jdk/src/share/classes/sun/font/AttributeValues.java
changeset 2 90ce3da70b43
child 533 482a0821a9d5
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/src/share/classes/sun/font/AttributeValues.java	Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,907 @@
+/*
+ * Portions Copyright 2004-2006 Sun Microsystems, Inc.  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.  Sun designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Sun in the LICENSE file that accompanied this code.
+ *
+ * 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ */
+
+/*
+ *
+ * (C) Copyright IBM Corp. 2005 - All Rights Reserved
+ *
+ * The original version of this source code and documentation is
+ * copyrighted and owned by IBM. These materials are provided
+ * under terms of a License Agreement between IBM and Sun.
+ * This technology is protected by multiple US and International
+ * patents. This notice and attribution to IBM may not be removed.
+ */
+
+package sun.font;
+
+import static sun.font.EAttribute.*;
+import static java.lang.Math.*;
+
+import java.awt.Font;
+import java.awt.Paint;
+import java.awt.Toolkit;
+import java.awt.font.GraphicAttribute;
+import java.awt.font.NumericShaper;
+import java.awt.font.TextAttribute;
+import java.awt.font.TransformAttribute;
+import java.awt.geom.AffineTransform;
+import java.awt.geom.NoninvertibleTransformException;
+import java.awt.geom.Point2D;
+import java.awt.im.InputMethodHighlight;
+import java.io.Serializable;
+import java.text.Annotation;
+import java.text.AttributedCharacterIterator.Attribute;
+import java.util.Map;
+import java.util.HashMap;
+import java.util.Hashtable;
+
+public final class AttributeValues implements Cloneable {
+    private int defined;
+    private int nondefault;
+
+    private String family = "Default";
+    private float weight = 1f;
+    private float width = 1f;
+    private float posture; // 0f
+    private float size = 12f;
+    private float tracking; // 0f
+    private NumericShaper numericShaping; // null
+    private AffineTransform transform; // null == identity
+    private GraphicAttribute charReplacement; // null
+    private Paint foreground; // null
+    private Paint background; // null
+    private float justification = 1f;
+    private Object imHighlight; // null
+    // (can be either Attribute wrapping IMH, or IMH itself
+    private Font font; // here for completeness, don't actually use
+    private byte imUnderline = -1; // same default as underline
+    private byte superscript; // 0
+    private byte underline = -1; // arrgh, value for ON is 0
+    private byte runDirection = -2; // BIDI.DIRECTION_DEFAULT_LEFT_TO_RIGHT
+    private byte bidiEmbedding; // 0
+    private byte kerning; // 0
+    private byte ligatures; // 0
+    private boolean strikethrough; // false
+    private boolean swapColors; // false
+
+    private AffineTransform baselineTransform; // derived from transform
+    private AffineTransform charTransform; // derived from transform
+
+    private static final AttributeValues DEFAULT = new AttributeValues();
+
+    // type-specific API
+    public String getFamily() { return family; }
+    public void setFamily(String f) { this.family = f; update(EFAMILY); }
+
+    public float getWeight() { return weight; }
+    public void setWeight(float f) { this.weight = f; update(EWEIGHT); }
+
+    public float getWidth() { return width; }
+    public void setWidth(float f) { this.width = f; update(EWIDTH); }
+
+    public float getPosture() { return posture; }
+    public void setPosture(float f) { this.posture = f; update(EPOSTURE); }
+
+    public float getSize() { return size; }
+    public void setSize(float f) { this.size = f; update(ESIZE); }
+
+    public AffineTransform getTransform() { return transform; }
+    public void setTransform(AffineTransform f) {
+        this.transform = (f == null || f.isIdentity())
+            ? DEFAULT.transform
+            : new AffineTransform(f);
+        updateDerivedTransforms();
+        update(ETRANSFORM);
+    }
+    public void setTransform(TransformAttribute f) {
+        this.transform = (f == null || f.isIdentity())
+            ? DEFAULT.transform
+            : f.getTransform();
+        updateDerivedTransforms();
+        update(ETRANSFORM);
+    }
+
+    public int getSuperscript() { return superscript; }
+    public void setSuperscript(int f) {
+      this.superscript = (byte)f; update(ESUPERSCRIPT); }
+
+    public Font getFont() { return font; }
+    public void setFont(Font f) { this.font = f; update(EFONT); }
+
+    public GraphicAttribute getCharReplacement() { return charReplacement; }
+    public void setCharReplacement(GraphicAttribute f) {
