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 "keymenu.h"
  21 #include "mainwindow.h"
  22 #include "preferences.h"
  23 #include "scrollarea.h"
  24 #include "vncview.h"
  25
  26 #ifdef Q_WS_MAEMO_5
  27 #include <QtMaemo5>
  28 #include <QX11Info>
  29 #include <QDBusConnection>
  30
  31 #include <mce/mode-names.h>
  32 #include <mce/dbus-names.h>
  33
  34 #include <X11/Xlib.h>
  35 #include <X11/Xatom.h>
  36 #endif
  37
  38
  39 MainWindow::MainWindow(QString url, int quality, int listen_port, bool view_only):
  40     QMainWindow(0),
  41     vnc_view(0),
  42     scroll_area(new ScrollArea(this)),
  43     input_toolbuttons(new QActionGroup(this)),
  44     key_menu(0)
  45 {
  46     setWindowTitle("Presence VNC");
  47 #ifdef Q_WS_MAEMO_5
  48     setContextMenuPolicy(Qt::NoContextMenu);
  49     setAttribute(Qt::WA_Maemo5StackedWindow);
  50 #endif
  51
  52     migrateConfiguration();
  53
  54     //set up toolbar
  55     toolbar = new QToolBar(0);
  56     key_menu_button = input_toolbuttons->addAction(toolbar->addAction(QChar(0x2026), this, SLOT(showKeyMenu()))); //"..." button
  57     key_menu_button->setCheckable(true); //used to indicate wether a modifier key is still pressed
  58     input_toolbuttons->addAction(toolbar->addAction(tr("Tab"), this, SLOT(sendTab())));
  59     input_toolbuttons->addAction(toolbar->addAction(tr("Esc"), this, SLOT(sendEsc())));
  60     input_toolbuttons->addAction(toolbar->addAction(tr("PgUp"), this, SLOT(sendPgUp())));
  61     input_toolbuttons->addAction(toolbar->addAction(tr("PgDn"), this, SLOT(sendPgDn())));
  62 #ifdef Q_WS_MAEMO_5
  63     input_toolbuttons->addAction(toolbar->addAction(QIcon("/usr/share/icons/hicolor/48x48/hildon/chat_enter.png"), "", this, SLOT(sendReturn())));
  64     input_toolbuttons->addAction(toolbar->addAction(QIcon("/usr/share/icons/hicolor/48x48/hildon/control_keyboard.png"), "", this, SLOT(showInputPanel())));
  65 #endif
  66
  67     QSettings settings;
  68     zoom_slider = new QSlider(Qt::Horizontal, 0);
  69     zoom_slider->setRange(0, 100);
  70     connect(zoom_slider, SIGNAL(valueChanged(int)),
  71             this, SLOT(setZoomLevel(int)));
  72     connect(zoom_slider, SIGNAL(sliderReleased()),
  73             this, SLOT(zoomSliderReleased()));
  74     zoom_slider->setValue(settings.value("zoomlevel", 95).toInt());
  75     toolbar->addWidget(zoom_slider);
  76
  77 #ifdef Q_WS_MAEMO_5
  78     toolbar->addAction(QIcon("/usr/share/icons/hicolor/48x48/hildon/general_fullsize.png"), "", this, SLOT(toggleFullscreen()));
  79 #else
  80     toolbar->addAction(tr("Toggle Fullscreen"), this, SLOT(toggleFullscreen()));
  81 #endif
  82     addToolBar(toolbar);
  83     toolbar->setVisible(settings.value("show_toolbar", true).toBool());
  84     toolbar->setEnabled(false);
  85
  86     //set up menu
  87     QAction *connect_action = new QAction(tr("Connect"), this);
  88     disconnect_action = new QAction(tr("Disconnect"), this);
  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(show_toolbar);
  99     menuBar()->addAction(pref_action);
 100     menuBar()->addAction(about_action);
 101 #else
 102     QMenu* session_menu = menuBar()->addMenu(tr("&Session"));
 103     session_menu->addAction(connect_action);
 104     session_menu->addAction(disconnect_action);
 105     session_menu->addSeparator();
 106     session_menu->addAction(pref_action);
 107     session_menu->addSeparator();
