git.maemo.org Git - presencevnc/blob - src/mainwindow.cpp

   1 /*
   2     Presence VNC
   3     Copyright (C) 2010 Christian Pulvermacher
   4
   5     This program is free software; you can redistribute it and/or modify
   6     it under the terms of the GNU General Public License as published by
   7     the Free Software Foundation; either version 2 of the License, or
   8     (at your option) any later version.
   9
  10     This program is distributed in the hope that it will be useful,
  11     but WITHOUT ANY WARRANTY; without even the implied warranty of
  12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13     GNU General Public License for more details.
  14
  15     You should have received a copy of the GNU General Public License along
  16     with this program; if not, write to the Free Software Foundation, Inc.,
  17     51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18 */
  19 #include "connectdialog.h"
  20 #include "fullscreenexitbutton.h"
  21 #include "keymenu.h"
  22 #include "mainwindow.h"
  23 #include "preferences.h"
  24 #include "vncview.h"
  25
  26 #ifdef Q_WS_HILDON
  27 #include <QtMaemo5>
  28 #include <QX11Info>
  29
  30 #include <X11/Xlib.h>
  31 #include <X11/Xatom.h>
  32 #endif
  33
  34
  35 MainWindow::MainWindow(QString url, int quality):
  36         QMainWindow(0),
  37         vnc_view(0),
  38         scroll_area(new ScrollArea(0))
  39 {
  40         setWindowTitle("Presence VNC");
  41
  42         migrateConfiguration();
  43         QSettings settings;
  44
  45 #ifdef Q_WS_HILDON
  46         setAttribute(Qt::WA_Maemo5StackedWindow);
  47 #endif
  48
  49         //set up toolbar
  50         toolbar = new QToolBar(0);
  51         toolbar->addAction(QChar(0x2026), this, SLOT(showKeyMenu())); //"..." button
  52         toolbar->addAction(tr("Tab"), this, SLOT(sendTab()));
  53         toolbar->addAction(tr("Esc"), this, SLOT(sendEsc()));
  54         toolbar->addAction(tr("PgUp"), this, SLOT(sendPgUp()));
  55         toolbar->addAction(tr("PgDn"), this, SLOT(sendPgDn()));
  56 #ifdef Q_WS_HILDON
  57         toolbar->addAction(QIcon("/usr/share/icons/hicolor/48x48/hildon/chat_enter.png"), "", this, SLOT(sendReturn()));
  58         toolbar->addAction(QIcon("/usr/share/icons/hicolor/48x48/hildon/control_keyboard.png"), "", this, SLOT(showInputPanel()));
  59 #endif
  60
  61         //move fullscreen button to the right
  62         QWidget *spacer = new QWidget();
  63         spacer->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
  64         toolbar->addWidget(spacer);
  65
  66         toolbar->addAction(QIcon("/usr/share/icons/hicolor/48x48/hildon/general_fullsize.png"), "", this, SLOT(toggleFullscreen()));
  67         addToolBar(toolbar);
  68         toolbar->setVisible(settings.value("show_toolbar", true).toBool());
  69
  70         //set up menu
  71         QAction *connect_action = new QAction(tr("Connect"), this);
  72         disconnect_action = new QAction(tr("Disconnect"), this);
  73         scaling = new QAction(tr("Fit to Screen"), this);
  74         scaling->setCheckable(true);
  75         scaling->setChecked(settings.value("rescale", true).toBool());
  76         show_toolbar = new QAction(tr("Show Toolbar"), this);
  77         show_toolbar->setCheckable(true);
  78         show_toolbar->setChecked(settings.value("show_toolbar", true).toBool());
  79         QAction *pref_action = new QAction(tr("Preferences"), this);
  80         QAction *about_action = new QAction(tr("About"), this);
  81
  82 #ifdef Q_WS_HILDON
  83         menuBar()->addAction(connect_action);
  84         menuBar()->addAction(disconnect_action);
  85         menuBar()->addAction(scaling);
  86         menuBar()->addAction(show_toolbar);
  87         menuBar()->addAction(pref_action);
  88         menuBar()->addAction(about_action);
  89 #else
  90         QMenu* session_menu = menuBar()->addMenu(tr("&Session"));
  91         session_menu->addAction(connect_action);
  92         session_menu->addAction(disconnect_action);
  93         session_menu->addSeparator();
  94         //session_menu->addAction(pref_action);
  95         //session_menu->addSeparator();
  96         session_menu->addAction(tr("&Quit"), this, SLOT(close()));
  97
  98         QMenu* view_menu = menuBar()->addMenu(tr("&View"));
  99         view_menu->addAction(scaling);
 100         view_menu->addAction(show_toolbar);
 101
 102         QMenu* help_menu = menuBar()->addMenu(tr("&Help"));
 103         help_menu->addAction(about_action);
 104 #endif
 105
 106         connect(about_action, SIGNAL(triggered()),
 107                 this, SLOT(about()));
 108         connect(pref_action, SIGNAL(triggered()),
 109                 this, SLOT(showPreferences()));
 110         connect(connect_action, SIGNAL(triggered()),
 111                 this, SLOT(showConnectDialog()));
 112         connect(disconnect_action, SIGNAL(triggered()),
 113                 this, SLOT(disconnectFromHost()));
 114         connect(show_toolbar, SIGNAL(toggled(bool)),
 115                 toolbar, SLOT(setVisible(bool)));
 116         connect(show_toolbar, SIGNAL(toggled(bool)),
 117                 this, SLOT(forceResizeDelayed()));
 118
 119         setCentralWidget(scroll_area);
 120         new FullScreenExitButton(this);
 121
 122         grabZoomKeys(true);
 123         reloadSettings();
 124
 125         //TODO: can i replace this with resizeEvent?
