private void updateSystemIcon() {
Window window = getWindow();
if (window == null) {
mySystemIcon = null;
return;
}
List<Image> icons = window.getIconImages();
assert icons != null;
if (icons.size() == 0) {
mySystemIcon = null;
} else if (icons.size() == 1) {
mySystemIcon = icons.get(0);
} else {
final JBDimension size = JBUI.size(32);
final Image image = icons.get(0);
mySystemIcon =
Scalr.resize(
ImageUtil.toBufferedImage(image),
Scalr.Method.ULTRA_QUALITY,
size.width,
size.height);
}
}
/**
* Gets (creates if necessary) disabled icon based on the passed one.
*
* @return <code>ImageIcon</code> constructed from disabled image of passed icon.
*/
@Nullable
public static Icon getDisabledIcon(Icon icon) {
if (icon instanceof LazyIcon) icon = ((LazyIcon) icon).getOrComputeIcon();
if (icon == null) return null;
Icon disabledIcon = ourIcon2DisabledIcon.get(icon);
if (disabledIcon == null) {
if (!isGoodSize(icon)) {
LOG.error(icon); // # 22481
return EMPTY_ICON;
}
final int scale = UIUtil.isRetina() ? 2 : 1;
@SuppressWarnings("UndesirableClassUsage")
BufferedImage image =
new BufferedImage(
scale * icon.getIconWidth(),
scale * icon.getIconHeight(),
BufferedImage.TYPE_INT_ARGB);
final Graphics2D graphics = image.createGraphics();
graphics.setColor(UIUtil.TRANSPARENT_COLOR);
graphics.fillRect(0, 0, icon.getIconWidth(), icon.getIconHeight());
graphics.scale(scale, scale);
icon.paintIcon(LabelHolder.ourFakeComponent, graphics, 0, 0);
graphics.dispose();
Image img = ImageUtil.filter(image, UIUtil.getGrayFilter());
if (UIUtil.isRetina()) img = RetinaImage.createFrom(img, 2, ImageLoader.ourComponent);
disabledIcon = new JBImageIcon(img);
ourIcon2DisabledIcon.put(icon, disabledIcon);
}
return disabledIcon;
}
@Override
public Icon scale(float scaleFactor) {
if (scaleFactor == 1f) {
return this;
}
if (scaledIcons == null) {
scaledIcons = new HashMap<Float, Icon>(1);
}
Icon result = scaledIcons.get(scaleFactor);
if (result != null) {
return result;
}
final Image image =
ImageLoader.loadFromUrl(myUrl, UIUtil.isUnderDarcula(), scaleFactor >= 1.5f, filter);
if (image != null) {
int width = (int) (getIconWidth() * scaleFactor);
int height = (int) (getIconHeight() * scaleFactor);
final BufferedImage resizedImage =
Scalr.resize(
ImageUtil.toBufferedImage(image), Scalr.Method.ULTRA_QUALITY, width, height);
result = getIcon(resizedImage);
scaledIcons.put(scaleFactor, result);
return result;
}
return this;
}
@NotNull
private static Image scaleImage(Image image, float scale) {
int w = image.getWidth(null);
int h = image.getHeight(null);
if (w <= 0 || h <= 0) {
return image;
}
int width = (int) (scale * w);
int height = (int) (scale * h);
// Using "QUALITY" instead of "ULTRA_QUALITY" results in images that are less blurry
// because ultra quality performs a few more passes when scaling, which introduces blurriness
// when the scaling factor is relatively small (i.e. <= 3.0f) -- which is the case here.
return Scalr.resize(ImageUtil.toBufferedImage(image), Scalr.Method.QUALITY, width, height);
}