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