# HG changeset patch
# User alexsch
# Date 1440417996 -14400
# Node ID e00f713e6103be11ad6cf8cb052faa25b3a9e627
# Parent  e07799997e1fce56ce3fd6bd7f15b00a536a8f06
6302464: Allow programmatic enabling of subpixel anti-aliasing in Swing on ANY platform
Reviewed-by: serb, azvegint

diff -r e07799997e1f -r e00f713e6103 jdk/src/java.desktop/macosx/classes/com/apple/laf/AquaLookAndFeel.java
--- a/jdk/src/java.desktop/macosx/classes/com/apple/laf/AquaLookAndFeel.java	Fri Aug 21 20:59:07 2015 +0300
+++ b/jdk/src/java.desktop/macosx/classes/com/apple/laf/AquaLookAndFeel.java	Mon Aug 24 16:06:36 2015 +0400
@@ -991,9 +991,7 @@
             "Tree.ancestorInputMap", new UIDefaults.LazyInputMap(new Object[]{"ESCAPE", "cancel"}),};
 
         table.putDefaults(defaults);
-
-        Object aaTextInfo = SwingUtilities2.AATextInfo.getAATextInfo(true);
-        table.put(SwingUtilities2.AA_TEXT_PROPERTY_KEY, aaTextInfo);
+        SwingUtilities2.putAATextInfo(true, table);
     }
 
     protected void initSystemColorDefaults(final UIDefaults table) {
diff -r e07799997e1f -r e00f713e6103 jdk/src/java.desktop/share/classes/com/sun/java/swing/plaf/gtk/GTKLookAndFeel.java
--- a/jdk/src/java.desktop/share/classes/com/sun/java/swing/plaf/gtk/GTKLookAndFeel.java	Fri Aug 21 20:59:07 2015 +0300
+++ b/jdk/src/java.desktop/share/classes/com/sun/java/swing/plaf/gtk/GTKLookAndFeel.java	Mon Aug 24 16:06:36 2015 +0400
@@ -26,7 +26,6 @@
 package com.sun.java.swing.plaf.gtk;
 
 import java.awt.*;
-import java.awt.event.*;
 import java.beans.*;
 import java.io.File;
 import java.lang.ref.*;
@@ -41,6 +40,8 @@
 
 import com.sun.java.swing.plaf.gtk.GTKConstants.PositionType;
 import com.sun.java.swing.plaf.gtk.GTKConstants.StateType;
+import java.util.HashMap;
+import java.util.Map;
 import sun.awt.SunToolkit;
 import sun.awt.UNIXToolkit;
 import sun.awt.OSInfo;
@@ -61,7 +62,7 @@
      * We should assume ON - or some variation of ON as no GTK desktop
      * ships with it OFF.
      */
-    static Object aaTextInfo;
+    static Map<Object, Object> aaTextInfo;
 
     /**
      * Solaris, or Linux with Sun JDS in a CJK Locale.
@@ -1337,7 +1338,9 @@
         if (fallbackFont != null) {
             table.put("TitledBorder.font", fallbackFont);
         }
-        table.put(SwingUtilities2.AA_TEXT_PROPERTY_KEY, aaTextInfo);
+        if (aaTextInfo != null) {
+            table.putAll(aaTextInfo);
+        }
     }
 
     protected void initSystemColorDefaults(UIDefaults table) {
@@ -1477,7 +1480,8 @@
          * XRender.
          */
         gtkAAFontSettingsCond = !isSunCJK && SwingUtilities2.isLocalDisplay();
-        aaTextInfo = SwingUtilities2.AATextInfo.getAATextInfo(gtkAAFontSettingsCond);
+        aaTextInfo = new HashMap<>(2);
+        SwingUtilities2.putAATextInfo(gtkAAFontSettingsCond, aaTextInfo);
     }
 
     static ReferenceQueue<GTKLookAndFeel> queue = new ReferenceQueue<GTKLookAndFeel>();
diff -r e07799997e1f -r e00f713e6103 jdk/src/java.desktop/share/classes/com/sun/java/swing/plaf/gtk/GTKStyle.java
--- a/jdk/src/java.desktop/share/classes/com/sun/java/swing/plaf/gtk/GTKStyle.java	Fri Aug 21 20:59:07 2015 +0300
+++ b/jdk/src/java.desktop/share/classes/com/sun/java/swing/plaf/gtk/GTKStyle.java	Mon Aug 24 16:06:36 2015 +0400
@@ -39,6 +39,8 @@
 import sun.swing.plaf.synth.SynthIcon;
 
 import com.sun.java.swing.plaf.gtk.GTKEngine.WidgetType;
+import static java.awt.RenderingHints.KEY_TEXT_ANTIALIASING;
+import static java.awt.RenderingHints.KEY_TEXT_LCD_CONTRAST;
 
