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 "scrollarea.h"
  25 #include "vncview.h"
  26
  27 #ifdef Q_WS_MAEMO_5
  28 #include <QtMaemo5>
  29 #include <QX11Info>
  30 #include <QDBusConnection>
  31
  32 #include <mce/mode-names.h>
  33 #include <mce/dbus-names.h>
  34
  35 #include <X11/Xlib.h>
  36 #include <X11/Xatom.h>
  37 #endif
  38
  39
  40 MainWindow::MainWindow(QString url, int quality, int listen_port, bool view_only):
  41         QMainWindow(0),
  42         vnc_view(0),
  43         scroll_area(new ScrollArea(0)),
  44         input_toolbuttons(new QActionGroup(this)),
  45         key_menu(0)
  46 {
  47         setWindowTitle("Presence VNC");
  48 #ifdef Q_WS_MAEMO_5
  49         setContextMenuPolicy(Qt::NoContextMenu);
  50         setAttribute(Qt::WA_Maemo5StackedWindow);
  51 #endif
  52
  53         migrateConfiguration();
  54
  55         //set up toolbar
  56         toolbar = new QToolBar(0);
  57         input_toolbuttons->addAction(toolbar->addAction(QChar(0x2026), this, SLOT(showKeyMenu()))); //"..." button
  58         input_toolbuttons->addAction(toolbar->addAction(tr("Tab"), this, SLOT(sendTab())));
  59         input_toolbuttons->addAction(toolbar->addAction(tr("Esc"), this, SLOT(sendEsc())));
  60         input_toolbuttons->addAction(toolbar->addAction(tr("PgUp"), this, SLOT(sendPgUp())));
  61         input_toolbuttons->addAction(toolbar->addAction(tr("PgDn"), this, SLOT(sendPgDn())));
  62 #ifdef Q_WS_MAEMO_5
  63         input_toolbuttons->addAction(toolbar->addAction(QIcon("/usr/share/icons/hicolor/48x48/hildon/chat_enter.png"), "", this, SLOT(sendReturn())));
  64         input_toolbuttons->addAction(toolbar->addAction(QIcon("/usr/share/icons/hicolor/48x48/hildon/control_keyboard.png"), "", this, SLOT(showInputPanel())));
  65 #endif
  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(zoomSliderReleased()));
  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         toolbar->setEnabled(false);
  81
  82         //set up menu
  83         QAction *connect_action = new QAction(tr("Connect"), this);
  84         disconnect_action = new QAction(tr("Disconnect"), this);
  85         show_toolbar = new QAction(tr("Show toolbar"), this);
  86         show_toolbar->setCheckable(true);
  87         show_toolbar->setChecked(settings.value("show_toolbar", true).toBool());
  88         QAction *pref_action = new QAction(tr("Preferences"), this);
  89         QAction *about_action = new QAction(tr("About"), this);
  90
  91 #ifdef Q_WS_MAEMO_5
  92         menuBar()->addAction(connect_action);
  93         menuBar()->addAction(disconnect_action);
  94         menuBar()->addAction(show_toolbar);
  95         menuBar()->addAction(pref_action);
  96         menuBar()->addAction(about_action);
  97 #else
  98         QMenu* session_menu = menuBar()->addMenu(tr("&Session"));
  99         session_menu->addAction(connect_action);
 100         session_menu->addAction(disconnect_action);
 101         session_menu->addSeparator();
 102         session_menu->addAction(pref_action);
 103         session_menu->addSeparator();
 104         session_menu->addAction(tr("&Quit"), this, SLOT(close()));
 105
 106         QMenu* view_menu = menuBar()->addMenu(tr("&View"));
 107         view_menu->addAction(show_toolbar);
 108
 109         QMenu* help_menu = menuBar()->addMenu(tr("&Help"));
 110         help_menu->addAction(about_action);
 111 #endif
 112
 113         connect(about_action, SIGNAL(triggered()),
 114                 this, SLOT(about()));
 115         connect(pref_action, SIGNAL(triggered()),
 116                 this, SLOT(showPreferences()));
 117         connect(connect_action, SIGNAL(triggered()),
 118                 this, SLOT(showConnectDialog()));
