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      1 /*
      2     Copyright (C) 2004, 2005, 2008 Nikolas Zimmermann <zimmermann (at) kde.org>
      3                   2004, 2005 Rob Buis <buis (at) kde.org>
      4 
      5     This library is free software; you can redistribute it and/or
      6     modify it under the terms of the GNU Library General Public
      7     License as published by the Free Software Foundation; either
      8     version 2 of the License, or (at your option) any later version.
      9 
     10     This library is distributed in the hope that it will be useful,
     11     but WITHOUT ANY WARRANTY; without even the implied warranty of
     12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     13     Library General Public License for more details.
     14 
     15     You should have received a copy of the GNU Library General Public License
     16     along with this library; see the file COPYING.LIB.  If not, write to
     17     the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
     18     Boston, MA 02110-1301, USA.
     19 */
     20 
     21 #include "config.h"
     22 
     23 #if ENABLE(SVG)
     24 #include "SVGTransformList.h"
     25 
     26 #include "AffineTransform.h"
     27 #include "SVGSVGElement.h"
     28 #include "SVGTransform.h"
     29 
     30 using namespace WebCore;
     31 
     32 SVGTransformList::SVGTransformList(const QualifiedName& attributeName)
     33     : SVGPODList<SVGTransform>(attributeName)
     34 {
     35 }
     36 
     37 SVGTransformList::~SVGTransformList()
     38 {
     39 }
     40 
     41 SVGTransform SVGTransformList::createSVGTransformFromMatrix(const AffineTransform& matrix) const
     42 {
     43     return SVGSVGElement::createSVGTransformFromMatrix(matrix);
     44 }
     45 
     46 SVGTransform SVGTransformList::consolidate()
     47 {
     48     ExceptionCode ec = 0;
     49     return initialize(concatenate(), ec);
     50 }
     51 
     52 SVGTransform SVGTransformList::concatenate() const
     53 {
     54     unsigned int length = numberOfItems();
     55     if (!length)
     56         return SVGTransform();
     57 
     58     AffineTransform matrix;
     59     ExceptionCode ec = 0;
     60     for (unsigned int i = 0; i < length; i++)
     61         matrix = getItem(i, ec).matrix() * matrix;
     62 
     63     return SVGTransform(matrix);
     64 }
     65 
     66 String SVGTransformList::valueAsString() const
     67 {
     68     // TODO: We may want to build a real transform string, instead of concatting to a matrix(...).
     69     SVGTransform transform = concatenate();
     70     if (transform.type() == SVGTransform::SVG_TRANSFORM_MATRIX) {
     71         AffineTransform matrix = transform.matrix();
     72         return String::format("matrix(%f %f %f %f %f %f)", matrix.a(), matrix.b(), matrix.c(), matrix.d(), matrix.e(), matrix.f());
     73     }
     74 
     75     return String();
     76 }
     77 
     78 #endif // ENABLE(SVG)
     79