104 lines
3.2 KiB
Java
104 lines
3.2 KiB
Java
/*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The ASF licenses this file to You under the Apache License, Version 2.0
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* (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/**
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* @author Michael Danilov
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* @version $Revision$
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*/
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package java.awt.event;
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import java.awt.Component;
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/**
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* This class is not supported in Android 1.0. It is merely provided to maintain
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* interface compatibility with desktop Java implementations.
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*
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* @since Android 1.0
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*/
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public class MouseWheelEvent extends MouseEvent {
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private static final long serialVersionUID = -9187413581993563929L;
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public static final int WHEEL_UNIT_SCROLL = 0;
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public static final int WHEEL_BLOCK_SCROLL = 1;
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private int wheelRotation;
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private int scrollAmount;
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private int scrollType;
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public MouseWheelEvent(Component source, int id, long when, int modifiers,
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int x, int y, int clickCount, boolean popupTrigger, int scrollType,
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int scrollAmount, int wheelRotation) {
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super(source, id, when, modifiers, x, y, clickCount, popupTrigger);
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this.scrollType = scrollType;
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this.scrollAmount = scrollAmount;
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this.wheelRotation = wheelRotation;
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}
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public int getScrollAmount() {
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return scrollAmount;
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}
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public int getScrollType() {
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return scrollType;
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}
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public int getWheelRotation() {
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return wheelRotation;
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}
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public int getUnitsToScroll() {
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return (scrollAmount * wheelRotation);
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}
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@Override
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public String paramString() {
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/* The format is based on 1.5 release behavior
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* which can be revealed by the following code:
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*
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* MouseWheelEvent e = new MouseWheelEvent(new Component(){},
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* MouseWheelEvent.MOUSE_WHEEL, 0,
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* MouseEvent.BUTTON1_DOWN_MASK|MouseEvent.CTRL_DOWN_MASK,
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* 10, 20, 1, false, MouseWheelEvent.WHEEL_UNIT_SCROLL,
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* 1, 3);
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* System.out.println(e);
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*/
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String paramString = super.paramString();
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String typeString = null;
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switch (scrollType) {
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case WHEEL_UNIT_SCROLL:
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typeString = "WHEEL_UNIT_SCROLL"; //$NON-NLS-1$
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break;
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case WHEEL_BLOCK_SCROLL:
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typeString = "WHEEL_BLOCK_SCROLL"; //$NON-NLS-1$
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break;
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default:
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typeString = "unknown type"; //$NON-NLS-1$
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}
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paramString += ",scrollType=" + typeString + //$NON-NLS-1$
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",scrollAmount=" + scrollAmount + //$NON-NLS-1$
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",wheelRotation=" + wheelRotation; //$NON-NLS-1$
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return paramString;
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}
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}
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