/**
* Called to process events. Mouse events will be rewritten to indicate the position in the
* document clicked, instead of the position of the panel.
*
* @param event to process.
*/
protected void processEvent(AWTEvent event) {
try {
if (event instanceof MouseEvent) {
final Point scrollPosition = getScrollPosition();
if (scrollPosition != null) {
final MouseEvent mouseEvent = (MouseEvent) event;
event =
new MouseEvent(
(Component) mouseEvent.getSource(),
mouseEvent.getID(),
mouseEvent.getWhen(),
mouseEvent.getModifiers(),
mouseEvent.getX() + scrollPosition.x,
mouseEvent.getY() + scrollPosition.y,
mouseEvent.getClickCount(),
mouseEvent.isPopupTrigger());
}
}
} catch (final Throwable exp) {
exp.printStackTrace(DjVuOptions.err);
System.gc();
}
super.processEvent(event);
}
/**
* Called to draw the panel.
*
* @param g Graphics device to draw the panel to.
*/
public void paintComponent(Graphics g) {
final Point scrollPosition = getScrollPosition();
g.translate(-scrollPosition.x, -scrollPosition.y);
try {
super.paintComponent(g);
} finally {
g.translate(scrollPosition.x, scrollPosition.y);
}
}
/**
* Called to set the URL to browse, and reset the scrollbars.
*
* @param url indicates document to view.
* @throws IOException if an error occures
*/
public void setURL(final URL url) throws IOException {
final URL old = getURL();
super.setURL(url);
if (old == null) {
// bcr getImageWait().setBufferMode(DjVuImage.COMPLETE_BUFFER);
setScrollbar(Scrollbar.HORIZONTAL, new Scrollbar(Scrollbar.HORIZONTAL));
setScrollbar(Scrollbar.VERTICAL, new Scrollbar(Scrollbar.VERTICAL));
hScroll.setUnitIncrement(16);
vScroll.setUnitIncrement(16);
}
}
public void run() {
super.run();
updateScrollbars();
}
/**
* Called to redraw the panel.
*
* @param g Graphics device to draw the panel to.
*/
public void paint(Graphics g) {
super.paint(g);
updateScrollbars();
}