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
  31 #include <X11/Xlib.h>
  32 #include <X11/Xatom.h>
  33 #endif
  34
  35
  36 MainWindow::MainWindow(QString url, int quality):
  37         QMainWindow(0),
  38         vnc_view(0),
  39         scroll_area(new ScrollArea(0)),
  40         key_menu(new KeyMenu(this))
  41 {
  42         setWindowTitle("Presence VNC");
  43         setContextMenuPolicy(Qt::NoContextMenu);
  44 #ifdef Q_WS_MAEMO_5
  45         setAttribute(Qt::WA_Maemo5StackedWindow);
  46 #endif
  47
  48         migrateConfiguration();
  49
  50         //set up toolbar
  51         toolbar = new QToolBar(0);
  52         toolbar->addAction(QChar(0x2026), this, SLOT(showKeyMenu())); //"..." button
  53         toolbar->addAction(tr("Tab"), this, SLOT(sendTab()));
  54         toolbar->addAction(tr("Esc"), this, SLOT(sendEsc()));
  55         toolbar->addAction(tr("PgUp"), this, SLOT(sendPgUp()));
  56         toolbar->addAction(tr("PgDn"), this, SLOT(sendPgDn()));
  57 #ifdef Q_WS_MAEMO_5
  58         toolbar->addAction(QIcon("/usr/share/icons/hicolor/48x48/hildon/chat_enter.png"), "", this, SLOT(sendReturn()));
  59         toolbar->addAction(QIcon("/usr/share/icons/hicolor/48x48/hildon/control_keyboard.png"), "", this, SLOT(showInputPanel()));
  60 #endif
  61
  62         QSettings settings;
  63         zoom_slider = new QSlider(Qt::Horizontal, 0);
  64         zoom_slider->setRange(0, 100);
  65         connect(zoom_slider, SIGNAL(valueChanged(int)),
  66                 this, SLOT(setZoomLevel(int)));
  67         connect(zoom_slider, SIGNAL(sliderReleased()),
  68                 this, SLOT(zoomSliderReleased()));
  69         zoom_slider->setValue(settings.value("zoomlevel", 95).toInt());
  70         toolbar->addWidget(zoom_slider);
  71
  72         toolbar->addAction(QIcon("/usr/share/icons/hicolor/48x48/hildon/general_fullsize.png"), "", this, SLOT(toggleFullscreen()));
  73         addToolBar(toolbar);
  74         toolbar->setVisible(settings.value("show_toolbar", true).toBool());
  75         toolbar->setEnabled(false);
  76
  77         //set up menu
  78         QAction *connect_action = new QAction(tr("Connect"), this);
  79         disconnect_action = new QAction(tr("Disconnect"), this);
  80         show_toolbar = new QAction(tr("Show Toolbar"), this);
  81         show_toolbar->setCheckable(true);
  82         show_toolbar->setChecked(settings.value("show_toolbar", true).toBool());
  83         QAction *pref_action = new QAction(tr("Preferences"), this);
  84         QAction *about_action = new QAction(tr("About"), this);
  85
  86 #ifdef Q_WS_MAEMO_5
  87         menuBar()->addAction(connect_action);
  88         menuBar()->addAction(disconnect_action);
  89         menuBar()->addAction(show_toolbar);
  90         menuBar()->addAction(pref_action);
  91         menuBar()->addAction(about_action);
  92 #else
  93         QMenu* session_menu = menuBar()->addMenu(tr("&Session"));
  94         session_menu->addAction(connect_action);
  95         session_menu->addAction(disconnect_action);
  96         session_menu->addSeparator();
  97         session_menu->addAction(pref_action);
  98         session_menu->addSeparator();
  99         session_menu->addAction(tr("&Quit"), this, SLOT(close()));
 100
 101         QMenu* view_menu = menuBar()->addMenu(tr("&View"));
 102         view_menu->addAction(show_toolbar);
 103
 104         QMenu* help_menu = menuBar()->addMenu(tr("&Help"));
 105         help_menu->addAction(about_action);
 106 #endif
 107
 108         connect(about_action, SIGNAL(triggered()),
 109                 this, SLOT(about()));
 110         connect(pref_action, SIGNAL(triggered()),
 111                 this, SLOT(showPreferences()));
 112         connect(connect_action, SIGNAL(triggered()),
 113                 this, SLOT(showConnectDialog()));
 114         connect(disconnect_action, SIGNAL(triggered()),
 115                 this, SLOT(disconnectFromHost()));
 116         connect(show_toolbar, SIGNAL(toggled(bool)),
 117                 toolbar, SLOT(setVisible(bool)));
 118         connect(show_toolbar, SIGNAL(toggled(bool)),
 119                 this, SLOT(updateScreenSpaceDelayed()));
 120
 121         setCentralWidget(scroll_area);
 122         new FullScreenExitButton(this);
 123
 124         grabZoomKeys(true);
 125         reloadSettings();
 126
 127         if(url.isNull()) {
 128                 disconnect_action->setEnabled(false);
 129                 showConnectDialog();
 130         } else {
 131                 vnc_view = new VncView(this, url, RemoteView::Quality(quality));
 132                 connect(vnc_view, SIGNAL(statusChanged(RemoteView::RemoteStatus)),
 133                         this, SLOT(statusChanged(RemoteView::RemoteStatus)));
 134                 scroll_area->setWidget(vnc_view);
 135                 vnc_view->start();
 136         }
 137 }
 138
 139 void MainWindow::grabZoomKeys(bool grab)
 140 {
 141 #ifdef Q_WS_MAEMO_5
