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 #include <QSlider>
  27
  28 #ifdef Q_WS_MAEMO_5
  29 #include <QtMaemo5>
  30 #include <QX11Info>
  31
  32 #include <X11/Xlib.h>
  33 #include <X11/Xatom.h>
  34 #endif
  35
  36
  37
  38 MainWindow::MainWindow(QString url, int quality):
  39         QMainWindow(0),
  40         vnc_view(0),
  41         scroll_area(new ScrollArea(0)),
  42         key_menu(0)
  43 {
  44         setWindowTitle("Presence VNC");
  45
  46         migrateConfiguration();
  47         QSettings settings;
  48
  49 #ifdef Q_WS_MAEMO_5
  50         setAttribute(Qt::WA_Maemo5StackedWindow);
  51 #endif
  52
  53         //set up toolbar
  54         toolbar = new QToolBar(0);
  55         toolbar->addAction(QChar(0x2026), this, SLOT(showKeyMenu())); //"..." button
  56         toolbar->addAction(tr("Tab"), this, SLOT(sendTab()));
  57         toolbar->addAction(tr("Esc"), this, SLOT(sendEsc()));
  58         toolbar->addAction(tr("PgUp"), this, SLOT(sendPgUp()));
  59         toolbar->addAction(tr("PgDn"), this, SLOT(sendPgDn()));
  60 #ifdef Q_WS_MAEMO_5
  61         toolbar->addAction(QIcon("/usr/share/icons/hicolor/48x48/hildon/chat_enter.png"), "", this, SLOT(sendReturn()));
  62         toolbar->addAction(QIcon("/usr/share/icons/hicolor/48x48/hildon/control_keyboard.png"), "", this, SLOT(showInputPanel()));
  63 #endif
  64
  65         //move fullscreen button to the right
  66         QWidget *spacer = new QWidget();
  67         spacer->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
  68         toolbar->addWidget(spacer);
  69
  70         toolbar->addAction(QIcon("/usr/share/icons/hicolor/48x48/hildon/general_fullsize.png"), "", this, SLOT(toggleFullscreen()));
  71         addToolBar(toolbar);
  72         toolbar->setVisible(settings.value("show_toolbar", true).toBool());
  73
  74         //set up zoombar
  75         zoombar = new QToolBar(0);
  76         QSlider *zoom_slider = new QSlider(Qt::Horizontal, 0);
  77         zoom_slider->setRange(0, 100);
  78         connect(zoom_slider, SIGNAL(valueChanged(int)),
  79                 this, SLOT(setZoomLevel(int)));
  80         zoombar->addWidget(zoom_slider);
  81         addToolBar(zoombar);
  82
  83         //set up menu
  84         QAction *connect_action = new QAction(tr("Connect"), this);
  85         disconnect_action = new QAction(tr("Disconnect"), this);
  86         scaling = new QAction(tr("Fit to Screen"), this);
  87         scaling->setCheckable(true);
  88         scaling->setChecked(settings.value("rescale", true).toBool());
  89         show_toolbar = new QAction(tr("Show Toolbar"), this);
  90         show_toolbar->setCheckable(true);
  91         show_toolbar->setChecked(settings.value("show_toolbar", true).toBool());
  92         QAction *pref_action = new QAction(tr("Preferences"), this);
  93         QAction *about_action = new QAction(tr("About"), this);
  94
  95 #ifdef Q_WS_MAEMO_5
  96         menuBar()->addAction(connect_action);
  97         menuBar()->addAction(disconnect_action);
  98         menuBar()->addAction(scaling);
  99         menuBar()->addAction(show_toolbar);
 100         menuBar()->addAction(pref_action);
 101         menuBar()->addAction(about_action);
 102 #else
 103         QMenu* session_menu = menuBar()->addMenu(tr("&Session"));
 104         session_menu->addAction(connect_action);
 105         session_menu->addAction(disconnect_action);
 106         session_menu->addSeparator();
 107         session_menu->addAction(pref_action);
 108         session_menu->addSeparator();
 109         session_menu->addAction(tr("&Quit"), this, SLOT(close()));
 110
 111         QMenu* view_menu = menuBar()->addMenu(tr("&View"));
 112         view_menu->addAction(scaling);
 113         view_menu->addAction(show_toolbar);
 114
 115         QMenu* help_menu = menuBar()->addMenu(tr("&Help"));
 116         help_menu->addAction(about_action);
 117 #endif
 118
 119         connect(about_action, SIGNAL(triggered()),
 120                 this, SLOT(about()));
 121         connect(pref_action, SIGNAL(triggered()),
 122                 this, SLOT(showPreferences()));
 123         connect(connect_action, SIGNAL(triggered()),
 124                 this, SLOT(showConnectDialog()));
 125         connect(disconnect_action, SIGNAL(triggered()),
 126                 this, SLOT(disconnectFromHost()));
 127         connect(show_toolbar, SIGNAL(toggled(bool)),
 128                 toolbar, SLOT(setVisible(bool)));
 129         connect(show_toolbar, SIGNAL(toggled(bool)),
 130                 this, SLOT(forceResizeDelayed()));
 131
 132         setCentralWidget(scroll_area);
