X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/0b7dce5480b8cf7ce4368122744d853f7a684e34..58ce18f2fdadecffb21e27555115af708325cf18:/include/wx/graphics.h diff --git a/include/wx/graphics.h b/include/wx/graphics.h index ede12ad06c..4a2b42c974 100644 --- a/include/wx/graphics.h +++ b/include/wx/graphics.h @@ -18,12 +18,51 @@ #include "wx/geometry.h" #include "wx/dynarray.h" +#include "wx/dc.h" +#include "wx/vector.h" + +enum wxAntialiasMode +{ + wxANTIALIAS_NONE, // should be 0 + wxANTIALIAS_DEFAULT, +}; + +enum wxCompositionMode +{ + // R = Result, S = Source, D = Destination, premultiplied with alpha + // Ra, Sa, Da their alpha components + + // classic Porter-Duff compositions + // http://keithp.com/~keithp/porterduff/p253-porter.pdf + + wxCOMPOSITION_CLEAR, /* R = 0 */ + wxCOMPOSITION_SOURCE, /* R = S */ + wxCOMPOSITION_OVER, /* R = S + D*(1 - Sa) */ + wxCOMPOSITION_IN, /* R = S*Da */ + wxCOMPOSITION_OUT, /* R = S*(1 - Da) */ + wxCOMPOSITION_ATOP, /* R = S*Da + D*(1 - Sa) */ + + wxCOMPOSITION_DEST, /* R = D, essentially a noop */ + wxCOMPOSITION_DEST_OVER, /* R = S*(1 - Da) + D */ + wxCOMPOSITION_DEST_IN, /* R = D*Sa */ + wxCOMPOSITION_DEST_OUT, /* R = D*(1 - Sa) */ + wxCOMPOSITION_DEST_ATOP, /* R = S*(1 - Da) + D*Sa */ + wxCOMPOSITION_XOR, /* R = S*(1 - Da) + D*(1 - Sa) */ + + // mathematical compositions + wxCOMPOSITION_ADD, /* R = S + D */ +}; class WXDLLIMPEXP_FWD_CORE wxWindowDC; class WXDLLIMPEXP_FWD_CORE wxMemoryDC; #if wxUSE_PRINTING_ARCHITECTURE class WXDLLIMPEXP_FWD_CORE wxPrinterDC; #endif +#ifdef __WXMSW__ +#if wxUSE_ENH_METAFILE +class WXDLLIMPEXP_FWD_CORE wxEnhMetaFileDC; +#endif +#endif class WXDLLIMPEXP_FWD_CORE wxGraphicsContext; class WXDLLIMPEXP_FWD_CORE wxGraphicsPath; class WXDLLIMPEXP_FWD_CORE wxGraphicsMatrix; @@ -256,8 +295,8 @@ public: virtual void GetBox(wxDouble *x, wxDouble *y, wxDouble *w, wxDouble *h)const; wxRect2DDouble GetBox()const; - virtual bool Contains( wxDouble x, wxDouble y, int fillStyle = wxODDEVEN_RULE)const; - bool Contains( const wxPoint2DDouble& c, int fillStyle = wxODDEVEN_RULE)const; + virtual bool Contains( wxDouble x, wxDouble y, wxPolygonFillMode fillStyle = wxODDEVEN_RULE)const; + bool Contains( const wxPoint2DDouble& c, wxPolygonFillMode fillStyle = wxODDEVEN_RULE)const; const wxGraphicsPathData* GetPathData() const { return (const wxGraphicsPathData*) GetRefData(); } @@ -271,6 +310,82 @@ private: extern WXDLLIMPEXP_DATA_CORE(wxGraphicsPath) wxNullGraphicsPath; +// Describes a single gradient stop. +class wxGraphicsGradientStop +{ +public: + wxGraphicsGradientStop(wxColour col = wxTransparentColour, + float pos = 0.) + : m_col(col), + m_pos(pos) + { + } + + // default copy ctor, assignment operator and dtor are ok + + const wxColour& GetColour() const { return m_col; } + void SetColour(const wxColour& col) { m_col = col; } + + float GetPosition() const { return m_pos; } + void SetPosition(float pos) + { + wxASSERT_MSG( pos >= 0 && pos <= 1, "invalid gradient stop position" ); + + 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 m_stops; +}; + class WXDLLIMPEXP_CORE wxGraphicsContext : public wxGraphicsObject { public: @@ -282,6 +397,11 @@ public: 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 ); @@ -315,14 +435,29 @@ public: virtual wxGraphicsBrush CreateBrush(const wxBrush& brush ) const; - // sets the brush to a linear gradient, starting at (x1,y1) with color c1 to (x2,y2) with color c2 - virtual wxGraphicsBrush CreateLinearGradientBrush( wxDouble x1, wxDouble y1, wxDouble x2, wxDouble y2, - const wxColour&c1, const wxColour&c2) const; - - // sets the brush to a radial gradient originating at (xo,yc) with color oColor and ends on a circle around (xc,yc) - // with radius r and color cColor - virtual wxGraphicsBrush CreateRadialGradientBrush( wxDouble xo, wxDouble yo, wxDouble xc, wxDouble yc, wxDouble radius, - const wxColour &oColor, const wxColour &cColor) 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; // sets the font virtual wxGraphicsFont CreateFont( const wxFont &font , const wxColour &col = *wxBLACK ) const; @@ -355,11 +490,17 @@ public: // returns the native context virtual void * GetNativeContext() = 0; - // returns the current logical function - virtual int GetLogicalFunction() const { return m_logicalFunction; } + // returns the current shape antialiasing mode + virtual wxAntialiasMode GetAntialiasMode() const { return m_antialias; } - // sets the current logical function, returns true if it supported - virtual bool SetLogicalFunction(int function); + // sets the antialiasing mode, returns true if it supported + virtual bool SetAntialiasMode(wxAntialiasMode antialias) = 0; + + // returns the current compositing operator + virtual wxCompositionMode GetCompositionMode() const { return m_composition; } + + // sets the compositing operator, returns true if it supported + virtual bool SetCompositionMode(wxCompositionMode op) = 0; // returns the size of the graphics context in device coordinates virtual void GetSize( wxDouble* width, wxDouble* height); @@ -374,6 +515,14 @@ public: // returns the alpha on this context virtual wxDouble GetAlpha() const; #endif + + // all rendering is done into a fully transparent temporary context + virtual void BeginLayer(wxDouble opacity) = 0; + + // composites back the drawings into the context with the opacity given at + // the BeginLayer call + virtual void EndLayer() = 0; + // // transformation : changes the current transformation matrix CTM of the context // @@ -419,10 +568,10 @@ public: virtual void StrokePath( const wxGraphicsPath& path ) = 0; // fills a path with the current brush - virtual void FillPath( const wxGraphicsPath& path, int fillStyle = wxODDEVEN_RULE ) = 0; + virtual void FillPath( const wxGraphicsPath& path, wxPolygonFillMode fillStyle = wxODDEVEN_RULE ) = 0; // draws a path by first filling and then stroking - virtual void DrawPath( const wxGraphicsPath& path, int fillStyle = wxODDEVEN_RULE ); + virtual void DrawPath( const wxGraphicsPath& path, wxPolygonFillMode fillStyle = wxODDEVEN_RULE ); // // text @@ -444,7 +593,7 @@ public: virtual void GetTextExtent( const wxString &text, wxDouble *width, wxDouble *height, - wxDouble *descent, wxDouble *externalLeading ) const = 0; + wxDouble *descent = NULL, wxDouble *externalLeading = NULL ) const = 0; virtual void GetPartialTextExtents(const wxString& text, wxArrayDouble& widths) const = 0; @@ -452,9 +601,7 @@ public: // image support // -#ifndef __WXGTK20__ virtual void DrawBitmap( const wxGraphicsBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h ) = 0; -#endif virtual void DrawBitmap( const wxBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h ) = 0; @@ -474,9 +621,9 @@ public: virtual void StrokeLines( size_t n, const wxPoint2DDouble *beginPoints, const wxPoint2DDouble *endPoints); // draws a polygon - virtual void DrawLines( size_t