include/wx/dcgraph.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        wx/dcgraph.h
   3 // Purpose:     graphics context device bridge header
   4 // Author:      Stefan Csomor
   5 // Modified by:
   6 // Created:
   7 // Copyright:   (c) Stefan Csomor
   8 // RCS-ID:      $Id$
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifndef _WX_GRAPHICS_DC_H_
  13 #define _WX_GRAPHICS_DC_H_
  14
  15 #if wxUSE_GRAPHICS_CONTEXT
  16
  17 #include "wx/dc.h"
  18 #include "wx/geometry.h"
  19 #include "wx/graphics.h"
  20
  21 class WXDLLIMPEXP_FWD_CORE wxWindowDC;
  22
  23
  24 class WXDLLIMPEXP_CORE wxGCDC: public wxDC
  25 {
  26 public:
  27     wxGCDC( const wxWindowDC& dc );
  28     wxGCDC( const wxMemoryDC& dc );
  29 #if wxUSE_PRINTING_ARCHITECTURE
  30     wxGCDC( const wxPrinterDC& dc );
  31 #endif
  32     wxGCDC();
  33     virtual ~wxGCDC();
  34
  35     wxGraphicsContext* GetGraphicsContext();
  36     void SetGraphicsContext( wxGraphicsContext* ctx );
  37
  38 #ifdef __WXMSW__
  39     // override wxDC virtual functions to provide access to HDC associated with
  40     // this Graphics object (implemented in src/msw/graphics.cpp)
  41     virtual WXHDC AcquireHDC();
  42     virtual void ReleaseHDC(WXHDC hdc);
  43 #endif // __WXMSW__
  44
  45 private:
  46     DECLARE_DYNAMIC_CLASS(wxGCDC)
  47     wxDECLARE_NO_COPY_CLASS(wxGCDC);
  48 };
  49
  50
  51 class WXDLLIMPEXP_CORE wxGCDCImpl: public wxDCImpl
  52 {
  53 public:
  54     wxGCDCImpl( wxDC *owner, const wxWindowDC& dc );
  55     wxGCDCImpl( wxDC *owner, const wxMemoryDC& dc );
  56 #if wxUSE_PRINTING_ARCHITECTURE
  57     wxGCDCImpl( wxDC *owner, const wxPrinterDC& dc );
  58 #endif
  59     wxGCDCImpl( wxDC *owner );
  60
  61     virtual ~wxGCDCImpl();
  62
  63     void Init();
  64
  65
  66     // implement base class pure virtuals
  67     // ----------------------------------
  68
  69     virtual void Clear();
  70
  71     virtual bool StartDoc( const wxString& message );
  72     virtual void EndDoc();
  73
  74     virtual void StartPage();
  75     virtual void EndPage();
  76
  77     // flushing the content of this dc immediately onto screen
  78     virtual void Flush();
  79
  80     virtual void SetFont(const wxFont& font);
  81     virtual void SetPen(const wxPen& pen);
  82     virtual void SetBrush(const wxBrush& brush);
  83     virtual void SetBackground(const wxBrush& brush);
  84     virtual void SetBackgroundMode(int mode);
  85     virtual void SetPalette(const wxPalette& palette);
  86
  87     virtual void DestroyClippingRegion();
  88
  89     virtual wxCoord GetCharHeight() const;
  90     virtual wxCoord GetCharWidth() const;
  91
  92     virtual bool CanDrawBitmap() const;
  93     virtual bool CanGetTextExtent() const;
  94     virtual int GetDepth() const;
  95     virtual wxSize GetPPI() const;
  96
  97     virtual void SetMapMode(wxMappingMode mode);
  98
  99     virtual void SetLogicalFunction(wxRasterOperationMode function);
 100
 101     virtual void SetTextForeground(const wxColour& colour);
 102     virtual void SetTextBackground(const wxColour& colour);
 103
 104     virtual void ComputeScaleAndOrigin();
 105
 106     wxGraphicsContext* GetGraphicsContext() { return m_graphicContext; }
 107     virtual void SetGraphicsContext( wxGraphicsContext* ctx );
 108
 109     // the true implementations
 110     virtual bool DoFloodFill(wxCoord x, wxCoord y, const wxColour& col,
 111                              wxFloodFillStyle style = wxFLOOD_SURFACE);
 112
 113     virtual void DoGradientFillLinear(const wxRect& rect,
 114         const wxColour& initialColour,
 115         const wxColour& destColour,
 116         wxDirection nDirection = wxEAST);
 117
 118     virtual void DoGradientFillConcentric(const wxRect& rect,
 119         const wxColour& initialColour,
 120         const wxColour& destColour,
 121         const wxPoint& circleCenter);
 122
 123     virtual bool DoGetPixel(wxCoord x, wxCoord y, wxColour *col) const;
