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qgsmaptoolidentifyaction.cpp
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qgsmaptoolidentifyaction.cpp
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/***************************************************************************
qgsmaptoolidentify.cpp - map tool for identifying features
---------------------
begin : January 2006
copyright : (C) 2006 by Martin Dobias
email : wonder.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 "qgscursors.h"
#include "qgsdistancearea.h"
#include "qgsfeature.h"
#include "qgsfield.h"
#include "qgsgeometry.h"
#include "qgslogger.h"
#include "qgsidentifyresultsdialog.h"
#include "qgsmapcanvas.h"
#include "qgsmaptopixel.h"
#include "qgsmessageviewer.h"
#include "qgsmaptoolidentifyaction.h"
#include "qgsrasterlayer.h"
#include "qgscoordinatereferencesystem.h"
#include "qgsvectordataprovider.h"
#include "qgsvectorlayer.h"
#include "qgsproject.h"
#include "qgsmaplayerregistry.h"
#include "qgisapp.h"
#include "qgsrendererv2.h"
#include <QSettings>
#include <QMessageBox>
#include <QMouseEvent>
#include <QCursor>
#include <QPixmap>
#include <QStatusBar>
#include <QVariant>
QgsMapToolIdentifyAction::QgsMapToolIdentifyAction( QgsMapCanvas * canvas )
: QgsMapToolIdentify( canvas )
{
// set cursor
QPixmap myIdentifyQPixmap = QPixmap(( const char ** ) identify_cursor );
mCursor = QCursor( myIdentifyQPixmap, 1, 1 );
connect( this, SIGNAL( changedRasterResults( QList<IdentifyResult>& ) ), this, SLOT( handleChangedRasterResults( QList<IdentifyResult>& ) ) );
}
QgsMapToolIdentifyAction::~QgsMapToolIdentifyAction()
{
if ( mResultsDialog )
{
mResultsDialog->done( 0 );
}
}
QgsIdentifyResultsDialog *QgsMapToolIdentifyAction::resultsDialog()
{
if ( !mResultsDialog )
{
mResultsDialog = new QgsIdentifyResultsDialog( mCanvas, mCanvas->window() );
connect( mResultsDialog, SIGNAL( formatChanged( QgsRasterLayer * ) ), this, SLOT( formatChanged( QgsRasterLayer * ) ) );
connect( mResultsDialog, SIGNAL( copyToClipboard( QgsFeatureStore & ) ), this, SLOT( handleCopyToClipboard( QgsFeatureStore & ) ) );
}
return mResultsDialog;
}
void QgsMapToolIdentifyAction::canvasMoveEvent( QMouseEvent *e )
{
Q_UNUSED( e );
}
void QgsMapToolIdentifyAction::canvasPressEvent( QMouseEvent *e )
{
Q_UNUSED( e );
}
void QgsMapToolIdentifyAction::canvasReleaseEvent( QMouseEvent *e )
{
if ( !mCanvas || mCanvas->isDrawing() )
{
return;
}
resultsDialog()->clear();
connect( this, SIGNAL( identifyProgress( int, int ) ), QgisApp::instance(), SLOT( showProgress( int, int ) ) );
connect( this, SIGNAL( identifyMessage( QString ) ), QgisApp::instance(), SLOT( showStatusMessage( QString ) ) );
QList<IdentifyResult> results = QgsMapToolIdentify::identify( e->x(), e->y() );
disconnect( this, SIGNAL( identifyProgress( int, int ) ), QgisApp::instance(), SLOT( showProgress( int, int ) ) );
disconnect( this, SIGNAL( identifyMessage( QString ) ), QgisApp::instance(), SLOT( showStatusMessage( QString ) ) );
QList<IdentifyResult>::const_iterator result;
for ( result = results.begin(); result != results.end(); ++result )
{
resultsDialog()->addFeature( *result );
}
if ( !results.isEmpty() )
{
resultsDialog()->show();
}
else
{
QSettings mySettings;
bool myDockFlag = mySettings.value( "/qgis/dockIdentifyResults", false ).toBool();
if ( !myDockFlag )
{
resultsDialog()->hide();
}
else
{
resultsDialog()->clear();
}
QgisApp::instance()->statusBar()->showMessage( tr( "No features at this position found." ) );
}
}
void QgsMapToolIdentifyAction::handleChangedRasterResults( QList<IdentifyResult> &results )
{
// Add new result after raster format change
QgsDebugMsg( QString( "%1 raster results" ).arg( results.size() ) );
QList<IdentifyResult>::const_iterator rresult;
for ( rresult = results.begin(); rresult != results.end(); ++rresult )
{
if ( rresult->mLayer->type() == QgsMapLayer::RasterLayer )
{
resultsDialog()->addFeature( qobject_cast<QgsRasterLayer *>( rresult->mLayer ), rresult->mLabel, rresult->mAttributes, rresult->mDerivedAttributes, rresult->mFields, rresult->mFeature );
}
}
}
void QgsMapToolIdentifyAction::activate()
{
resultsDialog()->activate();
QgsMapTool::activate();
}
void QgsMapToolIdentifyAction::deactivate()
{
resultsDialog()->deactivate();
QgsMapTool::deactivate();
}
QGis::UnitType QgsMapToolIdentifyAction::displayUnits()
{
// Get the units for display
QSettings settings;
return QGis::fromLiteral( settings.value( "/qgis/measure/displayunits", QGis::toLiteral( QGis::Meters ) ).toString() );
}
void QgsMapToolIdentifyAction::handleCopyToClipboard( QgsFeatureStore & featureStore )
{
QgsDebugMsg( QString( "features count = %1" ).arg( featureStore.features().size() ) );
emit copyToClipboard( featureStore );
}