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
  32 MainWindow::MainWindow(QString url, int quality):
  33         QMainWindow(0),
  34         vnc_view(0),
  35         scroll_area(new ScrollArea(0))
  36 {
  37         setWindowTitle("Presence VNC");
  38         setAttribute(Qt::WA_Maemo5StackedWindow);
  39
  40         migrateConfiguration();
  41
  42         QSettings settings;
  43
  44         //set up toolbar
  45         toolbar = new QToolBar(0);
  46         toolbar->addAction(tr("Mod"), this, SLOT(showModifierMenu()));
  47         toolbar->addAction(tr("Tab"), this, SLOT(sendTab()));
  48         toolbar->addAction(tr("Esc"), this, SLOT(sendEsc()));
  49         toolbar->addAction(tr("PgUp"), this, SLOT(sendPgUp()));
  50         toolbar->addAction(tr("PgDn"), this, SLOT(sendPgDn()));
  51         toolbar->addAction(QIcon("/usr/share/icons/hicolor/48x48/hildon/chat_enter.png"), "", this, SLOT(sendReturn()));
  52         toolbar->addAction(QIcon("/usr/share/icons/hicolor/48x48/hildon/control_keyboard.png"), "", this, SLOT(showInputPanel()));
  53
  54         //move fullscreen button to the right
  55         QWidget *spacer = new QWidget();
  56         spacer->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
  57         toolbar->addWidget(spacer);
  58
  59         toolbar->addAction(QIcon("/usr/share/icons/hicolor/48x48/hildon/general_fullsize.png"), "", this, SLOT(toggleFullscreen()));
  60         addToolBar(toolbar);
  61         toolbar->setVisible(settings.value("show_toolbar", true).toBool());
  62
  63         //set up menu
  64         QMenuBar *menu = new QMenuBar(this);
  65         QAction *connect_action = new QAction(tr("Connect"), this);
  66         disconnect_action = new QAction(tr("Disconnect"), this);
  67         menu->addAction(connect_action);
  68         menu->addAction(disconnect_action);
  69         scaling = new QAction(tr("Fit to Screen"), this);
  70         scaling->setCheckable(true);
  71         scaling->setChecked(settings.value("rescale", true).toBool());
  72         menu->addAction(scaling);
  73         show_toolbar = new QAction(tr("Show Toolbar"), this);
  74         show_toolbar->setCheckable(true);
  75         show_toolbar->setChecked(settings.value("show_toolbar", true).toBool());
  76         menu->addAction(show_toolbar);
  77         QAction *pref_action = new QAction(tr("Preferences"), this);
  78         menu->addAction(pref_action);
  79         QAction *about_action = new QAction(tr("About"), this);
  80         menu->addAction(about_action);
  81
  82         connect(about_action, SIGNAL(triggered()),
  83                 this, SLOT(about()));
  84         connect(pref_action, SIGNAL(triggered()),
  85                 this, SLOT(showPreferences()));
  86         connect(connect_action, SIGNAL(triggered()),
  87                 this, SLOT(showConnectDialog()));
  88         connect(disconnect_action, SIGNAL(triggered()),
  89                 this, SLOT(disconnectFromHost()));
  90         connect(show_toolbar, SIGNAL(toggled(bool)),
  91                 toolbar, SLOT(setVisible(bool)));
  92         connect(show_toolbar, SIGNAL(toggled(bool)),
  93                 this, SLOT(forceResizeDelayed()));
  94
  95         setCentralWidget(scroll_area);
  96         new FullScreenExitButton(this);
  97
  98         grabZoomKeys(true);
  99         reloadSettings();
 100
 101         connect(QApplication::desktop(), SIGNAL(resized(int)),
 102                 this, SLOT(forceResize()));
 103
 104         if(url.isNull()) {
 105                 disconnect_action->setEnabled(false);
 106                 toolbar->setEnabled(false);
 107                 showConnectDialog();
 108         } else {
 109                 vnc_view = new VncView(this, url, RemoteView::Quality(quality));
 110                 connect(scaling, SIGNAL(toggled(bool)),