 /**
  *
@@ -115,10 +117,12 @@
     @Override
     public void installDefaults(SynthContext context) {
         super.installDefaults(context);
-        if (!context.getRegion().isSubregion()) {
-            context.getComponent().putClientProperty(
-                SwingUtilities2.AA_TEXT_PROPERTY_KEY,
-                GTKLookAndFeel.aaTextInfo);
+        Map<Object, Object> aaTextInfo = GTKLookAndFeel.aaTextInfo;
+        if (aaTextInfo != null && !context.getRegion().isSubregion()) {
+            context.getComponent().putClientProperty(KEY_TEXT_ANTIALIASING,
+                    aaTextInfo.get(KEY_TEXT_ANTIALIASING));
+            context.getComponent().putClientProperty(KEY_TEXT_LCD_CONTRAST,
+                    aaTextInfo.get(KEY_TEXT_LCD_CONTRAST));
         }
     }
 
diff -r e07799997e1f -r e00f713e6103 jdk/src/java.desktop/share/classes/com/sun/java/swing/plaf/windows/WindowsLookAndFeel.java
--- a/jdk/src/java.desktop/share/classes/com/sun/java/swing/plaf/windows/WindowsLookAndFeel.java	Fri Aug 21 20:59:07 2015 +0300
+++ b/jdk/src/java.desktop/share/classes/com/sun/java/swing/plaf/windows/WindowsLookAndFeel.java	Mon Aug 24 16:06:36 2015 +0400
@@ -556,8 +556,7 @@
              * for both client property and UIDefaults.
              * Also need to set up listeners for changes in these settings.
              */
-            Object aaTextInfo = SwingUtilities2.AATextInfo.getAATextInfo(true);
-            table.put(SwingUtilities2.AA_TEXT_PROPERTY_KEY, aaTextInfo);
+            SwingUtilities2.putAATextInfo(true, table);
             this.aaSettings =
                 new FontDesktopProperty(SunToolkit.DESKTOPFONTHINTS);
         }
@@ -2402,9 +2401,8 @@
         }
 
         protected void updateUI() {
-            Object aaTextInfo = SwingUtilities2.AATextInfo.getAATextInfo(true);
             UIDefaults defaults = UIManager.getLookAndFeelDefaults();
-            defaults.put(SwingUtilities2.AA_TEXT_PROPERTY_KEY, aaTextInfo);
+            SwingUtilities2.putAATextInfo(true, defaults);
             super.updateUI();
         }
     }
diff -r e07799997e1f -r e00f713e6103 jdk/src/java.desktop/share/classes/javax/swing/JComponent.java
--- a/jdk/src/java.desktop/share/classes/javax/swing/JComponent.java	Fri Aug 21 20:59:07 2015 +0300
+++ b/jdk/src/java.desktop/share/classes/javax/swing/JComponent.java	Mon Aug 24 16:06:36 2015 +0400
@@ -377,7 +377,8 @@
     /**
      * AA text hints.
      */
-    transient private Object aaTextInfo;
+    transient private Object aaHint;
+    transient private Object lcdRenderingHint;
 
     static Graphics safelyGetGraphics(Component c) {
         return safelyGetGraphics(c, SwingUtilities.getRoot(c));
@@ -655,8 +656,10 @@
         uninstallUIAndProperties();
 
