Unity 8
ShellApplication.cpp
1 /*
2  * Copyright (C) 2015 Canonical, Ltd.
3  *
4  * This program is free software; you can redistribute it and/or modify
5  * it under the terms of the GNU 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 General Public License for more details.
12  *
13  * You should have received a copy of the GNU General Public License
14  * along with this program. If not, see <http://www.gnu.org/licenses/>.
15  */
16 
17 #include "ShellApplication.h"
18 
19 // Qt
20 #include <QLibrary>
21 #include <QProcess>
22 #include <QScreen>
23 
24 #include <QGSettings>
25 
26 #include <libintl.h>
27 
28 // libandroid-properties
29 #include <hybris/properties/properties.h>
30 
31 // local
32 #include <paths.h>
33 #include "CachingNetworkManagerFactory.h"
34 #include "UnityCommandLineParser.h"
35 #include "DebuggingController.h"
36 
37 ShellApplication::ShellApplication(int & argc, char ** argv, bool isMirServer)
38  : QGuiApplication(argc, argv)
39 {
40  setApplicationName(QStringLiteral("unity8"));
41  setOrganizationName(QStringLiteral("Canonical"));
42 
43  connect(this, &QGuiApplication::screenAdded, this, &ShellApplication::onScreenAdded);
44  connect(this, &QGuiApplication::screenRemoved, this, &ShellApplication::onScreenRemoved);
45 
46  setupQmlEngine(isMirServer);
47 
48  UnityCommandLineParser parser(*this);
49 
50  if (!parser.deviceName().isEmpty()) {
51  m_deviceName = parser.deviceName();
52  } else {
53  char buffer[200];
54  property_get("ro.product.device", buffer /* value */, "desktop" /* default_value*/);
55  m_deviceName = QString(buffer);
56  }
57  m_qmlArgs.setDeviceName(m_deviceName);
58 
59  m_qmlArgs.setMode(parser.mode());
60 
61  {
62  char buffer[200];
63  property_get("ubuntu.unity8.interactive_blur", buffer, "false");
64  m_qmlArgs.setInteractiveBlur(QString(buffer) == QStringLiteral("true"));
65  }
66 
67  // The testability driver is only loaded by QApplication but not by QGuiApplication.
68  // However, QApplication depends on QWidget which would add some unneeded overhead => Let's load the testability driver on our own.
69  if (parser.hasTestability() || getenv("QT_LOAD_TESTABILITY")) {
70  QLibrary testLib(QStringLiteral("qttestability"));
71  if (testLib.load()) {
72  typedef void (*TasInitialize)(void);
73  TasInitialize initFunction = (TasInitialize)testLib.resolve("qt_testability_init");
74  if (initFunction) {
75  initFunction();
76  } else {
77  qCritical("Library qttestability resolve failed!");
78  }
79  } else {
80  qCritical("Library qttestability load failed!");
81  }
82  }
83 
84  bindtextdomain("unity8", translationDirectory().toUtf8().data());
85  textdomain("unity8");
86 
87  QScopedPointer<QGSettings> gSettings(new QGSettings("com.canonical.Unity8"));
88  gSettings->reset(QStringLiteral("alwaysShowOsk"));
89 
90  m_shellView = new ShellView(m_qmlEngine, &m_qmlArgs);
91 
92  if (parser.windowGeometry().isValid()) {
93  m_shellView->setWidth(parser.windowGeometry().width());
94  m_shellView->setHeight(parser.windowGeometry().height());
95  }
96 
97  if (parser.hasFrameless()) {
98  m_shellView->setFlags(Qt::FramelessWindowHint);
99  }
100 
101 
102  #ifdef UNITY8_ENABLE_TOUCH_EMULATION
103  // You will need this if you want to interact with touch-only components using a mouse
104  // Needed only when manually testing on a desktop.
105  if (parser.hasMouseToTouch()) {
106  m_mouseTouchAdaptor = MouseTouchAdaptor::instance();
107  }
108  #endif
109 
110  new DebuggingController(this);
111 
112  // Some hard-coded policy for now.
113  // NB: We don't support more than two screens at the moment
114  //
115  // TODO: Support an arbitrary number of screens and different policies
116  // (eg cloned desktop, several desktops, etc)
117  if (isMirServer && screens().count() == 2) {
118  m_shellView->setScreen(screens().at(1));
119  m_qmlArgs.setDeviceName(QStringLiteral("desktop"));
120 
121  m_secondaryWindow = new SecondaryWindow(m_qmlEngine);
122  m_secondaryWindow->setScreen(screens().at(0));
123  // QWindow::showFullScreen() also calls QWindow::requestActivate() and we don't want that!
