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     // draws a an arc to two tangents connecting (current) to (x1,y1) and (x1,y1) to (x2,y2), also a straight line from (current) to (x1,y1)
  55     virtual void AddArcToPoint( wxCoord x1, wxCoord y1 , wxCoord x2, wxCoord y2, wxCoord r ) = 0 ;
  56
  57     virtual void AddArc( wxCoord x, wxCoord y, wxCoord r, double startAngle, double endAngle, bool clockwise ) = 0 ;
  58
  59     virtual void CloseSubpath() = 0;
  60 };
  61
  62 class WXDLLEXPORT wxGraphicContext
  63 {
  64 public:
  65     virtual ~wxGraphicContext() {}
  66
  67     virtual wxGraphicPath * CreatePath() = 0;
  68
  69     virtual void PushState() = 0 ;
  70
  71     virtual void PopState() = 0 ;
  72
  73     virtual void Clip( const wxRegion &region ) = 0;
  74
  75     virtual void SetPen( const wxPen &pen ) = 0;
  76
  77     virtual void SetBrush( const wxBrush &brush ) = 0;
  78
  79     virtual void SetFont( const wxFont &font ) = 0 ;
  80
  81     virtual void SetTextColor( const wxColour &col ) = 0 ;
  82
  83     virtual void StrokePath( const wxGraphicPath *path ) = 0;
  84
  85     virtual void DrawPath( const wxGraphicPath *path, int fillStyle = wxWINDING_RULE ) = 0;
  86
  87     virtual void FillPath( const wxGraphicPath *path, const wxColor &fillColor, int fillStyle = wxWINDING_RULE ) = 0;
  88
  89     virtual void DrawBitmap( const wxBitmap &bmp, wxCoord x, wxCoord y, wxCoord w, wxCoord h ) = 0 ;
  90
  91     virtual void DrawIcon( const wxIcon &icon, wxCoord x, wxCoord y, wxCoord w, wxCoord h ) = 0 ;
  92
  93     virtual void DrawText( const wxString &str, wxCoord x, wxCoord y, double angle ) = 0 ;
  94
  95     virtual void GetTextExtent( const wxString &text, wxCoord *width, wxCoord *height,
  96                             wxCoord *descent, wxCoord *externalLeading ) const  = 0 ;
  97
  98     virtual void GetPartialTextExtents(const wxString& text, wxArrayInt& widths) const = 0 ;
  99
 100     virtual void Translate( wxCoord dx , wxCoord dy ) = 0 ;
 101
 102     virtual void Scale( wxCoord xScale , wxCoord yScale ) = 0 ;
 103 };
 104
 105 class WXDLLEXPORT wxDC: public wxDCBase
 106 {
 107     DECLARE_DYNAMIC_CLASS(wxDC)
 108     DECLARE_NO_COPY_CLASS(wxDC)
 109
 110 public:
 111     wxDC();
 112     virtual ~wxDC();
 113
 114     // implement base class pure virtuals
 115     // ----------------------------------
 116
 117     virtual void Clear();
 118
 119     virtual bool StartDoc( const wxString& WXUNUSED(message) ) { return true; }
 120     virtual void EndDoc(void) {}
 121
 122     virtual void StartPage(void) {}
 123     virtual void EndPage(void) {}
 124
 125     virtual void SetFont(const wxFont& font);
 126     virtual void SetPen(const wxPen& pen);
 127     virtual void SetBrush(const wxBrush& brush);
 128     virtual void SetBackground(const wxBrush& brush);
 129     virtual void SetBackgroundMode(int mode);
 130     virtual void SetPalette(const wxPalette& palette);
 131
 132     virtual void DestroyClippingRegion();
 133
 134     virtual wxCoord GetCharHeight() const;
 135     virtual wxCoord GetCharWidth() const;
 136
 137     virtual bool CanDrawBitmap() const;
 138     virtual bool CanGetTextExtent() const;
 139     virtual int GetDepth() const;
 140     virtual wxSize GetPPI() const;
 141
 142     virtual void SetMapMode(int mode);
 143     virtual void SetUserScale(double x, double y);
 144
 145     virtual void SetLogicalScale(double x, double y);
 146     virtual void SetLogicalOrigin(wxCoord x, wxCoord y);
 147     virtual void SetDeviceOrigin(wxCoord x, wxCoord y);
 148     virtual void SetAxisOrientation(bool xLeftRight, bool yBottomUp);
 149     virtual void SetLogicalFunction(int function);
 150
 151     virtual void SetTextForeground(const wxColour& colour);
 152     virtual void SetTextBackground(const wxColour& colour);
 153
 154     virtual void ComputeScaleAndOrigin();
 155
 156 public:
 157     wxCoord XDEV2LOG(wxCoord x) const
 158     {
 159         long new_x = x - m_deviceOriginX;
 160         if (new_x > 0)
 161             return (wxCoord)((double)new_x / m_scaleX + 0.5) * m_signX + m_logicalOriginX;
 162         else
 163             return (wxCoord)((double)new_x / m_scaleX - 0.5) * m_signX + m_logicalOriginX;
 164     }
