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- /*-- $Id$ --
-
- ============================================================================
- The Apache Software License, Version 1.1
- ============================================================================
-
- Copyright (C) 1999 The Apache Software Foundation. All rights reserved.
-
- Redistribution and use in source and binary forms, with or without modifica-
- tion, are permitted provided that the following conditions are met:
-
- 1. Redistributions of source code must retain the above copyright notice,
- this list of conditions and the following disclaimer.
-
- 2. Redistributions in binary form must reproduce the above copyright notice,
- this list of conditions and the following disclaimer in the documentation
- and/or other materials provided with the distribution.
-
- 3. The end-user documentation included with the redistribution, if any, must
- include the following acknowledgment: "This product includes software
- developed by the Apache Software Foundation (http://www.apache.org/)."
- Alternately, this acknowledgment may appear in the software itself, if
- and wherever such third-party acknowledgments normally appear.
-
- 4. The names "Fop" and "Apache Software Foundation" must not be used to
- endorse or promote products derived from this software without prior
- written permission. For written permission, please contact
- apache@apache.org.
-
- 5. Products derived from this software may not be called "Apache", nor may
- "Apache" appear in their name, without prior written permission of the
- Apache Software Foundation.
-
- THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES,
- INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
- FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
- APACHE SOFTWARE FOUNDATION OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
- INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLU-
- DING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
- OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
- ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
- THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
- This software consists of voluntary contributions made by many individuals
- on behalf of the Apache Software Foundation and was originally created by
- James Tauber <jtauber@jtauber.com>. For more information on the Apache
- Software Foundation, please see <http://www.apache.org/>.
-
- */
- package org.apache.fop.datatypes;
-
- import org.apache.fop.fo.Property;
- import org.apache.fop.messaging.MessageHandler;
-
- /**
- * a length quantity in XSL
- */
- public class Length {
-
- protected int millipoints = 0;
-
- protected double fontsize = 12;
-
- boolean auto = false;
-
- /**
- * set the length given a particular String specifying length and units
- */
- public Length (String len) {
- convert(len);
- }
-
- /**
- * set the length given a particular String specifying length and units,
- * and the font-size (necessary for an em)
- */
- public Length (String len, int fontsize) {
- this.fontsize = fontsize;
- convert(len);
- }
-
- /**
- * set the length given a particular multiplier and a length property
- */
- public Length (double multiplier, Property property) {
- this.millipoints = (int)(multiplier * property.getLength().mvalue());
- }
-
- protected void convert(String len) {
- /* convert the given length to a dimensionless integer representing
- points. */
-
- int assumed_resolution = 1; // points/pixel
-
- int l = len.length();
-
- if (l == 0) {
- MessageHandler.errorln("WARNING: empty length");
- this.millipoints = 0;
- } else if (len.equals("auto")) {
- this.auto = true;
- } else {
- String unit = len.substring(l-2);
- double dvalue =
- Double.valueOf(len.substring(0,(l-2))).doubleValue();
-
- if (unit.equals("in"))
- dvalue = dvalue * 72;
- else if (unit.equals("cm"))
- dvalue = dvalue * 28.35;
- else if (unit.equals("mm"))
- dvalue = dvalue * 2.84;
- else if (unit.equals("pt"))
- dvalue = dvalue;
- else if (unit.equals("pc"))
- dvalue = dvalue * 12;
- else if (unit.equals("em"))
- dvalue = dvalue * fontsize;
- else if (unit.equals("px"))
- dvalue = dvalue * assumed_resolution;
- else {
- dvalue = 0;
- MessageHandler.errorln("ERROR: unknown length units in "
- + len);
- }
-
- this.millipoints = (int) (dvalue * 1000);
- }
- }
-
- /**
- * return the length in 1/1000ths of a point
- */
- public int mvalue() {
- return millipoints;
- }
-
- public String toString() {
- String s = millipoints + "mpt";
- return s;
- }
- }
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