Notification improvements.

src/notifications/manager.h

@@ -0,0 +1,49 @@
+#pragma once
+
+#include <QImage>
+#include <QObject>
+#include <QString>
+
+#if defined(Q_OS_LINUX) || defined(Q_OS_FREEBSD)
+#include <QtDBus/QDBusArgument>
+#include <QtDBus/QDBusInterface>
+#endif
+
+struct roomEventId {
+  QString roomId;
+  QString eventId;
+};
+
+class NotificationsManager : public QObject {
+  Q_OBJECT
+ public:
+  NotificationsManager(QObject *parent = nullptr);
+
+  void postNotification(const QString &roomId, const QString &eventId,
+                        const QString &roomName, const QString &senderName,
+                        const QString &text, const QImage &icon);
+
+ signals:
+  void notificationClicked(const QString roomId, const QString eventId);
+
+#if defined(Q_OS_LINUX) || defined(Q_OS_FREEBSD)
+ private:
+  QDBusInterface dbus;
+  uint showNotification(const QString summary, const QString text,
+                        const QImage image);
+
+  // notification ID to (room ID, event ID)
+  QMap<uint, roomEventId> notificationIds;
+#endif
+
+  // these slots are platform specific (D-Bus only)
+  // but Qt slot declarations can not be inside an ifdef!
+ private slots:
+  void actionInvoked(uint id, QString action);
+  void notificationClosed(uint id, uint reason);
+};
+
+#if defined(Q_OS_LINUX) || defined(Q_OS_FREEBSD)
+QDBusArgument &operator<<(QDBusArgument &arg, const QImage &image);
+const QDBusArgument &operator>>(const QDBusArgument &arg, QImage &);
+#endif