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/ifacehelpers.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     // Takes ownership of the surface, i.e. does not call AddRef() on it
  31     // but calls Release() on it from dtor.
  32     wxDC(const IDirectFBSurfacePtr& surface);
  33
  34 public:
  35     // implement base class pure virtuals
  36     // ----------------------------------
  37
  38     virtual void Clear();
  39
  40     virtual bool StartDoc(const wxString& message);
  41     virtual void EndDoc();
  42
  43     virtual void StartPage();
  44     virtual void EndPage();
  45
  46     virtual void SetFont(const wxFont& font);
  47     virtual void SetPen(const wxPen& pen);
  48     virtual void SetBrush(const wxBrush& brush);
  49     virtual void SetBackground(const wxBrush& brush);
  50     virtual void SetBackgroundMode(int mode);
  51 #if wxUSE_PALETTE
  52     virtual void SetPalette(const wxPalette& palette);
  53 #endif
  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                                  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     virtual void SetMapMode(int mode);
  71     virtual void SetUserScale(double x, double y);
  72     virtual void SetLogicalScale(double x, double y);
  73     virtual void SetLogicalOrigin(wxCoord x, wxCoord y);
  74     virtual void SetDeviceOrigin(wxCoord x, wxCoord y);
  75     virtual void SetAxisOrientation(bool xLeftRight, bool yBottomUp);
  76     virtual void SetLogicalFunction(int function);
  77
  78     // implementation from now on
  79     // --------------------------
  80
  81     virtual void ComputeScaleAndOrigin();
  82
  83     wxCoord XDEV2LOG(wxCoord x) const
  84     {
  85         wxCoord new_x = x - m_deviceOriginX;
  86         if (new_x > 0)
  87             return (wxCoord)((double)(new_x) / m_scaleX + 0.5) * m_signX + m_logicalOriginX;
  88         else
  89             return (wxCoord)((double)(new_x) / m_scaleX - 0.5) * m_signX + m_logicalOriginX;
  90     }
  91     wxCoord XDEV2LOGREL(wxCoord x) const
  92     {
  93         if (x > 0)
  94             return (wxCoord)((double)(x) / m_scaleX + 0.5);
  95         else
  96             return (wxCoord)((double)(x) / m_scaleX - 0.5);
  97     }
  98     wxCoord YDEV2LOG(wxCoord y) const
  99     {
 100         wxCoord new_y = y - m_deviceOriginY;
 101         if (new_y > 0)
 102             return (wxCoord)((double)(new_y) / m_scaleY + 0.5) * m_signY + m_logicalOriginY;
 103         else
 104             return (wxCoord)((double)(new_y) / m_scaleY - 0.5) * m_signY + m_logicalOriginY;
 105     }
 106     wxCoord YDEV2LOGREL(wxCoord y) const
 107     {
 108         if (y > 0)
 109             return (wxCoord)((double)(y) / m_scaleY + 0.5);
 110         else
 111             return (wxCoord)((double)(y) / m_scaleY - 0.5);
 112     }
 113     wxCoord XLOG2DEV(wxCoord x) const
 114     {
 115         wxCoord new_x = x - m_logicalOriginX;
 116         if (new_x > 0)
 117             return (wxCoord)((double)(new_x) * m_scaleX + 0.5) * m_signX + m_deviceOriginX;
 118         else
 119             return (wxCoord)((double)(new_x) * m_scaleX - 0.5) * m_signX + m_deviceOriginX;
 120     }
 121     wxCoord XLOG2DEVREL(wxCoord x) const
 122     {
 123         if (x > 0)
 124             return (wxCoord)((double)(x) * m_scaleX + 0.5);
 125         else
 126             return (wxCoord)((double)(x) * m_scaleX - 0.5);
 127     }
 128     wxCoord YLOG2DEV(wxCoord y) const
 129     {
 130         wxCoord new_y = y - m_logicalOriginY;
 131         if (new_y > 0)
 132             return (wxCoord)((double)(new_y) * m_scaleY + 0.5) * m_signY + m_deviceOriginY;
 133         else
 134             return (wxCoord)((double)(new_y) * m_scaleY - 0.5) * m_signY + m_deviceOriginY;
 135     }
 136     wxCoord YLOG2DEVREL(wxCoord y) const