 133         new FullScreenExitButton(this);
 134
 135         grabZoomKeys(true);
 136         reloadSettings();
 137
 138         if(url.isNull()) {
 139                 disconnect_action->setEnabled(false);
 140                 toolbar->setEnabled(false);
 141                 showConnectDialog();
 142         } else {
 143                 vnc_view = new VncView(this, url, RemoteView::Quality(quality));
 144                 connect(scaling, SIGNAL(toggled(bool)),
 145                         vnc_view, SLOT(enableScaling(bool)));
 146                 connect(vnc_view, SIGNAL(statusChanged(RemoteView::RemoteStatus)),
 147                         this, SLOT(statusChanged(RemoteView::RemoteStatus)));
 148                 scroll_area->setWidget(vnc_view);
 149                 vnc_view->start();
 150                 vnc_view->enableScaling(scaling->isChecked());
 151                 key_menu = new KeyMenu(this);
 152         }
 153 }
 154
 155 void MainWindow::grabZoomKeys(bool grab)
 156 {
 157 #ifdef Q_WS_MAEMO_5
 158         unsigned long val = (grab)?1:0;
 159         Atom atom = XInternAtom(QX11Info::display(), "_HILDON_ZOOM_KEY_ATOM", False);
 160         if(!atom) {
 161                 qWarning("Couldn't get zoom key atom");
 162                 return;
 163         }
 164         XChangeProperty(QX11Info::display(), winId(), atom, XA_INTEGER,
 165                 32, PropModeReplace, reinterpret_cast<unsigned char *>(&val), 1);
 166 #endif
 167 }
 168
 169 void MainWindow::closeEvent(QCloseEvent*) {
 170         grabZoomKeys(false);
 171
 172         QSettings settings;
 173         settings.setValue("show_toolbar", show_toolbar->isChecked());
 174         settings.setValue("rescale", scaling->isChecked());
 175         settings.sync();
 176
 177         hide();
 178
 179         disconnectFromHost();
 180 }
 181
 182 void MainWindow::about() {
 183         QMessageBox::about(this, tr("About Presence VNC"),
 184                 tr("<center><h1>Presence VNC 0.6</h1>\
 185 <p>A touchscreen friendly VNC client</p>\
 186 <p><a href=\"https://garage.maemo.org/projects/presencevnc/\">https://garage.maemo.org/projects/presencevnc</a></p></center>\
 187 <small><p>&copy;2010 Christian Pulvermacher &lt;pulvermacher@gmx.de&gt;<br />\
 188 Based on KRDC, &copy; 2007-2008 Urs Wolfer<br />\
 189 and LibVNCServer, &copy; 2001-2003 Johannes E. Schindelin</p>\
 190 <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>"));
 191 }
 192
 193 void MainWindow::showConnectDialog()
 194 {
 195         ConnectDialog *connect_dialog = new ConnectDialog(this);
 196         connect(connect_dialog, SIGNAL(connectToHost(QString, int)),
 197                 this, SLOT(connectToHost(QString, int)));
 198         connect_dialog->exec();
 199 }
 200
 201 void MainWindow::connectToHost(QString url, int quality)
 202 {
 203         disconnectFromHost();
 204
 205         vnc_view = new VncView(this, url, RemoteView::Quality(quality));
 206
 207         connect(scaling, SIGNAL(toggled(bool)),
 208                 vnc_view, SLOT(enableScaling(bool)));
 209         connect(vnc_view, SIGNAL(statusChanged(RemoteView::RemoteStatus)),
 210                 this, SLOT(statusChanged(RemoteView::RemoteStatus)));
 211         scroll_area->setWidget(vnc_view);
 212         vnc_view->start();
 213         vnc_view->enableScaling(scaling->isChecked());
 214         disconnect_action->setEnabled(true);
 215         toolbar->setEnabled(true);
 216
 217         if(key_menu) //reset
 218                 delete key_menu;
 219         key_menu = new KeyMenu(this);
 220 }
 221
 222 void MainWindow::disconnectFromHost()
 223 {
 224         if(!vnc_view)
 225                 return;
 226
 227         scroll_area->setWidget(0);
 228
 229         vnc_view->disconnect(); //remove all signal-slot connections
 230         delete vnc_view;
 231         vnc_view = 0;
 232         disconnect_action->setEnabled(false);
 233         toolbar->setEnabled(false);
 234 }
 235
 236 void MainWindow::statusChanged(RemoteView::RemoteStatus status)
 237 {
 238         static RemoteView::RemoteStatus old_status = RemoteView::Disconnected;
 239
 240         switch(status) {
 241         case RemoteView::Connecting:
 242 #ifdef Q_WS_MAEMO_5
 243                 setAttribute(Qt::WA_Maemo5ShowProgressIndicator, true);
 244 #endif
 245                 break;
 246         case RemoteView::Connected:
 247 #ifdef Q_WS_MAEMO_5
 248                 setAttribute(Qt::WA_Maemo5ShowProgressIndicator, false);
 249 #endif
 250                 if(!scaling->isChecked()) {
 251                         //ugly hack to force a refresh (forceFullRepaint() doesn't repaint?? -> vnc_view hidden???)
