QList<QgsMapToolIdentify::IdentifyResult> QgsMapToolIdentify::identify( int x, int y, IdentifyMode mode, QList<QgsMapLayer*> layerList, LayerType layerType )
{
QList<IdentifyResult> results;
mLastPoint = mCanvas->getCoordinateTransform()->toMapCoordinates( x, y );
mLastExtent = mCanvas->extent();
mLastMapUnitsPerPixel = mCanvas->mapUnitsPerPixel();
if ( mode == DefaultQgsSetting )
{
QSettings settings;
mode = static_cast<IdentifyMode>( settings.value( "/Map/identifyMode", 0 ).toInt() );
}
if ( mode == LayerSelection )
{
// fill map of layer / identify results
mLayerIdResults.clear();
QList<IdentifyResult> idResult = identify( x, y, TopDownAll );
QList<IdentifyResult>::const_iterator it = idResult.constBegin();
for ( ; it != idResult.constEnd(); ++it )
{
QgsMapLayer *layer = it->mLayer;
if ( mLayerIdResults.contains( layer ) )
{
mLayerIdResults[layer].append( *it );
}
else
{
mLayerIdResults.insert( layer, QList<IdentifyResult>() << *it );
}
}
//fill selection menu with entries from mmLayerIdResults
QMenu layerSelectionMenu;
QMap< QgsMapLayer*, QList<IdentifyResult> >::const_iterator resultIt = mLayerIdResults.constBegin();
for ( ; resultIt != mLayerIdResults.constEnd(); ++resultIt )
{
QAction* action = new QAction( QString( "%1 (%2)" ).arg( resultIt.key()->name() ).arg( resultIt.value().size() ), 0 );
action->setData( resultIt.key()->id() );
//add point/line/polygon icon
QgsVectorLayer* vl = qobject_cast<QgsVectorLayer*>( resultIt.key() );
if ( vl )
{
switch ( vl->geometryType() )
{
case QGis::Point:
action->setIcon( QgsApplication::getThemeIcon( "/mIconPointLayer.png" ) );
break;
case QGis::Line:
action->setIcon( QgsApplication::getThemeIcon( "/mIconLineLayer.png" ) );
break;
case QGis::Polygon:
action->setIcon( QgsApplication::getThemeIcon( "/mIconPolygonLayer.png" ) );
break;
default:
break;
}
}
else if ( resultIt.key()->type() == QgsMapLayer::RasterLayer )
{
action->setIcon( QgsApplication::getThemeIcon( "/mIconRaster.png" ) );
}
connect( action, SIGNAL( hovered() ), this, SLOT( handleMenuHover() ) );
layerSelectionMenu.addAction( action );
}
if ( mLayerIdResults.size() > 1 )
{
QAction *action = new QAction( tr( "All (%1)" ).arg( idResult.size() ), 0 );
connect( action, SIGNAL( hovered() ), this, SLOT( handleMenuHover() ) );
layerSelectionMenu.addAction( action );
}
// exec layer selection menu
QPoint globalPos = mCanvas->mapToGlobal( QPoint( x + 5, y + 5 ) );
QAction* selectedAction = layerSelectionMenu.exec( globalPos );
if ( selectedAction )
{
if ( selectedAction->data().toString().isEmpty() )
{
results = idResult;
}
else
{
QgsMapLayer* selectedLayer = QgsMapLayerRegistry::instance()->mapLayer( selectedAction->data().toString() );
QMap< QgsMapLayer*, QList<IdentifyResult> >::const_iterator sIt = mLayerIdResults.find( selectedLayer );
if ( sIt != mLayerIdResults.constEnd() )
{
results = sIt.value();
}
}
}
deleteRubberBands();
}
else if ( mode == ActiveLayer && layerList.isEmpty() )
{
QgsMapLayer *layer = mCanvas->currentLayer();
if ( !layer )
{
emit identifyMessage( tr( "No active layer. To identify features, you must choose an active layer." ) );
return results;
}
QApplication::setOverrideCursor( Qt::WaitCursor );
identifyLayer( &results, layer, mLastPoint, mLastExtent, mLastMapUnitsPerPixel, layerType );
}
else
{
QApplication::setOverrideCursor( Qt::WaitCursor );
QStringList noIdentifyLayerIdList = QgsProject::instance()->readListEntry( "Identify", "/disabledLayers" );
int layerCount;
if ( layerList.isEmpty() )
layerCount = mCanvas->layerCount();
else
layerCount = layerList.count();
for ( int i = 0; i < layerCount; i++ )
{
QgsMapLayer *layer ;
if ( layerList.isEmpty() )
layer = mCanvas->layer( i );
else
layer = layerList.value( i );
emit identifyProgress( i, mCanvas->layerCount() );
emit identifyMessage( tr( "Identifying on %1..." ).arg( layer->name() ) );
if ( noIdentifyLayerIdList.contains( layer->id() ) )
continue;
if ( identifyLayer( &results, layer, mLastPoint, mLastExtent, mLastMapUnitsPerPixel, layerType ) )
{
if ( mode == TopDownStopAtFirst )
break;
}
}
emit identifyProgress( mCanvas->layerCount(), mCanvas->layerCount() );
emit identifyMessage( tr( "Identifying done." ) );
}
QApplication::restoreOverrideCursor();
