/*
* This method is called every time:
* - to make sure the viewport is returned to its default position
* - to remove the horizontal scrollbar when it is not wanted
*/
private void checkHorizontalScrollBar(BasicComboPopup popup) {
// Reset the viewport to the left
JViewport viewport = scrollPane.getViewport();
Point p = viewport.getViewPosition();
p.x = 0;
viewport.setViewPosition(p);
// Remove the scrollbar so it is never painted
if (!scrollBarRequired) {
scrollPane.setHorizontalScrollBar(null);
return;
}
// Make sure a horizontal scrollbar exists in the scrollpane
JScrollBar horizontal = scrollPane.getHorizontalScrollBar();
if (horizontal == null) {
horizontal = new JScrollBar(JScrollBar.HORIZONTAL);
scrollPane.setHorizontalScrollBar(horizontal);
scrollPane.setHorizontalScrollBarPolicy(JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);
}
// Potentially increase height of scroll pane to display the scrollbar
if (horizontalScrollBarWillBeVisible(popup, scrollPane)) {
Dimension scrollPaneSize = scrollPane.getPreferredSize();
scrollPaneSize.height += horizontal.getPreferredSize().height;
scrollPane.setPreferredSize(scrollPaneSize);
scrollPane.setMaximumSize(scrollPaneSize);
scrollPane.revalidate();
}
}
public void mouseDragged(MouseEvent ev) {
Window w = (Window) ev.getSource();
Point pt = ev.getPoint();
if (isMovingWindow) {
Point windowPt;
try {
windowPt = (Point) AccessController.doPrivileged(getLocationAction);
windowPt.x = windowPt.x - dragOffsetX;
windowPt.y = windowPt.y - dragOffsetY;
w.setLocation(windowPt);
} catch (PrivilegedActionException e) {
}
} else if (dragCursor != 0) {
Rectangle r = w.getBounds();
Rectangle startBounds = new Rectangle(r);
Dimension min = w.getMinimumSize();
switch (dragCursor) {
case Cursor.E_RESIZE_CURSOR:
adjust(r, min, 0, 0, pt.x + (dragWidth - dragOffsetX) - r.width, 0);
break;
case Cursor.S_RESIZE_CURSOR:
adjust(r, min, 0, 0, 0, pt.y + (dragHeight - dragOffsetY) - r.height);
break;
case Cursor.N_RESIZE_CURSOR:
adjust(r, min, 0, pt.y - dragOffsetY, 0, -(pt.y - dragOffsetY));
break;
case Cursor.W_RESIZE_CURSOR:
adjust(r, min, pt.x - dragOffsetX, 0, -(pt.x - dragOffsetX), 0);
break;
case Cursor.NE_RESIZE_CURSOR:
adjust(
r,
min,
0,
pt.y - dragOffsetY,
pt.x + (dragWidth - dragOffsetX) - r.width,
-(pt.y - dragOffsetY));
break;
case Cursor.SE_RESIZE_CURSOR:
adjust(
r,
min,
0,
0,
pt.x + (dragWidth - dragOffsetX) - r.width,
pt.y + (dragHeight - dragOffsetY) - r.height);
break;
case Cursor.NW_RESIZE_CURSOR:
adjust(
r,
min,
pt.x - dragOffsetX,
pt.y - dragOffsetY,
-(pt.x - dragOffsetX),
-(pt.y - dragOffsetY));
break;
case Cursor.SW_RESIZE_CURSOR:
adjust(
r,
min,
pt.x - dragOffsetX,
0,
-(pt.x - dragOffsetX),
pt.y + (dragHeight - dragOffsetY) - r.height);
break;
default:
break;
}
if (!r.equals(startBounds)) {
w.setBounds(r);
// Defer repaint/validate on mouseReleased unless dynamic
// layout is active.
if (Toolkit.getDefaultToolkit().isDynamicLayoutActive()) {
w.validate();
getRootPane().repaint();
}
}
}
}
