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 #include <QtMaemo5>
  27 #include <QX11Info>
  28
  29 #include <X11/Xlib.h>
  30 #include <X11/Xatom.h>
  31
  32 #include <iostream>
  33
  34 MainWindow::MainWindow(QString url, int quality):
  35         QMainWindow(0),
  36         vnc_view(0),
  37         scroll_area(new ScrollArea(0))
  38 {
  39         setWindowTitle("Presence VNC");
  40         setAttribute(Qt::WA_Maemo5StackedWindow);
  41
  42         migrateConfiguration();
  43
  44         QSettings settings;
  45
  46         //set up toolbar
  47         toolbar = new QToolBar(0);
  48         toolbar->addAction(QChar(0x2026), this, SLOT(showKeyMenu())); //"..." button
  49         toolbar->addAction(tr("Tab"), this, SLOT(sendTab()));
  50         toolbar->addAction(tr("Esc"), this, SLOT(sendEsc()));
  51         toolbar->addAction(tr("PgUp"), this, SLOT(sendPgUp()));
  52         toolbar->addAction(tr("PgDn"), this, SLOT(sendPgDn()));
  53         toolbar->addAction(QIcon("/usr/share/icons/hicolor/48x48/hildon/chat_enter.png"), "", this, SLOT(sendReturn()));
  54         toolbar->addAction(QIcon("/usr/share/icons/hicolor/48x48/hildon/control_keyboard.png"), "", this, SLOT(showInputPanel()));
  55
  56         //move fullscreen button to the right
  57         QWidget *spacer = new QWidget();
  58         spacer->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
  59         toolbar->addWidget(spacer);
  60
  61         toolbar->addAction(QIcon("/usr/share/icons/hicolor/48x48/hildon/general_fullsize.png"), "", this, SLOT(toggleFullscreen()));
  62         addToolBar(toolbar);
  63         toolbar->setVisible(settings.value("show_toolbar", true).toBool());
  64
  65         //set up menu
  66         QMenuBar *menu = new QMenuBar(this);
  67         QAction *connect_action = new QAction(tr("Connect"), this);
  68         disconnect_action = new QAction(tr("Disconnect"), this);
  69         menu->addAction(connect_action);
  70         menu->addAction(disconnect_action);
  71         scaling = new QAction(tr("Fit to Screen"), this);
  72         scaling->setCheckable(true);
  73         scaling->setChecked(settings.value("rescale", true).toBool());
  74         menu->addAction(scaling);
  75         show_toolbar = new QAction(tr("Show Toolbar"), this);
  76         show_toolbar->setCheckable(true);
  77         show_toolbar->setChecked(settings.value("show_toolbar", true).toBool());
  78         menu->addAction(show_toolbar);
  79         QAction *pref_action = new QAction(tr("Preferences"), this);
  80         menu->addAction(pref_action);
  81         QAction *about_action = new QAction(tr("About"), this);
  82         menu->addAction(about_action);
  83
  84         connect(about_action, SIGNAL(triggered()),
  85                 this, SLOT(about()));
  86         connect(pref_action, SIGNAL(triggered()),
  87                 this, SLOT(showPreferences()));
  88         connect(connect_action, SIGNAL(triggered()),
  89                 this, SLOT(showConnectDialog()));
  90         connect(disconnect_action, SIGNAL(triggered()),
  91                 this, SLOT(disconnectFromHost()));
  92         connect(show_toolbar, SIGNAL(toggled(bool)),
  93                 toolbar, SLOT(setVisible(bool)));
  94         connect(show_toolbar, SIGNAL(toggled(bool)),
  95                 this, SLOT(forceResizeDelayed()));
  96
  97         setCentralWidget(scroll_area);
  98         new FullScreenExitButton(this);
  99
 100         grabZoomKeys(true);
 101         reloadSettings();
 102
 103         connect(QApplication::desktop(), SIGNAL(resized(int)),
 104                 this, SLOT(forceResize()));
 105
 106         if(url.isNull()) {
 107                 disconnect_action->setEnabled(false);
 108                 toolbar->setEnabled(false);
 109                 showConnectDialog();
 110         } else {
 111                 vnc_view = new VncView(this, url, RemoteView::Quality(quality));
