如何检测用户在 Java swing 中使用的是触控板而不是鼠标?
How to detect the user is using the Trackpad and not the mouse in Java swing?
我有一个 Java swing 应用程序,它使用 'pan-able' JComponent 来显示大数据。当用户移动鼠标滚轮时,我会监听这些事件,并根据滚动量更新 JComponent 的内容。
我希望根据用户是否
有不同的行为
- 使用经典鼠标
- 使用触摸板,就像在现代 Mac 笔记本电脑上可以找到的那样。
我如何检测到用户是使用鼠标滚轮还是触控板来生成滚动事件?我靠 java 1.6 摇摆,我不能去 javaFX.
问题背后的故事:
我只是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觉。但当然,在 MacOSX 上,触控板内置了惯性功能。所以我想决定是否应该产生惯性运动。
试试这个代码
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);
}
}
}
也试试这个:
您可以通过 SwingUtilities 中的这三种方法来确定按下了哪个鼠标按钮:
是鼠标左键
是中间鼠标按钮
isRightMouseButton
鼠标滚轮监听器API
虽然MouseWheelListener
只有一种方法,但它有相应的适配器class——MouseAdapter
。此功能使应用程序只有一个适配器 class 组件实例来管理来自鼠标指针的所有类型的事件。
mouseWheelMoved(MouseWheelEvent) //Called when the mouse wheel is rotated.
以下代码片段与鼠标滚轮事件处理相关:
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);
}
}
鼠标滚轮使用单位增量的系统的 MouseWheelEventDemo 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
JavaSwing是个老技术,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触控板时,它会读取硬件滚轮的旋转。
当您使用现代激光鼠标时,鼠标移动将转换为旋转运动。
当您使用像现代 Mac 笔记本电脑中的触摸触控板时,滚动手势将转换为旋转运动,单点和双点触摸作为左键和右键单击(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 J-USB library。
对于内部硬件,首先要识别OS的类型,根据它可以得到information on system and hardware in Java。
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是什么类型的鼠标,并将其存储在配置文件或其他内容中。
对于 MacOS,您可以在 Java 中获取所有触摸板事件,我自己搜索了一段时间,刚刚回答了我自己的问题。把这个留在这里以防其他人开始进入同一个兔子洞
我有一个 Java swing 应用程序,它使用 'pan-able' JComponent 来显示大数据。当用户移动鼠标滚轮时,我会监听这些事件,并根据滚动量更新 JComponent 的内容。
我希望根据用户是否
有不同的行为- 使用经典鼠标
- 使用触摸板,就像在现代 Mac 笔记本电脑上可以找到的那样。
我如何检测到用户是使用鼠标滚轮还是触控板来生成滚动事件?我靠 java 1.6 摇摆,我不能去 javaFX.
问题背后的故事: 我只是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觉。但当然,在 MacOSX 上,触控板内置了惯性功能。所以我想决定是否应该产生惯性运动。
试试这个代码
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);
}
}
}
也试试这个:
您可以通过 SwingUtilities 中的这三种方法来确定按下了哪个鼠标按钮:
是鼠标左键
是中间鼠标按钮
isRightMouseButton
鼠标滚轮监听器API
虽然MouseWheelListener
只有一种方法,但它有相应的适配器class——MouseAdapter
。此功能使应用程序只有一个适配器 class 组件实例来管理来自鼠标指针的所有类型的事件。
mouseWheelMoved(MouseWheelEvent) //Called when the mouse wheel is rotated.
以下代码片段与鼠标滚轮事件处理相关:
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);
}
}
鼠标滚轮使用单位增量的系统的 MouseWheelEventDemo 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
JavaSwing是个老技术,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触控板时,它会读取硬件滚轮的旋转。
当您使用现代激光鼠标时,鼠标移动将转换为旋转运动。
当您使用像现代 Mac 笔记本电脑中的触摸触控板时,滚动手势将转换为旋转运动,单点和双点触摸作为左键和右键单击(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 J-USB library。
对于内部硬件,首先要识别OS的类型,根据它可以得到information on system and hardware in Java。
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是什么类型的鼠标,并将其存储在配置文件或其他内容中。
对于 MacOS,您可以在 Java 中获取所有触摸板事件,我自己搜索了一段时间,刚刚回答了我自己的问题。把这个留在这里以防其他人开始进入同一个兔子洞