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/* This file is part of the KDE libraries
SPDX-FileCopyrightText: 2006 Pascal Létourneau <pascal.letourneau@kdemail.net>
SPDX-License-Identifier: LGPL-2.0-or-later
*/
#include "svgcreator.h"
#include <QImage>
#include <QPainter>
#include <QSvgRenderer>
#include <KPluginFactory>
K_PLUGIN_CLASS_WITH_JSON(SvgCreator, "svgthumbnail.json")
SvgCreator::SvgCreator(QObject *parent, const QVariantList &args)
: KIO::ThumbnailCreator(parent, args)
{
}
KIO::ThumbnailResult SvgCreator::create(const KIO::ThumbnailRequest &request)
{
QSvgRenderer r(request.url().toLocalFile());
if (!r.isValid())
return KIO::ThumbnailResult::fail();
// render using the correct ratio
auto defaultSize = r.defaultSize();
double ratio = 1.0;
if (defaultSize.height() < request.targetSize().height() && defaultSize.width() < request.targetSize().width()) {
// scale to output size if size is smaller than output
ratio = 1.0 * defaultSize.height() / defaultSize.width();
} else {
ratio = static_cast<double>(defaultSize.height()) / static_cast<double>(defaultSize.width());
}
int width = request.targetSize().width() * request.devicePixelRatio();
int height = request.targetSize().height() * request.devicePixelRatio();
if (defaultSize.height() > defaultSize.width())
height = qRound(width / ratio);
else
width = qRound(height / ratio);
QImage i(width, height, QImage::Format_ARGB32_Premultiplied);
i.fill(0);
QPainter p(&i);
r.render(&p, QRectF(QPointF(0, 0), QSizeF(width, height)));
return KIO::ThumbnailResult::pass(i);
}
#include "moc_svgcreator.cpp"
#include "svgcreator.moc"
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