include/wx/motif/dc.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        dc.h
   3 // Purpose:     wxDC class
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     17/09/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart
   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 //-----------------------------------------------------------------------------
  47 // wxDC
  48 //-----------------------------------------------------------------------------
  49
  50 class WXDLLEXPORT wxDC: public wxObject
  51 {
  52   DECLARE_ABSTRACT_CLASS(wxDC)
  53
  54   public:
  55
  56     wxDC(void);
  57     ~wxDC(void);
  58
  59     void BeginDrawing(void) {};
  60     void EndDrawing(void) {};
  61
  62     virtual bool Ok(void) const { return m_ok; };
  63
  64     virtual void FloodFill( long x1, long y1, const wxColour& col, int style=wxFLOOD_SURFACE ) = 0;
  65     inline void FloodFill(const wxPoint& pt, const wxColour& col, int style=wxFLOOD_SURFACE)
  66     {
  67         FloodFill(pt.x, pt.y, col, style);
  68     }
  69
  70     virtual bool GetPixel( long x1, long y1, wxColour *col ) const = 0;
  71     inline bool GetPixel(const wxPoint& pt, wxColour *col) const
  72     {
  73         return GetPixel(pt.x, pt.y, col);
  74     }
  75
  76     virtual void DrawLine( long x1, long y1, long x2, long y2 ) = 0;
  77     inline void DrawLine(const wxPoint& pt1, const wxPoint& pt2)
  78     {
  79         DrawLine(pt1.x, pt1.y, pt2.x, pt2.y);
  80     }
  81
  82     virtual void CrossHair( long x, long y ) = 0;
  83     inline void CrossHair(const wxPoint& pt)
  84     {
  85         CrossHair(pt.x, pt.y);
  86     }
  87
  88     virtual void DrawArc( long x1, long y1, long x2, long y2, long xc, long yc ) = 0;
  89     inline void DrawArc(const wxPoint& pt1, const wxPoint& pt2, const wxPoint& centre)
  90     {
  91         DrawArc(pt1.x, pt1.y, pt2.x, pt2.y, centre.x, centre.y);
  92     }
  93
  94     virtual void DrawEllipticArc( long x, long y, long width, long height, double sa, double ea ) = 0;
  95     virtual void DrawEllipticArc (const wxPoint& pt, const wxSize& sz, double sa, double ea)
  96     {
  97         DrawEllipticArc(pt.x, pt.y, sz.x, sz.y, sa, ea);
  98     }
  99
 100     virtual void DrawPoint( long x, long y ) = 0;
 101     virtual void DrawPoint( wxPoint& point );
 102
 103     virtual void DrawLines( int n, wxPoint points[], long xoffset = 0, long yoffset = 0 ) = 0;
 104     virtual void DrawLines( wxList *points, long xoffset = 0, long yoffset = 0 );
 105     virtual void DrawPolygon( int n, wxPoint points[], long xoffset = 0, long yoffset = 0,
 106                               int fillStyle=wxODDEVEN_RULE ) = 0;
 107     virtual void DrawPolygon( wxList *lines, long xoffset = 0, long yoffset = 0,
 108                               int fillStyle=wxODDEVEN_RULE );
 109
 110     virtual void DrawRectangle( long x, long y, long width, long height ) = 0;
 111     inline void DrawRectangle(const wxPoint& pt, const wxSize& sz)
 112     {
 113         DrawRectangle(pt.x, pt.y, sz.x, sz.y);
 114     }
 115     inline void DrawRectangle(const wxRect& rect)
 116     {
 117         DrawRectangle(rect.x, rect.y, rect.width, rect.height);
 118     }
 119     virtual void DrawRoundedRectangle( long x, long y, long width, long height, double radius = 20.0 ) = 0;
 120     inline void DrawRoundedRectangle(const wxPoint& pt, const wxSize& sz, double radius = 20.0)
 121     {
 122         DrawRoundedRectangle(pt.x, pt.y, sz.x, sz.y, radius);
 123     }
 124     inline void DrawRoundedRectangle(const wxRect& rect, double radius = 20.0)
 125     {
 126         DrawRoundedRectangle(rect.x, rect.y, rect.width, rect.height, radius);
 127     }
 128
 129     virtual void DrawEllipse( long x, long y, long width, long height ) = 0;
 130     inline void DrawEllipse(const wxPoint& pt, const wxSize& sz)
 131     {
 132         DrawEllipse(pt.x, pt.y, sz.x, sz.y);
 133     }
 134     inline void DrawEllipse(const wxRect& rect)
 135     {
 136         DrawEllipse(rect.x, rect.y, rect.width, rect.height);
 137     }
 138
 139     virtual void DrawSpline( long x1, long y1, long x2, long y2, long x3, long y3 );
 140     virtual void DrawSpline( wxList *points ) = 0;
 141     virtual void DrawSpline( int n, wxPoint points[] );
 142
 143     virtual bool CanDrawBitmap(void) const = 0;
 144
 145     virtual void DrawIcon( const wxIcon &icon, long x, long y);
 146     inline void DrawIcon(const wxIcon& icon, const wxPoint& pt)
 147     {
 148         DrawIcon(icon, pt.x, pt.y);
 149     }
 150
 151     // DrawBitmap is not always the same as DrawIcon, especially if bitmaps and
 152     // icons are implemented differently.