 126         connect(QApplication::desktop(), SIGNAL(resized(int)),
 127                 this, SLOT(forceResize()));
 128
 129         if(url.isNull()) {
 130                 disconnect_action->setEnabled(false);
 131                 toolbar->setEnabled(false);
 132                 showConnectDialog();
 133         } else {
 134                 vnc_view = new VncView(this, url, RemoteView::Quality(quality));
 135                 connect(scaling, SIGNAL(toggled(bool)),
 136                         vnc_view, SLOT(enableScaling(bool)));
 137                 connect(vnc_view, SIGNAL(statusChanged(RemoteView::RemoteStatus)),
 138                         this, SLOT(statusChanged(RemoteView::RemoteStatus)));
 139                 scroll_area->setWidget(vnc_view);
 140                 vnc_view->start();
 141                 vnc_view->enableScaling(scaling->isChecked());
 142         }
 143 }
 144
 145 void MainWindow::grabZoomKeys(bool grab)
 146 {
 147 #ifdef Q_WS_HILDON
 148         unsigned long val = (grab)?1:0;
 149         Atom atom = XInternAtom(QX11Info::display(), "_HILDON_ZOOM_KEY_ATOM", False);
 150         if(!atom) {
 151                 qWarning("Couldn't get zoom key atom");
 152                 return;
 153         }
 154         XChangeProperty(QX11Info::display(), winId(), atom, XA_INTEGER,
 155                 32, PropModeReplace, reinterpret_cast<unsigned char *>(&val), 1);
 156 #endif
 157 }
 158
 159 void MainWindow::closeEvent(QCloseEvent*) {
 160         grabZoomKeys(false);
 161
 162         QSettings settings;
 163         settings.setValue("show_toolbar", show_toolbar->isChecked());
 164         settings.setValue("rescale", scaling->isChecked());
 165         settings.sync();
 166
 167         hide();
 168
 169         disconnectFromHost();
 170 }
 171
 172 void MainWindow::about() {
 173         QMessageBox::about(this, tr("About Presence VNC"),
 174                 tr("<center><h1>Presence VNC 0.5</h1>\
 175 <p>A touchscreen friendly VNC client</p>\
 176 <p><a href=\"https://garage.maemo.org/projects/presencevnc/\">https://garage.maemo.org/projects/presencevnc</a></p></center>\
 177 <small><p>&copy;2010 Christian Pulvermacher &lt;pulvermacher@gmx.de&gt;</p>\
 178 <p>Based on KRDC, &copy; 2007-2008 Urs Wolfer</p>\
 179 <p>and LibVNCServer, &copy; 2001-2003 Johannes E. Schindelin</p>\
 180 <p>This program is free software; License: <a href=\"http://www.gnu.org/licenses/gpl-2.0.html\">GNU GPL 2</a> or later.</p></small>"));
 181 }
 182
 183 void MainWindow::showConnectDialog()
 184 {
 185         ConnectDialog *connect_dialog = new ConnectDialog(this);
 186         connect(connect_dialog, SIGNAL(connectToHost(QString)),
 187                 this, SLOT(connectToHost(QString)));
 188         connect_dialog->exec();
 189 }
 190
 191 void MainWindow::connectToHost(QString url)
 192 {
 193         disconnectFromHost();
 194
 195         vnc_view = new VncView(this, url, RemoteView::Quality(2));
 196
 197         connect(scaling, SIGNAL(toggled(bool)),
 198                 vnc_view, SLOT(enableScaling(bool)));
 199         connect(vnc_view, SIGNAL(statusChanged(RemoteView::RemoteStatus)),
 200                 this, SLOT(statusChanged(RemoteView::RemoteStatus)));
 201         scroll_area->setWidget(vnc_view);
 202         vnc_view->start();
 203         vnc_view->enableScaling(scaling->isChecked());
 204         disconnect_action->setEnabled(true);
 205         toolbar->setEnabled(true);
 206 }
 207
 208 void MainWindow::disconnectFromHost()
 209 {
 210         if(!vnc_view)
 211                 return;
 212
 213         scroll_area->setWidget(0);
 214
 215         vnc_view->disconnect(); //remove all signal-slot connections
 216         delete vnc_view;
 217         vnc_view = 0;
 218         disconnect_action->setEnabled(false);
 219         toolbar->setEnabled(false);
 220 }
 221
 222 void MainWindow::statusChanged(RemoteView::RemoteStatus status)
 223 {
 224         static RemoteView::RemoteStatus old_status = RemoteView::Disconnected;
 225
 226         switch(status) {
 227         case RemoteView::Connecting:
 228 #ifdef Q_WS_HILDON
 229                 setAttribute(Qt::WA_Maemo5ShowProgressIndicator, true);
 230 #endif
 231                 break;
 232         case RemoteView::Connected:
 233 #ifdef Q_WS_HILDON
 234                 setAttribute(Qt::WA_Maemo5ShowProgressIndicator, false);
 235 #endif
 236                 if(!scaling->isChecked()) {
 237                         //ugly hack to force a refresh (forceFullRepaint() doesn't repaint?? -> vnc_view hidden???)