 252                         vnc_view->resize(scroll_area->size());
 253                         vnc_view->enableScaling(false);
 254                 }
 255                 break;
 256         case RemoteView::Disconnecting:
 257                 if(old_status != RemoteView::Disconnected) { //Disconnecting also occurs while connecting, so check last state
 258 #ifdef Q_WS_MAEMO_5
 259                         QMaemo5InformationBox::information(this, tr("Connection lost"));
 260 #endif
 261
 262                         //clean up
 263                         scroll_area->setWidget(0);
 264                         vnc_view = 0;
 265                         disconnect_action->setEnabled(false);
 266                         toolbar->setEnabled(false);
 267
 268                         //exit fullscreen mode
 269                         if(windowState() & Qt::WindowFullScreen)
 270                                 setWindowState(windowState() ^ Qt::WindowFullScreen);
 271                 }
 272                 break;
 273         case RemoteView::Disconnected:
 274 #ifdef Q_WS_MAEMO_5
 275                 setAttribute(Qt::WA_Maemo5ShowProgressIndicator, false);
 276 #endif
 277                 if(old_status == RemoteView::Disconnecting) {
 278                         scroll_area->setWidget(0); //remove widget
 279                 }
 280                 break;
 281         }
 282
 283         old_status = status;
 284 }
 285
 286 //when rescaling is enabled, this resizes the widget to use available screen space
 287 //necessary when rotating, showing fullscreen, etc.
 288 void MainWindow::forceResize()
 289 {
 290         if(vnc_view and scaling->isChecked()) {
 291                 vnc_view->resize(scroll_area->size());
 292         }
 293 }
 294
 295 void MainWindow::forceResizeDelayed()
 296 {
 297         QTimer::singleShot(500, this, SLOT(forceResize()));
 298 }
 299
 300 void MainWindow::toggleFullscreen()
 301 {
 302         bool in_fullscreen = windowState() & Qt::WindowFullScreen;
 303
 304         //hide menu/toolbar in fullscreen (new state is !in_fullscreen)
 305         toolbar->setVisible(show_toolbar->isChecked() and in_fullscreen);
 306
 307 #ifndef Q_WS_MAEMO_5
 308         //menu bar is invisible by default on maemo
 309         menuBar()->setVisible(in_fullscreen);
 310 #endif
 311
 312         setWindowState(windowState() ^ Qt::WindowFullScreen);
 313         forceResizeDelayed();
 314 }
 315
 316 void MainWindow::showKeyMenu()
 317 {
 318         key_menu->exec();
 319         vnc_view->sendKeySequence(key_menu->getKeySequence());
 320 }
 321
 322 void MainWindow::showPreferences()
 323 {
 324         Preferences *p = new Preferences(this);
 325         p->exec();
 326         delete p;
 327
 328         reloadSettings();
 329 }
 330
 331 void MainWindow::reloadSettings()
 332 {
 333         QSettings settings;
 334 #ifdef Q_WS_MAEMO_5
 335         int rotation = settings.value("screen_rotation", 0).toInt();
 336         setAttribute(Qt::WA_Maemo5AutoOrientation, rotation == 0);
 337         setAttribute(Qt::WA_Maemo5LandscapeOrientation, rotation == 1);
 338         setAttribute(Qt::WA_Maemo5PortraitOrientation, rotation == 2);
 339 #endif
 340
 341         if(vnc_view)
 342                 vnc_view->reloadSettings();
 343 }
 344
 345 void MainWindow::resizeEvent(QResizeEvent *event)
 346 {
 347         QMainWindow::resizeEvent(event);
 348
 349         forceResize();
 350 }
 351
 352 void MainWindow::showInputPanel()
 353 {
 354 #ifdef Q_WS_MAEMO_5
 355         //TODO: when hardware keyboard is open, this will only cause the IM to mess up 'real' key events
 356         vnc_view->setAttribute(Qt::WA_InputMethodEnabled, true);
 357         vnc_view->setInputMethodHints(Qt::ImhNoAutoUppercase); //without this, IM starts with caps lock
 358
 359         QEvent event(QEvent::RequestSoftwareInputPanel);
 360         QApplication::sendEvent(vnc_view, &event);
 361 #endif
 362 }
 363
 364 void MainWindow::setZoomLevel(int level)
 365 {
 366         if(vnc_view)
 367                 vnc_view->setZoomLevel(level);
 368 }