/usr/include/qgis/qgsscalerangewidget.h is in libqgis-dev 2.18.17+dfsg-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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qgsscalerangewidget.h
--------------------------------------
Date : 25.04.2014
Copyright : (C) 2014 Denis Rouzaud
Email : denis.rouzaud@gmail.com
***************************************************************************
* *
* 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. *
* *
***************************************************************************/
#ifndef QGSSCALERANGEWIDGET_H
#define QGSSCALERANGEWIDGET_H
#include <QGridLayout>
#include <QLabel>
#include "qgscollapsiblegroupbox.h"
#include "qgsmaplayer.h"
#include "qgsmapcanvas.h"
#include "qgsscalewidget.h"
/** \ingroup gui
* \class QgsScaleRangeWidget
*/
class GUI_EXPORT QgsScaleRangeWidget : public QWidget
{
Q_OBJECT
public:
explicit QgsScaleRangeWidget( QWidget *parent = nullptr );
~QgsScaleRangeWidget();
//! set the map canvas which will be used for the current scale buttons
/**
* @brief setMapCanvas set the map canvas which will be used for the current scale buttons
* if not set, the buttons are hidden.
*/
void setMapCanvas( QgsMapCanvas* mapCanvas );
//! return the minimum scale
double minimumScale();
//! return the maximum scale
double maximumScale();
/**
* Returns the minimum scale denominator ( = 1 / maximum scale )
* In case of maximum scale = 0 it will also return 0
*/
double minimumScaleDenom();
/**
* Returns the maximum scale denominator ( = 1 / minimum scale )
* In case of minimum scale = 0 it will also return 0
*/
double maximumScaleDenom();
//! call to reload the project scales and apply them to the 2 scales combo boxes
void reloadProjectScales();
public slots:
/**
* Set the minimum scale. Infinite will be handled equally to 0 internally.
*/
void setMinimumScale( double scale );
/**
* Set the maximum scale. Infinite will be handled equally to 0 internally.
*/
void setMaximumScale( double scale );
void setScaleRange( double min, double max );
signals:
/** Emitted when the scale range set in the widget is changed.
* @param min minimum scale
* @param max maximum scale
* @note added in QGIS 2.16
*/
void rangeChanged( double min, double max );
private slots:
void emitRangeChanged();
private:
//! pointer to the map canvas used for current buttons.
QgsMapCanvas* mCanvas;
// ui
QGridLayout* mLayout;
QLabel* mMaximumScaleIconLabel;
QLabel* mMinimumScaleIconLabel;
QgsScaleWidget* mMaximumScaleWidget;
QgsScaleWidget* mMinimumScaleWidget;
};
#endif // QGSSCALERANGEWIDGET_H
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