         // aaText shouldn't persist between look and feels, reset it.
-        aaTextInfo =
-            UIManager.getDefaults().get(SwingUtilities2.AA_TEXT_PROPERTY_KEY);
+        aaHint = UIManager.getDefaults().get(
+                RenderingHints.KEY_TEXT_ANTIALIASING);
+        lcdRenderingHint = UIManager.getDefaults().get(
+                RenderingHints.KEY_TEXT_LCD_CONTRAST);
         ComponentUI oldUI = ui;
         ui = newUI;
         if (ui != null) {
@@ -4048,8 +4051,10 @@
      * @see #putClientProperty
      */
     public final Object getClientProperty(Object key) {
-        if (key == SwingUtilities2.AA_TEXT_PROPERTY_KEY) {
-            return aaTextInfo;
+        if (key == RenderingHints.KEY_TEXT_ANTIALIASING) {
+            return aaHint;
+        } else if (key == RenderingHints.KEY_TEXT_LCD_CONTRAST) {
+            return lcdRenderingHint;
         } else if (key == SwingUtilities2.COMPONENT_UI_PROPERTY_KEY) {
             return ui;
         }
@@ -4091,8 +4096,11 @@
      * @see #addPropertyChangeListener
      */
     public final void putClientProperty(Object key, Object value) {
-        if (key == SwingUtilities2.AA_TEXT_PROPERTY_KEY) {
-            aaTextInfo = value;
+        if (key == RenderingHints.KEY_TEXT_ANTIALIASING) {
+            aaHint = value;
+            return;
+        } else if (key == RenderingHints.KEY_TEXT_LCD_CONTRAST) {
+            lcdRenderingHint = value;
             return;
         }
         if (value == null && clientProperties == null) {
diff -r e07799997e1f -r e00f713e6103 jdk/src/java.desktop/share/classes/javax/swing/plaf/basic/BasicInternalFrameTitlePane.java
--- a/jdk/src/java.desktop/share/classes/javax/swing/plaf/basic/BasicInternalFrameTitlePane.java	Fri Aug 21 20:59:07 2015 +0300
+++ b/jdk/src/java.desktop/share/classes/javax/swing/plaf/basic/BasicInternalFrameTitlePane.java	Mon Aug 24 16:06:36 2015 +0400
@@ -35,11 +35,11 @@
 import java.beans.PropertyChangeListener;
 import java.beans.PropertyChangeEvent;
 import java.beans.PropertyVetoException;
+import static java.awt.RenderingHints.KEY_TEXT_ANTIALIASING;
+import static java.awt.RenderingHints.KEY_TEXT_LCD_CONTRAST;
 
 import sun.swing.DefaultLookup;
 
-import static sun.swing.SwingUtilities2.AA_TEXT_PROPERTY_KEY;
-
 /**
  * The class that manages a basic title bar
  * <p>
@@ -217,8 +217,10 @@
     }
 
     private void updateProperties() {
-        final Object aaTextInfo = frame.getClientProperty(AA_TEXT_PROPERTY_KEY);
-        putClientProperty(AA_TEXT_PROPERTY_KEY, aaTextInfo);
+        putClientProperty(KEY_TEXT_ANTIALIASING,
+                frame.getClientProperty(KEY_TEXT_ANTIALIASING));
+        putClientProperty(KEY_TEXT_LCD_CONTRAST,
+                frame.getClientProperty(KEY_TEXT_LCD_CONTRAST));
     }
 
     /**
diff -r e07799997e1f -r e00f713e6103 jdk/src/java.desktop/share/classes/javax/swing/plaf/metal/MetalLookAndFeel.java
--- a/jdk/src/java.desktop/share/classes/javax/swing/plaf/metal/MetalLookAndFeel.java	Fri Aug 21 20:59:07 2015 +0300
+++ b/jdk/src/java.desktop/share/classes/javax/swing/plaf/metal/MetalLookAndFeel.java	Mon Aug 24 16:06:36 2015 +0400
@@ -1514,8 +1514,7 @@
         flushUnreferenced(); // Remove old listeners
 
         boolean lafCond = SwingUtilities2.isLocalDisplay();
-        Object aaTextInfo = SwingUtilities2.AATextInfo.getAATextInfo(lafCond);
-        table.put(SwingUtilities2.AA_TEXT_PROPERTY_KEY, aaTextInfo);
+        SwingUtilities2.putAATextInfo(lafCond, table);
         new AATextListener(this);
     }
 
@@ -2204,9 +2203,7 @@
             }
             UIDefaults defaults = UIManager.getLookAndFeelDefaults();
             boolean lafCond = SwingUtilities2.isLocalDisplay();
-            Object aaTextInfo =
-                SwingUtilities2.AATextInfo.getAATextInfo(lafCond);
-            defaults.put(SwingUtilities2.AA_TEXT_PROPERTY_KEY, aaTextInfo);
+            SwingUtilities2.putAATextInfo(lafCond, defaults);
             updateUI();
         }
 
diff -r e07799997e1f -r e00f713e6103 jdk/src/java.desktop/share/classes/javax/swing/plaf/synth/SynthLookAndFeel.java
--- a/jdk/src/java.desktop/share/classes/javax/swing/plaf/synth/SynthLookAndFeel.java	Fri Aug 21 20:59:07 2015 +0300
+++ b/jdk/src/java.desktop/share/classes/javax/swing/plaf/synth/SynthLookAndFeel.java	Mon Aug 24 16:06:36 2015 +0400
@@ -688,8 +688,7 @@
 
