mirror of
https://github.com/qgis/QGIS.git
synced 2025-10-04 00:04:03 -04:00
33fc476d89
* require qwt >=6.2 (and fallback to internal 6.3 if system's qwt doesn't suffice) * debian doesn't have qwt for Qt6 and won't have it for trixie
76 lines
1.8 KiB
C++
76 lines
1.8 KiB
C++
/******************************************************************************
|
|
* 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_TEXT_LABEL_H
|
|
#define QWT_PLOT_TEXT_LABEL_H
|
|
|
|
#include "qwt_global.h"
|
|
#include "qwt_plot_item.h"
|
|
|
|
class QwtText;
|
|
|
|
/*!
|
|
\brief A plot item, which displays a text label
|
|
|
|
QwtPlotTextLabel displays a text label aligned to the plot canvas.
|
|
|
|
In opposite to QwtPlotMarker the position of the label is unrelated to
|
|
plot coordinates.
|
|
|
|
As drawing a text is an expensive operation the label is cached
|
|
in a pixmap to speed up replots.
|
|
|
|
\par Example
|
|
The following code shows how to add a title.
|
|
\code
|
|
QwtText title( "Plot Title" );
|
|
title.setRenderFlags( Qt::AlignHCenter | Qt::AlignTop );
|
|
|
|
QFont font;
|
|
font.setBold( true );
|
|
title.setFont( font );
|
|
|
|
QwtPlotTextLabel *titleItem = new QwtPlotTextLabel();
|
|
titleItem->setText( title );
|
|
titleItem->attach( plot );
|
|
\endcode
|
|
|
|
\sa QwtPlotMarker
|
|
*/
|
|
|
|
class QWT_EXPORT QwtPlotTextLabel : public QwtPlotItem
|
|
{
|
|
public:
|
|
QwtPlotTextLabel();
|
|
virtual ~QwtPlotTextLabel();
|
|
|
|
virtual int rtti() const QWT_OVERRIDE;
|
|
|
|
void setText( const QwtText& );
|
|
QwtText text() const;
|
|
|
|
void setMargin( int margin );
|
|
int margin() const;
|
|
|
|
virtual QRectF textRect( const QRectF&, const QSizeF& ) const;
|
|
|
|
protected:
|
|
virtual void draw( QPainter*,
|
|
const QwtScaleMap&, const QwtScaleMap&,
|
|
const QRectF&) const QWT_OVERRIDE;
|
|
|
|
void invalidateCache();
|
|
|
|
private:
|
|
class PrivateData;
|
|
PrivateData* m_data;
|
|
};
|
|
|
|
#endif
|