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_FillRectangles(GpMetafile* metafile, GpBrush* brush,
  90     GDIPCONST GpRectF* rects, INT count) DECLSPEC_HIDDEN;
  91 extern GpStatus METAFILE_SetPageTransform(GpMetafile* metafile, GpUnit unit, REAL scale) DECLSPEC_HIDDEN;
  92 extern GpStatus METAFILE_GraphicsDeleted(GpMetafile* metafile) DECLSPEC_HIDDEN;
  93
  94 extern void calc_curve_bezier(const GpPointF *pts, REAL tension, REAL *x1,
  95     REAL *y1, REAL *x2, REAL *y2) DECLSPEC_HIDDEN;
  96 extern void calc_curve_bezier_endp(REAL xend, REAL yend, REAL xadj, REAL yadj,
  97     REAL tension, REAL *x, REAL *y) DECLSPEC_HIDDEN;
  98
  99 extern void free_installed_fonts(void) DECLSPEC_HIDDEN;
 100
 101 extern BOOL lengthen_path(GpPath *path, INT len) DECLSPEC_HIDDEN;
 102
 103 extern GpStatus trace_path(GpGraphics *graphics, GpPath *path) DECLSPEC_HIDDEN;
 104
 105 typedef struct region_element region_element;
 106 extern void delete_element(region_element *element) DECLSPEC_HIDDEN;
 107
 108 extern GpStatus get_hatch_data(HatchStyle hatchstyle, const char **result) DECLSPEC_HIDDEN;
 109
 110 static inline INT gdip_round(REAL x)
 111 {
 112     return (INT) floorf(x + 0.5);
 113 }
 114
 115 static inline INT ceilr(REAL x)
 116 {
 117     return (INT) ceilf(x);
 118 }
 119
 120 static inline REAL deg2rad(REAL degrees)
 121 {
 122     return M_PI * degrees / 180.0;
 123 }
 124
 125 static inline ARGB color_over(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 == 0xff) return fg;
 133
 134     if (fg_alpha == 0) return bg;
 135
 136     bg_alpha = (((bg>>24)&0xff) * (0xff-fg_alpha)) / 0xff;
 137
 138     if (bg_alpha == 0) return fg;
 139
 140     a = bg_alpha + fg_alpha;
 141     b = ((bg&0xff)*bg_alpha + (fg&0xff)*fg_alpha)/a;
 142     g = (((bg>>8)&0xff)*bg_alpha + ((fg>>8)&0xff)*fg_alpha)/a;
 143     r = (((bg>>16)&0xff)*bg_alpha + ((fg>>16)&0xff)*fg_alpha)/a;
 144
 145     return (a<<24)|(r<<16)|(g<<8)|b;
 146 }
 147
 148 /* fg is premult, bg and return value are not */
 149 static inline ARGB color_over_fgpremult(ARGB bg, ARGB fg)
 150 {
 151     BYTE b, g, r, a;
 152     BYTE bg_alpha, fg_alpha;
 153
 154     fg_alpha = (fg>>24)&0xff;
 155
 156     if (fg_alpha == 0) return bg;
 157
 158     bg_alpha = (((bg>>24)&0xff) * (0xff-fg_alpha)) / 0xff;
 159
 160     a = bg_alpha + fg_alpha;
 161     b = ((bg&0xff)*bg_alpha + (fg&0xff)*0xff)/a;
 162     g = (((bg>>8)&0xff)*bg_alpha + ((fg>>8)&0xff)*0xff)/a;
 163     r = (((bg>>16)&0xff)*bg_alpha + ((fg>>16)&0xff)*0xff)/a;
 164
 165     return (a<<24)|(r<<16)|(g<<8)|b;
 166 }
 167
 168 extern const char *debugstr_rectf(const RectF* rc) DECLSPEC_HIDDEN;
 169
 170 extern const char *debugstr_pointf(const PointF* pt) DECLSPEC_HIDDEN;
 171
 172 extern void convert_32bppARGB_to_32bppPARGB(UINT width, UINT height,
 173     BYTE *dst_bits, INT dst_stride, const BYTE *src_bits, INT src_stride) DECLSPEC_HIDDEN;
 174
 175 extern GpStatus convert_pixels(INT width, INT height,
 176     INT dst_stride, BYTE *dst_bits, PixelFormat dst_format,
 177     INT src_stride, const BYTE *src_bits, PixelFormat src_format, ColorPalette *palette) DECLSPEC_HIDDEN;
 178
 179 struct GpMatrix{
 180     REAL matrix[6];
 181 };
 182
 183 struct GpPen{
 184     UINT style;
 185     GpUnit unit;
 186     REAL width;
 187     GpLineCap endcap;
 188     GpLineCap startcap;
 189     GpDashCap dashcap;
 190     GpCustomLineCap *customstart;
 191     GpCustomLineCap *customend;
 192     GpLineJoin join;
 193     REAL miterlimit;
 194     GpDashStyle dash;
 195     REAL *dashes;
 196     INT numdashes;
 197     REAL offset;    /* dash offset */
 198     GpBrush *brush;
 199     GpPenAlignment align;
 200     GpMatrix transform;
 201 };
 202
 203 struct GpGraphics{
 204     HDC hdc;
 205     HWND hwnd;
 206     BOOL owndc;
 207     BOOL alpha_hdc;
 208     GpImage *image;
 209     ImageType image_type;
 210     SmoothingMode smoothing;
 211     CompositingQuality compqual;
 212     InterpolationMode interpolation;
 213     PixelOffsetMode pixeloffset;
 214     CompositingMode compmode;
 215     TextRenderingHint texthint;
 216     GpUnit unit;    /* page unit */