 108     session_menu->addAction(tr("&Quit"), this, SLOT(close()));
 109
 110     QMenu* view_menu = menuBar()->addMenu(tr("&View"));
 111     view_menu->addAction(show_toolbar);
 112
 113     QMenu* help_menu = menuBar()->addMenu(tr("&Help"));
 114     help_menu->addAction(about_action);
 115 #endif
 116
 117     connect(about_action, SIGNAL(triggered()),
 118             this, SLOT(about()));
 119     connect(pref_action, SIGNAL(triggered()),
 120             this, SLOT(showPreferences()));
 121     connect(connect_action, SIGNAL(triggered()),
 122             this, SLOT(showConnectDialog()));
 123     connect(disconnect_action, SIGNAL(triggered()),
 124             this, SLOT(disconnectFromHost()));
 125     connect(show_toolbar, SIGNAL(toggled(bool)),
 126             toolbar, SLOT(setVisible(bool)));
 127     connect(show_toolbar, SIGNAL(toggled(bool)),
 128             this, SLOT(updateScreenSpaceDelayed()));
 129 #ifdef Q_WS_MAEMO_5
 130     QDBusConnection::systemBus().connect("", MCE_SIGNAL_PATH, MCE_SIGNAL_IF, MCE_DISPLAY_SIG,
 131                                          this, SLOT(displayStateChanged(QString)));
 132 #endif
 133
 134     setCentralWidget(scroll_area);
 135
 136     connect(scroll_area, SIGNAL(fullscreenButtonClicked()),
 137             this, SLOT(toggleFullscreen()));
 138
 139     grabZoomKeys(true);
 140     reloadSettings();
 141
 142     if(url.isEmpty() and listen_port == 0) {
 143         disconnect_action->setEnabled(false);
 144         showConnectDialog();
 145     } else {
 146         connectToHost(url, quality, listen_port, view_only);
 147     }
 148 }
 149
 150 void MainWindow::grabZoomKeys(bool grab)
 151 {
 152 #ifdef Q_WS_MAEMO_5
 153     unsigned long val = (grab)?1:0;
 154     Atom atom = XInternAtom(QX11Info::display(), "_HILDON_ZOOM_KEY_ATOM", False);
 155     if(!atom) {
 156         qWarning("Couldn't get zoom key atom");
 157         return;
 158     }
 159     XChangeProperty(QX11Info::display(), winId(), atom, XA_INTEGER,
 160                     32, PropModeReplace, reinterpret_cast<unsigned char *>(&val), 1);
 161 #endif
 162 }
 163
 164 void MainWindow::closeEvent(QCloseEvent*)
 165 {
 166     grabZoomKeys(false);
 167
 168     QSettings settings;
 169     settings.setValue("show_toolbar", show_toolbar->isChecked());
 170     settings.setValue("zoomlevel", zoom_slider->value());
 171     settings.sync();
 172
 173     hide();
 174
 175     disconnectFromHost();
 176 }
 177
 178 void MainWindow::about()
 179 {
 180     QMessageBox::about(this, tr("About Presence VNC"),
 181                        tr("<center><h1>Presence VNC 0.8</h1>\
 182                 <p>A touchscreen friendly VNC client</p>\
 183                 <p><a href=\"http://presencevnc.garage.maemo.org/\">http://presencevnc.garage.maemo.org/</a></p></center>\
 184                 <small><p>&copy;2010-2012 Christian Pulvermacher &lt;pulvermacher@gmx.de&gt;<br />\
 185                 Based on KRDC, &copy; 2007-2008 Urs Wolfer<br />\
 186                 and LibVNCServer, &copy; 2001-2003 Johannes E. Schindelin</p>\
 187                 <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>"));
 188 }
 189
 190 void MainWindow::showConnectDialog()
 191 {
 192     ConnectDialog *connect_dialog = new ConnectDialog(this);
 193     connect(connect_dialog, SIGNAL(connectToHost(QString, int, int, bool)),
 194             this, SLOT(connectToHost(QString, int, int, bool)));
