-/*-- $Id$ --
+/*-- $Id$ --
============================================================================
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
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
+ James Tauber <jtauber@jtauber.com>. For more information on the Apache
Software Foundation, please see <http://www.apache.org/>.
-
+
*/
package org.apache.fop.datatypes;
* a TransformData quantity in XSL
*
* @author Keiron Liddle <keiron@aftexsw.com>
+ * modified Nov 14,2000 Mike Crowe <crowe@psilongbeach.com>
*/
public class TransformData {
- SVGAnimatedTransformList trans;
+ SVGAnimatedTransformList trans;
+
+ /**
+ * set the TransformData given a particular String specifying TransformData and units
+ */
+ public TransformData (String len) {
+ convert(len);
+ }
+
+
+ /**
+ * The following is taken from CR-SVG-20000802 7.6, Transform Attribute
+ * The value of the transform attribute is a <transform-list>, which is
+ * defined as a list of transform definitions, which are applied in the
+ * order provided. The individual transform definitions are separated by
+ * whitespace and/or a comma. The available types of transform
+ * definitions include:
+ *
+ * matrix(<a> <b> <c> <d> <e> <f>), which specifies a transformation in the
+ * form of a transformation matrix of six values.
+ * matrix(a,b,c,d,e,f) is equivalent to applying the transformation matrix
+ * [a b c d e f].
+ *
+ * translate(<tx> [<ty>]), which specifies a translation by tx and ty.
+ *
+ * scale(<sx> [<sy>]), which specifies a scale operation by sx and sy. If <sy>
+ * is not provided, it is assumed to be equal to <sx>.
+ *
+ * rotate(<rotate-angle> [<cx> <cy>]), which specifies a rotation by
+ * <rotate-angle> degrees about a given point.
+ * If optional parameters <cx> and <cy> are not supplied, the rotate is about
+ * the origin of the current user coordinate system. The
+ * operation corresponds to the matrix [cos(a) sin(a) -sin(a) cos(a) 0 0].
+ * If optional parameters <cx> and <cy> are supplied, the rotate is about the
+ * point (<cx>, <cy>). The operation represents the
+ * equivalent of the following specification: translate(<cx>, <cy>)
+ * rotate(<rotate-angle>) translate(-<cx>, -<cy>).
+ *
+ * skewX(<skew-angle>), which specifies a skew transformation along the
+ * x-axis.
+ * skewY(<skew-angle>), which specifies a skew transformation along the
+ * y-axis.
+ */
+ protected void convert(String len) {
+ Vector list = new Vector();
+ StringTokenizer st = new StringTokenizer(len, "()");
+ // need to check for unbalanced brackets
+ while (st.hasMoreTokens()) {
+ String str = st.nextToken();
+ String type = str.trim();
+ String value;
+ if (st.hasMoreTokens()) {
+ value = st.nextToken().trim();
+ SVGTransform transform = new SVGTransformImpl();
+
+ if (type.equals("matrix")) {
+ SVGMatrix matrix = new SVGMatrixImpl();
+ StringTokenizer mt =
+ new StringTokenizer(value, " ,\r\n-", true);
+ if (mt.hasMoreTokens())
+ matrix.setA(extractValue(mt));
+ if (mt.hasMoreTokens())
+ matrix.setB(extractValue(mt));
+ if (mt.hasMoreTokens())
+ matrix.setC(extractValue(mt));
+ if (mt.hasMoreTokens())
+ matrix.setD(extractValue(mt));
+ if (mt.hasMoreTokens())
+ matrix.setE(extractValue(mt));
+ if (mt.hasMoreTokens())
+ matrix.setF(extractValue(mt));
+ transform.setMatrix(matrix);
+ list.addElement(transform);
+ } else if (type.equals("translate")) {
+ float xlen = 0;
+ float ylen = 0;
+ StringTokenizer mt =
+ new StringTokenizer(value, " ,\r\n-", true);
+ if (mt.hasMoreTokens())
+ xlen = extractValue(mt);
+ if (mt.hasMoreTokens())
+ ylen = extractValue(mt);
+
+ transform.setTranslate(xlen, ylen);
