bugfixes, bugfixes, bugfixes...

[wxWidgets.git] / include / wx / os2 / dc.h

diff --git a/include/wx/os2/dc.h b/include/wx/os2/dc.h
index ce3e9998d1d98aafbd63526c3501b9b95228ef6a..89377fd23c7c44c3257e10ecd85a8cc7f22e37b0 100644 (file)
--- a/include/wx/os2/dc.h
+++ b/include/wx/os2/dc.h
@@ -1,374 +1,389 @@
 /////////////////////////////////////////////////////////////////////////////
 // Name:        dc.h
 // Purpose:     wxDC class
 /////////////////////////////////////////////////////////////////////////////
 // Name:        dc.h
 // Purpose:     wxDC class

-// Author:      AUTHOR
+// Author:      David Webster

 // Modified by:
 // Modified by:

-// Created:     ??/??/98
+// Created:     08/26/99

 // RCS-ID:      $Id$
 // RCS-ID:      $Id$

-// Copyright:   (c) AUTHOR
-// Licence:    wxWindows licence
+// Copyright:   (c) David Webster
+// Licence:     wxWindows licence

 /////////////////////////////////////////////////////////////////////////////
 
 #ifndef _WX_DC_H_
 #define _WX_DC_H_
 
 /////////////////////////////////////////////////////////////////////////////
 
 #ifndef _WX_DC_H_
 #define _WX_DC_H_
 

-#ifdef __GNUG__
-#pragma interface "dc.h"
-#endif
+#include "wx/defs.h"
+//#include "wx/dc.h"

 
 

-#include "wx/pen.h"
-#include "wx/brush.h"
-#include "wx/icon.h"
-#include "wx/font.h"
-#include "wx/gdicmn.h"
-
-//-----------------------------------------------------------------------------
-// constants
-//-----------------------------------------------------------------------------
-
-#ifndef MM_TEXT
-#define MM_TEXT                        0
-#define MM_ISOTROPIC   1
-#define MM_ANISOTROPIC 2
-#define MM_LOMETRIC            3
-#define MM_HIMETRIC            4
-#define MM_TWIPS               5
-#define MM_POINTS              6
-#define MM_METRIC              7
-#endif
+// ---------------------------------------------------------------------------
+// macros
+// ---------------------------------------------------------------------------

 
 

-//-----------------------------------------------------------------------------
-// global variables
-//-----------------------------------------------------------------------------
+// Logical to device
+// Absolute
+#define XLOG2DEV(x) (x)
+#define YLOG2DEV(y) (y)

 
 

-extern int wxPageNumber;
+// Relative
+#define XLOG2DEVREL(x) (x)
+#define YLOG2DEVREL(y) (y)

 
 

-//-----------------------------------------------------------------------------
-// wxDC
-//-----------------------------------------------------------------------------
+// Device to logical
+// Absolute
+#define XDEV2LOG(x) (x)

 
 

-class WXDLLEXPORT wxDC: public wxObject
-{
-  DECLARE_ABSTRACT_CLASS(wxDC)
+#define YDEV2LOG(y) (y)

 
 

-  public:
+// Relative
+#define XDEV2LOGREL(x) (x)
+#define YDEV2LOGREL(y) (y)

 
 

-    wxDC(void);
-    ~wxDC(void);
-    
-    void BeginDrawing(void) {};
-    void EndDrawing(void) {};
-    
-    virtual bool Ok(void) const { return m_ok; };
-
-    virtual void FloodFill( long x1, long y1, const wxColour& col, int style=wxFLOOD_SURFACE ) = 0;
-    inline void FloodFill(const wxPoint& pt, const wxColour& col, int style=wxFLOOD_SURFACE)
-    {
-        FloodFill(pt.x, pt.y, col, style);
-    }
+/*
+ * Have the same macros as for XView but not for every operation:
+ * just for calculating window/viewport extent (a better way of scaling).
+ */

 
 

-    virtual bool GetPixel( long x1, long y1, wxColour *col ) const = 0;
-    inline bool GetPixel(const wxPoint& pt, wxColour *col) const
-    {
-        return GetPixel(pt.x, pt.y, col);
-    }
+// Logical to device
+// Absolute
+#define MS_XLOG2DEV(x) LogicalToDevice(x)

 
 

