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+/* TextCacheKey.java -- Key to use for caching texts with their rendered layout
+ Copyright (C) 2007 Free Software Foundation, Inc.
+
+This file is part of GNU Classpath.
+
+GNU Classpath is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2, or (at your option)
+any later version.
+
+GNU Classpath 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 for more details.
+
+You should have received a copy of the GNU General Public License
+along with GNU Classpath; see the file COPYING. If not, write to the
+Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+02110-1301 USA.
+
+Linking this library statically or dynamically with other modules is
+making a combined work based on this library. Thus, the terms and
+conditions of the GNU General Public License cover the whole
+combination.
+
+As a special exception, the copyright holders of this library give you
+permission to link this library with independent modules to produce an
+executable, regardless of the license terms of these independent
+modules, and to copy and distribute the resulting executable under
+terms of your choice, provided that you also meet, for each linked
+independent module, the terms and conditions of the license of that
+module. An independent module is a module which is not derived from
+or based on this library. If you modify this library, you may extend
+this exception to your version of the library, but you are not
+obligated to do so. If you do not wish to do so, delete this
+exception statement from your version. */
+
+package gnu.java.awt.java2d;
+
+import java.awt.Font;
+import java.awt.font.FontRenderContext;
+
+/**
+ * A key object to be used when caching pre-rendered text.
+ */
+public class TextCacheKey
+{
+
+ /**
+ * The actual string.
+ */
+ private String string;
+
+ /**
+ * The font render context.
+ */
+ private FontRenderContext fontRenderContext;
+
+ /**
+ * The font.
+ */
+ private Font font;
+
+ /**
+ * Creates a new TextCacheKey.
+ *
+ * This is intended to be used as search key. It is important to initialize
+ * the values using the setter methods before using this key, otherwise
+ * it will throw NPEs.
+ */
+ public TextCacheKey()
+ {
+ // No-arg constructor.
+ }
+
+ /**
+ * Creates a new TextCacheKey with initial values.
+ *
+ * @param s the string
+ * @param f the font
+ * @param frc the font render context
+ */
+ public TextCacheKey(String s, Font f, FontRenderContext frc)
+ {
+ string = s;
+ font = f;
+ fontRenderContext = frc;
+ }
+
+ /**
+ * Re-sets the string. This is intented to be used in search keys only.
+ *
+ * @param s the string to set
+ */
+ public void setString(String s)
+ {
+ string = s;
+ }
+
+ /**
+ * Sets the font render context.
+ * This is intented to be used in search keys only.
+ *
+ * @param frc the new font render context
+ */
+ public void setFontRenderContext(FontRenderContext frc)
+ {
+ fontRenderContext = frc;
+ }
+
+ /**
+ * Sets the font.
+ * This is intented to be used in search keys only.
+ *
+ * @param f the font to set
+ */
+ public void setFont(Font f)
+ {
+ font = f;
+ }
+
+ /**
+ * Determines if two objects are equal.
+ *
+ * @see Object#equals(Object)
+ */
+ public boolean equals(Object o)
+ {
+ boolean eq;
+ if (o instanceof TextCacheKey)
+ {
+ TextCacheKey other = (TextCacheKey) o;
+ eq = other.string.equals(string)
+ && other.font.equals(font)
+ && other.fontRenderContext.equals(fontRenderContext);
+ }
+ else
+ {
+ eq = false;
+ }
+ return eq;
+ }
+
+ /**
+ * Computes a hashcode for this key.
+ *
+ * @see Object#hashCode()
+ */
+ public int hashCode()
+ {
+ return string.hashCode() ^ font.hashCode() ^ fontRenderContext.hashCode();
+ }
+}