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/*
* SPDX-FileCopyrightText: 2018-2019 Kai Uwe Broulik <kde@broulik.de>
*
* SPDX-License-Identifier: LGPL-2.1-only OR LGPL-3.0-only OR LicenseRef-KDE-Accepted-LGPL
*/
#include "opendocumentcreator.h"
#include "macros.h"
#include <QImage>
#include <QScopedPointer>
#include <QXmlStreamReader>
#include <KZip>
EXPORT_THUMBNAILER_WITH_JSON(OpenDocumentCreator, "opendocumentthumbnail.json")
OpenDocumentCreator::OpenDocumentCreator() = default;
OpenDocumentCreator::~OpenDocumentCreator() = default;
bool OpenDocumentCreator::create(const QString &path, int width, int height, QImage &image)
{
Q_UNUSED(width);
Q_UNUSED(height);
KZip zip(path);
if (!zip.open(QIODevice::ReadOnly)) {
return false;
}
// Open Document
const KArchiveEntry *entry = zip.directory()->entry(QStringLiteral("Thumbnails/thumbnail.png"));
if (entry && entry->isFile()) {
const KZipFileEntry *zipFileEntry = static_cast<const KZipFileEntry *>(entry);
if (image.loadFromData(zipFileEntry->data(), "PNG")) {
return true;
}
}
// Open Packaging Conventions (e.g. Office "Open" XML)
const KArchiveEntry *relsEntry = zip.directory()->entry(QStringLiteral("_rels/.rels"));
if (relsEntry && relsEntry->isFile()) {
const auto *relsFileEntry = static_cast<const KZipFileEntry *>(relsEntry);
QScopedPointer<QIODevice> relsDevice(relsFileEntry->createDevice());
QString thumbnailPath;
QXmlStreamReader xml(relsDevice.data());
while (!xml.atEnd() && !xml.hasError()) {
xml.readNext();
if (xml.isStartElement() && xml.name() == QLatin1String("Relationship")) {
const auto attributes = xml.attributes();
if (attributes.value(QStringLiteral("Type")) == QLatin1String("http://schemas.openxmlformats.org/package/2006/relationships/metadata/thumbnail")) {
thumbnailPath = attributes.value(QStringLiteral("Target")).toString();
break;
}
}
}
if (!thumbnailPath.isEmpty()) {
const auto *thumbnailEntry = zip.directory()->entry(thumbnailPath);
if (thumbnailEntry && thumbnailEntry->isFile()) {
return image.loadFromData(static_cast<const KZipFileEntry *>(thumbnailEntry)->data());
}
}
}
return false;
}
#include "opendocumentcreator.moc"
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