include/wx/mac/dc.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        dc.h
   3 // Purpose:     wxDC class
   4 // Author:      AUTHOR
   5 // Modified by:
   6 // Created:     ??/??/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) AUTHOR
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifndef _WX_DC_H_
  13 #define _WX_DC_H_
  14
  15 #ifdef __GNUG__
  16 #pragma interface "dc.h"
  17 #endif
  18
  19 #include "wx/pen.h"
  20 #include "wx/brush.h"
  21 #include "wx/icon.h"
  22 #include "wx/font.h"
  23 #include "wx/gdicmn.h"
  24 #include "wx/mac/aga.h"
  25
  26 //-----------------------------------------------------------------------------
  27 // constants
  28 //-----------------------------------------------------------------------------
  29
  30 #ifndef MM_TEXT
  31 #define MM_TEXT                 0
  32 #define MM_ISOTROPIC    1
  33 #define MM_ANISOTROPIC  2
  34 #define MM_LOMETRIC             3
  35 #define MM_HIMETRIC             4
  36 #define MM_TWIPS                5
  37 #define MM_POINTS               6
  38 #define MM_METRIC               7
  39 #endif
  40
  41 //-----------------------------------------------------------------------------
  42 // global variables
  43 //-----------------------------------------------------------------------------
  44
  45 extern int wxPageNumber;
  46
  47 //-----------------------------------------------------------------------------
  48 // wxDC
  49 //-----------------------------------------------------------------------------
  50
  51 class WXDLLEXPORT wxMacPortSetter
  52 {
  53 public :
  54         wxMacPortSetter( const wxDC* dc ) ;
  55         ~wxMacPortSetter() ;
  56 private :
  57         AGAPortHelper m_ph ;
  58 } ;
  59
  60 class WXDLLEXPORT wxDC: public wxDCBase
  61 {
  62   DECLARE_DYNAMIC_CLASS(wxDC)
  63
  64   public:
  65
  66     wxDC();
  67     ~wxDC();
  68
  69
  70     // implement base class pure virtuals
  71     // ----------------------------------
  72
  73     virtual void Clear();
  74
  75     virtual bool StartDoc( const wxString& WXUNUSED(message) ) { return TRUE; }
  76     virtual void EndDoc(void) {};
  77
  78     virtual void StartPage(void) {};
  79     virtual void EndPage(void) {};
  80
  81     virtual void SetFont(const wxFont& font);
  82     virtual void SetPen(const wxPen& pen);
  83     virtual void SetBrush(const wxBrush& brush);
  84     virtual void SetBackground(const wxBrush& brush);
  85     virtual void SetBackgroundMode(int mode);
  86     virtual void SetPalette(const wxPalette& palette);
  87
  88     virtual void DestroyClippingRegion();
  89
  90     virtual wxCoord GetCharHeight() const;
  91     virtual wxCoord GetCharWidth() const;
  92     virtual void DoGetTextExtent(const wxString& string,
  93                                  wxCoord *x, wxCoord *y,
  94                                  wxCoord *descent = NULL,
  95                                  wxCoord *externalLeading = NULL,
  96                                  wxFont *theFont = NULL) const;
  97
  98     virtual bool CanDrawBitmap() const;
  99     virtual bool CanGetTextExtent() const;
 100     virtual int GetDepth() const;
 101     virtual wxSize GetPPI() const;
 102
 103     virtual void SetMapMode(int mode);
 104     virtual void SetUserScale(double x, double y);
 105
 106     virtual void SetLogicalScale(double x, double y);
 107     virtual void SetLogicalOrigin(wxCoord x, wxCoord y);
 108     virtual void SetDeviceOrigin(wxCoord x, wxCoord y);
 109     virtual void SetAxisOrientation(bool xLeftRight, bool yBottomUp);
 110     virtual void SetLogicalFunction(int function);
 111
 112     virtual void SetTextForeground(const wxColour& colour) ;
 113     virtual void SetTextBackground(const wxColour& colour) ;
 114
 115     void ComputeScaleAndOrigin(void);
 116   public:
 117
 118
 119     wxCoord XDEV2LOG(wxCoord x) const
 120         {
 121           long new_x = x - m_deviceOriginX;
 122           if (new_x > 0)
 123             return (wxCoord)((double)(new_x) / m_scaleX + 0.5) * m_signX + m_logicalOriginX;
 124           else
 125             return (wxCoord)((double)(new_x) / m_scaleX - 0.5) * m_signX + m_logicalOriginX;
 126         }
 127     wxCoord XDEV2LOGREL(wxCoord x) const
 128         {
 129           if (x > 0)
 130             return (wxCoord)((double)(x) / m_scaleX + 0.5);
 131           else
 132             return (wxCoord)((double)(x) / m_scaleX - 0.5);
 133         }
 134     wxCoord YDEV2LOG(wxCoord y) const
 135         {
 136           long new_y = y - m_deviceOriginY;
 137           if (new_y > 0)
 138             return (wxCoord)((double)(new_y) / m_scaleY + 0.5) * m_signY + m_logicalOriginY;
 139           else
 140             return (wxCoord)((double)(new_y) / m_scaleY - 0.5) * m_signY + m_logicalOriginY;
 141         }
 142     wxCoord YDEV2LOGREL(wxCoord y) const
 143         {
 144           if (y > 0)
 145             return (wxCoord)((double)(y) / m_scaleY + 0.5);
 146           else
 147             return (wxCoord)((double)(y) / m_scaleY - 0.5);
 148         }
 149     wxCoord XLOG2DEV(wxCoord x) const
 150         {
 151           long new_x = x - m_logicalOriginX;
 152           if (new_x > 0)
 153             return (wxCoord)((double)(new_x) * m_scaleX + 0.5) * m_signX + m_deviceOriginX;
 154           else
 155             return (wxCoord)((double)(new_x) * m_scaleX - 0.5) * m_signX + m_deviceOriginX;