 217     REAL scale;     /* page scale */
 218     REAL xres, yres;
 219     GpMatrix worldtrans; /* world transform */
 220     BOOL busy;      /* hdc handle obtained by GdipGetDC */
 221     GpRegion *clip; /* in device coords */
 222     UINT textcontrast; /* not used yet. get/set only */
 223     struct list containers;
 224     GraphicsContainer contid; /* last-issued container ID */
 225     INT origin_x, origin_y;
 226     /* For giving the caller an HDC when we technically can't: */
 227     HBITMAP temp_hbitmap;
 228     int temp_hbitmap_width;
 229     int temp_hbitmap_height;
 230     BYTE *temp_bits;
 231     HDC temp_hdc;
 232 };
 233
 234 struct GpBrush{
 235     GpBrushType bt;
 236 };
 237
 238 struct GpHatch{
 239     GpBrush brush;
 240     HatchStyle hatchstyle;
 241     ARGB forecol;
 242     ARGB backcol;
 243 };
 244
 245 struct GpSolidFill{
 246     GpBrush brush;
 247     ARGB color;
 248 };
 249
 250 struct GpPathGradient{
 251     GpBrush brush;
 252     GpPath* path;
 253     ARGB centercolor;
 254     GpWrapMode wrap;
 255     BOOL gamma;
 256     GpPointF center;
 257     GpPointF focus;
 258     REAL* blendfac;  /* blend factors */
 259     REAL* blendpos;  /* blend positions */
 260     INT blendcount;
 261     ARGB *surroundcolors;
 262     INT surroundcolorcount;
 263     ARGB* pblendcolor; /* preset blend colors */
 264     REAL* pblendpos; /* preset blend positions */
 265     INT pblendcount;
 266     GpMatrix transform;
 267 };
 268
 269 struct GpLineGradient{
 270     GpBrush brush;
 271     GpPointF startpoint;
 272     GpPointF endpoint;
 273     ARGB startcolor;
 274     ARGB endcolor;
 275     RectF rect;
 276     GpWrapMode wrap;
 277     BOOL gamma;
 278     REAL* blendfac;  /* blend factors */
 279     REAL* blendpos;  /* blend positions */
 280     INT blendcount;
 281     ARGB* pblendcolor; /* preset blend colors */
 282     REAL* pblendpos; /* preset blend positions */
 283     INT pblendcount;
 284 };
 285
 286 struct GpTexture{
 287     GpBrush brush;
 288     GpMatrix transform;
 289     GpImage *image;
 290     GpImageAttributes *imageattributes;
 291     BYTE *bitmap_bits; /* image bits converted to ARGB and run through imageattributes */
 292 };
 293
 294 struct GpPath{
 295     GpFillMode fill;
 296     GpPathData pathdata;
 297     BOOL newfigure; /* whether the next drawing action starts a new figure */
 298     INT datalen; /* size of the arrays in pathdata */
 299 };
 300
 301 struct GpPathIterator{
 302     GpPathData pathdata;
 303     INT subpath_pos;    /* for NextSubpath methods */
 304     INT marker_pos;     /* for NextMarker methods */
 305     INT pathtype_pos;   /* for NextPathType methods */
 306 };
 307
 308 struct GpCustomLineCap{
 309     GpPathData pathdata;
 310     BOOL fill;      /* TRUE for fill, FALSE for stroke */
 311     GpLineCap cap;  /* as far as I can tell, this value is ignored */
 312     REAL inset;     /* how much to adjust the end of the line */
 313     GpLineJoin join;
 314     REAL scale;
 315 };
 316
 317 struct GpAdustableArrowCap{
 318     GpCustomLineCap cap;
 319 };
 320
 321 struct GpImage{
 322     IPicture *picture;
 323     IWICBitmapDecoder *decoder;
 324     ImageType type;
 325     GUID format;
 326     UINT flags;
 327     UINT frame_count, current_frame;
 328     ColorPalette *palette;
 329     REAL xres, yres;
 330 };
 331
 332 struct GpMetafile{
 333     GpImage image;
 334     GpRectF bounds;
 335     GpUnit unit;
 336     MetafileType metafile_type;
 337     HENHMETAFILE hemf;
 338     int preserve_hemf; /* if true, hemf belongs to the app and should not be deleted */
 339
 340     /* recording */
 341     HDC record_dc;
 342     GpGraphics *record_graphics;
 343     BYTE *comment_data;
 344     DWORD comment_data_size;
 345     DWORD comment_data_length;
 346     IStream *record_stream;
 347
 348     /* playback */
 349     GpGraphics *playback_graphics;
 350     HDC playback_dc;
 351     GpPointF playback_points[3];
 352     GpRectF src_rect;
 353     HANDLETABLE *handle_table;
 354     int handle_count;
 355     GpMatrix *world_transform;
