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, bool view_only):
  37         QMainWindow(0),
  38         vnc_view(0),
  39         scroll_area(new ScrollArea(0)),
  40         input_toolbuttons(new QActionGroup(this)),
  41         key_menu(new KeyMenu(this))
  42 {
  43         setWindowTitle("Presence VNC");
  44 #ifdef Q_WS_MAEMO_5
  45         setContextMenuPolicy(Qt::NoContextMenu);
  46         setAttribute(Qt::WA_Maemo5StackedWindow);
  47 #endif
  48
  49         migrateConfiguration();
  50
  51         //set up toolbar
  52         toolbar = new QToolBar(0);
  53         input_toolbuttons->addAction(toolbar->addAction(QChar(0x2026), this, SLOT(showKeyMenu()))); //"..." button
  54         input_toolbuttons->addAction(toolbar->addAction(tr("Tab"), this, SLOT(sendTab())));
  55         input_toolbuttons->addAction(toolbar->addAction(tr("Esc"), this, SLOT(sendEsc())));
  56         input_toolbuttons->addAction(toolbar->addAction(tr("PgUp"), this, SLOT(sendPgUp())));
  57         input_toolbuttons->addAction(toolbar->addAction(tr("PgDn"), this, SLOT(sendPgDn())));
  58 #ifdef Q_WS_MAEMO_5
  59         input_toolbuttons->addAction(toolbar->addAction(QIcon("/usr/share/icons/hicolor/48x48/hildon/chat_enter.png"), "", this, SLOT(sendReturn())));
  60         input_toolbuttons->addAction(toolbar->addAction(QIcon("/usr/share/icons/hicolor/48x48/hildon/control_keyboard.png"), "", this, SLOT(showInputPanel())));
  61 #endif
  62
  63         QSettings settings;
  64         zoom_slider = new QSlider(Qt::Horizontal, 0);
  65         zoom_slider->setRange(0, 100);
  66         connect(zoom_slider, SIGNAL(valueChanged(int)),
  67                 this, SLOT(setZoomLevel(int)));
  68         connect(zoom_slider, SIGNAL(sliderReleased()),
  69                 this, SLOT(zoomSliderReleased()));
  70         zoom_slider->setValue(settings.value("zoomlevel", 95).toInt());
  71         toolbar->addWidget(zoom_slider);
  72
  73         toolbar->addAction(QIcon("/usr/share/icons/hicolor/48x48/hildon/general_fullsize.png"), "", this, SLOT(toggleFullscreen()));
  74         addToolBar(toolbar);
  75         toolbar->setVisible(settings.value("show_toolbar", true).toBool());
  76         toolbar->setEnabled(false);
  77
  78         //set up menu
  79         QAction *connect_action = new QAction(tr("Connect"), this);
  80         disconnect_action = new QAction(tr("Disconnect"), this);
  81         show_toolbar = new QAction(tr("Show toolbar"), this);
  82         show_toolbar->setCheckable(true);
  83         show_toolbar->setChecked(settings.value("show_toolbar", true).toBool());
  84         QAction *pref_action = new QAction(tr("Preferences"), this);
  85         QAction *about_action = new QAction(tr("About"), this);
  86
  87 #ifdef Q_WS_MAEMO_5
  88         menuBar()->addAction(connect_action);
  89         menuBar()->addAction(disconnect_action);
  90         menuBar()->addAction(show_toolbar);
  91         menuBar()->addAction(pref_action);
  92         menuBar()->addAction(about_action);
  93 #else
  94         QMenu* session_menu = menuBar()->addMenu(tr("&Session"));
  95         session_menu->addAction(connect_action);
  96         session_menu->addAction(disconnect_action);
  97         session_menu->addSeparator();
  98         session_menu->addAction(pref_action);
  99         session_menu->addSeparator();
 100         session_menu->addAction(tr("&Quit"), this, SLOT(close()));
 101
 102         QMenu* view_menu = menuBar()->addMenu(tr("&View"));
 103         view_menu->addAction(show_toolbar);
 104
 105         QMenu* help_menu = menuBar()->addMenu(tr("&Help"));
 106         help_menu->addAction(about_action);
 107 #endif
 108
 109         connect(about_action, SIGNAL(triggered()),
 110                 this, SLOT(about()));
 111         connect(pref_action, SIGNAL(triggered()),
 112                 this, SLOT(showPreferences()));
 113         connect(connect_action, SIGNAL(triggered()),
 114                 this, SLOT(showConnectDialog()));
 115         connect(disconnect_action, SIGNAL(triggered()),
