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_ScaleWorldTransform(GpMetafile* metafile, REAL sx, REAL sy, MatrixOrder order) DECLSPEC_HIDDEN;
  94 extern GpStatus METAFILE_ResetWorldTransform(GpMetafile* metafile) DECLSPEC_HIDDEN;
  95 extern GpStatus METAFILE_GraphicsDeleted(GpMetafile* metafile) DECLSPEC_HIDDEN;
  96
  97 extern void calc_curve_bezier(const GpPointF *pts, REAL tension, REAL *x1,
  98     REAL *y1, REAL *x2, REAL *y2) DECLSPEC_HIDDEN;
  99 extern void calc_curve_bezier_endp(REAL xend, REAL yend, REAL xadj, REAL yadj,
 100     REAL tension, REAL *x, REAL *y) DECLSPEC_HIDDEN;
 101
 102 extern void free_installed_fonts(void) DECLSPEC_HIDDEN;
 103
 104 extern BOOL lengthen_path(GpPath *path, INT len) DECLSPEC_HIDDEN;
 105
 106 extern GpStatus trace_path(GpGraphics *graphics, GpPath *path) DECLSPEC_HIDDEN;
 107
 108 typedef struct region_element region_element;
 109 extern void delete_element(region_element *element) DECLSPEC_HIDDEN;
 110
 111 extern GpStatus get_hatch_data(HatchStyle hatchstyle, const char **result) DECLSPEC_HIDDEN;
 112
 113 static inline INT gdip_round(REAL x)
 114 {
 115     return (INT) floorf(x + 0.5);
 116 }
 117
 118 static inline INT ceilr(REAL x)
 119 {
 120     return (INT) ceilf(x);
 121 }
 122
 123 static inline REAL deg2rad(REAL degrees)
 124 {
 125     return M_PI * degrees / 180.0;
 126 }
 127
 128 static inline ARGB color_over(ARGB bg, ARGB fg)
 129 {
 130     BYTE b, g, r, a;
 131     BYTE bg_alpha, fg_alpha;
 132
 133     fg_alpha = (fg>>24)&0xff;
 134
 135     if (fg_alpha == 0xff) return fg;
 136
 137     if (fg_alpha == 0) return bg;
 138
 139     bg_alpha = (((bg>>24)&0xff) * (0xff-fg_alpha)) / 0xff;
 140
 141     if (bg_alpha == 0) return fg;
 142
 143     a = bg_alpha + fg_alpha;
 144     b = ((bg&0xff)*bg_alpha + (fg&0xff)*fg_alpha)/a;
 145     g = (((bg>>8)&0xff)*bg_alpha + ((fg>>8)&0xff)*fg_alpha)/a;
 146     r = (((bg>>16)&0xff)*bg_alpha + ((fg>>16)&0xff)*fg_alpha)/a;
 147
 148     return (a<<24)|(r<<16)|(g<<8)|b;
 149 }
 150
 151 /* fg is premult, bg and return value are not */
 152 static inline ARGB color_over_fgpremult(ARGB bg, ARGB fg)
 153 {
 154     BYTE b, g, r, a;
 155     BYTE bg_alpha, fg_alpha;
 156
 157     fg_alpha = (fg>>24)&0xff;
 158
 159     if (fg_alpha == 0) return bg;
 160
 161     bg_alpha = (((bg>>24)&0xff) * (0xff-fg_alpha)) / 0xff;
 162
 163     a = bg_alpha + fg_alpha;
 164     b = ((bg&0xff)*bg_alpha + (fg&0xff)*0xff)/a;
 165     g = (((bg>>8)&0xff)*bg_alpha + ((fg>>8)&0xff)*0xff)/a;
 166     r = (((bg>>16)&0xff)*bg_alpha + ((fg>>16)&0xff)*0xff)/a;
 167
 168     return (a<<24)|(r<<16)|(g<<8)|b;
 169 }
 170
 171 extern const char *debugstr_rectf(const RectF* rc) DECLSPEC_HIDDEN;
 172
 173 extern const char *debugstr_pointf(const PointF* pt) DECLSPEC_HIDDEN;
 174
 175 extern void convert_32bppARGB_to_32bppPARGB(UINT width, UINT height,
 176     BYTE *dst_bits, INT dst_stride, const BYTE *src_bits, INT src_stride) DECLSPEC_HIDDEN;
 177
 178 extern GpStatus convert_pixels(INT width, INT height,
 179     INT dst_stride, BYTE *dst_bits, PixelFormat dst_format,
 180     INT src_stride, const BYTE *src_bits, PixelFormat src_format, ColorPalette *palette) DECLSPEC_HIDDEN;
 181
