X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/de3cb39f85200fbb9522e0b3c24870795a7435ea..e10972f6c1436a6dcd5427b4e3913bb0f398e045:/include/wx/graphics.h?ds=sidebyside diff --git a/include/wx/graphics.h b/include/wx/graphics.h old mode 100755 new mode 100644 index 6de106cdfc..656a338d3b --- a/include/wx/graphics.h +++ b/include/wx/graphics.h @@ -12,168 +12,589 @@ #ifndef _WX_GRAPHICS_H_ #define _WX_GRAPHICS_H_ +#include "wx/defs.h" + #if wxUSE_GRAPHICS_CONTEXT #include "wx/geometry.h" #include "wx/dynarray.h" +#include "wx/dc.h" +#include "wx/image.h" +#include "wx/vector.h" + +enum wxAntialiasMode +{ + wxANTIALIAS_NONE, // should be 0 + 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 +}; -class WXDLLEXPORT wxWindowDC; +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_INVALID = -1, /* indicates invalid/unsupported mode */ + 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; +class WXDLLIMPEXP_FWD_CORE wxGraphicsFigure; +class WXDLLIMPEXP_FWD_CORE wxGraphicsRenderer; +class WXDLLIMPEXP_FWD_CORE wxGraphicsPen; +class WXDLLIMPEXP_FWD_CORE wxGraphicsBrush; +class WXDLLIMPEXP_FWD_CORE wxGraphicsFont; +class WXDLLIMPEXP_FWD_CORE wxGraphicsBitmap; /* * notes about the graphics context apis * - * angles : are measured in radians, 0.0 being in direction of positiv x axis, PI/2 being + * angles : are measured in radians, 0.0 being in direction of positiv x axis, PI/2 being * in direction of positive y axis. */ - -class WXDLLEXPORT wxGraphicsPath : public wxObject + +// Base class of all objects used for drawing in the new graphics API, the always point back to their +// originating rendering engine, there is no dynamic unloading of a renderer currently allowed, +// these references are not counted + +// +// The data used by objects like graphics pens etc is ref counted, in order to avoid unnecessary expensive +// duplication. Any operation on a shared instance that results in a modified state, uncouples this +// instance from the other instances that were shared - using copy on write semantics +// + +class WXDLLIMPEXP_FWD_CORE wxGraphicsObjectRefData; +class WXDLLIMPEXP_FWD_CORE wxGraphicsBitmapData; +class WXDLLIMPEXP_FWD_CORE wxGraphicsMatrixData; +class WXDLLIMPEXP_FWD_CORE wxGraphicsPathData; + +class WXDLLIMPEXP_CORE wxGraphicsObject : public wxObject { -public : - wxGraphicsPath() {} - virtual ~wxGraphicsPath() {} +public: + wxGraphicsObject(); + wxGraphicsObject( wxGraphicsRenderer* renderer ); + virtual ~wxGraphicsObject(); + + bool IsNull() const; + + // returns the renderer that was used to create this instance, or NULL if it has not been initialized yet + wxGraphicsRenderer* GetRenderer() const; + wxGraphicsObjectRefData* GetGraphicsData() const; +protected: + virtual wxObjectRefData* CreateRefData() const; + virtual wxObjectRefData* CloneRefData(const wxObjectRefData* data) const; + + DECLARE_DYNAMIC_CLASS(wxGraphicsObject) +}; + +class WXDLLIMPEXP_CORE wxGraphicsPen : public wxGraphicsObject +{ +public: + wxGraphicsPen() {} + virtual ~wxGraphicsPen() {} +private: + DECLARE_DYNAMIC_CLASS(wxGraphicsPen) +}; + +extern WXDLLIMPEXP_DATA_CORE(wxGraphicsPen) wxNullGraphicsPen; + +class WXDLLIMPEXP_CORE wxGraphicsBrush : public wxGraphicsObject +{ +public: + wxGraphicsBrush() {} + virtual ~wxGraphicsBrush() {} +private: + DECLARE_DYNAMIC_CLASS(wxGraphicsBrush) +}; + +extern WXDLLIMPEXP_DATA_CORE(wxGraphicsBrush) wxNullGraphicsBrush; + +class WXDLLIMPEXP_CORE wxGraphicsFont : public wxGraphicsObject +{ +public: + wxGraphicsFont() {} + virtual ~wxGraphicsFont() {} +private: + DECLARE_DYNAMIC_CLASS(wxGraphicsFont) +}; + +extern WXDLLIMPEXP_DATA_CORE(wxGraphicsFont) wxNullGraphicsFont; + +class WXDLLIMPEXP_CORE wxGraphicsBitmap : public wxGraphicsObject +{ +public: + wxGraphicsBitmap() {} + virtual ~wxGraphicsBitmap() {} + + // Convert bitmap to wxImage: this is more efficient than converting to + // wxBitmap first and then to wxImage and also works without X server + // connection under Unix that wxBitmap requires. +#if wxUSE_IMAGE + wxImage ConvertToImage() const; +#endif // wxUSE_IMAGE + void* GetNativeBitmap() const; + + const wxGraphicsBitmapData* GetBitmapData() const + { return (const wxGraphicsBitmapData*) GetRefData(); } + wxGraphicsBitmapData* GetBitmapData() + { return (wxGraphicsBitmapData*) GetRefData(); } + +private: + DECLARE_DYNAMIC_CLASS(wxGraphicsBitmap) +}; + +extern WXDLLIMPEXP_DATA_CORE(wxGraphicsBitmap) wxNullGraphicsBitmap; + +class WXDLLIMPEXP_CORE wxGraphicsMatrix : public wxGraphicsObject +{ +public: + wxGraphicsMatrix() {} + + virtual ~wxGraphicsMatrix() {} + + // concatenates the matrix + virtual void Concat( const wxGraphicsMatrix *t ); + void Concat( const wxGraphicsMatrix &t ) { Concat( &t ); } + + // sets the matrix to the respective values + virtual void Set(wxDouble a=1.0, wxDouble b=0.0, wxDouble c=0.0, wxDouble d=1.0, + wxDouble tx=0.0, wxDouble ty=0.0); + + // gets the component valuess of the matrix + virtual void Get(wxDouble* a=NULL, wxDouble* b=NULL, wxDouble* c=NULL, + wxDouble* d=NULL, wxDouble* tx=NULL, wxDouble* ty=NULL) const; + + // makes this the inverse matrix + virtual void Invert(); + + // returns true if the elements of the transformation matrix are equal ? + virtual bool IsEqual( const wxGraphicsMatrix* t) const; + bool IsEqual( const wxGraphicsMatrix& t) const { return IsEqual( &t ); } + + // return true if this is the identity matrix + virtual bool IsIdentity() const; + + // + // transformation + // + + // add the translation to this matrix + virtual void Translate( wxDouble dx , wxDouble dy ); + + // add the scale to this matrix + virtual void Scale( wxDouble xScale , wxDouble yScale ); + + // add the rotation to this matrix (radians) + virtual void Rotate( wxDouble angle ); + + // + // apply the transforms + // + + // applies that matrix to the point + virtual void TransformPoint( wxDouble *x, wxDouble *y ) const; + + // applies the matrix except for translations + virtual void TransformDistance( wxDouble *dx, wxDouble *dy ) const; + + // returns the native representation + virtual void * GetNativeMatrix() const; + + const wxGraphicsMatrixData* GetMatrixData() const + { return (const wxGraphicsMatrixData*) GetRefData(); } + wxGraphicsMatrixData* GetMatrixData() + { return (wxGraphicsMatrixData*) GetRefData(); } + +private: + DECLARE_DYNAMIC_CLASS(wxGraphicsMatrix) +}; + +extern WXDLLIMPEXP_DATA_CORE(wxGraphicsMatrix) wxNullGraphicsMatrix; + +class WXDLLIMPEXP_CORE wxGraphicsPath : public wxGraphicsObject +{ +public: + wxGraphicsPath() {} + virtual ~wxGraphicsPath() {} + // // These are the path primitives from which everything else can be constructed // // begins a new subpath at (x,y) - virtual void MoveToPoint( wxDouble x, wxDouble y ) = 0; + virtual void MoveToPoint( wxDouble x, wxDouble y ); + void MoveToPoint( const wxPoint2DDouble& p); - // adds a straight line from the current point to (x,y) - virtual void AddLineToPoint( wxDouble x, wxDouble y ) = 0; + // adds a straight line from the current point to (x,y) + virtual void AddLineToPoint( wxDouble x, wxDouble y ); + void AddLineToPoint( const wxPoint2DDouble& p); // adds a cubic Bezier curve from the current point, using two control points and an end point - virtual void AddCurveToPoint( wxDouble cx1, wxDouble cy1, wxDouble cx2, wxDouble cy2, wxDouble x, wxDouble y ) = 0; + virtual void AddCurveToPoint( wxDouble cx1, wxDouble cy1, wxDouble cx2, wxDouble cy2, wxDouble x, wxDouble y ); + void AddCurveToPoint( const wxPoint2DDouble& c1, const wxPoint2DDouble& c2, const