+      this.charReplacement = f; update(ECHAR_REPLACEMENT); }
+
+    public Paint getForeground() { return foreground; }
+    public void setForeground(Paint f) {
+      this.foreground = f; update(EFOREGROUND); }
+
+    public Paint getBackground() { return background; }
+    public void setBackground(Paint f) {
+      this.background = f; update(EBACKGROUND); }
+
+    public int getUnderline() { return underline; }
+    public void setUnderline(int f) {
+      this.underline = (byte)f; update(EUNDERLINE); }
+
+    public boolean getStrikethrough() { return strikethrough; }
+    public void setStrikethrough(boolean f) {
+      this.strikethrough = f; update(ESTRIKETHROUGH); }
+
+    public int getRunDirection() { return runDirection; }
+    public void setRunDirection(int f) {
+      this.runDirection = (byte)f; update(ERUN_DIRECTION); }
+
+    public int getBidiEmbedding() { return bidiEmbedding; }
+    public void setBidiEmbedding(int f) {
+      this.bidiEmbedding = (byte)f; update(EBIDI_EMBEDDING); }
+
+    public float getJustification() { return justification; }
+    public void setJustification(float f) {
+      this.justification = f; update(EJUSTIFICATION); }
+
+    public Object getInputMethodHighlight() { return imHighlight; }
+    public void setInputMethodHighlight(Annotation f) {
+      this.imHighlight = f; update(EINPUT_METHOD_HIGHLIGHT); }
+    public void setInputMethodHighlight(InputMethodHighlight f) {
+      this.imHighlight = f; update(EINPUT_METHOD_HIGHLIGHT); }
+
+    public int getInputMethodUnderline() { return imUnderline; }
+    public void setInputMethodUnderline(int f) {
+      this.imUnderline = (byte)f; update(EINPUT_METHOD_UNDERLINE); }
+
+    public boolean getSwapColors() { return swapColors; }
+    public void setSwapColors(boolean f) {
+      this.swapColors = f; update(ESWAP_COLORS); }
+
+    public NumericShaper getNumericShaping() { return numericShaping; }
+    public void setNumericShaping(NumericShaper f) {
+      this.numericShaping = f; update(ENUMERIC_SHAPING); }
+
+    public int getKerning() { return kerning; }
+    public void setKerning(int f) {
+      this.kerning = (byte)f; update(EKERNING); }
+
+    public float getTracking() { return tracking; }
+    public void setTracking(float f) {
+      this.tracking = (byte)f; update(ETRACKING); }
+
+    public int getLigatures() { return ligatures; }
+    public void setLigatures(int f) {
+      this.ligatures = (byte)f; update(ELIGATURES); }
+
+
+    public AffineTransform getBaselineTransform() { return baselineTransform; }
+    public AffineTransform getCharTransform() { return charTransform; }
+
+    // mask api
+
+    public static int getMask(EAttribute att) {
+        return att.mask;
+    }
+
+    public static int getMask(EAttribute ... atts) {
+        int mask = 0;
+        for (EAttribute a: atts) {
+            mask |= a.mask;
+        }
+        return mask;
+    }
+
+    public static final int MASK_ALL =
+        getMask(EAttribute.class.getEnumConstants());
+
+    public void unsetDefault() {
+        defined &= nondefault;
+    }
+
+    public void defineAll(int mask) {
+        defined |= mask;
+        if ((defined & EBASELINE_TRANSFORM.mask) != 0) {
+            throw new InternalError("can't define derived attribute");
+        }
+    }
+
+    public boolean allDefined(int mask) {
+        return (defined & mask) == mask;
+    }
+
+    public boolean anyDefined(int mask) {
+        return (defined & mask) != 0;
+    }
+
+    public boolean anyNonDefault(int mask) {
+        return (nondefault & mask) != 0;
+    }
+
+    // generic EAttribute API
+
+    public boolean isDefined(EAttribute a) {
+        return (defined & a.mask) != 0;
+    }
+
+    public boolean isNonDefault(EAttribute a) {
+        return (nondefault & a.mask) != 0;
+    }
+
+    public void setDefault(EAttribute a) {
+        if (a.att == null) {
+            throw new InternalError("can't set default derived attribute: " + a);
+        }
+        i_set(a, DEFAULT);
+        defined |= a.mask;
+        nondefault &= ~a.mask;
+    }
+
+    public void unset(EAttribute a) {
+        if (a.att == null) {
+            throw new InternalError("can't unset derived attribute: " + a);
+        }
+        i_set(a, DEFAULT);
+        defined &= ~a.mask;
+        nondefault &= ~a.mask;
+    }
+
+    public void set(EAttribute a, AttributeValues src) {
+        if (a.att == null) {
+            throw new InternalError("can't set derived attribute: " + a);
+        }
+        if (src == null || src == DEFAULT) {
+            setDefault(a);
+        } else {
+            if ((src.defined & a.mask) != 0) {
+                i_set(a, src);
