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