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 #include "wx/pen.h"
  16 #include "wx/brush.h"
  17 #include "wx/icon.h"
  18 #include "wx/font.h"
  19 #include "wx/gdicmn.h"
  20
  21 //-----------------------------------------------------------------------------
  22 // constants
  23 //-----------------------------------------------------------------------------
  24
  25 #ifndef MM_TEXT
  26 #define MM_TEXT            0
  27 #define MM_ISOTROPIC    1
  28 #define MM_ANISOTROPIC    2
  29 #define MM_LOMETRIC        3
  30 #define MM_HIMETRIC        4
  31 #define MM_TWIPS        5
  32 #define MM_POINTS        6
  33 #define MM_METRIC        7
  34 #endif
  35
  36
  37 class wxMacPortStateHelper;
  38
  39 class WXDLLEXPORT wxGraphicPath
  40 {
  41 public :
  42     virtual ~wxGraphicPath() {}
  43
  44     virtual void MoveToPoint( wxCoord x1, wxCoord y1 ) = 0;
  45
  46     virtual void AddLineToPoint( wxCoord x1, wxCoord y1 ) = 0;
  47
  48     virtual void AddQuadCurveToPoint( wxCoord cx1, wxCoord cy1, wxCoord x1, wxCoord y1 ) = 0;
  49
  50     virtual void AddRectangle( wxCoord x, wxCoord y, wxCoord w, wxCoord h ) = 0;
  51
  52     virtual void AddCircle( wxCoord x, wxCoord y, wxCoord r ) = 0;
  53
  54     virtual void CloseSubpath() = 0;
  55 };
  56
  57 class WXDLLEXPORT wxGraphicContext
  58 {
  59 public:
  60     virtual ~wxGraphicContext() {}
  61
  62     virtual void Clip( const wxRegion &region ) = 0;
  63
  64     virtual void StrokePath( const wxGraphicPath *path ) = 0;
  65
  66     virtual void DrawPath( const wxGraphicPath *path, int fillStyle = wxWINDING_RULE ) = 0;
  67
  68     virtual void FillPath( const wxGraphicPath *path, const wxColor &fillColor, int fillStyle = wxWINDING_RULE ) = 0;
  69
  70     virtual void SetPen( const wxPen &pen ) = 0;
  71
  72     virtual void SetBrush( const wxBrush &brush ) = 0;
  73
  74     virtual wxGraphicPath * CreatePath() = 0;
  75 };
  76
  77 class WXDLLEXPORT wxDC: public wxDCBase
  78 {
  79     DECLARE_DYNAMIC_CLASS(wxDC)
  80     DECLARE_NO_COPY_CLASS(wxDC)
  81
  82 public:
  83     wxDC();
  84     virtual ~wxDC();
  85
  86     // implement base class pure virtuals
  87     // ----------------------------------
  88
  89     virtual void Clear();
  90
  91     virtual bool StartDoc( const wxString& WXUNUSED(message) ) { return true; }
  92     virtual void EndDoc(void) {}
  93
  94     virtual void StartPage(void) {}
  95     virtual void EndPage(void) {}
  96
  97     virtual void SetFont(const wxFont& font);
  98     virtual void SetPen(const wxPen& pen);
  99     virtual void SetBrush(const wxBrush& brush);
 100     virtual void SetBackground(const wxBrush& brush);
 101     virtual void SetBackgroundMode(int mode);
 102     virtual void SetPalette(const wxPalette& palette);
 103
 104     virtual void DestroyClippingRegion();
 105
 106     virtual wxCoord GetCharHeight() const;
 107     virtual wxCoord GetCharWidth() const;
 108
 109     virtual bool CanDrawBitmap() const;
 110     virtual bool CanGetTextExtent() const;
 111     virtual int GetDepth() const;
 112     virtual wxSize GetPPI() const;
 113
 114     virtual void SetMapMode(int mode);
 115     virtual void SetUserScale(double x, double y);
 116
 117     virtual void SetLogicalScale(double x, double y);
 118     virtual void SetLogicalOrigin(wxCoord x, wxCoord y);
 119     virtual void SetDeviceOrigin(wxCoord x, wxCoord y);
 120     virtual void SetAxisOrientation(bool xLeftRight, bool yBottomUp);
 121     virtual void SetLogicalFunction(int function);
 122
 123     virtual void SetTextForeground(const wxColour& colour);
 124     virtual void SetTextBackground(const wxColour& colour);
 125
 126     virtual void ComputeScaleAndOrigin();
 127
 128 public:
 129     wxCoord XDEV2LOG(wxCoord x) const
 130     {
 131         long new_x = x - m_deviceOriginX;
 132         if (new_x > 0)
 133             return (wxCoord)((double)new_x / m_scaleX + 0.5) * m_signX + m_logicalOriginX;
 134         else
 135             return (wxCoord)((double)new_x / m_scaleX - 0.5) * m_signX + m_logicalOriginX;
 136     }
 137
 138     wxCoord XDEV2LOGREL(wxCoord x) const
 139     {
