reactos/dll/win32/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
  33 #include "gdiplus.h"
  34
  35 #define GP_DEFAULT_PENSTYLE (PS_GEOMETRIC | PS_SOLID | PS_ENDCAP_FLAT | PS_JOIN_MITER)
  36 #define MAX_ARC_PTS (13)
  37 #define MAX_DASHLEN (16) /* this is a limitation of gdi */
  38 #define INCH_HIMETRIC (2540)
  39
  40 #define VERSION_MAGIC 0xdbc01001
  41 #define TENSION_CONST (0.3)
  42
  43 COLORREF ARGB2COLORREF(ARGB color);
  44 extern INT arc2polybezier(GpPointF * points, REAL x1, REAL y1, REAL x2, REAL y2,
  45     REAL startAngle, REAL sweepAngle);
  46 extern REAL gdiplus_atan2(REAL dy, REAL dx);
  47 extern GpStatus hresult_to_status(HRESULT res);
  48 extern REAL convert_unit(HDC hdc, GpUnit unit);
  49
  50 extern void calc_curve_bezier(CONST GpPointF *pts, REAL tension, REAL *x1,
  51     REAL *y1, REAL *x2, REAL *y2);
  52 extern void calc_curve_bezier_endp(REAL xend, REAL yend, REAL xadj, REAL yadj,
  53     REAL tension, REAL *x, REAL *y);
  54
  55 extern BOOL lengthen_path(GpPath *path, INT len);
  56
  57 extern GpStatus trace_path(GpGraphics *graphics, GpPath *path);
  58
  59 typedef struct region_element region_element;
  60 extern inline void delete_element(region_element *element);
  61
  62 static inline INT roundr(REAL x)
  63 {
  64     return (INT) floorf(x + 0.5);
  65 }
  66
  67 static inline REAL deg2rad(REAL degrees)
  68 {
  69     return M_PI * degrees / 180.0;
  70 }
  71
  72 struct GpPen{
  73     UINT style;
  74     GpUnit unit;
  75     REAL width;
  76     GpLineCap endcap;
  77     GpLineCap startcap;
  78     GpDashCap dashcap;
  79     GpCustomLineCap *customstart;
  80     GpCustomLineCap *customend;
  81     GpLineJoin join;
  82     REAL miterlimit;
  83     GpDashStyle dash;
  84     REAL *dashes;
  85     INT numdashes;
  86     REAL offset;    /* dash offset */
  87     GpBrush *brush;
  88     GpPenAlignment align;
  89 };
  90
  91 struct GpGraphics{
  92     HDC hdc;
  93     HWND hwnd;
  94     BOOL owndc;
  95     SmoothingMode smoothing;
  96     CompositingQuality compqual;
  97     InterpolationMode interpolation;
  98     PixelOffsetMode pixeloffset;
  99     CompositingMode compmode;
 100     TextRenderingHint texthint;
 101     GpUnit unit;    /* page unit */
 102     REAL scale;     /* page scale */
 103     GpMatrix * worldtrans; /* world transform */
 104     BOOL busy;      /* hdc handle obtained by GdipGetDC */
 105     GpRegion *clip;
 106     UINT textcontrast; /* not used yet. get/set only */
 107 };
 108
 109 struct GpBrush{
 110     HBRUSH gdibrush;
 111     GpBrushType bt;
 112     LOGBRUSH lb;
 113 };
 114
 115 struct GpHatch{
 116     GpBrush brush;
 117     HatchStyle hatchstyle;
 118     ARGB forecol;
 119     ARGB backcol;
 120 };
 121
 122 struct GpSolidFill{
 123     GpBrush brush;
 124     ARGB color;
 125 };
 126
 127 struct GpPathGradient{
 128     GpBrush brush;
 129     PathData pathdata;
 130     ARGB centercolor;
 131     GpWrapMode wrap;
 132     BOOL gamma;
 133     GpPointF center;
 134     GpPointF focus;
 135     REAL* blendfac;  /* blend factors */
 136     REAL* blendpos;  /* blend positions */
 137     INT blendcount;
 138 };
 139
 140 struct GpLineGradient{
 141     GpBrush brush;
 142     GpPointF startpoint;
 143     GpPointF endpoint;
 144     ARGB startcolor;
 145     ARGB endcolor;
 146     RectF rect;
 147     GpWrapMode wrap;
 148     BOOL gamma;
 149     REAL* blendfac;  /* blend factors */
 150     REAL* blendpos;  /* blend positions */
 151     INT blendcount;
 152 };
 153
 154 struct GpTexture{
 155     GpBrush brush;
