/usr/include/vtkQtChartMouseBox.h is in libvtk5-qt4-dev 5.8.0-17.5.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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Program: Visualization Toolkit
Module: vtkQtChartMouseBox.h
Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
All rights reserved.
See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notice for more information.
=========================================================================*/
/*-------------------------------------------------------------------------
Copyright 2008 Sandia Corporation.
Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation,
the U.S. Government retains certain rights in this software.
-------------------------------------------------------------------------*/
/// \file vtkQtChartMouseBox.h
/// \date March 11, 2008
#ifndef _vtkQtChartMouseBox_h
#define _vtkQtChartMouseBox_h
#include "vtkQtChartExport.h"
#include <QObject>
class QGraphicsView;
class QPoint;
class QPointF;
class QRectF;
/*!
* \class vtkQtChartMouseBox
* \brief
* The vtkQtChartMouseBox class is used to draw a mouse box that
* can be used for zooming or selection.
*
* To use the vtkQtChartMouseBox, code needs to be added to several
* key methods. The drag box interaction starts in the mouse press
* event. The box grows or shrinks in the mouse move event. In the
* mouse release event, the box is finalized and used for its
* intent (zoom, select, etc.).
*
* In the mouse press event, the mouse location needs to be saved.
* The position should be in the mouse box's parent coordinates.
* \code
* void SomeClass::mousePressEvent(QMouseEvent *e)
* {
* this->mouseBox->setStartingPosition(e->pos());
* this->mouseBox->setVisible(true);
* }
* \endcode
*
* In the mouse move event, the drag box needs to be updated. The
* point set in the mouse press event should remain unchanged until
* the mouse release event. If your class watches all mouse move
* events, make sure the box is only updated for drag events.
* \code
* void SomeClass::mouseMoveEvent(QMouseEvent *e)
* {
* this->mouseBox->adjustRectangle(e->pos());
* }
* \endcode
*
* In the mouse release event, the drag box needs to be updated
* with the release location before using it. After using the box,
* it should be hidden.
* \code
* void SomeClass::mouseReleaseEvent(QMouseEvent *e)
* {
* this->mouseBox->adjustRectangle(e->pos());
* ...
* this->mouseBox->setVisible(false);
* }
* \endcode
*/
class VTKQTCHART_EXPORT vtkQtChartMouseBox : public QObject
{
Q_OBJECT
public:
vtkQtChartMouseBox(QGraphicsView *view);
~vtkQtChartMouseBox();
/// \brief
/// Gets whether or not the mouse box is visible.
/// \return
/// True if the mouse box should be painted.
bool isVisible() const {return this->Showing;}
/// \brief
/// Sets whether or not the mouse box is visible.
/// \param visible True if the mouse box should be painted.
void setVisible(bool visible);
/// \brief
/// Gets the mouse box starting position.
/// \return
/// A reference to the mouse box starting position.
const QPointF &getStartingPosition() const;
/// \brief
/// Sets the mouse box starting position.
///
/// The starting position should be set before calling
/// \c adjustRectangle. The starting position and adjustment
/// positions should be in view coordinates.
///
/// \param start The original mouse press location in view coordinates.
/// \sa vtkQtChartMouseBox::adjustRectangle(const QPointF &)
void setStartingPosition(const QPoint &start);
/// \brief
/// Adjusts the boundary of the mouse box.
///
/// The selection or zoom box should contain the original mouse
/// down location and the current mouse location. This method
/// is used to adjust the box based on the current mouse location.
///
/// \param current The current position of the mouse in view coordinates.
void adjustRectangle(const QPoint ¤t);
/// \brief
/// Gets the current mouse box.
/// \return
/// A reference to the mouse box.
const QRectF &getRectangle() const;
signals:
// \brief
// Emitted when the mouse box changes.
// \param area The area to repaint in scene coordinates.
void updateNeeded(const QRectF &area);
private:
QGraphicsView *View; ///< Stores the graphics view.
QPointF *Last; ///< Stores the mouse down location.
QRectF *Box; ///< Stores the mouse box.
bool Showing; ///< True if the mouse box should be painted.
};
#endif
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