 137     {
 138         if (y > 0)
 139             return (wxCoord)((double)(y) * m_scaleY + 0.5);
 140         else
 141             return (wxCoord)((double)(y) * m_scaleY - 0.5);
 142     }
 143
 144     // Returns the surface (and increases its ref count)
 145     IDirectFBSurfacePtr GetDirectFBSurface() const { return m_surface; }
 146
 147 protected:
 148     // initializes the DC from a surface, must be called if default ctor
 149     // was used
 150     void Init(const IDirectFBSurfacePtr& surface);
 151
 152     virtual bool DoFloodFill(wxCoord x, wxCoord y, const wxColour& col,
 153                              int style = wxFLOOD_SURFACE);
 154
 155     virtual bool DoGetPixel(wxCoord x, wxCoord y, wxColour *col) const;
 156
 157     virtual void DoDrawPoint(wxCoord x, wxCoord y);
 158     virtual void DoDrawLine(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2);
 159
 160     virtual void DoDrawArc(wxCoord x1, wxCoord y1,
 161                            wxCoord x2, wxCoord y2,
 162                            wxCoord xc, wxCoord yc);
 163     virtual void DoDrawEllipticArc(wxCoord x, wxCoord y, wxCoord w, wxCoord h,
 164                                    double sa, double ea);
 165
 166     virtual void DoDrawRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height);
 167     virtual void DoDrawRoundedRectangle(wxCoord x, wxCoord y,
 168                                         wxCoord width, wxCoord height,
 169                                         double radius);
 170     virtual void DoDrawEllipse(wxCoord x, wxCoord y, wxCoord width, wxCoord height);
 171
 172     virtual void DoCrossHair(wxCoord x, wxCoord y);
 173
 174     virtual void DoDrawIcon(const wxIcon& icon, wxCoord x, wxCoord y);
 175     virtual void DoDrawBitmap(const wxBitmap &bmp, wxCoord x, wxCoord y,
 176                               bool useMask = false);
 177
 178     virtual void DoDrawText(const wxString& text, wxCoord x, wxCoord y);
 179     virtual void DoDrawRotatedText(const wxString& text, wxCoord x, wxCoord y,
 180                                    double angle);
 181
 182     virtual bool DoBlit(wxCoord xdest, wxCoord ydest, wxCoord width, wxCoord height,
 183                         wxDC *source, wxCoord xsrc, wxCoord ysrc,
 184                         int rop = wxCOPY, bool useMask = false, wxCoord xsrcMask = -1, wxCoord ysrcMask = -1);
 185
 186     // this is gnarly - we can't even call this function DoSetClippingRegion()
 187     // because of virtual function hiding
 188     virtual void DoSetClippingRegionAsRegion(const wxRegion& region);
 189     virtual void DoSetClippingRegion(wxCoord x, wxCoord y,
 190                                      wxCoord width, wxCoord height);
 191
 192     virtual void DoGetSize(int *width, int *height) const;
 193     virtual void DoGetSizeMM(int* width, int* height) const;
 194
 195     virtual void DoDrawLines(int n, wxPoint points[],
 196                              wxCoord xoffset, wxCoord yoffset);
 197     virtual void DoDrawPolygon(int n, wxPoint points[],
 198                                wxCoord xoffset, wxCoord yoffset,
 199                                int fillStyle = wxODDEVEN_RULE);
 200
 201     // implementation from now on:
 202
 203 private:
 204     // Unified implementation of DrawIcon, DrawBitmap and Blit:
 205     void DoDrawSubBitmap(const wxBitmap &bmp,
 206                          wxCoord x, wxCoord y, wxCoord w, wxCoord h,
 207                          wxCoord destx, wxCoord desty, int rop, bool useMask);
 208
 209     // selects colour into surface's state
 210     void SelectColour(const wxColour& clr);
 211
 212 protected:
 213     IDirectFBSurfacePtr m_surface;
 214
 215     double            m_mm_to_pix_x, m_mm_to_pix_y;
 216
 217     DECLARE_DYNAMIC_CLASS(wxDC)
 218 };
 219
 220 #endif // _WX_DFB_DC_H_