wxPoint2DDouble& e); + + // adds another path + virtual void AddPath( const wxGraphicsPath& path ); // closes the current sub-path - virtual void CloseSubpath() = 0; + virtual void CloseSubpath(); // gets the last point of the current path, (0,0) if not yet set - virtual void GetCurrentPoint( wxDouble& x, wxDouble&y) = 0; + virtual void GetCurrentPoint( wxDouble* x, wxDouble* y) const; + wxPoint2DDouble GetCurrentPoint() const; // adds an arc of a circle centering at (x,y) with radius (r) from startAngle to endAngle - virtual void AddArc( wxDouble x, wxDouble y, wxDouble r, wxDouble startAngle, wxDouble endAngle, bool clockwise ) = 0; + virtual void AddArc( wxDouble x, wxDouble y, wxDouble r, wxDouble startAngle, wxDouble endAngle, bool clockwise ); + void AddArc( const wxPoint2DDouble& c, wxDouble r, wxDouble startAngle, wxDouble endAngle, bool clockwise); // - // These are convenience functions which - if not available natively will be assembled + // These are convenience functions which - if not available natively will be assembled // using the primitives from above // // adds a quadratic Bezier curve from the current point, using a control point and an end point virtual void AddQuadCurveToPoint( wxDouble cx, wxDouble cy, wxDouble x, wxDouble y ); - // appends a rectangle as a new closed subpath + // appends a rectangle as a new closed subpath virtual void AddRectangle( wxDouble x, wxDouble y, wxDouble w, wxDouble h ); // appends an ellipsis as a new closed subpath fitting the passed rectangle virtual void AddCircle( wxDouble x, wxDouble y, wxDouble r ); - // 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) - virtual void AddArcToPoint( wxDouble x1, wxDouble y1 , wxDouble x2, wxDouble y2, wxDouble r ) ; + // appends 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) + virtual void AddArcToPoint( wxDouble x1, wxDouble y1 , wxDouble x2, wxDouble y2, wxDouble r ); - // wrappers using wxPoint2DDoubles + // appends an ellipse + virtual void AddEllipse( wxDouble x, wxDouble y, wxDouble w, wxDouble h); - wxPoint2DDouble GetCurrentPoint(); + // appends a rounded rectangle + virtual void AddRoundedRectangle( wxDouble x, wxDouble y, wxDouble w, wxDouble h, wxDouble radius); - void MoveToPoint( const wxPoint2DDouble& p); + // returns the native path + virtual void * GetNativePath() const; - void AddLineToPoint( const wxPoint2DDouble& p); + // give the native path returned by GetNativePath() back (there might be some deallocations necessary) + virtual void UnGetNativePath(void *p)const; - void AddCurveToPoint( const wxPoint2DDouble& c1, const wxPoint2DDouble& c2, const wxPoint2DDouble& e); + // transforms each point of this path by the matrix + virtual void Transform( const wxGraphicsMatrix& matrix ); - void AddArc( const wxPoint2DDouble& c, wxDouble r, wxDouble startAngle, wxDouble endAngle, bool clockwise); - - // returns the native path - virtual void * GetNativePath() const = 0; - - // give the native path returned by GetNativePath() back (there might be some deallocations necessary) - virtual void UnGetNativePath(void *p) = 0; - - DECLARE_NO_COPY_CLASS(wxGraphicsPath) - DECLARE_ABSTRACT_CLASS(wxGraphicsPath) + // gets the bounding box enclosing all points (possibly including control points) + virtual void GetBox(wxDouble *x, wxDouble *y, wxDouble *w, wxDouble *h)const; + wxRect2DDouble GetBox()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(); } + wxGraphicsPathData* GetPathData() + { return (wxGraphicsPathData*) GetRefData(); } + +private: + DECLARE_DYNAMIC_CLASS(wxGraphicsPath) }; -/* -class WXDLLEXPORT wxGraphicsMatrix +extern WXDLLIMPEXP_DATA_CORE(wxGraphicsPath) wxNullGraphicsPath; + + +// Describes a single gradient stop. +class wxGraphicsGradientStop { -public : - wxGraphicsMatrix() {} - - virtual ~wxGraphicsMatrix() {} - - wxGraphicsMatrix* Concat( const wxGraphicsMatrix *t ) const; - - // returns the inverse matrix - wxGraphicsMatrix* Invert() const; - - // returns true if the elements of the transformation matrix are equal ? - bool operator==(const wxGraphicsMatrix& t) const; - - // return true if this is the identity matrix - bool IsIdentity(); - - // - // transformation - // - - // translate - virtual void Translate( wxDouble dx , wxDouble dy ) = 0; +public: + wxGraphicsGradientStop(wxColour col = wxTransparentColour, + float pos = 0.) + : m_col(col), + m_pos(pos) + { + } - // scale - virtual void Scale( wxDouble xScale , wxDouble yScale ) = 0; + // default copy ctor, assignment operator and dtor are ok - // rotate (radians) - virtual void Rotate( wxDouble angle ) = 0; -} ; -*/ + 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 WXDLLEXPORT wxGraphicsContext : public wxObject +class WXDLLIMPEXP_CORE wxGraphicsContext : public wxGraphicsObject { public: - wxGraphicsContext() {} + wxGraphicsContext(wxGraphicsRenderer* renderer); - virtual ~wxGraphicsContext() {} - - static wxGraphicsContext* Create( const wxWindowDC& dc) ; - - static wxGraphicsContext* CreateFromNative( void * context ) ; + virtual ~wxGraphicsContext(); -#ifdef __WXMAC__ - static wxGraphicsContext* CreateFromNativeWindow( void * window ) ; + static wxGraphicsContext* Create( const wxWindowDC& dc); + static wxGraphicsContext * Create( const wxMemoryDC& dc); +#if wxUSE_PRINTING_ARCHITECTURE + static wxGraphicsContext * Create( const wxPrinterDC& dc); #endif - static wxGraphicsContext* Create( wxWindow* window ) ; - - // creates a path instance that corresponds to the type of graphics context, ie GDIPlus, cairo, CoreGraphics ... - virtual wxGraphicsPath * CreatePath() = 0; - - /* - // 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) = 0; - */ - +#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); + } + // push the current state of the context, ie the transformation matrix on a stack virtual void PushState() = 0; // pops a stored state from the stack virtual void PopState() = 0; - // clips drawings to the region, combined to current clipping region + // clips drawings to the region intersected with the current clipping region virtual void Clip( const wxRegion ®ion ) = 0; - // clips drawings to the rect + // clips drawings to the rect intersected with the current clipping region virtual void Clip( wxDouble x, wxDouble y, wxDouble w, wxDouble h ) = 0; - - // resets the clipping to original extent - virtual void ResetClip() = 0 ; - // returns the native context - virtual void * GetNativeContext() = 0; + // resets the clipping to original extent + virtual void ResetClip() = 0; + + // returns the native context + virtual void * GetNativeContext() = 0; + + // returns the current shape antialiasing mode + virtual wxAntialiasMode GetAntialiasMode() const { return m_antialias; } + + // 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; } + + // 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 + void GetSize(wxDouble* width, wxDouble* height) const + { + 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); + +#if 0 + // sets the current alpha on this context + virtual void SetAlpha( wxDouble alpha ); + + // 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 // - + // translate virtual void Translate( wxDouble dx , wxDouble dy ) = 0; @@ -183,50 +604,64 @@ public: // rotate (radians) virtual void Rotate( wxDouble angle ) = 0; + // concatenates this transform with the current transform of this context + virtual void ConcatTransform( const wxGraphicsMatrix& matrix ) = 0; + + // sets the transform of this context + virtual void SetTransform( const wxGraphicsMatrix& matrix ) = 0; + + // gets the