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 "wine/list.h"
  33
  34 #include "gdiplus.h"
  35
  36 #define GP_DEFAULT_PENSTYLE (PS_GEOMETRIC | PS_SOLID | PS_ENDCAP_FLAT | PS_JOIN_MITER)
  37 #define MAX_ARC_PTS (13)
  38 #define MAX_DASHLEN (16) /* this is a limitation of gdi */
  39 #define INCH_HIMETRIC (2540)
  40
  41 #define VERSION_MAGIC 0xdbc01001
  42 #define TENSION_CONST (0.3)
  43
  44 COLORREF ARGB2COLORREF(ARGB color) DECLSPEC_HIDDEN;
  45 HBITMAP ARGB2BMP(ARGB color) DECLSPEC_HIDDEN;
  46 extern INT arc2polybezier(GpPointF * points, REAL x1, REAL y1, REAL x2, REAL y2,
  47     REAL startAngle, REAL sweepAngle) DECLSPEC_HIDDEN;
  48 extern REAL gdiplus_atan2(REAL dy, REAL dx) DECLSPEC_HIDDEN;
  49 extern GpStatus hresult_to_status(HRESULT res) DECLSPEC_HIDDEN;
  50 extern REAL convert_unit(REAL logpixels, GpUnit unit) DECLSPEC_HIDDEN;
  51
  52 extern GpStatus graphics_from_image(GpImage *image, GpGraphics **graphics) DECLSPEC_HIDDEN;
  53
  54 extern GpStatus METAFILE_GetGraphicsContext(GpMetafile* metafile, GpGraphics **result) DECLSPEC_HIDDEN;
  55 extern GpStatus METAFILE_GetDC(GpMetafile* metafile, HDC *hdc) DECLSPEC_HIDDEN;
  56 extern GpStatus METAFILE_ReleaseDC(GpMetafile* metafile, HDC hdc) DECLSPEC_HIDDEN;
  57 extern GpStatus METAFILE_GraphicsDeleted(GpMetafile* metafile) DECLSPEC_HIDDEN;
  58
  59 extern void calc_curve_bezier(CONST GpPointF *pts, REAL tension, REAL *x1,
  60     REAL *y1, REAL *x2, REAL *y2) DECLSPEC_HIDDEN;
  61 extern void calc_curve_bezier_endp(REAL xend, REAL yend, REAL xadj, REAL yadj,
  62     REAL tension, REAL *x, REAL *y) DECLSPEC_HIDDEN;
  63
  64 extern void free_installed_fonts(void) DECLSPEC_HIDDEN;
  65
  66 extern BOOL lengthen_path(GpPath *path, INT len) DECLSPEC_HIDDEN;
  67
  68 extern GpStatus trace_path(GpGraphics *graphics, GpPath *path) DECLSPEC_HIDDEN;
  69
  70 typedef struct region_element region_element;
  71 extern void delete_element(region_element *element) DECLSPEC_HIDDEN;
  72
  73 extern GpStatus get_hatch_data(HatchStyle hatchstyle, const char **result) DECLSPEC_HIDDEN;
  74
  75 static inline INT roundr(REAL x)
  76 {
  77     return (INT) floorf(x + 0.5);
  78 }
  79
  80 static inline INT ceilr(REAL x)
  81 {
  82     return (INT) ceilf(x);
  83 }
  84
  85 static inline REAL deg2rad(REAL degrees)
  86 {
  87     return M_PI * degrees / 180.0;
  88 }
  89
  90 static inline ARGB color_over(ARGB bg, ARGB fg)
  91 {
  92     BYTE b, g, r, a;
  93     BYTE bg_alpha, fg_alpha;
  94
  95     fg_alpha = (fg>>24)&0xff;
  96
  97     if (fg_alpha == 0xff) return fg;
  98
  99     if (fg_alpha == 0) return bg;
 100
 101     bg_alpha = (((bg>>24)&0xff) * (0xff-fg_alpha)) / 0xff;
 102
 103     if (bg_alpha == 0) return fg;
 104
 105     a = bg_alpha + fg_alpha;
 106     b = ((bg&0xff)*bg_alpha + (fg&0xff)*fg_alpha)/a;
 107     g = (((bg>>8)&0xff)*bg_alpha + ((fg>>8)&0xff)*fg_alpha)/a;
 108     r = (((bg>>16)&0xff)*bg_alpha + ((fg>>16)&0xff)*fg_alpha)/a;
 109
 110     return (a<<24)|(r<<16)|(g<<8)|b;
 111 }
 112
 113 extern const char *debugstr_rectf(CONST RectF* rc) DECLSPEC_HIDDEN;
 114
 115 extern const char *debugstr_pointf(CONST PointF* pt) DECLSPEC_HIDDEN;
 116
 117 extern void convert_32bppARGB_to_32bppPARGB(UINT width, UINT height,
 118     BYTE *dst_bits, INT dst_stride, const BYTE *src_bits, INT src_stride) DECLSPEC_HIDDEN;
 119
 120 extern GpStatus convert_pixels(INT width, INT height,
 121     INT dst_stride, BYTE *dst_bits, PixelFormat dst_format,
 122     INT src_stride, const BYTE *src_bits, PixelFormat src_format, ARGB *src_palette) DECLSPEC_HIDDEN;
 123
 124 struct GpPen{
 125     UINT style;
 126     GpUnit unit;
 127     REAL width;
 128     GpLineCap endcap;
 129     GpLineCap startcap;
 130     GpDashCap dashcap;
 131     GpCustomLineCap *customstart;
 132     GpCustomLineCap *customend;
 133     GpLineJoin join;
 134     REAL miterlimit;
 135     GpDashStyle dash;
 136     REAL *dashes;
 137     INT numdashes;
 138     REAL offset;    /* dash offset */
 139     GpBrush *brush;
