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 #define GIF_DISPOSE_UNSPECIFIED 0
  46 #define GIF_DISPOSE_DO_NOT_DISPOSE 1
  47 #define GIF_DISPOSE_RESTORE_TO_BKGND 2
  48 #define GIF_DISPOSE_RESTORE_TO_PREV 3
  49
  50 COLORREF ARGB2COLORREF(ARGB color) DECLSPEC_HIDDEN;
  51 HBITMAP ARGB2BMP(ARGB color) DECLSPEC_HIDDEN;
  52 extern INT arc2polybezier(GpPointF * points, REAL x1, REAL y1, REAL x2, REAL y2,
  53     REAL startAngle, REAL sweepAngle) DECLSPEC_HIDDEN;
  54 extern REAL gdiplus_atan2(REAL dy, REAL dx) DECLSPEC_HIDDEN;
  55 extern GpStatus hresult_to_status(HRESULT res) DECLSPEC_HIDDEN;
  56 extern REAL units_to_pixels(REAL units, GpUnit unit, REAL dpi) DECLSPEC_HIDDEN;
  57 extern REAL pixels_to_units(REAL pixels, GpUnit unit, REAL dpi) DECLSPEC_HIDDEN;
  58 extern REAL units_scale(GpUnit from, GpUnit to, REAL dpi) DECLSPEC_HIDDEN;
  59
  60 extern GpStatus graphics_from_image(GpImage *image, GpGraphics **graphics) DECLSPEC_HIDDEN;
  61
  62 extern GpStatus METAFILE_GetGraphicsContext(GpMetafile* metafile, GpGraphics **result) DECLSPEC_HIDDEN;
  63 extern GpStatus METAFILE_GetDC(GpMetafile* metafile, HDC *hdc) DECLSPEC_HIDDEN;
  64 extern GpStatus METAFILE_ReleaseDC(GpMetafile* metafile, HDC hdc) DECLSPEC_HIDDEN;
  65 extern GpStatus METAFILE_FillRectangles(GpMetafile* metafile, GpBrush* brush,
  66     GDIPCONST GpRectF* rects, INT count) DECLSPEC_HIDDEN;
  67 extern GpStatus METAFILE_SetPageTransform(GpMetafile* metafile, GpUnit unit, REAL scale) DECLSPEC_HIDDEN;
  68 extern GpStatus METAFILE_GraphicsDeleted(GpMetafile* metafile) DECLSPEC_HIDDEN;
  69
  70 extern void calc_curve_bezier(const GpPointF *pts, REAL tension, REAL *x1,
  71     REAL *y1, REAL *x2, REAL *y2) DECLSPEC_HIDDEN;
  72 extern void calc_curve_bezier_endp(REAL xend, REAL yend, REAL xadj, REAL yadj,
  73     REAL tension, REAL *x, REAL *y) DECLSPEC_HIDDEN;
  74
  75 extern void free_installed_fonts(void) DECLSPEC_HIDDEN;
  76
  77 extern BOOL lengthen_path(GpPath *path, INT len) DECLSPEC_HIDDEN;
  78
  79 extern GpStatus trace_path(GpGraphics *graphics, GpPath *path) DECLSPEC_HIDDEN;
  80
  81 typedef struct region_element region_element;
  82 extern void delete_element(region_element *element) DECLSPEC_HIDDEN;
  83
  84 extern GpStatus get_hatch_data(HatchStyle hatchstyle, const char **result) DECLSPEC_HIDDEN;
  85
  86 static inline INT gdip_round(REAL x)
  87 {
  88     return (INT) floorf(x + 0.5);
  89 }
  90
  91 static inline INT ceilr(REAL x)
  92 {
  93     return (INT) ceilf(x);
  94 }
  95
  96 static inline REAL deg2rad(REAL degrees)
  97 {
  98     return M_PI * degrees / 180.0;
  99 }
 100
 101 static inline ARGB color_over(ARGB bg, ARGB fg)
 102 {
 103     BYTE b, g, r, a;
 104     BYTE bg_alpha, fg_alpha;
 105
 106     fg_alpha = (fg>>24)&0xff;
 107
 108     if (fg_alpha == 0xff) return fg;
 109
 110     if (fg_alpha == 0) return bg;
 111
 112     bg_alpha = (((bg>>24)&0xff) * (0xff-fg_alpha)) / 0xff;
 113
 114     if (bg_alpha == 0) return fg;
 115
 116     a = bg_alpha + fg_alpha;
 117     b = ((bg&0xff)*bg_alpha + (fg&0xff)*fg_alpha)/a;
 118     g = (((bg>>8)&0xff)*bg_alpha + ((fg>>8)&0xff)*fg_alpha)/a;
 119     r = (((bg>>16)&0xff)*bg_alpha + ((fg>>16)&0xff)*fg_alpha)/a;
 120
 121     return (a<<24)|(r<<16)|(g<<8)|b;
 122 }
 123
 124 /* fg is premult, bg and return value are not */
 125 static inline ARGB color_over_fgpremult(ARGB bg, ARGB fg)
 126 {
