#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/vector.h"
+
+enum wxAntialiasMode
+{
+ wxANTIALIAS_NONE, // should be 0
+ wxANTIALIAS_DEFAULT,
+};
-class WXDLLIMPEXP_CORE wxWindowDC;
-class WXDLLIMPEXP_CORE wxGraphicsContext;
-class WXDLLIMPEXP_CORE wxGraphicsPath;
-class WXDLLIMPEXP_CORE wxGraphicsMatrix;
-class WXDLLIMPEXP_CORE wxGraphicsFigure;
-class WXDLLIMPEXP_CORE wxGraphicsRenderer;
-class WXDLLIMPEXP_CORE wxGraphicsPen;
-class WXDLLIMPEXP_CORE wxGraphicsBrush;
-class WXDLLIMPEXP_CORE wxGraphicsFont;
+enum wxCompositionMode
+{
+ // R = Result, S = Source, D = Destination, premultiplied with alpha
+ // Ra, Sa, Da their alpha components
+
+ // classic Porter-Duff compositions
+ // http://keithp.com/~keithp/porterduff/p253-porter.pdf
+
+ wxCOMPOSITION_CLEAR, /* R = 0 */
+ wxCOMPOSITION_SOURCE, /* R = S */
+ wxCOMPOSITION_OVER, /* R = S + D*(1 - Sa) */
+ wxCOMPOSITION_IN, /* R = S*Da */
+ wxCOMPOSITION_OUT, /* R = S*(1 - Da) */
+ wxCOMPOSITION_ATOP, /* R = S*Da + D*(1 - Sa) */
+
+ wxCOMPOSITION_DEST, /* R = D, essentially a noop */
+ wxCOMPOSITION_DEST_OVER, /* R = S*(1 - Da) + D */
+ wxCOMPOSITION_DEST_IN, /* R = D*Sa */
+ wxCOMPOSITION_DEST_OUT, /* R = D*(1 - Sa) */
+ wxCOMPOSITION_DEST_ATOP, /* R = S*(1 - Da) + D*Sa */
+ wxCOMPOSITION_XOR, /* R = S*(1 - Da) + D*(1 - Sa) */
+
+ // mathematical compositions
+ wxCOMPOSITION_ADD, /* R = S + D */
+};
+
+class WXDLLIMPEXP_FWD_CORE wxWindowDC;
+class WXDLLIMPEXP_FWD_CORE wxMemoryDC;
+#if wxUSE_PRINTING_ARCHITECTURE
+class WXDLLIMPEXP_FWD_CORE wxPrinterDC;
+#endif
+#ifdef __WXMSW__
+#if wxUSE_ENH_METAFILE
+class WXDLLIMPEXP_FWD_CORE wxEnhMetaFileDC;
+#endif
+#endif
+class WXDLLIMPEXP_FWD_CORE wxGraphicsContext;
+class WXDLLIMPEXP_FWD_CORE wxGraphicsPath;
+class WXDLLIMPEXP_FWD_CORE wxGraphicsMatrix;
+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.
*/
-
+
// 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_CORE wxGraphicsObjectRefData : public wxObjectRefData
-{
-public :
- wxGraphicsObjectRefData( wxGraphicsRenderer* renderer );
- wxGraphicsObjectRefData( const wxGraphicsObjectRefData* data );
- wxGraphicsRenderer* GetRenderer() const ;
- virtual wxGraphicsObjectRefData* Clone() const ;
-protected :
- wxGraphicsRenderer* m_renderer;
-} ;
+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);
-} ;
+ DECLARE_DYNAMIC_CLASS(wxGraphicsObject)
+};
class WXDLLIMPEXP_CORE wxGraphicsPen : public wxGraphicsObject
{
-public :
+public:
wxGraphicsPen() {}
virtual ~wxGraphicsPen() {}
-private :
+private:
DECLARE_DYNAMIC_CLASS(wxGraphicsPen)
-} ;
+};
-extern WXDLLEXPORT_DATA(wxGraphicsPen) wxNullGraphicsPen;
+extern WXDLLIMPEXP_DATA_CORE(wxGraphicsPen) wxNullGraphicsPen;
class WXDLLIMPEXP_CORE wxGraphicsBrush : public wxGraphicsObject
{
-public :
+public:
wxGraphicsBrush() {}
virtual ~wxGraphicsBrush() {}
-private :
+private:
DECLARE_DYNAMIC_CLASS(wxGraphicsBrush)
-} ;
+};
-extern WXDLLEXPORT_DATA(wxGraphicsBrush) wxNullGraphicsBrush;
+extern WXDLLIMPEXP_DATA_CORE(wxGraphicsBrush) wxNullGraphicsBrush;
class WXDLLIMPEXP_CORE wxGraphicsFont : public wxGraphicsObject
{
-public :
+public:
wxGraphicsFont() {}
virtual ~wxGraphicsFont() {}
-private :
+private:
DECLARE_DYNAMIC_CLASS(wxGraphicsFont)
-} ;
-
-extern WXDLLEXPORT_DATA(wxGraphicsFont) wxNullGraphicsFont;
+};
+extern WXDLLIMPEXP_DATA_CORE(wxGraphicsFont) wxNullGraphicsFont;
-class WXDLLIMPEXP_CORE wxGraphicsMatrixData : public wxGraphicsObjectRefData
+class WXDLLIMPEXP_CORE wxGraphicsBitmap : public wxGraphicsObject
{
-public :
- wxGraphicsMatrixData( wxGraphicsRenderer* renderer) :
- wxGraphicsObjectRefData(renderer) {}
-
- virtual ~wxGraphicsMatrixData() {}
-
- // concatenates the matrix
