jkfutilities.java

来自「主要是对串口驱动的的一些控制源码！！！ 在下载javacomm20-win32」· Java 代码 · 共 93 行

/**
 * $Log: JKFUtilities.java,v $
 * Revision 1.1  2003/01/17 15:57:15  mwulff
 * initial version
 *
 */
package de.fhm.jkf.utils.cl;

import java.awt.Component;
import java.awt.Dimension;
import java.awt.GraphicsEnvironment;
import java.awt.Rectangle;

/**
 * <br><br><center><table border="1" width="80%"><hr>
 * <strong><a href="http://jkf.sourceforge.net">The JKF Project</a></strong>
 * <p>
 * Copyright (C) 2002 by Marten Wulff
 * <p>
 * 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.
 * <p>
 * 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.
 * <p>
 * You should have received a copy of the <a href="http://www.gnu.org/copyleft/lesser.html">
 * GNU Lesser General Public License</a> along with this library; if not, write to
 * the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston,
 * MA  02111-1307  USA
 * <hr></table></center>
 * 
 * @author		marten wulff
 * @version 	1.0
 */
public class JKFUtilities {

	public static void centerComponent(Component parent, Component comp) {

		int x, y;
		Rectangle parentBounds = getParentBounds(parent, comp);
		Dimension compSize = comp.getSize();

		// Place the component so its center is the same
		// as the center of the bounding rectangle
		x = parentBounds.x + ((parentBounds.width / 2) - (compSize.width / 2));
		y =
			parentBounds.y
				+ ((parentBounds.height / 2) - (compSize.height / 2));
		comp.setLocation(x, y);
	}

	public static void lowerLeftComponent(Component parent, Component comp) {
		int x, y;
		Rectangle parentBounds = getParentBounds(parent, comp);
		Dimension compSize = comp.getSize();

		x = parentBounds.x;
		y = parentBounds.y + parentBounds.height - compSize.height;
		comp.setLocation(x, y);
	}

	private static Rectangle getParentBounds(
		Component parent,
		Component comp) {
		Rectangle parentBounds = null;
		Dimension compSize = comp.getSize();

		// If Container is null or smaller than the component
		// then our bounding rectangle is the
		// whole screen
		if ((parent == null)
			|| (parent.getBounds().width < compSize.width)
			|| (parent.getBounds().height < compSize.height)) {

			parentBounds =
				GraphicsEnvironment
					.getLocalGraphicsEnvironment()
					.getMaximumWindowBounds();
			parentBounds.setLocation(0, 0);
		} // Else our bounding rectangle is the Container
		else {
			parentBounds = parent.getBounds();
		}

		return parentBounds;

	}
}