 140     GpPenAlignment align;
 141 };
 142
 143 struct GpGraphics{
 144     HDC hdc;
 145     HWND hwnd;
 146     BOOL owndc;
 147     GpImage *image;
 148     SmoothingMode smoothing;
 149     CompositingQuality compqual;
 150     InterpolationMode interpolation;
 151     PixelOffsetMode pixeloffset;
 152     CompositingMode compmode;
 153     TextRenderingHint texthint;
 154     GpUnit unit;    /* page unit */
 155     REAL scale;     /* page scale */
 156     GpMatrix * worldtrans; /* world transform */
 157     BOOL busy;      /* hdc handle obtained by GdipGetDC */
 158     GpRegion *clip;
 159     UINT textcontrast; /* not used yet. get/set only */
 160     struct list containers;
 161     GraphicsContainer contid; /* last-issued container ID */
 162     INT origin_x, origin_y;
 163     /* For giving the caller an HDC when we technically can't: */
 164     HBITMAP temp_hbitmap;
 165     int temp_hbitmap_width;
 166     int temp_hbitmap_height;
 167     BYTE *temp_bits;
 168     HDC temp_hdc;
 169 };
 170
 171 struct GpBrush{
 172     GpBrushType bt;
 173 };
 174
 175 struct GpHatch{
 176     GpBrush brush;
 177     HatchStyle hatchstyle;
 178     ARGB forecol;
 179     ARGB backcol;
 180 };
 181
 182 struct GpSolidFill{
 183     GpBrush brush;
 184     ARGB color;
 185 };
 186
 187 struct GpPathGradient{
 188     GpBrush brush;
 189     GpPath* path;
 190     ARGB centercolor;
 191     GpWrapMode wrap;
 192     BOOL gamma;
 193     GpPointF center;
 194     GpPointF focus;
 195     REAL* blendfac;  /* blend factors */
 196     REAL* blendpos;  /* blend positions */
 197     INT blendcount;
 198     ARGB *surroundcolors;
 199     INT surroundcolorcount;
 200     ARGB* pblendcolor; /* preset blend colors */
 201     REAL* pblendpos; /* preset blend positions */
 202     INT pblendcount;
 203     GpMatrix *transform;
 204 };
 205
 206 struct GpLineGradient{
 207     GpBrush brush;
 208     GpPointF startpoint;
 209     GpPointF endpoint;
 210     ARGB startcolor;
 211     ARGB endcolor;
 212     RectF rect;
 213     GpWrapMode wrap;
 214     BOOL gamma;
 215     REAL* blendfac;  /* blend factors */
 216     REAL* blendpos;  /* blend positions */
 217     INT blendcount;
 218     ARGB* pblendcolor; /* preset blend colors */
 219     REAL* pblendpos; /* preset blend positions */
 220     INT pblendcount;
 221 };
 222
 223 struct GpTexture{
 224     GpBrush brush;
 225     GpMatrix *transform;
 226     GpImage *image;
 227     GpImageAttributes *imageattributes;
 228     BYTE *bitmap_bits; /* image bits converted to ARGB and run through imageattributes */
 229 };
 230
 231 struct GpPath{
 232     GpFillMode fill;
 233     GpPathData pathdata;
 234     BOOL newfigure; /* whether the next drawing action starts a new figure */
 235     INT datalen; /* size of the arrays in pathdata */
 236 };
 237
 238 struct GpMatrix{
 239     REAL matrix[6];
 240 };
 241
 242 struct GpPathIterator{
 243     GpPathData pathdata;
 244     INT subpath_pos;    /* for NextSubpath methods */
 245     INT marker_pos;     /* for NextMarker methods */
 246     INT pathtype_pos;   /* for NextPathType methods */
 247 };
 248
 249 struct GpCustomLineCap{
 250     GpPathData pathdata;
 251     BOOL fill;      /* TRUE for fill, FALSE for stroke */
 252     GpLineCap cap;  /* as far as I can tell, this value is ignored */
 253     REAL inset;     /* how much to adjust the end of the line */
 254     GpLineJoin join;
 255     REAL scale;
 256 };
 257
 258 struct GpAdustableArrowCap{
 259     GpCustomLineCap cap;
 260 };
 261
 262 struct GpImage{
 263     IPicture *picture;
 264     IStream *stream; /* a copy of the source stream */
 265     ImageType type;
 266     GUID format;
 267     UINT flags;
 268     UINT frame_count, current_frame;
 269     UINT palette_flags;
 270     UINT palette_count;
 271     UINT palette_size;
 272     ARGB *palette_entries;
 273     REAL xres, yres;
 274 };
 275
 276 struct GpMetafile{
 277     GpImage image;
 278     GpRectF bounds;
 279     GpUnit unit;
 280     MetafileType metafile_type;