         // enabled antialiasing depending on desktop settings
         flushUnreferenced();
-        Object aaTextInfo = getAATextInfo();
-        table.put(SwingUtilities2.AA_TEXT_PROPERTY_KEY, aaTextInfo);
+        SwingUtilities2.putAATextInfo(useLAFConditions(), table);
         new AATextListener(this);
 
         if (defaultsMap != null) {
@@ -794,7 +793,7 @@
      *
      * @return the text antialiasing information associated to the desktop
      */
-    private static Object getAATextInfo() {
+    private static boolean useLAFConditions() {
         String language = Locale.getDefault().getLanguage();
         String desktop =
             AccessController.doPrivileged(new GetPropertyAction("sun.desktop"));
@@ -805,10 +804,7 @@
         boolean isGnome = "gnome".equals(desktop);
         boolean isLocal = SwingUtilities2.isLocalDisplay();
 
-        boolean setAA = isLocal && (!isGnome || !isCjkLocale);
-
-        Object aaTextInfo = SwingUtilities2.AATextInfo.getAATextInfo(setAA);
-        return aaTextInfo;
+        return isLocal && (!isGnome || !isCjkLocale);
     }
 
     private static ReferenceQueue<LookAndFeel> queue = new ReferenceQueue<LookAndFeel>();
@@ -844,8 +840,7 @@
                 return;
             }
 
-            Object aaTextInfo = getAATextInfo();
-            defaults.put(SwingUtilities2.AA_TEXT_PROPERTY_KEY, aaTextInfo);
+            SwingUtilities2.putAATextInfo(useLAFConditions(), defaults);
 
             updateUI();
         }
diff -r e07799997e1f -r e00f713e6103 jdk/src/java.desktop/share/classes/sun/swing/SwingUtilities2.java
--- a/jdk/src/java.desktop/share/classes/sun/swing/SwingUtilities2.java	Fri Aug 21 20:59:07 2015 +0300
+++ b/jdk/src/java.desktop/share/classes/sun/swing/SwingUtilities2.java	Mon Aug 24 16:06:36 2015 +0400
@@ -103,14 +103,6 @@
         new FontRenderContext(null, false, false);
 
     /**
-     * A JComponent client property is used to determine text aa settings.
-     * To avoid having this property persist between look and feels changes
-     * the value of the property is set to null in JComponent.setUI
-     */
-    public static final Object AA_TEXT_PROPERTY_KEY =
-                          new StringBuffer("AATextInfoPropertyKey");
-
-    /**
      * Attribute key for the content elements.  If it is set on an element, the
      * element is considered to be a line break.
      */
@@ -123,58 +115,23 @@
     private static final StringBuilder SKIP_CLICK_COUNT =
         new StringBuilder("skipClickCount");
 
-    /* Presently this class assumes default fractional metrics.
-     * This may need to change to emulate future platform L&Fs.
-     */
-    public static class AATextInfo {
-
-        private static AATextInfo getAATextInfoFromMap(Map<java.awt.RenderingHints.Key, Object> hints) {
-
-            Object aaHint   = hints.get(KEY_TEXT_ANTIALIASING);
-            Object contHint = hints.get(KEY_TEXT_LCD_CONTRAST);
-
-            if (aaHint == null ||
-                aaHint == VALUE_TEXT_ANTIALIAS_OFF ||
-                aaHint == VALUE_TEXT_ANTIALIAS_DEFAULT) {
-                return null;
-            } else {
-                return new AATextInfo(aaHint, (Integer)contHint);
-            }
-        }
+    @SuppressWarnings("unchecked")
+    public static void putAATextInfo(boolean lafCondition,
+            Map<Object, Object> map) {
+        SunToolkit.setAAFontSettingsCondition(lafCondition);
+        Toolkit tk = Toolkit.getDefaultToolkit();
+        Object desktopHints = tk.getDesktopProperty(SunToolkit.DESKTOPFONTHINTS);
 