 156     GpMatrix *transform;
 157     WrapMode wrap;  /* not used yet */
 158 };
 159
 160 struct GpPath{
 161     GpFillMode fill;
 162     GpPathData pathdata;
 163     BOOL newfigure; /* whether the next drawing action starts a new figure */
 164     INT datalen; /* size of the arrays in pathdata */
 165 };
 166
 167 struct GpMatrix{
 168     REAL matrix[6];
 169 };
 170
 171 struct GpPathIterator{
 172     GpPathData pathdata;
 173     INT subpath_pos;    /* for NextSubpath methods */
 174     INT marker_pos;     /* for NextMarker methods */
 175     INT pathtype_pos;   /* for NextPathType methods */
 176 };
 177
 178 struct GpCustomLineCap{
 179     GpPathData pathdata;
 180     BOOL fill;      /* TRUE for fill, FALSE for stroke */
 181     GpLineCap cap;  /* as far as I can tell, this value is ignored */
 182     REAL inset;     /* how much to adjust the end of the line */
 183     GpLineJoin join;
 184     REAL scale;
 185 };
 186
 187 struct GpAdustableArrowCap{
 188     GpCustomLineCap cap;
 189 };
 190
 191 struct GpImage{
 192     IPicture* picture;
 193     ImageType type;
 194     UINT flags;
 195 };
 196
 197 struct GpMetafile{
 198     GpImage image;
 199     GpRectF bounds;
 200     GpUnit unit;
 201 };
 202
 203 struct GpBitmap{
 204     GpImage image;
 205     INT width;
 206     INT height;
 207     PixelFormat format;
 208     ImageLockMode lockmode;
 209     INT numlocks;
 210     BYTE *bitmapbits;   /* pointer to the buffer we passed in BitmapLockBits */
 211 };
 212
 213 struct GpCachedBitmap{
 214     GpImage *image;
 215 };
 216
 217 struct GpImageAttributes{
 218     WrapMode wrap;
 219 };
 220
 221 struct GpFont{
 222     LOGFONTW lfw;
 223     REAL emSize;
 224     UINT height;
 225     LONG line_spacing;
 226     Unit unit;
 227 };
 228
 229 struct GpStringFormat{
 230     INT attr;
 231     LANGID lang;
 232     LANGID digitlang;
 233     StringAlignment align;
 234     StringTrimming trimming;
 235     HotkeyPrefix hkprefix;
 236     StringAlignment vertalign;
 237     StringDigitSubstitute digitsub;
 238     INT tabcount;
 239     REAL firsttab;
 240     REAL *tabs;
 241 };
 242
 243 struct GpFontCollection{
 244     GpFontFamily **FontFamilies;
 245     INT count;
 246 };
 247
 248 struct GpFontFamily{
 249     NEWTEXTMETRICW tmw;
 250     WCHAR FamilyName[LF_FACESIZE];
 251 };
 252
 253 /* internal use */
 254 typedef enum RegionType
 255 {
 256     RegionDataRect          = 0x10000000,
 257     RegionDataPath          = 0x10000001,
 258     RegionDataEmptyRect     = 0x10000002,
 259     RegionDataInfiniteRect  = 0x10000003,
 260 } RegionType;
 261
 262 struct region_element
 263 {
 264     DWORD type; /* Rectangle, Path, SpecialRectangle, or CombineMode */
 265     union
 266     {
 267         GpRectF rect;
 268         struct
 269         {
 270             GpPath* path;
 271             struct
 272             {
 273                 DWORD size;
 274                 DWORD magic;
 275                 DWORD count;
 276                 DWORD flags;
 277             } pathheader;
 278         } pathdata;
 279         struct
 280         {
 281             struct region_element *left;  /* the original region */
 282             struct region_element *right; /* what *left was combined with */
 283         } combine;
 284     } elementdata;
 285 };
 286
 287 struct GpRegion{
 288     struct
 289     {
 290         DWORD size;
 291         DWORD checksum;
 292         DWORD magic;
 293         DWORD num_children;
 294     } header;
 295     region_element node;
 296 };
 297
 298 #endif