Java Code Examples for javax.swing.JComponent#setLocation()

/**
 * Do the adjustment on the specified popupComponent immediately before
 * it is displayed.
 */
private void fixPopupLocation(JComponent popupComponent) {
    // we only need to fix Apple's aqua look and feel
    if(popupComponent.getClass().getName().indexOf("apple.laf") != 0) {
        return;
    }
    
    // put the popup right under the combo box so it looks like a
    // normal Aqua combo box
    Point comboLocationOnScreen = comboBox.getLocationOnScreen();
    int comboHeight = comboBox.getHeight();
    int popupY = comboLocationOnScreen.y + comboHeight;
    
    // ...unless the popup overflows the screen, in which case we put it
    // above the combobox
    Rectangle screenBounds = new ScreenGeometry(comboBox).getScreenBounds();
    int popupHeight = popupComponent.getPreferredSize().height;
    if(comboLocationOnScreen.y + comboHeight + popupHeight > screenBounds.x + screenBounds.height) {
        popupY = comboLocationOnScreen.y - popupHeight;
    }
    
    popupComponent.setLocation(comboLocationOnScreen.x, popupY);
}
 

private void installInLayeredPane(JComponent component) {
    JLayeredPane layeredPane = getRootPane().getLayeredPane();
    layeredPane.add(component, JLayeredPane.PALETTE_LAYER, 20);
    Dimension size = component.getPreferredSize();
    component.setSize(size);
    component.setLocation((getWidth() - size.width) / 2,
            (getHeight() - size.height) / 2);
    component.revalidate();
    component.setVisible(true);
}
 

public void setBoundsForFrame(JComponent f, int newX, int newY, int newWidth, int newHeight) {
    super.setBoundsForFrame(f, newX, newY, newWidth, newHeight);
    if (taskBar != null && newY >= taskBar.getY()) {
        f.setLocation(f.getX(), taskBar.getY() - f.getInsets().top);
    }
}