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 "mainwindow.h"
  22 #include "preferences.h"
  23 #include "vncview.h"
  24
  25 #include <QtMaemo5>
  26 #include <QX11Info>
  27
  28 #include <X11/Xlib.h>
  29 #include <X11/Xatom.h>
  30
  31 #include <iostream>
  32
  33 MainWindow::MainWindow(QString url, int quality):
  34         QMainWindow(0),
  35         vnc_view(0),
  36         scroll_area(new ScrollArea(0))
  37 {
  38         setWindowTitle("Presence VNC");
  39         setAttribute(Qt::WA_Maemo5StackedWindow);
  40
  41         migrateConfiguration();
  42
  43         QSettings settings;
  44
  45         //set up toolbar
  46         toolbar = new QToolBar(0);
  47         toolbar->addAction("Mod", this, SLOT(showModifierMenu()));
  48         toolbar->addAction("Tab", this, SLOT(sendTab()));
  49         toolbar->addAction("Esc", this, SLOT(sendEsc()));
  50         toolbar->addAction("PgUp", this, SLOT(sendPgUp()));
  51         toolbar->addAction("PgDn", this, SLOT(sendPgDn()));
  52         toolbar->addAction(QIcon("/usr/share/icons/hicolor/48x48/hildon/chat_enter.png"), "", this, SLOT(sendReturn()));
  53         toolbar->addAction(QIcon("/usr/share/icons/hicolor/48x48/hildon/control_keyboard.png"), "", this, SLOT(showInputPanel()));
  54
  55         //move fullscreen button to the right
  56         QWidget *spacer = new QWidget();
  57         spacer->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
  58         toolbar->addWidget(spacer);
  59
  60         toolbar->addAction(QIcon("/usr/share/icons/hicolor/48x48/hildon/general_fullsize.png"), "", this, SLOT(toggleFullscreen()));
  61         addToolBar(toolbar);
  62         toolbar->setVisible(settings.value("show_toolbar", true).toBool());
  63
  64         //set up menu
  65         QMenuBar *menu = new QMenuBar(this);
  66         QAction *connect_action = new QAction(tr("Connect"), this);
  67         disconnect_action = new QAction(tr("Disconnect"), this);
  68         menu->addAction(connect_action);
  69         menu->addAction(disconnect_action);
  70         scaling = new QAction(tr("Fit to Screen"), this);
  71         scaling->setCheckable(true);
  72         scaling->setChecked(settings.value("rescale", true).toBool());
  73         menu->addAction(scaling);
  74         show_toolbar = new QAction(tr("Show Toolbar"), this);
  75         show_toolbar->setCheckable(true);
  76         show_toolbar->setChecked(settings.value("show_toolbar", true).toBool());
  77         menu->addAction(show_toolbar);
  78         QAction *pref_action = new QAction(tr("Preferences"), this);
  79         menu->addAction(pref_action);
  80         QAction *about_action = new QAction(tr("About"), this);
  81         menu->addAction(about_action);
  82
  83         connect(about_action, SIGNAL(triggered()),
  84                 this, SLOT(about()));
  85         connect(pref_action, SIGNAL(triggered()),
  86                 this, SLOT(showPreferences()));
  87         connect(connect_action, SIGNAL(triggered()),
  88                 this, SLOT(showConnectDialog()));
  89         connect(disconnect_action, SIGNAL(triggered()),
  90                 this, SLOT(disconnectFromHost()));
  91         connect(show_toolbar, SIGNAL(toggled(bool)),
  92                 toolbar, SLOT(setVisible(bool)));
  93         connect(show_toolbar, SIGNAL(toggled(bool)),
  94                 this, SLOT(forceResizeDelayed()));
  95
  96         setCentralWidget(scroll_area);
  97         new FullScreenExitButton(this);
  98
  99         grabZoomKeys(true);
 100         reloadSettings();
 101
 102         connect(QApplication::desktop(), SIGNAL(resized(int)),
 103                 this, SLOT(forceResize()));
 104
 105         if(url.isNull()) {
 106                 disconnect_action->setEnabled(false);
 107                 toolbar->setEnabled(false);
 108                 showConnectDialog();
 109         } else {
 110                 vnc_view = new VncView(this, url, RemoteView::Quality(quality));
 111                 connect(scaling, SIGNAL(toggled(bool)),
 112                         vnc_view, SLOT(enableScaling(bool)));
 113                 connect(vnc_view, SIGNAL(statusChanged(RemoteView::RemoteStatus)),
 114                         this, SLOT(statusChanged(RemoteView::RemoteStatus)));
 115                 scroll_area->setWidget(vnc_view);
 116                 vnc_view->start();
 117                 vnc_view->enableScaling(scaling->isChecked());
 118         }
 119 }
 120
 121 void MainWindow::grabZoomKeys(bool grab)
 122 {
 123         unsigned long val = (grab)?1:0;
 124         Atom atom = XInternAtom(QX11Info::display(), "_HILDON_ZOOM_KEY_ATOM", False);
 125         if(!atom) {
 126                 qWarning("Couldn't get zoom key atom");
 127                 return;
 128         }
 129         XChangeProperty(QX11Info::display(), winId(), atom, XA_INTEGER,
