sdedic commented on a change in pull request #3414: URL: https://github.com/apache/netbeans/pull/3414#discussion_r780841283
########## File path: java/java.lsp.server/nbcode/integration/src/org/netbeans/modules/nbcode/integration/UIDefaultsIconMetadata.java ########## @@ -0,0 +1,357 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ +package org.netbeans.modules.nbcode.integration; + +import java.awt.Component; +import java.awt.EventQueue; +import java.awt.Graphics; +import java.awt.HeadlessException; +import java.awt.Image; +import java.awt.MediaTracker; +import java.awt.Toolkit; +import java.awt.Transparency; +import java.awt.image.BufferedImage; +import java.awt.image.ColorModel; +import java.awt.image.ImageObserver; +import java.awt.image.WritableRaster; +import java.beans.PropertyChangeEvent; +import java.beans.PropertyChangeListener; +import java.net.URI; +import java.net.URISyntaxException; +import java.net.URL; +import java.util.Enumeration; +import java.util.Hashtable; +import java.util.logging.Level; +import java.util.logging.Logger; +import javax.swing.Icon; +import javax.swing.ImageIcon; +import javax.swing.UIDefaults; +import javax.swing.UIDefaults.ActiveValue; +import javax.swing.UIDefaults.LazyValue; +import javax.swing.UIManager; +import org.openide.modules.OnStart; +import org.openide.util.ImageUtilities; + +/** + * Goes through UIDefaults and replaces Icons and Images with variants that + * return image's URL from the 'url' property. + * @author sdedic + */ +@OnStart +public class UIDefaultsIconMetadata implements Runnable { + private static final Logger LOG = Logger.getLogger(UIDefaultsIconMetadata.class.getName()); + + // for diagnostic purposes only + public static final String PROP_ORIGINAL_ICON = "originalIcon"; // NOI18N + // for diagnostic purposes only + public static final String PROP_ORIGINAL_IMAGE = "originalImage"; // NOI18N + + private static final String URN_DEFAULTS_PREFIX = "uidefaults:"; // NOI18N + + private static Object wrapImage(String key, Image image, Icon icon, Object... meta) { + Object o = image.getProperty(ImageUtilities.PROPERTY_ID, null); // NOI18N + if (o instanceof URL) { + return image; + } + + o = image.getProperty(ImageUtilities.PROPERTY_ID, null); + if (o instanceof String || o instanceof URI) { + return image; + } else { + + Hashtable props = new Hashtable(); + for (int i = 0; i < meta.length; i+= 2) { + props.put(meta[i], meta[i+1]); + } + props.put(ImageUtilities.PROPERTY_ID, URN_DEFAULTS_PREFIX + key); + return createNew(image, icon, props); + } + } + + @Override + public void run() { + EventQueue.invokeLater(() -> { + replaceIconsAndImages(UIManager.getDefaults()); + }); + } + + static void replaceIconsAndImages(UIDefaults defs) { + refreshUIDefaults(defs); + defs.addPropertyChangeListener(new PropertyChangeListener() { + @Override + public void propertyChange(PropertyChangeEvent evt) { + if (null == evt.getPropertyName() || "UIDefaults".equals(evt.getPropertyName())) { // NOI18N + LOG.log(Level.INFO, "Refreshing all UIDefaults"); + refreshUIDefaults(defs); + } else { + String k = evt.getPropertyName(); + Object o = evt.getNewValue(); + if (o == null || o instanceof W) { + return; + } + if (o instanceof LazyValue) { + LOG.log(Level.INFO, "Patched lazy value {0}", k); + defs.put(k, new LazyWrapper(k, (LazyValue)o)); + } else if (o instanceof ActiveWrapper) { + LOG.log(Level.INFO, "Patched active value {0}", k); + defs.put(k, new ActiveWrapper(k, (ActiveWrapper)o)); + } else if (o instanceof Icon || o instanceof Image) { + LOG.log(Level.INFO, "Patched Icon/Image value {0}", k); + defs.put(k, new SimpleWrapper(k, o)); + } + } + } + }); + } + + public static void refreshUIDefaults(UIDefaults defs) { + for (Enumeration en = defs.keys(); en.hasMoreElements(); ) { + Object ok = en.nextElement(); + + // Note: this actually instantiates the object, if it implements LazyValue. + Object