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qgssinglesymbolrendererwidget.cpp
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qgssinglesymbolrendererwidget.cpp
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/***************************************************************************
qgssinglesymbolrendererwidget.cpp
---------------------
begin : November 2009
copyright : (C) 2009 by Martin Dobias
email : wonder dot sk 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 "qgssinglesymbolrendererwidget.h"
#include "qgsdatadefinedsizelegend.h"
#include "qgsdatadefinedsizelegendwidget.h"
#include "qgssinglesymbolrenderer.h"
#include "qgssymbol.h"
#include "qgslogger.h"
#include "qgsvectorlayer.h"
#include "qgssymbolselectordialog.h"
#include <QMenu>
QgsRendererWidget *QgsSingleSymbolRendererWidget::create( QgsVectorLayer *layer, QgsStyle *style, QgsFeatureRenderer *renderer )
{
return new QgsSingleSymbolRendererWidget( layer, style, renderer );
}
QgsSingleSymbolRendererWidget::QgsSingleSymbolRendererWidget( QgsVectorLayer *layer, QgsStyle *style, QgsFeatureRenderer *renderer )
: QgsRendererWidget( layer, style )
{
// try to recognize the previous renderer
// (null renderer means "no previous renderer")
if ( renderer )
{
mRenderer.reset( QgsSingleSymbolRenderer::convertFromRenderer( renderer ) );
}
if ( !mRenderer )
{
QgsSymbol *symbol = QgsSymbol::defaultSymbol( mLayer->geometryType() );
if ( symbol )
mRenderer = std::make_unique< QgsSingleSymbolRenderer >( symbol );
}
// load symbol from it
if ( mRenderer )
mSingleSymbol.reset( mRenderer->symbol()->clone() );
// setup ui
mSelector = new QgsSymbolSelectorWidget( mSingleSymbol.get(), mStyle, mLayer, nullptr );
connect( mSelector, &QgsSymbolSelectorWidget::symbolModified, this, &QgsSingleSymbolRendererWidget::changeSingleSymbol );
connect( mSelector, &QgsPanelWidget::showPanel, this, &QgsPanelWidget::openPanel );
QVBoxLayout *layout = new QVBoxLayout( this );
layout->setContentsMargins( 0, 0, 0, 0 );
layout->addWidget( mSelector );
// advanced actions - data defined rendering
QMenu *advMenu = mSelector->advancedMenu();
QAction *actionLevels = advMenu->addAction( tr( "Symbol Levels…" ) );
connect( actionLevels, &QAction::triggered, this, &QgsSingleSymbolRendererWidget::showSymbolLevels );
if ( mSingleSymbol && mSingleSymbol->type() == QgsSymbol::Marker )
{
QAction *actionDdsLegend = advMenu->addAction( tr( "Data-defined Size Legend…" ) );
connect( actionDdsLegend, &QAction::triggered, this, &QgsSingleSymbolRendererWidget::dataDefinedSizeLegend );
}
}
QgsSingleSymbolRendererWidget::~QgsSingleSymbolRendererWidget()
{
mSingleSymbol.reset();
mRenderer.reset();
delete mSelector;
}
QgsFeatureRenderer *QgsSingleSymbolRendererWidget::renderer()
{
return mRenderer.get();
}
void QgsSingleSymbolRendererWidget::setContext( const QgsSymbolWidgetContext &context )
{
QgsRendererWidget::setContext( context );
if ( mSelector )
mSelector->setContext( context );
}
void QgsSingleSymbolRendererWidget::setDockMode( bool dockMode )
{
QgsRendererWidget::setDockMode( dockMode );
if ( mSelector )
mSelector->setDockMode( dockMode );
}
void QgsSingleSymbolRendererWidget::setSymbolLevels( const QList<QgsLegendSymbolItem> &levels, bool enabled )
{
mSingleSymbol.reset( levels.at( 0 ).symbol()->clone() );
mRenderer->setSymbol( mSingleSymbol->clone() );
mRenderer->setUsingSymbolLevels( enabled );
mSelector->loadSymbol( mSingleSymbol.get() );
emit widgetChanged();
}
void QgsSingleSymbolRendererWidget::changeSingleSymbol()
{
// update symbol from the GUI
mRenderer->setSymbol( mSingleSymbol->clone() );
emit widgetChanged();
}
void QgsSingleSymbolRendererWidget::showSymbolLevels()
{
showSymbolLevelsDialog( mRenderer.get() );
}
void QgsSingleSymbolRendererWidget::dataDefinedSizeLegend()
{
QgsMarkerSymbol *s = static_cast<QgsMarkerSymbol *>( mSingleSymbol.get() ); // this should be only enabled for marker symbols
QgsDataDefinedSizeLegendWidget *panel = createDataDefinedSizeLegendWidget( s, mRenderer->dataDefinedSizeLegend() );
if ( panel )
{
connect( panel, &QgsPanelWidget::widgetChanged, this, [ = ]
{
mRenderer->setDataDefinedSizeLegend( panel->dataDefinedSizeLegend() );
emit widgetChanged();
} );
openPanel( panel ); // takes ownership of the panel
}
}