@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;
}
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);
}
}
@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);
}