content: /*
   * This library is part of OpenCms -
   * the Open Source Content Management System
   *
   * Copyright (c) Alkacon Software GmbH & Co. KG (https://www.alkacon.com)
   *
   * This library is free software; you can redistribute it and/or
   * modify it under the terms of the GNU Lesser General Public
   * License as published by the Free Software Foundation; either
   * version 2.1 of the License, or (at your option) any later version.
   *
   * This library 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.
   *
   * For further information about Alkacon Software, please see the
   * company website: https://www.alkacon.com
   *
   * For further information about OpenCms, please see the
   * project website: https://www.opencms.org
   *
   * You should have received a copy of the GNU Lesser General Public
   * License along with this library; if not, write to the Free Software
   * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
   */
  
  package org.opencms.gwt.client.util;
  
  import com.google.gwt.dom.client.Element;
  import com.google.gwt.dom.client.Style.Unit;
  import com.google.gwt.user.client.Command;
  
  /**
   * Move animation. Moving the given element from it's start to it's end position
   * and executing the given call-back on complete.<p>
   *
   * @since 8.0.0
   */
  public class CmsMoveAnimation extends A_CmsAnimation {
  
      /** The element. */
      private Element m_element;
  
      /** The end left. */
      private int m_endLeft;
  
      /** The end top. */
      private int m_endTop;
  
      /** The start left. */
      private int m_startLeft;
  
      /** The start top. */
      private int m_startTop;
  
      /**
       * Constructor. Setting the element to animate, it's start and end position.<p>
       *
       * @param element the element
       * @param startTop the start top
       * @param startLeft the start left
       * @param endTop the end top
       * @param endLeft the end left
       * @param callback the call-back to execute on complete
       */
      public CmsMoveAnimation(Element element, int startTop, int startLeft, int endTop, int endLeft, Command callback) {
  
          super(callback);
          m_element = element;
          m_startTop = startTop;
          m_startLeft = startLeft;
          m_endTop = endTop;
          m_endLeft = endLeft;
      }
  
      /**
       * @see com.google.gwt.animation.client.Animation#onUpdate(double)
       */
      @Override
      protected void onUpdate(double progress) {
  
          progress = progress * progress;
          double newTop = m_startTop + ((m_endTop - m_startTop) * progress);
          double newLeft = m_startLeft + ((m_endLeft - m_startLeft) * progress);
          m_element.getStyle().setTop(newTop, Unit.PX);
          m_element.getStyle().setLeft(newLeft, Unit.PX);
      }
  }
  