 195     connect_dialog->exec();
 196     //ConnectDialog cleans up after itself
 197 }
 198
 199 void MainWindow::connectToHost(QString url, int quality, int listen_port, bool view_only)
 200 {
 201     disconnectFromHost();
 202
 203     vnc_view = new VncView(this, url, RemoteView::Quality(quality), listen_port);
 204     vnc_view->setViewOnly(view_only);
 205
 206     connect(vnc_view, SIGNAL(statusChanged(RemoteView::RemoteStatus)),
 207             this, SLOT(statusChanged(RemoteView::RemoteStatus)));
 208     connect(vnc_view, SIGNAL(errorMessage(QString, QString)),
 209         scroll_area, SLOT(showMessage(QString, QString)));
 210     scroll_area->setWidget(vnc_view);
 211     vnc_view->start();
 212     setWindowTitle(QString("Presence VNC - %1").arg(vnc_view->host()) + (view_only?tr(" [View Only]"):""));
 213
 214     disconnect_action->setEnabled(true);
 215
 216     //reset key menu
 217     delete key_menu;
 218     key_menu = new KeyMenu(this);
 219 }
 220
 221 void MainWindow::disconnectFromHost()
 222 {
 223     if(!vnc_view)
 224         return;
 225
 226     setWindowTitle("Presence VNC");
 227     disconnect_action->setEnabled(false);
 228     toolbar->setEnabled(false);
 229     scroll_area->setWidget(0);
 230
 231     delete vnc_view;
 232     vnc_view = 0;
 233 }
 234
 235 void MainWindow::statusChanged(RemoteView::RemoteStatus status)
 236 {
 237     static RemoteView::RemoteStatus old_status = RemoteView::Disconnected;
 238
 239     switch(status) {
 240     case RemoteView::Connecting:
 241 #ifdef Q_WS_MAEMO_5
 242         setAttribute(Qt::WA_Maemo5ShowProgressIndicator, true);
 243 #endif
 244         break;
 245     case RemoteView::Connected:
 246 #ifdef Q_WS_MAEMO_5
 247         setAttribute(Qt::WA_Maemo5ShowProgressIndicator, false);
 248 #endif
 249         toolbar->setEnabled(true);
 250
 251         //disable key input buttons in view only mode
 252         input_toolbuttons->setEnabled(!vnc_view->viewOnly());
 253
 254         vnc_view->setZoomLevel(zoom_slider->value());
 255         vnc_view->useFastTransformations(false);
 256         vnc_view->update();
 257         break;
 258     case RemoteView::Disconnecting:
 259         if(old_status == RemoteView::Disconnected) //Disconnecting also occurs while connecting, so check last state
 260             break;
 261
 262         if(disconnect_action->isEnabled()) //don't show when manually disconnecting
 263             scroll_area->showMessage(tr("Connection lost"));
 264
 265         //clean up
 266         scroll_area->setWidget(0);
 267         vnc_view = 0;
 268         setWindowTitle("Presence VNC");
 269         disconnect_action->setEnabled(false);
 270         toolbar->setEnabled(false);
 271
 272         //exit fullscreen mode
 273         if(windowState() & Qt::WindowFullScreen)
 274             setWindowState(windowState() ^ Qt::WindowFullScreen);
 275         break;
 276     case RemoteView::Disconnected:
 277 #ifdef Q_WS_MAEMO_5
 278         setAttribute(Qt::WA_Maemo5ShowProgressIndicator, false);
 279 #endif
 280         if(old_status == RemoteView::Disconnecting) {
 281             scroll_area->setWidget(0); //remove widget
 282         }
 283         break;
 284     default: //avoid compiler warnings
 285         break;
 286     }
 287
 288     old_status = status;
 289 }
 290
 291 //updates available screen space for current zoom level
 292 //necessary when rotating, showing fullscreen, etc.
