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Monday, May 7, 2012
How to hide cursor
Is there anyway to hide cursor other than using transparent gif image?
It appears that the Cursor class does not have a "blank" cursor to begin with, so one could define a new "blank" cursor using the Toolkit.createCustomCursor method.
Here's one way I've tried which seems to work:
// Transparent 16 x 16 pixel cursor image. BufferedImage cursorImg = new BufferedImage(16, 16, BufferedImage.TYPE_INT_ARGB);
// Create a new blank cursor. Cursor blankCursor = Toolkit.getDefaultToolkit().createCustomCursor( cursorImg, new Point(0, 0), "blank cursor");
// Set the blank cursor to the JFrame. mainJFrame.getContentPane().setCursor(blankCursor);
Edit
Regarding the comment about everything inside the JFrame ending up without a cursor, it seems that the Components which are contained in the JFrame will end up inheriting the cursor of the container (the JFrame), so if it is a requirement to have a certain Component have the cursor appear, one would have to manually set the desired cursor.
For example, if there is a JPanel contained in the JFrame, then one could set the cursor of that JPanel to the system's default using the Cursor.getDefaultCursor method:
JPanel p = ... // Sets the JPanel's cursor to the system default. p.setCursor(Cursor.getDefaultCursor());
final Timer cursorTimer = new Timer(2000, new ActionListener() { @Override public void actionPerformed(ActionEvent e) { getContentPane().setCursor(null); } }); cursorTimer.start();
It appears that the Cursor class does not have a "blank" cursor to begin with, so one could define a new "blank" cursor using the Toolkit.createCustomCursor method.
ReplyDeleteHere's one way I've tried which seems to work:
// Transparent 16 x 16 pixel cursor image.
BufferedImage cursorImg = new BufferedImage(16, 16, BufferedImage.TYPE_INT_ARGB);
// Create a new blank cursor.
Cursor blankCursor = Toolkit.getDefaultToolkit().createCustomCursor(
cursorImg, new Point(0, 0), "blank cursor");
// Set the blank cursor to the JFrame.
mainJFrame.getContentPane().setCursor(blankCursor);
Edit
Regarding the comment about everything inside the JFrame ending up without a cursor, it seems that the Components which are contained in the JFrame will end up inheriting the cursor of the container (the JFrame), so if it is a requirement to have a certain Component have the cursor appear, one would have to manually set the desired cursor.
For example, if there is a JPanel contained in the JFrame, then one could set the cursor of that JPanel to the system's default using the Cursor.getDefaultCursor method:
JPanel p = ...
// Sets the JPanel's cursor to the system default.
p.setCursor(Cursor.getDefaultCursor());
frame.setCursor(frame.getToolkit().createCustomCursor(
ReplyDeletenew BufferedImage(3, 3, BufferedImage.TYPE_INT_ARGB), new Point(0, 0),
"null"));
When using the LWJGL under Mac OS you need to do this:
ReplyDeleteSystem.setProperty("apple.awt.fullscreenhidecursor","true");
I solve this problem much easier:
ReplyDeletefinal Timer cursorTimer = new Timer(2000, new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
getContentPane().setCursor(null);
}
});
cursorTimer.start();
addMouseMotionListener(new MouseMotionAdapter() {
@Override
public void mouseMoved(MouseEvent e) {
getGlassPane().setCursor(Cursor.getDefaultCursor());
cursorTimer.restart();
}
});