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