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