matrix of this context + virtual wxGraphicsMatrix GetTransform() const = 0; // // setting the paint // - - // sets the pan - virtual void SetPen( const wxPen &pen ) = 0; - // sets the brush for filling - virtual void SetBrush( const wxBrush &brush ) = 0; + // sets the pen + virtual void SetPen( const wxGraphicsPen& pen ); - // sets the brush to a linear gradient, starting at (x1,y1) with color c1 to (x2,y2) with color c2 - virtual void SetLinearGradientBrush( wxDouble x1, wxDouble y1, wxDouble x2, wxDouble y2, - const wxColour&c1, const wxColour&c2) = 0; + void SetPen( const wxPen& pen ); - // 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 void SetRadialGradientBrush( wxDouble xo, wxDouble yo, wxDouble xc, wxDouble yc, wxDouble radius, - const wxColour &oColor, const wxColour &cColor) = 0; + // sets the brush for filling + virtual void SetBrush( const wxGraphicsBrush& brush ); + + void SetBrush( const wxBrush& brush ); // sets the font - virtual void SetFont( const wxFont &font ) = 0; - - // sets the text color - virtual void SetTextColor( const wxColour &col ) = 0; + virtual void SetFont( const wxGraphicsFont& font ); + + void SetFont( const wxFont& font, const wxColour& colour ); + // strokes along a path with the current pen - virtual void StrokePath( const wxGraphicsPath *path ) = 0; + virtual void StrokePath( const wxGraphicsPath& path ) = 0; // fills a path with the current brush - virtual void FillPath( const wxGraphicsPath *path, int fillStyle = wxWINDING_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 = wxWINDING_RULE ); - + virtual void DrawPath( const wxGraphicsPath& path, wxPolygonFillMode fillStyle = wxODDEVEN_RULE ); + // // text // - - virtual void DrawText( const wxString &str, wxDouble x, wxDouble y ) = 0; - virtual void DrawText( const wxString &str, wxDouble x, wxDouble y, wxDouble angle ); + void DrawText( const wxString &str, wxDouble x, wxDouble y ) + { DoDrawText(str, x, y); } + + void DrawText( const wxString &str, wxDouble x, wxDouble y, wxDouble angle ) + { DoDrawRotatedText(str, x, y, angle); } + + void DrawText( const wxString &str, wxDouble x, wxDouble y, + const wxGraphicsBrush& backgroundBrush ) + { DoDrawFilledText(str, x, y, backgroundBrush); } + + void DrawText( const wxString &str, wxDouble x, wxDouble y, + wxDouble angle, const wxGraphicsBrush& backgroundBrush ) + { DoDrawRotatedFilledText(str, x, y, angle, backgroundBrush); } + 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; @@ -234,6 +669,8 @@ public: // image support // + virtual void DrawBitmap( const wxGraphicsBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h ) = 0; + virtual void DrawBitmap( const wxBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h ) = 0; virtual void DrawIcon( const wxIcon &icon, wxDouble x, wxDouble y, wxDouble w, wxDouble h ) = 0; @@ -241,7 +678,7 @@ public: // // convenience methods // - + // strokes a single line virtual void StrokeLine( wxDouble x1, wxDouble y1, wxDouble x2, wxDouble y2); @@ -252,9 +689,9 @@ 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 = wxWINDING_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 @@ -263,16 +700,190 @@ public: // draws a rounded rectangle virtual void DrawRoundedRectangle( wxDouble x, wxDouble y, wxDouble w, wxDouble h, wxDouble radius); - // wrappers using wxPoint2DDouble TODO + // wrappers using wxPoint2DDouble TODO - // helper to determine if a 0.5 offset should be applied for the drawing operation virtual bool ShouldOffset() const { return false; } - DECLARE_NO_COPY_CLASS(wxGraphicsContext) + // 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 + // for them to avoid the virtual function hiding problems in the derived + // classes + virtual void DoDrawText(const wxString& str, wxDouble x, wxDouble y) = 