如何检查用户是否在他们按下鼠标的同一按钮上释放了鼠标?
[我想处理用户单击button1
,继续按住鼠标按钮,然后拖动到button2
并在button2
上释放鼠标的情况,其中button1
和button2
是JButton我已经添加了MouseListeners。
即:如果用户单击
button1
,然后释放鼠标button1
,执行action1()
。和:如果用户单击
button1
,然后释放鼠标button2
,什么也不做。
我曾尝试检查是否为ePressed.getSource() == eReleased.getSource()
,但拖动鼠标后源似乎保持不变。
见下文:
// My thoughts are that if the button is released on the source it was
// pressed, it should print "test", however "test" prints even if I
// drag the mouse outside of the bounds of the button and release it
public JButton getSqaure() {
JButton jb = new JButton();
jb.addMouseListener(new MouseAdapter() {
boolean pressed = false;
@Override
public void mousePressed(MouseEvent e) {
if (SwingUtilities.isRightMouseButton(e)) {
pressed = true;
}
}
@Override
public void mouseReleased(MouseEvent e) {
if (e.getSource() == jb && pressed) {
System.out.println("test");
}
pressed = false;
}
});
jb.setPreferredSize(new Dimension(50,50));
return jb;
}
@Override
public void mouseExited(MouseEvent e) {
pressed = false;
}
@Override
public void mouseEntered(MouseEvent e) {
pressed = true;
}