Drag the slider to change opacity (Smart GWT)
/*
* SmartGWT (GWT for SmartClient)
* Copyright 2008 and beyond, Isomorphic Software, Inc.
*
* SmartGWT is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License version 3
* as published by the Free Software Foundation. SmartGWT is also
* available under typical commercial license terms - see
* http://smartclient.com/license
* This software 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.
*/
package com.smartgwt.sample.showcase.client;
import com.google.gwt.core.client.EntryPoint;
import com.google.gwt.user.client.ui.RootPanel;
import com.smartgwt.client.widgets.Canvas;
import com.smartgwt.client.widgets.Img;
import com.smartgwt.client.widgets.Slider;
import com.smartgwt.client.widgets.events.ValueChangedEvent;
import com.smartgwt.client.widgets.events.ValueChangedHandler;
public class Showcase implements EntryPoint {
public void onModuleLoad() {
RootPanel.get().add(getViewPanel());
}
public Canvas getViewPanel() {
final Img eyesImg = new Img("other/eyes.jpg", 360, 188);
eyesImg.setShowEdges(true);
Slider slider = new Slider("");
slider.setMinValue(0);
slider.setMaxValue(100);
slider.setShowRange(false);
slider.setShowTitle(false);
slider.setVertical(false);
slider.setLeft(80);
slider.setTop(200);
slider.setValue(100);
slider.addValueChangedHandler(new ValueChangedHandler() {
public void onValueChanged(ValueChangedEvent event) {
eyesImg.setOpacity(event.getValue());
}
});
Canvas canvas = new Canvas();
canvas.addChild(eyesImg);
canvas.addChild(slider);
return canvas;
}
}
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