+ m_pos = pos;
+ }
+
+private:
+ // The colour of this gradient band.
+ wxColour m_col;
+
+ // Its starting position: 0 is the beginning and 1 is the end.
+ float m_pos;
+};
+
+// A collection of gradient stops ordered by their positions (from lowest to
+// highest). The first stop (index 0, position 0.0) is always the starting
+// colour and the last one (index GetCount() - 1, position 1.0) is the end
+// colour.
+class WXDLLIMPEXP_CORE wxGraphicsGradientStops
+{
+public:
+ wxGraphicsGradientStops(wxColour startCol = wxTransparentColour,
+ wxColour endCol = wxTransparentColour)
+ {
+ // we can't use Add() here as it relies on having start/end stops as
+ // first/last array elements so do it manually
+ m_stops.push_back(wxGraphicsGradientStop(startCol, 0.f));
+ m_stops.push_back(wxGraphicsGradientStop(endCol, 1.f));
+ }
+
+ // default copy ctor, assignment operator and dtor are ok for this class
+
+
+ // Add a stop in correct order.
+ void Add(const wxGraphicsGradientStop& stop);
+ void Add(wxColour col, float pos) { Add(wxGraphicsGradientStop(col, pos)); }
+
+ // Get the number of stops.
+ unsigned GetCount() const { return m_stops.size(); }
+
+ // Return the stop at the given index (which must be valid).
+ wxGraphicsGradientStop Item(unsigned n) const { return m_stops.at(n); }
+
+ // Get/set start and end colours.
+ void SetStartColour(wxColour col)
+ { m_stops[0].SetColour(col); }
+ wxColour GetStartColour() const
+ { return m_stops[0].GetColour(); }
+ void SetEndColour(wxColour col)
+ { m_stops[m_stops.size() - 1].SetColour(col); }
+ wxColour GetEndColour() const
+ { return m_stops[m_stops.size() - 1].GetColour(); }
+
+private:
+ // All the stops stored in ascending order of positions.
+ wxVector<wxGraphicsGradientStop> m_stops;
+};
+
+class WXDLLIMPEXP_CORE wxGraphicsContext : public wxGraphicsObject
+{
+public:
+ wxGraphicsContext(wxGraphicsRenderer* renderer);
+
+ virtual ~wxGraphicsContext();
+
+ static wxGraphicsContext* Create( const wxWindowDC& dc);
+ static wxGraphicsContext * Create( const wxMemoryDC& dc);
+#if wxUSE_PRINTING_ARCHITECTURE
+ static wxGraphicsContext * Create( const wxPrinterDC& dc);
+#endif
+#ifdef __WXMSW__
+#if wxUSE_ENH_METAFILE
+ static wxGraphicsContext * Create( const wxEnhMetaFileDC& dc);
+#endif
+#endif
+
+ static wxGraphicsContext* CreateFromNative( void * context );
+
+ static wxGraphicsContext* CreateFromNativeWindow( void * window );
+
+ static wxGraphicsContext* Create( wxWindow* window );
+
+#if wxUSE_IMAGE
+ // Create a context for drawing onto a wxImage. The image life time must be
+ // greater than that of the context itself as when the context is destroyed
+ // it will copy its contents to the specified image.
+ static wxGraphicsContext* Create(wxImage& image);
+#endif // wxUSE_IMAGE
+
+ // create a context that can be used for measuring texts only, no drawing allowed
+ static wxGraphicsContext * Create();
+
+ // begin a new document (relevant only for printing / pdf etc) if there is a progress dialog, message will be shown
+ virtual bool StartDoc( const wxString& message );
+
+ // done with that document (relevant only for printing / pdf etc)
+ virtual void EndDoc();
+
+ // opens a new page (relevant only for printing / pdf etc) with the given size in points
+ // (if both are null the default page size will be used)
+ virtual void StartPage( wxDouble width = 0, wxDouble height = 0 );
+
+ // ends the current page (relevant only for printing / pdf etc)
+ virtual void EndPage();
+
+ // make sure that the current content of this context is immediately visible
+ virtual void Flush();
+
+ wxGraphicsPath CreatePath() const;
+
+ virtual wxGraphicsPen CreatePen(const wxPen& pen) const;
+
+ virtual wxGraphicsBrush CreateBrush(const wxBrush& brush ) const;
+
+ // sets the brush to a linear gradient, starting at (x1,y1) and ending at
+ // (x2,y2) with the given boundary colours or the specified stops
+ wxGraphicsBrush
+ CreateLinearGradientBrush(wxDouble x1, wxDouble y1,
+ wxDouble x2, wxDouble y2,
+ const wxColour& c1, const wxColour& c2) const;
+ wxGraphicsBrush
+ CreateLinearGradientBrush(wxDouble x1, wxDouble y1,
+ wxDouble x2, wxDouble y2,
+ const wxGraphicsGradientStops& stops) const;
+
+ // sets the brush to a radial gradient originating at (xo,yc) and ending
+ // on a circle around (xc,yc) with the given radius; the colours may be
+ // specified by just the two extremes or the full array of gradient stops
+ wxGraphicsBrush
+ CreateRadialGradientBrush(wxDouble xo, wxDouble yo,
+ wxDouble xc, wxDouble yc, wxDouble radius,
+ const wxColour& oColor, const wxColour& cColor) const;
+
+ wxGraphicsBrush
+ CreateRadialGradientBrush(wxDouble xo, wxDouble yo,
+ wxDouble xc, wxDouble yc, wxDouble radius,
+ const wxGraphicsGradientStops& stops) const;
+
+ // creates a font
+ virtual wxGraphicsFont CreateFont( const wxFont &font , const wxColour &col = *wxBLACK ) const;
+ virtual wxGraphicsFont CreateFont(double sizeInPixels,
+ const wxString& facename,
+ int flags = wxFONTFLAG_DEFAULT,
+ const wxColour& col = *wxBLACK) const;
+
+ // create a native bitmap representation
+ virtual wxGraphicsBitmap CreateBitmap( const wxBitmap &bitmap ) const;
+#if wxUSE_IMAGE
+ wxGraphicsBitmap CreateBitmapFromImage(const wxImage& image) const;
+#endif // wxUSE_IMAGE
+
+ // create a native bitmap representation
+ virtual wxGraphicsBitmap CreateSubBitmap( const wxGraphicsBitmap &bitmap, wxDouble x, wxDouble y, wxDouble w, wxDouble h ) const;
+
+ // create a 'native' matrix corresponding to these values
+ virtual wxGraphicsMatrix CreateMatrix( wxDouble a=1.0, wxDouble b=0.0, wxDouble c=0.0, wxDouble d=1.0,
+ wxDouble tx=0.0, wxDouble ty=0.0) const;
+
+ wxGraphicsMatrix CreateMatrix( const wxAffineMatrix2DBase& mat ) const
+ {
+ wxMatrix2D mat2D;
+ wxPoint2DDouble tr;
+ mat.Get(&mat2D, &tr);
+
+ return CreateMatrix(mat2D.m_11, mat2D.m_12, mat2D.m_21, mat2D.m_22,
+ tr.m_x, tr.m_y);
+ }
projects / wxWidgets.git / blobdiff