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
  48 class WXDLLEXPORT wxGraphicPath
  49 {
  50 public :
  51     virtual ~wxGraphicPath() {}
  52
  53     virtual void MoveToPoint( wxCoord x1 , wxCoord y1 ) = 0 ;
  54
  55     virtual void AddLineToPoint( wxCoord x1 , wxCoord y1 ) = 0 ;
  56
  57     virtual void AddRectangle( wxCoord x, wxCoord y, wxCoord w, wxCoord h ) = 0 ;
  58
  59     virtual void AddCircle( wxCoord x, wxCoord y , wxCoord r ) = 0 ;
  60
  61     virtual void CloseSubpath() = 0 ;
  62 } ;
  63
  64 class WXDLLEXPORT wxGraphicContext
  65 {
  66 public:
  67     virtual ~wxGraphicContext() {}
  68
  69     virtual void Clip( const wxRegion &region ) = 0 ;
  70
  71     virtual void StrokePath( const wxGraphicPath *path ) = 0 ;
  72
  73     virtual void DrawPath( const wxGraphicPath *path , int fillStyle = wxWINDING_RULE ) = 0 ;
  74
  75     virtual void FillPath( const wxGraphicPath *path , const wxColor &fillColor , int fillStyle = wxWINDING_RULE ) = 0 ;
  76
  77     virtual void SetPen( const wxPen &pen ) = 0 ;
  78
  79     virtual void SetBrush( const wxBrush &brush ) = 0 ;
  80
  81     virtual wxGraphicPath* CreatePath() = 0 ;
  82 } ;
  83
  84 //-----------------------------------------------------------------------------
  85 // wxDC
  86 //-----------------------------------------------------------------------------
  87
  88 class WXDLLEXPORT wxDC: public wxDCBase
  89 {
  90     DECLARE_DYNAMIC_CLASS(wxDC)
  91     DECLARE_NO_COPY_CLASS(wxDC)
  92
  93   public:
  94
  95     wxDC();
  96     ~wxDC();
  97
  98
  99     // implement base class pure virtuals
 100     // ----------------------------------
 101
 102     virtual void Clear();
 103
 104     virtual bool StartDoc( const wxString& WXUNUSED(message) ) { return true; }
 105     virtual void EndDoc(void) {};
 106
 107     virtual void StartPage(void) {};
 108     virtual void EndPage(void) {};
 109
 110     virtual void SetFont(const wxFont& font);
 111     virtual void SetPen(const wxPen& pen);
 112     virtual void SetBrush(const wxBrush& brush);
 113     virtual void SetBackground(const wxBrush& brush);
 114     virtual void SetBackgroundMode(int mode);
 115     virtual void SetPalette(const wxPalette& palette);
 116
 117     virtual void DestroyClippingRegion();
 118
 119     virtual wxCoord GetCharHeight() const;
 120     virtual wxCoord GetCharWidth() const;
 121     virtual void DoGetTextExtent(const wxString& string,
 122                                  wxCoord *x, wxCoord *y,
 123                                  wxCoord *descent = NULL,
 124                                  wxCoord *externalLeading = NULL,
 125                                  wxFont *theFont = NULL) const;
 126     virtual bool DoGetPartialTextExtents(const wxString& text, wxArrayInt& widths) const;
 127
 128     virtual bool CanDrawBitmap() const;
 129     virtual bool CanGetTextExtent() const;
 130     virtual int GetDepth() const;
 131     virtual wxSize GetPPI() const;
 132
 133     virtual void SetMapMode(int mode);
 134     virtual void SetUserScale(double x, double y);
 135
 136     virtual void SetLogicalScale(double x, double y);
 137     virtual void SetLogicalOrigin(wxCoord x, wxCoord y);
 138     virtual void SetDeviceOrigin(wxCoord x, wxCoord y);
 139     virtual void SetAxisOrientation(bool xLeftRight, bool yBottomUp);
 140     virtual void SetLogicalFunction(int function);
 141
 142     virtual void SetTextForeground(const wxColour& colour) ;
 143     virtual void SetTextBackground(const wxColour& colour) ;
 144
 145     virtual void ComputeScaleAndOrigin();
 146
 147   public:
 148
 149     wxCoord XDEV2LOG(wxCoord x) const
 150     {
 151       long new_x = x - m_deviceOriginX ;
 152       if (new_x > 0)
 153         return (wxCoord)((double)(new_x) / m_scaleX + 0.5) * m_signX + m_logicalOriginX;
 154       else
 155         return (wxCoord)((double)(new_x) / m_scaleX - 0.5) * m_signX + m_logicalOriginX;