+                update(a);
+            }
+        }
+    }
+
+    public void set(EAttribute a, Object o) {
+        if (a.att == null) {
+            throw new InternalError("can't set derived attribute: " + a);
+        }
+        if (o != null) {
+            try {
+                i_set(a, o);
+                update(a);
+                return;
+            } catch (Exception e) {
+            }
+        }
+        setDefault(a);
+    }
+
+    public Object get(EAttribute a) {
+        if (a.att == null) {
+            throw new InternalError("can't get derived attribute: " + a);
+        }
+        if ((nondefault & a.mask) != 0) {
+            return i_get(a);
+        }
+        return null;
+    }
+
+    // merging
+
+    public AttributeValues merge(Map<? extends Attribute, ?>map) {
+        return merge(map, MASK_ALL);
+    }
+
+    public AttributeValues merge(Map<? extends Attribute, ?>map,
+                                 int mask) {
+        if (map instanceof AttributeMap &&
+            ((AttributeMap) map).getValues() != null) {
+            merge(((AttributeMap)map).getValues(), mask);
+        } else if (map != null && !map.isEmpty()) {
+            for (Map.Entry<? extends Attribute, ?> e: map.entrySet()) {
+                try {
+                    EAttribute ea = EAttribute.forAttribute(e.getKey());
+                    if (ea!= null && (mask & ea.mask) != 0) {
+                        set(ea, e.getValue());
+                    }
+                } catch (ClassCastException cce) {
+                    // IGNORED
+                }
+            }
+        }
+        return this;
+    }
+
+    public AttributeValues merge(AttributeValues src) {
+        return merge(src, MASK_ALL);
+    }
+
+    public AttributeValues merge(AttributeValues src, int mask) {
+        int m = mask & src.defined;
+        for (EAttribute ea: EAttribute.atts) {
+            if (m == 0) {
+                break;
+            }
+            if ((m & ea.mask) != 0) {
+                m &= ~ea.mask;
+                i_set(ea, src);
+                update(ea);
+            }
+        }
+        return this;
+    }
+
+    // creation API
+
+    public static AttributeValues fromMap(Map<? extends Attribute, ?> map) {
+        return fromMap(map, MASK_ALL);
+    }
+
+    public static AttributeValues fromMap(Map<? extends Attribute, ?> map,
+                                          int mask) {
+        return new AttributeValues().merge(map, mask);
+    }
+
+    public Map<TextAttribute, Object> toMap(Map<TextAttribute, Object> fill) {
+        if (fill == null) {
+            fill = new HashMap<TextAttribute, Object>();
+        }
+
+        for (int m = defined, i = 0; m != 0; ++i) {
+            EAttribute ea = EAttribute.atts[i];
+            if ((m & ea.mask) != 0) {
+                m &= ~ea.mask;
+                fill.put(ea.att, get(ea));
+            }
+        }
+
+        return fill;
+    }
+
+    // key must be serializable, so use String, not Object
+    private static final String DEFINED_KEY =
+        "sun.font.attributevalues.defined_key";
+
+    public static boolean is16Hashtable(Hashtable<Object, Object> ht) {
+        return ht.containsKey(DEFINED_KEY);
+    }
+
+    public static AttributeValues
+    fromSerializableHashtable(Hashtable<Object, Object> ht)
+    {
+        AttributeValues result = new AttributeValues();
+        if (ht != null && !ht.isEmpty()) {
+            for (Map.Entry<Object, Object> e: ht.entrySet()) {
+                Object key = e.getKey();
+                Object val = e.getValue();
+                if (key.equals(DEFINED_KEY)) {
+                    result.defineAll(((Integer)val).intValue());
+                } else {
+                    try {
+                        EAttribute ea =
+                            EAttribute.forAttribute((Attribute)key);
+                        if (ea != null) {
+                            result.set(ea, val);
+                        }
+                    }
+                    catch (ClassCastException ex) {
+                    }
+                }
+            }
+        }
+        return result;
+    }
+
+    public Hashtable<Object, Object> toSerializableHashtable() {
+        Hashtable ht = new Hashtable();
+        int hashkey = defined;
+        for (int m = defined, i = 0; m != 0; ++i) {
+            EAttribute ea = EAttribute.atts[i];
+            if ((m & ea.mask) != 0) {
+                m &= ~ea.mask;
+                Object o = get(ea);
+                if (o == null) {
+                    // hashkey will handle it
+                } else if (o instanceof Serializable) { // check all...
