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         zoom_slider->setValue(settings.value("zoomlevel", 95).toInt());
  73         toolbar->addWidget(zoom_slider);
  74
  75         toolbar->addAction(QIcon("/usr/share/icons/hicolor/48x48/hildon/general_fullsize.png"), "", this, SLOT(toggleFullscreen()));
  76         addToolBar(toolbar);
  77         toolbar->setVisible(settings.value("show_toolbar", true).toBool());
  78
  79         //set up menu
  80         QAction *connect_action = new QAction(tr("Connect"), this);
  81         disconnect_action = new QAction(tr("Disconnect"), this);
  82         show_toolbar = new QAction(tr("Show Toolbar"), this);
  83         show_toolbar->setCheckable(true);
  84         show_toolbar->setChecked(settings.value("show_toolbar", true).toBool());
  85         QAction *pref_action = new QAction(tr("Preferences"), this);
  86         QAction *about_action = new QAction(tr("About"), this);
  87
  88 #ifdef Q_WS_MAEMO_5
  89         menuBar()->addAction(connect_action);
  90         menuBar()->addAction(disconnect_action);
  91         menuBar()->addAction(show_toolbar);
  92         menuBar()->addAction(pref_action);
  93         menuBar()->addAction(about_action);
  94 #else
  95         QMenu* session_menu = menuBar()->addMenu(tr("&Session"));
  96         session_menu->addAction(connect_action);
  97         session_menu->addAction(disconnect_action);
  98         session_menu->addSeparator();
  99         session_menu->addAction(pref_action);
 100         session_menu->addSeparator();
 101         session_menu->addAction(tr("&Quit"), this, SLOT(close()));
 102
 103         QMenu* view_menu = menuBar()->addMenu(tr("&View"));
 104         view_menu->addAction(show_toolbar);
 105
 106         QMenu* help_menu = menuBar()->addMenu(tr("&Help"));
 107         help_menu->addAction(about_action);
 108 #endif
 109
 110         connect(about_action, SIGNAL(triggered()),
 111                 this, SLOT(about()));
 112         connect(pref_action, SIGNAL(triggered()),
 113                 this, SLOT(showPreferences()));
 114         connect(connect_action, SIGNAL(triggered()),
 115                 this, SLOT(showConnectDialog()));
 116         connect(disconnect_action, SIGNAL(triggered()),
 117                 this, SLOT(disconnectFromHost()));
 118         connect(show_toolbar, SIGNAL(toggled(bool)),
 119                 toolbar, SLOT(setVisible(bool)));
 120         connect(show_toolbar, SIGNAL(toggled(bool)),
 121                 this, SLOT(forceResizeDelayed()));
 122
 123         setCentralWidget(scroll_area);
 124         new FullScreenExitButton(this);
 125
 126         grabZoomKeys(true);
 127         reloadSettings();
 128
 129         if(url.isNull()) {
 130                 disconnect_action->setEnabled(false);
 131                 toolbar->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 0.6</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         toolbar->setEnabled(true);
 201
 202         //reset key menu
 203         delete key_menu;
 204         key_menu = new KeyMenu(this);
 205 }
 206
 207 void MainWindow::disconnectFromHost()
 208 {
 209         if(!vnc_view)
 210                 return;
 211
 212         scroll_area->setWidget(0);
 213
 214         delete vnc_view;
 215         vnc_view = 0;
 216         disconnect_action->setEnabled(false);
 217         toolbar->setEnabled(false);
 218 }
 219
 220 void MainWindow::statusChanged(RemoteView::RemoteStatus status)
 221 {
 222         static RemoteView::RemoteStatus old_status = RemoteView::Disconnected;
 223
 224         switch(status) {
 225         case RemoteView::Connecting:
 226 #ifdef Q_WS_MAEMO_5
 227                 setAttribute(Qt::WA_Maemo5ShowProgressIndicator, true);
 228 #endif
 229                 break;
 230         case RemoteView::Connected:
 231 #ifdef Q_WS_MAEMO_5
 232                 setAttribute(Qt::WA_Maemo5ShowProgressIndicator, false);
 233 #endif
 234                 vnc_view->setZoomLevel(zoom_slider->value());
 235                 vnc_view->forceFullRepaint();
 236                 break;
 237         case RemoteView::Disconnecting:
 238                 if(old_status != RemoteView::Disconnected) { //Disconnecting also occurs while connecting, so check last state
 239 #ifdef Q_WS_MAEMO_5
 240                         QMaemo5InformationBox::information(this, tr("Connection lost"));
 241 #endif
 242
 243                         //clean up
 244                         scroll_area->setWidget(0);
 245                         vnc_view = 0;
 246                         disconnect_action->setEnabled(false);
 247                         toolbar->setEnabled(false);
 248
 249                         //exit fullscreen mode
 250                         if(windowState() & Qt::WindowFullScreen)
 251                                 setWindowState(windowState() ^ Qt::WindowFullScreen);
 252                 }
 253                 break;
 254         case RemoteView::Disconnected:
 255 #ifdef Q_WS_MAEMO_5
 256                 setAttribute(Qt::WA_Maemo5ShowProgressIndicator, false);
 257 #endif
 258                 if(old_status == RemoteView::Disconnecting) {
 259                         scroll_area->setWidget(0); //remove widget
 260                 }
 261                 break;
 262         default: //avoid compiler warnings
 263                 break;
 264         }
 265
 266         old_status = status;
 267 }
 268
 269 //resizes the widget to use available screen space
 270 //necessary when rotating, showing fullscreen, etc.
