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