 124
 125     virtual void DoDrawPoint(wxCoord x, wxCoord y);
 126
 127 #if wxUSE_SPLINES
 128     virtual void DoDrawSpline(const wxPointList *points);
 129 #endif
 130
 131     virtual void DoDrawLine(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2);
 132
 133     virtual void DoDrawArc(wxCoord x1, wxCoord y1,
 134         wxCoord x2, wxCoord y2,
 135         wxCoord xc, wxCoord yc);
 136
 137     virtual void DoDrawCheckMark(wxCoord x, wxCoord y,
 138         wxCoord width, wxCoord height);
 139
 140     virtual void DoDrawEllipticArc(wxCoord x, wxCoord y, wxCoord w, wxCoord h,
 141         double sa, double ea);
 142
 143     virtual void DoDrawRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height);
 144     virtual void DoDrawRoundedRectangle(wxCoord x, wxCoord y,
 145         wxCoord width, wxCoord height,
 146         double radius);
 147     virtual void DoDrawEllipse(wxCoord x, wxCoord y, wxCoord width, wxCoord height);
 148
 149     virtual void DoCrossHair(wxCoord x, wxCoord y);
 150
 151     virtual void DoDrawIcon(const wxIcon& icon, wxCoord x, wxCoord y);
 152     virtual void DoDrawBitmap(const wxBitmap &bmp, wxCoord x, wxCoord y,
 153         bool useMask = false);
 154
 155     virtual void DoDrawText(const wxString& text, wxCoord x, wxCoord y);
 156     virtual void DoDrawRotatedText(const wxString& text, wxCoord x, wxCoord y,
 157         double angle);
 158
 159     virtual bool DoBlit(wxCoord xdest, wxCoord ydest, wxCoord width, wxCoord height,
 160                         wxDC *source, wxCoord xsrc, wxCoord ysrc,
 161                         wxRasterOperationMode rop = wxCOPY, bool useMask = false,
 162                         wxCoord xsrcMask = -1, wxCoord ysrcMask = -1);
 163
 164     virtual bool DoStretchBlit(wxCoord xdest, wxCoord ydest,
 165                                wxCoord dstWidth, wxCoord dstHeight,
 166                                wxDC *source,
 167                                wxCoord xsrc, wxCoord ysrc,
 168                                wxCoord srcWidth, wxCoord srcHeight,
 169                                wxRasterOperationMode = wxCOPY, bool useMask = false,
 170                                wxCoord xsrcMask = wxDefaultCoord, wxCoord ysrcMask = wxDefaultCoord);
 171
 172     virtual void DoGetSize(int *,int *) const;
 173     virtual void DoGetSizeMM(int* width, int* height) const;
 174
 175     virtual void DoDrawLines(int n, wxPoint points[],
 176         wxCoord xoffset, wxCoord yoffset);
 177     virtual void DoDrawPolygon(int n, wxPoint points[],
 178                                wxCoord xoffset, wxCoord yoffset,
 179                                wxPolygonFillMode fillStyle = wxODDEVEN_RULE);
 180     virtual void DoDrawPolyPolygon(int n, int count[], wxPoint points[],
 181                                    wxCoord xoffset, wxCoord yoffset,
 182                                    wxPolygonFillMode fillStyle);
 183
 184     virtual void DoSetDeviceClippingRegion(const wxRegion& region);
 185     virtual void DoSetClippingRegion(wxCoord x, wxCoord y,
 186         wxCoord width, wxCoord height);
 187
 188     virtual void DoGetTextExtent(const wxString& string,
 189         wxCoord *x, wxCoord *y,
 190         wxCoord *descent = NULL,
 191         wxCoord *externalLeading = NULL,
 192         const wxFont *theFont = NULL) const;
 193
 194     virtual bool DoGetPartialTextExtents(const wxString& text, wxArrayInt& widths) const;
 195
 196 protected:
 197     // scaling variables
 198     bool m_logicalFunctionSupported;
 199     double       m_mm_to_pix_x, m_mm_to_pix_y;
 200     wxGraphicsMatrix m_matrixOriginal;
 201     wxGraphicsMatrix m_matrixCurrent;
 202
 203     double m_formerScaleX, m_formerScaleY;
 204
 205     wxGraphicsContext* m_graphicContext;
 206
 207     DECLARE_CLASS(wxGCDCImpl)
 208     wxDECLARE_NO_COPY_CLASS(wxGCDCImpl);
 209 };
 210
 211 #endif // wxUSE_GRAPHICS_CONTEXT
 212 #endif // _WX_GRAPHICS_DC_H_