viewscalezoomin.java

来自「用JGraph编的软件」· Java 代码 · 共 61 行

/*
 * @(#)ViewScaleZoomIn.java	1.2 30.01.2003
 *
 * Copyright (C) 2003 sven.luzar
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 *
 */
package org.jgraph.pad.actions;

import java.awt.event.ActionEvent;

import org.jgraph.GPGraphpad;

/**
 * Zoom in (doubles the current scale)
 *
 * @author sven.luzar
 * @version 1.0
 *
 */
public class ViewScaleZoomIn extends AbstractActionDefault {

	/**
	 * Constructor for ViewScaleZoomIn.
	 * @param graphpad
	 * @param name
	 */
	public ViewScaleZoomIn(GPGraphpad graphpad) {
		super(graphpad);
	}

	/**
	 * @see java.awt.event.ActionListener#actionPerformed(ActionEvent)
	 */

		public void actionPerformed(ActionEvent e) {
			graphpad.getCurrentDocument() .setResizeAction(null);
			if (graphpad.getCurrentGraph() .getScale() < 8) {
				// "Zero Length String passed to TextLayout constructor"
				graphpad.getCurrentDocument() .
				setScale(graphpad.getCurrentGraph() .getScale() * 2);
				if (graphpad.getCurrentGraph() .getSelectionCell() != null)
					graphpad.getCurrentGraph() .scrollCellToVisible(graphpad.getCurrentGraph().getSelectionCell());
			}
		}

}