X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/f43426c1b97fe120b04c9a65d855d6861404ac14..8915141c1e7fdfd5df93b17f0c9bf07d1f171343:/include/wx/graphics.h diff --git a/include/wx/graphics.h b/include/wx/graphics.h old mode 100755 new mode 100644 index 21fc47f1c9..b42c0ad1de --- a/include/wx/graphics.h +++ b/include/wx/graphics.h @@ -12,94 +12,459 @@ #ifndef _WX_GRAPHICS_H_ #define _WX_GRAPHICS_H_ +#include "wx/defs.h" #if wxUSE_GRAPHICS_CONTEXT -// --------------------------------------------------------------------------- -// macros -// --------------------------------------------------------------------------- - #include "wx/geometry.h" -#include "wx/dcclient.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; +class WXDLLIMPEXP_FWD_CORE wxEnhMetaFileDC; +#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 + +// 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 wxGraphicsMatrixData; +class WXDLLIMPEXP_FWD_CORE wxGraphicsPathData; + +class WXDLLIMPEXP_CORE wxGraphicsObject : public wxObject +{ +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() {} +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() {} +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); + // 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) +}; + +extern WXDLLIMPEXP_DATA_CORE(wxGraphicsPath) wxNullGraphicsPath; - DECLARE_NO_COPY_CLASS(wxGraphicsPath) + +// 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; }; -class WXDLLEXPORT wxGraphicsContext +// 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: - wxGraphicsContext() {} - virtual ~wxGraphicsContext() {} - - static wxGraphicsContext* Create( const wxWindowDC& dc) ; + 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: + 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); +#ifdef __WXMSW__ + static wxGraphicsContext * Create( const wxEnhMetaFileDC& dc); +#endif +#endif // wxUSE_PRINTING_ARCHITECTURE + + static wxGraphicsContext* CreateFromNative( void * context ); + + static wxGraphicsContext* CreateFromNativeWindow( void * window ); + + static wxGraphicsContext* Create( wxWindow* window ); + + // 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 ); - // creates a path instance that corresponds to the type of graphics context, ie GDIPlus, cairo, CoreGraphics ... - virtual wxGraphicsPath * CreatePath() = 0; + // 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; + + // sets the font + virtual wxGraphicsFont CreateFont( const wxFont &font , const wxColour &col = *wxBLACK ) const; + + // create a native bitmap representation + virtual wxGraphicsBitmap CreateBitmap( const wxBitmap &bitmap ) const; + + // 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; // push the current state of the context, ie the transformation matrix on a stack virtual void PushState() = 0; @@ -107,13 +472,55 @@ public: // pops a stored state from the stack virtual void PopState() = 0; - // clips drawings to the region + // clips drawings to the region intersected with the current clipping region virtual void Clip( const wxRegion ®ion ) = 0; + // 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; + + // 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 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); + + // 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 + // transformation : changes the current transformation matrix CTM of the context // - + // translate virtual void Translate( wxDouble dx , wxDouble dy ) = 0; @@ -123,50 +530,64 @@ 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 ); + + void SetPen( const wxPen& 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; + // sets the brush for filling + virtual void SetBrush( const wxGraphicsBrush& brush ); - // 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; + 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; @@ -174,6 +595,8 @@ 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; @@ -181,7 +604,7 @@ public: // // convenience methods // - + // strokes a single line virtual void