 182 extern PixelFormat apply_image_attributes(const GpImageAttributes *attributes, LPBYTE data,
 183     UINT width, UINT height, INT stride, ColorAdjustType type, PixelFormat fmt) DECLSPEC_HIDDEN;
 184
 185 struct GpMatrix{
 186     REAL matrix[6];
 187 };
 188
 189 struct GpPen{
 190     UINT style;
 191     GpUnit unit;
 192     REAL width;
 193     GpLineCap endcap;
 194     GpLineCap startcap;
 195     GpDashCap dashcap;
 196     GpCustomLineCap *customstart;
 197     GpCustomLineCap *customend;
 198     GpLineJoin join;
 199     REAL miterlimit;
 200     GpDashStyle dash;
 201     REAL *dashes;
 202     INT numdashes;
 203     REAL offset;    /* dash offset */
 204     GpBrush *brush;
 205     GpPenAlignment align;
 206     GpMatrix transform;
 207 };
 208
 209 struct GpGraphics{
 210     HDC hdc;
 211     HWND hwnd;
 212     BOOL owndc;
 213     BOOL alpha_hdc;
 214     GpImage *image;
 215     ImageType image_type;
 216     SmoothingMode smoothing;
 217     CompositingQuality compqual;
 218     InterpolationMode interpolation;
 219     PixelOffsetMode pixeloffset;
 220     CompositingMode compmode;
 221     TextRenderingHint texthint;
 222     GpUnit unit;    /* page unit */
 223     REAL scale;     /* page scale */
 224     REAL xres, yres;
 225     GpMatrix worldtrans; /* world transform */
 226     BOOL busy;      /* hdc handle obtained by GdipGetDC */
 227     GpRegion *clip; /* in device coords */
 228     UINT textcontrast; /* not used yet. get/set only */
 229     struct list containers;
 230     GraphicsContainer contid; /* last-issued container ID */
 231     INT origin_x, origin_y;
 232     /* For giving the caller an HDC when we technically can't: */
 233     HBITMAP temp_hbitmap;
 234     int temp_hbitmap_width;
 235     int temp_hbitmap_height;
 236     BYTE *temp_bits;
 237     HDC temp_hdc;
 238 };
 239
 240 struct GpBrush{
 241     GpBrushType bt;
 242 };
 243
 244 struct GpHatch{
 245     GpBrush brush;
 246     HatchStyle hatchstyle;
 247     ARGB forecol;
 248     ARGB backcol;
 249 };
 250
 251 struct GpSolidFill{
 252     GpBrush brush;
 253     ARGB color;
 254 };
 255
 256 struct GpPathGradient{
 257     GpBrush brush;
 258     GpPath* path;
 259     ARGB centercolor;
 260     GpWrapMode wrap;
 261     BOOL gamma;
 262     GpPointF center;
 263     GpPointF focus;
 264     REAL* blendfac;  /* blend factors */
 265     REAL* blendpos;  /* blend positions */
 266     INT blendcount;
 267     ARGB *surroundcolors;
 268     INT surroundcolorcount;
 269     ARGB* pblendcolor; /* preset blend colors */
 270     REAL* pblendpos; /* preset blend positions */
 271     INT pblendcount;
 272     GpMatrix transform;
 273 };
 274
 275 struct GpLineGradient{
 276     GpBrush brush;
 277     GpPointF startpoint;
 278     GpPointF endpoint;
 279     ARGB startcolor;
 280     ARGB endcolor;
 281     RectF rect;
 282     GpWrapMode wrap;
 283     BOOL gamma;
 284     REAL* blendfac;  /* blend factors */
 285     REAL* blendpos;  /* blend positions */
 286     INT blendcount;
 287     ARGB* pblendcolor; /* preset blend colors */
 288     REAL* pblendpos; /* preset blend positions */
 289     INT pblendcount;
 290 };
 291
 292 struct GpTexture{
 293     GpBrush brush;
