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
 123         FullScreenExitButton* fullscreen_exit_button = new FullScreenExitButton(this);
 124         connect(fullscreen_exit_button, SIGNAL(clicked()),
 125                 this, SLOT(toggleFullscreen()));
 126
 127         grabZoomKeys(true);
 128         reloadSettings();
 129
 130         if(url.isNull()) {
 131                 disconnect_action->setEnabled(false);
 132                 showConnectDialog();
 133         } else {
 134                 vnc_view = new VncView(this, url, RemoteView::Quality(quality));
 135                 connect(vnc_view, SIGNAL(statusChanged(RemoteView::RemoteStatus)),
 136                         this, SLOT(statusChanged(RemoteView::RemoteStatus)));
 137                 scroll_area->setWidget(vnc_view);
 138                 vnc_view->start();
 139         }
 140 }
 141
 142 void MainWindow::grabZoomKeys(bool grab)
 143 {
 144 #ifdef Q_WS_MAEMO_5
 145         unsigned long val = (grab)?1:0;
 146         Atom atom = XInternAtom(QX11Info::display(), "_HILDON_ZOOM_KEY_ATOM", False);
 147         if(!atom) {
 148                 qWarning("Couldn't get zoom key atom");
 149                 return;
 150         }
 151         XChangeProperty(QX11Info::display(), winId(), atom, XA_INTEGER,
 152                 32, PropModeReplace, reinterpret_cast<unsigned char *>(&val), 1);
 153 #endif
 154 }
 155
 156 void MainWindow::closeEvent(QCloseEvent*) {
 157         grabZoomKeys(false);
 158
 159         QSettings settings;
 160         settings.setValue("show_toolbar", show_toolbar->isChecked());
 161         settings.setValue("zoomlevel", zoom_slider->value());
 162         settings.sync();
 163
 164         hide();
 165
 166         disconnectFromHost();
 167 }
 168
 169 void MainWindow::about() {
 170         QMessageBox::about(this, tr("About Presence VNC"),
 171                 tr("<center><h1>Presence VNC 0.7</h1>\
 172 <p>A touchscreen friendly VNC client</p>\
 173 <p><a href=\"https://garage.maemo.org/projects/presencevnc/\">https://garage.maemo.org/projects/presencevnc</a></p></center>\
 174 <small><p>&copy;2010 Christian Pulvermacher &lt;pulvermacher@gmx.de&gt;<br />\
 175 Based on KRDC, &copy; 2007-2008 Urs Wolfer<br />\
 176 and LibVNCServer, &copy; 2001-2003 Johannes E. Schindelin</p>\
 177 <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>"));
 178 }
 179
 180 void MainWindow::showConnectDialog()
 181 {
 182         ConnectDialog *connect_dialog = new ConnectDialog(this);
 183         connect(connect_dialog, SIGNAL(connectToHost(QString, int, int)),
 184                 this, SLOT(connectToHost(QString, int, int)));
 185         connect_dialog->exec();
 186 }
 187
 188 void MainWindow::connectToHost(QString url, int quality, int listen_port)
 189 {
 190         disconnectFromHost();
 191
 192         vnc_view = new VncView(this, url, RemoteView::Quality(quality), listen_port);
 193
 194         connect(vnc_view, SIGNAL(statusChanged(RemoteView::RemoteStatus)),
 195                 this, SLOT(statusChanged(RemoteView::RemoteStatus)));
 196         scroll_area->setWidget(vnc_view);
 197         vnc_view->start();
 198
 199         disconnect_action->setEnabled(true);
 200
 201         //reset key menu
 202         delete key_menu;
 203         key_menu = new KeyMenu(this);
 204 }
 205
 206 void MainWindow::disconnectFromHost()
 207 {
 208         if(!vnc_view)
 209                 return;
 210
 211         disconnect_action->setEnabled(false);
 212         toolbar->setEnabled(false);
 213         scroll_area->setWidget(0);
 214
 215         delete vnc_view;
 216         vnc_view = 0;
 217 }
 218
 219 void MainWindow::statusChanged(RemoteView::RemoteStatus status)
 220 {
 221         static RemoteView::RemoteStatus old_status = RemoteView::Disconnected;
 222
 223         switch(status) {
 224         case RemoteView::Connecting:
 225 #ifdef Q_WS_MAEMO_5
 226                 setAttribute(Qt::WA_Maemo5ShowProgressIndicator, true);
 227 #endif
 228                 break;
 229         case RemoteView::Connected:
 230 #ifdef Q_WS_MAEMO_5
 231                 setAttribute(Qt::WA_Maemo5ShowProgressIndicator, false);