 165
 166     wxCoord XDEV2LOGREL(wxCoord x) const
 167     {
 168         if (x > 0)
 169             return (wxCoord)((double)x / m_scaleX + 0.5);
 170         else
 171             return (wxCoord)((double)x / m_scaleX - 0.5);
 172     }
 173
 174     wxCoord YDEV2LOG(wxCoord y) const
 175     {
 176         long new_y = y - m_deviceOriginY;
 177         if (new_y > 0)
 178             return (wxCoord)((double)new_y / m_scaleY + 0.5) * m_signY + m_logicalOriginY;
 179         else
 180             return (wxCoord)((double)new_y / m_scaleY - 0.5) * m_signY + m_logicalOriginY;
 181     }
 182
 183     wxCoord YDEV2LOGREL(wxCoord y) const
 184     {
 185         if (y > 0)
 186             return (wxCoord)((double)y / m_scaleY + 0.5);
 187         else
 188             return (wxCoord)((double)y / m_scaleY - 0.5);
 189     }
 190
 191     wxCoord XLOG2DEV(wxCoord x) const
 192     {
 193         long new_x = x - m_logicalOriginX;
 194         if (new_x > 0)
 195             return (wxCoord)((double)new_x * m_scaleX + 0.5) * m_signX + m_deviceOriginX;
 196         else
 197             return (wxCoord)((double)new_x * m_scaleX - 0.5) * m_signX + m_deviceOriginX;
 198     }
 199
 200     wxCoord XLOG2DEVREL(wxCoord x) const
 201     {
 202         if (x > 0)
 203             return (wxCoord)((double)x * m_scaleX + 0.5);
 204         else
 205             return (wxCoord)((double)x * m_scaleX - 0.5);
 206     }
 207
 208     wxCoord YLOG2DEV(wxCoord y) const
 209     {
 210         long new_y = y - m_logicalOriginY;
 211         if (new_y > 0)
 212             return (wxCoord)((double)new_y * m_scaleY + 0.5) * m_signY + m_deviceOriginY;
 213         else
 214             return (wxCoord)((double)new_y * m_scaleY - 0.5) * m_signY + m_deviceOriginY;
 215     }
 216
 217     wxCoord YLOG2DEVREL(wxCoord y) const
 218     {
 219         if (y > 0)
 220             return (wxCoord)((double)y * m_scaleY + 0.5);
 221         else
 222             return (wxCoord)((double)y * m_scaleY - 0.5);
 223     }
 224
 225     wxCoord XLOG2DEVMAC(wxCoord x) const
 226     {
 227         long new_x = x - m_logicalOriginX;
 228         if (new_x > 0)
 229             return (wxCoord)((double)new_x * m_scaleX + 0.5) * m_signX + m_deviceOriginX + m_macLocalOrigin.x;
 230         else
 231             return (wxCoord)((double)new_x * m_scaleX - 0.5) * m_signX + m_deviceOriginX + m_macLocalOrigin.x;
 232     }
 233
 234     wxCoord YLOG2DEVMAC(wxCoord y) const
 235     {
 236         long new_y = y - m_logicalOriginY;
 237         if (new_y > 0)
 238             return (wxCoord)((double)new_y * m_scaleY + 0.5) * m_signY + m_deviceOriginY + m_macLocalOrigin.y;
 239         else
 240             return (wxCoord)((double)new_y * m_scaleY - 0.5) * m_signY + m_deviceOriginY + m_macLocalOrigin.y;
 241     }
 242
 243 #if wxMAC_USE_CORE_GRAPHICS
 244     wxGraphicContext* GetGraphicContext() { return m_graphicContext; }
 245 #else
 246     WXHRGN MacGetCurrentClipRgn() { return m_macCurrentClipRgn; }
 247     static void MacSetupBackgroundForCurrentPort(const wxBrush& background );
 248 #endif
 249
 250 protected:
 251     virtual void DoGetTextExtent(const wxString& string,
 252         wxCoord *x, wxCoord *y,
 253         wxCoord *descent = NULL,
 254         wxCoord *externalLeading = NULL,
 255         wxFont *theFont = NULL) const;
 256
 257     virtual bool DoGetPartialTextExtents(const wxString& text, wxArrayInt& widths) const;
 258
 259     virtual bool DoFloodFill(wxCoord x, wxCoord y, const wxColour& col,
 260                              int style = wxFLOOD_SURFACE);
 261
 262     virtual bool DoGetPixel(wxCoord x, wxCoord y, wxColour *col) const;
 263
 264     virtual void DoDrawPoint(wxCoord x, wxCoord y);
 265
 266 #if wxMAC_USE_CORE_GRAPHICS && wxUSE_SPLINES
 267     virtual void DoDrawSpline(wxList *points);
 268 #endif
 269
 270     virtual void DoDrawLine(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2);
 271
 272     virtual void DoDrawArc(wxCoord x1, wxCoord y1,
 273                            wxCoord x2, wxCoord y2,
 274                            wxCoord xc, wxCoord yc);
 275
 276     virtual void DoDrawEllipticArc(wxCoord x, wxCoord y, wxCoord w, wxCoord h,
 277                                    double sa, double ea);
