Java JViewport synchronizeView(final JViewport masterViewport, final JViewport slaveViewport, final int orientation)

Description

synchronize View

License

Apache License

Declaration

public static void synchronizeView(final JViewport masterViewport, final JViewport slaveViewport,
        final int orientation) 

Method Source Code

//package com.java2s;
/*/*from  w  w  w  .j a  va 2 s  .c o m*/
 * K-scope
 * Copyright 2012-2013 RIKEN, Japan
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * 
 * Version to work with SSHconnect.
 */

import java.awt.Point;

import javax.swing.JViewport;

import javax.swing.SwingConstants;
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;

public class Main {

    public static void synchronizeView(final JViewport masterViewport, final JViewport slaveViewport,
            final int orientation) {
        final ChangeListener c1 = new ChangeListener() {
            public void stateChanged(ChangeEvent e) {
                if (masterViewport.getView() == null || slaveViewport.getView() == null) {
                    return;
                }
                if (orientation == SwingConstants.HORIZONTAL) {
                    Point v1 = masterViewport.getViewPosition();
                    Point v2 = slaveViewport.getViewPosition();
                    if (v1.x != v2.x) {
                        slaveViewport.setViewPosition(new Point(v1.x, v2.y));
                    }
                } else if (orientation == SwingConstants.VERTICAL) {
                    Point v1 = masterViewport.getViewPosition();
                    Point v2 = slaveViewport.getViewPosition();
                    if (v1.y != v2.y) {
                        slaveViewport.setViewPosition(new Point(v2.x, v1.y));
                    }
                }
            }
        };

        masterViewport.addChangeListener(c1);
    }
}

Related

1. canHScroll(JViewport viewport)
2. canScroll(JViewport viewport)
3. fixScrollRendering(JViewport viewport)
4. setViewPortPosition(JViewport viewport, Rectangle position)