include/wx/mac/dc.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        dc.h
   3 // Purpose:     wxDC class
   4 // Author:      Stefan Csomor
   5 // Modified by:
   6 // Created:     1998-01-01
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Stefan Csomor
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifndef _WX_DC_H_
  13 #define _WX_DC_H_
  14
  15 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
  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
  25 //-----------------------------------------------------------------------------
  26 // constants
  27 //-----------------------------------------------------------------------------
  28
  29 #ifndef MM_TEXT
  30 #define MM_TEXT            0
  31 #define MM_ISOTROPIC    1
  32 #define MM_ANISOTROPIC    2
  33 #define MM_LOMETRIC        3
  34 #define MM_HIMETRIC        4
  35 #define MM_TWIPS        5
  36 #define MM_POINTS        6
  37 #define MM_METRIC        7
  38 #endif
  39
  40 //-----------------------------------------------------------------------------
  41 // global variables
  42 //-----------------------------------------------------------------------------
  43
  44 extern int wxPageNumber;
  45
  46 class wxMacPortStateHelper ;
  47 //-----------------------------------------------------------------------------
  48 // wxDC
  49 //-----------------------------------------------------------------------------
  50
  51 class WXDLLEXPORT wxDC: public wxDCBase
  52 {
  53     DECLARE_DYNAMIC_CLASS(wxDC)
  54     DECLARE_NO_COPY_CLASS(wxDC)
  55
  56   public:
  57
  58     wxDC();
  59     ~wxDC();
  60
  61
  62     // implement base class pure virtuals
  63     // ----------------------------------
  64
  65     virtual void Clear();
  66
  67     virtual bool StartDoc( const wxString& WXUNUSED(message) ) { return TRUE; }
  68     virtual void EndDoc(void) {};
  69
  70     virtual void StartPage(void) {};
  71     virtual void EndPage(void) {};
  72
  73     virtual void SetFont(const wxFont& font);
  74     virtual void SetPen(const wxPen& pen);
  75     virtual void SetBrush(const wxBrush& brush);
  76     virtual void SetBackground(const wxBrush& brush);
  77     virtual void SetBackgroundMode(int mode);
  78     virtual void SetPalette(const wxPalette& palette);
  79
  80     virtual void DestroyClippingRegion();
  81
  82     virtual wxCoord GetCharHeight() const;
  83     virtual wxCoord GetCharWidth() const;
  84     virtual void DoGetTextExtent(const wxString& string,
  85                                  wxCoord *x, wxCoord *y,
  86                                  wxCoord *descent = NULL,
  87                                  wxCoord *externalLeading = NULL,
  88                                  wxFont *theFont = NULL) const;
  89     virtual bool DoGetPartialTextExtents(const wxString& text, wxArrayInt& widths) const;
  90
  91     virtual bool CanDrawBitmap() const;
  92     virtual bool CanGetTextExtent() const;
  93     virtual int GetDepth() const;
  94     virtual wxSize GetPPI() const;
  95
  96     virtual void SetMapMode(int mode);
  97     virtual void SetUserScale(double x, double y);
  98
  99     virtual void SetLogicalScale(double x, double y);
 100     virtual void SetLogicalOrigin(wxCoord x, wxCoord y);
 101     virtual void SetDeviceOrigin(wxCoord x, wxCoord y);
 102     virtual void SetAxisOrientation(bool xLeftRight, bool yBottomUp);
 103     virtual void SetLogicalFunction(int function);
 104
 105     virtual void SetTextForeground(const wxColour& colour) ;
 106     virtual void SetTextBackground(const wxColour& colour) ;
 107
 108     void ComputeScaleAndOrigin(void);
 109   public:
 110
 111
 112     wxCoord XDEV2LOG(wxCoord x) const
 113     {
 114       long new_x = x - m_deviceOriginX ;
 115       if (new_x > 0)
 116         return (wxCoord)((double)(new_x) / m_scaleX + 0.5) * m_signX + m_logicalOriginX;
 117       else