 140         if (x > 0)
 141             return (wxCoord)((double)x / m_scaleX + 0.5);
 142         else
 143             return (wxCoord)((double)x / m_scaleX - 0.5);
 144     }
 145
 146     wxCoord YDEV2LOG(wxCoord y) const
 147     {
 148         long new_y = y - m_deviceOriginY;
 149         if (new_y > 0)
 150             return (wxCoord)((double)new_y / m_scaleY + 0.5) * m_signY + m_logicalOriginY;
 151         else
 152             return (wxCoord)((double)new_y / m_scaleY - 0.5) * m_signY + m_logicalOriginY;
 153     }
 154
 155     wxCoord YDEV2LOGREL(wxCoord y) const
 156     {
 157         if (y > 0)
 158             return (wxCoord)((double)y / m_scaleY + 0.5);
 159         else
 160             return (wxCoord)((double)y / m_scaleY - 0.5);
 161     }
 162
 163     wxCoord XLOG2DEV(wxCoord x) const
 164     {
 165         long new_x = x - m_logicalOriginX;
 166         if (new_x > 0)
 167             return (wxCoord)((double)new_x * m_scaleX + 0.5) * m_signX + m_deviceOriginX;
 168         else
 169             return (wxCoord)((double)new_x * m_scaleX - 0.5) * m_signX + m_deviceOriginX;
 170     }
 171
 172     wxCoord XLOG2DEVREL(wxCoord x) const
 173     {
 174         if (x > 0)
 175             return (wxCoord)((double)x * m_scaleX + 0.5);
 176         else
 177             return (wxCoord)((double)x * m_scaleX - 0.5);
 178     }
 179
 180     wxCoord YLOG2DEV(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;
 185         else
 186             return (wxCoord)((double)new_y * m_scaleY - 0.5) * m_signY + m_deviceOriginY;
 187     }
 188
 189     wxCoord YLOG2DEVREL(wxCoord y) const
 190     {
 191         if (y > 0)
 192             return (wxCoord)((double)y * m_scaleY + 0.5);
 193         else
 194             return (wxCoord)((double)y * m_scaleY - 0.5);
 195     }
 196
 197     wxCoord XLOG2DEVMAC(wxCoord x) const
 198     {
 199         long new_x = x - m_logicalOriginX;
 200         if (new_x > 0)
 201             return (wxCoord)((double)new_x * m_scaleX + 0.5) * m_signX + m_deviceOriginX + m_macLocalOrigin.x;
 202         else
 203             return (wxCoord)((double)new_x * m_scaleX - 0.5) * m_signX + m_deviceOriginX + m_macLocalOrigin.x;
 204     }
 205
 206     wxCoord YLOG2DEVMAC(wxCoord y) const
 207     {
 208         long new_y = y - m_logicalOriginY;
 209         if (new_y > 0)
 210             return (wxCoord)((double)new_y * m_scaleY + 0.5) * m_signY + m_deviceOriginY + m_macLocalOrigin.y;
 211         else
 212             return (wxCoord)((double)new_y * m_scaleY - 0.5) * m_signY + m_deviceOriginY + m_macLocalOrigin.y;
 213     }
 214
 215 #if wxMAC_USE_CORE_GRAPHICS
 216     wxGraphicContext* GetGraphicContext() { return m_graphicContext; }
 217 #else
 218     WXHRGN MacGetCurrentClipRgn() { return m_macCurrentClipRgn; }
 219     static void MacSetupBackgroundForCurrentPort(const wxBrush& background );
 220 #endif
 221
 222 protected:
 223     virtual void DoGetTextExtent(const wxString& string,
 224         wxCoord *x, wxCoord *y,
 225         wxCoord *descent = NULL,
 226         wxCoord *externalLeading = NULL,
 227         wxFont *theFont = NULL) const;
 228
 229     virtual bool DoGetPartialTextExtents(const wxString& text, wxArrayInt& widths) const;
 230
 231     virtual bool DoFloodFill(wxCoord x, wxCoord y, const wxColour& col,
 232                              int style = wxFLOOD_SURFACE);
 233
 234     virtual bool DoGetPixel(wxCoord x, wxCoord y, wxColour *col) const;
 235
 236     virtual void DoDrawPoint(wxCoord x, wxCoord y);
 237
 238 #if wxMAC_USE_CORE_GRAPHICS && wxUSE_SPLINES
 239     virtual void DoDrawSpline(wxList *points);
 240 #endif
 241
 242     virtual void DoDrawLine(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2);
 243
 244     virtual void DoDrawArc(wxCoord x1, wxCoord y1,
 245                            wxCoord x2, wxCoord y2,
 246                            wxCoord xc, wxCoord yc);
 247
 248     virtual void DoDrawEllipticArc(wxCoord x, wxCoord y, wxCoord w, wxCoord h,
 249                                    double sa, double ea);
 250
 251     virtual void DoDrawRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height);