 112                 connect(scaling, SIGNAL(toggled(bool)),
 113                         vnc_view, SLOT(enableScaling(bool)));
 114                 connect(vnc_view, SIGNAL(statusChanged(RemoteView::RemoteStatus)),
 115                         this, SLOT(statusChanged(RemoteView::RemoteStatus)));
 116                 scroll_area->setWidget(vnc_view);
 117                 vnc_view->start();
 118                 vnc_view->enableScaling(scaling->isChecked());
 119         }
 120 }
 121
 122 void MainWindow::grabZoomKeys(bool grab)
 123 {
 124         unsigned long val = (grab)?1:0;
 125         Atom atom = XInternAtom(QX11Info::display(), "_HILDON_ZOOM_KEY_ATOM", False);
 126         if(!atom) {
 127                 qWarning("Couldn't get zoom key atom");
 128                 return;
 129         }
 130         XChangeProperty(QX11Info::display(), winId(), atom, XA_INTEGER,
 131                 32, PropModeReplace, reinterpret_cast<unsigned char *>(&val), 1);
 132 }
 133
 134 void MainWindow::closeEvent(QCloseEvent*) {
 135         grabZoomKeys(false);
 136
 137         QSettings settings;
 138         settings.setValue("show_toolbar", show_toolbar->isChecked());
 139         settings.setValue("rescale", scaling->isChecked());
 140         settings.sync();
 141
 142         hide();
 143
 144         disconnectFromHost();
 145 }
 146
 147 void MainWindow::about() {
 148         QMessageBox::about(this, tr("About Presence VNC"),
 149                 tr("<center><h1>Presence VNC 0.5</h1>\
 150 <p>A touchscreen friendly VNC client</p>\
 151 <p><a href=\"https://garage.maemo.org/projects/presencevnc/\">https://garage.maemo.org/projects/presencevnc</a></p></center>\
 152 <small><p>&copy;2010 Christian Pulvermacher &lt;pulvermacher@gmx.de&gt;</p>\
 153 <p>Based on KRDC, &copy; 2007-2008 Urs Wolfer</p>\
 154 <p>and LibVNCServer, &copy; 2001-2003 Johannes E. Schindelin</p>\
 155 <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>"));
 156 }
 157
 158 void MainWindow::showConnectDialog()
 159 {
 160         ConnectDialog *connect_dialog = new ConnectDialog(this);
 161         connect(connect_dialog, SIGNAL(connectToHost(QString)),
 162                 this, SLOT(connectToHost(QString)));
 163         connect_dialog->exec();
 164 }
 165
 166 void MainWindow::connectToHost(QString url)
 167 {
 168         disconnectFromHost();
 169
 170         vnc_view = new VncView(this, url, RemoteView::Quality(2));
 171
 172         connect(scaling, SIGNAL(toggled(bool)),
 173                 vnc_view, SLOT(enableScaling(bool)));
 174         connect(vnc_view, SIGNAL(statusChanged(RemoteView::RemoteStatus)),
 175                 this, SLOT(statusChanged(RemoteView::RemoteStatus)));
 176         scroll_area->setWidget(vnc_view);
 177         vnc_view->start();
 178         vnc_view->enableScaling(scaling->isChecked());
 179         disconnect_action->setEnabled(true);
 180         toolbar->setEnabled(true);
 181 }
 182
 183 void MainWindow::disconnectFromHost()
 184 {
 185         if(!vnc_view)
 186                 return;
 187
 188         scroll_area->setWidget(0);
 189
 190         vnc_view->disconnect(); //remove all signal-slot connections
 191         delete vnc_view;
 192         vnc_view = 0;
 193         disconnect_action->setEnabled(false);
 194         toolbar->setEnabled(false);
 195 }
 196
 197 void MainWindow::statusChanged(RemoteView::RemoteStatus status)
 198 {
 199         static RemoteView::RemoteStatus old_status = RemoteView::Disconnected;
 200
 201         switch(status) {
 202         case RemoteView::Connecting:
 203                 setAttribute(Qt::WA_Maemo5ShowProgressIndicator, true);
 204                 break;
 205         case RemoteView::Connected:
 206                 setAttribute(Qt::WA_Maemo5ShowProgressIndicator, false);
 207                 if(!scaling->isChecked()) {
 208                         //ugly hack to force a refresh (forceFullRepaint() doesn't repaint?? -> vnc_view hidden???)