-        @SuppressWarnings("unchecked")
-        public static AATextInfo getAATextInfo(boolean lafCondition) {
-            SunToolkit.setAAFontSettingsCondition(lafCondition);
-            Toolkit tk = Toolkit.getDefaultToolkit();
-            Object map = tk.getDesktopProperty(SunToolkit.DESKTOPFONTHINTS);
-            if (map instanceof Map) {
-                return getAATextInfoFromMap((Map<java.awt.RenderingHints.Key, Object>)map);
-            } else {
-                return null;
+        if (desktopHints instanceof Map) {
+            Map<Object, Object> hints = (Map<Object, Object>) desktopHints;
+            Object aaHint = hints.get(KEY_TEXT_ANTIALIASING);
+            if (aaHint == null
+                    || aaHint == VALUE_TEXT_ANTIALIAS_OFF
+                    || aaHint == VALUE_TEXT_ANTIALIAS_DEFAULT) {
+                return;
             }
-        }
-
-        Object aaHint;
-        Integer lcdContrastHint;
-        FontRenderContext frc;
-
-        /* These are rarely constructed objects, and only when a complete
-         * UI is being updated, so the cost of the tests here is minimal
-         * and saves tests elsewhere.
-         * We test that the values are ones we support/expect.
-         */
-        public AATextInfo(Object aaHint, Integer lcdContrastHint) {
-            if (aaHint == null) {
-                throw new InternalError("null not allowed here");
-            }
-            if (aaHint == VALUE_TEXT_ANTIALIAS_OFF ||
-                aaHint == VALUE_TEXT_ANTIALIAS_DEFAULT) {
-                throw new InternalError("AA must be on");
-            }
-            this.aaHint = aaHint;
-            this.lcdContrastHint = lcdContrastHint;
-            this.frc = new FontRenderContext(null, aaHint,
-                                             VALUE_FRACTIONALMETRICS_DEFAULT);
+            map.put(KEY_TEXT_ANTIALIASING, aaHint);
+            map.put(KEY_TEXT_LCD_CONTRAST, hints.get(KEY_TEXT_LCD_CONTRAST));
         }
     }
 
@@ -241,22 +198,6 @@
     //
 
     /**
-     * Returns whether or not text should be drawn antialiased.
-     *
-     * @param c JComponent to test.
-     * @return Whether or not text should be drawn antialiased for the
-     *         specified component.
-     */
-    public static AATextInfo drawTextAntialiased(JComponent c) {
-        if (c != null) {
-            /* a non-null property implies some form of AA requested */
-            return (AATextInfo)c.getClientProperty(AA_TEXT_PROPERTY_KEY);
-        }
-        // No component, assume aa is off
-        return null;
-    }
-
-    /**
      * Returns the left side bearing of the first character of string. The
      * left side bearing is calculated from the passed in
      * FontMetrics.  If the passed in String is less than one
@@ -530,7 +471,6 @@
 
         // If we get here we're not printing
         if (g instanceof Graphics2D) {
-            AATextInfo info = drawTextAntialiased(c);
             Graphics2D g2 = (Graphics2D)g;
 
             boolean needsTextLayout = ((c != null) &&
@@ -543,21 +483,25 @@
                 }
             }
 
-            if (info != null) {
+            Object aaHint = c.getClientProperty(KEY_TEXT_ANTIALIASING);
+            if (aaHint != null) {
                 Object oldContrast = null;
                 Object oldAAValue = g2.getRenderingHint(KEY_TEXT_ANTIALIASING);
-                if (info.aaHint != oldAAValue) {
-                    g2.setRenderingHint(KEY_TEXT_ANTIALIASING, info.aaHint);
+                if (aaHint != oldAAValue) {
+                    g2.setRenderingHint(KEY_TEXT_ANTIALIASING, aaHint);
                 } else {
                     oldAAValue = null;
                 }
-                if (info.lcdContrastHint != null) {
+
+                Object lcdContrastHint = c.getClientProperty(
+                        KEY_TEXT_LCD_CONTRAST);
+                if (lcdContrastHint != null) {
                     oldContrast = g2.getRenderingHint(KEY_TEXT_LCD_CONTRAST);
-                    if (info.lcdContrastHint.equals(oldContrast)) {
+                    if (lcdContrastHint.equals(oldContrast)) {
                         oldContrast = null;
                     } else {
                         g2.setRenderingHint(KEY_TEXT_LCD_CONTRAST,
-                                            info.lcdContrastHint);
+                                            lcdContrastHint);
                     }
                 }
 