-    virtual void DrawLine( long x1, long y1, long x2, long y2 ) = 0;
-    inline void DrawLine(const wxPoint& pt1, const wxPoint& pt2)
-    {
-        DrawLine(pt1.x, pt1.y, pt2.x, pt2.y);
-    }
+#define MS_YLOG2DEV(y) LogicalToDevice(y)

 
 

-    virtual void CrossHair( long x, long y ) = 0;
-    inline void CrossHair(const wxPoint& pt)
-    {
-        CrossHair(pt.x, pt.y);
-    }
+// Relative
+#define MS_XLOG2DEVREL(x) LogicalToDeviceXRel(x)
+#define MS_YLOG2DEVREL(y) LogicalToDeviceYRel(y)

 
 

-    virtual void DrawArc( long x1, long y1, long x2, long y2, long xc, long yc ) = 0;
-    inline void DrawArc(const wxPoint& pt1, const wxPoint& pt2, const wxPoint& centre)
-    {
-        DrawArc(pt1.x, pt1.y, pt2.x, pt2.y, centre.x, centre.y);
-    }
+// Device to logical
+// Absolute
+#define MS_XDEV2LOG(x) DeviceToLogicalX(x)

 
 

-    virtual void DrawEllipticArc( long x, long y, long width, long height, double sa, double ea ) = 0;
-    virtual void DrawEllipticArc (const wxPoint& pt, const wxSize& sz, double sa, double ea)
-    {
-        DrawEllipticArc(pt.x, pt.y, sz.x, sz.y, sa, ea);
-    }
+#define MS_YDEV2LOG(y) DeviceToLogicalY(y)

 
 

-    virtual void DrawPoint( long x, long y ) = 0;
-    virtual void DrawPoint( wxPoint& point );
-    
-    virtual void DrawLines( int n, wxPoint points[], long xoffset = 0, long yoffset = 0 ) = 0;
-    virtual void DrawLines( wxList *points, long xoffset = 0, long yoffset = 0 );
-    virtual void DrawPolygon( int n, wxPoint points[], long xoffset = 0, long yoffset = 0, 
-                              int fillStyle=wxODDEVEN_RULE ) = 0;
-    virtual void DrawPolygon( wxList *lines, long xoffset = 0, long yoffset = 0, 
-                              int fillStyle=wxODDEVEN_RULE );
-    
-    virtual void DrawRectangle( long x, long y, long width, long height ) = 0;
-    inline void DrawRectangle(const wxPoint& pt, const wxSize& sz)
-    {
-        DrawRectangle(pt.x, pt.y, sz.x, sz.y);
-    }
-    inline void DrawRectangle(const wxRect& rect)
-    {
-        DrawRectangle(rect.x, rect.y, rect.width, rect.height);
-    }
-    virtual void DrawRoundedRectangle( long x, long y, long width, long height, double radius = 20.0 ) = 0;
-    inline void DrawRoundedRectangle(const wxPoint& pt, const wxSize& sz, double radius = 20.0)
-    {
-        DrawRoundedRectangle(pt.x, pt.y, sz.x, sz.y, radius);
-    }
-    inline void DrawRoundedRectangle(const wxRect& rect, double radius = 20.0)
-    {
-        DrawRoundedRectangle(rect.x, rect.y, rect.width, rect.height, radius);
-    }
+// Relative
+#define MS_XDEV2LOGREL(x) DeviceToLogicalXRel(x)
+#define MS_YDEV2LOGREL(y) DeviceToLogicalYRel(y)

 
 

-    virtual void DrawEllipse( long x, long y, long width, long height ) = 0;
-    inline void DrawEllipse(const wxPoint& pt, const wxSize& sz)
-    {
-        DrawEllipse(pt.x, pt.y, sz.x, sz.y);
-    }
-    inline void DrawEllipse(const wxRect& rect)
-    {
-        DrawEllipse(rect.x, rect.y, rect.width, rect.height);
-    }
+#define YSCALE(y) (yorigin - (y))

 
 

-    virtual void DrawSpline( long x1, long y1, long x2, long y2, long x3, long y3 );
-    virtual void DrawSpline( wxList *points ) = 0;
-    virtual void DrawSpline( int n, wxPoint points[] );
-    
-    virtual bool CanDrawBitmap(void) const = 0;
+#define     wx_round(a)    (int)((a)+.5)

 
 

