98 lines
2.3 KiB
C++
98 lines
2.3 KiB
C++
/* This file is part of Clementine.
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Clementine is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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Clementine is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with Clementine. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef ALBUMCOVERLOADER_H
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#define ALBUMCOVERLOADER_H
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#include "backgroundthread.h"
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#include <QObject>
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#include <QImage>
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#include <QMutex>
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#include <QQueue>
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class NetworkAccessManager;
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class QNetworkReply;
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class AlbumCoverLoader : public QObject {
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Q_OBJECT
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public:
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AlbumCoverLoader(QObject* parent = 0);
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void SetNetwork(NetworkAccessManager* network) { network_ = network; }
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void Stop() { stop_requested_ = true; }
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static QString ImageCacheDir();
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void SetDesiredHeight(int height) { height_ = height; }
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quint64 LoadImageAsync(const QString& art_automatic, const QString& art_manual);
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void Clear();
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static QPixmap TryLoadPixmap(const QString& automatic, const QString& manual);
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static const char* kManuallyUnsetCover;
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signals:
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void ImageLoaded(quint64 id, const QImage& image);
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private slots:
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void ProcessTasks();
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void RemoteFetchFinished(quint64 id, QNetworkReply* reply);
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private:
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enum State {
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State_TryingManual,
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State_TryingAuto,
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};
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struct Task {
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quint64 id;
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QString art_automatic;
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QString art_manual;
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State state;
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};
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struct TryLoadResult {
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TryLoadResult(bool async, bool success, const QImage i)
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: started_async(async), loaded_success(success), image(i) {}
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bool started_async;
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bool loaded_success;
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QImage image;
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};
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void ProcessTask(Task* task);
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void NextState(Task* task);
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TryLoadResult TryLoadImage(const Task& task);
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QImage ScaleAndPad(const QImage& image) const;
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bool stop_requested_;
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int height_;
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QMutex mutex_;
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QQueue<Task> tasks_;
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QMap<quint64, Task> remote_tasks_;
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quint64 next_id_;
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NetworkAccessManager* network_;
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};
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#endif // ALBUMCOVERLOADER_H
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