 278
 279     virtual void DoDrawRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height);
 280     virtual void DoDrawRoundedRectangle(wxCoord x, wxCoord y,
 281                                         wxCoord width, wxCoord height,
 282                                         double radius);
 283     virtual void DoDrawEllipse(wxCoord x, wxCoord y, wxCoord width, wxCoord height);
 284
 285     virtual void DoCrossHair(wxCoord x, wxCoord y);
 286
 287     virtual void DoDrawIcon(const wxIcon& icon, wxCoord x, wxCoord y);
 288     virtual void DoDrawBitmap(const wxBitmap &bmp, wxCoord x, wxCoord y,
 289                               bool useMask = false);
 290
 291     virtual void DoDrawText(const wxString& text, wxCoord x, wxCoord y);
 292     virtual void DoDrawRotatedText(const wxString& text, wxCoord x, wxCoord y,
 293                                    double angle);
 294
 295     virtual bool DoBlit(wxCoord xdest, wxCoord ydest, wxCoord width, wxCoord height,
 296                         wxDC *source, wxCoord xsrc, wxCoord ysrc,
 297                         int rop = wxCOPY, bool useMask = false, wxCoord xsrcMask = -1, wxCoord ysrcMask = -1);
 298
 299     // this is gnarly - we can't even call this function DoSetClippingRegion()
 300     // because of virtual function hiding
 301
 302     virtual void DoSetClippingRegionAsRegion(const wxRegion& region);
 303     virtual void DoSetClippingRegion(wxCoord x, wxCoord y,
 304                                      wxCoord width, wxCoord height);
 305
 306     virtual void DoGetSizeMM(int *width, int *height) const;
 307
 308     virtual void DoDrawLines(int n, wxPoint points[],
 309                              wxCoord xoffset, wxCoord yoffset);
 310     virtual void DoDrawPolygon(int n, wxPoint points[],
 311                                wxCoord xoffset, wxCoord yoffset,
 312                                int fillStyle = wxODDEVEN_RULE);
 313
 314 protected:
 315     // scaling variables
 316     double       m_mm_to_pix_x, m_mm_to_pix_y;
 317
 318      // To be set using SetDeviceOrigin()
 319      // by external classes such as wxScrolledWindow
 320     long         m_externalDeviceOriginX, m_externalDeviceOriginY;
 321
 322 #if !wxMAC_USE_CORE_GRAPHICS
 323     // If un-scrolled is non-zero or d.o. changes with scrolling.
 324     // Set using SetInternalDeviceOrigin().
 325     long         m_internalDeviceOriginX, m_internalDeviceOriginY;
 326
 327     WXHBITMAP            m_macMask;
 328 #endif
 329
 330     // not yet used
 331     bool         m_needComputeScaleX, m_needComputeScaleY;
 332
 333 public:
 334     // implementation
 335     void                    MacInstallFont() const;
 336
 337     // in order to preserve the const inheritance of the virtual functions,
 338     // we have to use mutable variables starting from CWPro 5
 339     wxPoint                         m_macLocalOrigin;
 340     mutable void                   *m_macATSUIStyle;
 341
 342     WXHDC                           m_macPort;
 343
 344 #if wxMAC_USE_CORE_GRAPHICS
 345     wxGraphicContext                *m_graphicContext;
 346     wxPoint                         m_macLocalOriginInPort;
 347 #else
 348     void                            MacInstallPen() const;
 349     void                            MacInstallBrush() const;
 350
 351     void                            MacSetupPort( wxMacPortStateHelper *ph ) const;
 352     void                            MacCleanupPort( wxMacPortStateHelper *ph ) const;
 353
 354     mutable wxMacPortStateHelper   *m_macCurrentPortStateHelper;
 355
 356     mutable bool                    m_macFontInstalled;
 357     mutable bool                    m_macPenInstalled;
 358     mutable bool                    m_macBrushInstalled;
 359
 360     WXHRGN                          m_macBoundaryClipRgn;
 361     WXHRGN                          m_macCurrentClipRgn;
 362     mutable bool                    m_macFormerAliasState;
 363     mutable short                   m_macFormerAliasSize;
 364     mutable bool                    m_macAliasWasEnabled;
 365     mutable void                   *m_macForegroundPixMap;
 366     mutable void                   *m_macBackgroundPixMap;
 367 #endif
 368 };
 369
 370 #endif // _WX_DC_H_