include/wx/dfb/dc.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        wx/dfb/dc.h
   3 // Purpose:     wxDC class
   4 // Author:      Vaclav Slavik
   5 // Created:     2006-08-07
   6 // RCS-ID:      $Id$
   7 // Copyright:   (c) 2006 REA Elektronik GmbH
   8 // Licence:     wxWindows licence
   9 /////////////////////////////////////////////////////////////////////////////
  10
  11 #ifndef _WX_DFB_DC_H_
  12 #define _WX_DFB_DC_H_
  13
  14 #include "wx/defs.h"
  15 #include "wx/region.h"
  16 #include "wx/dfb/dfbptr.h"
  17
  18 wxDFB_DECLARE_INTERFACE(IDirectFBSurface);
  19
  20 //-----------------------------------------------------------------------------
  21 // wxDC
  22 //-----------------------------------------------------------------------------
  23
  24 class WXDLLIMPEXP_CORE wxDC : public wxDCBase
  25 {
  26 public:
  27     wxDC();
  28
  29     // Ctor.
  30     wxDC(const wxIDirectFBSurfacePtr& surface);
  31
  32 public:
  33     // implement base class pure virtuals
  34     // ----------------------------------
  35
  36     virtual void Clear();
  37
  38     virtual bool StartDoc(const wxString& message);
  39     virtual void EndDoc();
  40
  41     virtual void StartPage();
  42     virtual void EndPage();
  43
  44     virtual void SetFont(const wxFont& font);
  45     virtual void SetPen(const wxPen& pen);
  46     virtual void SetBrush(const wxBrush& brush);
  47     virtual void SetBackground(const wxBrush& brush);
  48     virtual void SetBackgroundMode(int mode);
  49 #if wxUSE_PALETTE
  50     virtual void SetPalette(const wxPalette& palette);
  51 #endif
  52
  53     virtual void DestroyClippingRegion();
  54
  55     virtual wxCoord GetCharHeight() const;
  56     virtual wxCoord GetCharWidth() const;
  57     virtual void DoGetTextExtent(const wxString& string,
  58                                  wxCoord *x, wxCoord *y,
  59                                  wxCoord *descent = NULL,
  60                                  wxCoord *externalLeading = NULL,
  61                                  wxFont *theFont = NULL) const;
  62
  63     virtual bool CanDrawBitmap() const { return true; }
  64     virtual bool CanGetTextExtent() const { return true; }
  65     virtual int GetDepth() const;
  66     virtual wxSize GetPPI() const;
  67
  68     virtual void SetMapMode(int mode);
  69     virtual void SetUserScale(double x, double y);
  70     virtual void SetLogicalScale(double x, double y);
  71     virtual void SetLogicalOrigin(wxCoord x, wxCoord y);
  72     virtual void SetDeviceOrigin(wxCoord x, wxCoord y);
  73     virtual void SetAxisOrientation(bool xLeftRight, bool yBottomUp);
  74     virtual void SetLogicalFunction(int function);
  75
  76     // implementation from now on
  77     // --------------------------
  78
  79     virtual void ComputeScaleAndOrigin();
  80
  81     wxCoord XDEV2LOG(wxCoord x) const
  82     {
  83         return wxRound((double)(x - m_deviceOriginX) / m_scaleX) * m_signX + m_logicalOriginX;
  84     }
  85     wxCoord XDEV2LOGREL(wxCoord x) const
  86     {
  87         return wxRound((double)(x) / m_scaleX);
  88     }
  89     wxCoord YDEV2LOG(wxCoord y) const
  90     {
  91         return wxRound((double)(y - m_deviceOriginY) / m_scaleY) * m_signY + m_logicalOriginY;
  92     }
  93     wxCoord YDEV2LOGREL(wxCoord y) const
  94     {
  95         return wxRound((double)(y) / m_scaleY);
  96     }
  97     wxCoord XLOG2DEV(wxCoord x) const
  98     {
  99         return wxRound((double)(x - m_logicalOriginX) * m_scaleX) * m_signX + m_deviceOriginX;
 100     }
 101     wxCoord XLOG2DEVREL(wxCoord x) const
 102     {
 103         return wxRound((double)(x) * m_scaleX);
 104     }
 105     wxCoord YLOG2DEV(wxCoord y) const
 106     {
 107         return wxRound((double)(y - m_logicalOriginY) * m_scaleY) * m_signY + m_deviceOriginY;
 108     }
 109     wxCoord YLOG2DEVREL(wxCoord y) const
 110     {
 111         return wxRound((double)(y) * m_scaleY);
 112     }
 113
