File indexing completed on 2024-05-12 17:04:39

 /*
 *  Copyright 2018  Michail Vourlakos <mvourlakos@gmail.com>
 *
 *  This file is part of Latte-Dock
 *
 *  Latte-Dock 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.
 *
 *  Latte-Dock 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, see <http://www.gnu.org/licenses/>.
 */
 
 #ifndef PLASMABACKGROUNDCACHE_H
 #define PLASMABACKGROUNDCACHE_H
 
 // local
 #include "screenpool.h"
 
 // Qt
 #include <QHash>
 #include <QObject>
 
 // Plasma
 #include <Plasma>
 
 // KDE
 #include <KConfigGroup>
 #include <KSharedConfig>
 
 struct imageHints {
     bool busy{false};
     float brightness{-1000};
 };
 
 typedef QHash<Plasma::Types::Location, imageHints> EdgesHash;
 
 namespace Latte {
 namespace PlasmaExtended {
 
 class BackgroundCache: public QObject
 {
     Q_OBJECT
 
 public:
     static BackgroundCache *self();
     ~BackgroundCache() override;
 
     bool busyFor(QString activity, QString screen, Plasma::Types::Location location);
     float brightnessFor(QString activity, QString screen, Plasma::Types::Location location);
 
     QString background(QString activity, QString screen);
 
     void setBackgroundFromBroadcast(QString activity, QString screen, QString filename);
     void setBroadcastedBackgroundsEnabled(QString activity, QString screen, bool enabled);
 
 signals:
     void backgroundChanged(const QString &activity, const QString &screenName);
 
 private slots:
     void reload();
     void settingsFileChanged(const QString &file);
 
 private:
     BackgroundCache(QObject *parent = nullptr);
 
     bool backgroundIsBroadcasted(QString activity, QString screenName);
     bool pluginExistsFor(QString activity, QString screenName);
     bool areaIsBusy(float bright1, float bright2);
     bool busyForFile(QString imageFile, Plasma::Types::Location location);
     bool isDesktopContainment(const KConfigGroup &containment) const;
 
     float brightnessForFile(QString imageFile, Plasma::Types::Location location);
     float brightnessFromArea(QImage &image, int firstRow, int firstColumn, int endRow, int endColumn);
     QString backgroundFromConfig(const KConfigGroup &config, QString wallpaperPlugin) const;
 
     void cleanupHashes();
     void updateImageCalculations(QString imageFile, Plasma::Types::Location location);
 
 private:
     bool m_initialized{false};
 
     QString m_defaultWallpaperPath;
 
     ScreenPool *m_pool{nullptr};
 
     //! screen aware backgrounds: activity id, screen name, backgroundfile
     QHash<QString, QHash<QString, QString>> m_backgrounds;
 
     //! plugin names tracked: activity id, screen name, pluginName
     QHash<QString, QHash<QString, QString>> m_plugins;
 
     //! backgrounds that are broadcasted (not found through plasma files):
     //! and have higher priority: activity id, screen names
     QHash<QString, QList<QString>> m_broadcasted;
 
     //! image file and brightness per edge
     QHash<QString, EdgesHash> m_hintsCache;
 
     KSharedConfig::Ptr m_plasmaConfig;
 };
 
 }
 }
 
 #endif