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