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 SetLogicalFunction(int function);
  54
  55     virtual void DestroyClippingRegion();
  56
  57     virtual wxCoord GetCharHeight() const;
  58     virtual wxCoord GetCharWidth() const;
  59     virtual void DoGetTextExtent(const wxString& string,
  60                                  wxCoord *x, wxCoord *y,
  61                                  wxCoord *descent = NULL,
  62                                  wxCoord *externalLeading = NULL,
  63                                  const wxFont *theFont = NULL) const;
  64
  65     virtual bool CanDrawBitmap() const { return true; }
  66     virtual bool CanGetTextExtent() const { return true; }
  67     virtual int GetDepth() const;
  68     virtual wxSize GetPPI() const;
  69
  70     // Returns the surface (and increases its ref count)
  71     wxIDirectFBSurfacePtr GetDirectFBSurface() const { return m_surface; }
  72
  73 protected:
  74     // implementation
  75     wxCoord XDEV2LOG(wxCoord x) const       { return DeviceToLogicalX(x); }
  76     wxCoord XDEV2LOGREL(wxCoord x) const    { return DeviceToLogicalXRel(x); }
  77     wxCoord YDEV2LOG(wxCoord y) const       { return DeviceToLogicalY(y); }
  78     wxCoord YDEV2LOGREL(wxCoord y) const    { return DeviceToLogicalYRel(y); }
  79     wxCoord XLOG2DEV(wxCoord x) const       { return LogicalToDeviceX(x); }
  80     wxCoord XLOG2DEVREL(wxCoord x) const    { return LogicalToDeviceXRel(x); }
  81     wxCoord YLOG2DEV(wxCoord y) const       { return LogicalToDeviceY(y); }
  82     wxCoord YLOG2DEVREL(wxCoord y) const    { return LogicalToDeviceYRel(y); }
  83
  84     // initializes the DC from a surface, must be called if default ctor
  85     // was used
  86     void DFBInit(const wxIDirectFBSurfacePtr& surface);
  87
  88     virtual bool DoFloodFill(wxCoord x, wxCoord y, const wxColour& col,
  89                              int style = wxFLOOD_SURFACE);
  90
  91     virtual bool DoGetPixel(wxCoord x, wxCoord y, wxColour *col) const;
  92
  93     virtual void DoDrawPoint(wxCoord x, wxCoord y);
  94     virtual void DoDrawLine(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2);
  95
  96     virtual void DoDrawArc(wxCoord x1, wxCoord y1,
  97                            wxCoord x2, wxCoord y2,
  98                            wxCoord xc, wxCoord yc);
  99     virtual void DoDrawEllipticArc(wxCoord x, wxCoord y, wxCoord w, wxCoord h,
 100                                    double sa, double ea);
 101
 102     virtual void DoDrawRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height);
 103     virtual void DoDrawRoundedRectangle(wxCoord x, wxCoord y,
 104                                         wxCoord width, wxCoord height,
 105                                         double radius);
 106     virtual void DoDrawEllipse(wxCoord x, wxCoord y, wxCoord width, wxCoord height);
 107
 108     virtual void DoCrossHair(wxCoord x, wxCoord y);
 109
 110     virtual void DoDrawIcon(const wxIcon& icon, wxCoord x, wxCoord y);
 111     virtual void DoDrawBitmap(const wxBitmap &bmp, wxCoord x, wxCoord y,
 112                               bool useMask = false);
 113
 114     virtual void DoDrawText(const wxString& text, wxCoord x, wxCoord y);
 115     virtual void DoDrawRotatedText(const wxString& text, wxCoord x, wxCoord y,
 116                                    double angle);
 117
 118     virtual bool DoBlit(wxCoord xdest, wxCoord ydest, wxCoord width, wxCoord height,
 119                         wxDC *source, wxCoord xsrc, wxCoord ysrc,
 120                         int rop = wxCOPY, bool useMask = false, wxCoord xsrcMask = -1, wxCoord ysrcMask = -1);
 121
 122     // this is gnarly - we can't even call this function DoSetClippingRegion()
 123     // because of virtual function hiding
 124     virtual void DoSetClippingRegionAsRegion(const wxRegion& region);
 125     virtual void DoSetClippingRegion(wxCoord x, wxCoord y,
 126                                      wxCoord width, wxCoord height);
 127
 128     virtual void DoGetSize(int *width, int *height) const;
 129     virtual void DoGetSizeMM(int* width, int* height) const;
 130
 131     virtual void DoDrawLines(int n, wxPoint points[],
 132                              wxCoord xoffset, wxCoord yoffset);
 133     virtual void DoDrawPolygon(int n, wxPoint points[],
 134                                wxCoord xoffset, wxCoord yoffset,
 135                                int fillStyle = wxODDEVEN_RULE);
 136
 137     // implementation from now on:
 138 protected:
 139     wxIDirectFBFontPtr GetCurrentFont() const;
 140
 141 private:
 142     // Unified implementation of DrawIcon, DrawBitmap and Blit:
 143     void DoDrawSubBitmap(const wxBitmap &bmp,
 144                          wxCoord x, wxCoord y, wxCoord w, wxCoord h,
 145                          wxCoord destx, wxCoord desty, int rop, bool useMask);
 146     bool DoBlitFromSurface(const wxIDirectFBSurfacePtr& src,
 147                            wxCoord srcx, wxCoord srcy,
 148                            wxCoord w, wxCoord h,
 149                            wxCoord dstx, wxCoord dsty);
 150
 151     // selects colour into surface's state
 152     void SelectColour(const wxColour& clr);
 153
 154 protected:
 155     wxIDirectFBSurfacePtr m_surface;
 156
 157     double            m_mm_to_pix_x, m_mm_to_pix_y;
 158
 159     friend class WXDLLIMPEXP_FWD_CORE wxOverlayImpl; // for Init
 160
 161     DECLARE_DYNAMIC_CLASS(wxDC)
 162 };
 163
 164 #endif // _WX_DFB_DC_H_