 232 #endif
 233                 toolbar->setEnabled(true);
 234
 235                 vnc_view->setZoomLevel(zoom_slider->value());
 236                 vnc_view->useFastTransformations(false);
 237                 vnc_view->repaint();
 238                 break;
 239         case RemoteView::Disconnecting:
 240                 if(old_status == RemoteView::Disconnected) //Disconnecting also occurs while connecting, so check last state
 241                         break;
 242
 243                 if(disconnect_action->isEnabled()) //don't show when manually disconnecting
 244                         scroll_area->showMessage(tr("Connection lost"));
 245
 246                 //clean up
 247                 scroll_area->setWidget(0);
 248                 vnc_view = 0;
 249                 disconnect_action->setEnabled(false);
 250                 toolbar->setEnabled(false);
 251
 252                 //exit fullscreen mode
 253                 if(windowState() & Qt::WindowFullScreen)
 254                         setWindowState(windowState() ^ Qt::WindowFullScreen);
 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 //updates available screen space for current zoom level
 272 //necessary when rotating, showing fullscreen, etc.
 273 void MainWindow::updateScreenSpace()
 274 {
 275         if(vnc_view) {
 276                 vnc_view->setZoomLevel();
 277         }
 278 }
 279
 280 void MainWindow::updateScreenSpaceDelayed()
 281 {
 282         QTimer::singleShot(500, this, SLOT(updateScreenSpace()));
 283 }
 284
 285 void MainWindow::toggleFullscreen()
 286 {
 287         bool in_fullscreen = windowState() & Qt::WindowFullScreen;
 288
 289         //hide menu/toolbar in fullscreen (new state is !in_fullscreen)
 290         toolbar->setVisible(show_toolbar->isChecked() and in_fullscreen);
 291
 292 #ifndef Q_WS_MAEMO_5
 293         //menu bar is invisible by default on maemo
 294         menuBar()->setVisible(in_fullscreen);
 295 #endif
 296
 297         setWindowState(windowState() ^ Qt::WindowFullScreen);
 298         updateScreenSpaceDelayed();
 299 }
 300
 301 void MainWindow::showKeyMenu()
 302 {
 303         key_menu->exec();
 304         vnc_view->sendKeySequence(key_menu->getKeySequence());
 305 }
 306
 307 void MainWindow::showPreferences()
 308 {
 309         Preferences *p = new Preferences(this);
 310         p->exec();
 311         delete p;
 312
 313         reloadSettings();
 314 }
 315
 316 void MainWindow::reloadSettings()
 317 {
 318         QSettings settings;
 319         zoom_to_cursor = settings.value("zoom_to_cursor", true).toBool();
 320
 321 #ifdef Q_WS_MAEMO_5
 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->zoomFactor();
 364         QPoint center = vnc_view->visibleRegion().boundingRect().center();
 365
 366         vnc_view->setZoomLevel(level);
 367
 368         const qreal new_factor = vnc_view->zoomFactor();
 369
 370         //scroll to center, if zoom level actually changed
 371         if(old_factor != new_factor) {
 372                 if(zoom_to_cursor)
 373                         center = new_factor * vnc_view->cursorPosition();
 374                 else //zoom to center of visible region
 375                         center = center * (double(new_factor)/old_factor);
 376
 377                 scroll_area->ensureVisible(center.x(), center.y(),
 378                         vnc_view->visibleRegion().boundingRect().width()/2,
 379                         vnc_view->visibleRegion().boundingRect().height()/2);
 380
 381                 vnc_view->useFastTransformations(zoom_slider->isSliderDown());
 382                 vnc_view->update();
 383
 384                 scroll_area->showMessage(tr("Zoom: %1\%").arg(qRound(100*new_factor)));
 385         }
 386 }
 387
 388 void MainWindow::zoomSliderReleased()
 389 {
 390         static QTime time;
 391         if(!time.isNull() and time.elapsed() < 500) //double clicked
 392                 zoom_slider->setValue(95); //100%
 393
 394         time.restart();
 395
 396         //stopped zooming, reenable high quality
 397         vnc_view->useFastTransformations(false);
 398 }