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     SmoothingMode smoothing;
  95     CompositingQuality compqual;
  96     InterpolationMode interpolation;
  97     PixelOffsetMode pixeloffset;
  98     CompositingMode compmode;
  99     TextRenderingHint texthint;
 100     GpUnit unit;    /* page unit */
 101     REAL scale;     /* page scale */
 102     GpMatrix * worldtrans; /* world transform */
 103     BOOL busy;      /* hdc handle obtained by GdipGetDC */
 104     GpRegion *clip;
 105     UINT textcontrast; /* not used yet. get/set only */
 106 };
 107
 108 struct GpBrush{
 109     HBRUSH gdibrush;
 110     GpBrushType bt;
 111     LOGBRUSH lb;
 112 };
 113
 114 struct GpHatch{
 115     GpBrush brush;
 116     HatchStyle hatchstyle;
 117     ARGB forecol;
 118     ARGB backcol;
 119 };
 120
 121 struct GpSolidFill{
 122     GpBrush brush;
 123     ARGB color;
 124 };
 125
 126 struct GpPathGradient{
 127     GpBrush brush;
 128     PathData pathdata;
 129     ARGB centercolor;
 130     GpWrapMode wrap;
 131     BOOL gamma;
 132     GpPointF center;
 133     GpPointF focus;
 134     REAL* blendfac;  /* blend factors */
 135     REAL* blendpos;  /* blend positions */
 136     INT blendcount;
 137 };
 138
 139 struct GpLineGradient{
 140     GpBrush brush;
 141     GpPointF startpoint;
 142     GpPointF endpoint;
 143     ARGB startcolor;
 144     ARGB endcolor;
 145     GpWrapMode wrap;
 146     BOOL gamma;
 147 };
 148
 149 struct GpTexture{
 150     GpBrush brush;
 151     GpMatrix *transform;
 152     WrapMode wrap;  /* not used yet */
 153 };
 154
 155 struct GpPath{
 156     GpFillMode fill;
 157     GpPathData pathdata;
 158     BOOL newfigure; /* whether the next drawing action starts a new figure */
 159     INT datalen; /* size of the arrays in pathdata */
 160 };
 161
 162 struct GpMatrix{
 163     REAL matrix[6];
 164 };
 165
 166 struct GpPathIterator{
 167     GpPathData pathdata;
 168     INT subpath_pos;    /* for NextSubpath methods */
 169     INT marker_pos;     /* for NextMarker methods */
 170     INT pathtype_pos;   /* for NextPathType methods */
 171 };
 172
 173 struct GpCustomLineCap{
 174     GpPathData pathdata;
 175     BOOL fill;      /* TRUE for fill, FALSE for stroke */
 176     GpLineCap cap;  /* as far as I can tell, this value is ignored */
 177     REAL inset;     /* how much to adjust the end of the line */
 178     GpLineJoin join;
 179     REAL scale;
 180 };
 181
 182 struct GpAdustableArrowCap{
 183     GpCustomLineCap cap;
 184 };
 185
 186 struct GpImage{
 187     IPicture* picture;
 188     ImageType type;
 189     UINT flags;
 190 };
 191
 192 struct GpMetafile{
 193     GpImage image;
 194     GpRectF bounds;
 195     GpUnit unit;
 196 };
 197
 198 struct GpBitmap{
 199     GpImage image;
 200     INT width;
 201     INT height;
 202     PixelFormat format;
 203     ImageLockMode lockmode;
 204     INT numlocks;
 205     BYTE *bitmapbits;   /* pointer to the buffer we passed in BitmapLockBits */
 206 };
 207
 208 struct GpCachedBitmap{
 209     GpImage *image;
 210 };
 211
 212 struct GpImageAttributes{
 213     WrapMode wrap;
 214 };
 215
 216 struct GpFont{
 217     LOGFONTW lfw;
 218     REAL emSize;
 219     UINT height;
 220     LONG line_spacing;
 221     Unit unit;
 222 };
 223
 224 struct GpStringFormat{
 225     INT attr;
 226     LANGID lang;
 227     LANGID digitlang;
 228     StringAlignment align;
 229     StringTrimming trimming;
 230     HotkeyPrefix hkprefix;
 231     StringAlignment vertalign;
 232     StringDigitSubstitute digitsub;
 233     INT tabcount;
 234     REAL firsttab;
 235     REAL *tabs;
 236 };
 237
 238 struct GpFontCollection{
 239     GpFontFamily **FontFamilies;
 240     INT count;
 241 };
 242
 243 struct GpFontFamily{
 244     NEWTEXTMETRICW tmw;
 245     WCHAR FamilyName[LF_FACESIZE];
 246 };
 247
 248 /* internal use */
 249 typedef enum RegionType
 250 {
 251     RegionDataRect          = 0x10000000,
 252     RegionDataPath          = 0x10000001,
 253     RegionDataEmptyRect     = 0x10000002,
 254     RegionDataInfiniteRect  = 0x10000003,
 255 } RegionType;
 256
 257 struct region_element
 258 {
 259     DWORD type; /* Rectangle, Path, SpecialRectangle, or CombineMode */
 260     union
 261     {
 262         GpRectF rect;
 263         struct
 264         {
 265             GpPath* path;
 266             struct
 267             {
 268                 DWORD size;
 269                 DWORD magic;
 270                 DWORD count;
 271                 DWORD flags;
 272             } pathheader;
 273         } pathdata;
 274         struct
 275         {
 276             struct region_element *left;  /* the original region */
 277             struct region_element *right; /* what *left was combined with */
 278         } combine;
 279     } elementdata;
 280 };
 281
 282 struct GpRegion{
 283     struct
 284     {
 285         DWORD size;
 286         DWORD checksum;
 287         DWORD magic;
 288         DWORD num_children;
 289     } header;
 290     region_element node;
 291 };
 292
 293 #endif