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                                  const 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     virtual wxCoord DeviceToLogicalX(wxCoord x) const;
  77     virtual wxCoord DeviceToLogicalY(wxCoord y) const;
  78     virtual wxCoord DeviceToLogicalXRel(wxCoord x) const;
  79     virtual wxCoord DeviceToLogicalYRel(wxCoord y) const;
  80     virtual wxCoord LogicalToDeviceX(wxCoord x) const;
  81     virtual wxCoord LogicalToDeviceY(wxCoord y) const;
  82     virtual wxCoord LogicalToDeviceXRel(wxCoord x) const;
  83     virtual wxCoord LogicalToDeviceYRel(wxCoord y) const ;
  84
  85     // implementation from now on
  86     // --------------------------
  87
  88     virtual void ComputeScaleAndOrigin();
  89
  90     wxCoord XDEV2LOG(wxCoord x) const
  91     {
  92         return wxRound((double)(x - m_deviceOriginX) / m_scaleX) * m_signX + m_logicalOriginX;
  93     }
  94     wxCoord XDEV2LOGREL(wxCoord x) const
  95     {
  96         return wxRound((double)(x) / m_scaleX);
  97     }
  98     wxCoord YDEV2LOG(wxCoord y) const
  99     {
 100         return wxRound((double)(y - m_deviceOriginY) / m_scaleY) * m_signY + m_logicalOriginY;
 101     }
 102     wxCoord YDEV2LOGREL(wxCoord y) const
 103     {
 104         return wxRound((double)(y) / m_scaleY);
 105     }
 106     wxCoord XLOG2DEV(wxCoord x) const
 107     {
 108         return wxRound((double)(x - m_logicalOriginX) * m_scaleX) * m_signX + m_deviceOriginX;
 109     }
 110     wxCoord XLOG2DEVREL(wxCoord x) const
 111     {
 112         return wxRound((double)(x) * m_scaleX);
 113     }
 114     wxCoord YLOG2DEV(wxCoord y) const
 115     {
 116         return wxRound((double)(y - m_logicalOriginY) * m_scaleY) * m_signY + m_deviceOriginY;
 117     }
 118     wxCoord YLOG2DEVREL(wxCoord y) const
 119     {
 120         return wxRound((double)(y) * m_scaleY);
 121     }
 122
 123     // Returns the surface (and increases its ref count)
 124     wxIDirectFBSurfacePtr GetDirectFBSurface() const { return m_surface; }
 125
 126 protected:
 127     // initializes the DC from a surface, must be called if default ctor
 128     // was used
 129     void DFBInit(const wxIDirectFBSurfacePtr& surface);
 130
 131     virtual bool DoFloodFill(wxCoord x, wxCoord y, const wxColour& col,
 132                              int style = wxFLOOD_SURFACE);
 133
 134     virtual bool DoGetPixel(wxCoord x, wxCoord y, wxColour *col) const;
 135
 136     virtual void DoDrawPoint(wxCoord x, wxCoord y);
 137     virtual void DoDrawLine(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2);
 138
 139     virtual void DoDrawArc(wxCoord x1, wxCoord y1,
 140                            wxCoord x2, wxCoord y2,
 141                            wxCoord xc, wxCoord yc);
 142     virtual void DoDrawEllipticArc(wxCoord x, wxCoord y, wxCoord w, wxCoord h,
 143                                    double sa, double ea);
 144
 145     virtual void DoDrawRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height);
 146     virtual void DoDrawRoundedRectangle(wxCoord x, wxCoord y,
 147                                         wxCoord width, wxCoord height,
 148                                         double radius);
 149     virtual void DoDrawEllipse(wxCoord x, wxCoord y, wxCoord width, wxCoord height);
 150
 151     virtual void DoCrossHair(wxCoord x, wxCoord y);
 152
 153     virtual void DoDrawIcon(const wxIcon& icon, wxCoord x, wxCoord y);
 154     virtual void DoDrawBitmap(const wxBitmap &bmp, wxCoord x, wxCoord y,
 155                               bool useMask = false);
 156
 157     virtual void DoDrawText(const wxString& text, wxCoord x, wxCoord y);
 158     virtual void DoDrawRotatedText(const wxString& text, wxCoord x, wxCoord y,
 159                                    double angle);
 160
 161     virtual bool DoBlit(wxCoord xdest, wxCoord ydest, wxCoord width, wxCoord height,
 162                         wxDC *source, wxCoord xsrc, wxCoord ysrc,
 163                         int rop = wxCOPY, bool useMask = false, wxCoord xsrcMask = -1, wxCoord ysrcMask = -1);
 164
 165     // this is gnarly - we can't even call this function DoSetClippingRegion()
 166     // because of virtual function hiding
 167     virtual void DoSetClippingRegionAsRegion(const wxRegion& region);
 168     virtual void DoSetClippingRegion(wxCoord x, wxCoord y,
 169                                      wxCoord width, wxCoord height);
 170
 171     virtual void DoGetSize(int *width, int *height) const;
 172     virtual void DoGetSizeMM(int* width, int* height) const;
 173
 174     virtual void DoDrawLines(int n, wxPoint points[],
 175                              wxCoord xoffset, wxCoord yoffset);
 176     virtual void DoDrawPolygon(int n, wxPoint points[],
 177                                wxCoord xoffset, wxCoord yoffset,
 178                                int fillStyle = wxODDEVEN_RULE);
 179
 180     // implementation from now on:
 181 protected:
 182     wxIDirectFBFontPtr GetCurrentFont() const;
 183
 184 private:
 185     // Unified implementation of DrawIcon, DrawBitmap and Blit:
 186     void DoDrawSubBitmap(const wxBitmap &bmp,
 187                          wxCoord x, wxCoord y, wxCoord w, wxCoord h,
 188                          wxCoord destx, wxCoord desty, int rop, bool useMask);
 189     bool DoBlitFromSurface(const wxIDirectFBSurfacePtr& src,
 190                            wxCoord srcx, wxCoord srcy,
 191                            wxCoord w, wxCoord h,
 192                            wxCoord dstx, wxCoord dsty);
 193
 194     // selects colour into surface's state
 195     void SelectColour(const wxColour& clr);
 196
 197 protected:
 198     wxIDirectFBSurfacePtr m_surface;
 199
 200     double            m_mm_to_pix_x, m_mm_to_pix_y;
 201
 202     friend class WXDLLIMPEXP_CORE wxOverlayImpl; // for Init
 203
 204     DECLARE_DYNAMIC_CLASS(wxDC)
 205 };
 206
 207 #endif // _WX_DFB_DC_H_