+                    ht.put(ea.att, o);
+                } else {
+                    hashkey &= ~ea.mask;
+                }
+            }
+        }
+        ht.put(DEFINED_KEY, Integer.valueOf(hashkey));
+
+        return ht;
+    }
+
+    // boilerplate
+    public int hashCode() {
+        return defined << 8 ^ nondefault;
+    }
+
+    public boolean equals(Object rhs) {
+        try {
+            return equals((AttributeValues)rhs);
+        }
+        catch (ClassCastException e) {
+        }
+        return false;
+    }
+
+    public boolean equals(AttributeValues rhs) {
+        // test in order of most likely to differ and easiest to compare
+        // also assumes we're generally calling this only if family,
+        // size, weight, posture are the same
+
+        if (rhs == null) return false;
+        if (rhs == this) return true;
+
+        return defined == rhs.defined
+            && nondefault == rhs.nondefault
+            && underline == rhs.underline
+            && strikethrough == rhs.strikethrough
+            && superscript == rhs.superscript
+            && width == rhs.width
+            && kerning == rhs.kerning
+            && tracking == rhs.tracking
+            && ligatures == rhs.ligatures
+            && runDirection == rhs.runDirection
+            && bidiEmbedding == rhs.bidiEmbedding
+            && swapColors == rhs.swapColors
+            && equals(transform, rhs.transform)
+            && equals(foreground, rhs.foreground)
+            && equals(background, rhs.background)
+            && equals(numericShaping, rhs.numericShaping)
+            && equals(justification, rhs.justification)
+            && equals(charReplacement, rhs.charReplacement)
+            && size == rhs.size
+            && weight == rhs.weight
+            && posture == rhs.posture
+            && equals(family, rhs.family)
+            && equals(font, rhs.font)
+            && imUnderline == rhs.imUnderline
+            && equals(imHighlight, rhs.imHighlight);
+    }
+
+    public AttributeValues clone() {
+        try {
+            AttributeValues result = (AttributeValues)super.clone();
+            if (transform != null) { // AffineTransform is mutable
+                result.transform = new AffineTransform(transform);
+                result.updateDerivedTransforms();
+            }
+            // if transform is null, derived transforms are null
+            // so there's nothing to do
+            return result;
+        }
+        catch (CloneNotSupportedException e) {
+            // never happens
+            return null;
+        }
+    }
+
+    public String toString() {
+        StringBuilder b = new StringBuilder();
+        b.append('{');
+        for (int m = defined, i = 0; m != 0; ++i) {
+            EAttribute ea = EAttribute.atts[i];
+            if ((m & ea.mask) != 0) {
+                m &= ~ea.mask;
+                if (b.length() > 1) {
+                    b.append(", ");
+                }
+                b.append(ea);
+                b.append('=');
+                switch (ea) {
+                case EFAMILY: b.append('"');
+                  b.append(family);
+                  b.append('"'); break;
+                case EWEIGHT: b.append(weight); break;
+                case EWIDTH: b.append(width); break;
+                case EPOSTURE: b.append(posture); break;
+                case ESIZE: b.append(size); break;
+                case ETRANSFORM: b.append(transform); break;
+                case ESUPERSCRIPT: b.append(superscript); break;
+                case EFONT: b.append(font); break;
+                case ECHAR_REPLACEMENT: b.append(charReplacement); break;
+                case EFOREGROUND: b.append(foreground); break;
+                case EBACKGROUND: b.append(background); break;
+                case EUNDERLINE: b.append(underline); break;
+                case ESTRIKETHROUGH: b.append(strikethrough); break;
+                case ERUN_DIRECTION: b.append(runDirection); break;
+                case EBIDI_EMBEDDING: b.append(bidiEmbedding); break;
