mirror of
https://github.com/GoldenCheetah/GoldenCheetah.git
synced 2026-02-13 16:18:42 +00:00
142 lines
3.2 KiB
C++
142 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
|
|
*****************************************************************************/
|
|
|
|
#include "qwt_plot.h"
|
|
#include "qwt_scale_div.h"
|
|
#include "qwt_plot_magnifier.h"
|
|
#include "qwt_axes_mask.h"
|
|
|
|
class QwtPlotMagnifier::PrivateData
|
|
{
|
|
public:
|
|
QwtAxesMask disabledAxes;
|
|
};
|
|
|
|
/*!
|
|
Constructor
|
|
\param canvas Plot canvas to be magnified
|
|
*/
|
|
QwtPlotMagnifier::QwtPlotMagnifier( QWidget *canvas ):
|
|
QwtMagnifier( canvas )
|
|
{
|
|
d_data = new PrivateData();
|
|
}
|
|
|
|
//! Destructor
|
|
QwtPlotMagnifier::~QwtPlotMagnifier()
|
|
{
|
|
delete d_data;
|
|
}
|
|
|
|
/*!
|
|
\brief En/Disable an axis
|
|
|
|
Only Axes that are enabled will be zoomed.
|
|
All other axes will remain unchanged.
|
|
|
|
\param axisId Axis id
|
|
\param on On/Off
|
|
|
|
\sa isAxisEnabled()
|
|
*/
|
|
void QwtPlotMagnifier::setAxisEnabled( QwtAxisId axisId, bool on )
|
|
{
|
|
d_data->disabledAxes.setEnabled( axisId, !on );
|
|
}
|
|
|
|
/*!
|
|
Test if an axis is enabled
|
|
|
|
\param axisId Axis id
|
|
\return True, if the axis is enabled
|
|
|
|
\sa setAxisEnabled()
|
|
*/
|
|
bool QwtPlotMagnifier::isAxisEnabled( QwtAxisId axisId ) const
|
|
{
|
|
return !d_data->disabledAxes.isEnabled( axisId );
|
|
}
|
|
|
|
//! Return observed plot canvas
|
|
QWidget *QwtPlotMagnifier::canvas()
|
|
{
|
|
return parentWidget();
|
|
}
|
|
|
|
//! Return Observed plot canvas
|
|
const QWidget *QwtPlotMagnifier::canvas() const
|
|
{
|
|
return parentWidget();
|
|
}
|
|
|
|
//! Return plot widget, containing the observed plot canvas
|
|
QwtPlot *QwtPlotMagnifier::plot()
|
|
{
|
|
QWidget *w = canvas();
|
|
if ( w )
|
|
w = w->parentWidget();
|
|
|
|
return qobject_cast<QwtPlot *>( w );
|
|
}
|
|
|
|
//! Return plot widget, containing the observed plot canvas
|
|
const QwtPlot *QwtPlotMagnifier::plot() const
|
|
{
|
|
const QWidget *w = canvas();
|
|
if ( w )
|
|
w = w->parentWidget();
|
|
|
|
return qobject_cast<const QwtPlot *>( w );
|
|
}
|
|
|
|
/*!
|
|
Zoom in/out the axes scales
|
|
\param factor A value < 1.0 zooms in, a value > 1.0 zooms out.
|
|
*/
|
|
void QwtPlotMagnifier::rescale( double factor )
|
|
{
|
|
QwtPlot* plt = plot();
|
|
if ( plt == NULL )
|
|
return;
|
|
|
|
factor = qAbs( factor );
|
|
if ( factor == 1.0 || factor == 0.0 )
|
|
return;
|
|
|
|
bool doReplot = false;
|
|
|
|
const bool autoReplot = plt->autoReplot();
|
|
plt->setAutoReplot( false );
|
|
|
|
for ( int axisPos = 0; axisPos < QwtAxis::PosCount; axisPos++ )
|
|
{
|
|
const int axesCount = plt->axesCount( axisPos );
|
|
|
|
for ( int i = 0; i < axesCount; i++ )
|
|
{
|
|
const QwtAxisId axisId( axisPos, i );
|
|
|
|
const QwtScaleDiv &scaleDiv = plt->axisScaleDiv( axisId );
|
|
if ( isAxisEnabled( axisId ) )
|
|
{
|
|
const double center = scaleDiv.lowerBound() + scaleDiv.range() / 2;
|
|
const double width_2 = scaleDiv.range() / 2 * factor;
|
|
|
|
plt->setAxisScale( axisId, center - width_2, center + width_2 );
|
|
doReplot = true;
|
|
}
|
|
}
|
|
}
|
|
|
|
plt->setAutoReplot( autoReplot );
|
|
|
|
if ( doReplot )
|
|
plt->replot();
|
|
}
|