 156     }
 157     wxCoord XDEV2LOGREL(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 YDEV2LOG(wxCoord y) const
 165     {
 166       long new_y = y - m_deviceOriginY ;
 167       if (new_y > 0)
 168         return (wxCoord)((double)(new_y) / m_scaleY + 0.5) * m_signY + m_logicalOriginY;
 169       else
 170         return (wxCoord)((double)(new_y) / m_scaleY - 0.5) * m_signY + m_logicalOriginY;
 171     }
 172     wxCoord YDEV2LOGREL(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     wxCoord XLOG2DEV(wxCoord x) const
 180     {
 181       long new_x = x - m_logicalOriginX;
 182       if (new_x > 0)
 183         return (wxCoord)((double)(new_x) * m_scaleX + 0.5) * m_signX + m_deviceOriginX  ;
 184       else
 185         return (wxCoord)((double)(new_x) * m_scaleX - 0.5) * m_signX + m_deviceOriginX ;
 186     }
 187     wxCoord XLOG2DEVREL(wxCoord x) const
 188     {
 189       if (x > 0)
 190         return (wxCoord)((double)(x) * m_scaleX + 0.5);
 191       else
 192         return (wxCoord)((double)(x) * m_scaleX - 0.5);
 193     }
 194     wxCoord YLOG2DEV(wxCoord y) const
 195     {
 196       long new_y = y - m_logicalOriginY ;
 197       if (new_y > 0)
 198         return (wxCoord)((double)(new_y) * m_scaleY + 0.5) * m_signY + m_deviceOriginY ;
 199       else
 200         return (wxCoord)((double)(new_y) * m_scaleY - 0.5) * m_signY + m_deviceOriginY ;
 201     }
 202     wxCoord YLOG2DEVREL(wxCoord y) const
 203     {
 204       if (y > 0)
 205         return (wxCoord)((double)(y) * m_scaleY + 0.5);
 206       else
 207         return (wxCoord)((double)(y) * m_scaleY - 0.5);
 208     }
 209     wxCoord XLOG2DEVMAC(wxCoord x) const
 210     {
 211       long new_x = x - m_logicalOriginX;
 212       if (new_x > 0)
 213         return (wxCoord)((double)(new_x) * m_scaleX + 0.5) * m_signX + m_deviceOriginX + m_macLocalOrigin.x ;
 214       else
 215         return (wxCoord)((double)(new_x) * m_scaleX - 0.5) * m_signX + m_deviceOriginX + m_macLocalOrigin.x ;
 216     }
 217     wxCoord YLOG2DEVMAC(wxCoord y) const
 218     {
 219       long new_y = y - m_logicalOriginY ;
 220       if (new_y > 0)
 221         return (wxCoord)((double)(new_y) * m_scaleY + 0.5) * m_signY + m_deviceOriginY + m_macLocalOrigin.y ;
 222       else
 223         return (wxCoord)((double)(new_y) * m_scaleY - 0.5) * m_signY + m_deviceOriginY + m_macLocalOrigin.y ;
 224     }
 225 #if wxMAC_USE_CORE_GRAPHICS
 226     wxGraphicContext* GetGraphicContext() { return m_graphicContext ; }
 227 #else
 228     WXHRGN MacGetCurrentClipRgn() { return m_macCurrentClipRgn ; }
 229     static void MacSetupBackgroundForCurrentPort(const wxBrush& background ) ;
 230 #endif
 231 //
 232
 233 protected:
 234     virtual bool DoFloodFill(wxCoord x, wxCoord y, const wxColour& col,
 235                              int style = wxFLOOD_SURFACE);
 236
 237     virtual bool DoGetPixel(wxCoord x, wxCoord y, wxColour *col) const;
 238
 239     virtual void DoDrawPoint(wxCoord x, wxCoord y);
 240     virtual void DoDrawLine(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2);
 241
 242     virtual void DoDrawArc(wxCoord x1, wxCoord y1,
 243                            wxCoord x2, wxCoord y2,
 244                            wxCoord xc, wxCoord yc);
 245
 246     virtual void DoDrawEllipticArc(wxCoord x, wxCoord y, wxCoord w, wxCoord h,
 247                                    double sa, double ea);
 248
 249     virtual void DoDrawRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height);
 250     virtual void DoDrawRoundedRectangle(wxCoord x, wxCoord y,
 251                                         wxCoord width, wxCoord height,
 252                                         double radius);
 253     virtual void DoDrawEllipse(wxCoord x, wxCoord y, wxCoord width, wxCoord height);
 254
 255     virtual void DoCrossHair(wxCoord x, wxCoord y);
 256
