Using Slider to control the width and sharpness of a shadow (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.Label;
import com.smartgwt.client.widgets.Slider;
import com.smartgwt.client.widgets.events.DrawEvent;
import com.smartgwt.client.widgets.events.DrawHandler;
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() {
Canvas canvas = new Canvas();
final Label label = new Label("EXAMPLE_TEXT");
label.setWidth(250);
label.setPadding(10);
label.setLeft(160);
label.setTop(20);
label.setBackgroundColor("white");
label.setBorder("1px solid #c0c0c0");
label.setCanDragReposition(true);
label.setShowShadow(true);
label.setShadowSoftness(10);
label.setShadowOffset(5);
label.setKeepInParentRect(true);
final Slider softness = new Slider("Softness");
softness.setMinValue(1);
softness.setMaxValue(10);
softness.setNumValues(11);
softness.setShowRange(false);
softness.setLabelWidth(20);
softness.setValue(10);
softness.addDrawHandler(new DrawHandler() {
public void onDraw(DrawEvent event) {
softness.addValueChangedHandler(new ValueChangedHandler() {
public void onValueChanged(ValueChangedEvent event) {
label.setShadowSoftness(event.getValue());
label.updateShadow();
}
});
}
});
final Slider offset = new Slider("Offset");
offset.setMinValue(0);
offset.setMaxValue(20);
offset.setNumValues(21);
offset.setShowRange(false);
offset.setLabelWidth(20);
offset.setLeft(60);
offset.setValue(5);
offset.addDrawHandler(new DrawHandler() {
public void onDraw(DrawEvent event) {
offset.addValueChangedHandler(new ValueChangedHandler() {
public void onValueChanged(ValueChangedEvent event) {
label.setShadowOffset(event.getValue());
label.updateShadow();
}
});
}
});
canvas.addChild(softness);
canvas.addChild(offset);
canvas.addChild(label);
return canvas;
}
}
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