-    virtual void DrawIcon( const wxIcon &icon, long x, long y, bool useMask=FALSE );
-    inline void DrawIcon(const wxIcon& icon, const wxPoint& pt)
-    {
-        DrawIcon(icon, pt.x, pt.y);
-    }
+#if wxUSE_DC_CACHEING
+/*
+ * Cached blitting, maintaining a cache
+ * of bitmaps required for transparent blitting
+ * instead of constant creation/deletion
+ */

 
 

-    // TODO DrawBitmap is not always the same as DrawIcon, especially if bitmaps and
-    // icons are implemented differently.
-    void DrawBitmap( const wxBitmap &bmp, long x, long y, bool useMask=FALSE )
-             { DrawIcon( *((wxIcon*)(&bmp)), x, y, useMask ); }
+class wxDCCacheEntry : public wxObject
+{
+public:
+    wxDCCacheEntry( WXHBITMAP hBitmap
+                   ,int       nWidth
+                   ,int       nHeight
+                   ,int       nDepth
+                  );
+    wxDCCacheEntry( HPS   hPS
+                   ,int   nDepth
+                  );
+    ~wxDCCacheEntry();
+
+    WXHBITMAP                       m_hBitmap;
+    HPS                             m_hPS;
+    int                             m_nWidth;
+    int                             m_nHeight;
+    int                             m_nDepth;
+}; // end of CLASS wxDCCacheEntry
+#endif

 
 

-    virtual bool Blit( long xdest, long ydest, long width, long height,
-       wxDC *source, long xsrc, long ysrc, int logical_func = wxCOPY, bool useMask=FALSE ) = 0;
-    inline bool Blit(const wxPoint& destPt, const wxSize& sz,
-            wxDC *source, const wxPoint& srcPt, int rop = wxCOPY, bool useMask = FALSE)
+class WXDLLEXPORT wxDC : public wxDCBase
+{
+    DECLARE_DYNAMIC_CLASS(wxDC)
+
+public:
+    wxDC(void);
+    ~wxDC();
+
+    // implement base class pure virtuals
+    // ----------------------------------
+
+    virtual void Clear(void);
+
+    virtual bool    StartDoc(const wxString& rsMessage);
+    virtual void    EndDoc(void);
+
+    virtual void    StartPage(void);
+    virtual void    EndPage(void);
+
+    virtual void    SetFont(const wxFont& rFont);
+    virtual void    SetPen(const wxPen& rPen);
+    virtual void    SetBrush(const wxBrush& rBrush);
+    virtual void    SetBackground(const wxBrush& rBrush);
+    virtual void    SetBackgroundMode(int nMode);
+    virtual void    SetPalette(const wxPalette& rPalette);
+
+    virtual void    DestroyClippingRegion(void);
+
+    virtual wxCoord GetCharHeight(void) const;
+    virtual wxCoord GetCharWidth(void) const;
+    virtual void    DoGetTextExtent( const wxString& rsString
+                                    ,wxCoord*        pX
+                                    ,wxCoord*        pY
+                                    ,wxCoord*        pDescent = NULL
+                                    ,wxCoord*        pExternalLeading = NULL
+                                    ,wxFont*         pTheFont = NULL
+                                   ) const;
+    virtual bool    CanDrawBitmap(void) const;
+    virtual bool    CanGetTextExtent(void) const;
+    virtual int     GetDepth(void) const;
+    virtual wxSize  GetPPI(void) const;
+
+    virtual void    SetMapMode(int nMode);
+    virtual void    SetUserScale( double dX
+                                 ,double dY
+                                );
+    virtual void    SetSystemScale( double dX
+                                   ,double dY
+                                  );
+    virtual void    SetLogicalScale( double dX
+                                    ,double dY
+                                   );
+    virtual void    SetLogicalOrigin( wxCoord vX
+                                     ,wxCoord vY
+                                    );
+    virtual void    SetDeviceOrigin( wxCoord vX
+                                    ,wxCoord vY
+                                   );
+    virtual void    SetAxisOrientation( bool bXLeftRight
+                                       ,bool bYBottomUp
+                                      );
+    virtual void    SetLogicalFunction(int nFunction);
+
+    // implementation from now on
+    // --------------------------
+
+    virtual void    SetRop(WXHDC hCdc);
+    virtual void    SelectOldObjects(WXHDC hDc);
+
+    wxWindow*       GetWindow(void) const { return m_pCanvas; }
+    void            SetWindow(wxWindow* pWin) { m_pCanvas = pWin; }
+
+    WXHDC           GetHDC(void) const { return m_hDC; }
+    void            SetHDC( WXHDC hDc
+                           ,bool  bOwnsDC = FALSE
+                          )