 111                         vnc_view, SLOT(enableScaling(bool)));
 112                 connect(vnc_view, SIGNAL(statusChanged(RemoteView::RemoteStatus)),
 113                         this, SLOT(statusChanged(RemoteView::RemoteStatus)));
 114                 scroll_area->setWidget(vnc_view);
 115                 vnc_view->start();
 116                 vnc_view->enableScaling(scaling->isChecked());
 117         }
 118 }
 119
 120 void MainWindow::grabZoomKeys(bool grab)
 121 {
 122         unsigned long val = (grab)?1:0;
 123         Atom atom = XInternAtom(QX11Info::display(), "_HILDON_ZOOM_KEY_ATOM", False);
 124         if(!atom) {
 125                 qWarning("Couldn't get zoom key atom");
 126                 return;
 127         }
 128         XChangeProperty(QX11Info::display(), winId(), atom, XA_INTEGER,
 129                 32, PropModeReplace, reinterpret_cast<unsigned char *>(&val), 1);
 130 }
 131
 132 void MainWindow::closeEvent(QCloseEvent*) {
 133         grabZoomKeys(false);
 134
 135         QSettings settings;
 136         settings.setValue("show_toolbar", show_toolbar->isChecked());
 137         settings.setValue("rescale", scaling->isChecked());
 138         settings.sync();
 139
 140         hide();
 141
 142         disconnectFromHost();
 143 }
 144
 145 void MainWindow::about() {
 146         QMessageBox::about(this, tr("About Presence VNC"),
 147                 tr("<center><h1>Presence VNC 0.4</h1>\
 148 A touchscreen friendly VNC client\
 149 <a href=\"https://garage.maemo.org/projects/presencevnc/\">https://garage.maemo.org/projects/presencevnc</a></center>\
 150 <small><p>&copy;2010 Christian Pulvermacher &lt;pulvermacher@gmx.de&gt;</p>\
 151 <p>Based on KRDC, &copy; 2007-2008 Urs Wolfer</p>\
 152 <p>and LibVNCServer, &copy; 2001-2003 Johannes E. Schindelin</p>\
 153 <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>"));
 154 }
 155
 156 void MainWindow::showConnectDialog()
 157 {
 158         ConnectDialog *connect_dialog = new ConnectDialog(this);
 159         connect(connect_dialog, SIGNAL(connectToHost(QString)),
 160                 this, SLOT(connectToHost(QString)));
 161         connect_dialog->exec();
 162 }
 163
 164 void MainWindow::connectToHost(QString url)
 165 {
 166         disconnectFromHost();
 167
 168         vnc_view = new VncView(this, url, RemoteView::Quality(2));
 169
 170         connect(scaling, SIGNAL(toggled(bool)),
 171                 vnc_view, SLOT(enableScaling(bool)));
 172         connect(vnc_view, SIGNAL(statusChanged(RemoteView::RemoteStatus)),
 173                 this, SLOT(statusChanged(RemoteView::RemoteStatus)));
 174         scroll_area->setWidget(vnc_view);
 175         vnc_view->start();
 176         vnc_view->enableScaling(scaling->isChecked());
 177         disconnect_action->setEnabled(true);
 178         toolbar->setEnabled(true);
 179 }
 180
 181 void MainWindow::disconnectFromHost()
 182 {
 183         if(!vnc_view)
 184                 return;
 185
 186         scroll_area->setWidget(0);
 187
 188         vnc_view->disconnect(); //remove all signal-slot connections
 189         delete vnc_view;
 190         vnc_view = 0;
 191         disconnect_action->setEnabled(false);
 192         toolbar->setEnabled(false);
 193 }
 194
 195 void MainWindow::statusChanged(RemoteView::RemoteStatus status)
 196 {
 197         static RemoteView::RemoteStatus old_status = RemoteView::Disconnected;
 198
 199         switch(status) {
 200         case RemoteView::Connecting:
 201                 setAttribute(Qt::WA_Maemo5ShowProgressIndicator, true);
 202                 break;
 203         case RemoteView::Connected:
 204                 setAttribute(Qt::WA_Maemo5ShowProgressIndicator, false);
 205                 if(!scaling->isChecked()) {
 206                         //ugly hack to force a refresh (forceFullRepaint() doesn't repaint?? -> vnc_view hidden???)