 252     virtual void DoDrawRoundedRectangle(wxCoord x, wxCoord y,
 253                                         wxCoord width, wxCoord height,
 254                                         double radius);
 255     virtual void DoDrawEllipse(wxCoord x, wxCoord y, wxCoord width, wxCoord height);
 256
 257     virtual void DoCrossHair(wxCoord x, wxCoord y);
 258
 259     virtual void DoDrawIcon(const wxIcon& icon, wxCoord x, wxCoord y);
 260     virtual void DoDrawBitmap(const wxBitmap &bmp, wxCoord x, wxCoord y,
 261                               bool useMask = false);
 262
 263     virtual void DoDrawText(const wxString& text, wxCoord x, wxCoord y);
 264     virtual void DoDrawRotatedText(const wxString& text, wxCoord x, wxCoord y,
 265                                    double angle);
 266
 267     virtual bool DoBlit(wxCoord xdest, wxCoord ydest, wxCoord width, wxCoord height,
 268                         wxDC *source, wxCoord xsrc, wxCoord ysrc,
 269                         int rop = wxCOPY, bool useMask = false, wxCoord xsrcMask = -1, wxCoord ysrcMask = -1);
 270
 271     // this is gnarly - we can't even call this function DoSetClippingRegion()
 272     // because of virtual function hiding
 273
 274     virtual void DoSetClippingRegionAsRegion(const wxRegion& region);
 275     virtual void DoSetClippingRegion(wxCoord x, wxCoord y,
 276                                      wxCoord width, wxCoord height);
 277
 278     virtual void DoGetSizeMM(int *width, int *height) const;
 279
 280     virtual void DoDrawLines(int n, wxPoint points[],
 281                              wxCoord xoffset, wxCoord yoffset);
 282     virtual void DoDrawPolygon(int n, wxPoint points[],
 283                                wxCoord xoffset, wxCoord yoffset,
 284                                int fillStyle = wxODDEVEN_RULE);
 285
 286 protected:
 287     // scaling variables
 288     double       m_mm_to_pix_x, m_mm_to_pix_y;
 289
 290      // To be set using SetDeviceOrigin()
 291      // by external classes such as wxScrolledWindow
 292     long         m_externalDeviceOriginX, m_externalDeviceOriginY;
 293
 294 #if !wxMAC_USE_CORE_GRAPHICS
 295     // If un-scrolled is non-zero or d.o. changes with scrolling.
 296     // Set using SetInternalDeviceOrigin().
 297     long         m_internalDeviceOriginX, m_internalDeviceOriginY;
 298
 299     WXHBITMAP            m_macMask;
 300 #endif
 301
 302     // not yet used
 303     bool         m_needComputeScaleX, m_needComputeScaleY;
 304
 305 public:
 306     // implementation
 307     void                    MacInstallFont() const;
 308
 309     // in order to preserve the const inheritance of the virtual functions,
 310     // we have to use mutable variables starting from CWPro 5
 311     wxPoint                         m_macLocalOrigin;
 312     mutable void                   *m_macATSUIStyle;
 313
 314     WXHDC                           m_macPort;
 315
 316 #if wxMAC_USE_CORE_GRAPHICS
 317     wxGraphicContext                *m_graphicContext;
 318     wxPoint                         m_macLocalOriginInPort;
 319 #else
 320     void                            MacInstallPen() const;
 321     void                            MacInstallBrush() const;
 322
 323     void                            MacSetupPort( wxMacPortStateHelper *ph ) const;
 324     void                            MacCleanupPort( wxMacPortStateHelper *ph ) const;
 325
 326     mutable wxMacPortStateHelper   *m_macCurrentPortStateHelper;
 327
 328     mutable bool                    m_macFontInstalled;
 329     mutable bool                    m_macPenInstalled;
 330     mutable bool                    m_macBrushInstalled;
 331
 332     WXHRGN                          m_macBoundaryClipRgn;
 333     WXHRGN                          m_macCurrentClipRgn;
 334     mutable bool                    m_macFormerAliasState;
 335     mutable short                   m_macFormerAliasSize;
 336     mutable bool                    m_macAliasWasEnabled;
 337     mutable void                   *m_macForegroundPixMap;
 338     mutable void                   *m_macBackgroundPixMap;
 339 #endif
 340 };
 341
 342 #endif // _WX_DC_H_