     {
     {

-        return Blit(destPt.x, destPt.y, sz.x, sz.y, source, srcPt.x, srcPt.y, rop, useMask);
+        m_hDC = hDc;
+        m_bOwnsDC = bOwnsDC;

     }
 
     }
 

-    virtual void DrawText( const wxString &text, long x, long y, bool use16 = FALSE ) = 0;
-    inline void DrawText(const wxString& text, const wxPoint& pt, bool use16bit = FALSE)
+    HPS             GetHPS(void) const { return m_hPS; }
+    void            SetHPS(HPS hPS)

     {
     {

-        DrawText(text, pt.x, pt.y, use16bit);
+        HDC                         hDC = ::GpiQueryDevice(hPS);
+        m_hPS = hPS;

     }
     }

+    const wxBitmap& GetSelectedBitmap(void) const { return m_vSelectedBitmap; }
+    wxBitmap&       GetSelectedBitmap(void) { return m_vSelectedBitmap; }
+
+    void            UpdateClipBox();
+
+#if wxUSE_DC_CACHEING
+    static wxDCCacheEntry* FindBitmapInCache( HPS hPS
+                                             ,int nWidth
+                                             ,int nHeight
+                                            );
+    static wxDCCacheEntry* FindDCInCache( wxDCCacheEntry* pNotThis
+                                         ,HPS             hPS
+                                        );
+
+    static void AddToBitmapCache(wxDCCacheEntry* pEntry);
+    static void AddToDCCache(wxDCCacheEntry* pEntry);
+    static void ClearCache(void);
+#endif

 
 

