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     toolbar->addAction(QIcon("/usr/share/icons/hicolor/48x48/hildon/general_fullsize.png"), "", this, SLOT(toggleFullscreen()));
  78     addToolBar(toolbar);
  79     toolbar->setVisible(settings.value("show_toolbar", true).toBool());
  80     toolbar->setEnabled(false);
  81
  82     //set up menu
  83     QAction *connect_action = new QAction(tr("Connect"), this);
  84     disconnect_action = new QAction(tr("Disconnect"), this);
  85     show_toolbar = new QAction(tr("Show toolbar"), this);
  86     show_toolbar->setCheckable(true);
  87     show_toolbar->setChecked(settings.value("show_toolbar", true).toBool());
  88     QAction *pref_action = new QAction(tr("Preferences"), this);
  89     QAction *about_action = new QAction(tr("About"), this);
  90
  91 #ifdef Q_WS_MAEMO_5
  92     menuBar()->addAction(connect_action);
  93     menuBar()->addAction(disconnect_action);
  94     menuBar()->addAction(show_toolbar);
  95     menuBar()->addAction(pref_action);
  96     menuBar()->addAction(about_action);
  97 #else
  98     QMenu* session_menu = menuBar()->addMenu(tr("&Session"));
  99     session_menu->addAction(connect_action);
 100     session_menu->addAction(disconnect_action);
 101     session_menu->addSeparator();
 102     session_menu->addAction(pref_action);
 103     session_menu->addSeparator();
 104     session_menu->addAction(tr("&Quit"), this, SLOT(close()));
 105
 106     QMenu* view_menu = menuBar()->addMenu(tr("&View"));
 107     view_menu->addAction(show_toolbar);
 108
 109     QMenu* help_menu = menuBar()->addMenu(tr("&Help"));
 110     help_menu->addAction(about_action);
 111 #endif
 112
 113     connect(about_action, SIGNAL(triggered()),
 114             this, SLOT(about()));
 115     connect(pref_action, SIGNAL(triggered()),
 116             this, SLOT(showPreferences()));
 117     connect(connect_action, SIGNAL(triggered()),
 118             this, SLOT(showConnectDialog()));
 119     connect(disconnect_action, SIGNAL(triggered()),
 120             this, SLOT(disconnectFromHost()));
 121     connect(show_toolbar, SIGNAL(toggled(bool)),
 122             toolbar, SLOT(setVisible(bool)));
 123     connect(show_toolbar, SIGNAL(toggled(bool)),
 124             this, SLOT(updateScreenSpaceDelayed()));
 125 #ifdef Q_WS_MAEMO_5
 126     QDBusConnection::systemBus().connect("", MCE_SIGNAL_PATH, MCE_SIGNAL_IF, MCE_DISPLAY_SIG,
 127                                          this, SLOT(displayStateChanged(QString)));
 128 #endif
 129
 130     setCentralWidget(scroll_area);
 131
 132     FullScreenExitButton* fullscreen_exit_button = new FullScreenExitButton(this);
 133     connect(fullscreen_exit_button, SIGNAL(clicked()),
 134             this, SLOT(toggleFullscreen()));
 135
 136     grabZoomKeys(true);
 137     reloadSettings();
 138
 139     if(url.isEmpty() and listen_port == 0) {
 140         disconnect_action->setEnabled(false);
 141         showConnectDialog();
 142     } else {
 143         connectToHost(url, quality, listen_port, view_only);
 144     }
 145 }
 146
 147 void MainWindow::grabZoomKeys(bool grab)
 148 {
 149 #ifdef Q_WS_MAEMO_5
 150     unsigned long val = (grab)?1:0;
 151     Atom atom = XInternAtom(QX11Info::display(), "_HILDON_ZOOM_KEY_ATOM", False);
 152     if(!atom) {
 153         qWarning("Couldn't get zoom key atom");
 154         return;
 155     }
 156     XChangeProperty(QX11Info::display(), winId(), atom, XA_INTEGER,
 157                     32, PropModeReplace, reinterpret_cast<unsigned char *>(&val), 1);
 158 #endif
 159 }
 160
 161 void MainWindow::closeEvent(QCloseEvent*)
 162 {
 163     grabZoomKeys(false);
 164
 165     QSettings settings;
 166     settings.setValue("show_toolbar", show_toolbar->isChecked());
 167     settings.setValue("zoomlevel", zoom_slider->value());
 168     settings.sync();
 169
 170     hide();
 171
 172     disconnectFromHost();
 173 }
 174
 175 void MainWindow::about()
 176 {
 177     QMessageBox::about(this, tr("About Presence VNC"),
 178                        tr("<center><h1>Presence VNC 0.8</h1>\
