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/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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.
*/
/**
* @author Michael Danilov
* @version $Revision$
*/
package java.awt.event;
import java.awt.Component;
/**
* This class is not supported in Android 1.0. It is merely provided to maintain
* interface compatibility with desktop Java implementations.
*
* @since Android 1.0
*/
public class MouseWheelEvent extends MouseEvent {
private static final long serialVersionUID = -9187413581993563929L;
public static final int WHEEL_UNIT_SCROLL = 0;
public static final int WHEEL_BLOCK_SCROLL = 1;
private int wheelRotation;
private int scrollAmount;
private int scrollType;
public MouseWheelEvent(Component source, int id, long when, int modifiers,
int x, int y, int clickCount, boolean popupTrigger, int scrollType,
int scrollAmount, int wheelRotation) {
super(source, id, when, modifiers, x, y, clickCount, popupTrigger);
this.scrollType = scrollType;
this.scrollAmount = scrollAmount;
this.wheelRotation = wheelRotation;
}
public int getScrollAmount() {
return scrollAmount;
}
public int getScrollType() {
return scrollType;
}
public int getWheelRotation() {
return wheelRotation;
}
public int getUnitsToScroll() {
return (scrollAmount * wheelRotation);
}
@Override
public String paramString() {
/* The format is based on 1.5 release behavior
* which can be revealed by the following code:
*
* MouseWheelEvent e = new MouseWheelEvent(new Component(){},
* MouseWheelEvent.MOUSE_WHEEL, 0,
* MouseEvent.BUTTON1_DOWN_MASK|MouseEvent.CTRL_DOWN_MASK,
* 10, 20, 1, false, MouseWheelEvent.WHEEL_UNIT_SCROLL,
* 1, 3);
* System.out.println(e);
*/
String paramString = super.paramString();
String typeString = null;
switch (scrollType) {
case WHEEL_UNIT_SCROLL:
typeString = "WHEEL_UNIT_SCROLL"; //$NON-NLS-1$
break;
case WHEEL_BLOCK_SCROLL:
typeString = "WHEEL_BLOCK_SCROLL"; //$NON-NLS-1$
break;
default:
typeString = "unknown type"; //$NON-NLS-1$
}
paramString += ",scrollType=" + typeString + //$NON-NLS-1$
",scrollAmount=" + scrollAmount + //$NON-NLS-1$
",wheelRotation=" + wheelRotation; //$NON-NLS-1$
return paramString;
}
}
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