0; + virtual void DoDrawRotatedText(const wxString& str, wxDouble x, wxDouble y, + wxDouble angle); + virtual void DoDrawFilledText(const wxString& str, wxDouble x, wxDouble y, + const wxGraphicsBrush& backgroundBrush); + virtual void DoDrawRotatedFilledText(const wxString& str, + wxDouble x, wxDouble y, + wxDouble angle, + const wxGraphicsBrush& backgroundBrush); + + wxDECLARE_NO_COPY_CLASS(wxGraphicsContext); DECLARE_ABSTRACT_CLASS(wxGraphicsContext) }; +#if 0 + +// +// A graphics figure allows to cache path, pen etc creations, also will be a basis for layering/grouping elements +// + +class WXDLLIMPEXP_CORE wxGraphicsFigure : public wxGraphicsObject +{ +public: + wxGraphicsFigure(wxGraphicsRenderer* renderer); + + virtual ~wxGraphicsFigure(); + + void SetPath( wxGraphicsMatrix* matrix ); + + void SetMatrix( wxGraphicsPath* path); + + // draws this object on the context + virtual void Draw( wxGraphicsContext* cg ); + + // returns the path of this object + wxGraphicsPath* GetPath() { return m_path; } + + // returns the transformation matrix of this object, may be null if there is no transformation necessary + wxGraphicsMatrix* GetMatrix() { return m_matrix; } + +private: + wxGraphicsMatrix* m_matrix; + wxGraphicsPath* m_path; + + DECLARE_DYNAMIC_CLASS(wxGraphicsFigure) +}; + +#endif + +// +// The graphics renderer is the instance corresponding to the rendering engine used, eg there is ONE core graphics renderer +// instance on OSX. This instance is pointed back to by all objects created by it. Therefore you can create eg additional +// paths at any point from a given matrix etc. +// + +class WXDLLIMPEXP_CORE wxGraphicsRenderer : public wxObject +{ +public: + wxGraphicsRenderer() {} + + virtual ~wxGraphicsRenderer() {} + + 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; + + virtual wxGraphicsContext * CreateContextFromNativeWindow( void * window ) = 0; + + virtual wxGraphicsContext * CreateContext( wxWindow* window ) = 0; + +#if wxUSE_IMAGE + virtual wxGraphicsContext * CreateContextFromImage(wxImage& image) = 0; +#endif // wxUSE_IMAGE + + // create a context that can be used for measuring texts only, no drawing allowed + virtual wxGraphicsContext * CreateMeasuringContext() = 0; + + // Path + + virtual wxGraphicsPath CreatePath() = 0; + + // Matrix + + 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) = 0; + + // Paints + + virtual wxGraphicsPen CreatePen(const wxPen& pen) = 0; + + virtual wxGraphicsBrush CreateBrush(const wxBrush& brush ) = 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; + + virtual wxGraphicsBrush + CreateRadialGradientBrush(wxDouble xo, wxDouble yo, + wxDouble xc, wxDouble yc, + wxDouble radius, + const wxGraphicsGradientStops& stops) = 0; + + // sets the font + virtual wxGraphicsFont CreateFont( const wxFont &font , const wxColour &col = *wxBLACK ) = 0; + virtual wxGraphicsFont CreateFont(double sizeInPixels, + const wxString& facename, + int flags = wxFONTFLAG_DEFAULT, + const wxColour& col = *wxBLACK) = 0; + + // create a native bitmap representation + virtual wxGraphicsBitmap CreateBitmap( const wxBitmap &bitmap ) = 0; +#if wxUSE_IMAGE + virtual wxGraphicsBitmap CreateBitmapFromImage(const wxImage& image) = 0; + virtual wxImage CreateImageFromBitmap(const wxGraphicsBitmap& bmp) = 0; +#endif // wxUSE_IMAGE + + // 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; + +private: + wxDECLARE_NO_COPY_CLASS(wxGraphicsRenderer); + DECLARE_ABSTRACT_CLASS(wxGraphicsRenderer) +}; + + +#if wxUSE_IMAGE +inline +wxImage wxGraphicsBitmap::ConvertToImage() const +{ + wxGraphicsRenderer* renderer = GetRenderer(); + return renderer ? renderer->CreateImageFromBitmap(*this) : wxNullImage; +} +#endif // wxUSE_IMAGE + +#endif // wxUSE_GRAPHICS_CONTEXT #endif // _WX_GRAPHICS_H_