 257     virtual void DoDrawIcon(const wxIcon& icon, wxCoord x, wxCoord y);
 258     virtual void DoDrawBitmap(const wxBitmap &bmp, wxCoord x, wxCoord y,
 259                               bool useMask = false);
 260
 261     virtual void DoDrawText(const wxString& text, wxCoord x, wxCoord y);
 262     virtual void DoDrawRotatedText(const wxString& text, wxCoord x, wxCoord y,
 263                                    double angle);
 264
 265     virtual bool DoBlit(wxCoord xdest, wxCoord ydest, wxCoord width, wxCoord height,
 266                         wxDC *source, wxCoord xsrc, wxCoord ysrc,
 267                         int rop = wxCOPY, bool useMask = false, wxCoord xsrcMask = -1, wxCoord ysrcMask = -1);
 268
 269     // this is gnarly - we can't even call this function DoSetClippingRegion()
 270     // because of virtual function hiding
 271     virtual void DoSetClippingRegionAsRegion(const wxRegion& region);
 272     virtual void DoSetClippingRegion(wxCoord x, wxCoord y,
 273                                      wxCoord width, wxCoord height);
 274
 275     virtual void DoGetSizeMM(int* width, int* height) const;
 276
 277     virtual void DoDrawLines(int n, wxPoint points[],
 278                              wxCoord xoffset, wxCoord yoffset);
 279     virtual void DoDrawPolygon(int n, wxPoint points[],
 280                                wxCoord xoffset, wxCoord yoffset,
 281                                int fillStyle = wxODDEVEN_RULE);
 282
 283   protected:
 284     //begin wxmac
 285     // Variables used for scaling
 286     double       m_mm_to_pix_x,m_mm_to_pix_y;
 287     // not yet used
 288     bool         m_needComputeScaleX,m_needComputeScaleY;
 289     // If un-scrolled is non-zero or d.o. changes with scrolling.
 290     // Set using SetInternalDeviceOrigin().
 291     long         m_internalDeviceOriginX,m_internalDeviceOriginY;
 292      // To be set by external classes such as wxScrolledWindow
 293      // using SetDeviceOrigin()
 294     long         m_externalDeviceOriginX,m_externalDeviceOriginY;
 295
 296     // Begin implementation for Mac
 297     public:
 298
 299 #if !wxMAC_USE_CORE_GRAPHICS
 300     WXHBITMAP            m_macMask ;
 301 #endif
 302
 303     // in order to preserve the const inheritance of the virtual functions, we have to
 304     // use mutable variables starting from CWPro 5
 305
 306     void                    MacInstallFont() const ;
 307 #if !wxMAC_USE_CORE_GRAPHICS
 308     void                    MacInstallPen() const ;
 309     void                    MacInstallBrush() const ;
 310 #endif
 311
 312     wxPoint                         m_macLocalOrigin ;
 313     mutable void*                   m_macATSUIStyle ;
 314
 315     WXHDC                           m_macPort ;
 316 #if wxMAC_USE_CORE_GRAPHICS
 317     // CoreGraphics
 318     wxGraphicContext                * m_graphicContext ;
 319     wxPoint                         m_macLocalOriginInPort ;
 320 #else
 321     mutable bool                    m_macFontInstalled ;
 322     mutable bool                    m_macPenInstalled ;
 323     mutable bool                    m_macBrushInstalled ;
 324
 325     WXHRGN                          m_macBoundaryClipRgn ;
 326     WXHRGN                          m_macCurrentClipRgn ;
 327     void                            MacSetupPort( wxMacPortStateHelper* ph ) const ;
 328     void                            MacCleanupPort( wxMacPortStateHelper* ph ) const ;
 329     mutable wxMacPortStateHelper*   m_macCurrentPortStateHelper ;
 330     mutable bool                    m_macFormerAliasState ;
 331     mutable short                   m_macFormerAliasSize ;
 332     mutable bool                    m_macAliasWasEnabled ;
 333     mutable void*                   m_macForegroundPixMap ;
 334     mutable void*                   m_macBackgroundPixMap ;
 335 #endif
 336
 337 #if wxMAC_USE_CORE_GRAPHICS
 338 #endif
 339 };
 340
 341 #endif
 342     // _WX_DC_H_