 127     BYTE b, g, r, a;
 128     BYTE bg_alpha, fg_alpha;
 129
 130     fg_alpha = (fg>>24)&0xff;
 131
 132     if (fg_alpha == 0) return bg;
 133
 134     bg_alpha = (((bg>>24)&0xff) * (0xff-fg_alpha)) / 0xff;
 135
 136     a = bg_alpha + fg_alpha;
 137     b = ((bg&0xff)*bg_alpha + (fg&0xff)*0xff)/a;
 138     g = (((bg>>8)&0xff)*bg_alpha + ((fg>>8)&0xff)*0xff)/a;
 139     r = (((bg>>16)&0xff)*bg_alpha + ((fg>>16)&0xff)*0xff)/a;
 140
 141     return (a<<24)|(r<<16)|(g<<8)|b;
 142 }
 143
 144 extern const char *debugstr_rectf(const RectF* rc) DECLSPEC_HIDDEN;
 145
 146 extern const char *debugstr_pointf(const PointF* pt) DECLSPEC_HIDDEN;
 147
 148 extern void convert_32bppARGB_to_32bppPARGB(UINT width, UINT height,
 149     BYTE *dst_bits, INT dst_stride, const BYTE *src_bits, INT src_stride) DECLSPEC_HIDDEN;
 150
 151 extern GpStatus convert_pixels(INT width, INT height,
 152     INT dst_stride, BYTE *dst_bits, PixelFormat dst_format,
 153     INT src_stride, const BYTE *src_bits, PixelFormat src_format, ColorPalette *palette) DECLSPEC_HIDDEN;
 154
 155 struct GpMatrix{
 156     REAL matrix[6];
 157 };
 158
 159 struct GpPen{
 160     UINT style;
 161     GpUnit unit;
 162     REAL width;
 163     GpLineCap endcap;
 164     GpLineCap startcap;
 165     GpDashCap dashcap;
 166     GpCustomLineCap *customstart;
 167     GpCustomLineCap *customend;
 168     GpLineJoin join;
 169     REAL miterlimit;
 170     GpDashStyle dash;
 171     REAL *dashes;
 172     INT numdashes;
 173     REAL offset;    /* dash offset */
 174     GpBrush *brush;
 175     GpPenAlignment align;
 176 };
 177
 178 struct GpGraphics{
 179     HDC hdc;
 180     HWND hwnd;
 181     BOOL owndc;
 182     BOOL alpha_hdc;
 183     GpImage *image;
 184     ImageType image_type;
 185     SmoothingMode smoothing;
 186     CompositingQuality compqual;
 187     InterpolationMode interpolation;
 188     PixelOffsetMode pixeloffset;
 189     CompositingMode compmode;
 190     TextRenderingHint texthint;
 191     GpUnit unit;    /* page unit */
 192     REAL scale;     /* page scale */
 193     REAL xres, yres;
 194     GpMatrix worldtrans; /* world transform */
 195     BOOL busy;      /* hdc handle obtained by GdipGetDC */
 196     GpRegion *clip; /* in device coords */
 197     UINT textcontrast; /* not used yet. get/set only */
 198     struct list containers;
 199     GraphicsContainer contid; /* last-issued container ID */
 200     INT origin_x, origin_y;
 201     /* For giving the caller an HDC when we technically can't: */
 202     HBITMAP temp_hbitmap;
 203     int temp_hbitmap_width;
 204     int temp_hbitmap_height;
 205     BYTE *temp_bits;
 206     HDC temp_hdc;
 207 };
 208
 209 struct GpBrush{
 210     GpBrushType bt;
 211 };
 212
 213 struct GpHatch{
 214     GpBrush brush;
 215     HatchStyle hatchstyle;
 216     ARGB forecol;
 217     ARGB backcol;
 218 };
 219
 220 struct GpSolidFill{
 221     GpBrush brush;
 222     ARGB color;
 223 };
 224
 225 struct GpPathGradient{
 226     GpBrush brush;
 227     GpPath* path;
 228     ARGB centercolor;
 229     GpWrapMode wrap;
 230     BOOL gamma;
 231     GpPointF center;
 232     GpPointF focus;
 233     REAL* blendfac;  /* blend factors */
 234     REAL* blendpos;  /* blend positions */
 235     INT blendcount;
 236     ARGB *surroundcolors;
 237     INT surroundcolorcount;
 238     ARGB* pblendcolor; /* preset blend colors */
