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 static void *heap_alloc(size_t len) __WINE_ALLOC_SIZE(1);
  52 static inline void *heap_alloc(size_t len)
  53 {
  54     return HeapAlloc(GetProcessHeap(), 0, len);
  55 }
  56
  57 static void *heap_alloc_zero(size_t len) __WINE_ALLOC_SIZE(1);
  58 static inline void *heap_alloc_zero(size_t len)
  59 {
  60     return HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, len);
  61 }
  62
  63 static void *heap_realloc(void *mem, size_t len) __WINE_ALLOC_SIZE(2);
  64 static inline void *heap_realloc(void *mem, size_t len)
  65 {
  66     return HeapReAlloc(GetProcessHeap(), 0, mem, len);
  67 }
  68
  69 static inline BOOL heap_free(void *mem)
  70 {
  71     return HeapFree(GetProcessHeap(), 0, mem);
  72 }
  73
  74 COLORREF ARGB2COLORREF(ARGB color) DECLSPEC_HIDDEN;
  75 HBITMAP ARGB2BMP(ARGB color) DECLSPEC_HIDDEN;
  76 extern INT arc2polybezier(GpPointF * points, REAL x1, REAL y1, REAL x2, REAL y2,
  77     REAL startAngle, REAL sweepAngle) DECLSPEC_HIDDEN;
  78 extern REAL gdiplus_atan2(REAL dy, REAL dx) DECLSPEC_HIDDEN;
  79 extern GpStatus hresult_to_status(HRESULT res) DECLSPEC_HIDDEN;
  80 extern REAL units_to_pixels(REAL units, GpUnit unit, REAL dpi) DECLSPEC_HIDDEN;
  81 extern REAL pixels_to_units(REAL pixels, GpUnit unit, REAL dpi) DECLSPEC_HIDDEN;
  82 extern REAL units_scale(GpUnit from, GpUnit to, REAL dpi) DECLSPEC_HIDDEN;
  83
  84 extern GpStatus graphics_from_image(GpImage *image, GpGraphics **graphics) DECLSPEC_HIDDEN;
  85
  86 extern GpStatus METAFILE_GetGraphicsContext(GpMetafile* metafile, GpGraphics **result) DECLSPEC_HIDDEN;
  87 extern GpStatus METAFILE_GetDC(GpMetafile* metafile, HDC *hdc) DECLSPEC_HIDDEN;
  88 extern GpStatus METAFILE_ReleaseDC(GpMetafile* metafile, HDC hdc) DECLSPEC_HIDDEN;
  89 extern GpStatus METAFILE_GraphicsClear(GpMetafile* metafile, ARGB color) DECLSPEC_HIDDEN;
  90 extern GpStatus METAFILE_FillRectangles(GpMetafile* metafile, GpBrush* brush,
  91     GDIPCONST GpRectF* rects, INT count) DECLSPEC_HIDDEN;
  92 extern GpStatus METAFILE_SetPageTransform(GpMetafile* metafile, GpUnit unit, REAL scale) DECLSPEC_HIDDEN;
  93 extern GpStatus METAFILE_GraphicsDeleted(GpMetafile* metafile) DECLSPEC_HIDDEN;
  94
  95 extern void calc_curve_bezier(const GpPointF *pts, REAL tension, REAL *x1,
  96     REAL *y1, REAL *x2, REAL *y2) DECLSPEC_HIDDEN;
  97 extern void calc_curve_bezier_endp(REAL xend, REAL yend, REAL xadj, REAL yadj,
  98     REAL tension, REAL *x, REAL *y) DECLSPEC_HIDDEN;
  99
 100 extern void free_installed_fonts(void) DECLSPEC_HIDDEN;
 101
 102 extern BOOL lengthen_path(GpPath *path, INT len) DECLSPEC_HIDDEN;
 103
 104 extern GpStatus trace_path(GpGraphics *graphics, GpPath *path) DECLSPEC_HIDDEN;
 105
 106 typedef struct region_element region_element;
 107 extern void delete_element(region_element *element) DECLSPEC_HIDDEN;
 108
 109 extern GpStatus get_hatch_data(HatchStyle hatchstyle, const char **result) DECLSPEC_HIDDEN;
 110
 111 static inline INT gdip_round(REAL x)
 112 {
 113     return (INT) floorf(x + 0.5);
 114 }
 115
 116 static inline INT ceilr(REAL x)
 117 {
 118     return (INT) ceilf(x);
 119 }
 120
 121 static inline REAL deg2rad(REAL degrees)
 122 {
 123     return M_PI * degrees / 180.0;
 124 }
 125
 126 static inline ARGB color_over(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 == 0xff) return fg;
 134
 135     if (fg_alpha == 0) return bg;
 136
 137     bg_alpha = (((bg>>24)&0xff) * (0xff-fg_alpha)) / 0xff;
 138
 139     if (bg_alpha == 0) return fg;
 140
 141     a = bg_alpha + fg_alpha;
 142     b = ((bg&0xff)*bg_alpha + (fg&0xff)*fg_alpha)/a;