- virtual void Concat( const wxGraphicsMatrixData *t ) = 0;
-
- // 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) = 0;
-
- // makes this the inverse matrix
- virtual void Invert() = 0;
-
- // returns true if the elements of the transformation matrix are equal ?
- virtual bool IsEqual( const wxGraphicsMatrixData* t) const = 0;
-
- // return true if this is the identity matrix
- virtual bool IsIdentity() const = 0;
-
- //
- // transformation
- //
-
- // add the translation to this matrix
- virtual void Translate( wxDouble dx , wxDouble dy ) = 0;
-
- // add the scale to this matrix
- virtual void Scale( wxDouble xScale , wxDouble yScale ) = 0;
-
- // add the rotation to this matrix (radians)
- virtual void Rotate( wxDouble angle ) = 0;
-
- //
- // apply the transforms
- //
-
- // applies that matrix to the point
- virtual void TransformPoint( wxDouble *x, wxDouble *y ) const = 0;
-
- // applies the matrix except for translations
- virtual void TransformDistance( wxDouble *dx, wxDouble *dy ) const =0;
+public:
+ wxGraphicsBitmap() {}
+ virtual ~wxGraphicsBitmap() {}
+private:
+ DECLARE_DYNAMIC_CLASS(wxGraphicsBitmap)
+};
- // returns the native representation
- virtual void * GetNativeMatrix() const = 0;
-} ;
+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 WXDLLEXPORT_DATA(wxGraphicsMatrix) wxNullGraphicsMatrix;
-
-class WXDLLIMPEXP_CORE wxGraphicsPathData : public wxGraphicsObjectRefData
-{
-public :
- wxGraphicsPathData(wxGraphicsRenderer* renderer) : wxGraphicsObjectRefData(renderer) {}
- virtual ~wxGraphicsPathData() {}
-
- //
- // 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;
-
- // adds a straight line from the current point to (x,y)
- virtual void AddLineToPoint( wxDouble x, wxDouble y ) = 0;
-
- // 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;
-
- // adds another path
- virtual void AddPath( const wxGraphicsPathData* path ) =0;
-
- // closes the current sub-path
- virtual void CloseSubpath() = 0;
-
- // gets the last point of the current path, (0,0) if not yet set
- virtual void GetCurrentPoint( wxDouble* x, wxDouble* y) const = 0;
-
- // 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;
-
- //
- // 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
- 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 ) ;
-
- // appends an ellipse
- virtual void AddEllipse( wxDouble x, wxDouble y, wxDouble w, wxDouble h);
-
- // appends a rounded rectangle
- virtual void AddRoundedRectangle( wxDouble x, wxDouble y, wxDouble w, wxDouble h, wxDouble radius);
-
- // 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) const= 0;
-
- // transforms each point of this path by the matrix
- virtual void Transform( const wxGraphicsMatrixData* matrix ) =0;
-
- // gets the bounding box enclosing all points (possibly including control points)
- virtual void GetBox(wxDouble *x, wxDouble *y, wxDouble *w, wxDouble *h) const=0;
-
- virtual bool Contains( wxDouble x, wxDouble y, int fillStyle = wxODDEVEN_RULE) const=0;
};
+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
+
+ 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()
+ wxGraphicsPathData* GetPathData()
{ return (wxGraphicsPathData*) GetRefData(); }
-private :
+private:
DECLARE_DYNAMIC_CLASS(wxGraphicsPath)
-} ;
+};
+
+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; }
-extern WXDLLEXPORT_DATA(wxGraphicsPath) wxNullGraphicsPath;
+ 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<wxGraphicsGradientStop> m_stops;
+};
class WXDLLIMPEXP_CORE wxGraphicsContext : public wxGraphicsObject
{
wxGraphicsContext(wxGraphicsRenderer* renderer);
virtual ~wxGraphicsContext();
-
- static wxGraphicsContext* Create( const wxWindowDC& dc) ;
-
