112 lines
3.2 KiB
C
112 lines
3.2 KiB
C
|
/* -*- mode: C++ ; c-file-style: "stroustrup" -*- *****************************
|
||
|
|
* Qwt Widget Library
|
||
|
|
* Copyright (C) 1997 Josef Wilgen
|
||
|
|
* Copyright (C) 2002 Uwe Rathmann
|
||
|
|
*
|
||
|
|
* This library is free software; you can redistribute it and/or
|
||
|
|
* modify it under the terms of the Qwt License, Version 1.0
|
||
|
|
*****************************************************************************/
|
||
|
|
|
||
|
|
#ifndef QWT_PLOT_SHAPE_ITEM_H
|
||
|
|
#define QWT_PLOT_SHAPE_ITEM_H
|
||
|
|
|
||
|
|
#include "qwt_global.h"
|
||
|
|
#include "qwt_plot_item.h"
|
||
|
|
#include <qpainterpath.h>
|
||
|
|
|
||
|
|
/*!
|
||
|
|
\brief A plot item, which displays any graphical shape,
|
||
|
|
that can be defined by a QPainterPath
|
||
|
|
|
||
|
|
A QPainterPath is a shape composed from intersecting and uniting
|
||
|
|
regions, rectangles, ellipses or irregular areas defined by lines, and curves.
|
||
|
|
QwtPlotShapeItem displays a shape with a pen and brush.
|
||
|
|
|
||
|
|
QwtPlotShapeItem offers a couple of optimizations like clipping or weeding.
|
||
|
|
These algorithms need to convert the painter path into polygons that might be
|
||
|
|
less performant for paths built from curves and ellipses.
|
||
|
|
|
||
|
|
\sa QwtPlotZone
|
||
|
|
*/
|
||
|
|
class QWT_EXPORT QwtPlotShapeItem: public QwtPlotItem
|
||
|
|
{
|
||
|
|
public:
|
||
|
|
/*!
|
||
|
|
Attributes to modify the drawing algorithm.
|
||
|
|
The default disables all attributes
|
||
|
|
|
||
|
|
\sa setPaintAttribute(), testPaintAttribute()
|
||
|
|
*/
|
||
|
|
enum PaintAttribute
|
||
|
|
{
|
||
|
|
/*!
|
||
|
|
Clip polygons before painting them. In situations, where points
|
||
|
|
are far outside the visible area (f.e when zooming deep) this
|
||
|
|
might be a substantial improvement for the painting performance
|
||
|
|
|
||
|
|
But polygon clipping will convert the painter path into
|
||
|
|
polygons what might introduce a negative impact on the
|
||
|
|
performance of paths composed from curves or ellipses.
|
||
|
|
*/
|
||
|
|
ClipPolygons = 0x01,
|
||
|
|
};
|
||
|
|
|
||
|
|
//! Paint attributes
|
||
|
|
typedef QFlags<PaintAttribute> PaintAttributes;
|
||
|
|
|
||
|
|
//! Mode how to display the item on the legend
|
||
|
|
enum LegendMode
|
||
|
|
{
|
||
|
|
//! Display a scaled down version of the shape
|
||
|
|
LegendShape,
|
||
|
|
|
||
|
|
//! Display a filled rectangle
|
||
|
|
LegendColor
|
||
|
|
};
|
||
|
|
|
||
|
|
explicit QwtPlotShapeItem( const QString &title = QString::null );
|
||
|
|
explicit QwtPlotShapeItem( const QwtText &title );
|
||
|
|
|
||
|
|
virtual ~QwtPlotShapeItem();
|
||
|
|
|
||
|
|
void setPaintAttribute( PaintAttribute, bool on = true );
|
||
|
|
bool testPaintAttribute( PaintAttribute ) const;
|
||
|
|
|
||
|
|
void setLegendMode( LegendMode );
|
||
|
|
LegendMode legendMode() const;
|
||
|
|
|
||
|
|
void setRect( const QRectF & );
|
||
|
|
void setPolygon( const QPolygonF & );
|
||
|
|
|
||
|
|
void setShape( const QPainterPath & );
|
||
|
|
QPainterPath shape() const;
|
||
|
|
|
||
|
|
void setPen( const QColor &, qreal width = 0.0, Qt::PenStyle = Qt::SolidLine );
|
||
|
|
void setPen( const QPen & );
|
||
|
|
QPen pen() const;
|
||
|
|
|
||
|
|
void setBrush( const QBrush & );
|
||
|
|
QBrush brush() const;
|
||
|
|
|
||
|
|
void setRenderTolerance( double );
|
||
|
|
double renderTolerance() const;
|
||
|
|
|
||
|
|
virtual QRectF boundingRect() const;
|
||
|
|
|
||
|
|
virtual void draw( QPainter *p,
|
||
|
|
const QwtScaleMap &xMap, const QwtScaleMap &yMap,
|
||
|
|
const QRectF &rect ) const;
|
||
|
|
|
||
|
|
virtual QwtGraphic legendIcon( int index, const QSizeF & ) const;
|
||
|
|
|
||
|
|
virtual int rtti() const;
|
||
|
|
|
||
|
|
private:
|
||
|
|
void init();
|
||
|
|
|
||
|
|
class PrivateData;
|
||
|
|
PrivateData *d_data;
|
||
|
|
};
|
||
|
|
|
||
|
|
#endif
|