 293 void MainWindow::updateScreenSpace()
 294 {
 295     if(vnc_view) {
 296         vnc_view->setZoomLevel();
 297     }
 298 }
 299
 300 void MainWindow::updateScreenSpaceDelayed()
 301 {
 302     QTimer::singleShot(500, this, SLOT(updateScreenSpace()));
 303 }
 304
 305 void MainWindow::toggleFullscreen()
 306 {
 307     bool in_fullscreen = windowState() & Qt::WindowFullScreen;
 308
 309     //hide menu/toolbar in fullscreen (new state is !in_fullscreen)
 310     toolbar->setVisible(show_toolbar->isChecked() and in_fullscreen);
 311
 312 #ifndef Q_WS_MAEMO_5
 313     //menu bar is invisible by default on maemo
 314     menuBar()->setVisible(in_fullscreen);
 315 #endif
 316
 317     setWindowState(windowState() ^ Qt::WindowFullScreen);
 318     updateScreenSpaceDelayed();
 319 }
 320
 321 void MainWindow::showKeyMenu()
 322 {
 323     key_menu->exec();
 324     vnc_view->sendKeySequence(key_menu->getKeySequence());
 325     key_menu_button->setChecked(key_menu->isAltChecked() or key_menu->isWinChecked());
 326 }
 327
 328 void MainWindow::showPreferences()
 329 {
 330     Preferences *p = new Preferences(this);
 331     p->exec();
 332     delete p;
 333
 334     reloadSettings();
 335 }
 336
 337 void MainWindow::reloadSettings()
 338 {
 339     QSettings settings;
 340     zoom_to_cursor = settings.value("zoom_to_cursor", true).toBool();
 341
 342 #ifdef Q_WS_MAEMO_5
 343     int rotation = settings.value("screen_rotation", 0).toInt();
 344     setAttribute(Qt::WA_Maemo5AutoOrientation, rotation == 0);
 345     setAttribute(Qt::WA_Maemo5LandscapeOrientation, rotation == 1);
 346     setAttribute(Qt::WA_Maemo5PortraitOrientation, rotation == 2);
 347 #endif
 348
 349     if(vnc_view)
 350         vnc_view->reloadSettings();
 351 }
 352
 353 void MainWindow::resizeEvent(QResizeEvent *event)
 354 {
 355     QMainWindow::resizeEvent(event);
 356
 357     updateScreenSpace();
 358     if(vnc_view)
 359         vnc_view->setZoomLevel(zoom_slider->value());
 360
 361 #ifdef Q_WS_MAEMO_5
 362     //in portrait mode, show only zoom slider and fullscreen button
 363     //(opening HW keyboard or OSK will return to landscape)
 364     const bool portrait = height() > width();
 365     for(int i = 0; i < 7; i++)
 366         toolbar->actions()[i]->setVisible(!portrait);
 367 #endif
 368 }
 369
 370 void MainWindow::showInputPanel()
 371 {
 372 #ifdef Q_WS_MAEMO_5
 373     //TODO: when hardware keyboard is open, this will only cause the IM to mess up 'real' key events
 374     vnc_view->setAttribute(Qt::WA_InputMethodEnabled, true);
 375     vnc_view->setInputMethodHints(Qt::ImhNoAutoUppercase); //without this, IM starts with caps lock
 376
 377     QEvent event(QEvent::RequestSoftwareInputPanel);
 378     QApplication::sendEvent(vnc_view, &event);
 379 #endif
 380 }
 381
 382 void MainWindow::setZoomLevel(int level)
 383 {
 384     if(!vnc_view)
 385         return;
 386
 387     const qreal old_factor = vnc_view->zoomFactor();
 388     QPoint center = vnc_view->visibleRegion().boundingRect().center();
 389
 390     vnc_view->setZoomLevel(level);
 391
 392     const qreal new_factor = vnc_view->zoomFactor();
 393
 394     //scroll to center, if zoom level actually changed
 395     if(old_factor != new_factor) {
 396         if(zoom_to_cursor)
 397             center = new_factor * vnc_view->cursorPosition();
 398         else //zoom to center of visible region
 399             center = center * (double(new_factor)/old_factor);
 400
 401         scroll_area->ensureVisible(center.x(), center.y(),
 402                                    vnc_view->visibleRegion().boundingRect().width()/2,
 403                                    vnc_view->visibleRegion().boundingRect().height()/2);
 404
 405         vnc_view->useFastTransformations(zoom_slider->isSliderDown());
 406         vnc_view->update();
 407
 408         scroll_area->showMessage(tr("Zoom: %1\%").arg(qRound(100*new_factor)));
 409     }
 410 }
 411
 412 void MainWindow::zoomSliderReleased()
 413 {
 414     static QTime time;
 415     if(!time.isNull() and time.elapsed() < 500) //double clicked
 416         zoom_slider->setValue(95); //100%
 417
 418     time.restart();
 419
 420     //stopped zooming, reenable high quality
 421     vnc_view->useFastTransformations(false);
 422 }
 423
 424 void MainWindow::displayStateChanged(QString state)
 425 {
 426     const bool display_on = (state != "off");
 427     if(vnc_view)
 428         vnc_view->setDisplayOff(!display_on);
 429 }
 430
 431 void MainWindow::sendTab() { vnc_view->sendKey(Qt::Key_Tab); }
 432 void MainWindow::sendEsc() { vnc_view->sendKey(Qt::Key_Escape); }
 433 void MainWindow::sendPgUp() { vnc_view->sendKey(Qt::Key_PageUp); }
 434 void MainWindow::sendPgDn() { vnc_view->sendKey(Qt::Key_PageDown); }
 435 void MainWindow::sendReturn() { vnc_view->sendKey(Qt::Key_Return); }