 118         return (wxCoord)((double)(new_x) / m_scaleX - 0.5) * m_signX + m_logicalOriginX;
 119     }
 120     wxCoord XDEV2LOGREL(wxCoord x) const
 121     {
 122       if (x > 0)
 123         return (wxCoord)((double)(x) / m_scaleX + 0.5);
 124       else
 125         return (wxCoord)((double)(x) / m_scaleX - 0.5);
 126     }
 127     wxCoord YDEV2LOG(wxCoord y) const
 128     {
 129       long new_y = y - m_deviceOriginY ;
 130       if (new_y > 0)
 131         return (wxCoord)((double)(new_y) / m_scaleY + 0.5) * m_signY + m_logicalOriginY;
 132       else
 133         return (wxCoord)((double)(new_y) / m_scaleY - 0.5) * m_signY + m_logicalOriginY;
 134     }
 135     wxCoord YDEV2LOGREL(wxCoord y) const
 136     {
 137       if (y > 0)
 138         return (wxCoord)((double)(y) / m_scaleY + 0.5);
 139       else
 140         return (wxCoord)((double)(y) / m_scaleY - 0.5);
 141     }
 142     wxCoord XLOG2DEV(wxCoord x) const
 143     {
 144       long new_x = x - m_logicalOriginX;
 145       if (new_x > 0)
 146         return (wxCoord)((double)(new_x) * m_scaleX + 0.5) * m_signX + m_deviceOriginX  ;
 147       else
 148         return (wxCoord)((double)(new_x) * m_scaleX - 0.5) * m_signX + m_deviceOriginX ;
 149     }
 150     wxCoord XLOG2DEVREL(wxCoord x) const
 151     {
 152       if (x > 0)
 153         return (wxCoord)((double)(x) * m_scaleX + 0.5);
 154       else
 155         return (wxCoord)((double)(x) * m_scaleX - 0.5);
 156     }
 157     wxCoord YLOG2DEV(wxCoord y) const
 158     {
 159       long new_y = y - m_logicalOriginY ;
 160       if (new_y > 0)
 161         return (wxCoord)((double)(new_y) * m_scaleY + 0.5) * m_signY + m_deviceOriginY ;
 162       else
 163         return (wxCoord)((double)(new_y) * m_scaleY - 0.5) * m_signY + m_deviceOriginY ;
 164     }
 165     wxCoord YLOG2DEVREL(wxCoord y) const
 166     {
 167       if (y > 0)
 168         return (wxCoord)((double)(y) * m_scaleY + 0.5);
 169       else
 170         return (wxCoord)((double)(y) * m_scaleY - 0.5);
 171     }
 172     wxCoord XLOG2DEVMAC(wxCoord x) const
 173     {
 174       long new_x = x - m_logicalOriginX;
 175       if (new_x > 0)
 176         return (wxCoord)((double)(new_x) * m_scaleX + 0.5) * m_signX + m_deviceOriginX + m_macLocalOrigin.x ;
 177       else
 178         return (wxCoord)((double)(new_x) * m_scaleX - 0.5) * m_signX + m_deviceOriginX + m_macLocalOrigin.x ;
 179     }
 180     wxCoord YLOG2DEVMAC(wxCoord y) const
 181     {
 182       long new_y = y - m_logicalOriginY ;
 183       if (new_y > 0)
 184         return (wxCoord)((double)(new_y) * m_scaleY + 0.5) * m_signY + m_deviceOriginY + m_macLocalOrigin.y ;
 185       else
 186         return (wxCoord)((double)(new_y) * m_scaleY - 0.5) * m_signY + m_deviceOriginY + m_macLocalOrigin.y ;
 187     }
 188
 189     WXHRGN MacGetCurrentClipRgn() { return m_macCurrentClipRgn ; }
 190     static void MacSetupBackgroundForCurrentPort(const wxBrush& background ) ;
 191 //
 192
 193 protected:
 194     virtual bool DoFloodFill(wxCoord x, wxCoord y, const wxColour& col,
 195                              int style = wxFLOOD_SURFACE);
 196
 197     virtual bool DoGetPixel(wxCoord x, wxCoord y, wxColour *col) const;
 198
 199     virtual void DoDrawPoint(wxCoord x, wxCoord y);
 200     virtual void DoDrawLine(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2);
 201
 202     virtual void DoDrawArc(wxCoord x1, wxCoord y1,
 203                            wxCoord x2, wxCoord y2,
 204                            wxCoord xc, wxCoord yc);
 205
 206     virtual void DoDrawEllipticArc(wxCoord x, wxCoord y, wxCoord w, wxCoord h,
 207                                    double sa, double ea);
 208
 209     virtual void DoDrawRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height);
 210     virtual void DoDrawRoundedRectangle(wxCoord x, wxCoord y,
 211                                         wxCoord width, wxCoord height,
