hu.kazocsaba.imageviewer.ImageViewerUtil Maven / Gradle / Ivy
package hu.kazocsaba.imageviewer;
import java.util.Collection;
import java.util.Iterator;
/**
* Utility methods for image viewers.
* @author Kazó Csaba
*/
public final class ImageViewerUtil {
/** Private constructor. */
private ImageViewerUtil() {}
/**
* Synchronizes the view state of multiple image viewers with respect to scroll position
* and resize strategy, and other properties affecting display.
* @param first the first viewer
* @param others the other viewers
*/
public static void synchronizeViewers(ImageViewer first, ImageViewer... others) {
Synchronizer mainSynchronizer=first.getSynchronizer();
for (ImageViewer other: others) {
mainSynchronizer.add(other);
}
}
/**
* Synchronizes the view state of multiple image viewers with respect to scroll position
* and resize strategy, and other properties affecting display.
* @param viewers the viewers to synchronize
*/
public static void synchronizeViewers(Collection viewers) {
Iterator iterator = viewers.iterator();
if (!iterator.hasNext()) return;
Synchronizer mainSynchronizer=iterator.next().getSynchronizer();
while (iterator.hasNext()) {
mainSynchronizer.add(iterator.next());
}
}
/**
* Synchronizes the {@link PixelInfoStatusBar}s associated with the viewers. Viewers with a different or {@code null}
* status bar are ignored. When this function returns, the {@code PixelInfoStatusBar}s among the viewer status bars
* will share the same {@code PixelModel}, and thus display the same pixel.
*
* The default status bar of ImageViewer is a {@code PixelInfoStatusBar}, so this function can be used to
* synchronize the default status bars of viewers.
* @param viewers the viewers
*/
public static void synchronizePixelInfoStatusBars(ImageViewer... viewers) {
PixelModel model=null;
for (ImageViewer viewer: viewers) {
StatusBar bar=viewer.getStatusBar();
if (bar instanceof PixelInfoStatusBar) {
if (model==null)
model=((PixelInfoStatusBar)bar).getModel();
else
((PixelInfoStatusBar)bar).setModel(model);
}
}
}
}