File indexing completed on 2024-05-19 05:21:53

0001 /*
0002  * Copyright (C) 2003 by Tomas Pospisek <tpo@sourcepole.ch>
0003  * Copyright (C) 2019  Alexander Potashev <aspotashev@gmail.com>
0004  *
0005  *   This program is free software; you can redistribute it and/or modify
0006  *   it under the terms of the GNU General Public License as published by
0007  *   the Free Software Foundation; either version 2 of the License, or
0008  *   (at your option) any later version.
0009  *
0010  *   This program is distributed in the hope that it will be useful,
0011  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
0012  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
0013  *   GNU General Public License for more details.
0014  *
0015  *   You should have received a copy of the GNU General Public License along
0016  *   with this program; if not, write to the
0017  *      Free Software Foundation, Inc.
0018  *      51 Franklin Street, Fifth Floor
0019  *      Boston, MA  02110-1301  USA.
0020  *
0021  */
0022 
0023 #ifndef KTIMETRACKER_DESKTOP_TRACKER_H
0024 #define KTIMETRACKER_DESKTOP_TRACKER_H
0025 
0026 #include <QObject>
0027 #include <QVector>
0028 
0029 #include "desktoplist.h"
0030 
0031 QT_BEGIN_NAMESPACE
0032 class QTimer;
0033 QT_END_NAMESPACE
0034 
0035 class Task;
0036 
0037 typedef QVector<Task *> TaskVector;
0038 const int maxDesktops = 20;
0039 
0040 /** A utility to associate tasks with desktops
0041  *  As soon as a desktop is activated/left - an signal is emitted for
0042  *  each task tracking that all tasks that want to track that desktop
0043  */
0044 
0045 class DesktopTracker : public QObject
0046 {
0047     Q_OBJECT
0048 
0049 public:
0050     DesktopTracker();
0051     /**
0052      * Start time tracking of tasks by virtual desktop.
0053      *
0054      * @returns A QString with the error message, in case of no error an empty QString.
0055      *
0056      */
0057     QString startTracking();
0058     void registerForDesktops( Task* task, DesktopList dl );
0059     int numDesktops = 0;
0060     int desktopCount() const { return m_desktopCount; }
0061 
0062 public Q_SLOTS:
0063     void handleDesktopChange(int desktop);
0064 
0065 private Q_SLOTS:
0066     void changeTimers();
0067 
0068 Q_SIGNALS:
0069     void reachedActiveDesktop(Task *task);
0070     void leftActiveDesktop(Task *task);
0071 
0072 private:
0073     // define vectors for at most 16 virtual desktops
0074     // E.g.: desktopTrackerStop[3] contains a vector with
0075     // all tasks to be notified, when switching to/from desk 3.
0076     TaskVector m_desktopTracker[maxDesktops];
0077     int m_previousDesktop = 0;
0078     int m_desktopCount;
0079     int m_desktop = 0;
0080     QTimer *m_timer;
0081 };
0082 
0083 #endif // KTIMETRACKER_DESKTOP_TRACKER_H