124  m_secondaryWindow->setWindowState(Qt::WindowFullScreen);
125  m_secondaryWindow->setVisible(true);
126  }
127 
128  if (parser.mode().compare("greeter") == 0) {
129  QSize primaryScreenSize = this->primaryScreen()->size();
130  m_shellView->setHeight(primaryScreenSize.height());
131  m_shellView->setWidth(primaryScreenSize.width());
132  m_shellView->show();
133  m_shellView->requestActivate();
134  if (!QProcess::startDetached("initctl emit --no-wait unity8-greeter-started")) {
135  qDebug() << "Unable to send unity8-greeter-started event to Upstart";
136  }
137  } else if (isMirServer || parser.hasFullscreen()) {
138  m_shellView->showFullScreen();
139  } else {
140  m_shellView->show();
141  }
142 }
143 
144 ShellApplication::~ShellApplication()
145 {
146  destroyResources();
147 }
148 
149 void ShellApplication::destroyResources()
150 {
151  // Deletion order is important. Don't use QScopedPointers and the like
152  // Otherwise the process will hang on shutdown (bug somewhere I guess).
153  delete m_shellView;
154  m_shellView = nullptr;
155 
156  delete m_secondaryWindow;
157  m_secondaryWindow = nullptr;
158 
159  #ifdef UNITY8_ENABLE_TOUCH_EMULATION
160  delete m_mouseTouchAdaptor;
161  m_mouseTouchAdaptor = nullptr;
162  #endif
163 
164  delete m_qmlEngine;
165  m_qmlEngine = nullptr;
166 }
167 
168 void ShellApplication::setupQmlEngine(bool isMirServer)
169 {
170  m_qmlEngine = new QQmlEngine(this);
171 
172  m_qmlEngine->setBaseUrl(QUrl::fromLocalFile(::qmlDirectory()));
173 
174  prependImportPaths(m_qmlEngine, ::overrideImportPaths());
175  if (!isMirServer) {
176  prependImportPaths(m_qmlEngine, ::nonMirImportPaths());
177  }
178  appendImportPaths(m_qmlEngine, ::fallbackImportPaths());
179 
180  m_qmlEngine->setNetworkAccessManagerFactory(new CachingNetworkManagerFactory);
181 
182  QObject::connect(m_qmlEngine, &QQmlEngine::quit, this, &QGuiApplication::quit);
183 }
184 
185 void ShellApplication::onScreenAdded(QScreen * /*screen*/)
186 {
187  // TODO: Support an arbitrary number of screens and different policies
188  // (eg cloned desktop, several desktops, etc)
189  if (screens().count() == 2) {
190  m_shellView->setScreen(screens().at(1));
191  m_qmlArgs.setDeviceName(QStringLiteral("desktop"));
192  // QWindow::destroy() is called when it changes between screens. We have to manually make it visible again
193  // <dandrader> This bug is supposedly fixed in Qt 5.5.1, although I can still reproduce it there. :-/
194  m_shellView->setVisible(true);
195 
196  m_secondaryWindow = new SecondaryWindow(m_qmlEngine);
197  m_secondaryWindow->setScreen(screens().at(0));
198 
199  // QWindow::showFullScreen() also calls QWindow::requestActivate() and we don't want that!
200  m_secondaryWindow->setWindowState(Qt::WindowFullScreen);
201  m_secondaryWindow->setVisible(true);
202 
203  // Changing the QScreen where a QWindow is drawn makes it also lose focus (besides having
204  // its backing QPlatformWindow recreated). So lets refocus it.
205  // This must be done after the creation of the SecondaryWindow, else
206  // the SecondaryWindow takes focus anyway.
207  m_shellView->requestActivate();
208  }
209 }
210 
211 void ShellApplication::onScreenRemoved(QScreen *screen)
212 {
213  // TODO: Support an arbitrary number of screens and different policies
214  // (eg cloned desktop, several desktops, etc)
215  if (screen == m_shellView->screen()) {
216  const QList<QScreen *> allScreens = screens();
217  Q_ASSERT(allScreens.count() > 1);
218  Q_ASSERT(allScreens.at(0) != screen);
219  Q_ASSERT(m_secondaryWindow);
220  delete m_secondaryWindow;
221  m_secondaryWindow = nullptr;
222  m_shellView->setScreen(allScreens.first());
223  m_qmlArgs.setDeviceName(m_deviceName);
224  // Changing the QScreen where a QWindow is drawn makes it also lose focus (besides having
225  // its backing QPlatformWindow recreated). So lets refocus it.
226  m_shellView->requestActivate();
227  // QWindow::destroy() is called when it changes between screens. We have to manually make it visible again
228  // <dandrader> This bug is supposedly fixed in Qt 5.5.1, although I can still reproduce it there. :-/
229  m_shellView->setVisible(true);
230  }
231 }