 294     GpMatrix transform;
 295     GpImage *image;
 296     GpImageAttributes *imageattributes;
 297     BYTE *bitmap_bits; /* image bits converted to ARGB and run through imageattributes */
 298 };
 299
 300 struct GpPath{
 301     GpFillMode fill;
 302     GpPathData pathdata;
 303     BOOL newfigure; /* whether the next drawing action starts a new figure */
 304     INT datalen; /* size of the arrays in pathdata */
 305 };
 306
 307 struct GpPathIterator{
 308     GpPathData pathdata;
 309     INT subpath_pos;    /* for NextSubpath methods */
 310     INT marker_pos;     /* for NextMarker methods */
 311     INT pathtype_pos;   /* for NextPathType methods */
 312 };
 313
 314 struct GpCustomLineCap{
 315     GpPathData pathdata;
 316     BOOL fill;      /* TRUE for fill, FALSE for stroke */
 317     GpLineCap cap;  /* as far as I can tell, this value is ignored */
 318     REAL inset;     /* how much to adjust the end of the line */
 319     GpLineJoin join;
 320     REAL scale;
 321 };
 322
 323 struct GpAdjustableArrowCap{
 324     GpCustomLineCap cap;
 325 };
 326
 327 struct GpImage{
 328     IPicture *picture;
 329     IWICBitmapDecoder *decoder;
 330     ImageType type;
 331     GUID format;
 332     UINT flags;
 333     UINT frame_count, current_frame;
 334     ColorPalette *palette;
 335     REAL xres, yres;
 336 };
 337
 338 struct GpMetafile{
 339     GpImage image;
 340     GpRectF bounds;
 341     GpUnit unit;
 342     MetafileType metafile_type;
 343     HENHMETAFILE hemf;
 344     int preserve_hemf; /* if true, hemf belongs to the app and should not be deleted */
 345
 346     /* recording */
 347     HDC record_dc;
 348     GpGraphics *record_graphics;
 349     BYTE *comment_data;
 350     DWORD comment_data_size;
 351     DWORD comment_data_length;
 352     IStream *record_stream;
 353     BOOL auto_frame; /* If true, determine the frame automatically */
 354     GpPointF auto_frame_min, auto_frame_max;
 355
 356     /* playback */
 357     GpGraphics *playback_graphics;
 358     HDC playback_dc;
 359     GpPointF playback_points[3];
 360     GpRectF src_rect;
 361     HANDLETABLE *handle_table;
 362     int handle_count;
 363     GpMatrix *world_transform;
 364     GpUnit page_unit;
 365     REAL page_scale;
 366     GpRegion *base_clip; /* clip region in device space for all metafile output */
 367 };
 368
 369 struct GpBitmap{
 370     GpImage image;
 371     INT width;
 372     INT height;
 373     PixelFormat format;
 374     ImageLockMode lockmode;
 375     INT numlocks;
 376     BYTE *bitmapbits;   /* pointer to the buffer we passed in BitmapLockBits */
 377     HBITMAP hbitmap;
 378     HDC hdc;
 379     BYTE *bits; /* actual image bits if this is a DIB */
 380     INT stride; /* stride of bits if this is a DIB */
 381     BYTE *own_bits; /* image bits that need to be freed with this object */
 382     INT lockx, locky; /* X and Y coordinates of the rect when a bitmap is locked for writing. */
 383     IWICMetadataReader *metadata_reader; /* NULL if there is no metadata */
 384     UINT prop_count;
 385     PropertyItem *prop_item; /* cached image properties */
 386 };
 387
 388 struct GpCachedBitmap{
 389     GpImage *image;
 390 };
 391
