/usr/include/KChart/KChartAbstractAreaWidget.h is in libkchart-dev 2.6.0-2.
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* Copyright (C) 2001-2015 Klaralvdalens Datakonsult AB. All rights reserved.
*
* This file is part of the KD Chart library.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef KCHARTABSTRACTAREAWIDGET_H
#define KCHARTABSTRACTAREAWIDGET_H
#include <QWidget>
#include <QPaintEvent>
#include <QPainter>
#include <QRect>
#include "KChartAbstractAreaBase.h"
namespace KChart {
/**
* @class AbstractAreaWidget KChartAbstractArea.h
* @brief An area in the chart with a background, a frame, etc.
*
* AbstractAreaWidget is the base for all widget classes that have
* a set of background attributes and frame attributes, such as
* KChart::Chart and KChart::Legend.
*/
class KCHART_EXPORT AbstractAreaWidget : public QWidget, public AbstractAreaBase
{
Q_OBJECT
Q_DISABLE_COPY( AbstractAreaWidget )
KCHART_DECLARE_PRIVATE_DERIVED_QWIDGET( AbstractAreaWidget )
public:
explicit AbstractAreaWidget( QWidget* parent = 0 );
/**
* @brief Draws the background and frame, then calls paint().
*
* In most cases there is no need to overwrite this method in a derived
* class, but you would overwrite paint() instead.
* @sa paint
*/
virtual void paintEvent( QPaintEvent* event );
/**
* @brief Draws the background and frame, then calls paint().
*
* In most cases there is no need to overwrite this method in a derived
* class, but you would overwrite paint() instead.
*/
virtual void paintIntoRect( QPainter& painter, const QRect& rect );
/**
* Overwrite this to paint the inner contents of your widget.
*
* @note When overriding this method, please let your widget draw
* itself at the top/left corner of the painter. You should call rect()
* (or width(), height(), resp.) to find the drawable area's size:
* While the paint() method is being executed the frame of the widget
* is outside of its rect(), so you can use all of rect() for
* your custom drawing!
* @sa paint, paintIntoRect
*/
virtual void paint( QPainter* painter ) = 0;
/**
* Call paintAll, if you want the background and the frame to be drawn
* before the normal paint() is invoked automatically.
*/
void paintAll( QPainter& painter );
/**
* Call this to trigger an unconditional re-building of the widget's internals.
*/
virtual void forceRebuild();
/**
* Call this to trigger an conditional re-building of the widget's internals.
*
* e.g. AbstractAreaWidget call this, before calling layout()->setGeometry()
*/
virtual void needSizeHint();
virtual void resizeLayout( const QSize& );
Q_SIGNALS:
void positionChanged( AbstractAreaWidget * );
protected:
virtual ~AbstractAreaWidget() ;
virtual QRect areaGeometry() const;
virtual void positionHasChanged();
};
}
#endif // KCHARTABSTRACTAREAWIDGET_H
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