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