 207                         vnc_view->resize(scroll_area->size());
 208                         vnc_view->enableScaling(false);
 209                 }
 210                 break;
 211         case RemoteView::Disconnecting:
 212                 if(old_status != RemoteView::Disconnected) { //Disconnecting also occurs while connecting, so check last state
 213                         QMaemo5InformationBox::information(this, tr("Connection lost"));
 214
 215                         //clean up
 216                         scroll_area->setWidget(0);
 217                         vnc_view = 0;
 218                         disconnect_action->setEnabled(false);
 219                         toolbar->setEnabled(false);
 220
 221                         //exit fullscreen mode
 222                         if(windowState() & Qt::WindowFullScreen)
 223                                 setWindowState(windowState() ^ Qt::WindowFullScreen);
 224                 }
 225                 break;
 226         case RemoteView::Disconnected:
 227                 setAttribute(Qt::WA_Maemo5ShowProgressIndicator, false);
 228                 if(old_status == RemoteView::Disconnecting) {
 229                         scroll_area->setWidget(0); //remove widget
 230                 }
 231                 break;
 232         }
 233
 234         old_status = status;
 235 }
 236
 237 //when rescaling is enabled, this resizes the widget to use available screen space
 238 //necessary when rotating, showing fullscreen, etc.
 239 void MainWindow::forceResize()
 240 {
 241         if(vnc_view and scaling->isChecked()) {
 242                 vnc_view->resize(scroll_area->size());
 243         }
 244 }
 245
 246 void MainWindow::forceResizeDelayed()
 247 {
 248         QTimer::singleShot(500, this, SLOT(forceResize()));
 249 }
 250
 251 void MainWindow::toggleFullscreen()
 252 {
 253         toolbar->setVisible(show_toolbar->isChecked() and (windowState() & Qt::WindowFullScreen)); //hide toolbar in fullscreen
 254         setWindowState(windowState() ^ Qt::WindowFullScreen);
 255         forceResizeDelayed();
 256 }
 257
 258 void MainWindow::showModifierMenu()
 259 {
 260         static QMenu *mod_menu = new QMenu(tr("Modifiers"), this);
 261         static QAction *win = mod_menu->addAction(tr("Win"));
 262         static QAction *alt = mod_menu->addAction(tr("Alt"));
 263         win->setCheckable(true);
 264         alt->setCheckable(true);
 265
 266         //show menu at top-left corner of toolbar
 267         QAction *chosen = mod_menu->exec(toolbar->mapToGlobal(QPoint(0,0)));
 268         if(!chosen) {
 269                 return;
 270         } else if(chosen == alt) {
 271                 vnc_view->sendKey(Qt::Key_Alt);
 272         } else if(chosen == win) {
 273                 vnc_view->sendKey(Qt::Key_Meta);
 274         }
 275 }
 276
 277 void MainWindow::showPreferences()
 278 {
 279         Preferences *p = new Preferences(this);
 280         p->exec();
 281         delete p;
 282
 283         reloadSettings();
 284 }
 285
 286 void MainWindow::reloadSettings()
 287 {
 288         QSettings settings;
 289         int rotation = settings.value("screen_rotation", 0).toInt();
 290         setAttribute(Qt::WA_Maemo5AutoOrientation, rotation == 0);
 291         setAttribute(Qt::WA_Maemo5LandscapeOrientation, rotation == 1);
 292         setAttribute(Qt::WA_Maemo5PortraitOrientation, rotation == 2);
 293
 294         if(vnc_view)
 295                 vnc_view->reloadSettings();
 296 }
 297
 298 void MainWindow::showInputPanel()
 299 {
 300         vnc_view->setAttribute(Qt::WA_InputMethodEnabled, true);
 301         QEvent event(QEvent::RequestSoftwareInputPanel);
 302         QApplication::sendEvent(vnc_view, &event);
 303 }