+ list.addElement(transform);
+ } else if (type.equals("scale")) {
+ float xlen = 0;
+ float ylen = 0;
+ StringTokenizer mt =
+ new StringTokenizer(value, " ,\r\n-", true);
+
+ if (mt.hasMoreTokens())
+ xlen = extractValue(mt);
+ if (mt.hasMoreTokens())
+ ylen = extractValue(mt);
+ else
+ ylen = xlen;
+
+ transform.setScale(xlen, ylen);
+ list.addElement(transform);
+ } else if (type.equals("rotate")) {
+ SVGAngleImpl angle = new SVGAngleImpl();
+ angle.setValueAsString(value);
+
+ transform.setRotate(angle.getValue(), 0, 0);
+ list.addElement(transform);
+ } else if (type.equals("skewX")) {
+ SVGAngleImpl angle = new SVGAngleImpl();
+ angle.setValueAsString(value);
+
+ transform.setSkewX(angle.getValue());
+ list.addElement(transform);
+ } else if (type.equals("skewY")) {
+ SVGAngleImpl angle = new SVGAngleImpl();
+ angle.setValueAsString(value);
+
+ transform.setSkewY(angle.getValue());
+ list.addElement(transform);
+
+ } else {
+ MessageHandler.errorln(
+ "WARNING: Unknown Transform type : " + type);
+ }
+
+ }
+ }
+ if (list != null) {
+ SVGTransformList stl = new SVGTransformListImpl();
+ for (Enumeration e = list.elements(); e.hasMoreElements();) {
+ stl.appendItem((SVGTransform) e.nextElement());
+ }
+ trans = new SVGAnimatedTransformListImpl();
+ trans.setBaseVal(stl);
+ }
+ }
- /**
- * set the TransformData given a particular String specifying TransformData and units
- */
- public TransformData (String len) {
- convert(len);
- }
+ private float extractValue(StringTokenizer mt) {
+ String tok = mt.nextToken();
+ boolean neg = false;
+ while (tok.equals(" ") || tok.equals(",") || tok.equals("\n") ||
+ tok.equals("\r") || tok.equals("-")) {
+ if (tok.equals("-")) {
+ neg = true;
+ }
+ if (!mt.hasMoreTokens())
+ break;
+ tok = mt.nextToken();
+ }
+ if (neg)
+ tok = "-" + tok;
+ SVGLengthImpl length = new SVGLengthImpl();
+ length.setValueAsString(tok);
+ return(length.getValue());
+ }
- protected void convert(String len)
- {
- Vector list = new Vector();
- StringTokenizer st = new StringTokenizer(len, "()");
- // need to check for unbalanced brackets
- while(st.hasMoreTokens()) {
- String str = st.nextToken();
- String type = str.trim();
- String value;
- if(st.hasMoreTokens()) {
- value = st.nextToken().trim();
- SVGTransform transform = new SVGTransformImpl();
- if(type.equals("translate")) {
- float xlen = 0;
- float ylen = 0;
- int pos = value.indexOf(",");
- if(pos != -1) {
- SVGLengthImpl length;
- length = new SVGLengthImpl();
- length.setValueAsString(value.substring(0, pos).trim());
- xlen = length.getValue();
- length = new SVGLengthImpl();
- length.setValueAsString(value.substring(pos + 1, value.length()).trim());
- ylen = length.getValue();
- }
- transform.setTranslate(xlen, ylen);
- list.addElement(transform);
- } else if(type.equals("skewX")) {
-// SVGAngleImpl angle = new SVGAngleImpl();
-// angle.setValueAsString(value);
- float angle = Float.valueOf(value).floatValue();
- transform.setSkewX(angle);
- list.addElement(transform);
- } else if(type.equals("skewY")) {
- // SVGAngleImpl angle = new SVGAngleImpl();
-// angle.setValueAsString(value);
- float angle = Float.valueOf(value).floatValue();
- transform.setSkewY(angle);
- list.addElement(transform);
- } else if(type.equals("scale")) {
- float xlen = 0;
- float ylen = 0;
- int pos = value.indexOf(",");
- if(pos != -1) {
-// try {
- xlen = Float.valueOf(value.substring(0, pos).trim()).floatValue();
-// } catch(Exception e) {
-// }
-// try {
- ylen = Float.valueOf(value.substring(pos + 1, value.length()).trim()).floatValue();
-// } catch(Exception e) {
-// }
- transform.setScale(xlen, ylen);
- } else {
