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