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/////////////////////////////////////////////////////////////////////////////
// Name: wx/private/graphics.h
// Purpose: private graphics context header
// Author: Stefan Csomor
// Modified by:
// Created:
// Copyright: (c) Stefan Csomor
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
#ifndef _WX_GRAPHICS_PRIVATE_H_
#define _WX_GRAPHICS_PRIVATE_H_
#if wxUSE_GRAPHICS_CONTEXT
#include "wx/graphics.h"
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_CORE wxGraphicsBitmapData : public wxGraphicsObjectRefData
{
public :
wxGraphicsBitmapData( wxGraphicsRenderer* renderer) :
wxGraphicsObjectRefData(renderer) {}
virtual ~wxGraphicsBitmapData() {}
// returns the native representation
virtual void * GetNativeBitmap() const = 0;
} ;
class WXDLLIMPEXP_CORE wxGraphicsMatrixData : public wxGraphicsObjectRefData
{
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;
// 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 = 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;
// returns the native representation
virtual void * GetNativeMatrix() const = 0;
} ;
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, wxPolygonFillMode fillStyle = wxODDEVEN_RULE) const=0;
};
#endif
#endif // _WX_GRAPHICS_PRIVATE_H_
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