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