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