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/*
* Copyright (C) 2005-2017 Centre National d'Etudes Spatiales (CNES)
*
* This file is part of Orfeo Toolbox
*
* https://www.orfeo-toolbox.org/
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "mvdProjectionBarWidget.h"
#include "ui_mvdProjectionBarWidget.h"
namespace mvd
{
ProjectionBarWidget::ProjectionBarWidget( QWidget* p, Qt::WindowFlags flags ) :
QWidget( p, flags )
, m_UI( new mvd::Ui::ProjectionBarWidget() )
{
m_UI->setupUi( this );
}
ProjectionBarWidget::~ProjectionBarWidget()
{
delete m_UI;
m_UI = NULL;
}
void ProjectionBarWidget::SetProjectionScale(double scale_x, double )
{
QString text = "1:1";
if( scale_x>1.0 )
text = QString( "%1:1" ).arg( scale_x );
else if( scale_x<1.0 )
text = QString( "1:%1" ).arg( 1.0 / scale_x );
m_UI->projectionScaleLineEdit->setText(text);
}
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void ProjectionBarWidget::on_projectionScaleLineEdit_returnPressed()
{
ChangeScale();
}
void ProjectionBarWidget::on_projectionScaleLineEdit_editingFinished()
{
if(m_UI->projectionScaleLineEdit->isModified())
{
ChangeScale();
}
}
void ProjectionBarWidget::ChangeScale()
{
// Cancel if scale text is empty.
if( m_UI->projectionScaleLineEdit->text().isEmpty() )
return;
// Split scale text.
QStringList scale( m_UI->projectionScaleLineEdit->text().split( ':' ) );
if( scale.size()!=1 && scale.size()!=2 )
return;
// Convert scale numerator.
bool isOk = true;
double numerator = scale.front().toDouble( &isOk );
if( !isOk || numerator==0.0 )
return;
// Convert scale denominator.
double denominator = 1.0;
if( scale.size()>1 )
{
denominator = scale.back().toDouble( &isOk );
if( !isOk )
return;
}
// Emit scale changed.
emit ProjectionScaleChanged( numerator / denominator );
}
}