 153     virtual void DrawBitmap( const wxBitmap &bmp, long x, long y, bool useMask=FALSE ) ;
 154
 155     virtual bool Blit( long xdest, long ydest, long width, long height,
 156        wxDC *source, long xsrc, long ysrc, int logical_func = wxCOPY, bool useMask=FALSE ) = 0;
 157     inline bool Blit(const wxPoint& destPt, const wxSize& sz,
 158             wxDC *source, const wxPoint& srcPt, int rop = wxCOPY, bool useMask = FALSE)
 159     {
 160         return Blit(destPt.x, destPt.y, sz.x, sz.y, source, srcPt.x, srcPt.y, rop, useMask);
 161     }
 162
 163     virtual void DrawText( const wxString &text, long x, long y, bool use16 = FALSE ) = 0;
 164     inline void DrawText(const wxString& text, const wxPoint& pt, bool use16bit = FALSE)
 165     {
 166         DrawText(text, pt.x, pt.y, use16bit);
 167     }
 168
 169     virtual bool CanGetTextExtent(void) const = 0;
 170     virtual void GetTextExtent( const wxString &string, long *width, long *height,
 171                      long *descent = NULL, long *externalLeading = NULL,
 172                      wxFont *theFont = NULL, bool use16 = FALSE ) = 0;
 173     virtual long GetCharWidth(void) = 0;
 174     virtual long GetCharHeight(void) = 0;
 175
 176     virtual void Clear(void) = 0;
 177
 178     virtual void SetFont( const wxFont &font ) = 0;
 179     virtual wxFont& GetFont(void) const { return (wxFont&) m_font; };
 180
 181     virtual void SetPen( const wxPen &pen ) = 0;
 182     virtual wxPen& GetPen(void) const { return (wxPen&) m_pen; };
 183
 184     virtual void SetBrush( const wxBrush &brush ) = 0;
 185     virtual wxBrush& GetBrush(void) const { return (wxBrush&) m_brush; };
 186
 187     virtual void SetBackground( const wxBrush &brush ) = 0;
 188     virtual wxBrush& GetBackground(void) const { return (wxBrush&) m_backgroundBrush; };
 189
 190     virtual void SetLogicalFunction( int function ) = 0;
 191     virtual int GetLogicalFunction(void) const { return m_logicalFunction; };
 192
 193     virtual void SetTextForeground( const wxColour &col );
 194     virtual void SetTextBackground( const wxColour &col );
 195     virtual wxColour& GetTextBackground(void) const { return (wxColour&)m_textBackgroundColour; };
 196     virtual wxColour& GetTextForeground(void) const { return (wxColour&)m_textForegroundColour; };
 197
 198     virtual void SetBackgroundMode( int mode ) = 0;
 199     virtual int GetBackgroundMode(void) const { return m_backgroundMode; };
 200
 201     virtual void SetPalette( const wxPalette& palette ) = 0;
 202     void SetColourMap( const wxPalette& palette ) { SetPalette(palette); };
 203
 204     // the first two must be overridden and called
 205     virtual void SetClippingRegion( long x, long y, long width, long height );
 206     virtual void DestroyClippingRegion(void);
 207     virtual void GetClippingBox( long *x, long *y, long *width, long *height ) const;
 208
 209     virtual inline long MinX(void) const { return m_minX; }
 210     virtual inline long MaxX(void) const { return m_maxX; }
 211     virtual inline long MinY(void) const { return m_minY; }
 212     virtual inline long MaxY(void) const { return m_maxY; }
 213
 214     // Size in device units
 215     virtual void GetSize( int* width, int* height ) const;
 216     inline wxSize GetSize(void) const { int w, h; GetSize(&w, &h); return wxSize(w, h); }
 217
 218     // Size in millimetres
 219     virtual void GetSizeMM( int* width, int* height ) const;
 220     inline wxSize GetSizeMM(void) const { int w, h; GetSizeMM(&w, &h); return wxSize(w, h); }
 221
 222     // Resolution in pixels per logical inch