 238                         vnc_view->resize(scroll_area->size());
 239                         vnc_view->enableScaling(false);
 240                 }
 241                 break;
 242         case RemoteView::Disconnecting:
 243                 if(old_status != RemoteView::Disconnected) { //Disconnecting also occurs while connecting, so check last state
 244 #ifdef Q_WS_HILDON
 245                         QMaemo5InformationBox::information(this, tr("Connection lost"));
 246 #endif
 247
 248                         //clean up
 249                         scroll_area->setWidget(0);
 250                         vnc_view = 0;
 251                         disconnect_action->setEnabled(false);
 252                         toolbar->setEnabled(false);
 253
 254                         //exit fullscreen mode
 255                         if(windowState() & Qt::WindowFullScreen)
 256                                 setWindowState(windowState() ^ Qt::WindowFullScreen);
 257                 }
 258                 break;
 259         case RemoteView::Disconnected:
 260 #ifdef Q_WS_HILDON
 261                 setAttribute(Qt::WA_Maemo5ShowProgressIndicator, false);
 262 #endif
 263                 if(old_status == RemoteView::Disconnecting) {
 264                         scroll_area->setWidget(0); //remove widget
 265                 }
 266                 break;
 267         }
 268
 269         old_status = status;
 270 }
 271
 272 //when rescaling is enabled, this resizes the widget to use available screen space
 273 //necessary when rotating, showing fullscreen, etc.
 274 void MainWindow::forceResize()
 275 {
 276         if(vnc_view and scaling->isChecked()) {
 277                 vnc_view->resize(scroll_area->size());
 278         }
 279 }
 280
 281 void MainWindow::forceResizeDelayed()
 282 {
 283         QTimer::singleShot(500, this, SLOT(forceResize()));
 284 }
 285
 286 void MainWindow::toggleFullscreen()
 287 {
 288         toolbar->setVisible(show_toolbar->isChecked() and (windowState() & Qt::WindowFullScreen)); //hide toolbar in fullscreen
 289         setWindowState(windowState() ^ Qt::WindowFullScreen);
 290         forceResizeDelayed();
 291 }
 292
 293 void MainWindow::showKeyMenu()
 294 {
 295         static KeyMenu *key_menu = new KeyMenu(this);
 296         key_menu->exec();
 297
 298         vnc_view->sendKeySequence(key_menu->getKeySequence());
 299 }
 300
 301 void MainWindow::showPreferences()
 302 {
 303         Preferences *p = new Preferences(this);
 304         p->exec();
 305         delete p;
 306
 307         reloadSettings();
 308 }
 309
 310 void MainWindow::reloadSettings()
 311 {
 312         QSettings settings;
 313 #ifdef Q_WS_HILDON
 314         int rotation = settings.value("screen_rotation", 0).toInt();
 315         setAttribute(Qt::WA_Maemo5AutoOrientation, rotation == 0);
 316         setAttribute(Qt::WA_Maemo5LandscapeOrientation, rotation == 1);
 317         setAttribute(Qt::WA_Maemo5PortraitOrientation, rotation == 2);
 318 #endif
 319
 320         if(vnc_view)
 321                 vnc_view->reloadSettings();
 322 }
 323
 324 void MainWindow::resizeEvent(QResizeEvent *event)
 325 {
 326         QMainWindow::resizeEvent(event);
 327
 328         forceResize();
 329 }
 330
 331 void MainWindow::showInputPanel()
 332 {
 333 #ifdef Q_WS_HILDON
 334         vnc_view->setAttribute(Qt::WA_InputMethodEnabled, true);
 335         QEvent event(QEvent::RequestSoftwareInputPanel);
 336         QApplication::sendEvent(vnc_view, &event);
 337 #endif
 338 }