 130                 32, PropModeReplace, reinterpret_cast<unsigned char *>(&val), 1);
 131 }
 132
 133 void MainWindow::closeEvent(QCloseEvent*) {
 134         grabZoomKeys(false);
 135
 136         QSettings settings;
 137         settings.setValue("show_toolbar", show_toolbar->isChecked());
 138         settings.setValue("rescale", scaling->isChecked());
 139         settings.sync();
 140
 141         hide();
 142
 143         disconnectFromHost();
 144 }
 145
 146 void MainWindow::about() {
 147         QMessageBox::about(this, tr("About Presence VNC"),
 148                 tr("<center><h1>Presence VNC 0.4</h1>\
 149 A touchscreen friendly VNC client\
 150 <a href=\"https://garage.maemo.org/projects/presencevnc/\">https://garage.maemo.org/projects/presencevnc</a></center>\
 151 <small><p>&copy;2010 Christian Pulvermacher &lt;pulvermacher@gmx.de&gt;</p>\
 152 <p>Based on KRDC, &copy; 2007-2008 Urs Wolfer</p>\
 153 <p>and LibVNCServer, &copy; 2001-2003 Johannes E. Schindelin</p>\
 154 <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>"));
 155 }
 156
 157 void MainWindow::showConnectDialog()
 158 {
 159         ConnectDialog *connect_dialog = new ConnectDialog(this);
 160         connect(connect_dialog, SIGNAL(connectToHost(QString)),
 161                 this, SLOT(connectToHost(QString)));
 162         connect_dialog->exec();
 163 }
 164
 165 void MainWindow::connectToHost(QString url)
 166 {
 167         disconnectFromHost();
 168
 169         vnc_view = new VncView(this, url, RemoteView::Quality(2)); //TODO: get quality in dialog
 170
 171         connect(scaling, SIGNAL(toggled(bool)),
 172                 vnc_view, SLOT(enableScaling(bool)));
 173         connect(vnc_view, SIGNAL(statusChanged(RemoteView::RemoteStatus)),
 174                 this, SLOT(statusChanged(RemoteView::RemoteStatus)));
 175         scroll_area->setWidget(vnc_view);
 176         vnc_view->start();
 177         vnc_view->enableScaling(scaling->isChecked());
 178         disconnect_action->setEnabled(true);
 179         toolbar->setEnabled(true);
 180 }
 181
 182 void MainWindow::disconnectFromHost()
 183 {
 184         if(!vnc_view)
 185                 return;
 186
 187         scroll_area->setWidget(0);
 188
 189         vnc_view->disconnect(); //remove all signal-slot connections
 190         delete vnc_view;
 191         vnc_view = 0;
 192         disconnect_action->setEnabled(false);
 193         toolbar->setEnabled(false);
 194 }
 195
 196 void MainWindow::statusChanged(RemoteView::RemoteStatus status)
 197 {
 198         static RemoteView::RemoteStatus old_status = RemoteView::Disconnected;
 199
 200         switch(status) {
 201         case RemoteView::Connecting:
 202                 setAttribute(Qt::WA_Maemo5ShowProgressIndicator, true);
 203                 break;
 204         case RemoteView::Connected:
 205                 setAttribute(Qt::WA_Maemo5ShowProgressIndicator, false);
 206                 if(!scaling->isChecked()) {
 207                         //if remote desktop is shown in full size, 2nd connection will have black screen
 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::showModifierMenu()
 261 {
 262         static QMenu *mod_menu = new QMenu(tr("Modifiers"), this);
 263         static QAction *win = mod_menu->addAction(tr("Win"));
 264         static QAction *alt = mod_menu->addAction(tr("Alt"));
 265         win->setCheckable(true);
 266         alt->setCheckable(true);
 267
 268         //show menu at top-left corner of toolbar
 269         QAction *chosen = mod_menu->exec(toolbar->mapToGlobal(QPoint(0,0)));
 270         if(!chosen) {
 271                 return;
 272         } else if(chosen == alt) {
 273                 vnc_view->sendKey(Qt::Key_Alt);
 274         } else if(chosen == win) {
 275                 vnc_view->sendKey(Qt::Key_Meta);
 276         } else {
 277                 std::cout << "unhandled action?\n";
 278         }
 279 }
 280
 281 void MainWindow::showPreferences()
 282 {
 283         Preferences *p = new Preferences(this);
 284         p->exec();
 285         delete p;
 286
 287         reloadSettings();
 288 }
 289
 290 void MainWindow::reloadSettings()
 291 {
 292         QSettings settings;
 293         int rotation = settings.value("screen_rotation", 0).toInt();
 294         setAttribute(Qt::WA_Maemo5AutoOrientation, rotation == 0);
 295         setAttribute(Qt::WA_Maemo5LandscapeOrientation, rotation == 1);
 296         setAttribute(Qt::WA_Maemo5PortraitOrientation, rotation == 2);
 297
 298         if(vnc_view)
 299                 vnc_view->reloadSettings();
 300 }
 301
 302 void MainWindow::showInputPanel()
 303 {
 304         vnc_view->setAttribute(Qt::WA_InputMethodEnabled, true);
 305         QEvent event(QEvent::RequestSoftwareInputPanel);
 306         QApplication::sendEvent(vnc_view, &event);
 307 }