/*
* 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.
*/
-
+
// 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,
+// originating rendering engine, there is no dynamic unloading of a renderer currently allowed,
// these references are not counted
//
// 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 ;
+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 :
+ 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 :
+public:
wxGraphicsPen() {}
virtual ~wxGraphicsPen() {}
-private :
+private:
DECLARE_DYNAMIC_CLASS(wxGraphicsPen)
-} ;
+};
extern WXDLLIMPEXP_DATA_CORE(wxGraphicsPen) wxNullGraphicsPen;
class WXDLLIMPEXP_CORE wxGraphicsBrush : public wxGraphicsObject
{
-public :
+public:
wxGraphicsBrush() {}
virtual ~wxGraphicsBrush() {}
-private :
+private:
DECLARE_DYNAMIC_CLASS(wxGraphicsBrush)
-} ;
+};
extern WXDLLIMPEXP_DATA_CORE(wxGraphicsBrush) wxNullGraphicsBrush;
class WXDLLIMPEXP_CORE wxGraphicsFont : public wxGraphicsObject
{
-public :
+public:
wxGraphicsFont() {}
virtual ~wxGraphicsFont() {}
-private :
+private:
DECLARE_DYNAMIC_CLASS(wxGraphicsFont)
-} ;
+};
extern WXDLLIMPEXP_DATA_CORE(wxGraphicsFont) wxNullGraphicsFont;
class WXDLLIMPEXP_CORE wxGraphicsBitmap : public wxGraphicsObject
{
-public :
+public:
wxGraphicsBitmap() {}
virtual ~wxGraphicsBitmap() {}
-private :
+private:
DECLARE_DYNAMIC_CLASS(wxGraphicsBitmap)
-} ;
-
+};
+
extern WXDLLIMPEXP_DATA_CORE(wxGraphicsBitmap) wxNullGraphicsBitmap;
class WXDLLIMPEXP_CORE wxGraphicsMatrix : public wxGraphicsObject
{
-public :
+public:
wxGraphicsMatrix() {}
virtual ~wxGraphicsMatrix() {}
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,
+ 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();
virtual void Scale( wxDouble xScale , wxDouble yScale );
// add the rotation to this matrix (radians)
- virtual void Rotate( wxDouble angle );
+ virtual void Rotate( wxDouble angle );
//
// apply the transforms
// returns the native representation
virtual void * GetNativeMatrix() const;
- const wxGraphicsMatrixData* GetMatrixData() const
+ const wxGraphicsMatrixData* GetMatrixData() const
{ return (const wxGraphicsMatrixData*) GetRefData(); }
- wxGraphicsMatrixData* GetMatrixData()
+ wxGraphicsMatrixData* GetMatrixData()
{ return (wxGraphicsMatrixData*) GetRefData(); }
-private :
+private:
DECLARE_DYNAMIC_CLASS(wxGraphicsMatrix)
-} ;
+};
extern WXDLLIMPEXP_DATA_CORE(wxGraphicsMatrix) wxNullGraphicsMatrix;
class WXDLLIMPEXP_CORE wxGraphicsPath : public wxGraphicsObject
{
-public :
+public:
wxGraphicsPath() {}
virtual ~wxGraphicsPath() {}
-
+
//
// These are the path primitives from which everything else can be constructed
//
virtual void MoveToPoint( wxDouble x, wxDouble y );
void MoveToPoint( const wxPoint2DDouble& p);
- // adds a straight line from the current point to (x,y)
+ // 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 ) ;
+ 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() ;
+ virtual void CloseSubpath();
// gets the last point of the current path, (0,0) if not yet set
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 ) ;
+ 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 );
// 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 ) ;
-
+ virtual void AddArcToPoint( wxDouble x1, wxDouble y1 , wxDouble x2, wxDouble y2, wxDouble r );
+
// appends an ellipse
virtual void AddEllipse( wxDouble x, wxDouble y, wxDouble w, wxDouble h);
// returns the native path
virtual void * GetNativePath() const;
-
+
// give the native path returned by GetNativePath() back (there might be some deallocations necessary)
virtual void UnGetNativePath(void *p)const;
-
+
// transforms each point of this path by the matrix
virtual void Transform( const wxGraphicsMatrix& matrix );
-
+
// 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, int fillStyle = wxODDEVEN_RULE)const;
bool Contains( const wxPoint2DDouble& c, int fillStyle = wxODDEVEN_RULE)const;
-
- const wxGraphicsPathData* GetPathData() const
+
+ const wxGraphicsPathData* GetPathData() const
{ return (const wxGraphicsPathData*) GetRefData(); }
- wxGraphicsPathData* GetPathData()
+ wxGraphicsPathData* GetPathData()
{ return (wxGraphicsPathData*) GetRefData(); }
-private :
+private:
DECLARE_DYNAMIC_CLASS(wxGraphicsPath)
-} ;
+};
extern WXDLLIMPEXP_DATA_CORE(wxGraphicsPath) wxNullGraphicsPath;
wxGraphicsContext(wxGraphicsRenderer* renderer);
virtual ~wxGraphicsContext();
-
- static wxGraphicsContext* Create( const wxWindowDC& dc) ;
- static wxGraphicsContext * Create( const wxMemoryDC& dc) ;
+
+ static wxGraphicsContext* Create( const wxWindowDC& dc);
+ static wxGraphicsContext * Create( const wxMemoryDC& dc);
#if wxUSE_PRINTING_ARCHITECTURE
- static wxGraphicsContext * Create( const wxPrinterDC& dc) ;
+ static wxGraphicsContext * Create( const wxPrinterDC& dc);
#endif
- static wxGraphicsContext* CreateFromNative( void * context ) ;
+ static wxGraphicsContext* CreateFromNative( void * context );
- static wxGraphicsContext* CreateFromNativeWindow( void * window ) ;
+ static wxGraphicsContext* CreateFromNativeWindow( void * window );
