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
  20 class WXDLLEXPORT wxGraphicsContext;
  21 class WXDLLEXPORT wxWindowDC;
  22
  23
  24 #ifdef __WXMAC__
  25 #define wxGCDC wxDC
  26 #endif
  27
  28 class WXDLLEXPORT wxGCDC:
  29 #ifdef __WXMAC__
  30         public wxDCBase
  31 #else
  32         public wxDC
  33 #endif
  34 {
  35     DECLARE_DYNAMIC_CLASS(wxGCDC)
  36     DECLARE_NO_COPY_CLASS(wxGCDC)
  37
  38 public:
  39     wxGCDC(const wxWindowDC& dc);
  40     wxGCDC();
  41     virtual ~wxGCDC();
  42
  43     void Init();
  44
  45
  46     // implement base class pure virtuals
  47     // ----------------------------------
  48
  49     virtual void Clear();
  50
  51     virtual bool StartDoc( const wxString& WXUNUSED(message) ) { return true; }
  52     virtual void EndDoc(void) {}
  53
  54     virtual void StartPage(void) {}
  55     virtual void EndPage(void) {}
  56
  57     virtual void SetFont(const wxFont& font);
  58     virtual void SetPen(const wxPen& pen);
  59     virtual void SetBrush(const wxBrush& brush);
  60     virtual void SetBackground(const wxBrush& brush);
  61     virtual void SetBackgroundMode(int mode);
  62     virtual void SetPalette(const wxPalette& palette);
  63
  64     virtual void DestroyClippingRegion();
  65
  66     virtual wxCoord GetCharHeight() const;
  67     virtual wxCoord GetCharWidth() const;
  68
  69     virtual bool CanDrawBitmap() const;
  70     virtual bool CanGetTextExtent() const;
  71     virtual int GetDepth() const;
  72     virtual wxSize GetPPI() const;
  73
  74     virtual void SetMapMode(int mode);
  75     virtual void SetUserScale(double x, double y);
  76
  77     virtual void SetLogicalScale(double x, double y);
  78     virtual void SetLogicalOrigin(wxCoord x, wxCoord y);
  79     virtual void SetDeviceOrigin(wxCoord x, wxCoord y);
  80     virtual void SetAxisOrientation(bool xLeftRight, bool yBottomUp);
  81     virtual void SetLogicalFunction(int function);
  82
  83     virtual void SetTextForeground(const wxColour& colour);
  84     virtual void SetTextBackground(const wxColour& colour);
  85
  86     virtual void ComputeScaleAndOrigin();
  87
  88     wxGraphicsContext* GetGraphicContext() { return m_graphicContext; }
  89         virtual void SetGraphicsContext( wxGraphicsContext* ctx )
  90                 { delete m_graphicContext; m_graphicContext = ctx; }
  91 protected:
  92     // the true implementations
  93     virtual bool DoFloodFill(wxCoord x, wxCoord y, const wxColour& col,
  94         int style = wxFLOOD_SURFACE);
  95
  96     virtual void DoGradientFillLinear(const wxRect& rect,
  97         const wxColour& initialColour,
  98         const wxColour& destColour,
  99         wxDirection nDirection = wxEAST);
 100
 101     virtual void DoGradientFillConcentric(const wxRect& rect,
 102         const wxColour& initialColour,
 103         const wxColour& destColour,
 104         const wxPoint& circleCenter);
 105
 106     virtual bool DoGetPixel(wxCoord x, wxCoord y, wxColour *col) const;
 107
 108     virtual void DoDrawPoint(wxCoord x, wxCoord y);
 109
 110 #if wxUSE_SPLINES
 111     virtual void DoDrawSpline(wxList *points);
 112 #endif
 113
 114     virtual void DoDrawLine(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2);
 115
 116     virtual void DoDrawArc(wxCoord x1, wxCoord y1,
 117         wxCoord x2, wxCoord y2,
 118         wxCoord xc, wxCoord yc);
 119
 120     virtual void DoDrawCheckMark(wxCoord x, wxCoord y,
 121         wxCoord width, wxCoord height);
 122
 123     virtual void DoDrawEllipticArc(wxCoord x, wxCoord y, wxCoord w, wxCoord h,
 124         double sa, double ea);
 125
 126     virtual void DoDrawRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height);
 127     virtual void DoDrawRoundedRectangle(wxCoord x, wxCoord y,
 128         wxCoord width, wxCoord height,
 129         double radius);
 130     virtual void DoDrawEllipse(wxCoord x, wxCoord y, wxCoord width, wxCoord height);
 131
 132     virtual void DoCrossHair(wxCoord x, wxCoord y);
 133
 134     virtual void DoDrawIcon(const wxIcon& icon, wxCoord x, wxCoord y);
 135     virtual void DoDrawBitmap(const wxBitmap &bmp, wxCoord x, wxCoord y,
 136         bool useMask = false);
 137
 138     virtual void DoDrawText(const wxString& text, wxCoord x, wxCoord y);
 139     virtual void DoDrawRotatedText(const wxString& text, wxCoord x, wxCoord y,
 140         double angle);
 141
 142     virtual bool DoBlit(wxCoord xdest, wxCoord ydest, wxCoord width, wxCoord height,
 143         wxDC *source, wxCoord xsrc, wxCoord ysrc,
 144         int rop = wxCOPY, bool useMask = false, wxCoord xsrcMask = -1, wxCoord ysrcMask = -1);
 145
 146     virtual void DoGetSize(int *,int *) const;
 147     virtual void DoGetSizeMM(int* width, int* height) const;
 148
 149     virtual void DoDrawLines(int n, wxPoint points[],
 150         wxCoord xoffset, wxCoord yoffset);
 151     virtual void DoDrawPolygon(int n, wxPoint points[],
 152         wxCoord xoffset, wxCoord yoffset,
 153         int fillStyle = wxODDEVEN_RULE);
 154     virtual void DoDrawPolyPolygon(int n, int count[], wxPoint points[],
 155         wxCoord xoffset, wxCoord yoffset,
 156         int fillStyle);
 157
 158     virtual void DoSetClippingRegionAsRegion(const wxRegion& region);
 159     virtual void DoSetClippingRegion(wxCoord x, wxCoord y,
 160         wxCoord width, wxCoord height);
 161
 162     virtual void DoGetTextExtent(const wxString& string,
 163         wxCoord *x, wxCoord *y,
 164         wxCoord *descent = NULL,
 165         wxCoord *externalLeading = NULL,
 166         wxFont *theFont = NULL) const;
 167
 168     virtual bool DoGetPartialTextExtents(const wxString& text, wxArrayInt& widths) const;
 169
 170 protected:
 171     // scaling variables
 172     double       m_mm_to_pix_x, m_mm_to_pix_y;
 173
 174         double m_formerScaleX, m_formerScaleY;
 175
 176     wxGraphicsContext* m_graphicContext;
 177 };
 178
 179 #endif
 180
 181 #endif // _WX_GRAPHICS_DC_H_