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