 223     wxSize GetPPI(void) const ;
 224
 225     virtual bool StartDoc( const wxString& WXUNUSED(message) ) { return TRUE; };
 226     virtual void EndDoc(void) {};
 227     virtual void StartPage(void) {};
 228     virtual void EndPage(void) {};
 229
 230     virtual void SetMapMode( int mode );
 231     virtual int GetMapMode(void) const { return m_mappingMode; };
 232
 233     virtual void SetUserScale( double x, double y );
 234     virtual void GetUserScale( double *x, double *y );
 235     virtual void SetLogicalScale( double x, double y );
 236     virtual void GetLogicalScale( double *x, double *y );
 237
 238     virtual void SetLogicalOrigin( long x, long y );
 239     virtual void GetLogicalOrigin( long *x, long *y );
 240     virtual void SetDeviceOrigin( long x, long y );
 241     virtual void GetDeviceOrigin( long *x, long *y );
 242     virtual void SetInternalDeviceOrigin( long x, long y );
 243     virtual void GetInternalDeviceOrigin( long *x, long *y );
 244
 245     virtual void SetAxisOrientation( bool xLeftRight, bool yBottomUp );
 246
 247     virtual void SetOptimization( bool optimize ) { m_optimize = optimize; };
 248     virtual bool GetOptimization(void) { return m_optimize; };
 249
 250     virtual long DeviceToLogicalX(long x) const;
 251     virtual long DeviceToLogicalY(long y) const;
 252     virtual long DeviceToLogicalXRel(long x) const;
 253     virtual long DeviceToLogicalYRel(long y) const;
 254     virtual long LogicalToDeviceX(long x) const;
 255     virtual long LogicalToDeviceY(long y) const;
 256     virtual long LogicalToDeviceXRel(long x) const;
 257     virtual long LogicalToDeviceYRel(long y) const;
 258
 259   public:
 260
 261     void CalcBoundingBox( long x, long y );
 262     void ComputeScaleAndOrigin(void);
 263
 264     long XDEV2LOG(long x) const
 265         {
 266           long new_x = x - m_deviceOriginX;
 267           if (new_x > 0)
 268             return (long)((double)(new_x) / m_scaleX + 0.5) * m_signX + m_logicalOriginX;
 269           else
 270             return (long)((double)(new_x) / m_scaleX - 0.5) * m_signX + m_logicalOriginX;
 271         }
 272     long XDEV2LOGREL(long x) const
 273         {
 274           if (x > 0)
 275             return (long)((double)(x) / m_scaleX + 0.5);
 276           else
 277             return (long)((double)(x) / m_scaleX - 0.5);
 278         }
 279     long YDEV2LOG(long y) const
 280         {
 281           long new_y = y - m_deviceOriginY;
 282           if (new_y > 0)
 283             return (long)((double)(new_y) / m_scaleY + 0.5) * m_signY + m_logicalOriginY;
 284           else
 285             return (long)((double)(new_y) / m_scaleY - 0.5) * m_signY + m_logicalOriginY;
 286         }
 287     long YDEV2LOGREL(long y) const
 288         {
 289           if (y > 0)
 290             return (long)((double)(y) / m_scaleY + 0.5);
 291           else
 292             return (long)((double)(y) / m_scaleY - 0.5);
 293         }
 294     long XLOG2DEV(long x) const
 295         {
 296           long new_x = x - m_logicalOriginX;
 297           if (new_x > 0)
 298             return (long)((double)(new_x) * m_scaleX + 0.5) * m_signX + m_deviceOriginX;
 299           else
 300             return (long)((double)(new_x) * m_scaleX - 0.5) * m_signX + m_deviceOriginX;
 301         }
 302     // Without device translation, for backing pixmap purposes
 303     long XLOG2DEV_2(long x) const
 304         {
 305           long new_x = x - m_logicalOriginX;
 306           if (new_x > 0)
 307             return (long)((double)(new_x) * m_scaleX + 0.5) * m_signX;
