File indexing completed on 2025-06-29 04:09:32

 /***************************************************************************
  *                                                                         *
  *   copyright : (C) 2007 The University of Toronto                        *
  *                   netterfield@astro.utoronto.ca                         *
  *                                                                         *
  *   This program 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 of the License, or     *
  *   (at your option) any later version.                                   *
  *                                                                         *
  ***************************************************************************/
 
 #include "svgitem.h"
 #include "debug.h"
 #include "dialogdefaults.h"
 
 #include <QDebug>
 #include <QFileDialog>
 #include <QGraphicsScene>
 #include <QSvgRenderer>
 
 
 namespace Kst {
 
 SvgItem::SvgItem(View *parent, const QString &file)
   : ViewItem(parent) {
 
   if (!file.isNull()) {
     _svg = new QSvgRenderer(file);
     QFile svgfile(file);
     if (svgfile.open(QIODevice::ReadOnly | QIODevice::Text)) {
       while (!svgfile.atEnd()) {
           _svgData.append(svgfile.readLine());
       }
     }
   } else {
     _svg = new QSvgRenderer();
   }
   setTypeName(tr("Svg", "an svg picture"));
   setLockAspectRatio(true);
   //setLockAspectRatioFixed(true);
 }
 
 
 SvgItem::~SvgItem() {
 }
 
 
 void SvgItem::paint(QPainter *painter) {
   // We can do better here.  Cache the svg also.
   if (_svg->isValid() && rect().isValid()) {
     _svg->render(painter, rect());
   }
 }
 
 
 void SvgItem::save(QXmlStreamWriter &xml) {
   if (isVisible()) {
     xml.writeStartElement("svg");
     ViewItem::save(xml);
     xml.writeStartElement("data");
     xml.writeCharacters(qCompress(_svgData).toBase64());
     xml.writeEndElement();
     xml.writeEndElement();
   }
 }
 
 
 void SvgItem::creationPolygonChanged(View::CreationEvent event) {
 
   double aspect = 1.0;
   if ((_svg->defaultSize().width()>0) && (_svg->defaultSize().height()>0)) {
     aspect = double(_svg->defaultSize().width())/double(_svg->defaultSize().height());
   }
 
   creationPolygonChangedFixedAspect(event, aspect);
 
 }
 
 
 
 void SvgItem::setSvgData(const QByteArray &svgData) {
   _svg->load(svgData);
   _svgData = svgData;
 }
 
 void CreateSvgCommand::createItem() {
   QString start_dir = dialogDefaults().value("svg/startdir", ".").toString();
   QString filter = "SVG Images (*.svg *.SVG)";
   QString file = QFileDialog::getOpenFileName(_view, tr("Kst: Open SVG Image"), start_dir, filter);
 
   if (file.isEmpty())
     return;
 
   dialogDefaults().setValue("svg/startdir", QFileInfo(file).path());
   _item = new SvgItem(_view, file);
   _view->setCursor(Qt::CrossCursor);
 
   CreateCommand::createItem();
 }
 
 
 SvgItemFactory::SvgItemFactory()
 : GraphicsFactory() {
   registerFactory("svg", this);
 }
 
 
 SvgItemFactory::~SvgItemFactory() {
 }
 
 
 ViewItem* SvgItemFactory::generateGraphics(QXmlStreamReader& xml, ObjectStore *store, View *view, ViewItem *parent) {
   SvgItem *rc = 0;
   while (!xml.atEnd()) {
     bool validTag = true;
     if (xml.isStartElement()) {
       if (!rc && xml.name().toString() == "svg") {
         Q_ASSERT(!rc);
         rc = new SvgItem(view);
         if (parent) {
           rc->setParentViewItem(parent);
         }
         // Add any new specialized SvgItem Properties here.
       } else if (xml.name().toString() == "data") {
         Q_ASSERT(rc);
         xml.readNext();
         QByteArray qbca = QByteArray::fromBase64(xml.text().toString().toLatin1());
         rc->setSvgData(qUncompress(qbca));
         xml.readNext();
         if (!xml.isEndElement() || (xml.name().toString() != "data")) {
           validTag = false;
         }
         xml.readNext();
       } else {
         Q_ASSERT(rc);
         if (!rc->parse(xml, validTag) && validTag) {
           ViewItem *i = GraphicsFactory::parse(xml, store, view, rc);
           if (!i) {
           }
         }
       }
     } else if (xml.isEndElement()) {
       if (xml.name().toString() == "svg") {
         break;
       } else {
         validTag = false;
       }
     }
     if (!validTag) {
       qDebug("invalid Tag\n");
       Debug::self()->log(QObject::tr("Error creating svg object from Kst file."), Debug::Warning);
       delete rc;
       return 0;
     }
     xml.readNext();
   }
   return rc;
 }
 
 
 }
 
 // vim: ts=2 sw=2 et