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/*
* python-qwt. Python wrapper for the Qwt Widget Library
* Copyright (C) 1997 Josef Wilgen
* Copyright (C) 2002 Uwe Rathmann
* Copyright (C) 2015 Gudjon I. Gudjonsson
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the Qwt License, Version 1.0
*****************************************************************************/
class QwtSymbol
{
%TypeHeaderCode
#include <qwt_symbol.h>
%End
public:
enum Style
{
//! No Style. The symbol cannot be drawn.
NoSymbol = -1,
//! Ellipse or circle
Ellipse,
//! Rectangle
Rect,
//! Diamond
Diamond,
//! Triangle pointing upwards
Triangle,
//! Triangle pointing downwards
DTriangle,
//! Triangle pointing upwards
UTriangle,
//! Triangle pointing left
LTriangle,
//! Triangle pointing right
RTriangle,
//! Cross (+)
Cross,
//! Diagonal cross (X)
XCross,
//! Horizontal line
HLine,
//! Vertical line
VLine,
//! X combined with +
Star1,
//! Six-pointed star
Star2,
//! Hexagon
Hexagon,
/*!
The symbol is represented by a painter path, where the
origin ( 0, 0 ) of the path coordinate system is mapped to
the position of the symbol.
\sa setPath(), path()
*/
Path,
/*!
The symbol is represented by a pixmap. The pixmap is centered
or aligned to its pin point.
\sa setPinPoint()
*/
Pixmap,
/*!
The symbol is represented by a graphic. The graphic is centered
or aligned to its pin point.
\sa setPinPoint()
*/
Graphic,
/*!
The symbol is represented by a SVG graphic. The graphic is centered
or aligned to its pin point.
\sa setPinPoint()
*/
SvgDocument,
/*!
Styles >= QwtSymbol::UserSymbol are reserved for derived
classes of QwtSymbol that overload drawSymbols() with
additional application specific symbol types.
*/
UserStyle = 1000
};
/*!
Depending on the render engine and the complexity of the
symbol shape it might be faster to render the symbol
to a pixmap and to paint this pixmap.
F.e. the raster paint engine is a pure software renderer
where in cache mode a draw operation usually ends in
raster operation with the the backing store, that are usually
faster, than the algorithms for rendering polygons.
But the opposite can be expected for graphic pipelines
that can make use of hardware acceleration.
The default setting is AutoCache
\sa setCachePolicy(), cachePolicy()
\note The policy has no effect, when the symbol is painted
to a vector graphics format ( PDF, SVG ).
\warning Since Qt 4.8 raster is the default backend on X11
*/
enum CachePolicy
{
//! Don't use a pixmap cache
NoCache,
//! Always use a pixmap cache
Cache,
/*!
Use a cache when one of the following conditions is true:
- The symbol is rendered with the software
renderer ( QPaintEngine::Raster )
*/
AutoCache
};
public:
QwtSymbol( Style = NoSymbol );
QwtSymbol( Style, const QBrush &, const QPen &, const QSize & );
QwtSymbol( const QPainterPath &, const QBrush &, const QPen & );
virtual ~QwtSymbol();
void setCachePolicy( CachePolicy );
CachePolicy cachePolicy() const;
void setSize( const QSize & );
void setSize( int width, int height = -1 );
const QSize& size() const;
void setPinPoint( const QPointF &pos, bool enable = true );
QPointF pinPoint() const;
void setPinPointEnabled( bool );
bool isPinPointEnabled() const;
virtual void setColor( const QColor & );
void setBrush( const QBrush& b );
const QBrush& brush() const;
void setPen( const QColor &, qreal width = 0.0, Qt::PenStyle = Qt::SolidLine );
void setPen( const QPen & );
const QPen& pen() const;
void setStyle( Style );
Style style() const;
void setPath( const QPainterPath & );
const QPainterPath &path() const;
void setPixmap( const QPixmap & );
const QPixmap &pixmap() const;
//void setGraphic( const QwtGraphic & );
//const QwtGraphic &graphic() const;
/*#ifndef QWT_NO_SVG
void setSvgDocument( const QByteArray & );
#endif*/
void drawSymbol( QPainter *, const QRectF & ) const;
void drawSymbol( QPainter *, const QPointF & ) const;
void drawSymbols( QPainter *, const QPolygonF & ) const;
void drawSymbols( QPainter *,
const QPointF *, int numPoints ) const;
virtual QRect boundingRect() const;
void invalidateCache();
protected:
virtual void renderSymbols( QPainter *,
const QPointF *, int numPoints ) const;
private:
// Disabled copy constructor and operator=
QwtSymbol( const QwtSymbol & );
};
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