n, const wxPoint2DDouble *points, int fillStyle = wxODDEVEN_RULE ); + virtual void DrawLines( size_t n, const wxPoint2DDouble *points, wxPolygonFillMode fillStyle = wxODDEVEN_RULE ); - // draws a polygon + // draws a rectangle virtual void DrawRectangle( wxDouble x, wxDouble y, wxDouble w, wxDouble h); // draws an ellipse @@ -495,9 +642,10 @@ protected: wxGraphicsPen m_pen; wxGraphicsBrush m_brush; wxGraphicsFont m_font; - int m_logicalFunction; + wxAntialiasMode m_antialias; + wxCompositionMode m_composition; -private: +protected: // implementations of overloaded public functions: we use different names // for them to avoid the virtual function hiding problems in the derived // classes @@ -511,7 +659,7 @@ private: wxDouble angle, const wxGraphicsBrush& backgroundBrush); - DECLARE_NO_COPY_CLASS(wxGraphicsContext) + wxDECLARE_NO_COPY_CLASS(wxGraphicsContext); DECLARE_ABSTRACT_CLASS(wxGraphicsContext) }; @@ -565,12 +713,18 @@ public: static wxGraphicsRenderer* GetDefaultRenderer(); + static wxGraphicsRenderer* GetCairoRenderer(); // Context virtual wxGraphicsContext * CreateContext( const wxWindowDC& dc) = 0; virtual wxGraphicsContext * CreateContext( const wxMemoryDC& dc) = 0; #if wxUSE_PRINTING_ARCHITECTURE virtual wxGraphicsContext * CreateContext( const wxPrinterDC& dc) = 0; +#endif +#ifdef __WXMSW__ +#if wxUSE_ENH_METAFILE + virtual wxGraphicsContext * CreateContext( const wxEnhMetaFileDC& dc) = 0; +#endif #endif virtual wxGraphicsContext * CreateContextFromNativeContext( void * context ) = 0; @@ -597,29 +751,34 @@ public: virtual wxGraphicsBrush CreateBrush(const wxBrush& brush ) = 0; - // sets the brush to a linear gradient, starting at (x1,y1) with color c1 to (x2,y2) with color c2 - virtual wxGraphicsBrush CreateLinearGradientBrush( wxDouble x1, wxDouble y1, wxDouble x2, wxDouble y2, - const wxColour&c1, const wxColour&c2) = 0; + // Gradient brush creation functions may not honour all the stops specified + // stops and use just its boundary colours (this is currently the case + // under OS X) + virtual wxGraphicsBrush + CreateLinearGradientBrush(wxDouble x1, wxDouble y1, + wxDouble x2, wxDouble y2, + const wxGraphicsGradientStops& stops) = 0; - // sets the brush to a radial gradient originating at (xo,yc) with color oColor and ends on a circle around (xc,yc) - // with radius r and color cColor - virtual wxGraphicsBrush CreateRadialGradientBrush( wxDouble xo, wxDouble yo, wxDouble xc, wxDouble yc, wxDouble radius, - const wxColour &oColor, const wxColour &cColor) = 0; + virtual wxGraphicsBrush + CreateRadialGradientBrush(wxDouble xo, wxDouble yo, + wxDouble xc, wxDouble yc, + wxDouble radius, + const wxGraphicsGradientStops& stops) = 0; - // sets the font + // sets the font virtual wxGraphicsFont CreateFont( const wxFont &font , const wxColour &col = *wxBLACK ) = 0; -#ifndef __WXGTK20__ // create a native bitmap representation virtual wxGraphicsBitmap CreateBitmap( const wxBitmap &bitmap ) = 0; + // create a graphics bitmap from a native bitmap + virtual wxGraphicsBitmap CreateBitmapFromNativeBitmap( void* bitmap ) = 0; + // create a subimage from a native image representation virtual wxGraphicsBitmap CreateSubBitmap( const wxGraphicsBitmap &bitmap, wxDouble x, wxDouble y, wxDouble w, wxDouble h ) = 0; -#endif - private: - DECLARE_NO_COPY_CLASS(wxGraphicsRenderer) + wxDECLARE_NO_COPY_CLASS(wxGraphicsRenderer); DECLARE_ABSTRACT_CLASS(wxGraphicsRenderer) };