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/***************************************************************************
* Copyright (C) 2012 by Peter Penz <[email protected]> *
* *
* 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. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program; if not, write to the *
* Free Software Foundation, Inc., *
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA *
***************************************************************************/
#include "knepomukrolesprovider_p.h"
#include <KDebug>
#include <KGlobal>
#include <KLocale>
#include <Nepomuk/Resource>
#include <Nepomuk/Tag>
#include <Nepomuk/Types/Property>
#include <Nepomuk/Variant>
struct KNepomukRolesProviderSingleton
{
KNepomukRolesProvider instance;
};
K_GLOBAL_STATIC(KNepomukRolesProviderSingleton, s_nepomukRolesProvider)
KNepomukRolesProvider& KNepomukRolesProvider::instance()
{
return s_nepomukRolesProvider->instance;
}
KNepomukRolesProvider::~KNepomukRolesProvider()
{
}
bool KNepomukRolesProvider::isNepomukRole(const QByteArray& role) const
{
return m_roles.contains(role);
}
QHash<QByteArray, QVariant> KNepomukRolesProvider::roleValues(const Nepomuk::Resource& resource,
const QSet<QByteArray>& roles) const
{
if (!resource.isValid()) {
return QHash<QByteArray, QVariant>();
}
QHash<QByteArray, QVariant> values;
int width = -1;
int height = -1;
QHashIterator<QUrl, Nepomuk::Variant> it(resource.properties());
while (it.hasNext()) {
it.next();
const Nepomuk::Types::Property property = it.key();
const QByteArray role = m_roleForUri.value(property.uri());
if (role.isEmpty() || !roles.contains(role)) {
continue;
}
const Nepomuk::Variant value = it.value();
if (role == "imageSize") {
// Merge the two Nepomuk properties for width and height
// as one string into the "imageSize" role
const QString uri = property.uri().toString();
if (uri.endsWith("#width")) {
width = value.toInt();
} else if (uri.endsWith("#height")) {
height = value.toInt();
}
if (width >= 0 && height >= 0) {
const QString widthAndHeight = QString::number(width) +
QLatin1String(" x ") +
QString::number(height);
values.insert(role, widthAndHeight);
}
} else if (role == "tags") {
const QString tags = tagsFromValues(value.toStringList());
values.insert(role, tags);
} else if (role == "orientation") {
const QString orientation = orientationFromValue(value.toInt());
values.insert(role, orientation);
} else {
values.insert(role, value.toString());
}
}
// Assure that empty values get replaced by "-"
foreach (const QByteArray& role, roles) {
if (m_roles.contains(role) && values.value(role).toString().isEmpty()) {
values.insert(role, QLatin1String("-"));
}
}
return values;
}
KNepomukRolesProvider::KNepomukRolesProvider() :
m_roles(),
m_roleForUri()
{
struct UriInfo
{
const char* const uri;
const char* const role;
};
// Mapping from the URIs to the KFileItemModel roles. Note that this must not be
// a 1:1 mapping: One role may contain several URI-values (e.g. the URIs for height and
// width of an image are mapped to the role "imageSize")
static const UriInfo uriInfoList[] = {
{ "http://www.semanticdesktop.org/ontologies/2007/08/15/nao#numericRating", "rating" },
{ "http://www.semanticdesktop.org/ontologies/2007/08/15/nao#hasTag", "tags" },
{ "http://www.semanticdesktop.org/ontologies/2007/08/15/nao#description", "comment" },
{ "http://www.semanticdesktop.org/ontologies/2007/03/22/nfo#wordCount", "wordCount" },
{ "http://www.semanticdesktop.org/ontologies/2007/03/22/nfo#lineCount", "lineCount" },
{ "http://www.semanticdesktop.org/ontologies/2007/03/22/nfo#width", "imageSize" },
{ "http://www.semanticdesktop.org/ontologies/2007/03/22/nfo#height", "imageSize" },
{ "http://www.semanticdesktop.org/ontologies/2007/05/10/nexif#orientation", "orientation", },
{ "http://www.semanticdesktop.org/ontologies/2009/02/19/nmm#performer", "artist" },
{ "http://www.semanticdesktop.org/ontologies/2009/02/19/nmm#musicAlbum", "album" },
{ "http://www.semanticdesktop.org/ontologies/2007/03/22/nfo#duration", "duration" },
{ "http://www.semanticdesktop.org/ontologies/2009/02/19/nmm#trackNumber", "track" },
{ "http://www.semanticdesktop.org/ontologies/2010/04/30/ndo#copiedFrom", "copiedFrom" }
};
for (unsigned int i = 0; i < sizeof(uriInfoList) / sizeof(UriInfo); ++i) {
m_roleForUri.insert(QUrl(uriInfoList[i].uri), uriInfoList[i].role);
m_roles.insert(uriInfoList[i].role);
}
}
QString KNepomukRolesProvider::tagsFromValues(const QStringList& values) const
{
QString tags;
for (int i = 0; i < values.count(); ++i) {
if (i > 0) {
tags.append(QLatin1String(", "));
}
const Nepomuk::Tag tag(values[i]);
tags += tag.genericLabel();
}
return tags;
}
QString KNepomukRolesProvider::orientationFromValue(int value) const
{
QString string;
switch (value) {
case 1: string = i18nc("@item:intable Image orientation", "Unchanged"); break;
case 2: string = i18nc("@item:intable Image orientation", "Horizontally flipped"); break;
case 3: string = i18nc("@item:intable image orientation", "180° rotated"); break;
case 4: string = i18nc("@item:intable image orientation", "Vertically flipped"); break;
case 5: string = i18nc("@item:intable image orientation", "Transposed"); break;
case 6: string = i18nc("@item:intable image orientation", "90° rotated"); break;
case 7: string = i18nc("@item:intable image orientation", "Transversed"); break;
case 8: string = i18nc("@item:intable image orientation", "270° rotated"); break;
default:
break;
}
return string;
}
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