include/gdi.h

   1 /*
   2  * GDI definitions
   3  *
   4  * Copyright 1993 Alexandre Julliard
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  */
  20
  21 #ifndef __WINE_GDI_H
  22 #define __WINE_GDI_H
  23
  24 #include <stdarg.h>
  25 #include <windef.h>
  26 #include <winbase.h>
  27 #include <wingdi.h>
  28 #include <wine/wingdi16.h>
  29 #include <math.h>
  30
  31   /* GDI objects magic numbers */
  32 #define FIRST_MAGIC           0x4f47
  33 #define PEN_MAGIC             0x4f47
  34 #define BRUSH_MAGIC           0x4f48
  35 #define FONT_MAGIC            0x4f49
  36 #define PALETTE_MAGIC         0x4f4a
  37 #define BITMAP_MAGIC          0x4f4b
  38 #define REGION_MAGIC          0x4f4c
  39 #define DC_MAGIC              0x4f4d
  40 #define DISABLED_DC_MAGIC     0x4f4e
  41 #define META_DC_MAGIC         0x4f4f
  42 #define METAFILE_MAGIC        0x4f50
  43 #define METAFILE_DC_MAGIC     0x4f51
  44 #define ENHMETAFILE_MAGIC     0x4f52
  45 #define ENHMETAFILE_DC_MAGIC  0x4f53
  46 #define MEMORY_DC_MAGIC       0x4f54
  47 #define LAST_MAGIC            0x4f54
  48
  49 #define MAGIC_DONTCARE        0xffff
  50
  51 /* GDI constants for making objects private/system (naming undoc. !) */
  52 #define OBJECT_PRIVATE        0x2000
  53 #define OBJECT_NOSYSTEM       0x8000
  54
  55 #define GDIMAGIC(magic) ((magic) & ~(OBJECT_PRIVATE|OBJECT_NOSYSTEM))
  56
  57 struct gdi_obj_funcs;
  58 struct hdc_list;
  59
  60 typedef struct tagGDIOBJHDR
  61 {
  62     HANDLE16    hNext;
  63     WORD        wMagic;
  64     DWORD       dwCount;
  65     const struct gdi_obj_funcs *funcs;
  66     struct hdc_list *hdcs;
  67 } GDIOBJHDR;
  68
  69
  70 /* It should not be necessary to access the contents of the GdiPath
  71  * structure directly; if you find that the exported functions don't
  72  * allow you to do what you want, then please place a new exported
  73  * function that does this job in path.c.
  74  */
  75 typedef enum tagGdiPathState
  76 {
  77    PATH_Null,
  78    PATH_Open,
  79    PATH_Closed
  80 } GdiPathState;
  81
  82 typedef struct tagGdiPath
  83 {
  84    GdiPathState state;
  85    POINT      *pPoints;
  86    BYTE         *pFlags;
  87    int          numEntriesUsed, numEntriesAllocated;
  88    BOOL       newStroke;
  89 } GdiPath;
  90
  91 typedef struct tagGdiFont *GdiFont;
  92
  93 typedef struct { int opaque; } *PHYSDEV;  /* PHYSDEV is an opaque pointer */
  94
  95 typedef struct tagDC
  96 {
  97     GDIOBJHDR    header;
  98     HDC          hSelf;            /* Handle to this DC */
  99     const struct tagDC_FUNCS *funcs; /* DC function table */
 100     PHYSDEV      physDev;         /* Physical device (driver-specific) */
 101     INT          saveLevel;
 102     DWORD        dwHookData;
 103     FARPROC16    hookProc;         /* the original SEGPTR ... */
 104     DCHOOKPROC   hookThunk;        /* ... and the thunk to call it */
 105
 106     INT          wndOrgX;          /* Window origin */
 107     INT          wndOrgY;
 108     INT          wndExtX;          /* Window extent */
 109     INT          wndExtY;
 110     INT          vportOrgX;        /* Viewport origin */
 111     INT          vportOrgY;
 112     INT          vportExtX;        /* Viewport extent */
 113     INT          vportExtY;
 114
 115     int           flags;
 116     HRGN          hClipRgn;     /* Clip region (may be 0) */
 117     HRGN          hVisRgn;      /* Visible region (must never be 0) */
 118     HRGN          hGCClipRgn;   /* GC clip region (ClipRgn AND VisRgn) */
