/*
* uDig - User Friendly Desktop Internet GIS client
* http://udig.refractions.net
* (C) 2004, Refractions Research Inc.
*
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* (http://www.eclipse.org/legal/epl-v10.html), and the Refractions BSD
* License v1.0 (http://udig.refractions.net/files/bsd3-v10.html).
*
*/
package org.locationtech.udig.tool.info;
import java.awt.Point;
import java.awt.Rectangle;
import org.locationtech.udig.project.ui.ApplicationGIS;
import org.locationtech.udig.project.ui.commands.SelectionBoxCommand;
import org.locationtech.udig.project.ui.render.displayAdapter.MapMouseEvent;
import org.locationtech.udig.project.ui.tool.AbstractModalTool;
import org.locationtech.udig.project.ui.tool.ModalTool;
import org.locationtech.udig.tool.info.internal.InfoView2;
import org.eclipse.jface.viewers.StructuredSelection;
import org.eclipse.swt.widgets.Display;
import org.eclipse.ui.IWorkbenchPage;
import org.eclipse.ui.PlatformUI;
import org.geotools.geometry.jts.ReferencedEnvelope;
/**
* InfoTool is Map Tool used to grab identity information about what is on the screen.
* <p>
* InfoTool makes use its ModalTool superclass to access RenderManager;
* getInfo is a first class request supported by the API. You can however trace through
* this code as an example for creating your own tools.
* </p>
* <p>
* Workflow:
* <ul>
* <li>RenderManger.getInfo( Point ) for each renderer asks ...
* <li>Renderer.getInfo( Point ) which ...
* <li>back projects Point to a Extent used with
* <li>Resource (ie FeatureSource.getFeatures( filter ) to arrive at
* <li>Information (ie a FeatureCollection) wrapped in an LayerPointInfo providing
* <li>LayerPointInfo.getObject() & LayerPointInfo.getMimeType()
* </ul>
* </p>
*
* @author Jody Garnett
* @version $Revision: 1.9 $
*/
public class InfoTool extends AbstractModalTool implements ModalTool {
/**
* ID of the current tool.
*/
public static final String ID = "org.locationtech.udig.tool.info.infoMode"; //$NON-NLS-1$
public static final String CATEGORY_ID = "org.locationtech.udig.tool.category.info"; //$NON-NLS-1$
/**
* Creates an LayerPointInfo Tool.
*/
public InfoTool() {
super( MOUSE | MOTION );
}
@Override
public void mousePressed( MapMouseEvent e ) {
draw.setValid( true ); // make sure context.getViewportPane().repaint() knows about us
context.sendASyncCommand( draw ); // should of isValided us
feedback( e );
}
@Override
public void mouseDragged( MapMouseEvent e ) {
feedback( e );
}
SelectionBoxCommand draw = new SelectionBoxCommand();
/** This is the "previous" square so we can refresh the screen correctly */
private Rectangle previous;
/**
* Provides user feedback
* @param e
*/
public void feedback( MapMouseEvent e ) {
Rectangle square = new Rectangle(e.x-3, e.y-3, 5, 5);
draw.setShape( square );
if( previous != null ){
context.getViewportPane().repaint(previous.x-4, previous.y-4, previous.width+8, previous.height+8);
}
previous = square;
context.getViewportPane().repaint(square.x-4, square.y-4, square.width+8, square.height+8);
//context.getViewportPane().repaint();
}
/**
* What's this then?
* <p>
* See class description for intended workflow.
* </p>
* @see org.locationtech.udig.project.ui.tool.AbstractTool#mouseReleased(MapMouseEvent)
*/
public void mouseReleased(MapMouseEvent e) {
try {
ReferencedEnvelope bbox = context.getBoundingBox( e.getPoint(), 5 );
final InfoView2.InfoRequest request = new InfoView2.InfoRequest();
request.bbox = bbox;
request.layers = context.getMapLayers();
Display.getDefault().asyncExec(new Runnable(){
public void run() {
InfoView2 infoView=(InfoView2) ApplicationGIS.getView(true, InfoView2.VIEW_ID);
// JONES: deselect current feature so it won't flash when view is activated (it won't be valid
// one the new search passes.
if( infoView!=null)
if( infoView.getSite().getSelectionProvider()!=null )
infoView.getSite().getSelectionProvider().setSelection(new StructuredSelection());
//JONES: activate view now that there is no current selection.
IWorkbenchPage page = PlatformUI.getWorkbench().getActiveWorkbenchWindow().getActivePage();
if (!page.isPartVisible(infoView)) page.bringToTop(infoView);
// we got here and info was null? Don't want to fail on first attempt
infoView=(InfoView2) ApplicationGIS.getView(false, InfoView2.VIEW_ID);
infoView.search( request );
}
});
} catch ( Throwable e1) {
// Should log problem ..
InfoPlugin.log( "Could not display information", e1 ); //$NON-NLS-1$
}
finally {
draw.setValid( false ); // get us off the draw stack for context.getViewportPane().repaint();
context.getViewportPane().repaint();
}
}
/**
* @see org.locationtech.udig.project.ui.tool.Tool#dispose()
*/
public void dispose() {
super.dispose();
}
}