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ba64e3e533
Fixes when a member is initialized both in the header and source to the same initial value (via clang-tidy modernize-use-default-member-init fixit)
124 lines
3.6 KiB
C++
124 lines
3.6 KiB
C++
/***************************************************************************
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qgslegendfilterbutton.h - QToolButton for legend filter by map content
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--------------------------------------
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Date : June 2015
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Copyright : (C) 2015 by Hugo Mercier at Oslandia
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Email : hugo dot mercier at oslandia dot com
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***************************************************************************
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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***************************************************************************/
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#include "qgslegendfilterbutton.h"
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#include <QMenu>
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#include <QAction>
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#include "qgsapplication.h"
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#include "qgsexpressionbuilderdialog.h"
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QgsLegendFilterButton::QgsLegendFilterButton( QWidget *parent )
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: QToolButton( parent )
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{
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mMenu = new QMenu( this );
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mSetExpressionAction = new QAction( tr( "Edit filter expression" ), mMenu );
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connect( mSetExpressionAction, &QAction::triggered, this, &QgsLegendFilterButton::onSetLegendFilterExpression );
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mClearExpressionAction = new QAction( tr( "Clear filter expression" ), mMenu );
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connect( mClearExpressionAction, &QAction::triggered, this, &QgsLegendFilterButton::onClearFilterExpression );
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mClearExpressionAction->setEnabled( false );
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mMenu->addAction( mSetExpressionAction );
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mMenu->addAction( mClearExpressionAction );
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setCheckable( true );
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setIcon( QgsApplication::getThemeIcon( QStringLiteral( "/mIconExpressionFilter.svg" ) ) );
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setPopupMode( QToolButton::MenuButtonPopup );
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setMenu( mMenu );
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connect( this, &QAbstractButton::toggled, this, &QgsLegendFilterButton::onToggle );
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}
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void QgsLegendFilterButton::onToggle( bool checked )
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{
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if ( checked && expressionText().isEmpty() )
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{
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// show the dialog if the current expression is empty
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blockSignals( true );
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onSetLegendFilterExpression();
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blockSignals( false );
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}
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}
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void QgsLegendFilterButton::onSetLegendFilterExpression()
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{
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QgsExpressionBuilderDialog dlg( mLayer, mExpression );
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if ( dlg.exec() )
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{
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setExpressionText( dlg.expressionText() );
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bool emitSignal = false;
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if ( !expressionText().isEmpty() )
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{
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emitSignal = isChecked();
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setChecked( true );
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}
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else
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{
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emitSignal = !isChecked();
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setChecked( false );
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}
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if ( emitSignal )
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emit toggled( isChecked() );
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}
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}
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void QgsLegendFilterButton::onClearFilterExpression()
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{
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mClearExpressionAction->setEnabled( false );
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setExpressionText( QLatin1String( "" ) );
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setChecked( false );
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}
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void QgsLegendFilterButton::updateMenu()
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{
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if ( !mExpression.isEmpty() )
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{
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mClearExpressionAction->setEnabled( true );
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mSetExpressionAction->setText( QString( tr( "Edit filter expression (current: %1)" ) ).arg( mExpression ) );
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}
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else
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{
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mClearExpressionAction->setEnabled( false );
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mSetExpressionAction->setText( tr( "Edit filter expression" ) );
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}
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}
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QString QgsLegendFilterButton::expressionText() const
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{
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return mExpression;
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}
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void QgsLegendFilterButton::setExpressionText( const QString &expression )
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{
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mExpression = expression;
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updateMenu();
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}
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QgsVectorLayer *QgsLegendFilterButton::vectorLayer() const
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{
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return mLayer;
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}
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void QgsLegendFilterButton::setVectorLayer( QgsVectorLayer *layer )
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{
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mLayer = layer;
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}
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