StrokeLine( wxDouble x1, wxDouble y1, wxDouble x2, wxDouble y2); @@ -192,9 +615,9 @@ 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 @@ -205,152 +628,152 @@ public: // wrappers using wxPoint2DDouble TODO - DECLARE_NO_COPY_CLASS(wxGraphicsContext) -}; + // helper to determine if a 0.5 offset should be applied for the drawing operation + virtual bool ShouldOffset() const { return false; } -class WXDLLEXPORT wxGCDC: public wxDC -{ - DECLARE_DYNAMIC_CLASS(wxGCDC) - DECLARE_NO_COPY_CLASS(wxGCDC) +protected: -public: - wxGCDC(const wxWindowDC& dc); - wxGCDC(); - virtual ~wxGCDC(); + wxGraphicsPen m_pen; + wxGraphicsBrush m_brush; + wxGraphicsFont m_font; + wxAntialiasMode m_antialias; + wxCompositionMode m_composition; - void Init(); +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 - // implement base class pure virtuals - // ---------------------------------- +// +// A graphics figure allows to cache path, pen etc creations, also will be a basis for layering/grouping elements +// - virtual void Clear(); +class WXDLLIMPEXP_CORE wxGraphicsFigure : public wxGraphicsObject +{ +public: + wxGraphicsFigure(wxGraphicsRenderer* renderer); - virtual bool StartDoc( const wxString& WXUNUSED(message) ) { return true; } - virtual void EndDoc(void) {} + virtual ~wxGraphicsFigure(); - virtual void StartPage(void) {} - virtual void EndPage(void) {} + void SetPath( wxGraphicsMatrix* matrix ); - virtual void SetFont(const wxFont& font); - virtual void SetPen(const wxPen& pen); - virtual void SetBrush(const wxBrush& brush); - virtual void SetBackground(const wxBrush& brush); - virtual void SetBackgroundMode(int mode); - virtual void SetPalette(const wxPalette& palette); + void SetMatrix( wxGraphicsPath* path); - virtual void DestroyClippingRegion(); + // draws this object on the context + virtual void Draw( wxGraphicsContext* cg ); - virtual wxCoord GetCharHeight() const; - virtual wxCoord GetCharWidth() const; + // returns the path of this object + wxGraphicsPath* GetPath() { return m_path; } - virtual bool CanDrawBitmap() const; - virtual bool CanGetTextExtent() const; - virtual int GetDepth() const; - virtual wxSize GetPPI() const; + // returns the transformation matrix of this object, may be null if there is no transformation necessary + wxGraphicsMatrix* GetMatrix() { return m_matrix; } - virtual void SetMapMode(int mode); - virtual void SetUserScale(double x, double y); +private: + wxGraphicsMatrix* m_matrix; + wxGraphicsPath* m_path; - virtual void SetLogicalScale(double x, double y); - virtual void SetLogicalOrigin(wxCoord x, wxCoord y); - virtual void SetDeviceOrigin(wxCoord x, wxCoord y); - virtual void SetAxisOrientation(bool xLeftRight, bool yBottomUp); - virtual void SetLogicalFunction(int function); + DECLARE_DYNAMIC_CLASS(wxGraphicsFigure) +}; - virtual void SetTextForeground(const wxColour& colour); - virtual void SetTextBackground(const wxColour& colour); +#endif - virtual void ComputeScaleAndOrigin(); +// +// 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. +// - wxGraphicsContext* GetGraphicContext() { return m_graphicContext; } +class WXDLLIMPEXP_CORE wxGraphicsRenderer : public wxObject +{ +public: + wxGraphicsRenderer() {} -protected: - // the true implementations - virtual bool DoFloodFill(wxCoord x, wxCoord y, const wxColour& col, - int style = wxFLOOD_SURFACE); + virtual ~wxGraphicsRenderer() {} - virtual void DoGradientFillLinear(const wxRect& rect, - const wxColour& initialColour, - const wxColour& destColour, - wxDirection nDirection = wxEAST); + static wxGraphicsRenderer* GetDefaultRenderer(); - virtual void DoGradientFillConcentric(const wxRect& rect, - const wxColour& initialColour, - const wxColour& destColour, - const wxPoint& circleCenter); + static wxGraphicsRenderer* GetCairoRenderer(); + // Context - virtual bool DoGetPixel(wxCoord x, wxCoord y, wxColour *col) const; + 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; +#ifdef __WXMSW__ + virtual wxGraphicsContext * CreateContext( const