include/wx/dcgraph.h

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