 281     HENHMETAFILE hemf;
 282
 283     /* recording */
 284     HDC record_dc;
 285     GpGraphics *record_graphics;
 286     BYTE *comment_data;
 287     DWORD comment_data_size;
 288     DWORD comment_data_length;
 289
 290     /* playback */
 291     GpGraphics *playback_graphics;
 292     HDC playback_dc;
 293     GpPointF playback_points[3];
 294     HANDLETABLE *handle_table;
 295     int handle_count;
 296 };
 297
 298 struct GpBitmap{
 299     GpImage image;
 300     INT width;
 301     INT height;
 302     PixelFormat format;
 303     ImageLockMode lockmode;
 304     INT numlocks;
 305     BYTE *bitmapbits;   /* pointer to the buffer we passed in BitmapLockBits */
 306     HBITMAP hbitmap;
 307     HDC hdc;
 308     BYTE *bits; /* actual image bits if this is a DIB */
 309     INT stride; /* stride of bits if this is a DIB */
 310     BYTE *own_bits; /* image bits that need to be freed with this object */
 311     INT lockx, locky; /* X and Y coordinates of the rect when a bitmap is locked for writing. */
 312 };
 313
 314 struct GpCachedBitmap{
 315     GpImage *image;
 316 };
 317
 318 struct color_key{
 319     BOOL enabled;
 320     ARGB low;
 321     ARGB high;
 322 };
 323
 324 struct color_matrix{
 325     BOOL enabled;
 326     ColorMatrixFlags flags;
 327     ColorMatrix colormatrix;
 328     ColorMatrix graymatrix;
 329 };
 330
 331 struct color_remap_table{
 332     BOOL enabled;
 333     INT mapsize;
 334     ColorMap *colormap;
 335 };
 336
 337 struct GpImageAttributes{
 338     WrapMode wrap;
 339     ARGB outside_color;
 340     BOOL clamp;
 341     struct color_key colorkeys[ColorAdjustTypeCount];
 342     struct color_matrix colormatrices[ColorAdjustTypeCount];
 343     struct color_remap_table colorremaptables[ColorAdjustTypeCount];
 344     BOOL gamma_enabled[ColorAdjustTypeCount];
 345     REAL gamma[ColorAdjustTypeCount];
 346 };
 347
 348 struct GpFont{
 349     GpFontFamily *family;
 350     OUTLINETEXTMETRICW otm;
 351     REAL emSize; /* in font units */
 352     Unit unit;
 353 };
 354
 355 struct GpStringFormat{
 356     INT attr;
 357     LANGID lang;
 358     LANGID digitlang;
 359     StringAlignment align;
 360     StringTrimming trimming;
 361     HotkeyPrefix hkprefix;
 362     StringAlignment vertalign;
 363     StringDigitSubstitute digitsub;
 364     INT tabcount;
 365     REAL firsttab;
 366     REAL *tabs;
 367     CharacterRange *character_ranges;
 368     INT range_count;
 369 };
 370
 371 struct GpFontCollection{
 372     GpFontFamily **FontFamilies;
 373     INT count;
 374     INT allocated;
 375 };
 376
 377 struct GpFontFamily{
 378     WCHAR FamilyName[LF_FACESIZE];
 379     UINT16 em_height, ascent, descent, line_spacing; /* in font units */
 380     int dpi;
 381 };
 382
 383 /* internal use */
 384 typedef enum RegionType
 385 {
 386     RegionDataRect          = 0x10000000,
 387     RegionDataPath          = 0x10000001,
 388     RegionDataEmptyRect     = 0x10000002,
 389     RegionDataInfiniteRect  = 0x10000003,
 390 } RegionType;
 391
 392 struct region_element
 393 {
 394     DWORD type; /* Rectangle, Path, SpecialRectangle, or CombineMode */
 395     union
 396     {
 397         GpRectF rect;
 398         struct
 399         {
 400             GpPath* path;
 401             struct
 402             {
 403                 DWORD size;
 404                 DWORD magic;
 405                 DWORD count;
 406                 DWORD flags;
 407             } pathheader;
 408         } pathdata;
 409         struct
 410         {
 411             struct region_element *left;  /* the original region */
 412             struct region_element *right; /* what *left was combined with */
 413         } combine;
 414     } elementdata;
 415 };
 416
 417 struct GpRegion{
 418     struct
 419     {
 420         DWORD size;
 421         DWORD checksum;
 422         DWORD magic;
 423         DWORD num_children;
 424     } header;
 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,
 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