vcs.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 "vncview.h"
  25
  26 #ifdef Q_WS_MAEMO_5
  27 #include <QtMaemo5>
  28 #include <QX11Info>
  29
  30 #include <X11/Xlib.h>
  31 #include <X11/Xatom.h>
  32 #endif
  33
  34
  35 MainWindow::MainWindow(QString url, int quality):
  36         QMainWindow(0),
  37         vnc_view(0),
  38         scroll_area(new ScrollArea(0)),
  39         key_menu(new KeyMenu(this))
  40 {
  41         setWindowTitle("Presence VNC");
  42         setContextMenuPolicy(Qt::NoContextMenu);
  43 #ifdef Q_WS_MAEMO_5
  44         setAttribute(Qt::WA_Maemo5StackedWindow);
  45 #endif
  46
  47         migrateConfiguration();
  48
  49         //set up toolbar
  50         toolbar = new QToolBar(0);
  51         toolbar->addAction(QChar(0x2026), this, SLOT(showKeyMenu())); //"..." button
  52         toolbar->addAction(tr("Tab"), this, SLOT(sendTab()));
  53         toolbar->addAction(tr("Esc"), this, SLOT(sendEsc()));
  54         toolbar->addAction(tr("PgUp"), this, SLOT(sendPgUp()));
  55         toolbar->addAction(tr("PgDn"), this, SLOT(sendPgDn()));
  56 #ifdef Q_WS_MAEMO_5
  57         toolbar->addAction(QIcon("/usr/share/icons/hicolor/48x48/hildon/chat_enter.png"), "", this, SLOT(sendReturn()));
  58         toolbar->addAction(QIcon("/usr/share/icons/hicolor/48x48/hildon/control_keyboard.png"), "", this, SLOT(showInputPanel()));
  59 #endif
  60
  61         /*
  62         //move remaining buttons to the right
  63         QWidget *spacer = new QWidget();
  64         spacer->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
  65         toolbar->addWidget(spacer);
  66         */
  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(forceRepaint()));
  75         zoom_slider->setValue(settings.value("zoomlevel", 95).toInt());
  76         toolbar->addWidget(zoom_slider);
  77
  78         toolbar->addAction(QIcon("/usr/share/icons/hicolor/48x48/hildon/general_fullsize.png"), "", this, SLOT(toggleFullscreen()));
  79         addToolBar(toolbar);
  80         toolbar->setVisible(settings.value("show_toolbar", true).toBool());
  81         toolbar->setEnabled(false);
  82
  83         //set up menu
  84         QAction *connect_action = new QAction(tr("Connect"), this);
  85         disconnect_action = new QAction(tr("Disconnect"), this);
  86         show_toolbar = new QAction(tr("Show Toolbar"), this);
  87         show_toolbar->setCheckable(true);
  88         show_toolbar->setChecked(settings.value("show_toolbar", true).toBool());
  89         QAction *pref_action = new QAction(tr("Preferences"), this);
  90         QAction *about_action = new QAction(tr("About"), this);
  91
  92 #ifdef Q_WS_MAEMO_5
  93         menuBar()->addAction(connect_action);
  94         menuBar()->addAction(disconnect_action);
  95         menuBar()->addAction(show_toolbar);
  96         menuBar()->addAction(pref_action);
  97         menuBar()->addAction(about_action);
  98 #else
  99         QMenu* session_menu = menuBar()->addMenu(tr("&Session"));
 100         session_menu->addAction(connect_action);
 101         session_menu->addAction(disconnect_action);
 102         session_menu->addSeparator();
 103         session_menu->addAction(pref_action);
 104         session_menu->addSeparator();
 105         session_menu->addAction(tr("&Quit"), this, SLOT(close()));
 106
 107         QMenu* view_menu = menuBar()->addMenu(tr("&View"));
 108         view_menu->addAction(show_toolbar);
 109
 110         QMenu* help_menu = menuBar()->addMenu(tr("&Help"));
 111         help_menu->addAction(about_action);
 112 #endif
 113
 114         connect(about_action, SIGNAL(triggered()),
 115                 this, SLOT(about()));
 116         connect(pref_action, SIGNAL(triggered()),
 117                 this, SLOT(showPreferences()));
 118         connect(connect_action, SIGNAL(triggered()),
 119                 this, SLOT(showConnectDialog()));
 120         connect(disconnect_action, SIGNAL(triggered()),
 121                 this, SLOT(disconnectFromHost()));
 122         connect(show_toolbar, SIGNAL(toggled(bool)),
 123                 toolbar, SLOT(setVisible(bool)));
 124         connect(show_toolbar, SIGNAL(toggled(bool)),
 125                 this, SLOT(forceResizeDelayed()));
 126
 127         setCentralWidget(scroll_area);
 128         new FullScreenExitButton(this);
 129
 130         grabZoomKeys(true);
 131         reloadSettings();
 132
 133         if(url.isNull()) {
 134                 disconnect_action->setEnabled(false);
 135                 showConnectDialog();
 136         } else {
 137                 vnc_view = new VncView(this, url, RemoteView::Quality(quality));
 138                 connect(vnc_view, SIGNAL(statusChanged(RemoteView::RemoteStatus)),
 139                         this, SLOT(statusChanged(RemoteView::RemoteStatus)));
 140                 scroll_area->setWidget(vnc_view);
 141                 vnc_view->start();
 142         }
 143 }
 144
 145 void MainWindow::grabZoomKeys(bool grab)
 146 {
 147 #ifdef Q_WS_MAEMO_5