+                case EJUSTIFICATION: b.append(justification); break;
+                case EINPUT_METHOD_HIGHLIGHT: b.append(imHighlight); break;
+                case EINPUT_METHOD_UNDERLINE: b.append(imUnderline); break;
+                case ESWAP_COLORS: b.append(swapColors); break;
+                case ENUMERIC_SHAPING: b.append(numericShaping); break;
+                case EKERNING: b.append(kerning); break;
+                case ELIGATURES: b.append(ligatures); break;
+                case ETRACKING: b.append(tracking); break;
+                default: throw new InternalError();
+                }
+                if ((nondefault & ea.mask) == 0) {
+                    b.append('*');
+                }
+            }
+        }
+        b.append("[btx=" + baselineTransform + ", ctx=" + charTransform + "]");
+        b.append('}');
+        return b.toString();
+    }
+
+    // internal utilities
+
+    private static boolean equals(Object lhs, Object rhs) {
+        return lhs == null ? rhs == null : lhs.equals(rhs);
+    }
+
+    private void update(EAttribute a) {
+        defined |= a.mask;
+        if (i_validate(a)) {
+            if (i_equals(a, DEFAULT)) {
+                nondefault &= ~a.mask;
+            } else {
+                nondefault |= a.mask;
+            }
+        } else {
+            setDefault(a);
+        }
+    }
+
+    // dispatch
+
+    private void i_set(EAttribute a, AttributeValues src) {
+        switch (a) {
+        case EFAMILY: family = src.family; break;
+        case EWEIGHT: weight = src.weight; break;
+        case EWIDTH: width = src.width; break;
+        case EPOSTURE: posture = src.posture; break;
+        case ESIZE: size = src.size; break;
+        case ETRANSFORM: transform = src.transform; updateDerivedTransforms(); break;
+        case ESUPERSCRIPT: superscript = src.superscript; break;
+        case EFONT: font = src.font; break;
+        case ECHAR_REPLACEMENT: charReplacement = src.charReplacement; break;
+        case EFOREGROUND: foreground = src.foreground; break;
+        case EBACKGROUND: background = src.background; break;
+        case EUNDERLINE: underline = src.underline; break;
+        case ESTRIKETHROUGH: strikethrough = src.strikethrough; break;
+        case ERUN_DIRECTION: runDirection = src.runDirection; break;
+        case EBIDI_EMBEDDING: bidiEmbedding = src.bidiEmbedding; break;
+        case EJUSTIFICATION: justification = src.justification; break;
+        case EINPUT_METHOD_HIGHLIGHT: imHighlight = src.imHighlight; break;
+        case EINPUT_METHOD_UNDERLINE: imUnderline = src.imUnderline; break;
+        case ESWAP_COLORS: swapColors = src.swapColors; break;
+        case ENUMERIC_SHAPING: numericShaping = src.numericShaping; break;
+        case EKERNING: kerning = src.kerning; break;
+        case ELIGATURES: ligatures = src.ligatures; break;
+        case ETRACKING: tracking = src.tracking; break;
+        default: throw new InternalError();
+        }
+    }
+
+    private boolean i_equals(EAttribute a, AttributeValues src) {
+        switch (a) {
+        case EFAMILY: return equals(family, src.family);
+        case EWEIGHT: return weight == src.weight;
+        case EWIDTH: return width == src.width;
+        case EPOSTURE: return posture == src.posture;
+        case ESIZE: return size == src.size;
+        case ETRANSFORM: return equals(transform, src.transform);
+        case ESUPERSCRIPT: return superscript == src.superscript;
+        case EFONT: return equals(font, src.font);
+        case ECHAR_REPLACEMENT: return equals(charReplacement, src.charReplacement);
+        case EFOREGROUND: return equals(foreground, src.foreground);
+        case EBACKGROUND: return equals(background, src.background);
+        case EUNDERLINE: return underline == src.underline;
+        case ESTRIKETHROUGH: return strikethrough == src.strikethrough;
+        case ERUN_DIRECTION: return runDirection == src.runDirection;
+        case EBIDI_EMBEDDING: return bidiEmbedding == src.bidiEmbedding;
+        case EJUSTIFICATION: return justification == src.justification;