 212                                         double radius);
 213     virtual void DoDrawEllipse(wxCoord x, wxCoord y, wxCoord width, wxCoord height);
 214
 215     virtual void DoCrossHair(wxCoord x, wxCoord y);
 216
 217     virtual void DoDrawIcon(const wxIcon& icon, wxCoord x, wxCoord y);
 218     virtual void DoDrawBitmap(const wxBitmap &bmp, wxCoord x, wxCoord y,
 219                               bool useMask = FALSE);
 220
 221     virtual void DoDrawText(const wxString& text, wxCoord x, wxCoord y);
 222     virtual void DoDrawRotatedText(const wxString& text, wxCoord x, wxCoord y,
 223                                    double angle);
 224
 225     virtual bool DoBlit(wxCoord xdest, wxCoord ydest, wxCoord width, wxCoord height,
 226                         wxDC *source, wxCoord xsrc, wxCoord ysrc,
 227                         int rop = wxCOPY, bool useMask = FALSE, wxCoord xsrcMask = -1, wxCoord ysrcMask = -1);
 228
 229     // this is gnarly - we can't even call this function DoSetClippingRegion()
 230     // because of virtual function hiding
 231     virtual void DoSetClippingRegionAsRegion(const wxRegion& region);
 232     virtual void DoSetClippingRegion(wxCoord x, wxCoord y,
 233                                      wxCoord width, wxCoord height);
 234     virtual void DoGetClippingRegion(wxCoord *x, wxCoord *y,
 235                                      wxCoord *width, wxCoord *height)
 236     {
 237         GetClippingBox(x, y, width, height);
 238     }
 239
 240     virtual void DoGetSizeMM(int* width, int* height) const;
 241
 242     virtual void DoDrawLines(int n, wxPoint points[],
 243                              wxCoord xoffset, wxCoord yoffset);
 244     virtual void DoDrawPolygon(int n, wxPoint points[],
 245                                wxCoord xoffset, wxCoord yoffset,
 246                                int fillStyle = wxODDEVEN_RULE);
 247
 248   protected:
 249     //begin wxmac
 250     // Variables used for scaling
 251     double       m_mm_to_pix_x,m_mm_to_pix_y;
 252     // not yet used
 253     bool         m_needComputeScaleX,m_needComputeScaleY;
 254     // If un-scrolled is non-zero or d.o. changes with scrolling.
 255     // Set using SetInternalDeviceOrigin().
 256     long         m_internalDeviceOriginX,m_internalDeviceOriginY;
 257      // To be set by external classes such as wxScrolledWindow
 258      // using SetDeviceOrigin()
 259     long         m_externalDeviceOriginX,m_externalDeviceOriginY;
 260
 261     // Begin implementation for Mac
 262     public:
 263
 264     WXHDC                m_macPort ;
 265     WXHBITMAP            m_macMask ;
 266
 267     // in order to preserve the const inheritance of the virtual functions, we have to
 268     // use mutable variables starting from CWPro 5
 269
 270     void                    MacInstallFont() const ;
 271     void                    MacInstallPen() const ;
 272     void                    MacInstallBrush() const ;
 273
 274     mutable bool    m_macFontInstalled ;
 275     mutable bool    m_macPenInstalled ;
 276     mutable bool    m_macBrushInstalled ;
 277
 278     WXHRGN                    m_macBoundaryClipRgn ;
 279     WXHRGN                  m_macCurrentClipRgn ;
 280     wxPoint                    m_macLocalOrigin ;
 281     void                    MacSetupPort( wxMacPortStateHelper* ph ) const ;
 282     void                    MacCleanupPort( wxMacPortStateHelper* ph ) const ;
 283     mutable void*                   m_macATSUIStyle ;
 284     mutable wxMacPortStateHelper*   m_macCurrentPortStateHelper ;
 285     mutable bool                    m_macFormerAliasState ;
 286     mutable short                   m_macFormerAliasSize ;
 287     mutable bool                    m_macAliasWasEnabled ;
 288     mutable void*                   m_macForegroundPixMap ;
 289     mutable void*                   m_macBackgroundPixMap ;
 290 };
 291
 292 #endif
 293     // _WX_DC_H_