 148         unsigned long val = (grab)?1:0;
 149         Atom atom = XInternAtom(QX11Info::display(), "_HILDON_ZOOM_KEY_ATOM", False);
 150         if(!atom) {
 151                 qWarning("Couldn't get zoom key atom");
 152                 return;
 153         }
 154         XChangeProperty(QX11Info::display(), winId(), atom, XA_INTEGER,
 155                 32, PropModeReplace, reinterpret_cast<unsigned char *>(&val), 1);
 156 #endif
 157 }
 158
 159 void MainWindow::closeEvent(QCloseEvent*) {
 160         grabZoomKeys(false);
 161
 162         QSettings settings;
 163         settings.setValue("show_toolbar", show_toolbar->isChecked());
 164         settings.setValue("zoomlevel", zoom_slider->value());
 165         settings.sync();
 166
 167         hide();
 168
 169         disconnectFromHost();
 170 }
 171
 172 void MainWindow::about() {
 173         QMessageBox::about(this, tr("About Presence VNC"),
 174                 tr("<center><h1>Presence VNC 0.6</h1>\
 175 <p>A touchscreen friendly VNC client</p>\
 176 <p><a href=\"https://garage.maemo.org/projects/presencevnc/\">https://garage.maemo.org/projects/presencevnc</a></p></center>\
 177 <small><p>&copy;2010 Christian Pulvermacher &lt;pulvermacher@gmx.de&gt;<br />\
 178 Based on KRDC, &copy; 2007-2008 Urs Wolfer<br />\
 179 and LibVNCServer, &copy; 2001-2003 Johannes E. Schindelin</p>\
 180 <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>"));
 181 }
 182
 183 void MainWindow::showConnectDialog()
 184 {
 185         ConnectDialog *connect_dialog = new ConnectDialog(this);
 186         connect(connect_dialog, SIGNAL(connectToHost(QString, int, int)),
 187                 this, SLOT(connectToHost(QString, int, int)));
 188         connect_dialog->exec();
 189 }
 190
 191 void MainWindow::connectToHost(QString url, int quality, int listen_port)
 192 {
 193         disconnectFromHost();
 194
 195         vnc_view = new VncView(this, url, RemoteView::Quality(quality), listen_port);
 196
 197         connect(vnc_view, SIGNAL(statusChanged(RemoteView::RemoteStatus)),
 198                 this, SLOT(statusChanged(RemoteView::RemoteStatus)));
 199         scroll_area->setWidget(vnc_view);
 200         vnc_view->start();
 201
 202         disconnect_action->setEnabled(true);
 203
 204         //reset key menu
 205         delete key_menu;
 206         key_menu = new KeyMenu(this);
 207 }
 208
 209 void MainWindow::disconnectFromHost()
 210 {
 211         if(!vnc_view)
 212                 return;
 213
 214         scroll_area->setWidget(0);
 215
 216         delete vnc_view;
 217         vnc_view = 0;
 218         disconnect_action->setEnabled(false);
 219         toolbar->setEnabled(false);
 220 }
 221
 222 void MainWindow::statusChanged(RemoteView::RemoteStatus status)
 223 {
 224         static RemoteView::RemoteStatus old_status = RemoteView::Disconnected;
 225
 226         switch(status) {
 227         case RemoteView::Connecting:
 228 #ifdef Q_WS_MAEMO_5
 229                 setAttribute(Qt::WA_Maemo5ShowProgressIndicator, true);
 230 #endif
 231                 break;
 232         case RemoteView::Connected:
 233 #ifdef Q_WS_MAEMO_5
 234                 setAttribute(Qt::WA_Maemo5ShowProgressIndicator, false);
 235 #endif
 236                 toolbar->setEnabled(true);
 237
 238                 vnc_view->setZoomLevel(zoom_slider->value());
 239                 vnc_view->forceFullRepaint();
 240                 break;
 241         case RemoteView::Disconnecting:
 242                 if(old_status != RemoteView::Disconnected) { //Disconnecting also occurs while connecting, so check last state
 243 #ifdef Q_WS_MAEMO_5
 244                         QMaemo5InformationBox::information(this, tr("Connection lost"));
 245 #endif
 246
 247                         //clean up
 248                         scroll_area->setWidget(0);
 249                         vnc_view = 0;
 250                         disconnect_action->setEnabled(false);
 251                         toolbar->setEnabled(false);
 252
 253                         //exit fullscreen mode
 254                         if(windowState() & Qt::WindowFullScreen)
 255                                 setWindowState(windowState() ^ Qt::WindowFullScreen);
 256                 }
 257                 break;
 258         case RemoteView::Disconnected:
 259 #ifdef Q_WS_MAEMO_5
 260                 setAttribute(Qt::WA_Maemo5ShowProgressIndicator, false);
 261 #endif
 262                 if(old_status == RemoteView::Disconnecting) {
 263                         scroll_area->setWidget(0); //remove widget
 264                 }
 265                 break;
 266         default: //avoid compiler warnings
 267                 break;
 268         }
 269
 270         old_status = status;
 271 }
 272
 273 void MainWindow::forceRepaint()
 274 {
 275         if(vnc_view)
 276                 vnc_view->forceFullRepaint();
 277 }
 278
 279 //updates available screen space for current zoom level
 280 //necessary when rotating, showing fullscreen, etc.
