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