+        case EINPUT_METHOD_HIGHLIGHT: return equals(imHighlight, src.imHighlight);
+        case EINPUT_METHOD_UNDERLINE: return imUnderline == src.imUnderline;
+        case ESWAP_COLORS: return swapColors == src.swapColors;
+        case ENUMERIC_SHAPING: return equals(numericShaping, src.numericShaping);
+        case EKERNING: return kerning == src.kerning;
+        case ELIGATURES: return ligatures == src.ligatures;
+        case ETRACKING: return tracking == src.tracking;
+        default: throw new InternalError();
+        }
+    }
+
+    private void i_set(EAttribute a, Object o) {
+        switch (a) {
+        case EFAMILY: family = ((String)o).trim(); break;
+        case EWEIGHT: weight = ((Number)o).floatValue(); break;
+        case EWIDTH: width = ((Number)o).floatValue(); break;
+        case EPOSTURE: posture = ((Number)o).floatValue(); break;
+        case ESIZE: size = ((Number)o).floatValue(); break;
+        case ETRANSFORM: {
+            if (o instanceof TransformAttribute) {
+                TransformAttribute ta = (TransformAttribute)o;
+                if (ta.isIdentity()) {
+                    transform = null;
+                } else {
+                    transform = ta.getTransform();
+                }
+            } else {
+                transform = new AffineTransform((AffineTransform)o);
+            }
+            updateDerivedTransforms();
+        } break;
+        case ESUPERSCRIPT: superscript = (byte)((Integer)o).intValue(); break;
+        case EFONT: font = (Font)o; break;
+        case ECHAR_REPLACEMENT: charReplacement = (GraphicAttribute)o; break;
+        case EFOREGROUND: foreground = (Paint)o; break;
+        case EBACKGROUND: background = (Paint)o; break;
+        case EUNDERLINE: underline = (byte)((Integer)o).intValue(); break;
+        case ESTRIKETHROUGH: strikethrough = ((Boolean)o).booleanValue(); break;
+        case ERUN_DIRECTION: {
+            if (o instanceof Boolean) {
+                runDirection = (byte)(TextAttribute.RUN_DIRECTION_LTR.equals(o) ? 0 : 1);
+            } else {
+                runDirection = (byte)((Integer)o).intValue();
+            }
+        } break;
+        case EBIDI_EMBEDDING: bidiEmbedding = (byte)((Integer)o).intValue(); break;
+        case EJUSTIFICATION: justification = ((Number)o).floatValue(); break;
+        case EINPUT_METHOD_HIGHLIGHT: {
+            if (o instanceof Annotation) {
+                Annotation at = (Annotation)o;
+                imHighlight = (InputMethodHighlight)at.getValue();
+            } else {
+                imHighlight = (InputMethodHighlight)o;
+            }
+        } break;
+        case EINPUT_METHOD_UNDERLINE: imUnderline = (byte)((Integer)o).intValue();
+          break;
+        case ESWAP_COLORS: swapColors = ((Boolean)o).booleanValue(); break;
+        case ENUMERIC_SHAPING: numericShaping = (NumericShaper)o; break;
+        case EKERNING: kerning = (byte)((Integer)o).intValue(); break;
+        case ELIGATURES: ligatures = (byte)((Integer)o).intValue(); break;
+        case ETRACKING: tracking = ((Number)o).floatValue(); break;
+        default: throw new InternalError();
+        }
+    }
+
+    private Object i_get(EAttribute a) {
+        switch (a) {
+        case EFAMILY: return family;
+        case EWEIGHT: return Float.valueOf(weight);
+        case EWIDTH: return Float.valueOf(width);
+        case EPOSTURE: return Float.valueOf(posture);
+        case ESIZE: return Float.valueOf(size);
+        case ETRANSFORM:
+            return transform == null
+                ? TransformAttribute.IDENTITY
+                : new TransformAttribute(transform);
+        case ESUPERSCRIPT: return Integer.valueOf(superscript);
+        case EFONT: return font;
+        case ECHAR_REPLACEMENT: return charReplacement;
+        case EFOREGROUND: return foreground;
+        case EBACKGROUND: return background;
+        case EUNDERLINE: return Integer.valueOf(underline);
+        case ESTRIKETHROUGH: return Boolean.valueOf(strikethrough);
+        case ERUN_DIRECTION: {
+            switch (runDirection) {