 239     REAL* pblendpos; /* preset blend positions */
 240     INT pblendcount;
 241     GpMatrix transform;
 242 };
 243
 244 struct GpLineGradient{
 245     GpBrush brush;
 246     GpPointF startpoint;
 247     GpPointF endpoint;
 248     ARGB startcolor;
 249     ARGB endcolor;
 250     RectF rect;
 251     GpWrapMode wrap;
 252     BOOL gamma;
 253     REAL* blendfac;  /* blend factors */
 254     REAL* blendpos;  /* blend positions */
 255     INT blendcount;
 256     ARGB* pblendcolor; /* preset blend colors */
 257     REAL* pblendpos; /* preset blend positions */
 258     INT pblendcount;
 259 };
 260
 261 struct GpTexture{
 262     GpBrush brush;
 263     GpMatrix transform;
 264     GpImage *image;
 265     GpImageAttributes *imageattributes;
 266     BYTE *bitmap_bits; /* image bits converted to ARGB and run through imageattributes */
 267 };
 268
 269 struct GpPath{
 270     GpFillMode fill;
 271     GpPathData pathdata;
 272     BOOL newfigure; /* whether the next drawing action starts a new figure */
 273     INT datalen; /* size of the arrays in pathdata */
 274 };
 275
 276 struct GpPathIterator{
 277     GpPathData pathdata;
 278     INT subpath_pos;    /* for NextSubpath methods */
 279     INT marker_pos;     /* for NextMarker methods */
 280     INT pathtype_pos;   /* for NextPathType methods */
 281 };
 282
 283 struct GpCustomLineCap{
 284     GpPathData pathdata;
 285     BOOL fill;      /* TRUE for fill, FALSE for stroke */
 286     GpLineCap cap;  /* as far as I can tell, this value is ignored */
 287     REAL inset;     /* how much to adjust the end of the line */
 288     GpLineJoin join;
 289     REAL scale;
 290 };
 291
 292 struct GpAdustableArrowCap{
 293     GpCustomLineCap cap;
 294 };
 295
 296 struct GpImage{
 297     IPicture *picture;
 298     IWICBitmapDecoder *decoder;
 299     ImageType type;
 300     GUID format;
 301     UINT flags;
 302     UINT frame_count, current_frame;
 303     ColorPalette *palette;
 304     REAL xres, yres;
 305 };
 306
 307 struct GpMetafile{
 308     GpImage image;
 309     GpRectF bounds;
 310     GpUnit unit;
 311     MetafileType metafile_type;
 312     HENHMETAFILE hemf;
 313     int preserve_hemf; /* if true, hemf belongs to the app and should not be deleted */
 314
 315     /* recording */
 316     HDC record_dc;
 317     GpGraphics *record_graphics;
 318     BYTE *comment_data;
 319     DWORD comment_data_size;
 320     DWORD comment_data_length;
 321
 322     /* playback */
 323     GpGraphics *playback_graphics;
 324     HDC playback_dc;
 325     GpPointF playback_points[3];
 326     GpRectF src_rect;
 327     HANDLETABLE *handle_table;
 328     int handle_count;
 329     GpMatrix *world_transform;
 330     GpUnit page_unit;
 331     REAL page_scale;
 332 };
 333
 334 struct GpBitmap{
 335     GpImage image;
 336     INT width;
 337     INT height;
 338     PixelFormat format;
 339     ImageLockMode lockmode;
 340     INT numlocks;
 341     BYTE *bitmapbits;   /* pointer to the buffer we passed in BitmapLockBits */
 342     HBITMAP hbitmap;
 343     HDC hdc;
 344     BYTE *bits; /* actual image bits if this is a DIB */
 345     INT stride; /* stride of bits if this is a DIB */
 346     BYTE *own_bits; /* image bits that need to be freed with this object */
 347     INT lockx, locky; /* X and Y coordinates of the rect when a bitmap is locked for writing. */
 348     IWICMetadataReader *metadata_reader; /* NULL if there is no metadata */