 143     g = (((bg>>8)&0xff)*bg_alpha + ((fg>>8)&0xff)*fg_alpha)/a;
 144     r = (((bg>>16)&0xff)*bg_alpha + ((fg>>16)&0xff)*fg_alpha)/a;
 145
 146     return (a<<24)|(r<<16)|(g<<8)|b;
 147 }
 148
 149 /* fg is premult, bg and return value are not */
 150 static inline ARGB color_over_fgpremult(ARGB bg, ARGB fg)
 151 {
 152     BYTE b, g, r, a;
 153     BYTE bg_alpha, fg_alpha;
 154
 155     fg_alpha = (fg>>24)&0xff;
 156
 157     if (fg_alpha == 0) return bg;
 158
 159     bg_alpha = (((bg>>24)&0xff) * (0xff-fg_alpha)) / 0xff;
 160
 161     a = bg_alpha + fg_alpha;
 162     b = ((bg&0xff)*bg_alpha + (fg&0xff)*0xff)/a;
 163     g = (((bg>>8)&0xff)*bg_alpha + ((fg>>8)&0xff)*0xff)/a;
 164     r = (((bg>>16)&0xff)*bg_alpha + ((fg>>16)&0xff)*0xff)/a;
 165
 166     return (a<<24)|(r<<16)|(g<<8)|b;
 167 }
 168
 169 extern const char *debugstr_rectf(const RectF* rc) DECLSPEC_HIDDEN;
 170
 171 extern const char *debugstr_pointf(const PointF* pt) DECLSPEC_HIDDEN;
 172
 173 extern void convert_32bppARGB_to_32bppPARGB(UINT width, UINT height,
 174     BYTE *dst_bits, INT dst_stride, const BYTE *src_bits, INT src_stride) DECLSPEC_HIDDEN;
 175
 176 extern GpStatus convert_pixels(INT width, INT height,
 177     INT dst_stride, BYTE *dst_bits, PixelFormat dst_format,
 178     INT src_stride, const BYTE *src_bits, PixelFormat src_format, ColorPalette *palette) DECLSPEC_HIDDEN;
 179
 180 extern PixelFormat apply_image_attributes(const GpImageAttributes *attributes, LPBYTE data,
 181     UINT width, UINT height, INT stride, ColorAdjustType type, PixelFormat fmt) DECLSPEC_HIDDEN;
 182
 183 struct GpMatrix{
 184     REAL matrix[6];
 185 };
 186
 187 struct GpPen{
 188     UINT style;
 189     GpUnit unit;
 190     REAL width;
 191     GpLineCap endcap;
 192     GpLineCap startcap;
 193     GpDashCap dashcap;
 194     GpCustomLineCap *customstart;
 195     GpCustomLineCap *customend;
 196     GpLineJoin join;
 197     REAL miterlimit;
 198     GpDashStyle dash;
 199     REAL *dashes;
 200     INT numdashes;
 201     REAL offset;    /* dash offset */
 202     GpBrush *brush;
 203     GpPenAlignment align;
 204     GpMatrix transform;
 205 };
 206
 207 struct GpGraphics{
 208     HDC hdc;
 209     HWND hwnd;
 210     BOOL owndc;
 211     BOOL alpha_hdc;
 212     GpImage *image;
 213     ImageType image_type;
 214     SmoothingMode smoothing;
 215     CompositingQuality compqual;
 216     InterpolationMode interpolation;
 217     PixelOffsetMode pixeloffset;
 218     CompositingMode compmode;
 219     TextRenderingHint texthint;
 220     GpUnit unit;    /* page unit */
 221     REAL scale;     /* page scale */
 222     REAL xres, yres;
 223     GpMatrix worldtrans; /* world transform */
 224     BOOL busy;      /* hdc handle obtained by GdipGetDC */
 225     GpRegion *clip; /* in device coords */
 226     UINT textcontrast; /* not used yet. get/set only */
 227     struct list containers;
 228     GraphicsContainer contid; /* last-issued container ID */
 229     INT origin_x, origin_y;
 230     /* For giving the caller an HDC when we technically can't: */
 231     HBITMAP temp_hbitmap;
 232     int temp_hbitmap_width;
 233     int temp_hbitmap_height;
 234     BYTE *temp_bits;
 235     HDC temp_hdc;
 236 };
 237
 238 struct GpBrush{
 239     GpBrushType bt;
 240 };
 241
 242 struct GpHatch{
 243     GpBrush brush;
 244     HatchStyle hatchstyle;
 245     ARGB forecol;
 246     ARGB backcol;
 247 };
 248
 249 struct GpSolidFill{
 250     GpBrush brush;
 251     ARGB color;
 252 };
 253
 254 struct GpPathGradient{
 255     GpBrush brush;
 256     GpPath* path;
 257     ARGB centercolor;
 258     GpWrapMode wrap;
 259     BOOL gamma;
 260     GpPointF center;
 261     GpPointF focus;
