如何检测用户在Java swing中使用触控板而不是鼠标?

我有一个Java swing应用程序,它使用’泛’JComponent来显示大数据。 当用户移动鼠标滚轮时,我会听这些事件,并从滚动量更新JComponent的内容。

我想根据用户是否有不同的行为

  • 使用经典鼠标
  • 使用触摸板,可以在现代Mac笔记本电脑上找到。

我怎么能检测到用户正在使用鼠标滚轮和触控板来生成滚动事件? 我依靠java 1.6 swing,si我不能去javaFX。

问题背后的故事:我只想在用户使用鼠标滚轮时为滚动事件添加一种很酷的惯性感。 但是当然,在MacOSX上,触控板内置了自己的惯性。 所以我想决定是否应该产生惯性运动。

Java Swing是一项古老的技术,它支持传统的鼠标滚轮旋转事件。

当您使用旧的滚轮鼠标或滚轮履带板时,它将读取硬件滚轮的旋转。

当您使用现代激光鼠标时,鼠标移动将转换为旋转运动。

当您使用现代Mac笔记本电脑中的触控式触控板时,滚动手势将转换为旋转动作,单击和双击作为左右键(基于OS鼠标垫配置)。

您可以使用库来详细检查输入设备,如果您的鼠标或触控板通过USB连接到您的计算机,您可以尝试使用J-USB库 。

至于内部硬件,首先必须确定操作系统的类型,并在此基础上获取有关Java系统和硬件的信息 。

最后,如果您的应用程序与用户交互,我建议询问用户他们使用的鼠标类型,并将其存储在配置文件中。

试试这个代码

  1. MetaDown用于右键单击

  2. AltDown用于鼠标滚轮

public class Exp extends JFrame { private String string; private JLabel l; public Exp() { super("Title"); l = new JLabel("Status"); add(l, BorderLayout.SOUTH); addMouseListener(new MouseClass()); } private class MouseClass extends MouseAdapter { public void mouseClicked(MouseEvent e) { string = String.format("Clicked %d Times", e.getClickCount()); if(e.isMetaDown()) string += " With Right Mouse Button"; else if(e.isAltDown()) string += " With Centre Mouse Button"; else string += " With Left Mouse Button"; l.setText(string); } } } 

也试试这个:

您可以通过SwingUtilities中的这三种方法确定按下哪个鼠标按钮:

isLeftMouseButton

isMiddleMouseButton

isRightMouseButton

鼠标滚轮监听器API

虽然MouseWheelListener只有一个方法,但它有相应的适配器类 – MouseAdapter 。 此function使应用程序只有一个适配器类实例,以便组件管理鼠标指针中的所有类型的事件。

 mouseWheelMoved(MouseWheelEvent) //Called when the mouse wheel is rotated. 

以下代码段与鼠标滚轮事件处理有关:

 import java.awt.BorderLayout; import java.awt.Color; import java.awt.Dimension; import java.awt.event.MouseWheelEvent; import java.awt.event.MouseWheelListener; import javax.swing.*; public class MouseWheelEventDemo extends JPanel implements MouseWheelListener { JTextArea textArea; JScrollPane scrollPane; static final String NEWLINE = System.getProperty("line.separator"); public static void main(String[] args) { /* Use an appropriate Look and Feel */ try { //UIManager.setLookAndFeel("com.sun.java.swing.plaf.windows.WindowsLookAndFeel"); //UIManager.setLookAndFeel("com.sun.java.swing.plaf.gtk.GTKLookAndFeel"); UIManager.setLookAndFeel("javax.swing.plaf.metal.MetalLookAndFeel"); } catch (UnsupportedLookAndFeelException ex) { ex.printStackTrace(); } catch (IllegalAccessException ex) { ex.printStackTrace(); } catch (InstantiationException ex) { ex.printStackTrace(); } catch (ClassNotFoundException ex) { ex.printStackTrace(); } /* Turn off metal's use of bold fonts */ UIManager.put("swing.boldMetal", Boolean.FALSE); //Schedule a job for the event dispatch thread: //creating and showing this application's GUI. javax.swing.SwingUtilities.invokeLater(new Runnable() { public void run() { createAndShowGUI(); } }); } /** * Create the GUI and show it. For thread safety, * this method should be invoked from the * event dispatch thread. */ private static void createAndShowGUI() { //Create and set up the window. JFrame frame = new JFrame("MouseWheelEventDemo"); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); //Create and set up the content pane. JComponent newContentPane = new MouseWheelEventDemo(); newContentPane.setOpaque(true); //content panes must be opaque frame.setContentPane(newContentPane); //Display the window. frame.pack(); frame.setVisible(true); } public MouseWheelEventDemo() { super(new BorderLayout()); textArea = new JTextArea(); textArea.setEditable(false); scrollPane = new JScrollPane(textArea); scrollPane.setVerticalScrollBarPolicy( JScrollPane.VERTICAL_SCROLLBAR_ALWAYS); scrollPane.setPreferredSize(new Dimension(400, 250)); add(scrollPane, BorderLayout.CENTER); textArea.append("This text area displays information " + "about its mouse wheel events." + NEWLINE); //Register for mouse-wheel events on the text area. textArea.addMouseWheelListener(this); setPreferredSize(new Dimension(450, 350)); setBorder(BorderFactory.createEmptyBorder(20,20,20,20)); } //Append to the text area and make sure the new text is visible. void eventOutput(String eventDescription, MouseWheelEvent e) { textArea.append(e.getComponent().getClass().getName() + ": " + eventDescription); textArea.setCaretPosition(textArea.getDocument().getLength()); } public void mouseWheelMoved(MouseWheelEvent e) { String message; int notches = e.getWheelRotation(); if (notches < 0) { message = "Mouse wheel moved UP " + -notches + " notch(es)" + NEWLINE; } else { message = "Mouse wheel moved DOWN " + notches + " notch(es)" + NEWLINE; } if (e.getScrollType() == MouseWheelEvent.WHEEL_UNIT_SCROLL) { message += " Scroll type: WHEEL_UNIT_SCROLL" + NEWLINE; message += " Scroll amount: " + e.getScrollAmount() + " unit increments per notch" + NEWLINE; message += " Units to scroll: " + e.getUnitsToScroll() + " unit increments" + NEWLINE; message += " Vertical unit increment: " + scrollPane.getVerticalScrollBar().getUnitIncrement(1) + " pixels" + NEWLINE; } else { //scroll type == MouseWheelEvent.WHEEL_BLOCK_SCROLL message += " Scroll type: WHEEL_BLOCK_SCROLL" + NEWLINE; message += " Vertical block increment: " + scrollPane.getVerticalScrollBar().getBlockIncrement(1) + " pixels" + NEWLINE; } eventOutput(message, e); } } 

对于使用鼠标滚轮的单位增量的系统,MouseWheelEventDemo的输出可能如下所示:

 javax.swing.JTextArea: Mouse wheel moved UP 1 notch(es) Scroll type: WHEEL_UNIT_SCROLL Scroll amount: 3 unit increments per notch Units to scroll: -3 unit increments Vertical unit increment: 16 pixels