@@ -821,24 +765,26 @@
         }
         // Assume we're not printing if we get here, or that we are invoked
         // via Swing text printing which is laid out for the printer.
-        AATextInfo info = drawTextAntialiased(c);
-        if (info != null && (g instanceof Graphics2D)) {
+        Object aaHint = c.getClientProperty(KEY_TEXT_ANTIALIASING);
+        if (aaHint != null && (g instanceof Graphics2D)) {
             Graphics2D g2 = (Graphics2D)g;
 
             Object oldContrast = null;
             Object oldAAValue = g2.getRenderingHint(KEY_TEXT_ANTIALIASING);
-            if (info.aaHint != null && info.aaHint != oldAAValue) {
-                g2.setRenderingHint(KEY_TEXT_ANTIALIASING, info.aaHint);
+            if (aaHint != null && aaHint != oldAAValue) {
+                g2.setRenderingHint(KEY_TEXT_ANTIALIASING, aaHint);
             } else {
                 oldAAValue = null;
             }
-            if (info.lcdContrastHint != null) {
+
+            Object lcdContrastHint = c.getClientProperty(KEY_TEXT_LCD_CONTRAST);
+            if (lcdContrastHint != null) {
                 oldContrast = g2.getRenderingHint(KEY_TEXT_LCD_CONTRAST);
-                if (info.lcdContrastHint.equals(oldContrast)) {
+                if (lcdContrastHint.equals(oldContrast)) {
                     oldContrast = null;
                 } else {
                     g2.setRenderingHint(KEY_TEXT_LCD_CONTRAST,
-                                        info.lcdContrastHint);
+                                        lcdContrastHint);
                 }
             }
 
@@ -1117,15 +1063,35 @@
      */
     private static FontRenderContext getFRCProperty(JComponent c) {
         if (c != null) {
-            AATextInfo info =
-                (AATextInfo)c.getClientProperty(AA_TEXT_PROPERTY_KEY);
-            if (info != null) {
-                return info.frc;
+            Object aaHint = c.getClientProperty(KEY_TEXT_ANTIALIASING);
+            if (aaHint != null) {
+                return getFRCFromCache(aaHint);
             }
         }
         return null;
     }
 
