qgslabelobstaclesettingswidget.cpp

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/***************************************************************************
    qgslabelobstaclesettingswidget.h
    ----------------------
    begin                : December 2019
    copyright            : (C) 2019 by Nyall Dawson
    email                : nyall dot dawson at gmail dot 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.                                   *
 *                                                                         *
 ***************************************************************************/
 
 
#include "qgslabelobstaclesettingswidget.h"
#include "qgsexpressioncontextutils.h"
 
QgsLabelObstacleSettingsWidget::QgsLabelObstacleSettingsWidget( QWidget *parent, QgsVectorLayer *vl )
  : QgsLabelSettingsWidgetBase( parent, vl )
{
  setupUi( this );
 
  setPanelTitle( tr( "Obstacle Settings" ) );
 
  mObstacleTypeComboBox->addItem( tr( "Over the Feature's Interior" ), static_cast<int>( QgsLabelObstacleSettings::ObstacleType::PolygonInterior ) );
  mObstacleTypeComboBox->addItem( tr( "Over the Feature's Boundary" ), static_cast< int >( QgsLabelObstacleSettings::ObstacleType::PolygonBoundary ) );
 
  connect( mObstacleTypeComboBox, qOverload<int>( &QComboBox::currentIndexChanged ), this, [ = ]( int )
  {
    if ( !mBlockSignals )
      emit changed();
  } );
  connect( mObstacleFactorSlider, &QSlider::valueChanged, this, [ = ]
  {
    if ( !mBlockSignals )
      emit changed();
  } );
 
  registerDataDefinedButton( mObstacleFactorDDBtn, QgsPalLayerSettings::Property::ObstacleFactor );
}
 
void QgsLabelObstacleSettingsWidget::setSettings( const QgsLabelObstacleSettings &settings )
{
  mBlockSignals = true;
  mObstacleFactorSlider->setValue( static_cast< int >( std::round( settings.factor() * 5 ) ) );
  mObstacleTypeComboBox->setCurrentIndex( mObstacleTypeComboBox->findData( static_cast< int >( settings.type() ) ) );
  mBlockSignals = false;
}
 
QgsLabelObstacleSettings QgsLabelObstacleSettingsWidget::settings() const
{
  QgsLabelObstacleSettings settings;
  settings.setFactor( mObstacleFactorSlider->value() / 5.0 );
  settings.setType( static_cast< QgsLabelObstacleSettings::ObstacleType >( mObstacleTypeComboBox->currentData().toInt() ) );
  return settings;
}
 
void QgsLabelObstacleSettingsWidget::setGeometryType( Qgis::GeometryType type )
{
  mObstacleTypeComboBox->setVisible( type == Qgis::GeometryType::Polygon || type == Qgis::GeometryType::Unknown );
  mObstacleTypeLabel->setVisible( type == Qgis::GeometryType::Polygon || type == Qgis::GeometryType::Unknown );
}
 
void QgsLabelObstacleSettingsWidget::updateDataDefinedProperties( QgsPropertyCollection &properties )
{
  properties.setProperty( QgsPalLayerSettings::Property::ObstacleFactor, mDataDefinedProperties.property( QgsPalLayerSettings::Property::ObstacleFactor ) );
}