wxEnhMetaFileDC& dc) = 0; +#endif +#endif // wxUSE_PRINTING_ARCHITECTURE - virtual void DoDrawPoint(wxCoord x, wxCoord y); + virtual wxGraphicsContext * CreateContextFromNativeContext( void * context ) = 0; -#if wxUSE_SPLINES - virtual void DoDrawSpline(wxList *points); -#endif + virtual wxGraphicsContext * CreateContextFromNativeWindow( void * window ) = 0; - virtual void DoDrawLine(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2); + virtual wxGraphicsContext * CreateContext( wxWindow* window ) = 0; - virtual void DoDrawArc(wxCoord x1, wxCoord y1, - wxCoord x2, wxCoord y2, - wxCoord xc, wxCoord yc); + // create a context that can be used for measuring texts only, no drawing allowed + virtual wxGraphicsContext * CreateMeasuringContext() = 0; - virtual void DoDrawCheckMark(wxCoord x, wxCoord y, - wxCoord width, wxCoord height); + // Path - virtual void DoDrawEllipticArc(wxCoord x, wxCoord y, wxCoord w, wxCoord h, - double sa, double ea); + virtual wxGraphicsPath CreatePath() = 0; - virtual void DoDrawRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height); - virtual void DoDrawRoundedRectangle(wxCoord x, wxCoord y, - wxCoord width, wxCoord height, - double radius); - virtual void DoDrawEllipse(wxCoord x, wxCoord y, wxCoord width, wxCoord height); + // Matrix - virtual void DoCrossHair(wxCoord x, wxCoord y); + 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; - virtual void DoDrawIcon(const wxIcon& icon, wxCoord x, wxCoord y); - virtual void DoDrawBitmap(const wxBitmap &bmp, wxCoord x, wxCoord y, - bool useMask = false); + // Paints - virtual void DoDrawText(const wxString& text, wxCoord x, wxCoord y); - virtual void DoDrawRotatedText(const wxString& text, wxCoord x, wxCoord y, - double angle); + virtual wxGraphicsPen CreatePen(const wxPen& pen) = 0; - virtual bool DoBlit(wxCoord xdest, wxCoord ydest, wxCoord width, wxCoord height, - wxDC *source, wxCoord xsrc, wxCoord ysrc, - int rop = wxCOPY, bool useMask = false, wxCoord xsrcMask = -1, wxCoord ysrcMask = -1); + virtual wxGraphicsBrush CreateBrush(const wxBrush& brush ) = 0; - virtual void DoGetSize(int *,int *) const; - virtual void DoGetSizeMM(int* width, int* height) const; + // 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 void DoDrawLines(int n, wxPoint points[], - wxCoord xoffset, wxCoord yoffset); - virtual void DoDrawPolygon(int n, wxPoint points[], - wxCoord xoffset, wxCoord yoffset, - int fillStyle = wxODDEVEN_RULE); - virtual void DoDrawPolyPolygon(int n, int count[], wxPoint points[], - wxCoord xoffset, wxCoord yoffset, - int fillStyle); + virtual wxGraphicsBrush + CreateRadialGradientBrush(wxDouble xo, wxDouble yo, + wxDouble xc, wxDouble yc, + wxDouble radius, + const wxGraphicsGradientStops& stops) = 0; - virtual void DoSetClippingRegionAsRegion(const wxRegion& region); - virtual void DoSetClippingRegion(wxCoord x, wxCoord y, - wxCoord width, wxCoord height); + // sets the font + virtual wxGraphicsFont CreateFont( const wxFont &font , const wxColour &col = *wxBLACK ) = 0; - virtual void DoGetTextExtent(const wxString& string, - wxCoord *x, wxCoord *y, - wxCoord *descent = NULL, - wxCoord *externalLeading = NULL, - wxFont *theFont = NULL) const; + // create a native bitmap representation + virtual wxGraphicsBitmap CreateBitmap( const wxBitmap &bitmap ) = 0; - virtual bool DoGetPartialTextExtents(const wxString& text, wxArrayInt& widths) const; + // create a graphics bitmap from a native bitmap + virtual wxGraphicsBitmap CreateBitmapFromNativeBitmap( void* bitmap ) = 0; -protected: - // scaling variables - double m_mm_to_pix_x, m_mm_to_pix_y; + // create a subimage from a native image representation + virtual wxGraphicsBitmap CreateSubBitmap( const wxGraphicsBitmap &bitmap, wxDouble x, wxDouble y, wxDouble w, wxDouble h ) = 0; - wxGraphicsContext* m_graphicContext; +private: + wxDECLARE_NO_COPY_CLASS(wxGraphicsRenderer); + DECLARE_ABSTRACT_CLASS(wxGraphicsRenderer) }; -#endif #endif - // _WX_GRID_H_BASE_ + +#endif // _WX_GRAPHICS_H_