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[FEATURE] add "feature action" map tool to run actions directly when …
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
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| /*************************************************************************** | ||
| qgsmaptoolfeatureaction.h - map tool for running feature actions | ||
| --------------------- | ||
| begin : January 2012 | ||
| copyright : (C) 2012 by Giuseppe Sucameli | ||
| email : brush.tyler 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. * | ||
| * * | ||
| ***************************************************************************/ | ||
|
|
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| #include "qgsmaptoolfeatureaction.h" | ||
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| #include "qgsdistancearea.h" | ||
| #include "qgsfeature.h" | ||
| #include "qgsfield.h" | ||
| #include "qgsgeometry.h" | ||
| #include "qgslogger.h" | ||
| #include "qgsmapcanvas.h" | ||
| #include "qgsmaptopixel.h" | ||
| #include "qgsmessageviewer.h" | ||
| #include "qgsattributeaction.h" | ||
| #include "qgscoordinatereferencesystem.h" | ||
| #include "qgsvectordataprovider.h" | ||
| #include "qgsvectorlayer.h" | ||
| #include "qgsproject.h" | ||
| #include "qgsmaplayerregistry.h" | ||
| #include "qgisapp.h" | ||
|
|
||
| #include <QSettings> | ||
| #include <QMessageBox> | ||
| #include <QMouseEvent> | ||
| #include <QStatusBar> | ||
|
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||
| QgsMapToolFeatureAction::QgsMapToolFeatureAction( QgsMapCanvas* canvas ) | ||
| : QgsMapTool( canvas ) | ||
| { | ||
| } | ||
|
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| QgsMapToolFeatureAction::~QgsMapToolFeatureAction() | ||
| { | ||
| } | ||
|
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| void QgsMapToolFeatureAction::canvasMoveEvent( QMouseEvent *e ) | ||
| { | ||
| Q_UNUSED( e ); | ||
| } | ||
|
|
||
| void QgsMapToolFeatureAction::canvasPressEvent( QMouseEvent *e ) | ||
| { | ||
| Q_UNUSED( e ); | ||
| } | ||
|
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||
| void QgsMapToolFeatureAction::canvasReleaseEvent( QMouseEvent *e ) | ||
| { | ||
| if ( !mCanvas || mCanvas->isDrawing() ) | ||
| { | ||
| return; | ||
| } | ||
|
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| QgsMapLayer *layer = mCanvas->currentLayer(); | ||
|
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| if ( !layer || layer->type() != QgsMapLayer::VectorLayer ) | ||
| { | ||
| QMessageBox::warning( mCanvas, | ||
| tr( "No active vector layer" ), | ||
| tr( "To run an action, you must choose a vector layer by clicking on its name in the legend" ) ); | ||
| return; | ||
| } | ||
|
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||
| QgsVectorLayer *vlayer = qobject_cast<QgsVectorLayer *>( layer ); | ||
| if ( vlayer->actions()->size() == 0 ) | ||
| { | ||
| QMessageBox::warning( mCanvas, | ||
| tr( "No actions available" ), | ||
| tr( "The active vector layer has no defined actions" ) ); | ||
| return; | ||
| } | ||
|
|
||
| if ( !doAction( vlayer, e->x(), e->y() ) ) | ||
| QgisApp::instance()->statusBar()->showMessage( tr( "No features at this position found." ) ); | ||
| } | ||
|
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| void QgsMapToolFeatureAction::activate() | ||
| { | ||
| QgsMapTool::activate(); | ||
| } | ||
|
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| void QgsMapToolFeatureAction::deactivate() | ||
| { | ||
| QgsMapTool::deactivate(); | ||
| } | ||
|
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| bool QgsMapToolFeatureAction::doAction( QgsVectorLayer *layer, int x, int y ) | ||
| { | ||
| if ( !layer ) | ||
| return false; | ||
|
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||
| QgsPoint point = mCanvas->getCoordinateTransform()->toMapCoordinates( x, y ); | ||
|
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| // load identify radius from settings | ||
| QSettings settings; | ||
| double identifyValue = settings.value( "/Map/identifyRadius", QGis::DEFAULT_IDENTIFY_RADIUS ).toDouble(); | ||
| QString ellipsoid = settings.value( "/qgis/measure/ellipsoid", "WGS84" ).toString(); | ||
|
|
||
| if ( identifyValue <= 0.0 ) | ||
| identifyValue = QGis::DEFAULT_IDENTIFY_RADIUS; | ||
|
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| QgsFeature feat; | ||
|
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| // toLayerCoordinates will throw an exception for an 'invalid' point. | ||
| // For example, if you project a world map onto a globe using EPSG 2163 | ||
| // and then click somewhere off the globe, an exception will be thrown. | ||
| try | ||
| { | ||
| // create the search rectangle | ||
| double searchRadius = mCanvas->extent().width() * ( identifyValue / 100.0 ); | ||
|
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| QgsRectangle r; | ||
| r.setXMinimum( point.x() - searchRadius ); | ||
| r.setXMaximum( point.x() + searchRadius ); | ||
| r.setYMinimum( point.y() - searchRadius ); | ||
| r.setYMaximum( point.y() + searchRadius ); | ||
|
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| r = toLayerCoordinates( layer, r ); | ||
|
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| layer->select( layer->pendingAllAttributesList(), r, true, true ); | ||
| QgsFeature f; | ||
| if ( layer->nextFeature( f ) ) | ||
| feat = QgsFeature( f ); | ||
| else | ||
| return false; | ||
| } | ||
| catch ( QgsCsException & cse ) | ||
| { | ||
| Q_UNUSED( cse ); | ||
| // catch exception for 'invalid' point and proceed with no features found | ||
| QgsDebugMsg( QString( "Caught CRS exception %1" ).arg( cse.what() ) ); | ||
| } | ||
|
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| int action = layer->actions()->defaultAction(); | ||
|
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| // define custom substitutions: layer id and clicked coords | ||
| QMap<QString, QVariant> substitutionMap; | ||
| substitutionMap.insert( "$layerid", layer->id() ); | ||
| point = toLayerCoordinates( layer, point ); | ||
| substitutionMap.insert( "$clickx", point.x() ); | ||
| substitutionMap.insert( "$clicky", point.y() ); | ||
|
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| layer->actions()->doAction( action, feat, &substitutionMap ); | ||
| return true; | ||
| } |
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