/*
* This is part of Geomajas, a GIS framework, http://www.geomajas.org/.
*
* Copyright 2008-2011 Geosparc nv, http://www.geosparc.com/, Belgium.
*
* The program is available in open source according to the GNU Affero
* General Public License. All contributions in this program are covered
* by the Geomajas Contributors License Agreement. For full licensing
* details, see LICENSE.txt in the project root.
*/
package org.geomajas.example.gwt.client.samples.mapwidget;
import org.geomajas.example.gwt.client.samples.base.SamplePanel;
import org.geomajas.example.gwt.client.samples.base.SamplePanelFactory;
import org.geomajas.example.gwt.client.samples.i18n.I18nProvider;
import org.geomajas.gwt.client.controller.PanController;
import org.geomajas.gwt.client.map.layer.RasterLayer;
import org.geomajas.gwt.client.widget.MapWidget;
import com.smartgwt.client.widgets.Canvas;
import com.smartgwt.client.widgets.Slider;
import com.smartgwt.client.widgets.events.ValueChangedEvent;
import com.smartgwt.client.widgets.events.ValueChangedHandler;
import com.smartgwt.client.widgets.layout.VLayout;
/**
* Sample that shows the difference in rendering in screen space versus world space.
*
* @author Pieter De Graef
*/
public class LayerOpacitySample extends SamplePanel {
public static final String TITLE = "LayerOpacity";
public static final SamplePanelFactory FACTORY = new SamplePanelFactory() {
public SamplePanel createPanel() {
return new LayerOpacitySample();
}
};
public Canvas getViewPanel() {
VLayout layout = new VLayout();
layout.setWidth100();
layout.setHeight100();
layout.setMembersMargin(10);
// Create map with OSM layer, and add a PanController to it:
VLayout mapLayout = new VLayout();
mapLayout.setShowEdges(true);
mapLayout.setHeight("60%");
final MapWidget map = new MapWidget("mapOsm", "gwt-samples");
map.setController(new PanController(map));
mapLayout.addMember(map);
VLayout opacityLayout = new VLayout();
Slider slider = new Slider("Opacity");
slider.setWidth(300);
slider.setVertical(false);
slider.setMinValue(0);
slider.setMaxValue(100);
slider.setNumValues(101);
slider.setValue(100);
slider.addValueChangedHandler(new ValueChangedHandler() {
public void onValueChanged(ValueChangedEvent event) {
int intValue = event.getValue();
double value = 0;
if (intValue != 0) {
value = (double) intValue / (double) 100;
}
RasterLayer layer = (RasterLayer) map.getMapModel().getLayer("clientLayerOsm");
if (layer != null) {
layer.setOpacity(value);
}
}
});
opacityLayout.addMember(slider);
// Place both in the layout:
layout.addMember(mapLayout);
layout.addMember(opacityLayout);
return layout;
}
public String getDescription() {
return I18nProvider.getSampleMessages().layerOpacityDescription();
}
public String getSourceFileName() {
return "classpath:org/geomajas/example/gwt/client/samples/mapwidget/LayerOpacitySample.txt";
}
public String[] getConfigurationFiles() {
return new String[] { "WEB-INF/layerOsm.xml",
"WEB-INF/mapOsm.xml" };
}
public String ensureUserLoggedIn() {
return "luc";
}
}