svgpart/svgpart.cpp

   1 /*
   2 Copyright 2007 Aurélien Gâteau
   3
   4 This program is free software; you can redistribute it and/or
   5 modify it under the terms of the GNU General Public License
   6 as published by the Free Software Foundation; either version 2
   7 of the License, or (at your option) any later version.
   8
   9 This program is distributed in the hope that it will be useful,
  10 but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 GNU General Public License for more details.
  13
  14 You should have received a copy of the GNU General Public License
  15 along with this program; if not, write to the Free Software
  16 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  17
  18 */
  19 #include "svgpart.moc"
  20
  21 // Qt
  22 #include <QGraphicsScene>
  23 #include <QGraphicsSvgItem>
  24 #include <QGraphicsView>
  25
  26 // KDE
  27 #include <kaboutdata.h>
  28 #include <kactioncollection.h>
  29 #include <kgenericfactory.h>
  30 #include <kstandardaction.h>
  31 #include <ksvgrenderer.h>
  32
  33 // Local
  34
  35 static KAboutData createAboutData()
  36 {
  37         KAboutData aboutData( "svgpart", 0, ki18n("SVG Part"),
  38                 "1.0", ki18n("A KPart to display SVG images"),
  39                 KAboutData::License_GPL,
  40                 ki18n("Copyright 2007, Aurélien Gâteau <aurelien.gateau@free.fr>"));
  41         return aboutData;
  42 }
  43
  44 //Factory Code
  45 K_PLUGIN_FACTORY( SvgPartFactory, registerPlugin< SvgPart >(); )
  46 K_EXPORT_PLUGIN( SvgPartFactory( createAboutData() ) )
  47
  48
  49 SvgPart::SvgPart(QWidget* parentWidget, QObject* parent, const QVariantList&)
  50 : KParts::ReadOnlyPart(parent)
  51 {
  52         mRenderer = new KSvgRenderer(this);
  53         mScene = new QGraphicsScene(this);
  54         mView = new QGraphicsView(mScene, parentWidget);
  55         mView->setFrameStyle(QFrame::NoFrame);
  56         mView->setDragMode(QGraphicsView::ScrollHandDrag);
  57         mItem = 0;
  58         setWidget(mView);
  59
  60         KStandardAction::actualSize(this, SLOT(zoomActualSize()), actionCollection());
  61         KStandardAction::zoomIn(this, SLOT(zoomIn()), actionCollection());
  62         KStandardAction::zoomOut(this, SLOT(zoomOut()), actionCollection());
  63         setXMLFile("svgpart/svgpart.rc");
  64 }
  65
  66
  67 bool SvgPart::openFile() {
  68         if (!mRenderer->load(localFilePath())) {
  69                 return false;
  70         }
  71         mItem = new QGraphicsSvgItem();
  72         mItem->setSharedRenderer(mRenderer);
  73         mScene->addItem(mItem);
  74         return true;
  75 }
  76
  77
  78 bool SvgPart::closeUrl() {
  79         delete mItem;
  80         mItem = 0;
  81         return KParts::ReadOnlyPart::closeUrl();
  82 }
  83
  84
  85 void SvgPart::zoomIn() {
  86         setZoom(zoom() * 2);
  87 }
  88
  89
  90 void SvgPart::zoomOut() {
  91         setZoom(zoom() / 2);
  92 }
  93
  94
  95 void SvgPart::zoomActualSize() {
  96         setZoom(1.0);
  97 }
  98
  99
 100 qreal SvgPart::zoom() const {
 101         return mView->matrix().m11();
 102 }
 103
 104
 105 void SvgPart::setZoom(qreal value) {
 106         QMatrix matrix;
 107         matrix.scale(value, value);
 108         mView->setMatrix(matrix);
 109 }