- static wxGraphicsContext* Create( wxWindow* 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 ) ;
-
- // done with that document (relevant only for printing / pdf etc)
+ 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
+ // 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)
+
+ // 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) with color c1 to (x2,y2) with color c2
- virtual wxGraphicsBrush CreateLinearGradientBrush( wxDouble x1, wxDouble y1, wxDouble x2, wxDouble y2,
+ 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)
+ // 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;
// 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,
+ 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;
// 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 ;
+ virtual void ResetClip() = 0;
// returns the native context
virtual void * GetNativeContext() = 0;
// returns the current logical function
virtual int GetLogicalFunction() const { return m_logicalFunction; }
-
+
// sets the current logical function, returns true if it supported
- virtual bool SetLogicalFunction(int function) ;
+ virtual bool SetLogicalFunction(int function);
// 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
//
// transformation : changes the current transformation matrix CTM of the context
//
-
+
// translate
virtual void Translate( wxDouble dx , wxDouble dy ) = 0;
// 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;
//
// setting the paint
//
-
+
// sets the pen
virtual void SetPen( const wxGraphicsPen& pen );
-
+
void SetPen( const wxPen& pen );
// sets the brush for filling
virtual void SetBrush( const wxGraphicsBrush& brush );
-
+
void SetBrush( const wxBrush& brush );
// sets the font
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;
// draws a path by first filling and then stroking
virtual void DrawPath( const wxGraphicsPath& path, int 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); }
- virtual void DrawText( const wxString &str, wxDouble x, wxDouble y, const wxGraphicsBrush& backgroundBrush ) ;
+ void DrawText( const wxString &str, wxDouble x, wxDouble y,
+ wxDouble angle, const wxGraphicsBrush& backgroundBrush )
+ { DoDrawRotatedFilledText(str, x, y, angle, backgroundBrush); }
- virtual void DrawText( const wxString &str, wxDouble x, wxDouble y, wxDouble angle, const wxGraphicsBrush& backgroundBrush );
virtual void GetTextExtent( const wxString &text, wxDouble *width, wxDouble *height,
wxDouble *descent, wxDouble *externalLeading ) const = 0;
//
// convenience methods
//
-
+
// strokes a single line
virtual void StrokeLine( wxDouble x1, wxDouble y1, wxDouble x2, wxDouble y2);
// helper to determine if a 0.5 offset should be applied for the drawing operation
virtual bool ShouldOffset() const { return false; }
-protected :
+protected:
wxGraphicsPen m_pen;
wxGraphicsBrush m_brush;
wxGraphicsFont m_font;
int m_logicalFunction;
-private :
+private:
+ // 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);
+
DECLARE_NO_COPY_CLASS(wxGraphicsContext)
DECLARE_ABSTRACT_CLASS(wxGraphicsContext)
};
-#if 0
+#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() ;
-
+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 :
+
+private:
wxGraphicsMatrix* m_matrix;
wxGraphicsPath* m_path;
-
+
DECLARE_DYNAMIC_CLASS(wxGraphicsFigure)
-} ;
-
-#endif
+};
+
+#endif
//
// The graphics renderer is the instance corresponding to the rendering engine used, eg there is ONE core graphics renderer
class WXDLLIMPEXP_CORE wxGraphicsRenderer : public wxObject
{
-public :
+public:
wxGraphicsRenderer() {}
virtual ~wxGraphicsRenderer() {}
// Context
- virtual wxGraphicsContext * CreateContext( const wxWindowDC& dc) = 0 ;
- virtual wxGraphicsContext * CreateContext( const wxMemoryDC& dc) = 0 ;
+ 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 ;
+ virtual wxGraphicsContext * CreateContext( const wxPrinterDC& dc) = 0;
#endif
virtual wxGraphicsContext * CreateContextFromNativeContext( void * context ) = 0;
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,
+
+ 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 ;
-
+
+ virtual wxGraphicsPen CreatePen(const wxPen& pen) = 0;
+
+ 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,
+ virtual wxGraphicsBrush CreateLinearGradientBrush( wxDouble x1, wxDouble y1, wxDouble x2, wxDouble y2,
const wxColour&c1, const wxColour&c2) = 0;
- // sets the brush to a radial gradient originating at (xo,yc) with color oColor and ends on a circle around (xc,yc)
+ // 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;
// sets the font
virtual wxGraphicsFont CreateFont( const wxFont &font , const wxColour &col = *wxBLACK ) = 0;
-#ifndef __WXGTK20__
+#ifndef __WXGTK20__
// create a native bitmap representation
virtual wxGraphicsBitmap CreateBitmap( const wxBitmap &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 :
+private:
DECLARE_NO_COPY_CLASS(wxGraphicsRenderer)
DECLARE_ABSTRACT_CLASS(wxGraphicsRenderer)
-} ;
+};
#endif
projects / wxWidgets.git / blobdiff