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