Unity 8
windowstatestorage.h
1 /*
2  * Copyright 2015-2016 Canonical Ltd.
3  *
4  * This program is free software; you can redistribute it and/or modify
5  * it under the terms of the GNU Lesser General Public License as published by
6  * the Free Software Foundation; version 3.
7  *
8  * This program is distributed in the hope that it will be useful,
9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11  * GNU Lesser General Public License for more details.
12  *
13  * You should have received a copy of the GNU Lesser General Public License
14  * along with this program. If not, see <http://www.gnu.org/licenses/>.
15  */
16 
17 #include <QObject>
18 #include <QSqlDatabase>
19 #include <QMutex>
20 
21 // unity-api
22 #include <unity/shell/application/Mir.h>
23 
24 class WindowStateStorage: public QObject
25 {
26  Q_OBJECT
27 public:
28  enum WindowState {
29  WindowStateNormal = 1 << 0,
30  WindowStateMaximized = 1 << 1,
31  WindowStateMinimized = 1 << 2,
32  WindowStateFullscreen = 1 << 3,
33  WindowStateMaximizedLeft = 1 << 4,
34  WindowStateMaximizedRight = 1 << 5,
35  WindowStateMaximizedHorizontally = 1 << 6,
36  WindowStateMaximizedVertically = 1 << 7,
37  WindowStateMaximizedTopLeft = 1 << 8,
38  WindowStateMaximizedTopRight = 1 << 9,
39  WindowStateMaximizedBottomLeft = 1 << 10,
40  WindowStateMaximizedBottomRight = 1 << 11,
41  WindowStateRestored = 1 << 12
42  };
43  Q_ENUM(WindowState)
44  Q_DECLARE_FLAGS(WindowStates, WindowState)
45  Q_FLAG(WindowStates)
46 
47  WindowStateStorage(const QString& dbName = nullptr, QObject *parent = nullptr);
48  virtual ~WindowStateStorage();
49 
50  Q_INVOKABLE void saveState(const QString &windowId, WindowState state);
51  Q_INVOKABLE WindowState getState(const QString &windowId, WindowState defaultValue) const;
52 
53  Q_INVOKABLE void saveGeometry(const QString &windowId, const QRect &rect);
54  Q_INVOKABLE QRect getGeometry(const QString &windowId, const QRect &defaultValue) const;
55 
56  Q_INVOKABLE void saveStage(const QString &appId, int stage);
57  Q_INVOKABLE int getStage(const QString &appId, int defaultValue) const;
58 
59  Q_INVOKABLE Mir::State toMirState(WindowState state) const;
60 
61 private:
62  void initdb();
63 
64  void saveValue(const QString &queryString);
65  QSqlQuery getValue(const QString &queryString) const;
66 
67  static QMutex s_mutex;
68 
69  // NB: This is accessed from threads. Make sure to mutex it.
70  QSqlDatabase m_db;
71 };