 271 void MainWindow::forceResize()
 272 {
 273         if(vnc_view) {
 274                 vnc_view->resize(scroll_area->size());
 275         }
 276 }
 277
 278 void MainWindow::forceResizeDelayed()
 279 {
 280         QTimer::singleShot(500, this, SLOT(forceResize()));
 281 }
 282
 283 void MainWindow::toggleFullscreen()
 284 {
 285         bool in_fullscreen = windowState() & Qt::WindowFullScreen;
 286
 287         //hide menu/toolbar in fullscreen (new state is !in_fullscreen)
 288         toolbar->setVisible(show_toolbar->isChecked() and in_fullscreen);
 289
 290 #ifndef Q_WS_MAEMO_5
 291         //menu bar is invisible by default on maemo
 292         menuBar()->setVisible(in_fullscreen);
 293 #endif
 294
 295         setWindowState(windowState() ^ Qt::WindowFullScreen);
 296         forceResizeDelayed();
 297 }
 298
 299 void MainWindow::showKeyMenu()
 300 {
 301         key_menu->exec();
 302         vnc_view->sendKeySequence(key_menu->getKeySequence());
 303 }
 304
 305 void MainWindow::showPreferences()
 306 {
 307         Preferences *p = new Preferences(this);
 308         p->exec();
 309         delete p;
 310
 311         reloadSettings();
 312 }
 313
 314 void MainWindow::reloadSettings()
 315 {
 316         QSettings settings;
 317 #ifdef Q_WS_MAEMO_5
 318         int rotation = settings.value("screen_rotation", 0).toInt();
 319         setAttribute(Qt::WA_Maemo5AutoOrientation, rotation == 0);
 320         setAttribute(Qt::WA_Maemo5LandscapeOrientation, rotation == 1);
 321         setAttribute(Qt::WA_Maemo5PortraitOrientation, rotation == 2);
 322 #endif
 323
 324         if(vnc_view)
 325                 vnc_view->reloadSettings();
 326 }
 327
 328 void MainWindow::resizeEvent(QResizeEvent *event)
 329 {
 330         QMainWindow::resizeEvent(event);
 331
 332         forceResize();
 333         if(vnc_view)
 334                 vnc_view->setZoomLevel(zoom_slider->value());
 335
 336 #ifdef Q_WS_MAEMO_5
 337         //hide zoom slider in portrait mode
 338         zoom_slider->setVisible(height() < width());
 339 #endif
 340 }
 341
 342 void MainWindow::showInputPanel()
 343 {
 344 #ifdef Q_WS_MAEMO_5
 345         //TODO: when hardware keyboard is open, this will only cause the IM to mess up 'real' key events
 346         vnc_view->setAttribute(Qt::WA_InputMethodEnabled, true);
 347         vnc_view->setInputMethodHints(Qt::ImhNoAutoUppercase); //without this, IM starts with caps lock
 348
 349         QEvent event(QEvent::RequestSoftwareInputPanel);
 350         QApplication::sendEvent(vnc_view, &event);
 351 #endif
 352 }
 353
 354 void MainWindow::setZoomLevel(int level)
 355 {
 356         if(!vnc_view)
 357                 return;
 358
 359         int old_width = vnc_view->width();
 360         QPoint center = vnc_view->visibleRegion().boundingRect().center();
 361
 362         vnc_view->setZoomLevel(level);
 363
 364         int new_width = vnc_view->width();
 365         center = center * (double(new_width)/old_width);
 366
 367         //scroll to center
 368         scroll_area->ensureVisible(center.x(), center.y(),
 369                 scroll_area->width()/2, scroll_area->height()/2);
 370 }