 209                         vnc_view->resize(scroll_area->size());
 210                         vnc_view->enableScaling(false);
 211                 }
 212                 break;
 213         case RemoteView::Disconnecting:
 214                 if(old_status != RemoteView::Disconnected) { //Disconnecting also occurs while connecting, so check last state
 215                         QMaemo5InformationBox::information(this, tr("Connection lost"));
 216
 217                         //clean up
 218                         scroll_area->setWidget(0);
 219                         vnc_view = 0;
 220                         disconnect_action->setEnabled(false);
 221                         toolbar->setEnabled(false);
 222
 223                         //exit fullscreen mode
 224                         if(windowState() & Qt::WindowFullScreen)
 225                                 setWindowState(windowState() ^ Qt::WindowFullScreen);
 226                 }
 227                 break;
 228         case RemoteView::Disconnected:
 229                 setAttribute(Qt::WA_Maemo5ShowProgressIndicator, false);
 230                 if(old_status == RemoteView::Disconnecting) {
 231                         scroll_area->setWidget(0); //remove widget
 232                 }
 233                 break;
 234         }
 235
 236         old_status = status;
 237 }
 238
 239 //when rescaling is enabled, this resizes the widget to use available screen space
 240 //necessary when rotating, showing fullscreen, etc.
 241 void MainWindow::forceResize()
 242 {
 243         if(vnc_view and scaling->isChecked()) {
 244                 vnc_view->resize(scroll_area->size());
 245         }
 246 }
 247
 248 void MainWindow::forceResizeDelayed()
 249 {
 250         QTimer::singleShot(500, this, SLOT(forceResize()));
 251 }
 252
 253 void MainWindow::toggleFullscreen()
 254 {
 255         toolbar->setVisible(show_toolbar->isChecked() and (windowState() & Qt::WindowFullScreen)); //hide toolbar in fullscreen
 256         setWindowState(windowState() ^ Qt::WindowFullScreen);
 257         forceResizeDelayed();
 258 }
 259
 260 void MainWindow::showKeyMenu()
 261 {
 262         static KeyMenu *key_menu = new KeyMenu(this);
 263         key_menu->exec();
 264
 265         vnc_view->sendKeySequence(key_menu->getKeySequence());
 266 }
 267
 268 void MainWindow::showPreferences()
 269 {
 270         Preferences *p = new Preferences(this);
 271         p->exec();
 272         delete p;
 273
 274         reloadSettings();
 275 }
 276
 277 void MainWindow::reloadSettings()
 278 {
 279         QSettings settings;
 280         int rotation = settings.value("screen_rotation", 0).toInt();
 281         setAttribute(Qt::WA_Maemo5AutoOrientation, rotation == 0);
 282         setAttribute(Qt::WA_Maemo5LandscapeOrientation, rotation == 1);
 283         setAttribute(Qt::WA_Maemo5PortraitOrientation, rotation == 2);
 284
 285         if(vnc_view)
 286                 vnc_view->reloadSettings();
 287 }
 288
 289 void MainWindow::showInputPanel()
 290 {
 291         vnc_view->setAttribute(Qt::WA_InputMethodEnabled, true);
 292         QEvent event(QEvent::RequestSoftwareInputPanel);
 293         QApplication::sendEvent(vnc_view, &event);
 294 }