 349     UINT prop_count;
 350     PropertyItem *prop_item; /* cached image properties */
 351 };
 352
 353 struct GpCachedBitmap{
 354     GpImage *image;
 355 };
 356
 357 struct color_key{
 358     BOOL enabled;
 359     ARGB low;
 360     ARGB high;
 361 };
 362
 363 struct color_matrix{
 364     BOOL enabled;
 365     ColorMatrixFlags flags;
 366     ColorMatrix colormatrix;
 367     ColorMatrix graymatrix;
 368 };
 369
 370 struct color_remap_table{
 371     BOOL enabled;
 372     INT mapsize;
 373     ColorMap *colormap;
 374 };
 375
 376 struct GpImageAttributes{
 377     WrapMode wrap;
 378     ARGB outside_color;
 379     BOOL clamp;
 380     struct color_key colorkeys[ColorAdjustTypeCount];
 381     struct color_matrix colormatrices[ColorAdjustTypeCount];
 382     struct color_remap_table colorremaptables[ColorAdjustTypeCount];
 383     BOOL gamma_enabled[ColorAdjustTypeCount];
 384     REAL gamma[ColorAdjustTypeCount];
 385 };
 386
 387 struct GpFont{
 388     GpFontFamily *family;
 389     OUTLINETEXTMETRICW otm;
 390     REAL emSize; /* in font units */
 391     Unit unit;
 392 };
 393
 394 struct GpStringFormat{
 395     INT attr;
 396     LANGID lang;
 397     LANGID digitlang;
 398     StringAlignment align;
 399     StringTrimming trimming;
 400     HotkeyPrefix hkprefix;
 401     StringAlignment vertalign;
 402     StringDigitSubstitute digitsub;
 403     INT tabcount;
 404     REAL firsttab;
 405     REAL *tabs;
 406     CharacterRange *character_ranges;
 407     INT range_count;
 408     BOOL generic_typographic;
 409 };
 410
 411 struct GpFontCollection{
 412     GpFontFamily **FontFamilies;
 413     INT count;
 414     INT allocated;
 415 };
 416
 417 struct GpFontFamily{
 418     WCHAR FamilyName[LF_FACESIZE];
 419     UINT16 em_height, ascent, descent, line_spacing; /* in font units */
 420     int dpi;
 421 };
 422
 423 /* internal use */
 424 typedef enum RegionType
 425 {
 426     RegionDataRect          = 0x10000000,
 427     RegionDataPath          = 0x10000001,
 428     RegionDataEmptyRect     = 0x10000002,
 429     RegionDataInfiniteRect  = 0x10000003,
 430 } RegionType;
 431
 432 struct region_element
 433 {
 434     DWORD type; /* Rectangle, Path, SpecialRectangle, or CombineMode */
 435     union
 436     {
 437         GpRectF rect;
 438         GpPath *path;
 439         struct
 440         {
 441             struct region_element *left;  /* the original region */
 442             struct region_element *right; /* what *left was combined with */
 443         } combine;
 444     } elementdata;
 445 };
 446
 447 struct GpRegion{
 448     DWORD num_children;
 449     region_element node;
 450 };
 451
 452 typedef GpStatus (*gdip_format_string_callback)(HDC hdc,
 453     GDIPCONST WCHAR *string, INT index, INT length, GDIPCONST GpFont *font,
 454     GDIPCONST RectF *rect, GDIPCONST GpStringFormat *format,
 455     INT lineno, const RectF *bounds, INT *underlined_indexes,
 456     INT underlined_index_count, void *user_data);
 457
 458 GpStatus gdip_format_string(HDC hdc,
 459     GDIPCONST WCHAR *string, INT length, GDIPCONST GpFont *font,
 460     GDIPCONST RectF *rect, GDIPCONST GpStringFormat *format, int ignore_empty_clip,
 461     gdip_format_string_callback callback, void *user_data) DECLSPEC_HIDDEN;
 462
 463 void get_log_fontW(const GpFont *, GpGraphics *, LOGFONTW *) DECLSPEC_HIDDEN;
 464
 465 #endif