+    private static final Object APP_CONTEXT_FRC_CACHE_KEY = new Object();
+
+    private static FontRenderContext getFRCFromCache(Object aaHint) {
+        @SuppressWarnings("unchecked")
+        Map<Object, FontRenderContext> cache = (Map<Object, FontRenderContext>)
+                AppContext.getAppContext().get(APP_CONTEXT_FRC_CACHE_KEY);
+
+        if (cache == null) {
+            cache = new HashMap<>();
+            AppContext.getAppContext().put(APP_CONTEXT_FRC_CACHE_KEY, cache);
+        }
+
+        FontRenderContext frc = cache.get(aaHint);
+        if (frc == null) {
+            frc = new FontRenderContext(null, aaHint,
+                    VALUE_FRACTIONALMETRICS_DEFAULT);
+            cache.put(aaHint, frc);
+        }
+        return frc;
+    }
+
     /*
      * returns true if the Graphics is print Graphics
      * false otherwise
diff -r e07799997e1f -r e00f713e6103 jdk/test/javax/swing/UIDefaults/6302464/bug6302464.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/test/javax/swing/UIDefaults/6302464/bug6302464.java	Mon Aug 24 16:06:36 2015 +0400
@@ -0,0 +1,283 @@
+/*
+ * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+import java.util.Map;
+import java.util.HashSet;
+import java.awt.Color;
+import java.awt.Toolkit;
+import java.awt.Graphics2D;
+import java.awt.font.FontRenderContext;
+import java.awt.image.BufferedImage;
+import javax.swing.JLabel;
+import javax.swing.SwingUtilities;
+import javax.swing.UIManager;
+import javax.swing.UIDefaults;
+import javax.swing.UIManager.LookAndFeelInfo;
+import javax.swing.plaf.basic.BasicLookAndFeel;
+import static java.awt.RenderingHints.KEY_TEXT_ANTIALIASING;
+import static java.awt.RenderingHints.KEY_TEXT_LCD_CONTRAST;
+import static java.awt.RenderingHints.VALUE_TEXT_ANTIALIAS_GASP;
+import static java.awt.RenderingHints.VALUE_TEXT_ANTIALIAS_LCD_HBGR;
+import static java.awt.RenderingHints.VALUE_TEXT_ANTIALIAS_LCD_HRGB;
+import static java.awt.RenderingHints.VALUE_TEXT_ANTIALIAS_LCD_VBGR;
+import static java.awt.RenderingHints.VALUE_TEXT_ANTIALIAS_LCD_VRGB;
+import static java.awt.RenderingHints.VALUE_TEXT_ANTIALIAS_OFF;
+
+/**
+ * @test
+ * @bug 6302464
+ * @author Alexandr Scherbatiy
+ * @summary Allow programmatic enabling of subpixel anti-aliasing in Swing
+ */
+public class bug6302464 {
+
+    public static void main(String[] args) throws Exception {
+        SwingUtilities.invokeAndWait(bug6302464::testAntialiasingProperties);
+    }
+
+    private static void testAntialiasingProperties() {
+        testCustomLAF();
+        testFontRenderingContext();
+        testAntialiasingHints();
+        testLAFAAHints();
+    }
+
+    private static void testCustomLAF() {
+        try {
+            testCustomLAF(false);
+            testCustomLAF(true);
+        } catch (Exception e) {
+            throw new RuntimeException(e);
+        }
+    }
+
+    private static void testCustomLAF(boolean useAAHints) throws Exception {
+        CustomLookAndFeel customLAF = new CustomLookAndFeel(useAAHints);
+        UIManager.setLookAndFeel(customLAF);
+
+        JLabel label = new JLabel();
+        Object aaHint = label.getClientProperty(KEY_TEXT_ANTIALIASING);
+        Object lcdContrastHint = label.getClientProperty(KEY_TEXT_LCD_CONTRAST);
+
+        if (aaHint != customLAF.getAAHint()) {
+            throw new RuntimeException("AA hint from custom L&F is not set");
+        }
+
+        if (lcdContrastHint != customLAF.getLCDContarstHint()) {
+            throw new RuntimeException("AA hint from custom L&F is not set");
+        }
+    }
+
+    private static final Object[] ANTIALIASING_HINTS = {
+        VALUE_TEXT_ANTIALIAS_GASP,
+        VALUE_TEXT_ANTIALIAS_LCD_HRGB,
+        VALUE_TEXT_ANTIALIAS_LCD_HBGR,
+        VALUE_TEXT_ANTIALIAS_LCD_VRGB,
+        VALUE_TEXT_ANTIALIAS_LCD_VBGR
+    };
+
+    private static void testFontRenderingContext() {
+        for (Object aaHint : ANTIALIASING_HINTS) {
+            testFontRenderingContext(aaHint);
+        }
+    }
+
+    private static void testFontRenderingContext(Object aaHint) {
+
+        JLabel label = new JLabel("Test");
+        label.putClientProperty(KEY_TEXT_ANTIALIASING, aaHint);
+        FontRenderContext frc = label.getFontMetrics(
+                label.getFont()).getFontRenderContext();
+
+        if (!aaHint.equals(frc.getAntiAliasingHint())) {
+            throw new RuntimeException("Wrong aa hint in FontRenderContext");
+        }
+    }
+
+    private static void testAntialiasingHints() {
+        setMetalLookAndFeel();
+
+        HashSet colorsAAOff = getAntialiasedColors(VALUE_TEXT_ANTIALIAS_OFF, 100);
+
+        if (colorsAAOff.size() > 2) {
+            throw new RuntimeException("Wrong number of antialiased colors.");
+        }
+
+        HashSet colorsAAOnLCD100 = getAntialiasedColors(
+                VALUE_TEXT_ANTIALIAS_LCD_HRGB, 100);
+
