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, int listen_port, 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(0)
  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() and listen_port == 0) {
 132                 disconnect_action->setEnabled(false);
 133                 showConnectDialog();
 134         } else {
 135                 connectToHost(url, quality, listen_port, view_only);
 136         }
 137 }
 138
 139 void MainWindow::grabZoomKeys(bool grab)
 140 {
 141 #ifdef Q_WS_MAEMO_5
 142         unsigned long val = (grab)?1:0;
 143         Atom atom = XInternAtom(QX11Info::display(), "_HILDON_ZOOM_KEY_ATOM", False);
 144         if(!atom) {
 145                 qWarning("Couldn't get zoom key atom");
 146                 return;
 147         }
 148         XChangeProperty(QX11Info::display(), winId(), atom, XA_INTEGER,
 149                 32, PropModeReplace, reinterpret_cast<unsigned char *>(&val), 1);
 150 #endif
 151 }
 152
 153 void MainWindow::closeEvent(QCloseEvent*) {
 154         grabZoomKeys(false);
 155
 156         QSettings settings;
 157         settings.setValue("show_toolbar", show_toolbar->isChecked());
 158         settings.setValue("zoomlevel", zoom_slider->value());
 159         settings.sync();
 160
 161         hide();
 162
 163         disconnectFromHost();
 164 }
 165
 166 void MainWindow::about() {
 167         QMessageBox::about(this, tr("About Presence VNC"),
 168                 tr("<center><h1>Presence VNC 0.8</h1>\
 169 <p>A touchscreen friendly VNC client</p>\
 170 <p><a href=\"http://presencevnc.garage.maemo.org/\">http://presencevnc.garage.maemo.org/</a></p></center>\
 171 <small><p>&copy;2010 Christian Pulvermacher &lt;pulvermacher@gmx.de&gt;<br />\
 172 Based on KRDC, &copy; 2007-2008 Urs Wolfer<br />\
 173 and LibVNCServer, &copy; 2001-2003 Johannes E. Schindelin</p>\
 174 <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>"));
 175 }
 176
 177 void MainWindow::showConnectDialog()
 178 {
 179         ConnectDialog *connect_dialog = new ConnectDialog(this);
 180         connect(connect_dialog, SIGNAL(connectToHost(QString, int, int, bool)),
 181                 this, SLOT(connectToHost(QString, int, int, bool)));
 182         connect_dialog->exec();
 183         //ConnectDialog cleans up after itself
 184 }
 185
 186 void MainWindow::connectToHost(QString url, int quality, int listen_port, bool view_only)
 187 {
 188         disconnectFromHost();
 189
 190         vnc_view = new VncView(this, url, RemoteView::Quality(quality), listen_port);
 191         vnc_view->setViewOnly(view_only);
 192
 193         connect(vnc_view, SIGNAL(statusChanged(RemoteView::RemoteStatus)),
 194                 this, SLOT(statusChanged(RemoteView::RemoteStatus)));
 195         scroll_area->setWidget(vnc_view);
 196         vnc_view->start();
 197
 198         disconnect_action->setEnabled(true);
 199
 200         //reset key menu
 201         delete key_menu;
 202         key_menu = new KeyMenu(this);
 203 }
 204
 205 void MainWindow::disconnectFromHost()
 206 {
 207         if(!vnc_view)
 208                 return;
 209
 210         disconnect_action->setEnabled(false);
 211         toolbar->setEnabled(false);
 212         scroll_area->setWidget(0);
 213
 214         delete vnc_view;
 215         vnc_view = 0;
 216 }
 217
 218 void MainWindow::statusChanged(RemoteView::RemoteStatus status)
 219 {
 220         static RemoteView::RemoteStatus old_status = RemoteView::Disconnected;
 221
 222         switch(status) {
 223         case RemoteView::Connecting:
 224 #ifdef Q_WS_MAEMO_5
 225                 setAttribute(Qt::WA_Maemo5ShowProgressIndicator, true);
 226 #endif
 227                 break;
 228         case RemoteView::Connected:
 229 #ifdef Q_WS_MAEMO_5
 230                 setAttribute(Qt::WA_Maemo5ShowProgressIndicator, false);
 231 #endif
 232                 toolbar->setEnabled(true);
 233
 234                 //disable key input buttons in view only mode
 235                 input_toolbuttons->setEnabled(!vnc_view->viewOnly());
 236
 237                 vnc_view->setZoomLevel(zoom_slider->value());
 238                 vnc_view->useFastTransformations(false);
 239                 vnc_view->repaint();
 240                 break;
 241         case RemoteView::Disconnecting:
 242                 if(old_status == RemoteView::Disconnected) //Disconnecting also occurs while connecting, so check last state
 243                         break;
 244
 245                 if(disconnect_action->isEnabled()) //don't show when manually disconnecting
 246                         scroll_area->showMessage(tr("Connection lost"));
 247
 248                 //clean up
 249                 scroll_area->setWidget(0);
 250                 vnc_view = 0;
 251                 disconnect_action->setEnabled(false);
 252                 toolbar->setEnabled(false);
 253
 254                 //exit fullscreen mode
 255                 if(windowState() & Qt::WindowFullScreen)
 256                         setWindowState(windowState() ^ Qt::WindowFullScreen);
 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 //updates available screen space for current zoom level
 274 //necessary when rotating, showing fullscreen, etc.
