libs/flake/KoMarker.cpp

0001 /* This file is part of the KDE project
0002    Copyright (C) 2011 Thorsten Zachmann <zachmann@kde.org>
0003
0004    This library is free software; you can redistribute it and/or
0005    modify it under the terms of the GNU Library General Public
0006    License as published by the Free Software Foundation; either
0007    version 2 of the License, or (at your option) any later version.
0008
0009    This library is distributed in the hope that it will be useful,
0010    but WITHOUT ANY WARRANTY; without even the implied warranty of
0011    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
0012    Library General Public License for more details.
0013
0014    You should have received a copy of the GNU Library General Public License
0015    along with this library; see the file COPYING.LIB.  If not, write to
0016    the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
0017  * Boston, MA 02110-1301, USA.
0018 */
0019
0020 #include "KoMarker.h"
0021
0022 #include <KoXmlReader.h>
0023 #include <KoXmlNS.h>
0024 #include <KoGenStyle.h>
0025 #include <KoGenStyles.h>
0026 #include "KoPathShape.h"
0027 #include "KoPathShapeLoader.h"
0028 #include "KoShapeLoadingContext.h"
0029 #include "KoShapeSavingContext.h"
0030 #include "KoOdfWorkaround.h"
0031
0032 #include <QString>
0033 #include <QUrl>
0034 #include <QPainterPath>
0035
0036 class Q_DECL_HIDDEN KoMarker::Private
0037 {
0038 public:
0039     Private()
0040     {}
0041
0042     QString name;
0043     QString d;
0044     QPainterPath path;
0045     QRect viewBox;
0046 };
0047
0048 KoMarker::KoMarker()
0049 : d(new Private())
0050 {
0051 }
0052
0053 KoMarker::~KoMarker()
0054 {
0055     delete d;
0056 }
0057
0058 bool KoMarker::loadOdf(const KoXmlElement &element, KoShapeLoadingContext &context)
0059 {
0060     Q_UNUSED(context);
0061     // A shape uses draw:marker-end="Arrow" draw:marker-end-width="0.686cm" draw:marker-end-center="true" which marker and how the marker is used
0062
0063     //<draw:marker draw:name="Arrow" svg:viewBox="0 0 20 30" svg:d="m10 0-10 30h20z"/>
0064     //<draw:marker draw:name="Arrowheads_20_1" draw:display-name="Arrowheads 1" svg:viewBox="0 0 10 10" svg:d="m0 0h10v10h-10z"/>
0065
0066     d->d =element.attributeNS(KoXmlNS::svg, "d");
0067     if (d->d.isEmpty()) {
0068         return false;
0069     }
0070
0071 #ifndef NWORKAROUND_ODF_BUGS
0072     KoOdfWorkaround::fixMarkerPath(d->d);
0073 #endif
0074
0075     KoPathShape pathShape;
0076     KoPathShapeLoader loader(&pathShape);
0077     loader.parseSvg(d->d, true);
0078
0079     d->path = pathShape.outline();
0080     d->viewBox = KoPathShape::loadOdfViewbox(element);
0081
0082     QString displayName(element.attributeNS(KoXmlNS::draw, "display-name"));
0083     if (displayName.isEmpty()) {
0084         displayName = element.attributeNS(KoXmlNS::draw, "name");
0085     }
0086     d->name = displayName;
0087     return true;
0088 }
0089
0090 QString KoMarker::saveOdf(KoShapeSavingContext &context) const
0091 {
0092     KoGenStyle style(KoGenStyle::MarkerStyle);
0093     style.addAttribute("draw:display-name", d->name);
0094     style.addAttribute("svg:d", d->d);
0095     const QString viewBox = QString::fromLatin1("%1 %2 %3 %4")
0096         .arg(d->viewBox.x()).arg(d->viewBox.y())
0097         .arg(d->viewBox.width()).arg(d->viewBox.height());
0098     style.addAttribute(QLatin1String("svg:viewBox"), viewBox);
0099     QString name = QString(QUrl::toPercentEncoding(d->name, "", " ")).replace('%', '_');
0100     return context.mainStyles().insert(style, name, KoGenStyles::DontAddNumberToName);
0101 }
0102
0103 QString KoMarker::name() const
0104 {
0105     return d->name;
0106 }
0107
0108 QPainterPath KoMarker::path(qreal width) const
0109 {
0110     if (!d->viewBox.isValid() || width == 0) {
0111         return QPainterPath();
0112     }
0113
0114     // TODO: currently the <min-x>, <min-y> properties of viewbox are ignored, why? OOo-compat?
0115     qreal height = width * d->viewBox.height() / d->viewBox.width();
0116
0117     QTransform transform;
0118     transform.scale(width / d->viewBox.width(), height / d->viewBox.height());
0119     return transform.map(d->path);
0120 }
0121
0122 bool KoMarker::operator==(const KoMarker &other) const
0123 {
0124     return (d->d == other.d->d && d->viewBox ==other.d->viewBox);
0125 }