 119         connect(disconnect_action, SIGNAL(triggered()),
 120                 this, SLOT(disconnectFromHost()));
 121         connect(show_toolbar, SIGNAL(toggled(bool)),
 122                 toolbar, SLOT(setVisible(bool)));
 123         connect(show_toolbar, SIGNAL(toggled(bool)),
 124                 this, SLOT(updateScreenSpaceDelayed()));
 125 #ifdef Q_WS_MAEMO_5
 126     QDBusConnection::systemBus().connect("", MCE_SIGNAL_PATH, MCE_SIGNAL_IF, MCE_DISPLAY_SIG,
 127         this, SLOT(displayStateChanged(QString)));
 128 #endif
 129
 130         setCentralWidget(scroll_area);
 131
 132         FullScreenExitButton* fullscreen_exit_button = new FullScreenExitButton(this);
 133         connect(fullscreen_exit_button, SIGNAL(clicked()),
 134                 this, SLOT(toggleFullscreen()));
 135
 136         grabZoomKeys(true);
 137         reloadSettings();
 138
 139         if(url.isEmpty() and listen_port == 0) {
 140                 disconnect_action->setEnabled(false);
 141                 showConnectDialog();
 142         } else {
 143                 connectToHost(url, quality, listen_port, view_only);
 144         }
 145 }
 146
 147 void MainWindow::grabZoomKeys(bool grab)
 148 {
 149 #ifdef Q_WS_MAEMO_5
 150         unsigned long val = (grab)?1:0;
 151         Atom atom = XInternAtom(QX11Info::display(), "_HILDON_ZOOM_KEY_ATOM", False);
 152         if(!atom) {
 153                 qWarning("Couldn't get zoom key atom");
 154                 return;
 155         }
 156         XChangeProperty(QX11Info::display(), winId(), atom, XA_INTEGER,
 157                 32, PropModeReplace, reinterpret_cast<unsigned char *>(&val), 1);
 158 #endif
 159 }
 160
 161 void MainWindow::closeEvent(QCloseEvent*) {
 162         grabZoomKeys(false);
 163
 164         QSettings settings;
 165         settings.setValue("show_toolbar", show_toolbar->isChecked());
 166         settings.setValue("zoomlevel", zoom_slider->value());
 167         settings.sync();
 168
 169         hide();
 170
 171         disconnectFromHost();
 172 }
 173
 174 void MainWindow::about() {
 175         QMessageBox::about(this, tr("About Presence VNC"),
 176                 tr("<center><h1>Presence VNC 0.8</h1>\
 177 <p>A touchscreen friendly VNC client</p>\
 178 <p><a href=\"http://presencevnc.garage.maemo.org/\">http://presencevnc.garage.maemo.org/</a></p></center>\
 179 <small><p>&copy;2010 Christian Pulvermacher &lt;pulvermacher@gmx.de&gt;<br />\
 180 Based on KRDC, &copy; 2007-2008 Urs Wolfer<br />\
 181 and LibVNCServer, &copy; 2001-2003 Johannes E. Schindelin</p>\
 182 <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>"));
 183 }
 184
 185 void MainWindow::showConnectDialog()
 186 {
 187         ConnectDialog *connect_dialog = new ConnectDialog(this);
 188         connect(connect_dialog, SIGNAL(connectToHost(QString, int, int, bool)),
 189                 this, SLOT(connectToHost(QString, int, int, bool)));
 190         connect_dialog->exec();
 191         //ConnectDialog cleans up after itself
 192 }
 193
 194 void MainWindow::connectToHost(QString url, int quality, int listen_port, bool view_only)
 195 {
 196         disconnectFromHost();
 197
 198         vnc_view = new VncView(this, url, RemoteView::Quality(quality), listen_port);
 199         vnc_view->setViewOnly(view_only);
 200
 201         connect(vnc_view, SIGNAL(statusChanged(RemoteView::RemoteStatus)),
 202                 this, SLOT(statusChanged(RemoteView::RemoteStatus)));
 203         scroll_area->setWidget(vnc_view);
 204         vnc_view->start();
 205
 206         disconnect_action->setEnabled(true);
 207
 208         //reset key menu
 209         delete key_menu;
 210         key_menu = new KeyMenu(this);
 211 }
 212
 213 void MainWindow::disconnectFromHost()
