Application: gvSIG desktop » gvSIG raster

package org.gvsig.fmap.mapcontext.raster.swing.impl.previewer;

import java.awt.Dimension;

import java.awt.Rectangle;

import javax.swing.JComponent;

import org.cresques.cts.IProjection;

import org.slf4j.Logger;

import org.slf4j.LoggerFactory;

import org.gvsig.fmap.dal.exception.ReadException;

import org.gvsig.fmap.mapcontext.MapContext;

import org.gvsig.fmap.mapcontext.MapContextLocator;

import org.gvsig.fmap.mapcontext.layers.FLayer;

import org.gvsig.fmap.mapcontext.layers.FLayers;

import org.gvsig.fmap.mapcontext.layers.FLyrDefault;

import org.gvsig.fmap.mapcontext.raster.swing.previewer.OneLayerPreviewer;

import org.gvsig.fmap.mapcontext.rendering.legend.events.LegendChangedEvent;

import org.gvsig.fmap.mapcontext.rendering.legend.events.listeners.LegendListener;

import org.gvsig.fmap.mapcontrol.MapControl;

import org.gvsig.fmap.mapcontrol.MapControlCreationException;

import org.gvsig.fmap.mapcontrol.MapControlLocator;

import org.gvsig.fmap.mapcontrol.tools.PanListenerImpl;

import org.gvsig.fmap.mapcontrol.tools.ZoomInListenerImpl;

import org.gvsig.fmap.mapcontrol.tools.ZoomOutListenerImpl;

import org.gvsig.fmap.mapcontrol.tools.Behavior.Behavior;

import org.gvsig.fmap.mapcontrol.tools.Behavior.MouseWheelBehavior;

import org.gvsig.fmap.mapcontrol.tools.Behavior.MoveBehavior;

import org.gvsig.fmap.mapcontrol.tools.Behavior.PointBehavior;

import org.gvsig.fmap.mapcontrol.tools.Behavior.RectangleBehavior;

import org.gvsig.fmap.mapcontrol.tools.Listeners.PanListener;

import org.gvsig.tools.locator.LocatorException;

/**

 * @author fdiaz

 *

 */

public class DefaultOneLayerPreviewer implements OneLayerPreviewer, LegendListener {

    private static final Logger LOG = LoggerFactory.getLogger(DefaultOneLayerPreviewer.class);

    private MapControl mapControl;

    private FLayer layer;

    private boolean initialized;

    public DefaultOneLayerPreviewer() {

        try {

            MapContext mapContext = MapContextLocator.getMapContextManager().createMapContext();

            this.mapControl = MapControlLocator.getMapControlManager().createJMapControlPanel(mapContext);

        } catch (MapControlCreationException | LocatorException e) {

            LOG.warn("Can't create mapControl to preview.", e);

        }

        this.mapControl.setPreferredSize(new Dimension(300, 200));

        initialized = false;

    }

    @Override

    public JComponent asJComponent() {

        return mapControl;

    }

    @Override

    public void setProjection(IProjection projection) {

        MapContext mapContext = mapControl.getMapContext();

        mapContext.setProjection(projection);

    }

    @Override

    public void setLayer(FLayer layer) {

        MapContext mapContext = mapControl.getMapContext();

        if (mapContext.getProjection() == null) {

            setProjection(layer.getProjection());

        }

        FLayers layers = mapContext.getLayers();

        while (layers.size() > 0) {

            ((FLyrDefault)layers.get(0)).removeLegendListener(this);

            layers.remove(0);

        }

        layers.add(layer);

        this.layer = layer;

        ((FLyrDefault)this.layer).addLegendListener(this);

        init();

    }

    private void init(){

        try {

            mapControl.getViewPort().setEnvelope(layer.getFullEnvelope());

        } catch (ReadException e) {

            LOG.warn("Can't get the full envelope of the layer.", e);

        }

        if (!initialized) {

            // pan

            PanListener panListener = new PanListenerImpl(mapControl);

            mapControl.addBehavior("pan", new MoveBehavior(panListener, Behavior.BUTTON_LEFT));

            // Zoom out (pinchas y el mapa se centra y te muestra m?s).

            // No es dibujando un rect?ngulo, es solo pinchando.

            ZoomOutListenerImpl zoomOutListener = new ZoomOutListenerImpl(mapControl);

            mapControl.addBehavior("zoomOut", new PointBehavior(zoomOutListener));

         // Zoom por rect?ngulo

            ZoomInListenerImpl zoomInListener = new ZoomInListenerImpl(mapControl);

            mapControl.addBehavior("zoomIn", new Behavior[]{

                new RectangleBehavior(zoomInListener),

                new PointBehavior(zoomOutListener, Behavior.BUTTON_RIGHT)});

            mapControl.setTool("zoomIn");

            mapControl.addCombinedBehavior(new MouseWheelBehavior());

            mapControl.addCombinedBehavior(new MoveBehavior(panListener, Behavior.BUTTON_MIDDLE));

        }

        this.initialized = true;

    }

    @Override

    public void legendChanged(LegendChangedEvent e) {

//        mapControl.repaint();

        MapContext mapContext = mapControl.getMapContext();

      mapContext.invalidate();

      mapControl.paintImmediately(new Rectangle(mapControl.getSize()));

    }

}