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/******************************************************************************
* Copyright (C) 2017 Kitsune Ral <kitsune-ral@users.sf.net>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "avatar.h"
#include "jobs/mediathumbnailjob.h"
#include "events/eventcontent.h"
#include "connection.h"
#include <QtGui/QPainter>
#include <QtCore/QPointer>
using namespace QMatrixClient;
class Avatar::Private
{
public:
Private(Connection* c, QIcon di) : _connection(c), _defaultIcon(di) { }
QImage get(QSize size, Avatar::notifier_t notifier) const;
Connection* _connection;
const QIcon _defaultIcon;
QUrl _url;
// The below are related to image caching, hence mutable
mutable QImage _originalImage;
mutable std::vector<QPair<QSize, QImage>> _scaledImages;
mutable QSize _requestedSize;
mutable bool _valid = false;
mutable QPointer<MediaThumbnailJob> _ongoingRequest = nullptr;
mutable std::vector<notifier_t> notifiers;
};
Avatar::Avatar(Connection* connection, QIcon defaultIcon)
: d(new Private { connection, std::move(defaultIcon) })
{ }
Avatar::~Avatar() = default;
QImage Avatar::get(int dimension, notifier_t notifier) const
{
return d->get({dimension, dimension}, notifier);
}
QImage Avatar::get(int width, int height, notifier_t notifier) const
{
return d->get({width, height}, notifier);
}
QImage Avatar::Private::get(QSize size, Avatar::notifier_t notifier) const
{
// FIXME: Alternating between longer-width and longer-height requests
// is a sure way to trick the below code into constantly getting another
// image from the server because the existing one is alleged unsatisfactory.
// This is plain abuse by the client, though; so not critical for now.
if( ( !(_valid || _ongoingRequest)
|| size.width() > _requestedSize.width()
|| size.height() > _requestedSize.height() ) && _url.isValid() )
{
qCDebug(MAIN) << "Getting avatar from" << _url.toString();
_requestedSize = size;
if (isJobRunning(_ongoingRequest))
_ongoingRequest->abandon();
notifiers.emplace_back(std::move(notifier));
_ongoingRequest = _connection->getThumbnail(_url, size);
QObject::connect( _ongoingRequest, &MediaThumbnailJob::success, [this]
{
_valid = true;
_originalImage = _ongoingRequest->scaledThumbnail(_requestedSize);
_scaledImages.clear();
for (auto n: notifiers)
n();
});
}
if( _originalImage.isNull() )
{
if (_defaultIcon.isNull())
return _originalImage;
QPainter p { &_originalImage };
_defaultIcon.paint(&p, { QPoint(), _defaultIcon.actualSize(size) });
}
for (auto p: _scaledImages)
if (p.first == size)
return p.second;
auto result = _originalImage.scaled(size,
Qt::KeepAspectRatio, Qt::SmoothTransformation);
_scaledImages.emplace_back(size, result);
return result;
}
QUrl Avatar::url() const { return d->_url; }
bool Avatar::updateUrl(const QUrl& newUrl)
{
if (newUrl == d->_url)
return false;
d->_url = newUrl;
d->_valid = false;
return true;
}
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