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