return results;
}
QList<QgsMapToolIdentify::IdentifyResult> QgsMapToolIdentify::identify( int x, int y, IdentifyMode mode, const QList<QgsMapLayer*>& layerList, const LayerType& layerType )
{
QList<IdentifyResult> results;
mLastPoint = mCanvas->getCoordinateTransform()->toMapCoordinates( x, y );
mLastExtent = mCanvas->extent();
mLastMapUnitsPerPixel = mCanvas->mapUnitsPerPixel();
if ( mode == DefaultQgsSetting )
{
QSettings settings;
mode = static_cast<IdentifyMode>( settings.value( "/Map/identifyMode", 0 ).toInt() );
}
if ( mode == LayerSelection )
{
QList<IdentifyResult> results = identify( x, y, TopDownAll, layerList, layerType );
QPoint globalPos = mCanvas->mapToGlobal( QPoint( x + 5, y + 5 ) );
return mIdentifyMenu->exec( results, globalPos );
}
else if ( mode == ActiveLayer && layerList.isEmpty() )
{
QgsMapLayer *layer = mCanvas->currentLayer();
if ( !layer )
{
emit identifyMessage( tr( "No active layer. To identify features, you must choose an active layer." ) );
return results;
}
QApplication::setOverrideCursor( Qt::WaitCursor );
identifyLayer( &results, layer, mLastPoint, mLastExtent, mLastMapUnitsPerPixel, layerType );
}
else
{
QApplication::setOverrideCursor( Qt::WaitCursor );
QStringList noIdentifyLayerIdList = QgsProject::instance()->readListEntry( "Identify", "/disabledLayers" );
int layerCount;
if ( layerList.isEmpty() )
layerCount = mCanvas->layerCount();
else
layerCount = layerList.count();
for ( int i = 0; i < layerCount; i++ )
{
QgsMapLayer *layer;
if ( layerList.isEmpty() )
layer = mCanvas->layer( i );
else
layer = layerList.value( i );
emit identifyProgress( i, mCanvas->layerCount() );
emit identifyMessage( tr( "Identifying on %1..." ).arg( layer->name() ) );
if ( noIdentifyLayerIdList.contains( layer->id() ) )
continue;
if ( identifyLayer( &results, layer, mLastPoint, mLastExtent, mLastMapUnitsPerPixel, layerType ) )
{
if ( mode == TopDownStopAtFirst )
break;
}
}
emit identifyProgress( mCanvas->layerCount(), mCanvas->layerCount() );
emit identifyMessage( tr( "Identifying done." ) );
}
QApplication::restoreOverrideCursor();
return results;
}
void QgsMapToolIdentify::canvasReleaseEvent( QMouseEvent *e )
{
if ( !mCanvas || mCanvas->isDrawing() )
{
return;
}
results()->clear();
QSettings settings;
int identifyMode = settings.value( "/Map/identifyMode", 0 ).toInt();
bool res = false;
if ( identifyMode == 0 )
{
QgsMapLayer *layer = mCanvas->currentLayer();
if ( !layer )
{
QMessageBox::warning( mCanvas,
tr( "No active layer" ),
tr( "To identify features, you must choose an active layer by clicking on its name in the legend" ) );
return;
}
QApplication::setOverrideCursor( Qt::WaitCursor );
res = identifyLayer( layer, e->x(), e->y() );
QApplication::restoreOverrideCursor();
}
else
{
connect( this, SIGNAL( identifyProgress( int, int ) ), QgisApp::instance(), SLOT( showProgress( int, int ) ) );
connect( this, SIGNAL( identifyMessage( QString ) ), QgisApp::instance(), SLOT( showStatusMessage( QString ) ) );
QApplication::setOverrideCursor( Qt::WaitCursor );
QStringList noIdentifyLayerIdList = QgsProject::instance()->readListEntry( "Identify", "/disabledLayers" );
for ( int i = 0; i < mCanvas->layerCount(); i++ )
{
QgsMapLayer *layer = mCanvas->layer( i );
emit identifyProgress( i, mCanvas->layerCount() );
emit identifyMessage( tr( "Identifying on %1..." ).arg( layer->name() ) );
if ( noIdentifyLayerIdList.contains( layer->id() ) )
continue;
if ( identifyLayer( layer, e->x(), e->y() ) )
{
res = true;
if ( identifyMode == 1 )
break;
}
}
emit identifyProgress( mCanvas->layerCount(), mCanvas->layerCount() );
emit identifyMessage( tr( "Identifying done." ) );
disconnect( this, SIGNAL( identifyProgress( int, int ) ), QgisApp::instance(), SLOT( showProgress( int, int ) ) );
disconnect( this, SIGNAL( identifyMessage( QString ) ), QgisApp::instance(), SLOT( showStatusMessage( QString ) ) );
QApplication::restoreOverrideCursor();
}
if ( res )
{
results()->show();
}
else
{
QSettings mySettings;
bool myDockFlag = mySettings.value( "/qgis/dockIdentifyResults", false ).toBool();
if ( !myDockFlag )
{
results()->hide();
}
else
{
results()->clear();
}
QgisApp::instance()->statusBar()->showMessage( tr( "No features at this position found." ) );
}
}