 356     GpUnit page_unit;
 357     REAL page_scale;
 358 };
 359
 360 struct GpBitmap{
 361     GpImage image;
 362     INT width;
 363     INT height;
 364     PixelFormat format;
 365     ImageLockMode lockmode;
 366     INT numlocks;
 367     BYTE *bitmapbits;   /* pointer to the buffer we passed in BitmapLockBits */
 368     HBITMAP hbitmap;
 369     HDC hdc;
 370     BYTE *bits; /* actual image bits if this is a DIB */
 371     INT stride; /* stride of bits if this is a DIB */
 372     BYTE *own_bits; /* image bits that need to be freed with this object */
 373     INT lockx, locky; /* X and Y coordinates of the rect when a bitmap is locked for writing. */
 374     IWICMetadataReader *metadata_reader; /* NULL if there is no metadata */
 375     UINT prop_count;
 376     PropertyItem *prop_item; /* cached image properties */
 377 };
 378
 379 struct GpCachedBitmap{
 380     GpImage *image;
 381 };
 382
 383 struct color_key{
 384     BOOL enabled;
 385     ARGB low;
 386     ARGB high;
 387 };
 388
 389 struct color_matrix{
 390     BOOL enabled;
 391     ColorMatrixFlags flags;
 392     ColorMatrix colormatrix;
 393     ColorMatrix graymatrix;
 394 };
 395
 396 struct color_remap_table{
 397     BOOL enabled;
 398     INT mapsize;
 399     ColorMap *colormap;
 400 };
 401
 402 struct GpImageAttributes{
 403     WrapMode wrap;
 404     ARGB outside_color;
 405     BOOL clamp;
 406     struct color_key colorkeys[ColorAdjustTypeCount];
 407     struct color_matrix colormatrices[ColorAdjustTypeCount];
 408     struct color_remap_table colorremaptables[ColorAdjustTypeCount];
 409     BOOL gamma_enabled[ColorAdjustTypeCount];
 410     REAL gamma[ColorAdjustTypeCount];
 411 };
 412
 413 struct GpFont{
 414     GpFontFamily *family;
 415     OUTLINETEXTMETRICW otm;
 416     REAL emSize; /* in font units */
 417     Unit unit;
 418 };
 419
 420 struct GpStringFormat{
 421     INT attr;
 422     LANGID lang;
 423     LANGID digitlang;
 424     StringAlignment align;
 425     StringTrimming trimming;
 426     HotkeyPrefix hkprefix;
 427     StringAlignment vertalign;
 428     StringDigitSubstitute digitsub;
 429     INT tabcount;
 430     REAL firsttab;
 431     REAL *tabs;
 432     CharacterRange *character_ranges;
 433     INT range_count;
 434     BOOL generic_typographic;
 435 };
 436
 437 struct GpFontCollection{
 438     GpFontFamily **FontFamilies;
 439     INT count;
 440     INT allocated;
 441 };
 442
 443 struct GpFontFamily{
 444     WCHAR FamilyName[LF_FACESIZE];
 445     UINT16 em_height, ascent, descent, line_spacing; /* in font units */
 446     int dpi;
 447 };
 448
 449 /* internal use */
 450 typedef enum RegionType
 451 {
 452     RegionDataRect          = 0x10000000,
 453     RegionDataPath          = 0x10000001,
 454     RegionDataEmptyRect     = 0x10000002,
 455     RegionDataInfiniteRect  = 0x10000003,
 456 } RegionType;
 457
 458 struct region_element
 459 {
 460     DWORD type; /* Rectangle, Path, SpecialRectangle, or CombineMode */
 461     union
 462     {
 463         GpRectF rect;
 464         GpPath *path;
 465         struct
 466         {
 467             struct region_element *left;  /* the original region */
 468             struct region_element *right; /* what *left was combined with */
 469         } combine;
 470     } elementdata;
 471 };
 472
 473 struct GpRegion{
 474     DWORD num_children;
 475     region_element node;
 476 };
 477
 478 typedef GpStatus (*gdip_format_string_callback)(HDC hdc,
 479     GDIPCONST WCHAR *string, INT index, INT length, GDIPCONST GpFont *font,
 480     GDIPCONST RectF *rect, GDIPCONST GpStringFormat *format,
 481     INT lineno, const RectF *bounds, INT *underlined_indexes,
 482     INT underlined_index_count, void *user_data);
 483
 484 GpStatus gdip_format_string(HDC hdc,
 485     GDIPCONST WCHAR *string, INT length, GDIPCONST GpFont *font,
 486     GDIPCONST RectF *rect, GDIPCONST GpStringFormat *format, int ignore_empty_clip,
 487     gdip_format_string_callback callback, void *user_data) DECLSPEC_HIDDEN;
 488
 489 void get_log_fontW(const GpFont *, GpGraphics *, LOGFONTW *) DECLSPEC_HIDDEN;
 490
 491 #endif