Timer based animation (Smart GWT) : Animation « GWT « Java

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Java » GWT » AnimationScreenshots 
Timer based animation (Smart GWT)
Timer based animation (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.Timer;
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.events.ClickEvent;
import com.smartgwt.client.widgets.events.ClickHandler;
import com.smartgwt.client.widgets.layout.VLayout;

public class Showcase implements EntryPoint {

  public void onModuleLoad() {
    RootPanel.get().add(getViewPanel());
  }

  public Canvas getViewPanel() {
    VLayout layout = new VLayout();
    layout.setMembersMargin(10);
    layout.addChild(new OrbitImg());
    return layout;
  }

  public static class OrbitImg extends Img {
    public OrbitImg() {
      super("other/earth.png"4848);
      setTop(0);
      setLeft(100);
      addClickHandler(new ClickHandler() {
        public void onClick(ClickEvent event) {
          animateOrbit();
        }
      });
    }

    public void animateOrbit() {

      // TODO: isc.Animation.registerAnimation(this.animateOrbitStep, 2000,
      // null, this);

      new Timer() {
        private double ratio = 0;

        public void run() {
          animateOrbitStep(ratio);
          ratio += 0.01;
          if (ratio >= 1)
            cancel();
        }
      }.scheduleRepeating(20);

    }

    public void animateOrbitStep(double ratio) {
      double angle = (Math.PI * 2* ratio - (Math.PI / 2);
      moveTo((int) (Math.cos(angle100 100)(int) (Math.sin(angle100 100));
    }
  }

}

   
    
    
  
SmartGWT.zip( 9,880 k)
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