我有一个使用'可平移'的JComponent显示大数据的Java Swing应用程序。当用户移动鼠标滚轮时，我监听这些事件，并从滚动量更新JComponent的内容。
我想根据用户是
根据不同的行为方式，我该如何检测用户使用鼠标滚轮还是触摸板生成滚动事件？我依赖于java 1.6 swing，所以无法转到javaFX。
问题背后的故事：我只想在用户使用鼠标滚轮时添加一个酷炫的惯性感。但是，在MacOSX上，触摸板具有自己内置的惯性效果。因此，我想决定是否应该生成惯性运动。
Java Swing是一种旧的技术，它支持传统的鼠标滚轮旋转事件。
当您使用旧式滚轮鼠标或轨迹板时，它会读取硬件滚轮的旋转。
当您使用现代激光鼠标时，鼠标移动将被转换为旋转运动。
当您使用像现代Mac笔记本电脑中那样的触摸板时，滚动手势将被转换为旋转运动，单击和双击将被视为左右键（基于操作系统鼠标设置）。
您可以使用库详细检查输入设备，如果您的鼠标或轨迹板通过USB连接到计算机，则可以尝试使用J-USB library。
至于内部硬件，您首先必须确定操作系统的类型，然后可以获取有关Java中系统和硬件的信息。
最后，如果您的应用程序与用户交互，建议询问用户他们正在使用哪种类型的鼠标，并将其存储在配置文件或其他地方。
对于MacOS，您可以在Java中获取所有触摸板事件。我自己也搜索了一段时间并回答了自己的问题。如果有人开始走同样的路，请留下这里。
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。这种能力使得应用程序只需为组件管理来自鼠标指针的所有类型事件拥有一个适配器类实例。
mouseWheelMoved(MouseWheelEvent) //Called when the mouse wheel is rotated.
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
尝试这段代码
MetaDown 用于右键单击
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);
}
}
}
还可以尝试这个：
通过 SwingUtilities 中的以下三种方法，您可以确定哪个鼠标按钮被按下：
isLeftMouseButton
isMiddleMouseButton
isRightMouseButton