-    virtual bool CanGetTextExtent(void) const = 0;
-    virtual void GetTextExtent( const wxString &string, long *width, long *height,
-                     long *descent = NULL, long *externalLeading = NULL,
-                     wxFont *theFont = NULL, bool use16 = FALSE ) = 0;
-    virtual long GetCharWidth(void) = 0;
-    virtual long GetCharHeight(void) = 0;
-    
-    virtual void Clear(void) = 0;
-            
-    virtual void SetFont( const wxFont &font ) = 0;
-    virtual wxFont& GetFont(void) const { return (wxFont&) m_font; };
-    
-    virtual void SetPen( const wxPen &pen ) = 0;
-    virtual wxPen& GetPen(void) const { return (wxPen&) m_pen; };
-    
-    virtual void SetBrush( const wxBrush &brush ) = 0;
-    virtual wxBrush& GetBrush(void) const { return (wxBrush&) m_brush; };
-
-    virtual void SetBackground( const wxBrush &brush ) = 0;
-    virtual wxBrush& GetBackground(void) const { return (wxBrush&) m_backgroundBrush; };
-
-    virtual void SetLogicalFunction( int function ) = 0;
-    virtual int GetLogicalFunction(void) const { return m_logicalFunction; };
-    
-    virtual void SetTextForeground( const wxColour &col );
-    virtual void SetTextBackground( const wxColour &col );
-    virtual wxColour& GetTextBackground(void) const { return (wxColour&)m_textBackgroundColour; };
-    virtual wxColour& GetTextForeground(void) const { return (wxColour&)m_textForegroundColour; };
-    
-    virtual void SetBackgroundMode( int mode ) = 0;
-    virtual int GetBackgroundMode(void) const { return m_backgroundMode; };
-    
-    virtual void SetPalette( const wxPalette& palette ) = 0;
-    void SetColourMap( const wxPalette& palette ) { SetPalette(palette); };
-    
-    // the first two must be overridden and called
-    virtual void SetClippingRegion( long x, long y, long width, long height );
-    virtual void DestroyClippingRegion(void);
-    virtual void GetClippingBox( long *x, long *y, long *width, long *height ) const;
-    
-    virtual inline long MinX(void) const { return m_minX; }
-    virtual inline long MaxX(void) const { return m_maxX; }
-    virtual inline long MinY(void) const { return m_minY; }
-    virtual inline long MaxY(void) const { return m_maxY; }
-
-    virtual void GetSize( int* width, int* height ) const;
-    inline wxSize GetSize(void) const { int w, h; GetSize(&w, &h); return wxSize(w, h); }
-    virtual void GetSizeMM( long* width, long* height ) const;
-    
-    virtual bool StartDoc( const wxString& WXUNUSED(message) ) { return TRUE; };
-    virtual void EndDoc(void) {};
-    virtual void StartPage(void) {};
-    virtual void EndPage(void) {};
-    
-    virtual void SetMapMode( int mode );
-    virtual int GetMapMode(void) const { return m_mappingMode; };
-    
-    virtual void SetUserScale( double x, double y );
-    virtual void GetUserScale( double *x, double *y );
-    virtual void SetLogicalScale( double x, double y );
-    virtual void GetLogicalScale( double *x, double *y );
-    
-    virtual void SetLogicalOrigin( long x, long y );
-    virtual void GetLogicalOrigin( long *x, long *y );
-    virtual void SetDeviceOrigin( long x, long y );
-    virtual void GetDeviceOrigin( long *x, long *y );
-    virtual void SetInternalDeviceOrigin( long x, long y );
-    virtual void GetInternalDeviceOrigin( long *x, long *y );
-
-    virtual void SetAxisOrientation( bool xLeftRight, bool yBottomUp );
-    
-    virtual void SetOptimization( bool WXUNUSED(optimize) ) {};
-    virtual bool GetOptimization(void) { return m_optimize; };
-    
-    virtual long DeviceToLogicalX(long x) const;
-    virtual long DeviceToLogicalY(long y) const;
-    virtual long DeviceToLogicalXRel(long x) const;
-    virtual long DeviceToLogicalYRel(long y) const;
-    virtual long LogicalToDeviceX(long x) const;
-    virtual long LogicalToDeviceY(long y) const;
-    virtual long LogicalToDeviceXRel(long x) const;
-    virtual long LogicalToDeviceYRel(long y) const;
-
-  public:
-  
-    void CalcBoundingBox( long x, long y );
-    void ComputeScaleAndOrigin(void);
-    
-    long XDEV2LOG(long x) const
-       {
-         long new_x = x - m_deviceOriginX;
-         if (new_x > 0) 
-           return (long)((double)(new_x) / m_scaleX + 0.5) * m_signX + m_logicalOriginX;
-         else
-           return (long)((double)(new_x) / m_scaleX - 0.5) * m_signX + m_logicalOriginX;
-       }
-    long XDEV2LOGREL(long x) const
-       { 
-         if (x > 0) 
-           return (long)((double)(x) / m_scaleX + 0.5);
-         else
-           return (long)((double)(x) / m_scaleX - 0.5);
-       }
-    long YDEV2LOG(long y) const
-       {
-         long new_y = y - m_deviceOriginY;
-         if (new_y > 0)
-           return (long)((double)(new_y) / m_scaleY + 0.5) * m_signY + m_logicalOriginY;
-         else
-           return (long)((double)(new_y) / m_scaleY - 0.5) * m_signY + m_logicalOriginY;
-       }
-    long YDEV2LOGREL(long y) const
-       { 
-         if (y > 0)
-           return (long)((double)(y) / m_scaleY + 0.5);
-         else
-           return (long)((double)(y) / m_scaleY - 0.5);
-       }
-    long XLOG2DEV(long x) const
-       { 
-         long new_x = x - m_logicalOriginX;
-         if (new_x > 0)
-           return (long)((double)(new_x) * m_scaleX + 0.5) * m_signX + m_deviceOriginX;
-         else
-           return (long)((double)(new_x) * m_scaleX - 0.5) * m_signX + m_deviceOriginX;
-       }
-    long XLOG2DEVREL(long x) const
-       { 
-         if (x > 0)
-           return (long)((double)(x) * m_scaleX + 0.5);
-         else
-           return (long)((double)(x) * m_scaleX - 0.5);
-       }
-    long YLOG2DEV(long y) const
-       {
-         long new_y = y - m_logicalOriginY;
-         if (new_y > 0)
-           return (long)((double)(new_y) * m_scaleY + 0.5) * m_signY + m_deviceOriginY;
-         else
-           return (long)((double)(new_y) * m_scaleY - 0.5) * m_signY + m_deviceOriginY;
-       }
-    long YLOG2DEVREL(long y) const
-       { 
-         if (y > 0)
-           return (long)((double)(y) * m_scaleY + 0.5);
-         else
-           return (long)((double)(y) * m_scaleY - 0.5);
-       }
-  
-  public:
-    
-    bool         m_ok;
-    bool         m_colour;
-    
-    // not sure, what these mean
-    bool         m_clipping;      // Is clipping on right now ?
-    bool         m_isInteractive; // Is GetPixel possible ?
-    bool         m_autoSetting;   // wxMSW only ?
-    bool         m_dontDelete;    // wxMSW only ?
-    bool         m_optimize;      // wxMSW only ?
