/*
* @(#)ZoomTool.java
*
* Project: JHotdraw - a GUI framework for technical drawings
* http://www.jhotdraw.org
* http://jhotdraw.sourceforge.net
* Copyright: � by the original author(s) and all contributors
* License: Lesser GNU Public License (LGPL)
* http://www.opensource.org/licenses/lgpl-license.html
*/
package org.jhotdraw.contrib.zoom;
import org.jhotdraw.framework.DrawingEditor;
import org.jhotdraw.framework.Tool;
import org.jhotdraw.standard.AbstractTool;
import java.awt.event.InputEvent;
import java.awt.event.MouseEvent;
/**
* @author Andre Spiegel <spiegel@gnu.org>
* @version <$CURRENT_VERSION$>
*/
public class ZoomTool extends AbstractTool {
private Tool child;
public ZoomTool(DrawingEditor editor) {
super(editor);
}
public void mouseDown(MouseEvent e, int x, int y) {
super.mouseDown(e,x,y);
// Added handling for SHIFTed and CTRLed BUTTON3_MASK so that normal
// BUTTON3_MASK does zoomOut, SHIFTed BUTTON3_MASK does zoomIn
// and CTRLed BUTTON3_MASK does deZoom
if ((e.getModifiers() & InputEvent.BUTTON1_MASK) != 0) {
if (child != null) {
return;
}
view().freezeView();
child = new ZoomAreaTracker(editor());
child.mouseDown(e, x, y);
}
else if ((e.getModifiers() & InputEvent.BUTTON2_MASK) != 0) {
((ZoomDrawingView) view()).deZoom(x, y);
}
else if ((e.getModifiers() & InputEvent.BUTTON3_MASK) != 0) {
if ((e.getModifiers() & InputEvent.SHIFT_MASK) != 0) {
((ZoomDrawingView)view()).zoomIn(x, y);
}
else if ((e.getModifiers() & InputEvent.CTRL_MASK) != 0) {
((ZoomDrawingView) view()).deZoom(x, y);
}
else {
((ZoomDrawingView)view()).zoomOut(x, y);
}
}
}
public void mouseDrag(MouseEvent e, int x, int y) {
if (child != null) {
child.mouseDrag(e, x, y);
}
}
public void mouseUp(MouseEvent e, int x, int y) {
if (child != null) {
view().unfreezeView();
child.mouseUp(e, x, y);
}
child = null;
}
}