1 /* 2 * Copyright (c) 2008, 2013, Oracle and/or its affiliates. 3 * All rights reserved. Use is subject to license terms. 4 * 5 * This file is available and licensed under the following license: 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 11 * - Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * - Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in 15 * the documentation and/or other materials provided with the distribution. 16 * - Neither the name of Oracle Corporation nor the names of its 17 * contributors may be used to endorse or promote products derived 18 * from this software without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 21 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 23 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 24 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 25 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 26 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 27 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 28 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 29 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 30 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 31 */ 32 package com.javafx.experiments.scheduleapp.control; 33 34 import javafx.scene.control.skin.ScrollPaneSkin; 35 import java.lang.reflect.Field; 36 import javafx.event.EventHandler; 37 import javafx.scene.control.ScrollPane; 38 import javafx.scene.input.MouseEvent; 39 import javafx.scene.input.ScrollEvent; 40 41 public class ScrollPaneSkin3 extends ScrollPaneSkin { 42 private static final String os = System.getProperty("os.name"); 43 public static final boolean IS_BEAGLE = "Linux".equals(os); 44 public ScrollPaneSkin3(final ScrollPane scrollpane) { 45 super(scrollpane); 46 if (IS_BEAGLE) { 47 scrollpane.addEventFilter(MouseEvent.ANY, new EventHandler<MouseEvent>() { 48 public void handle(MouseEvent event) { 49 if (event.getEventType() == MouseEvent.MOUSE_DRAGGED) { 50 event.consume(); 51 } 52 scrollpane.setVbarPolicy(ScrollPane.ScrollBarPolicy.NEVER); 53 } 54 }); 55 scrollpane.addEventFilter(ScrollEvent.SCROLL, new EventHandler<ScrollEvent>() { 56 public void handle(ScrollEvent event) { 57 if (vsb.getVisibleAmount() < vsb.getMax()) { 58 double nodeHeight = getNodeHeight(); 59 double vRange = getSkinnable().getVmax()-getSkinnable().getVmin(); 60 double vPixelValue; 61 if (nodeHeight > 0.0) { 62 vPixelValue = vRange / nodeHeight; 63 } 64 else { 65 vPixelValue = 0.0; 66 } 67 double newValue = vsb.getValue()+(-event.getDeltaY())*vPixelValue; 68 if (true /*!PlatformUtil.isEmbedded()*/) { 69 if ((event.getDeltaY() > 0.0 && vsb.getValue() > vsb.getMin()) || 70 (event.getDeltaY() < 0.0 && vsb.getValue() < vsb.getMax())) { 71 vsb.setValue(newValue); 72 event.consume(); 73 } 74 } 75 // eat all scroll events to avoid white space scrolling past start or end 76 event.consume(); 77 } 78 } 79 }); 80 } 81 } 82 double getNodeHeight() { 83 try { 84 Field field = ScrollPaneSkin.class.getDeclaredField("nodeHeight"); 85 field.setAccessible(true); 86 return field.getDouble(this); 87 } catch (NoSuchFieldException e) { 88 // TODO Auto-generated catch block 89 e.printStackTrace(); 90 } catch (SecurityException e) { 91 // TODO Auto-generated catch block 92 e.printStackTrace(); 93 } catch (IllegalArgumentException e) { 94 // TODO Auto-generated catch block 95 e.printStackTrace(); 96 } catch (IllegalAccessException e) { 97 // TODO Auto-generated catch block 98 e.printStackTrace(); 99 } 100 return 0; 101 } 102 }