+                // todo: figure out a way to indicate this value
+                // case -1: return Integer.valueOf(runDirection);
+            case 0: return TextAttribute.RUN_DIRECTION_LTR;
+            case 1: return TextAttribute.RUN_DIRECTION_RTL;
+            default: return null;
+            }
+        } // not reachable
+        case EBIDI_EMBEDDING: return Integer.valueOf(bidiEmbedding);
+        case EJUSTIFICATION: return Float.valueOf(justification);
+        case EINPUT_METHOD_HIGHLIGHT: return imHighlight;
+        case EINPUT_METHOD_UNDERLINE: return Integer.valueOf(imUnderline);
+        case ESWAP_COLORS: return Boolean.valueOf(swapColors);
+        case ENUMERIC_SHAPING: return numericShaping;
+        case EKERNING: return Integer.valueOf(kerning);
+        case ELIGATURES: return Integer.valueOf(ligatures);
+        case ETRACKING: return Float.valueOf(tracking);
+        default: throw new InternalError();
+        }
+    }
+
+    private boolean i_validate(EAttribute a) {
+        switch (a) {
+        case EFAMILY: if (family == null || family.length() == 0)
+          family = DEFAULT.family; return true;
+        case EWEIGHT: return weight > 0 && weight < 10;
+        case EWIDTH: return width >= .5f && width < 10;
+        case EPOSTURE: return posture >= -1 && posture <= 1;
+        case ESIZE: return size >= 0;
+        case ETRANSFORM: if (transform != null && transform.isIdentity())
+            transform = DEFAULT.transform; return true;
+        case ESUPERSCRIPT: return superscript >= -7 && superscript <= 7;
+        case EFONT: return true;
+        case ECHAR_REPLACEMENT: return true;
+        case EFOREGROUND: return true;
+        case EBACKGROUND: return true;
+        case EUNDERLINE: return underline >= -1 && underline < 6;
+        case ESTRIKETHROUGH: return true;
+        case ERUN_DIRECTION: return runDirection >= -2 && runDirection <= 1;
+        case EBIDI_EMBEDDING: return bidiEmbedding >= -61 && bidiEmbedding < 62;
+        case EJUSTIFICATION: justification = max(0, min (justification, 1));
+            return true;
+        case EINPUT_METHOD_HIGHLIGHT: return true;
+        case EINPUT_METHOD_UNDERLINE: return imUnderline >= -1 && imUnderline < 6;
+        case ESWAP_COLORS: return true;
+        case ENUMERIC_SHAPING: return true;
+        case EKERNING: return kerning >= 0 && kerning <= 1;
+        case ELIGATURES: return ligatures >= 0 && ligatures <= 1;
+        case ETRACKING: return tracking >= -1 && tracking <= 10;
+        default: throw new InternalError("unknown attribute: " + a);
+        }
+    }
+
+    // Until textlayout is fixed to use AttributeValues, we'll end up
+    // creating a map from the values for it.  This is a compromise between
+    // creating the whole map and just checking a particular value.
+    // Plan to remove these.
+    public static float getJustification(Map<?, ?> map) {
+        if (map != null) {
+            if (map instanceof AttributeMap &&
+                ((AttributeMap) map).getValues() != null) {
+                return ((AttributeMap)map).getValues().justification;
+            }
+            Object obj = map.get(TextAttribute.JUSTIFICATION);
+            if (obj != null && obj instanceof Number) {
+                return max(0, min(1, ((Number)obj).floatValue()));
+            }
+        }
+        return DEFAULT.justification;
+    }
+
+    public static NumericShaper getNumericShaping(Map<?, ?> map) {
+        if (map != null) {
+            if (map instanceof AttributeMap &&
+                ((AttributeMap) map).getValues() != null) {
+                return ((AttributeMap)map).getValues().numericShaping;
+            }
+            Object obj = map.get(TextAttribute.NUMERIC_SHAPING);
+            if (obj != null && obj instanceof NumericShaper) {
+                return (NumericShaper)obj;
+            }
+        }
+        return DEFAULT.numericShaping;
+    }
+
+    /**
+     * If this has an imHighlight, create copy of this with those attributes
+     * applied to it.  Otherwise return this unchanged.