 119     HPEN          hPen;
 120     HBRUSH        hBrush;
 121     HFONT         hFont;
 122     HBITMAP       hBitmap;
 123     HANDLE        hDevice;
 124     HPALETTE      hPalette;
 125
 126     GdiFont       gdiFont;
 127     GdiPath       path;
 128
 129     WORD          ROPmode;
 130     WORD          polyFillMode;
 131     WORD          stretchBltMode;
 132     WORD          relAbsMode;
 133     WORD          backgroundMode;
 134     COLORREF      backgroundColor;
 135     COLORREF      textColor;
 136     COLORREF      dcBrushColor;
 137     COLORREF      dcPenColor;
 138     short         brushOrgX;
 139     short         brushOrgY;
 140
 141     WORD          textAlign;         /* Text alignment from SetTextAlign() */
 142     short         charExtra;         /* Spacing from SetTextCharacterExtra() */
 143     short         breakTotalExtra;   /* Total extra space for justification */
 144     short         breakCount;        /* Break char. count */
 145     short         breakExtra;        /* breakTotalExtra / breakCount */
 146     short         breakRem;          /* breakTotalExtra % breakCount */
 147
 148     RECT          totalExtent;
 149     BYTE          bitsPerPixel;
 150
 151     INT           MapMode;
 152     INT           GraphicsMode;      /* Graphics mode */
 153     ABORTPROC     pAbortProc;        /* AbortProc for Printing */
 154     ABORTPROC16   pAbortProc16;
 155     INT           CursPosX;          /* Current position */
 156     INT           CursPosY;
 157     INT           ArcDirection;
 158     XFORM         xformWorld2Wnd;    /* World-to-window transformation */
 159     XFORM         xformWorld2Vport;  /* World-to-viewport transformation */
 160     XFORM         xformVport2World;  /* Inverse of the above transformation */
 161     BOOL          vport2WorldValid;  /* Is xformVport2World valid? */
 162 } DC;
 163
 164 typedef INT (*DEVICEFONTENUMPROC)(LPENUMLOGFONTEXW,NEWTEXTMETRICEXW *,DWORD,LPARAM);
 165
 166 /* extra stock object: default 1x1 bitmap for memory DCs */
 167 #define DEFAULT_BITMAP (STOCK_LAST+1)
 168
 169 /* Rounds a floating point number to integer. The world-to-viewport
 170  * transformation process is done in floating point internally. This function
 171  * is then used to round these coordinates to integer values.
 172  */
 173 static inline INT WINE_UNUSED GDI_ROUND(FLOAT val)
 174 {
 175    return (int)floor(val + 0.5);
 176 }
 177
 178   /* World -> Device size conversion */
 179
 180 /* Performs a world-to-viewport transformation on the specified width (which
 181  * is in integer format).
 182  */
 183 static inline INT WINE_UNUSED INTERNAL_XWSTODS(DC *dc, INT width)
 184 {
 185     FLOAT floatWidth;
 186
 187     /* Perform operation with floating point */
 188     floatWidth = (FLOAT)width * dc->xformWorld2Vport.eM11;
 189     /* Round to integers */
 190     return GDI_ROUND(floatWidth);
 191 }
 192
 193 /* Performs a world-to-viewport transformation on the specified size (which
 194  * is in integer format).
 195  */
 196 static inline INT WINE_UNUSED INTERNAL_YWSTODS(DC *dc, INT height)
 197 {
 198     FLOAT floatHeight;
 199
 200     /* Perform operation with floating point */
 201     floatHeight = (FLOAT)height * dc->xformWorld2Vport.eM22;
 202     /* Round to integers */
 203     return GDI_ROUND(floatHeight);
 204 }
 205
 206   /* GDI local heap */
 207
 208 extern void *GDI_GetObjPtr( HGDIOBJ, WORD );
 209 extern void GDI_ReleaseObj( HGDIOBJ );
 210
 211 #define WINE_GGO_GRAY16_BITMAP 0x7f
 212
 213 #endif  /* __WINE_GDI_H */