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Diffstat (limited to 'libjava/classpath/javax/print/attribute/ResolutionSyntax.java')
| -rw-r--r-- | libjava/classpath/javax/print/attribute/ResolutionSyntax.java | 218 |
1 files changed, 218 insertions, 0 deletions
diff --git a/libjava/classpath/javax/print/attribute/ResolutionSyntax.java b/libjava/classpath/javax/print/attribute/ResolutionSyntax.java new file mode 100644 index 0000000..a7878c5 --- /dev/null +++ b/libjava/classpath/javax/print/attribute/ResolutionSyntax.java @@ -0,0 +1,218 @@ +/* ResolutionSyntax.java -- + Copyright (C) 2003, 2004 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 javax.print.attribute; + +import java.io.Serializable; + +/** + * @author Michael Koch + */ +public abstract class ResolutionSyntax + implements Cloneable, Serializable +{ + private static final long serialVersionUID = 2706743076526672017L; + + /** + * Constant for units of dots per centimeter. + */ + public static final int DPCM = 254; + + /** + * Constant for units of dots per inch + */ + public static final int DPI = 100; + + private int crossFeedResolution; + private int feedResolution; + + /** + * Creates a <code>ResolutionSyntax</code> object with the given arguments. + * + * @param crossFeedResolution the cross feed resolution + * @param feedResolution the feed resolution + * @param units the unit to use + * + * @exception IllegalArgumentException if preconditions fail + */ + public ResolutionSyntax(int crossFeedResolution, int feedResolution, + int units) + { + if (crossFeedResolution < 1 + || feedResolution < 1 + || units < 1) + throw new IllegalArgumentException("no argument may be less than 1"); + + this.crossFeedResolution = crossFeedResolution * units; + this.feedResolution = feedResolution * units; + } + + /** + * Tests of obj is equal to this object. + * + * @param obj the object to test + * + * @return true if both objects are equal, false otherwise. + */ + public boolean equals(Object obj) + { + if(! (obj instanceof ResolutionSyntax)) + return false; + + ResolutionSyntax tmp = (ResolutionSyntax) obj; + + return (crossFeedResolution == tmp.getCrossFeedResolutionDphi() + && feedResolution == tmp.getFeedResolutionDphi()); + } + + /** + * Returns the cross feed resolution in units. + * + * @return the resolution + * + * @exception IllegalArgumentException if units < 1 + */ + public int getCrossFeedResolution(int units) + { + if (units < 1) + throw new IllegalArgumentException("units may not be less then 1"); + + return (crossFeedResolution + units) / units; + } + + /** + * Returns the raw cross feed resolution in units. + * + * @return the raw resolution + */ + protected int getCrossFeedResolutionDphi() + { + return crossFeedResolution; + } + + /** + * Returns the feed resolution in units. + * + * @return the resolution + * + * @exception IllegalArgumentException if units < 1 + */ + public int getFeedResolution(int units) + { + if (units < 1) + throw new IllegalArgumentException("units may not be less then 1"); + + return (crossFeedResolution + units) / units; + } + + /** + * Returns the raw feed resolution in units. + * + * @return the raw resolution + */ + protected int getFeedResolutionDphi() + { + return feedResolution; + } + + /** + * Returns the resolution as two field array. Index 0 is the cross feed + * resolution, index 1 the feed resolution. + * + * @param units the units to use + * + * @return the array with the resolutions + */ + public int[] getResolution(int units) + { + int[] resolution = new int[2]; + resolution[0] = getCrossFeedResolution(units); + resolution[1] = getFeedResolution(units); + return resolution; + } + + /** + * Returns the hashcode for this object. + * + * @return the hashcode + */ + public int hashCode() + { + return crossFeedResolution + feedResolution; + } + + /** + * Checks of other is a lower or equal resolution. + * + * @param other the resolution to check against + * + * @return true if other describes a lower or equal resolution + */ + public boolean lessThanOrEquals(ResolutionSyntax other) + { + if (other == null) + throw new NullPointerException("other may not be null"); + + return (crossFeedResolution <= other.getCrossFeedResolutionDphi() + && feedResolution <= other.getFeedResolutionDphi()); + } + + /** + * Returns the string representation for this object. + * + * @return the string representation + */ + public String toString() + { + return toString(1, "dphi"); + } + + /** + * Returns the string representation for this object. + * + * @param units the units to use + * @param unitsName the name of the units + * + * @return the string representation + */ + public String toString(int units, String unitsName) + { + return ("" + getCrossFeedResolution(units) + + "x" + getFeedResolution(units) + + " " + unitsName); + } +} |