     /* recording */
 317     HDC record_dc;
 318     GpGraphics *record_graphics;
 319     BYTE *comment_data;
 320     DWORD comment_data_size;
 321     DWORD comment_data_length;
 322
 323     /* playback */
 324     GpGraphics *playback_graphics;
 325     HDC playback_dc;
 326     GpPointF playback_points[3];
 327     GpRectF src_rect;
 328     HANDLETABLE *handle_table;
 329     int handle_count;
 330     GpMatrix *world_transform;
 331     GpUnit page_unit;
 332     REAL page_scale;
 333 };
 334
 335 struct GpBitmap{
 336     GpImage image;
 337     INT width;
 338     INT height;
 339     PixelFormat format;
 340     ImageLockMode lockmode;
 341     INT numlocks;
 342     BYTE *bitmapbits;   /* pointer to the buffer we passed in BitmapLockBits */
 343     HBITMAP hbitmap;
 344     HDC hdc;
 345     BYTE *bits; /* actual image bits if this is a DIB */
 346     INT stride; /* stride of bits if this is a DIB */
 347     BYTE *own_bits; /* image bits that need to be freed with this object */
 348     INT lockx, locky; /* X and Y coordinates of the rect when a bitmap is locked for writing. */
 349     IWICMetadataReader *metadata_reader; /* NULL if there is no metadata */
 350     UINT prop_count;
 351     PropertyItem *prop_item; /* cached image properties */
 352 };
 353
 354 struct GpCachedBitmap{
 355     GpImage *image;
 356 };
 357
 358 struct color_key{
 359     BOOL enabled;
 360     ARGB low;
 361     ARGB high;
 362 };
 363
 364 struct color_matrix{
 365     BOOL enabled;
 366     ColorMatrixFlags flags;
 367     ColorMatrix colormatrix;
 368     ColorMatrix graymatrix;
 369 };
 370
 371 struct color_remap_table{
 372     BOOL enabled;
 373     INT mapsize;
 374     ColorMap *colormap;
 375 };
 376
 377 struct GpImageAttributes{
 378     WrapMode wrap;
 379     ARGB outside_color;
 380     BOOL clamp;
 381     struct color_key colorkeys[ColorAdjustTypeCount];
 382     struct color_matrix colormatrices[ColorAdjustTypeCount];
 383     struct color_remap_table colorremaptables[ColorAdjustTypeCount];
 384     BOOL gamma_enabled[ColorAdjustTypeCount];
 385     REAL gamma[ColorAdjustTypeCount];
 386 };
 387
 388 struct GpFont{
 389     GpFontFamily *family;
 390     OUTLINETEXTMETRICW otm;
 391     REAL emSize; /* in font units */
 392     Unit unit;
 393 };
 394
 395 struct GpStringFormat{
 396     INT attr;
 397     LANGID lang;
 398     LANGID digitlang;
 399     StringAlignment align;
 400     StringTrimming trimming;
 401     HotkeyPrefix hkprefix;
 402     StringAlignment vertalign;
 403     StringDigitSubstitute digitsub;
 404     INT tabcount;
 405     REAL firsttab;
 406     REAL *tabs;
 407     CharacterRange *character_ranges;
 408     INT range_count;
 409     BOOL generic_typographic;
 410 };
 411
 412 struct GpFontCollection{
 413     GpFontFamily **FontFamilies;
 414     INT count;
 415     INT allocated;
 416 };
 417
 418 struct GpFontFamily{
 419     WCHAR FamilyName[LF_FACESIZE];
 420     UINT16 em_height, ascent, descent, line_spacing; /* in font units */
 421     int dpi;
 422 };
 423
 424 /* internal use */
 425 typedef enum RegionType
 426 {
 427     RegionDataRect          = 0x10000000,
 428     RegionDataPath          = 0x10000001,
 429     RegionDataEmptyRect     = 0x10000002,
 430     RegionDataInfiniteRect  = 0x10000003,
 431 } RegionType;
 432
 433 struct region_element
 434 {
 435     DWORD type; /* Rectangle, Path, SpecialRectangle, or CombineMode */
 436     union
 437     {
 438         GpRectF rect;
 439         GpPath *path;
 440         struct
 441         {
 442             struct region_element *left;  /* the original region */
 443             struct region_element *right; /* what *left was combined with */
 444         } combine;
 445     } elementdata;
 446 };
 447
 448 struct GpRegion{
 449     DWORD num_children;
 450     region_element node;
 451 };
 452
 453 typedef GpStatus (*gdip_format_string_callback)(HDC hdc,
 454     GDIPCONST WCHAR *string, INT index, INT length, GDIPCONST GpFont *font,
 455     GDIPCONST RectF *rect, GDIPCONST GpStringFormat *format,
 456     INT lineno, const RectF *bounds, INT *underlined_indexes,
 457     INT underlined_index_count, void *user_data);
 458
 459 GpStatus gdip_format_string(HDC hdc,
 460     GDIPCONST WCHAR *string, INT length, GDIPCONST GpFont *font,
 461     GDIPCONST RectF *rect, GDIPCONST GpStringFormat *format, int ignore_empty_clip,
 462     gdip_format_string_callback callback, void *user_data) DECLSPEC_HIDDEN;
 463
 464 void get_log_fontW(const GpFont *, GpGraphics *, LOGFONTW *) DECLSPEC_HIDDEN;
 465
 466 #endif