- static wxGraphicsContext* CreateFromNative( void * context ) ;
- 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
+#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 );
- 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 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) 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;
+ // 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;
// 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 ;
+ 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
+ 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);
+
+#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;
// 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;
// fills a path with the current brush
- virtual void FillPath( const wxGraphicsPath& path, int fillStyle = wxODDEVEN_RULE ) = 0;
+ virtual void FillPath( const wxGraphicsPath& path, wxPolygonFillMode fillStyle = wxODDEVEN_RULE ) = 0;
// draws a path by first filling and then stroking
- virtual void DrawPath( const wxGraphicsPath& path, int fillStyle = wxODDEVEN_RULE );
-
+ virtual void DrawPath( const wxGraphicsPath& path, wxPolygonFillMode fillStyle = wxODDEVEN_RULE );
+
//
// text
//
-
- 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;
// 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;
//
// convenience methods
//
-
+
// strokes a single line
virtual void StrokeLine( wxDouble x1, wxDouble y1, wxDouble x2, wxDouble y2);
virtual void StrokeLines( size_t n, const wxPoint2DDouble *beginPoints, const wxPoint2DDouble *endPoints);
// draws a polygon
- virtual void DrawLines( size_t n, const wxPoint2DDouble *points, int fillStyle = wxODDEVEN_RULE );
+ virtual void DrawLines( size_t n, const wxPoint2DDouble *points, wxPolygonFillMode fillStyle = wxODDEVEN_RULE );
- // draws a polygon
+ // draws a rectangle
virtual void DrawRectangle( wxDouble x, wxDouble y, wxDouble w, wxDouble h);
// draws an ellipse
// helper to determine if a 0.5 offset should be applied for the drawing operation
virtual bool ShouldOffset() const { return false; }
-
-protected :
+
+ // 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;
-
-private :
- DECLARE_NO_COPY_CLASS(wxGraphicsContext)
+ wxAntialiasMode m_antialias;
+ wxCompositionMode m_composition;
+ 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
+#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() {}
static wxGraphicsRenderer* GetDefaultRenderer();
+ static wxGraphicsRenderer* GetCairoRenderer();
// Context
- virtual wxGraphicsContext * CreateContext( const wxWindowDC& 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;
+#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;
+ // 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,
+
+ 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 ;
-
- // 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;
- // 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 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
+ // sets the font
virtual wxGraphicsFont CreateFont( const wxFont &font , const wxColour &col = *wxBLACK ) = 0;
-
-private :
- DECLARE_NO_COPY_CLASS(wxGraphicsRenderer)
+
+ // create a native bitmap representation
+ virtual wxGraphicsBitmap CreateBitmap( const wxBitmap &bitmap ) = 0;
+
+ // create a graphics bitmap from a native bitmap
+ virtual wxGraphicsBitmap CreateBitmapFromNativeBitmap( void* bitmap ) = 0;
+
+ // create a subimage from a native image representation
+ virtual wxGraphicsBitmap CreateSubBitmap( const wxGraphicsBitmap &bitmap, wxDouble x, wxDouble y, wxDouble w, wxDouble h ) = 0;
+
+private:
+ wxDECLARE_NO_COPY_CLASS(wxGraphicsRenderer);
DECLARE_ABSTRACT_CLASS(wxGraphicsRenderer)
-} ;
+};
#endif
projects / wxWidgets.git / blobdiff