-    wxString     m_filename;      // Not sure where this belongs.
-    
-    wxPen        m_pen;
-    wxBrush      m_brush;
-    wxBrush      m_backgroundBrush;
-    wxColour     m_textForegroundColour;
-    wxColour     m_textBackgroundColour;
-    wxFont       m_font;
-    
-    int          m_logicalFunction;
-    int          m_backgroundMode;
-    int          m_textAlignment;    // gone in wxWin 2.0 ?
-    
-    int          m_mappingMode;
-    
-    // not sure what for, but what is a mm on a screen you don't know the size of?
-    double       m_mm_to_pix_x,m_mm_to_pix_y; 
-    
-    long         m_internalDeviceOriginX,m_internalDeviceOriginY;   // If un-scrolled is non-zero or
-                                                                   // d.o. changes with scrolling.
-                                                                   // Set using SetInternalDeviceOrigin().
-                                                                   
-    long         m_externalDeviceOriginX,m_externalDeviceOriginY;   // To be set by external classes
-                                                                    // such as wxScrolledWindow
-                                                                   // using SetDeviceOrigin()
-                                                                   
-    long         m_deviceOriginX,m_deviceOriginY;                   // Sum of the two above.
-    
-    long         m_logicalOriginX,m_logicalOriginY;                 // User defined.
-
-    double       m_scaleX,m_scaleY;
-    double       m_logicalScaleX,m_logicalScaleY;
-    double       m_userScaleX,m_userScaleY;
-    long         m_signX,m_signY;
-    
-    bool         m_needComputeScaleX,m_needComputeScaleY;         // not yet used
-    
-    float        m_scaleFactor;  // wxPSDC wants to have this. Will disappear.
-    
-    long         m_clipX1,m_clipY1,m_clipX2,m_clipY2;
-    long         m_minX,m_maxX,m_minY,m_maxY;
-};
+protected:
+    virtual void DoFloodFill( wxCoord         vX
+                             ,wxCoord         vY
+                             ,const wxColour& rCol
+                             ,int             nStyle = wxFLOOD_SURFACE
+                            );
+
+    virtual bool DoGetPixel( wxCoord   vX
+                            ,wxCoord   vY
+                            ,wxColour* pCol
+                           ) const;
+
+    virtual void DoDrawPoint( wxCoord vX
+                             ,wxCoord vY
+                            );
+    virtual void DoDrawLine( wxCoord vX1
+                            ,wxCoord vY1
+                            ,wxCoord vX2
+                            ,wxCoord vY2
+                           );
+
+    virtual void DoDrawArc( wxCoord vX1
+                           ,wxCoord vY1
+                           ,wxCoord vX2
+                           ,wxCoord vY2
+                           ,wxCoord vXc
+                           ,wxCoord vYc
+                          );
+    virtual void DoDrawCheckMark( wxCoord vX
+                                 ,wxCoord vY
+                                 ,wxCoord vWidth
+                                 ,wxCoord vHeight
+                                );
+    virtual void DoDrawEllipticArc( wxCoord vX
+                                   ,wxCoord vY
+                                   ,wxCoord vW
+                                   ,wxCoord vH
+                                   ,double  dSa
+                                   ,double  dEa
+                                  );
+
+    virtual void DoDrawRectangle( wxCoord vX
+                                 ,wxCoord vY
+                                 ,wxCoord vWidth
+                                 ,wxCoord vHeight
+                                );
+    virtual void DoDrawRoundedRectangle( wxCoord vX
+                                        ,wxCoord vY
+                                        ,wxCoord vWidth
+                                        ,wxCoord vHeight
+                                        ,double  dRadius
+                                       );
+    virtual void DoDrawEllipse( wxCoord vX
+                               ,wxCoord vY
+                               ,wxCoord vWidth
+                               ,wxCoord vHeight
+                              );
+
+    virtual void DoCrossHair( wxCoord vX
+                             ,wxCoord vY
+                            );
+
+    virtual void DoDrawIcon( const wxIcon& rIcon
+                            ,wxCoord       vX
+                            ,wxCoord       vY
+                           );
+    virtual void DoDrawBitmap( const wxBitmap& rBmp
+                              ,wxCoord         vX
+                              ,wxCoord         vY
+                              ,bool            bUseMask = FALSE
+                             );
+
+    virtual void DoDrawText( const wxString& rsText
+                            ,wxCoord         vX
+                            ,wxCoord         vY
+                           );
+    virtual void DoDrawRotatedText( const wxString& rsText
+                                   ,wxCoord         vX
+                                   ,wxCoord         vY
+                                   ,double          dAngle
+                                  );
+
+    virtual bool DoBlit( wxCoord vXdest
+                        ,wxCoord vYdest
+                        ,wxCoord vWidth
+                        ,wxCoord vHeight
+                        ,wxDC*   pSource
+                        ,wxCoord vXsrc
+                        ,wxCoord vYsrc
+                        ,int     nRop = wxCOPY
+                        ,bool    bUseMask = FALSE
+                        ,wxCoord vXsrcMask = -1
+                        ,wxCoord vYsrcMask = -1
+                       );
+
+    virtual void DoSetClippingRegionAsRegion(const wxRegion& rRegion);
+    virtual void DoSetClippingRegion( wxCoord vX
+                                     ,wxCoord vY
+                                     ,wxCoord vWidth
+                                     ,wxCoord vHeight
+                                    );
+    virtual void DoGetClippingRegion( wxCoord* pX
+                                     ,wxCoord* pY
+                                     ,wxCoord* pWidth
+                                     ,wxCoord* pHeight)
+    {
+        GetClippingBox( pX
+                       ,pY
+                       ,pWidth
+                       ,pHeight
+                      );
+    }