 275 void MainWindow::updateScreenSpace()
 276 {
 277         if(vnc_view) {
 278                 vnc_view->setZoomLevel();
 279         }
 280 }
 281
 282 void MainWindow::updateScreenSpaceDelayed()
 283 {
 284         QTimer::singleShot(500, this, SLOT(updateScreenSpace()));
 285 }
 286
 287 void MainWindow::toggleFullscreen()
 288 {
 289         bool in_fullscreen = windowState() & Qt::WindowFullScreen;
 290
 291         //hide menu/toolbar in fullscreen (new state is !in_fullscreen)
 292         toolbar->setVisible(show_toolbar->isChecked() and in_fullscreen);
 293
 294 #ifndef Q_WS_MAEMO_5
 295         //menu bar is invisible by default on maemo
 296         menuBar()->setVisible(in_fullscreen);
 297 #endif
 298
 299         setWindowState(windowState() ^ Qt::WindowFullScreen);
 300         updateScreenSpaceDelayed();
 301 }
 302
 303 void MainWindow::showKeyMenu()
 304 {
 305         key_menu->exec();
 306         vnc_view->sendKeySequence(key_menu->getKeySequence());
 307 }
 308
 309 void MainWindow::showPreferences()
 310 {
 311         Preferences *p = new Preferences(this);
 312         p->exec();
 313         delete p;
 314
 315         reloadSettings();
 316 }
 317
 318 void MainWindow::reloadSettings()
 319 {
 320         QSettings settings;
 321         zoom_to_cursor = settings.value("zoom_to_cursor", true).toBool();
 322
 323 #ifdef Q_WS_MAEMO_5
 324         int rotation = settings.value("screen_rotation", 0).toInt();
 325         setAttribute(Qt::WA_Maemo5AutoOrientation, rotation == 0);
 326         setAttribute(Qt::WA_Maemo5LandscapeOrientation, rotation == 1);
 327         setAttribute(Qt::WA_Maemo5PortraitOrientation, rotation == 2);
 328 #endif
 329
 330         if(vnc_view)
 331                 vnc_view->reloadSettings();
 332 }
 333
 334 void MainWindow::resizeEvent(QResizeEvent *event)
 335 {
 336         QMainWindow::resizeEvent(event);
 337
 338         updateScreenSpace();
 339         if(vnc_view)
 340                 vnc_view->setZoomLevel(zoom_slider->value());
 341
 342 #ifdef Q_WS_MAEMO_5
 343         //hide zoom slider in portrait mode
 344         zoom_slider->setVisible(height() < width());
 345 #endif
 346 }
 347
 348 void MainWindow::showInputPanel()
 349 {
 350 #ifdef Q_WS_MAEMO_5
 351         //TODO: when hardware keyboard is open, this will only cause the IM to mess up 'real' key events
 352         vnc_view->setAttribute(Qt::WA_InputMethodEnabled, true);
 353         vnc_view->setInputMethodHints(Qt::ImhNoAutoUppercase); //without this, IM starts with caps lock
 354
 355         QEvent event(QEvent::RequestSoftwareInputPanel);
 356         QApplication::sendEvent(vnc_view, &event);
 357 #endif
 358 }
 359
 360 void MainWindow::setZoomLevel(int level)
 361 {
 362         if(!vnc_view)
 363                 return;
 364
 365         const qreal old_factor = vnc_view->zoomFactor();
 366         QPoint center = vnc_view->visibleRegion().boundingRect().center();
 367
 368         vnc_view->setZoomLevel(level);
 369
 370         const qreal new_factor = vnc_view->zoomFactor();
 371
 372         //scroll to center, if zoom level actually changed
 373         if(old_factor != new_factor) {
 374                 if(zoom_to_cursor)
 375                         center = new_factor * vnc_view->cursorPosition();
 376                 else //zoom to center of visible region
 377                         center = center * (double(new_factor)/old_factor);
 378
 379                 scroll_area->ensureVisible(center.x(), center.y(),
 380                         vnc_view->visibleRegion().boundingRect().width()/2,
 381                         vnc_view->visibleRegion().boundingRect().height()/2);
 382
 383                 vnc_view->useFastTransformations(zoom_slider->isSliderDown());
 384                 vnc_view->update();
 385
 386                 scroll_area->showMessage(tr("Zoom: %1\%").arg(qRound(100*new_factor)));
 387         }
 388 }
 389
 390 void MainWindow::zoomSliderReleased()
 391 {
 392         static QTime time;
 393         if(!time.isNull() and time.elapsed() < 500) //double clicked
 394                 zoom_slider->setValue(95); //100%
 395
 396         time.restart();
 397
 398         //stopped zooming, reenable high quality
 399         vnc_view->useFastTransformations(false);
 400 }
 401
 402 void MainWindow::sendTab() { vnc_view->sendKey(Qt::Key_Tab); }
 403 void MainWindow::sendEsc() { vnc_view->sendKey(Qt::Key_Escape); }
 404 void MainWindow::sendPgUp() { vnc_view->sendKey(Qt::Key_PageUp); }
 405 void MainWindow::sendPgDn() { vnc_view->sendKey(Qt::Key_PageDown); }
 406 void MainWindow::sendReturn() { vnc_view->sendKey(Qt::Key_Return); }