svgpart.cpp [kdegraphics/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	#include <QSvgRenderer>
26
27	// KDE
28	#include <kaboutdata.h>
29	#include <kactioncollection.h>
30	#include <kgenericfactory.h>
31	#include <kstandardaction.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 QSvgRenderer(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	}
110