 142         unsigned long val = (grab)?1:0;
 143         Atom atom = XInternAtom(QX11Info::display(), "_HILDON_ZOOM_KEY_ATOM", False);
 144         if(!atom) {
 145                 qWarning("Couldn't get zoom key atom");
 146                 return;
 147         }
 148         XChangeProperty(QX11Info::display(), winId(), atom, XA_INTEGER,
 149                 32, PropModeReplace, reinterpret_cast<unsigned char *>(&val), 1);
 150 #endif
 151 }
 152
 153 void MainWindow::closeEvent(QCloseEvent*) {
 154         grabZoomKeys(false);
 155
 156         QSettings settings;
 157         settings.setValue("show_toolbar", show_toolbar->isChecked());
 158         settings.setValue("zoomlevel", zoom_slider->value());
 159         settings.sync();
 160
 161         hide();
 162
 163         disconnectFromHost();
 164 }
 165
 166 void MainWindow::about() {
 167         QMessageBox::about(this, tr("About Presence VNC"),
 168                 tr("<center><h1>Presence VNC 0.7</h1>\
 169 <p>A touchscreen friendly VNC client</p>\
 170 <p><a href=\"https://garage.maemo.org/projects/presencevnc/\">https://garage.maemo.org/projects/presencevnc</a></p></center>\
 171 <small><p>&copy;2010 Christian Pulvermacher &lt;pulvermacher@gmx.de&gt;<br />\
 172 Based on KRDC, &copy; 2007-2008 Urs Wolfer<br />\
 173 and LibVNCServer, &copy; 2001-2003 Johannes E. Schindelin</p>\
 174 <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>"));
 175 }
 176
 177 void MainWindow::showConnectDialog()
 178 {
 179         ConnectDialog *connect_dialog = new ConnectDialog(this);
 180         connect(connect_dialog, SIGNAL(connectToHost(QString, int, int)),
 181                 this, SLOT(connectToHost(QString, int, int)));
 182         connect_dialog->exec();
 183 }
 184
 185 void MainWindow::connectToHost(QString url, int quality, int listen_port)
 186 {
 187         disconnectFromHost();
 188
 189         vnc_view = new VncView(this, url, RemoteView::Quality(quality), listen_port);
 190
 191         connect(vnc_view, SIGNAL(statusChanged(RemoteView::RemoteStatus)),
 192                 this, SLOT(statusChanged(RemoteView::RemoteStatus)));
 193         scroll_area->setWidget(vnc_view);
 194         vnc_view->start();
 195
 196         disconnect_action->setEnabled(true);
 197
 198         //reset key menu
 199         delete key_menu;
 200         key_menu = new KeyMenu(this);
 201 }
 202
 203 void MainWindow::disconnectFromHost()
 204 {
 205         if(!vnc_view)
 206                 return;
 207
 208         disconnect_action->setEnabled(false);
 209         toolbar->setEnabled(false);
 210         scroll_area->setWidget(0);
 211
 212         delete vnc_view;
 213         vnc_view = 0;
 214 }
 215
 216 void MainWindow::statusChanged(RemoteView::RemoteStatus status)
 217 {
 218         static RemoteView::RemoteStatus old_status = RemoteView::Disconnected;
 219
 220         switch(status) {
 221         case RemoteView::Connecting:
 222 #ifdef Q_WS_MAEMO_5
 223                 setAttribute(Qt::WA_Maemo5ShowProgressIndicator, true);
 224 #endif
 225                 break;
 226         case RemoteView::Connected:
 227 #ifdef Q_WS_MAEMO_5
 228                 setAttribute(Qt::WA_Maemo5ShowProgressIndicator, false);
 229 #endif
 230                 toolbar->setEnabled(true);
 231
 232                 vnc_view->setZoomLevel(zoom_slider->value());
 233                 vnc_view->forceFullRepaint();
 234                 break;
 235         case RemoteView::Disconnecting:
 236                 if(old_status == RemoteView::Disconnected) //Disconnecting also occurs while connecting, so check last state
 237                         break;
 238
 239                 if(disconnect_action->isEnabled()) //don't show when manually disconnecting
 240                         scroll_area->showMessage(tr("Connection lost"));
 241
 242                 //clean up
 243                 scroll_area->setWidget(0);
 244                 vnc_view = 0;
 245                 disconnect_action->setEnabled(false);
 246                 toolbar->setEnabled(false);
 247
 248                 //exit fullscreen mode
 249                 if(windowState() & Qt::WindowFullScreen)
 250                         setWindowState(windowState() ^ Qt::WindowFullScreen);
 251                 break;
 252         case RemoteView::Disconnected:
 253 #ifdef Q_WS_MAEMO_5
 254                 setAttribute(Qt::WA_Maemo5ShowProgressIndicator, false);
 255 #endif
 256                 if(old_status == RemoteView::Disconnecting) {
 257                         scroll_area->setWidget(0); //remove widget
 258                 }
 259                 break;
 260         default: //avoid compiler warnings
 261                 break;
 262         }
 263
 264         old_status = status;
 265 }
 266
 267 void MainWindow::forceRepaint()
 268 {
 269         if(vnc_view)
 270                 vnc_view->forceFullRepaint();
 271 }
 272
 273 //updates available screen space for current zoom level
 274 //necessary when rotating, showing fullscreen, etc.