 262     REAL* blendfac;  /* blend factors */
 263     REAL* blendpos;  /* blend positions */
 264     INT blendcount;
 265     ARGB *surroundcolors;
 266     INT surroundcolorcount;
 267     ARGB* pblendcolor; /* preset blend colors */
 268     REAL* pblendpos; /* preset blend positions */
 269     INT pblendcount;
 270     GpMatrix transform;
 271 };
 272
 273 struct GpLineGradient{
 274     GpBrush brush;
 275     GpPointF startpoint;
 276     GpPointF endpoint;
 277     ARGB startcolor;
 278     ARGB endcolor;
 279     RectF rect;
 280     GpWrapMode wrap;
 281     BOOL gamma;
 282     REAL* blendfac;  /* blend factors */
 283     REAL* blendpos;  /* blend positions */
 284     INT blendcount;
 285     ARGB* pblendcolor; /* preset blend colors */
 286     REAL* pblendpos; /* preset blend positions */
 287     INT pblendcount;
 288 };
 289
 290 struct GpTexture{
 291     GpBrush brush;
 292     GpMatrix transform;
 293     GpImage *image;
 294     GpImageAttributes *imageattributes;
 295     BYTE *bitmap_bits; /* image bits converted to ARGB and run through imageattributes */
 296 };
 297
 298 struct GpPath{
 299     GpFillMode fill;
 300     GpPathData pathdata;
 301     BOOL newfigure; /* whether the next drawing action starts a new figure */
 302     INT datalen; /* size of the arrays in pathdata */
 303 };
 304
 305 struct GpPathIterator{
 306     GpPathData pathdata;
 307     INT subpath_pos;    /* for NextSubpath methods */
 308     INT marker_pos;     /* for NextMarker methods */
 309     INT pathtype_pos;   /* for NextPathType methods */
 310 };
 311
 312 struct GpCustomLineCap{
 313     GpPathData pathdata;
 314     BOOL fill;      /* TRUE for fill, FALSE for stroke */
 315     GpLineCap cap;  /* as far as I can tell, this value is ignored */
 316     REAL inset;     /* how much to adjust the end of the line */
 317     GpLineJoin join;
 318     REAL scale;
 319 };
 320
 321 struct GpAdjustableArrowCap{
 322     GpCustomLineCap cap;
 323 };
 324
 325 struct GpImage{
 326     IPicture *picture;
 327     IWICBitmapDecoder *decoder;
 328     ImageType type;
 329     GUID format;
 330     UINT flags;
 331     UINT frame_count, current_frame;
 332     ColorPalette *palette;
 333     REAL xres, yres;
 334 };
 335
 336 struct GpMetafile{
 337     GpImage image;
 338     GpRectF bounds;
 339     GpUnit unit;
 340     MetafileType metafile_type;
 341     HENHMETAFILE hemf;
 342     int preserve_hemf; /* if true, hemf belongs to the app and should not be deleted */
 343
 344     /* recording */
 345     HDC record_dc;
 346     GpGraphics *record_graphics;
 347     BYTE *comment_data;
 348     DWORD comment_data_size;
 349     DWORD comment_data_length;
 350     IStream *record_stream;
 351     BOOL auto_frame; /* If true, determine the frame automatically */
 352     GpPointF auto_frame_min, auto_frame_max;
 353
 354     /* playback */
 355     GpGraphics *playback_graphics;
 356     HDC playback_dc;
 357     GpPointF playback_points[3];
 358     GpRectF src_rect;
 359     HANDLETABLE *handle_table;
 360     int handle_count;
 361     GpMatrix *world_transform;
 362     GpUnit page_unit;
 363     REAL page_scale;
 364     GpRegion *base_clip; /* clip region in device space for all metafile output */
 365 };
 366
 367 struct GpBitmap{
 368     GpImage image;
 369     INT width;
 370     INT height;
 371     PixelFormat format;
 372     ImageLockMode lockmode;
 373     INT numlocks;
 374     BYTE *bitmapbits;   /* pointer to the buffer we passed in BitmapLockBits */
 375     HBITMAP hbitmap;
 376     HDC hdc;
 377     BYTE *bits; /* actual image bits if this is a DIB */
 378     INT stride; /* stride of bits if this is a DIB */