 308           else
 309             return (long)((double)(new_x) * m_scaleX - 0.5) * m_signX;
 310         }
 311     long XLOG2DEVREL(long x) const
 312         {
 313           if (x > 0)
 314             return (long)((double)(x) * m_scaleX + 0.5);
 315           else
 316             return (long)((double)(x) * m_scaleX - 0.5);
 317         }
 318     long YLOG2DEV(long y) const
 319         {
 320           long new_y = y - m_logicalOriginY;
 321           if (new_y > 0)
 322             return (long)((double)(new_y) * m_scaleY + 0.5) * m_signY + m_deviceOriginY;
 323           else
 324             return (long)((double)(new_y) * m_scaleY - 0.5) * m_signY + m_deviceOriginY;
 325         }
 326     // Without device translation, for backing pixmap purposes
 327     long YLOG2DEV_2(long y) const
 328         {
 329           long new_y = y - m_logicalOriginY;
 330           if (new_y > 0)
 331             return (long)((double)(new_y) * m_scaleY + 0.5) * m_signY;
 332           else
 333             return (long)((double)(new_y) * m_scaleY - 0.5) * m_signY;
 334         }
 335     long YLOG2DEVREL(long y) const
 336         {
 337           if (y > 0)
 338             return (long)((double)(y) * m_scaleY + 0.5);
 339           else
 340             return (long)((double)(y) * m_scaleY - 0.5);
 341         }
 342
 343   public:
 344
 345     bool         m_ok;
 346     bool         m_colour;
 347
 348     // not sure, what these mean
 349     bool         m_clipping;      // Is clipping on right now ?
 350     bool         m_optimize;      // wxMSW only ?
 351     bool         m_isInteractive; // For wxPostScriptDC
 352
 353     wxPen        m_pen;
 354     wxBrush      m_brush;
 355     wxBrush      m_backgroundBrush;
 356     wxColour     m_textForegroundColour;
 357     wxColour     m_textBackgroundColour;
 358     wxFont       m_font;
 359
 360     int          m_logicalFunction;
 361     int          m_backgroundMode;
 362     int          m_textAlignment;    // gone in wxWin 2.0 ?
 363
 364     int          m_mappingMode;
 365
 366     // not sure what for, but what is a mm on a screen you don't know the size of?
 367     double       m_mm_to_pix_x,m_mm_to_pix_y;
 368
 369     long         m_internalDeviceOriginX,m_internalDeviceOriginY;   // If un-scrolled is non-zero or
 370                                                                     // d.o. changes with scrolling.
 371                                                                     // Set using SetInternalDeviceOrigin().
 372
 373     long         m_externalDeviceOriginX,m_externalDeviceOriginY;   // To be set by external classes
 374                                                                     // such as wxScrolledWindow
 375                                                                     // using SetDeviceOrigin()
 376
 377     long         m_deviceOriginX,m_deviceOriginY;                   // Sum of the two above.
 378
 379     long         m_logicalOriginX,m_logicalOriginY;                 // User defined.
 380
 381     double       m_scaleX,m_scaleY;
 382     double       m_logicalScaleX,m_logicalScaleY;
 383     double       m_userScaleX,m_userScaleY;
 384     long         m_signX,m_signY;
 385
 386     bool         m_needComputeScaleX,m_needComputeScaleY;         // not yet used
 387
 388     float        m_scaleFactor;  // wxPSDC wants to have this. Will disappear.
 389
 390     long         m_clipX1,m_clipY1,m_clipX2,m_clipY2;
 391     long         m_minX,m_maxX,m_minY,m_maxY;
 392 };
 393
 394 #endif
 395     // _WX_DC_H_