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