 379     BYTE *own_bits; /* image bits that need to be freed with this object */
 380     INT lockx, locky; /* X and Y coordinates of the rect when a bitmap is locked for writing. */
 381     IWICMetadataReader *metadata_reader; /* NULL if there is no metadata */
 382     UINT prop_count;
 383     PropertyItem *prop_item; /* cached image properties */
 384 };
 385
 386 struct GpCachedBitmap{
 387     GpImage *image;
 388 };
 389
 390 struct color_key{
 391     BOOL enabled;
 392     ARGB low;
 393     ARGB high;
 394 };
 395
 396 struct color_matrix{
 397     BOOL enabled;
 398     ColorMatrixFlags flags;
 399     ColorMatrix colormatrix;
 400     ColorMatrix graymatrix;
 401 };
 402
 403 struct color_remap_table{
 404     BOOL enabled;
 405     INT mapsize;
 406     ColorMap *colormap;
 407 };
 408
 409 struct GpImageAttributes{
 410     WrapMode wrap;
 411     ARGB outside_color;
 412     BOOL clamp;
 413     struct color_key colorkeys[ColorAdjustTypeCount];
 414     struct color_matrix colormatrices[ColorAdjustTypeCount];
 415     struct color_remap_table colorremaptables[ColorAdjustTypeCount];
 416     BOOL gamma_enabled[ColorAdjustTypeCount];
 417     REAL gamma[ColorAdjustTypeCount];
 418 };
 419
 420 struct GpFont{
 421     GpFontFamily *family;
 422     OUTLINETEXTMETRICW otm;
 423     REAL emSize; /* in font units */
 424     Unit unit;
 425 };
 426
 427 struct GpStringFormat{
 428     INT attr;
 429     LANGID lang;
 430     LANGID digitlang;
 431     StringAlignment align;
 432     StringTrimming trimming;
 433     HotkeyPrefix hkprefix;
 434     StringAlignment vertalign;
 435     StringDigitSubstitute digitsub;
 436     INT tabcount;
 437     REAL firsttab;
 438     REAL *tabs;
 439     CharacterRange *character_ranges;
 440     INT range_count;
 441     BOOL generic_typographic;
 442 };
 443
 444 struct GpFontCollection{
 445     GpFontFamily **FontFamilies;
 446     INT count;
 447     INT allocated;
 448 };
 449
 450 struct GpFontFamily{
 451     WCHAR FamilyName[LF_FACESIZE];
 452     UINT16 em_height, ascent, descent, line_spacing; /* in font units */
 453     int dpi;
 454 };
 455
 456 /* internal use */
 457 typedef enum RegionType
 458 {
 459     RegionDataRect          = 0x10000000,
 460     RegionDataPath          = 0x10000001,
 461     RegionDataEmptyRect     = 0x10000002,
 462     RegionDataInfiniteRect  = 0x10000003,
 463 } RegionType;
 464
 465 struct region_element
 466 {
 467     DWORD type; /* Rectangle, Path, SpecialRectangle, or CombineMode */
 468     union
 469     {
 470         GpRectF rect;
 471         GpPath *path;
 472         struct
 473         {
 474             struct region_element *left;  /* the original region */
 475             struct region_element *right; /* what *left was combined with */
 476         } combine;
 477     } elementdata;
 478 };
 479
 480 struct GpRegion{
 481     DWORD num_children;
 482     region_element node;
 483 };
 484
 485 typedef GpStatus (*gdip_format_string_callback)(HDC hdc,
 486     GDIPCONST WCHAR *string, INT index, INT length, GDIPCONST GpFont *font,
 487     GDIPCONST RectF *rect, GDIPCONST GpStringFormat *format,
 488     INT lineno, const RectF *bounds, INT *underlined_indexes,
 489     INT underlined_index_count, void *user_data);
 490
 491 GpStatus gdip_format_string(HDC hdc,
 492     GDIPCONST WCHAR *string, INT length, GDIPCONST GpFont *font,
 493     GDIPCONST RectF *rect, GDIPCONST GpStringFormat *format, int ignore_empty_clip,
 494     gdip_format_string_callback callback, void *user_data) DECLSPEC_HIDDEN;
 495
 496 void get_log_fontW(const GpFont *, GpGraphics *, LOGFONTW *) DECLSPEC_HIDDEN;
 497
 498 #endif