 116                 this, SLOT(disconnectFromHost()));
 117         connect(show_toolbar, SIGNAL(toggled(bool)),
 118                 toolbar, SLOT(setVisible(bool)));
 119         connect(show_toolbar, SIGNAL(toggled(bool)),
 120                 this, SLOT(updateScreenSpaceDelayed()));
 121
 122         setCentralWidget(scroll_area);
 123
 124         FullScreenExitButton* fullscreen_exit_button = new FullScreenExitButton(this);
 125         connect(fullscreen_exit_button, SIGNAL(clicked()),
 126                 this, SLOT(toggleFullscreen()));
 127
 128         grabZoomKeys(true);
 129         reloadSettings();
 130
 131         if(url.isEmpty()) {
 132                 disconnect_action->setEnabled(false);
 133                 showConnectDialog();
 134         } else {
 135                 vnc_view = new VncView(this, url, RemoteView::Quality(quality));
 136                 connect(vnc_view, SIGNAL(statusChanged(RemoteView::RemoteStatus)),
 137                         this, SLOT(statusChanged(RemoteView::RemoteStatus)));
 138                 scroll_area->setWidget(vnc_view);
 139                 vnc_view->setViewOnly(view_only);
 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 0.8</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
 203         //reset key menu
 204         delete key_menu;
 205         key_menu = new KeyMenu(this);
 206 }
 207
 208 void MainWindow::disconnectFromHost()
 209 {
 210         if(!vnc_view)
 211                 return;
 212
 213         disconnect_action->setEnabled(false);
 214         toolbar->setEnabled(false);
 215         scroll_area->setWidget(0);
 216
 217         delete vnc_view;
 218         vnc_view = 0;
 219 }
 220
 221 void MainWindow::statusChanged(RemoteView::RemoteStatus status)
 222 {
 223         static RemoteView::RemoteStatus old_status = RemoteView::Disconnected;
 224
 225         switch(status) {
 226         case RemoteView::Connecting:
 227 #ifdef Q_WS_MAEMO_5
 228                 setAttribute(Qt::WA_Maemo5ShowProgressIndicator, true);
 229 #endif
 230                 break;
 231         case RemoteView::Connected:
 232 #ifdef Q_WS_MAEMO_5
 233                 setAttribute(Qt::WA_Maemo5ShowProgressIndicator, false);
 234 #endif
 235                 toolbar->setEnabled(true);
 236
 237                 //disable key input buttons in view only mode
 238                 input_toolbuttons->setEnabled(!vnc_view->viewOnly());
 239
 240                 vnc_view->setZoomLevel(zoom_slider->value());
 241                 vnc_view->useFastTransformations(false);
 242                 vnc_view->repaint();
 243                 break;
 244         case RemoteView::Disconnecting:
 245                 if(old_status == RemoteView::Disconnected) //Disconnecting also occurs while connecting, so check last state
 246                         break;
 247
 248                 if(disconnect_action->isEnabled()) //don't show when manually disconnecting
 249                         scroll_area->showMessage(tr("Connection lost"));
 250
 251                 //clean up
 252                 scroll_area->setWidget(0);
 253                 vnc_view = 0;
 254                 disconnect_action->setEnabled(false);
 255                 toolbar->setEnabled(false);
 256
 257                 //exit fullscreen mode
 258                 if(windowState() & Qt::WindowFullScreen)
 259                         setWindowState(windowState() ^ Qt::WindowFullScreen);
 260                 break;
 261         case RemoteView::Disconnected:
 262 #ifdef Q_WS_MAEMO_5
 263                 setAttribute(Qt::WA_Maemo5ShowProgressIndicator, false);
 264 #endif
 265                 if(old_status == RemoteView::Disconnecting) {
 266                         scroll_area->setWidget(0); //remove widget
 267                 }
 268                 break;
 269         default: //avoid compiler warnings
 270                 break;
 271         }
 272
 273         old_status = status;
 274 }
 275
 276 //updates available screen space for current zoom level
 277 //necessary when rotating, showing fullscreen, etc.
