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