X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/9bd36c6c0fa19e351d84e5a31062fbb14b6948eb..f2049b683752950d1fe91aec07318e7f2122ff16:/include/wx/graphics.h diff --git a/include/wx/graphics.h b/include/wx/graphics.h index 8d6c126e7b..0d472b5bca 100644 --- a/include/wx/graphics.h +++ b/include/wx/graphics.h @@ -19,6 +19,7 @@ #include "wx/geometry.h" #include "wx/dynarray.h" #include "wx/dc.h" +#include "wx/vector.h" enum wxAntialiasMode { @@ -26,6 +27,20 @@ enum wxAntialiasMode wxANTIALIAS_DEFAULT, }; +enum wxInterpolationQuality +{ + // default interpolation + wxINTERPOLATION_DEFAULT, + // no interpolation + wxINTERPOLATION_NONE, + // fast interpolation, suited for interactivity + wxINTERPOLATION_FAST, + // better quality + wxINTERPOLATION_GOOD, + // best quality, not suited for interactivity + wxINTERPOLATION_BEST +}; + enum wxCompositionMode { // R = Result, S = Source, D = Destination, premultiplied with alpha @@ -34,6 +49,7 @@ enum wxCompositionMode // classic Porter-Duff compositions // http://keithp.com/~keithp/porterduff/p253-porter.pdf + wxCOMPOSITION_INVALID = -1, /* indicates invalid/unsupported mode */ wxCOMPOSITION_CLEAR, /* R = 0 */ wxCOMPOSITION_SOURCE, /* R = S */ wxCOMPOSITION_OVER, /* R = S + D*(1 - Sa) */ @@ -49,7 +65,7 @@ enum wxCompositionMode wxCOMPOSITION_XOR, /* R = S*(1 - Da) + D*(1 - Sa) */ // mathematical compositions - wxCOMPOSITION_ADD, /* R = S + D */ + wxCOMPOSITION_ADD /* R = S + D */ }; class WXDLLIMPEXP_FWD_CORE wxWindowDC; @@ -57,6 +73,11 @@ 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; @@ -304,6 +325,82 @@ 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: @@ -315,6 +412,11 @@ 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 ); @@ -348,14 +450,29 @@ 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; @@ -394,6 +511,12 @@ public: // sets the antialiasing mode, returns true if it supported virtual bool SetAntialiasMode(wxAntialiasMode antialias) = 0; + // returns the current interpolation quality + virtual wxInterpolationQuality GetInterpolationQuality() const { return m_interpolation; } + + // sets the interpolation quality, returns true if it supported + virtual bool SetInterpolationQuality(wxInterpolationQuality interpolation) = 0; + // returns the current compositing operator virtual wxCompositionMode GetCompositionMode() const { return m_composition; } @@ -401,7 +524,13 @@ public: virtual bool SetCompositionMode(wxCompositionMode op) = 0; // returns the size of the graphics context in device coordinates - virtual void GetSize( wxDouble* width, wxDouble* height); + void GetSize(wxDouble* width, wxDouble* height) + { + if ( width ) + *width = m_width; + if ( height ) + *height = m_height; + } // returns the resolution of the graphics context in device points per inch virtual void GetDPI( wxDouble* dpiX, wxDouble* dpiY); @@ -534,14 +663,26 @@ public: // helper to determine if a 0.5 offset should be applied for the drawing operation virtual bool ShouldOffset() const { return false; } - + + // indicates whether the context should try to offset for pixel boundaries, this only makes sense on + // bitmap devices like screen, by default this is turned off + virtual void EnableOffset(bool enable = true); + + void DisableOffset() { EnableOffset(false); } + bool OffsetEnabled() { return m_enableOffset; } + protected: + // These fields must be initialized in the derived class ctors. + wxDouble m_width, + m_height; wxGraphicsPen m_pen; wxGraphicsBrush m_brush; wxGraphicsFont m_font; wxAntialiasMode m_antialias; wxCompositionMode m_composition; + wxInterpolationQuality m_interpolation; + bool m_enableOffset; protected: // implementations of overloaded public functions: we use different names @@ -611,12 +752,18 @@ 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; @@ -643,21 +790,26 @@ 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; // 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;