 179                 <p>A touchscreen friendly VNC client</p>\
 180                 <p><a href=\"http://presencevnc.garage.maemo.org/\">http://presencevnc.garage.maemo.org/</a></p></center>\
 181                 <small><p>&copy;2010 Christian Pulvermacher &lt;pulvermacher@gmx.de&gt;<br />\
 182                 Based on KRDC, &copy; 2007-2008 Urs Wolfer<br />\
 183                 and LibVNCServer, &copy; 2001-2003 Johannes E. Schindelin</p>\
 184                 <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>"));
 185 }
 186
 187 void MainWindow::showConnectDialog()
 188 {
 189     ConnectDialog *connect_dialog = new ConnectDialog(this);
 190     connect(connect_dialog, SIGNAL(connectToHost(QString, int, int, bool)),
 191             this, SLOT(connectToHost(QString, int, int, bool)));
 192     connect_dialog->exec();
 193     //ConnectDialog cleans up after itself
 194 }
 195
 196 void MainWindow::connectToHost(QString url, int quality, int listen_port, bool view_only)
 197 {
 198     disconnectFromHost();
 199
 200     vnc_view = new VncView(this, url, RemoteView::Quality(quality), listen_port);
 201     vnc_view->setViewOnly(view_only);
 202
 203     connect(vnc_view, SIGNAL(statusChanged(RemoteView::RemoteStatus)),
 204             this, SLOT(statusChanged(RemoteView::RemoteStatus)));
 205     scroll_area->setWidget(vnc_view);
 206     vnc_view->start();
 207     setWindowTitle(QString("Presence VNC - %1").arg(vnc_view->host()));
 208
 209     disconnect_action->setEnabled(true);
 210
 211     //reset key menu
 212     delete key_menu;
 213     key_menu = new KeyMenu(this);
 214 }
 215
 216 void MainWindow::disconnectFromHost()
 217 {
 218     if(!vnc_view)
 219         return;
 220
 221     setWindowTitle("Presence VNC");
 222     disconnect_action->setEnabled(false);
 223     toolbar->setEnabled(false);
 224     scroll_area->setWidget(0);
 225
 226     delete vnc_view;
 227     vnc_view = 0;
 228 }
 229
 230 void MainWindow::statusChanged(RemoteView::RemoteStatus status)
 231 {
 232     static RemoteView::RemoteStatus old_status = RemoteView::Disconnected;
 233
 234     switch(status) {
 235     case RemoteView::Connecting:
 236 #ifdef Q_WS_MAEMO_5
 237         setAttribute(Qt::WA_Maemo5ShowProgressIndicator, true);
 238 #endif
 239         break;
 240     case RemoteView::Connected:
 241 #ifdef Q_WS_MAEMO_5
 242         setAttribute(Qt::WA_Maemo5ShowProgressIndicator, false);
 243 #endif
 244         toolbar->setEnabled(true);
 245
 246         //disable key input buttons in view only mode
 247         input_toolbuttons->setEnabled(!vnc_view->viewOnly());
 248
 249         vnc_view->setZoomLevel(zoom_slider->value());
 250         vnc_view->useFastTransformations(false);
 251         vnc_view->repaint();
 252         break;
 253     case RemoteView::Disconnecting:
 254         if(old_status == RemoteView::Disconnected) //Disconnecting also occurs while connecting, so check last state
 255             break;
 256
 257         if(disconnect_action->isEnabled()) //don't show when manually disconnecting
 258             scroll_area->showMessage(tr("Connection lost"));
 259
 260         //clean up
 261         scroll_area->setWidget(0);
 262         vnc_view = 0;
 263         setWindowTitle("Presence VNC");
 264         disconnect_action->setEnabled(false);
 265         toolbar->setEnabled(false);
 266
 267         //exit fullscreen mode
 268         if(windowState() & Qt::WindowFullScreen)
 269             setWindowState(windowState() ^ Qt::WindowFullScreen);
 270         break;
 271     case RemoteView::Disconnected:
 272 #ifdef Q_WS_MAEMO_5
 273         setAttribute(Qt::WA_Maemo5ShowProgressIndicator, false);
 274 #endif
 275         if(old_status == RemoteView::Disconnecting) {
 276             scroll_area->setWidget(0); //remove widget
 277         }
 278         break;
 279     default: //avoid compiler warnings
 280         break;
 281     }
 282
 283     old_status = status;
 284 }
 285
 286 //updates available screen space for current zoom level
 287 //necessary when rotating, showing fullscreen, etc.