- xlen = Float.valueOf(value).floatValue();
- transform.setScale(xlen, xlen);
- }
- list.addElement(transform);
- } else if(type.equals("rotate")) {
- // SVGAngleImpl angle = new SVGAngleImpl();
-// angle.setValueAsString(value);
- float angle = Float.valueOf(value).floatValue();
- transform.setRotate(angle, 0, 0);
- list.addElement(transform);
- } else if(type.equals("matrix")) {
- SVGMatrix matrix = new SVGMatrixImpl();
- StringTokenizer mt = new StringTokenizer(value, " ,\r\n-", true);
- // need to handle negatives
- String tok;
- boolean neg = false;
- if(mt.hasMoreTokens()) {
- tok = mt.nextToken();
- while(tok.equals(" ") || tok.equals(",") || tok.equals("\n") || tok.equals("\r") || tok.equals("-")) {
- if(tok.equals("-")) {
- neg = true;
- }
- if(!mt.hasMoreTokens())
- break;
- tok = mt.nextToken();
- }
- float floatVal = Float.valueOf(tok).floatValue();
- if(neg)
- floatVal = -floatVal;
- matrix.setA(floatVal);
- }
- if(mt.hasMoreTokens()) {
- tok = mt.nextToken();
- while(tok.equals(" ") || tok.equals(",") || tok.equals("\n") || tok.equals("\r") || tok.equals("-")) {
- if(tok.equals("-")) {
- neg = true;
- }
- if(!mt.hasMoreTokens())
- break;
- tok = mt.nextToken();
- }
- float floatVal = Float.valueOf(tok).floatValue();
- if(neg)
- floatVal = -floatVal;
- matrix.setB(floatVal);
- }
- if(mt.hasMoreTokens()) {
- tok = mt.nextToken();
- while(tok.equals(" ") || tok.equals(",") || tok.equals("\n") || tok.equals("\r") || tok.equals("-")) {
- if(tok.equals("-")) {
- neg = true;
- }
- if(!mt.hasMoreTokens())
- break;
- tok = mt.nextToken();
- }
- float floatVal = Float.valueOf(tok).floatValue();
- if(neg)
- floatVal = -floatVal;
- matrix.setC(floatVal);
- }
- if(mt.hasMoreTokens()) {
- tok = mt.nextToken();
- while(tok.equals(" ") || tok.equals(",") || tok.equals("\n") || tok.equals("\r") || tok.equals("-")) {
- if(tok.equals("-")) {
- neg = true;
- }
- if(!mt.hasMoreTokens())
- break;
- tok = mt.nextToken();
- }
- float floatVal = Float.valueOf(tok).floatValue();
- if(neg)
- floatVal = -floatVal;
- matrix.setD(floatVal);
- }
- SVGLengthImpl length;
- if(mt.hasMoreTokens()) {
- tok = mt.nextToken();
- while(tok.equals(" ") || tok.equals(",") || tok.equals("\n") || tok.equals("\r") || tok.equals("-")) {
- if(tok.equals("-")) {
- neg = true;
- }
- if(!mt.hasMoreTokens())
- break;
- tok = mt.nextToken();
- }
- float floatVal = Float.valueOf(tok).floatValue();
- if(neg)
- floatVal = -floatVal;
-// if(neg)
-// tok = "-" + tok;
-// length = new SVGLengthImpl();
-// length.setValueAsString(tok);
- matrix.setE(floatVal);
- }
- if(mt.hasMoreTokens()) {
- tok = mt.nextToken();
- while(tok.equals(" ") || tok.equals(",") || tok.equals("\n") || tok.equals("\r") || tok.equals("-")) {
- if(tok.equals("-")) {
- neg = true;
- }
- if(!mt.hasMoreTokens())
- break;
- tok = mt.nextToken();
- }
- float floatVal = Float.valueOf(tok).floatValue();
- if(neg)
- floatVal = -floatVal;
-// if(neg)
-// tok = "-" + tok;
-// length = new SVGLengthImpl();
-// length.setValueAsString(tok);
- matrix.setF(floatVal);
- }
- transform.setMatrix(matrix);
- list.addElement(transform);
- } else {
- MessageHandler.errorln("WARNING: Unknown Transform type : " + type);
- }
- }
- }
- if(list != null) {
- SVGTransformList stl = new SVGTransformListImpl();
- for(Enumeration e = list.elements(); e.hasMoreElements(); ) {
- stl.appendItem((SVGTransform)e.nextElement());
- }
- trans = new SVGAnimatedTransformListImpl();
- trans.setBaseVal(stl);
- }
- }
- public SVGAnimatedTransformList getTransform()
- {
- return trans;
- }
+ public SVGAnimatedTransformList getTransform() {
+ return trans;
+ }
}
projects / xmlgraphics-fop.git / commitdiff