Java JScrollPane updateScrollPane(JScrollPane pane, int hDiff, int vDiff)

Description

update Scroll Pane

License

Open Source License

Declaration

public static void updateScrollPane(JScrollPane pane, int hDiff, int vDiff) 

Method Source Code

//package com.java2s;
/*******************************************************************************
 * Copyright (c) 2009-2015 The Last Check, LLC, All Rights Reserved
 *
 * 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./*from  www .  j  a v a2s  . com*/
 ******************************************************************************/

import javax.swing.JScrollBar;
import javax.swing.JScrollPane;

public class Main {
    public static void updateScrollPane(JScrollPane pane, int hDiff, int vDiff) {
        JScrollBar hBar = pane.getHorizontalScrollBar();
        JScrollBar vBar = pane.getVerticalScrollBar();

        int hmax = hBar.getMaximum();
        int hmin = hBar.getMinimum();
        int hval = hBar.getValue();
        int hext = hBar.getVisibleAmount();

        int vmax = vBar.getMaximum();
        int vmin = vBar.getMinimum();
        int vval = vBar.getValue();
        int vext = vBar.getVisibleAmount();

        hval += hDiff;
        vval += vDiff;

        if ((hval < (hmax - hext)) && (hval > hmin)) {
            hBar.setValue(hval);
        }
        if ((vval < (vmax - vext)) && (vval > vmin)) {
            vBar.setValue(vval);
        }
    }
}

Related

1. setScrollpane(JScrollPane scrollpane)
2. setScrollPaneSize(JScrollPane scrollPane, int rows, int columns)
3. setUnitIncrement(JScrollPane scroller)
4. show(JComponent comp, String windowName, boolean hasScrollBars, int x, int y, int width, int height)
5. toScrollPane(Component component, Point componentPoint, Point resultPoint)