 392 struct color_key{
 393     BOOL enabled;
 394     ARGB low;
 395     ARGB high;
 396 };
 397
 398 struct color_matrix{
 399     BOOL enabled;
 400     ColorMatrixFlags flags;
 401     ColorMatrix colormatrix;
 402     ColorMatrix graymatrix;
 403 };
 404
 405 struct color_remap_table{
 406     BOOL enabled;
 407     INT mapsize;
 408     ColorMap *colormap;
 409 };
 410
 411 struct GpImageAttributes{
 412     WrapMode wrap;
 413     ARGB outside_color;
 414     BOOL clamp;
 415     struct color_key colorkeys[ColorAdjustTypeCount];
 416     struct color_matrix colormatrices[ColorAdjustTypeCount];
 417     struct color_remap_table colorremaptables[ColorAdjustTypeCount];
 418     BOOL gamma_enabled[ColorAdjustTypeCount];
 419     REAL gamma[ColorAdjustTypeCount];
 420 };
 421
 422 struct GpFont{
 423     GpFontFamily *family;
 424     OUTLINETEXTMETRICW otm;
 425     REAL emSize; /* in font units */
 426     Unit unit;
 427 };
 428
 429 struct GpStringFormat{
 430     INT attr;
 431     LANGID lang;
 432     LANGID digitlang;
 433     StringAlignment align;
 434     StringTrimming trimming;
 435     HotkeyPrefix hkprefix;
 436     StringAlignment vertalign;
 437     StringDigitSubstitute digitsub;
 438     INT tabcount;
 439     REAL firsttab;
 440     REAL *tabs;
 441     CharacterRange *character_ranges;
 442     INT range_count;
 443     BOOL generic_typographic;
 444 };
 445
 446 struct GpFontCollection{
 447     GpFontFamily **FontFamilies;
 448     INT count;
 449     INT allocated;
 450 };
 451
 452 struct GpFontFamily{
 453     WCHAR FamilyName[LF_FACESIZE];
 454     UINT16 em_height, ascent, descent, line_spacing; /* in font units */
 455     int dpi;
 456 };
 457
 458 /* internal use */
 459 typedef enum RegionType
 460 {
 461     RegionDataRect          = 0x10000000,
 462     RegionDataPath          = 0x10000001,
 463     RegionDataEmptyRect     = 0x10000002,
 464     RegionDataInfiniteRect  = 0x10000003,
 465 } RegionType;
 466
 467 struct region_element
 468 {
 469     DWORD type; /* Rectangle, Path, SpecialRectangle, or CombineMode */
 470     union
 471     {
 472         GpRectF rect;
 473         GpPath *path;
 474         struct
 475         {
 476             struct region_element *left;  /* the original region */
 477             struct region_element *right; /* what *left was combined with */
 478         } combine;
 479     } elementdata;
 480 };
 481
 482 struct GpRegion{
 483     DWORD num_children;
 484     region_element node;
 485 };
 486
 487 typedef GpStatus (*gdip_format_string_callback)(HDC hdc,
 488     GDIPCONST WCHAR *string, INT index, INT length, GDIPCONST GpFont *font,
 489     GDIPCONST RectF *rect, GDIPCONST GpStringFormat *format,
 490     INT lineno, const RectF *bounds, INT *underlined_indexes,
 491     INT underlined_index_count, void *user_data);
 492
 493 GpStatus gdip_format_string(HDC hdc,
 494     GDIPCONST WCHAR *string, INT length, GDIPCONST GpFont *font,
 495     GDIPCONST RectF *rect, GDIPCONST GpStringFormat *format, int ignore_empty_clip,
 496     gdip_format_string_callback callback, void *user_data) DECLSPEC_HIDDEN;
 497
 498 void get_log_fontW(const GpFont *, GpGraphics *, LOGFONTW *) DECLSPEC_HIDDEN;
 499
 500 #endif