 275 void MainWindow::updateScreenSpace()
 276 {
 277         if(vnc_view) {
 278                 vnc_view->setZoomLevel();
 279         }
 280 }
 281
 282 void MainWindow::updateScreenSpaceDelayed()
 283 {
 284         QTimer::singleShot(500, this, SLOT(updateScreenSpace()));
 285 }
 286
 287 void MainWindow::toggleFullscreen()
 288 {
 289         bool in_fullscreen = windowState() & Qt::WindowFullScreen;
 290
 291         //hide menu/toolbar in fullscreen (new state is !in_fullscreen)
 292         toolbar->setVisible(show_toolbar->isChecked() and in_fullscreen);
 293
 294 #ifndef Q_WS_MAEMO_5
 295         //menu bar is invisible by default on maemo
 296         menuBar()->setVisible(in_fullscreen);
 297 #endif
 298
 299         setWindowState(windowState() ^ Qt::WindowFullScreen);
 300         updateScreenSpaceDelayed();
 301 }
 302
 303 void MainWindow::showKeyMenu()
 304 {
 305         key_menu->exec();
 306         vnc_view->sendKeySequence(key_menu->getKeySequence());
 307 }
 308
 309 void MainWindow::showPreferences()
 310 {
 311         Preferences *p = new Preferences(this);
 312         p->exec();
 313         delete p;
 314
 315         reloadSettings();
 316 }
 317
 318 void MainWindow::reloadSettings()
 319 {
 320 #ifdef Q_WS_MAEMO_5
 321         QSettings settings;
 322         int rotation = settings.value("screen_rotation", 0).toInt();
 323         setAttribute(Qt::WA_Maemo5AutoOrientation, rotation == 0);
 324         setAttribute(Qt::WA_Maemo5LandscapeOrientation, rotation == 1);
 325         setAttribute(Qt::WA_Maemo5PortraitOrientation, rotation == 2);
 326 #endif
 327
 328         if(vnc_view)
 329                 vnc_view->reloadSettings();
 330 }
 331
 332 void MainWindow::resizeEvent(QResizeEvent *event)
 333 {
 334         QMainWindow::resizeEvent(event);
 335
 336         updateScreenSpace();
 337         if(vnc_view)
 338                 vnc_view->setZoomLevel(zoom_slider->value());
 339
 340 #ifdef Q_WS_MAEMO_5
 341         //hide zoom slider in portrait mode
 342         zoom_slider->setVisible(height() < width());
 343 #endif
 344 }
 345
 346 void MainWindow::showInputPanel()
 347 {
 348 #ifdef Q_WS_MAEMO_5
 349         //TODO: when hardware keyboard is open, this will only cause the IM to mess up 'real' key events
 350         vnc_view->setAttribute(Qt::WA_InputMethodEnabled, true);
 351         vnc_view->setInputMethodHints(Qt::ImhNoAutoUppercase); //without this, IM starts with caps lock
 352
 353         QEvent event(QEvent::RequestSoftwareInputPanel);
 354         QApplication::sendEvent(vnc_view, &event);
 355 #endif
 356 }
 357
 358 void MainWindow::setZoomLevel(int level)
 359 {
 360         if(!vnc_view)
 361                 return;
 362
 363         const qreal old_factor = vnc_view->getZoomFactor();
 364         QPoint center = vnc_view->visibleRegion().boundingRect().center();
 365
 366         vnc_view->setZoomLevel(level);
 367
 368         const qreal new_factor = vnc_view->getZoomFactor();
 369
 370         //scroll to center, if zoom level actually changed
 371         if(old_factor != new_factor) {
 372                 center = center * (double(new_factor)/old_factor);
 373                 scroll_area->ensureVisible(center.x(), center.y(),
 374                         vnc_view->visibleRegion().boundingRect().width()/2,
 375                         vnc_view->visibleRegion().boundingRect().height()/2);
 376                 vnc_view->update();
 377
 378                 scroll_area->showMessage(tr("Zoom: %1\%").arg(qRound(100*new_factor)));
 379         }
 380 }
 381
 382 void MainWindow::zoomSliderReleased()
 383 {
 384         static QTime time;
 385         if(!time.isNull() and time.elapsed() < 700) //double clicked
 386                 zoom_slider->setValue(95); //100%
 387         else
 388                 forceRepaint();
 389
 390         time.restart();
 391 }