+     */
+    public AttributeValues applyIMHighlight() {
+        if (imHighlight != null) {
+            InputMethodHighlight hl = null;
+            if (imHighlight instanceof InputMethodHighlight) {
+                hl = (InputMethodHighlight)imHighlight;
+            } else {
+                hl = (InputMethodHighlight)((Annotation)imHighlight).getValue();
+            }
+
+            Map imStyles = hl.getStyle();
+            if (imStyles == null) {
+                Toolkit tk = Toolkit.getDefaultToolkit();
+                imStyles = tk.mapInputMethodHighlight(hl);
+            }
+
+            if (imStyles != null) {
+                return clone().merge(imStyles);
+            }
+        }
+
+        return this;
+    }
+
+    public static AffineTransform getBaselineTransform(Map<?, ?> map) {
+        if (map != null) {
+            AttributeValues av = null;
+            if (map instanceof AttributeMap &&
+                ((AttributeMap) map).getValues() != null) {
+                av = ((AttributeMap)map).getValues();
+            } else if (map.get(TextAttribute.TRANSFORM) != null) {
+                av = AttributeValues.fromMap((Map<Attribute, ?>)map); // yuck
+            }
+            if (av != null) {
+                return av.baselineTransform;
+            }
+        }
+        return null;
+    }
+
+    public static AffineTransform getCharTransform(Map<?, ?> map) {
+        if (map != null) {
+            AttributeValues av = null;
+            if (map instanceof AttributeMap &&
+                ((AttributeMap) map).getValues() != null) {
+                av = ((AttributeMap)map).getValues();
+            } else if (map.get(TextAttribute.TRANSFORM) != null) {
+                av = AttributeValues.fromMap((Map<Attribute, ?>)map); // yuck
+            }
+            if (av != null) {
+                return av.charTransform;
+            }
+        }
+        return null;
+    }
+
+    public void updateDerivedTransforms() {
+        // this also updates the mask for the baseline transform
+        if (transform == null) {
+            baselineTransform = null;
+            charTransform = null;
+        } else {
+            charTransform = new AffineTransform(transform);
+            baselineTransform = extractXRotation(charTransform, true);
+
+            if (charTransform.isIdentity()) {
+              charTransform = null;
+            }
+
+            if (baselineTransform.isIdentity()) {
+              baselineTransform = null;
+            }
+        }
+
+        if (baselineTransform == null) {
+            nondefault &= ~EBASELINE_TRANSFORM.mask;
+        } else {
+            nondefault |= EBASELINE_TRANSFORM.mask;
+        }
+    }
+
+    public static AffineTransform extractXRotation(AffineTransform tx,
+                                                   boolean andTranslation) {
+        return extractRotation(new Point2D.Double(1, 0), tx, andTranslation);
+    }
+
+    public static AffineTransform extractYRotation(AffineTransform tx,
+                                                   boolean andTranslation) {
+        return extractRotation(new Point2D.Double(0, 1), tx, andTranslation);
+    }
+
+    private static AffineTransform extractRotation(Point2D.Double pt,
+        AffineTransform tx, boolean andTranslation) {
+
+        tx.deltaTransform(pt, pt);
+        AffineTransform rtx = AffineTransform.getRotateInstance(pt.x, pt.y);
+
+        try {
+            AffineTransform rtxi = rtx.createInverse();
+            tx.preConcatenate(rtxi);
+            if (andTranslation) {
+                double dx = tx.getTranslateX();
+                double dy = tx.getTranslateY();
+                if (dx != 0 || dy != 0) {
+                    tx.setTransform(tx.getScaleX(), tx.getShearY(),
+                                    tx.getShearX(), tx.getScaleY(), 0, 0);
+                    rtx.setTransform(rtx.getScaleX(), rtx.getShearY(),
+                                     rtx.getShearX(), rtx.getScaleY(), dx, dy);
+                }
+            }
+        }
+        catch (NoninvertibleTransformException e) {
+            return null;
+        }
+        return rtx;
+    }
+}