 
 

+    virtual void DoGetSize( int* pWidth
+                           ,int* pHeight
+                          ) const;
+    virtual void DoGetSizeMM( int* pWidth
+                             ,int* pHeight
+                            ) const;
+
+    virtual void DoDrawLines( int     n
+                             ,wxPoint vaPoints[]
+                             ,wxCoord vXoffset
+                             ,wxCoord yYoffset
+                            );
+    virtual void DoDrawPolygon( int     n
+                               ,wxPoint vaPoints[]
+                               ,wxCoord vXoffset
+                               ,wxCoord vYoffset
+                               ,int     nFillStyle = wxODDEVEN_RULE
+                              );
+
+
+    //
+    // common part of DoDrawText() and DoDrawRotatedText()
+    //
+    void DrawAnyText( const wxString& rsText
+                     ,wxCoord         vX
+                     ,wxCoord         vY
+                    );
+
+    // OS2-specific member variables ?? do we even need this under OS/2?
+    int                             m_nWindowExtX;
+    int                             m_nWindowExtY;
+
+    //
+    // the window associated with this DC (may be NULL)
+    //
+    wxWindow*                       m_pCanvas;
+    wxBitmap                        m_vSelectedBitmap;
+
+public:
+    // PM specific stuff
+    HPS                             m_hPS;
+    HPS                             m_hOldPS;   // old hPS, if any
+    bool                            m_bIsPaintTime;// True at Paint Time
+
+    RECTL                           m_vRclPaint; // Bounding rectangle at Paint time etc.
+    //
+    // TRUE => DeleteDC() in dtor, FALSE => only ReleaseDC() it
+    //
+    bool                            m_bOwnsDC:1;
+
+    //
+    // our HDC
+    //
+    WXHDC                           m_hDC;
+
+    //
+    // Store all old GDI objects when do a SelectObject, so we can select them
+    // back in (this unselecting user's objects) so we can safely delete the
+    // DC.
+    //
+    WXHBITMAP                       m_hOldBitmap;
+    WXHPEN                          m_hOldPen;
+    WXHBRUSH                        m_hOldBrush;
+    WXHFONT                         m_hOldFont;
+    WXHPALETTE                      m_hOldPalette;
+
+#if wxUSE_DC_CACHEING
+    static wxList                   m_svBitmapCache;
+    static wxList                   m_svDCCache;
+#endif
+}; // end of CLASS wxDC

 #endif
     // _WX_DC_H_
 #endif
     // _WX_DC_H_