+        if (colorsAAOnLCD100.size() <= 2) {
+            throw new RuntimeException("Wrong number of antialiased colors.");
+        }
+
+        HashSet colorsAAOnLCD250 = getAntialiasedColors(
+                VALUE_TEXT_ANTIALIAS_LCD_HRGB, 250);
+
+        if (colorsAAOnLCD250.size() <= 2) {
+            throw new RuntimeException("Wrong number of antialiased colors.");
+        }
+
+        if (colorsAAOnLCD100.equals(colorsAAOnLCD250)) {
+            throw new RuntimeException("LCD contarst is not used.");
+        }
+    }
+
+    private static HashSet getAntialiasedColors(Object aaHint, int lcdContrast) {
+
+        JLabel label = new JLabel("ABCD");
+        label.setSize(label.getPreferredSize());
+        label.putClientProperty(KEY_TEXT_ANTIALIASING, aaHint);
+        label.putClientProperty(KEY_TEXT_LCD_CONTRAST, lcdContrast);
+
+        int w = label.getWidth();
+        int h = label.getHeight();
+
+        BufferedImage buffImage = new BufferedImage(w, h, BufferedImage.TYPE_INT_RGB);
+        Graphics2D g = buffImage.createGraphics();
+        g.setColor(Color.WHITE);
+        g.fillRect(0, 0, w, h);
+        label.paint(g);
+        g.dispose();
+
+        HashSet<Color> colors = new HashSet<>();
+
+        for (int i = 0; i < w; i++) {
+            for (int j = 0; j < h; j++) {
+                Color color = new Color(buffImage.getRGB(i, j));
+                colors.add(color);
+            }
+        }
+
+        return colors;
+    }
+
+    private static void setMetalLookAndFeel() {
+        setLookAndFeel("javax.swing.plaf.metal.MetalLookAndFeel");
+    }
+
+    private static void setLookAndFeel(String lafClass) {
+        try {
+            UIManager.setLookAndFeel(lafClass);
+        } catch (Exception e) {
+            throw new RuntimeException(e);
+        }
+    }
+
+    private static void testLAFAAHints() {
+
+        for (LookAndFeelInfo lafInfo : UIManager.getInstalledLookAndFeels()) {
+            testLAFAAHints(lafInfo);
+        }
+    }
+
+    private static final String[] EXCLUDED_LAFS = {"CDE/Motif"};
+
+    private static boolean isExcludedLAF(LookAndFeelInfo lafInfo) {
+        for (String excludedLaf : EXCLUDED_LAFS) {
+            if (lafInfo.getName().equals(excludedLaf)) {
+                return true;
+            }
+        }
+        return false;
+    }
+
+    private static void testLAFAAHints(LookAndFeelInfo lafInfo) {
+        setLookAndFeel(lafInfo.getClassName());
+
+        Object uiAAHint = UIManager.getDefaults().get(KEY_TEXT_ANTIALIASING);
+        Object uiLCDContrastHint = UIManager.getDefaults().get(
+                KEY_TEXT_LCD_CONTRAST);
+
+        Object aaHints = Toolkit.getDefaultToolkit().
+                getDesktopProperty("awt.font.desktophints");
+
+        if (isExcludedLAF(lafInfo)) {
+            if (uiAAHint != null || uiLCDContrastHint != null) {
+                throw new RuntimeException("Rendering hints set for excluded L&F");
+            }
+        } else if (aaHints instanceof Map) {
+            Map map = (Map) aaHints;
+
+            if (uiAAHint != map.get(KEY_TEXT_ANTIALIASING)) {
+                throw new RuntimeException("UI defaults contains wrong aa hint");
+            }
+
+            if (uiLCDContrastHint != map.get(KEY_TEXT_LCD_CONTRAST)) {
+                throw new RuntimeException("UI defaults contains wrong"
+                        + "lcd contrast hint");
+            }
+        } else if (uiAAHint != null || uiLCDContrastHint != null) {
+            throw new RuntimeException("Rendering hints set for empty desktop"
+                    + "properties");
+        }
+    }
+
+    private static class CustomLookAndFeel extends BasicLookAndFeel {
+
+        private final boolean useAAHints;
+
+        public CustomLookAndFeel(boolean useAAHints) {
+            this.useAAHints = useAAHints;
+        }
+
+        @Override
+        public String getDescription() {
+            return getName();
+        }
+
+        @Override
+        public String getName() {
+            return "Custom L&F";
+        }
+
+        @Override
+        public String getID() {
+            return getName();
+        }
+
+        @Override
+        public boolean isNativeLookAndFeel() {
+            return false;
+        }
+
+        @Override
+        public boolean isSupportedLookAndFeel() {
+            return true;
+        }
+
+        @Override
+        protected void initClassDefaults(UIDefaults table) {
+            super.initClassDefaults(table);
+            table.put(KEY_TEXT_ANTIALIASING, getAAHint());
+            table.put(KEY_TEXT_LCD_CONTRAST, getLCDContarstHint());
+        }
+
+        private Object getAAHint() {
+            return useAAHints ? VALUE_TEXT_ANTIALIAS_GASP : null;
+        }
+
+        private Object getLCDContarstHint() {
+            return useAAHints ? 115 : null;
+        }
+    }
+}