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     wxDC(const IDirectFBSurfacePtr& 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         wxCoord new_x = x - m_deviceOriginX;
  84         if (new_x > 0)
  85             return (wxCoord)((double)(new_x) / m_scaleX + 0.5) * m_signX + m_logicalOriginX;
  86         else
  87             return (wxCoord)((double)(new_x) / m_scaleX - 0.5) * m_signX + m_logicalOriginX;
  88     }
  89     wxCoord XDEV2LOGREL(wxCoord x) const
  90     {
  91         if (x > 0)
  92             return (wxCoord)((double)(x) / m_scaleX + 0.5);
  93         else
  94             return (wxCoord)((double)(x) / m_scaleX - 0.5);
  95     }
  96     wxCoord YDEV2LOG(wxCoord y) const
  97     {
  98         wxCoord new_y = y - m_deviceOriginY;
  99         if (new_y > 0)
 100             return (wxCoord)((double)(new_y) / m_scaleY + 0.5) * m_signY + m_logicalOriginY;
 101         else
 102             return (wxCoord)((double)(new_y) / m_scaleY - 0.5) * m_signY + m_logicalOriginY;
 103     }
 104     wxCoord YDEV2LOGREL(wxCoord y) const
 105     {
 106         if (y > 0)
 107             return (wxCoord)((double)(y) / m_scaleY + 0.5);
 108         else
 109             return (wxCoord)((double)(y) / m_scaleY - 0.5);
 110     }
 111     wxCoord XLOG2DEV(wxCoord x) const
 112     {
 113         wxCoord new_x = x - m_logicalOriginX;
 114         if (new_x > 0)
 115             return (wxCoord)((double)(new_x) * m_scaleX + 0.5) * m_signX + m_deviceOriginX;
 116         else
 117             return (wxCoord)((double)(new_x) * m_scaleX - 0.5) * m_signX + m_deviceOriginX;
 118     }
 119     wxCoord XLOG2DEVREL(wxCoord x) const
 120     {
 121         if (x > 0)
 122             return (wxCoord)((double)(x) * m_scaleX + 0.5);
 123         else
 124             return (wxCoord)((double)(x) * m_scaleX - 0.5);
 125     }
 126     wxCoord YLOG2DEV(wxCoord y) const
 127     {
 128         wxCoord new_y = y - m_logicalOriginY;
 129         if (new_y > 0)
 130             return (wxCoord)((double)(new_y) * m_scaleY + 0.5) * m_signY + m_deviceOriginY;
 131         else
 132             return (wxCoord)((double)(new_y) * m_scaleY - 0.5) * m_signY + m_deviceOriginY;
 133     }
 134     wxCoord YLOG2DEVREL(wxCoord y) const
 135     {
 136         if (y > 0)
 137             return (wxCoord)((double)(y) * m_scaleY + 0.5);
 138         else
 139             return (wxCoord)((double)(y) * m_scaleY - 0.5);
 140     }
 141
 142     // Returns the surface (and increases its ref count)
 143     IDirectFBSurfacePtr GetDirectFBSurface() const { return m_surface; }
 144
 145 protected:
 146     // initializes the DC from a surface, must be called if default ctor
 147     // was used
 148     void Init(const IDirectFBSurfacePtr& surface);
 149
 150     virtual bool DoFloodFill(wxCoord x, wxCoord y, const wxColour& col,
 151                              int style = wxFLOOD_SURFACE);
 152
 153     virtual bool DoGetPixel(wxCoord x, wxCoord y, wxColour *col) const;
 154
 155     virtual void DoDrawPoint(wxCoord x, wxCoord y);
 156     virtual void DoDrawLine(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2);
 157
 158     virtual void DoDrawArc(wxCoord x1, wxCoord y1,
 159                            wxCoord x2, wxCoord y2,
 160                            wxCoord xc, wxCoord yc);
 161     virtual void DoDrawEllipticArc(wxCoord x, wxCoord y, wxCoord w, wxCoord h,
 162                                    double sa, double ea);
 163
 164     virtual void DoDrawRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height);
 165     virtual void DoDrawRoundedRectangle(wxCoord x, wxCoord y,
 166                                         wxCoord width, wxCoord height,
 167                                         double radius);
 168     virtual void DoDrawEllipse(wxCoord x, wxCoord y, wxCoord width, wxCoord height);
 169
 170     virtual void DoCrossHair(wxCoord x, wxCoord y);
 171
 172     virtual void DoDrawIcon(const wxIcon& icon, wxCoord x, wxCoord y);
 173     virtual void DoDrawBitmap(const wxBitmap &bmp, wxCoord x, wxCoord y,
 174                               bool useMask = false);
 175
 176     virtual void DoDrawText(const wxString& text, wxCoord x, wxCoord y);
 177     virtual void DoDrawRotatedText(const wxString& text, wxCoord x, wxCoord y,
 178                                    double angle);
 179
 180     virtual bool DoBlit(wxCoord xdest, wxCoord ydest, wxCoord width, wxCoord height,
 181                         wxDC *source, wxCoord xsrc, wxCoord ysrc,
 182                         int rop = wxCOPY, bool useMask = false, wxCoord xsrcMask = -1, wxCoord ysrcMask = -1);
 183
 184     // this is gnarly - we can't even call this function DoSetClippingRegion()
 185     // because of virtual function hiding
 186     virtual void DoSetClippingRegionAsRegion(const wxRegion& region);
 187     virtual void DoSetClippingRegion(wxCoord x, wxCoord y,
 188                                      wxCoord width, wxCoord height);
 189
 190     virtual void DoGetSize(int *width, int *height) const;
 191     virtual void DoGetSizeMM(int* width, int* height) const;
 192
 193     virtual void DoDrawLines(int n, wxPoint points[],
 194                              wxCoord xoffset, wxCoord yoffset);
 195     virtual void DoDrawPolygon(int n, wxPoint points[],
 196                                wxCoord xoffset, wxCoord yoffset,
 197                                int fillStyle = wxODDEVEN_RULE);
 198
 199     // implementation from now on:
 200
 201 private:
 202     // Unified implementation of DrawIcon, DrawBitmap and Blit:
 203     void DoDrawSubBitmap(const wxBitmap &bmp,
 204                          wxCoord x, wxCoord y, wxCoord w, wxCoord h,
 205                          wxCoord destx, wxCoord desty, int rop, bool useMask);
 206
 207     // selects colour into surface's state
 208     void SelectColour(const wxColour& clr);
 209
 210 protected:
 211     IDirectFBSurfacePtr m_surface;
 212
 213     double            m_mm_to_pix_x, m_mm_to_pix_y;
 214
 215     DECLARE_DYNAMIC_CLASS(wxDC)
 216 };
 217
 218 #endif // _WX_DFB_DC_H_