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