 288 void MainWindow::updateScreenSpace()
 289 {
 290     if(vnc_view) {
 291         vnc_view->setZoomLevel();
 292     }
 293 }
 294
 295 void MainWindow::updateScreenSpaceDelayed()
 296 {
 297     QTimer::singleShot(500, this, SLOT(updateScreenSpace()));
 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     updateScreenSpaceDelayed();
 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     zoom_to_cursor = settings.value("zoom_to_cursor", true).toBool();
 335
 336 #ifdef Q_WS_MAEMO_5
 337     int rotation = settings.value("screen_rotation", 0).toInt();
 338     setAttribute(Qt::WA_Maemo5AutoOrientation, rotation == 0);
 339     setAttribute(Qt::WA_Maemo5LandscapeOrientation, rotation == 1);
 340     setAttribute(Qt::WA_Maemo5PortraitOrientation, rotation == 2);
 341 #endif
 342
 343     if(vnc_view)
 344         vnc_view->reloadSettings();
 345 }
 346
 347 void MainWindow::resizeEvent(QResizeEvent *event)
 348 {
 349     QMainWindow::resizeEvent(event);
 350
 351     updateScreenSpace();
 352     if(vnc_view)
 353         vnc_view->setZoomLevel(zoom_slider->value());
 354
 355 #ifdef Q_WS_MAEMO_5
 356     //hide zoom slider in portrait mode
 357     zoom_slider->setVisible(height() < width());
 358 #endif
 359 }
 360
 361 void MainWindow::showInputPanel()
 362 {
 363 #ifdef Q_WS_MAEMO_5
 364     //TODO: when hardware keyboard is open, this will only cause the IM to mess up 'real' key events
 365     vnc_view->setAttribute(Qt::WA_InputMethodEnabled, true);
 366     vnc_view->setInputMethodHints(Qt::ImhNoAutoUppercase); //without this, IM starts with caps lock
 367
 368     QEvent event(QEvent::RequestSoftwareInputPanel);
 369     QApplication::sendEvent(vnc_view, &event);
 370 #endif
 371 }
 372
 373 void MainWindow::setZoomLevel(int level)
 374 {
 375     if(!vnc_view)
 376         return;
 377
 378     const qreal old_factor = vnc_view->zoomFactor();
 379     QPoint center = vnc_view->visibleRegion().boundingRect().center();
 380
 381     vnc_view->setZoomLevel(level);
 382
 383     const qreal new_factor = vnc_view->zoomFactor();
 384
 385     //scroll to center, if zoom level actually changed
 386     if(old_factor != new_factor) {
 387         if(zoom_to_cursor)
 388             center = new_factor * vnc_view->cursorPosition();
 389         else //zoom to center of visible region
 390             center = center * (double(new_factor)/old_factor);
 391
 392         scroll_area->ensureVisible(center.x(), center.y(),
 393                                    vnc_view->visibleRegion().boundingRect().width()/2,
 394                                    vnc_view->visibleRegion().boundingRect().height()/2);
 395
 396         vnc_view->useFastTransformations(zoom_slider->isSliderDown());
 397         vnc_view->update();
 398
 399         scroll_area->showMessage(tr("Zoom: %1\%").arg(qRound(100*new_factor)));
 400     }
 401 }
 402
 403 void MainWindow::zoomSliderReleased()
 404 {
 405     static QTime time;
 406     if(!time.isNull() and time.elapsed() < 500) //double clicked
 407         zoom_slider->setValue(95); //100%
 408
 409     time.restart();
 410
 411     //stopped zooming, reenable high quality
 412     vnc_view->useFastTransformations(false);
 413 }
 414
 415 void MainWindow::displayStateChanged(QString state)
 416 {
 417     const bool display_on = (state != "off");
 418     if(vnc_view)
 419         vnc_view->setDisplayOff(!display_on);
 420 }
 421
 422 void MainWindow::sendTab() { vnc_view->sendKey(Qt::Key_Tab); }
 423 void MainWindow::sendEsc() { vnc_view->sendKey(Qt::Key_Escape); }
 424 void MainWindow::sendPgUp() { vnc_view->sendKey(Qt::Key_PageUp); }
 425 void MainWindow::sendPgDn() { vnc_view->sendKey(Qt::Key_PageDown); }
 426 void MainWindow::sendReturn() { vnc_view->sendKey(Qt::Key_Return); }