o = defs.get(ok); + if (o instanceof W) { + continue; + } + if (o instanceof Icon || o instanceof Image) { + LOG.log(Level.INFO, "Replaced {0} with wrapped", ok); + defs.put(ok, new SimpleWrapper(ok.toString(), o)); + } + } + } + + private static Object wrapInstance(Object ok, Object o) { + if (o instanceof W) { + return o; + } + try { + if (o instanceof ImageIcon) { + ImageIcon ii = (ImageIcon)o; + Object wrapper = wrapImage(ok.toString(), ii.getImage(), ii, + PROP_ORIGINAL_IMAGE, ii.getImage(), PROP_ORIGINAL_ICON, ii); + if (wrapper != ii.getImage()) { + return (Icon)wrapper; + } else { + return o; + } + } + + if (o instanceof Icon) { + final Icon ico = (Icon)o; + Image converted = ImageUtilities.icon2Image(ico); + Object wrapper = wrapImage(ok.toString(), converted, ico, PROP_ORIGINAL_ICON, ico); + if (wrapper != converted) { + return (Icon)wrapper; + } else { + return o; + } + } + + if (o instanceof Image) { + Object wrapper = wrapImage(ok.toString(), (Image)o, null, PROP_ORIGINAL_IMAGE, o); + return wrapper; + } + } catch (RuntimeException ex) { + // setting to FINE as some icons cannot be image-converted (ClassCastEx during paintIcon). + LOG.log(Level.FINE, "Error wrapping default {0}: ", ok.toString()); + LOG.log(Level.FINE, "Exception thrown", ex); + } + return o; + } + + private static void replace(UIDefaults defs, Object key, String type, Object replacement) { + LOG.log(Level.INFO, "Replaced {0}", key); + defs.put(key, replacement); + } + + public static final class MetadataImageIcon extends ImageIcon { + private final Icon delegateIcon; + + public MetadataImageIcon(Icon delegateIcon, Image original) { + super(original); + this.delegateIcon = delegateIcon; + } + + /** + * Get an {@link Icon} instance representing a scalable version of this {@code Image}. + * + * @return may be null + */ + public Icon getDelegateIcon() { + return delegateIcon; + } + + @Override + public int getIconHeight() { + return delegateIcon.getIconHeight(); + } + + @Override + public int getIconWidth() { + return delegateIcon.getIconWidth(); + } + + @Override + public void paintIcon(Component c, Graphics g, int x, int y) { + delegateIcon.paintIcon(c, g, x, y); + } + } + + /** + * Delegating Image which adds metadata to the original image's {@link Image#getProperty}. + * @author sdedic + */ + public static class MetadataImage extends BufferedImage implements W { + private final Image original; + + public MetadataImage(Image original, ColorModel cm, + WritableRaster raster, + boolean isRasterPremultiplied, + Hashtable<?,?> properties) { + super(cm, raster, isRasterPremultiplied, properties); + this.original = original; + } + + @Override + public Object getProperty(String name, ImageObserver observer) { + Object o = super.getProperty(name, observer); + return o != UndefinedProperty ? o : original.getProperty(name, observer); + } + } + + public static Object createNew(Image image, Icon icon, Hashtable props) { + ensureLoaded(image); + boolean bitmask = (image instanceof Transparency) && ((Transparency) image).getTransparency() != Transparency.TRANSLUCENT; + ColorModel model = colorModel(bitmask ? Transparency.BITMASK : Transparency.TRANSLUCENT); + int w = Math.max(1, image.getWidth(null)); + int h = Math.max(1, image.getHeight(null)); + if (icon == null && image instanceof Icon) { + icon = (Icon)image; + } + WritableRaster raster = model.createCompatibleWritableRaster(w, h); + BufferedImage newImage = new MetadataImage(image, model, raster, bitmask, props); + + java.awt.Graphics g = newImage.createGraphics(); + g.drawImage(image, 0, 0, null); Review comment: In _this first_ version (which affects just NBLS headless distribution) - icons are exported from Nodes only. Could you please suggest how to improve this part in the future so the HiDPI works OK ? -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. 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