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