Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
/* 
 * Copyright 2003,2004,2005 Colin Crist
 *
 * 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.
 * 
 */

import java.awt.Component;
import java.awt.Container;
import java.awt.Insets;
import java.awt.Rectangle;

import javax.swing.JComponent;

import javax.swing.JViewport;

public class Main {
    private static final Insets EMPTY_INSETS = new Insets(0, 0, 0, 0);

    public static void centerVertically(JComponent c, Rectangle r, boolean withInsets) {
        centerVertically(c, r.y, r.y + r.height, withInsets);
    }

    public static void centerVertically(JComponent c, int from, int to, boolean withInsets) {
        Rectangle bounds = c.getBounds();
        Insets i = withInsets ? EMPTY_INSETS : c.getInsets();
        bounds.x = i.left;
        bounds.y = i.top;
        bounds.width -= i.left + i.right;
        bounds.height -= i.top + i.bottom;

        Rectangle visible = c.getVisibleRect();

        visible.y = from - (visible.height + from - to) / 2;

        if (visible.y < bounds.y)
            visible.y = bounds.y;

        if (visible.y + visible.height > bounds.y + bounds.height)
            visible.y = bounds.y + bounds.height - visible.height;

        c.scrollRectToVisible(visible);
    }

    public static void scrollRectToVisible(Component component, Rectangle aRect) {
        Container parent;
        int dx = component.getX(), dy = component.getY();

        for (parent = component.getParent(); parent != null
                && (!(parent instanceof JViewport) || (((JViewport) parent)
                        .getClientProperty("HierarchicalTable.mainViewport") == null)); parent = parent
                                .getParent()) {
            Rectangle bounds = parent.getBounds();

            dx += bounds.x;
            dy += bounds.y;
        }

        if (parent != null) {
            aRect.x += dx;
            aRect.y += dy;

            ((JComponent) parent).scrollRectToVisible(aRect);
            aRect.x -= dx;
            aRect.y -= dy;
        }
    }
}