 214 {
 215         if(!vnc_view)
 216                 return;
 217
 218         disconnect_action->setEnabled(false);
 219         toolbar->setEnabled(false);
 220         scroll_area->setWidget(0);
 221
 222         delete vnc_view;
 223         vnc_view = 0;
 224 }
 225
 226 void MainWindow::statusChanged(RemoteView::RemoteStatus status)
 227 {
 228         static RemoteView::RemoteStatus old_status = RemoteView::Disconnected;
 229
 230         switch(status) {
 231         case RemoteView::Connecting:
 232 #ifdef Q_WS_MAEMO_5
 233                 setAttribute(Qt::WA_Maemo5ShowProgressIndicator, true);
 234 #endif
 235                 break;
 236         case RemoteView::Connected:
 237 #ifdef Q_WS_MAEMO_5
 238                 setAttribute(Qt::WA_Maemo5ShowProgressIndicator, false);
 239 #endif
 240                 toolbar->setEnabled(true);
 241
 242                 //disable key input buttons in view only mode
 243                 input_toolbuttons->setEnabled(!vnc_view->viewOnly());
 244
 245                 vnc_view->setZoomLevel(zoom_slider->value());
 246                 vnc_view->useFastTransformations(false);
 247                 vnc_view->repaint();
 248                 break;
 249         case RemoteView::Disconnecting:
 250                 if(old_status == RemoteView::Disconnected) //Disconnecting also occurs while connecting, so check last state
 251                         break;
 252
 253                 if(disconnect_action->isEnabled()) //don't show when manually disconnecting
 254                         scroll_area->showMessage(tr("Connection lost"));
 255
 256                 //clean up
 257                 scroll_area->setWidget(0);
 258                 vnc_view = 0;
 259                 disconnect_action->setEnabled(false);
 260                 toolbar->setEnabled(false);
 261
 262                 //exit fullscreen mode
 263                 if(windowState() & Qt::WindowFullScreen)
 264                         setWindowState(windowState() ^ Qt::WindowFullScreen);
 265                 break;
 266         case RemoteView::Disconnected:
 267 #ifdef Q_WS_MAEMO_5
 268                 setAttribute(Qt::WA_Maemo5ShowProgressIndicator, false);
 269 #endif
 270                 if(old_status == RemoteView::Disconnecting) {
 271                         scroll_area->setWidget(0); //remove widget
 272                 }
 273                 break;
 274         default: //avoid compiler warnings
 275                 break;
 276         }
 277
 278         old_status = status;
 279 }
 280
 281 //updates available screen space for current zoom level
 282 //necessary when rotating, showing fullscreen, etc.
 283 void MainWindow::updateScreenSpace()
 284 {
 285         if(vnc_view) {
 286                 vnc_view->setZoomLevel();
 287         }
 288 }
 289
 290 void MainWindow::updateScreenSpaceDelayed()
 291 {
 292         QTimer::singleShot(500, this, SLOT(updateScreenSpace()));
 293 }
 294
 295 void MainWindow::toggleFullscreen()
 296 {
 297         bool in_fullscreen = windowState() & Qt::WindowFullScreen;
 298
 299         //hide menu/toolbar in fullscreen (new state is !in_fullscreen)
 300         toolbar->setVisible(show_toolbar->isChecked() and in_fullscreen);
 301
 302 #ifndef Q_WS_MAEMO_5
 303         //menu bar is invisible by default on maemo
 304         menuBar()->setVisible(in_fullscreen);
 305 #endif
 306
 307         setWindowState(windowState() ^ Qt::WindowFullScreen);
 308         updateScreenSpaceDelayed();
 309 }
 310
 311 void MainWindow::showKeyMenu()
 312 {
 313         key_menu->exec();
 314         vnc_view->sendKeySequence(key_menu->getKeySequence());
 315 }
 316
 317 void MainWindow::showPreferences()
 318 {
 319         Preferences *p = new Preferences(this);
