//$HeadURL$
/*---------------- FILE HEADER ------------------------------------------
This file is part of deegree.
Copyright (C) 2001-2008 by:
Department of Geography, University of Bonn
http://www.giub.uni-bonn.de/deegree/
lat/lon GmbH
http://www.lat-lon.de
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
Contact:
Andreas Poth
lat/lon GmbH
Aennchenstr. 19
53177 Bonn
Germany
E-Mail: poth@lat-lon.de
Prof. Dr. Klaus Greve
Department of Geography
University of Bonn
Meckenheimer Allee 166
53115 Bonn
Germany
E-Mail: greve@giub.uni-bonn.de
---------------------------------------------------------------------------*/
package org.deegree.igeo.views.swing.map;
import java.awt.Color;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.image.BufferedImage;
import java.util.concurrent.Callable;
import javax.swing.JComponent;
import org.deegree.framework.concurrent.Executor;
import org.deegree.framework.log.ILogger;
import org.deegree.framework.log.LoggerFactory;
import org.deegree.igeo.ChangeListener;
import org.deegree.igeo.ValueChangedEvent;
import org.deegree.igeo.mapmodel.LayerChangedEvent;
import org.deegree.igeo.views.LayerPane;
/**
*
* <code>JLayerComponent</code>
*
* @author <a href="mailto:buesching@lat-lon.de">Lyn Buesching</a>
* @author last edited by: $Author$
*
* @version $Revision$, $Date$
*
*/
public class LayerComponent extends JComponent implements ChangeListener {
private static final long serialVersionUID = -6707309401307638688L;
private static final ILogger LOG = LoggerFactory.getLogger( LayerComponent.class );
private LayerPane layerPane;
// image to paint on the parent component
private BufferedImage layerImage;
// indicates if the map model has been changed in a way that requires a complete repainting
private boolean forceRepaint = false;
public static boolean vectorPrintDialogPreviewHack = false;
/**
*
* @param layerPane
*/
public LayerComponent( LayerPane layerPane ) {
this.layerPane = layerPane;
this.layerPane.getLayer().addChangeListener( this );
}
/**
* Invoked every time the component should be painted...
*
* Three different options are possible:
*
* 1) there are no changes of the map model or size of the layers -> paint old layer ----------- 2) the map model
* has changed, but not the size of the layers -> update the image ------------ 3) the map model has changes and
* also the size of the layers -> create a new image ----------
*
*/
@Override
protected void paintComponent( Graphics g ) {
if ( !layerPane.getLayer().getTitle().startsWith( "deegree:Print" ) && vectorPrintDialogPreviewHack ) {
g.drawImage( layerImage, 0, 0, LayerComponent.this );
return;
}
if ( layerPane.isVisible() ) {
super.paintComponent( g );
// indicates if a new image must be created
boolean newImage = this.layerImage == null || this.forceRepaint || !layerPane.isValid();
if ( newImage ) {
LOG.logDebug( "paint layer with title " + layerPane.getLayer().getTitle() + ": create a NEW image" );
}
double min = layerPane.getLayer().getMinScaleDenominator();
double max = layerPane.getLayer().getMaxScaleDenominator();
double sc = layerPane.getMapModel().getScaleDenominator();
if ( min <= sc && max >= sc ) {
/*
* if ( newImage ) { this.forceRepaint = false;
*
* // create a new image if image is null or size of the map model has changed this.layerImage = new
* BufferedImage( getWidth(), getHeight(), BufferedImage.TYPE_INT_ARGB );
*
* // create graphics of the image to paint Graphics2D layerGraphics = this.layerImage.createGraphics();
* layerGraphics.setClip( 0, 0, getWidth(), getHeight() );
*
* // clear the old image layerGraphics.setBackground( new Color( 0, 0, 0, 0 ) );
* layerGraphics.clearRect( 0, 0, this.layerImage.getWidth(), this.layerImage.getHeight() );
*
* // draw layer this.layerPane.paint( layerGraphics );
*
* layerGraphics.dispose();
*
* } g.drawImage( layerImage, 0, 0, this );
*/
if ( newImage ) {
Executor.getInstance().performAsynchronously( new Renderer(), null );
} else {
g.drawImage( layerImage, 0, 0, LayerComponent.this );
}
}
}
}
/**
*
* @param forceRepaint
* true forces creating of a new image when component will be repainted nex time
*/
public void setForceDeepRepaint( boolean forceRepaint ) {
this.forceRepaint = forceRepaint;
}
/**
*
* @return the current image of the layer component
*/
public BufferedImage getImage() {
return layerImage;
}
/**
*
* @param layerImage
* the image of the layer
*/
public void setImage( BufferedImage layerImage ) {
this.layerImage = layerImage;
}
/**
*
* @return the layer pane of the layer component
*/
public LayerPane getLayerPane() {
return this.layerPane;
}
// /////////////////////////////////////////////////////////////////////////////////
// ChangeListener
// /////////////////////////////////////////////////////////////////////////////////
/**
* invoked when layer adapter has changed
*/
public void valueChanged( ValueChangedEvent event ) {
LayerChangedEvent layerEvent = (LayerChangedEvent) event;
switch ( layerEvent.getChangeType() ) {
case datasourceChanged:
case datasourceAdded:
case datasourceRemoved:
case dataChanged:
case stylesSet:
this.forceRepaint = true;
if ( getParent() != null ) {
getParent().repaint();
}
break;
case visibilityChanged:
if ( getParent() != null ) {
getParent().repaint();
}
break;
}
}
/**
* This needs to be called to ensure proper GC!
*/
public void destroy() {
this.layerPane.getLayer().removeChangeListener( this );
}
// /////////////////////////////////////////////////////////////////////////////////
// Inner classes
// /////////////////////////////////////////////////////////////////////////////////
/**
*
* TODO add class documentation here
*
* @author <a href="mailto:name@deegree.org">Andreas Poth</a>
* @author last edited by: $Author$
*
* @version $Revision$, $Date$
*/
public class Renderer implements Callable<Object> {
/*
* (non-Javadoc)
*
* @see java.util.concurrent.Callable#call()
*/
public Object call()
throws Exception {
forceRepaint = false;
// create a new image if image is null or size of the map model has changed
layerImage = new BufferedImage( getWidth(), getHeight(), BufferedImage.TYPE_INT_ARGB );
// create graphics of the image to paint
Graphics2D layerGraphics = layerImage.createGraphics();
layerGraphics.setClip( 0, 0, getWidth(), getHeight() );
// clear the old image
layerGraphics.setBackground( new Color( 0, 0, 0, 0 ) );
layerGraphics.clearRect( 0, 0, layerImage.getWidth(), layerImage.getHeight() );
// draw layer
layerPane.paint( layerGraphics );
layerGraphics.dispose();
repaint();
return null;
}
}
}