 114     // Returns the surface (and increases its ref count)
 115     wxIDirectFBSurfacePtr GetDirectFBSurface() const { return m_surface; }
 116
 117 protected:
 118     // initializes the DC from a surface, must be called if default ctor
 119     // was used
 120     void DFBInit(const wxIDirectFBSurfacePtr& surface);
 121
 122     virtual bool DoFloodFill(wxCoord x, wxCoord y, const wxColour& col,
 123                              int style = wxFLOOD_SURFACE);
 124
 125     virtual bool DoGetPixel(wxCoord x, wxCoord y, wxColour *col) const;
 126
 127     virtual void DoDrawPoint(wxCoord x, wxCoord y);
 128     virtual void DoDrawLine(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2);
 129
 130     virtual void DoDrawArc(wxCoord x1, wxCoord y1,
 131                            wxCoord x2, wxCoord y2,
 132                            wxCoord xc, wxCoord yc);
 133     virtual void DoDrawEllipticArc(wxCoord x, wxCoord y, wxCoord w, wxCoord h,
 134                                    double sa, double ea);
 135
 136     virtual void DoDrawRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height);
 137     virtual void DoDrawRoundedRectangle(wxCoord x, wxCoord y,
 138                                         wxCoord width, wxCoord height,
 139                                         double radius);
 140     virtual void DoDrawEllipse(wxCoord x, wxCoord y, wxCoord width, wxCoord height);
 141
 142     virtual void DoCrossHair(wxCoord x, wxCoord y);
 143
 144     virtual void DoDrawIcon(const wxIcon& icon, wxCoord x, wxCoord y);
 145     virtual void DoDrawBitmap(const wxBitmap &bmp, wxCoord x, wxCoord y,
 146                               bool useMask = false);
 147
 148     virtual void DoDrawText(const wxString& text, wxCoord x, wxCoord y);
 149     virtual void DoDrawRotatedText(const wxString& text, wxCoord x, wxCoord y,
 150                                    double angle);
 151
 152     virtual bool DoBlit(wxCoord xdest, wxCoord ydest, wxCoord width, wxCoord height,
 153                         wxDC *source, wxCoord xsrc, wxCoord ysrc,
 154                         int rop = wxCOPY, bool useMask = false, wxCoord xsrcMask = -1, wxCoord ysrcMask = -1);
 155
 156     // this is gnarly - we can't even call this function DoSetClippingRegion()
 157     // because of virtual function hiding
 158     virtual void DoSetClippingRegionAsRegion(const wxRegion& region);
 159     virtual void DoSetClippingRegion(wxCoord x, wxCoord y,
 160                                      wxCoord width, wxCoord height);
 161
 162     virtual void DoGetSize(int *width, int *height) const;
 163     virtual void DoGetSizeMM(int* width, int* height) const;
 164
 165     virtual void DoDrawLines(int n, wxPoint points[],
 166                              wxCoord xoffset, wxCoord yoffset);
 167     virtual void DoDrawPolygon(int n, wxPoint points[],
 168                                wxCoord xoffset, wxCoord yoffset,
 169                                int fillStyle = wxODDEVEN_RULE);
 170
 171     // implementation from now on:
 172 protected:
 173     wxIDirectFBFontPtr GetCurrentFont() const;
 174
 175 private:
 176     // Unified implementation of DrawIcon, DrawBitmap and Blit:
 177     void DoDrawSubBitmap(const wxBitmap &bmp,
 178                          wxCoord x, wxCoord y, wxCoord w, wxCoord h,
 179                          wxCoord destx, wxCoord desty, int rop, bool useMask);
 180     bool DoBlitFromSurface(const wxIDirectFBSurfacePtr& src,
 181                            wxCoord srcx, wxCoord srcy,
 182                            wxCoord w, wxCoord h,
 183                            wxCoord dstx, wxCoord dsty);
 184
 185     // selects colour into surface's state
 186     void SelectColour(const wxColour& clr);
 187
 188 protected:
 189     wxIDirectFBSurfacePtr m_surface;
 190
 191     double            m_mm_to_pix_x, m_mm_to_pix_y;
 192
 193     friend class WXDLLIMPEXP_CORE wxOverlayImpl; // for Init
 194
 195     DECLARE_DYNAMIC_CLASS(wxDC)
 196 };
 197
 198 #endif // _WX_DFB_DC_H_