 281 void MainWindow::forceResize()
 282 {
 283         if(vnc_view) {
 284                 vnc_view->resize(scroll_area->size());
 285         }
 286 }
 287
 288 void MainWindow::forceResizeDelayed()
 289 {
 290         QTimer::singleShot(500, this, SLOT(forceResize()));
 291 }
 292
 293 void MainWindow::toggleFullscreen()
 294 {
 295         bool in_fullscreen = windowState() & Qt::WindowFullScreen;
 296
 297         //hide menu/toolbar in fullscreen (new state is !in_fullscreen)
 298         toolbar->setVisible(show_toolbar->isChecked() and in_fullscreen);
 299
 300 #ifndef Q_WS_MAEMO_5
 301         //menu bar is invisible by default on maemo
 302         menuBar()->setVisible(in_fullscreen);
 303 #endif
 304
 305         setWindowState(windowState() ^ Qt::WindowFullScreen);
 306         forceResizeDelayed();
 307 }
 308
 309 void MainWindow::showKeyMenu()
 310 {
 311         key_menu->exec();
 312         vnc_view->sendKeySequence(key_menu->getKeySequence());
 313 }
 314
 315 void MainWindow::showPreferences()
 316 {
 317         Preferences *p = new Preferences(this);
 318         p->exec();
 319         delete p;
 320
 321         reloadSettings();
 322 }
 323
 324 void MainWindow::reloadSettings()
 325 {
 326         QSettings settings;
 327 #ifdef Q_WS_MAEMO_5
 328         int rotation = settings.value("screen_rotation", 0).toInt();
 329         setAttribute(Qt::WA_Maemo5AutoOrientation, rotation == 0);
 330         setAttribute(Qt::WA_Maemo5LandscapeOrientation, rotation == 1);
 331         setAttribute(Qt::WA_Maemo5PortraitOrientation, rotation == 2);
 332 #endif
 333
 334         if(vnc_view)
 335                 vnc_view->reloadSettings();
 336 }
 337
 338 void MainWindow::resizeEvent(QResizeEvent *event)
 339 {
 340         QMainWindow::resizeEvent(event);
 341
 342         forceResize();
 343         if(vnc_view)
 344                 vnc_view->setZoomLevel(zoom_slider->value());
 345
 346 #ifdef Q_WS_MAEMO_5
 347         //hide zoom slider in portrait mode
 348         zoom_slider->setVisible(height() < width());
 349 #endif
 350 }
 351
 352 void MainWindow::showInputPanel()
 353 {
 354 #ifdef Q_WS_MAEMO_5
 355         //TODO: when hardware keyboard is open, this will only cause the IM to mess up 'real' key events
 356         vnc_view->setAttribute(Qt::WA_InputMethodEnabled, true);
 357         vnc_view->setInputMethodHints(Qt::ImhNoAutoUppercase); //without this, IM starts with caps lock
 358
 359         QEvent event(QEvent::RequestSoftwareInputPanel);
 360         QApplication::sendEvent(vnc_view, &event);
 361 #endif
 362 }
 363
 364 void MainWindow::setZoomLevel(int level)
 365 {
 366         if(!vnc_view)
 367                 return;
 368
 369         int old_width = vnc_view->width();
 370         QPoint center = vnc_view->visibleRegion().boundingRect().center();
 371
 372         vnc_view->setZoomLevel(level);
 373
 374         int new_width = vnc_view->width();
 375
 376         //scroll to center, if zoom level actually changed
 377         if(new_width != old_width) {
 378                 center = center * (double(new_width)/old_width);
 379                 scroll_area->ensureVisible(center.x(), center.y(),
 380                         scroll_area->width()/2, scroll_area->height()/2);
 381                 vnc_view->update();
 382         }
 383 }