 156         }
 157     wxCoord XLOG2DEVREL(wxCoord x) const
 158         {
 159           if (x > 0)
 160             return (wxCoord)((double)(x) * m_scaleX + 0.5);
 161           else
 162             return (wxCoord)((double)(x) * m_scaleX - 0.5);
 163         }
 164     wxCoord YLOG2DEV(wxCoord y) const
 165         {
 166           long new_y = y - m_logicalOriginY;
 167           if (new_y > 0)
 168             return (wxCoord)((double)(new_y) * m_scaleY + 0.5) * m_signY + m_deviceOriginY;
 169           else
 170             return (wxCoord)((double)(new_y) * m_scaleY - 0.5) * m_signY + m_deviceOriginY;
 171         }
 172     wxCoord YLOG2DEVREL(wxCoord y) const
 173         {
 174           if (y > 0)
 175             return (wxCoord)((double)(y) * m_scaleY + 0.5);
 176           else
 177             return (wxCoord)((double)(y) * m_scaleY - 0.5);
 178         }
 179
 180 //
 181
 182 protected:
 183     virtual void DoFloodFill(wxCoord x, wxCoord y, const wxColour& col,
 184                              int style = wxFLOOD_SURFACE);
 185
 186     virtual bool DoGetPixel(wxCoord x, wxCoord y, wxColour *col) const;
 187
 188     virtual void DoDrawPoint(wxCoord x, wxCoord y);
 189     virtual void DoDrawLine(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2);
 190
 191     virtual void DoDrawArc(wxCoord x1, wxCoord y1,
 192                            wxCoord x2, wxCoord y2,
 193                            wxCoord xc, wxCoord yc);
 194
 195     virtual void DoDrawEllipticArc(wxCoord x, wxCoord y, wxCoord w, wxCoord h,
 196                                    double sa, double ea);
 197
 198     virtual void DoDrawRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height);
 199     virtual void DoDrawRoundedRectangle(wxCoord x, wxCoord y,
 200                                         wxCoord width, wxCoord height,
 201                                         double radius);
 202     virtual void DoDrawEllipse(wxCoord x, wxCoord y, wxCoord width, wxCoord height);
 203
 204     virtual void DoCrossHair(wxCoord x, wxCoord y);
 205
 206     virtual void DoDrawIcon(const wxIcon& icon, wxCoord x, wxCoord y);
 207     virtual void DoDrawBitmap(const wxBitmap &bmp, wxCoord x, wxCoord y,
 208                               bool useMask = FALSE);
 209
 210     virtual void DoDrawText(const wxString& text, wxCoord x, wxCoord y);
 211     virtual void DoDrawRotatedText(const wxString& text, wxCoord x, wxCoord y,
 212                                    double angle);
 213
 214     virtual bool DoBlit(wxCoord xdest, wxCoord ydest, wxCoord width, wxCoord height,
 215                         wxDC *source, wxCoord xsrc, wxCoord ysrc,
 216                         int rop = wxCOPY, bool useMask = FALSE, wxCoord xsrcMask = -1, wxCoord ysrcMask = -1);
 217
 218     // this is gnarly - we can't even call this function DoSetClippingRegion()
 219     // because of virtual function hiding
 220     virtual void DoSetClippingRegionAsRegion(const wxRegion& region);
 221     virtual void DoSetClippingRegion(wxCoord x, wxCoord y,
 222                                      wxCoord width, wxCoord height);
 223     virtual void DoGetClippingRegion(wxCoord *x, wxCoord *y,
 224                                      wxCoord *width, wxCoord *height)
 225     {
 226         GetClippingBox(x, y, width, height);
 227     }
 228
 229     virtual void DoGetSize(int *width, int *height) const;
 230     virtual void DoGetSizeMM(int* width, int* height) const;
 231
 232     virtual void DoDrawLines(int n, wxPoint points[],
 233                              wxCoord xoffset, wxCoord yoffset);
 234     virtual void DoDrawPolygon(int n, wxPoint points[],
 235                                wxCoord xoffset, wxCoord yoffset,
 236                                int fillStyle = wxODDEVEN_RULE);
 237
 238   protected:
 239     //begin wxmac
 240     // Variables used for scaling
 241     double       m_mm_to_pix_x,m_mm_to_pix_y;
 242     // not yet used
 243     bool         m_needComputeScaleX,m_needComputeScaleY;
 244     // If un-scrolled is non-zero or d.o. changes with scrolling.
 245         // Set using SetInternalDeviceOrigin().
 246         long         m_internalDeviceOriginX,m_internalDeviceOriginY;
 247          // To be set by external classes such as wxScrolledWindow
 248          // using SetDeviceOrigin()
 249     long         m_externalDeviceOriginX,m_externalDeviceOriginY;
 250
 251     // Begin implementation for Mac
 252     public:
 253
 254         GrafPtr                         m_macPort ;
 255         GWorldPtr                       m_macMask ;
 256
 257         // in order to preserve the const inheritance of the virtual functions, we have to
 258         // use mutable variables starting from CWPro 5
 259
 260         void                                    MacInstallFont() const ;
 261         void                                    MacInstallPen() const ;
 262         void                                    MacInstallBrush() const ;
 263
 264         mutable bool    m_macFontInstalled ;
 265         mutable bool    m_macPenInstalled ;
 266         mutable bool    m_macBrushInstalled ;
 267
 268         Rect                                    m_macClipRect ;
 269         Point                                   m_macLocalOrigin ;
 270         void                                    MacSetupPort( AGAPortHelper* ph ) const ;
 271 };
 272
 273 #endif
 274     // _WX_DC_H_