 320         p->exec();
 321         delete p;
 322
 323         reloadSettings();
 324 }
 325
 326 void MainWindow::reloadSettings()
 327 {
 328         QSettings settings;
 329         zoom_to_cursor = settings.value("zoom_to_cursor", true).toBool();
 330
 331 #ifdef Q_WS_MAEMO_5
 332         int rotation = settings.value("screen_rotation", 0).toInt();
 333         setAttribute(Qt::WA_Maemo5AutoOrientation, rotation == 0);
 334         setAttribute(Qt::WA_Maemo5LandscapeOrientation, rotation == 1);
 335         setAttribute(Qt::WA_Maemo5PortraitOrientation, rotation == 2);
 336 #endif
 337
 338         if(vnc_view)
 339                 vnc_view->reloadSettings();
 340 }
 341
 342 void MainWindow::resizeEvent(QResizeEvent *event)
 343 {
 344         QMainWindow::resizeEvent(event);
 345
 346         updateScreenSpace();
 347         if(vnc_view)
 348                 vnc_view->setZoomLevel(zoom_slider->value());
 349
 350 #ifdef Q_WS_MAEMO_5
 351         //hide zoom slider in portrait mode
 352         zoom_slider->setVisible(height() < width());
 353 #endif
 354 }
 355
 356 void MainWindow::showInputPanel()
 357 {
 358 #ifdef Q_WS_MAEMO_5
 359         //TODO: when hardware keyboard is open, this will only cause the IM to mess up 'real' key events
 360         vnc_view->setAttribute(Qt::WA_InputMethodEnabled, true);
 361         vnc_view->setInputMethodHints(Qt::ImhNoAutoUppercase); //without this, IM starts with caps lock
 362
 363         QEvent event(QEvent::RequestSoftwareInputPanel);
 364         QApplication::sendEvent(vnc_view, &event);
 365 #endif
 366 }
 367
 368 void MainWindow::setZoomLevel(int level)
 369 {
 370         if(!vnc_view)
 371                 return;
 372
 373         const qreal old_factor = vnc_view->zoomFactor();
 374         QPoint center = vnc_view->visibleRegion().boundingRect().center();
 375
 376         vnc_view->setZoomLevel(level);
 377
 378         const qreal new_factor = vnc_view->zoomFactor();
 379
 380         //scroll to center, if zoom level actually changed
 381         if(old_factor != new_factor) {
 382                 if(zoom_to_cursor)
 383                         center = new_factor * vnc_view->cursorPosition();
 384                 else //zoom to center of visible region
 385                         center = center * (double(new_factor)/old_factor);
 386
 387                 scroll_area->ensureVisible(center.x(), center.y(),
 388                         vnc_view->visibleRegion().boundingRect().width()/2,
 389                         vnc_view->visibleRegion().boundingRect().height()/2);
 390
 391                 vnc_view->useFastTransformations(zoom_slider->isSliderDown());
 392                 vnc_view->update();
 393
 394                 scroll_area->showMessage(tr("Zoom: %1\%").arg(qRound(100*new_factor)));
 395         }
 396 }
 397
 398 void MainWindow::zoomSliderReleased()
 399 {
 400         static QTime time;
 401         if(!time.isNull() and time.elapsed() < 500) //double clicked
 402                 zoom_slider->setValue(95); //100%
 403
 404         time.restart();
 405
 406         //stopped zooming, reenable high quality
 407         vnc_view->useFastTransformations(false);
 408 }
 409
 410 void MainWindow::displayStateChanged(QString state)
 411 {
 412     const bool display_on = (state != "off");
 413     if(vnc_view)
 414         vnc_view->setDisplayOff(!display_on);
 415 }
 416
 417 void MainWindow::sendTab() { vnc_view->sendKey(Qt::Key_Tab); }
 418 void MainWindow::sendEsc() { vnc_view->sendKey(Qt::Key_Escape); }
 419 void MainWindow::sendPgUp() { vnc_view->sendKey(Qt::Key_PageUp); }
 420 void MainWindow::sendPgDn() { vnc_view->sendKey(Qt::Key_PageDown); }
 421 void MainWindow::sendReturn() { vnc_view->sendKey(Qt::Key_Return); }