139 lines
3.9 KiB
Java
139 lines
3.9 KiB
Java
/* FontRenderContext.java
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Copyright (C) 2002, 2003 Free Software Foundation, Inc.
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This file is part of GNU Classpath.
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GNU Classpath is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU Classpath is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Classpath; see the file COPYING. If not, write to the
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Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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02110-1301 USA.
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Linking this library statically or dynamically with other modules is
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making a combined work based on this library. Thus, the terms and
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conditions of the GNU General Public License cover the whole
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combination.
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As a special exception, the copyright holders of this library give you
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permission to link this library with independent modules to produce an
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executable, regardless of the license terms of these independent
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modules, and to copy and distribute the resulting executable under
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terms of your choice, provided that you also meet, for each linked
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independent module, the terms and conditions of the license of that
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module. An independent module is a module which is not derived from
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or based on this library. If you modify this library, you may extend
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this exception to your version of the library, but you are not
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obligated to do so. If you do not wish to do so, delete this
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exception statement from your version. */
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package java.awt.font;
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import java.awt.geom.AffineTransform;
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/**
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* @author Michael Koch
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*/
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public class FontRenderContext
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{
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private AffineTransform affineTransform;
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private boolean isAntiAliased;
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private boolean usesFractionalMetrics;
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/**
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* Construct a new <code>FontRenderContext</code>.
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*/
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protected FontRenderContext()
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{
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// Do nothing here.
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}
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/**
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* Construct a new <code>FontRenderContext</code>.
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*/
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public FontRenderContext (AffineTransform tx, boolean isAntiAliased,
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boolean usesFractionalMetrics)
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{
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if (tx != null
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&& !tx.isIdentity ())
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{
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this.affineTransform = new AffineTransform (tx);
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}
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this.isAntiAliased = isAntiAliased;
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this.usesFractionalMetrics = usesFractionalMetrics;
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}
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public boolean equals (Object obj)
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{
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if (! (obj instanceof FontRenderContext))
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return false;
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return equals ((FontRenderContext) obj);
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}
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public boolean equals (FontRenderContext rhs)
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{
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if (rhs == null)
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return false;
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if (affineTransform == null && rhs.affineTransform != null
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|| affineTransform != null && rhs.affineTransform == null)
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return false;
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return ((affineTransform == rhs.affineTransform
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|| affineTransform.equals (rhs.getTransform ()))
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&& isAntiAliased == rhs.isAntiAliased ()
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&& usesFractionalMetrics == rhs.usesFractionalMetrics ());
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}
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/**
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* Retrieves the affine transform for scaling typographical points
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* to raster pixels.
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*
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* @return a clone of the transform object.
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*/
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public AffineTransform getTransform ()
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{
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if (affineTransform == null)
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return new AffineTransform ();
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else
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return new AffineTransform (affineTransform);
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}
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/**
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* Returns the hash code of the font render context.
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*/
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public int hashCode ()
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{
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int code = ( isAntiAliased ? 1 : 0 ) + ( usesFractionalMetrics ? 2 : 0 );
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if( affineTransform != null && !affineTransform.isIdentity() )
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code ^= affineTransform.hashCode();
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return code;
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}
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public boolean isAntiAliased ()
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{
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return isAntiAliased;
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}
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public boolean usesFractionalMetrics ()
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{
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return usesFractionalMetrics;
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}
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}
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