 278 void MainWindow::updateScreenSpace()
 279 {
 280         if(vnc_view) {
 281                 vnc_view->setZoomLevel();
 282         }
 283 }
 284
 285 void MainWindow::updateScreenSpaceDelayed()
 286 {
 287         QTimer::singleShot(500, this, SLOT(updateScreenSpace()));
 288 }
 289
 290 void MainWindow::toggleFullscreen()
 291 {
 292         bool in_fullscreen = windowState() & Qt::WindowFullScreen;
 293
 294         //hide menu/toolbar in fullscreen (new state is !in_fullscreen)
 295         toolbar->setVisible(show_toolbar->isChecked() and in_fullscreen);
 296
 297 #ifndef Q_WS_MAEMO_5
 298         //menu bar is invisible by default on maemo
 299         menuBar()->setVisible(in_fullscreen);
 300 #endif
 301
 302         setWindowState(windowState() ^ Qt::WindowFullScreen);
 303         updateScreenSpaceDelayed();
 304 }
 305
 306 void MainWindow::showKeyMenu()
 307 {
 308         key_menu->exec();
 309         vnc_view->sendKeySequence(key_menu->getKeySequence());
 310 }
 311
 312 void MainWindow::showPreferences()
 313 {
 314         Preferences *p = new Preferences(this);
 315         p->exec();
 316         delete p;
 317
 318         reloadSettings();
 319 }
 320
 321 void MainWindow::reloadSettings()
 322 {
 323         QSettings settings;
 324         zoom_to_cursor = settings.value("zoom_to_cursor", true).toBool();
 325
 326 #ifdef Q_WS_MAEMO_5
 327         int rotation = settings.value("screen_rotation", 0).toInt();
 328         setAttribute(Qt::WA_Maemo5AutoOrientation, rotation == 0);
 329         setAttribute(Qt::WA_Maemo5LandscapeOrientation, rotation == 1);
 330         setAttribute(Qt::WA_Maemo5PortraitOrientation, rotation == 2);
 331 #endif
 332
 333         if(vnc_view)
 334                 vnc_view->reloadSettings();
 335 }
 336
 337 void MainWindow::resizeEvent(QResizeEvent *event)
 338 {
 339         QMainWindow::resizeEvent(event);
 340
 341         updateScreenSpace();
 342         if(vnc_view)
 343                 vnc_view->setZoomLevel(zoom_slider->value());
 344
 345 #ifdef Q_WS_MAEMO_5
 346         //hide zoom slider in portrait mode
 347         zoom_slider->setVisible(height() < width());
 348 #endif
 349 }
 350
 351 void MainWindow::showInputPanel()
 352 {
 353 #ifdef Q_WS_MAEMO_5
 354         //TODO: when hardware keyboard is open, this will only cause the IM to mess up 'real' key events
 355         vnc_view->setAttribute(Qt::WA_InputMethodEnabled, true);
 356         vnc_view->setInputMethodHints(Qt::ImhNoAutoUppercase); //without this, IM starts with caps lock
 357
 358         QEvent event(QEvent::RequestSoftwareInputPanel);
 359         QApplication::sendEvent(vnc_view, &event);
 360 #endif
 361 }
 362
 363 void MainWindow::setZoomLevel(int level)
 364 {
 365         if(!vnc_view)
 366                 return;
 367
 368         const qreal old_factor = vnc_view->zoomFactor();
 369         QPoint center = vnc_view->visibleRegion().boundingRect().center();
 370
 371         vnc_view->setZoomLevel(level);
 372
 373         const qreal new_factor = vnc_view->zoomFactor();
 374
 375         //scroll to center, if zoom level actually changed
 376         if(old_factor != new_factor) {
 377                 if(zoom_to_cursor)
 378                         center = new_factor * vnc_view->cursorPosition();
 379                 else //zoom to center of visible region
 380                         center = center * (double(new_factor)/old_factor);
 381
 382                 scroll_area->ensureVisible(center.x(), center.y(),
 383                         vnc_view->visibleRegion().boundingRect().width()/2,
 384                         vnc_view->visibleRegion().boundingRect().height()/2);
 385
 386                 vnc_view->useFastTransformations(zoom_slider->isSliderDown());
 387                 vnc_view->update();
 388
 389                 scroll_area->showMessage(tr("Zoom: %1\%").arg(qRound(100*new_factor)));
 390         }
 391 }
 392
 393 void MainWindow::zoomSliderReleased()
 394 {
 395         static QTime time;
 396         if(!time.isNull() and time.elapsed() < 500) //double clicked
 397                 zoom_slider->setValue(95); //100%
 398
 399         time.restart();
 400
 401         //stopped zooming, reenable high quality
 402         vnc_view->useFastTransformations(false);
 403 }
 404
 405 void MainWindow::sendTab() { vnc_view->sendKey(Qt::Key_Tab); }
 406 void MainWindow::sendEsc() { vnc_view->sendKey(Qt::Key_Escape); }
 407 void MainWindow::sendPgUp() { vnc_view->sendKey(Qt::Key_PageUp); }
 408 void MainWindow::sendPgDn() { vnc_view->sendKey(Qt::Key_PageDown); }
 409 void MainWindow::sendReturn() { vnc_view->sendKey(Qt::Key_Return); }