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