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 "mainwindow.h"
  21 #include "preferences.h"
  22 #include "vncview.h"
  23
  24 #include <QtMaemo5>
  25 #include <QX11Info>
  26
  27 #include <X11/Xlib.h>
  28 #include <X11/Xatom.h>
  29
  30 #include <iostream>
  31
  32 MainWindow::MainWindow(QString url, int quality):
  33         QMainWindow(0),
  34         vnc_view(0),
  35         scroll_area(new QScrollArea(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("Mod", this, SLOT(showModifierMenu()));
  47         toolbar->addAction("Tab", this, SLOT(sendTab()));
  48         toolbar->addAction("Esc", this, SLOT(sendEsc()));
  49         toolbar->addAction("PgUp", this, SLOT(sendPgUp()));
  50         toolbar->addAction("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         toolbar->addAction(QIcon("/usr/share/icons/hicolor/48x48/hildon/general_fullsize.png"), "", this, SLOT(toggleFullscreen()));
  54         addToolBar(toolbar);
  55         toolbar->setVisible(settings.value("show_toolbar", true).toBool());
  56
  57         //set up menu
  58         QMenuBar *menu = new QMenuBar(this);
  59         QAction *connect_action = new QAction("Connect", this);
  60         disconnect_action = new QAction("Disconnect", this);
  61         menu->addAction(connect_action);
  62         menu->addAction(disconnect_action);
  63         scaling = new QAction("Fit to Screen", this);
  64         scaling->setCheckable(true);
  65         scaling->setChecked(settings.value("rescale", true).toBool());
  66         menu->addAction(scaling);
  67         QAction *show_toolbar = new QAction("Show Toolbar", this);
  68         show_toolbar->setCheckable(true);
  69         show_toolbar->setChecked(settings.value("show_toolbar", true).toBool());
  70         menu->addAction(show_toolbar);
  71         QAction *pref_action = new QAction("Preferences", this);
  72         menu->addAction(pref_action);
  73         QAction *about_action = new QAction("About", this);
  74         menu->addAction(about_action);
  75
  76         //menu->setAttribute(Qt::WA_Maemo5StackedWindow);
  77         //menu->hide();
  78
  79         connect(about_action, SIGNAL(triggered()),
  80                 this, SLOT(about()));
  81         connect(pref_action, SIGNAL(triggered()),
  82                 this, SLOT(showPreferences()));
  83         connect(connect_action, SIGNAL(triggered()),
  84                 this, SLOT(showConnectDialog()));
  85         connect(disconnect_action, SIGNAL(triggered()),
  86                 this, SLOT(disconnectFromHost()));
  87         connect(show_toolbar, SIGNAL(toggled(bool)),
  88                 toolbar, SLOT(setVisible(bool)));
  89         connect(show_toolbar, SIGNAL(toggled(bool)),
  90                 this, SLOT(forceResizeDelayed()));
  91
  92         setCentralWidget(scroll_area);
  93
  94         grabZoomKeys(true);
  95         reloadSettings();
  96
  97         connect(QApplication::desktop(), SIGNAL(resized(int)),
  98                 this, SLOT(forceResize()));
  99
 100         if(url.isNull()) {
 101                 disconnect_action->setEnabled(false);
 102                 toolbar->setEnabled(false);
 103                 showConnectDialog();
 104         } else {
 105                 vnc_view = new VncView(this, url, RemoteView::Quality(quality));
 106                 connect(scaling, SIGNAL(toggled(bool)),
 107                         vnc_view, SLOT(enableScaling(bool)));
 108                 connect(vnc_view, SIGNAL(statusChanged(RemoteView::RemoteStatus)),
 109                         this, SLOT(statusChanged(RemoteView::RemoteStatus)));
 110                 scroll_area->setWidget(vnc_view);
 111                 vnc_view->start();
 112                 vnc_view->enableScaling(scaling->isChecked());
 113         }
 114 }
 115
 116 void MainWindow::grabZoomKeys(bool grab)
 117 {
 118         unsigned long val = (grab)?1:0;
 119         Atom atom = XInternAtom(QX11Info::display(), "_HILDON_ZOOM_KEY_ATOM", False);
 120         if(!atom) {
 121                 qWarning("Couldn't get zoom key atom");
 122                 return;
 123         }
 124         XChangeProperty(QX11Info::display(), winId(), atom, XA_INTEGER,
 125                 32, PropModeReplace, reinterpret_cast<unsigned char *>(&val), 1);
 126 }
 127
 128 void MainWindow::closeEvent(QCloseEvent*) {
 129         grabZoomKeys(false);
 130
 131         QSettings settings;
 132         settings.setValue("show_toolbar", toolbar->isVisible());
 133         settings.setValue("rescale", scaling->isChecked());
 134         settings.sync();
 135
 136         hide();
 137
 138         disconnectFromHost();
 139 }
 140
 141 void MainWindow::about() {
 142         QMessageBox::about(this, tr("About Presence VNC"),
 143                 tr("<center><h1>Presence VNC 0.4</h1>\
 144 A touchscreen friendly VNC client\
 145 <small><p>&copy;2010 Christian Pulvermacher &lt;pulvermacher@gmx.de&gt;</p>\
 146 <p>Based on KRDC, &copy; 2007-2008 Urs Wolfer</p>\
 147 <p>and LibVNCServer, &copy; 2001-2003 Johannes E. Schindelin</p></small></center>\
 148 <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>"));
 149 }
 150
 151 void MainWindow::showConnectDialog()
 152 {
 153         /*
 154         QSettings settings;
 155         QString url = QInputDialog::getText(this, "Connect to Host", "VNC Server:", QLineEdit::Normal, settings.value("last_hostname", "").toString());
 156         if(url.isEmpty()) { //dialog dismissed or nothing entered
 157                 return;
 158         }
 159         */
 160
 161         ConnectDialog *connect_dialog = new ConnectDialog(this);
 162         if(!connect_dialog->exec()) { //dialog rejected
 163                 delete connect_dialog;
 164                 return;
 165         }
 166
 167         QString url = connect_dialog->getUrl();
 168         delete connect_dialog;
 169
 170         disconnectFromHost();
 171
 172         vnc_view = new VncView(this, url, RemoteView::Quality(2)); //TODO: get quality in dialog
 173
 174         connect(scaling, SIGNAL(toggled(bool)),
 175                 vnc_view, SLOT(enableScaling(bool)));
 176         connect(vnc_view, SIGNAL(statusChanged(RemoteView::RemoteStatus)),
 177                 this, SLOT(statusChanged(RemoteView::RemoteStatus)));
 178         scroll_area->setWidget(vnc_view);
 179         vnc_view->start();
 180         vnc_view->enableScaling(scaling->isChecked());
 181         disconnect_action->setEnabled(true);
 182         toolbar->setEnabled(true);
 183 }
 184
 185 void MainWindow::disconnectFromHost()
 186 {
 187         if(!vnc_view)
 188                 return;
 189
 190         scroll_area->setWidget(0);
 191
 192         vnc_view->disconnect(); //remove all signal-slot connections
 193         delete vnc_view;
 194         vnc_view = 0;
 195         disconnect_action->setEnabled(false);
 196         toolbar->setEnabled(false);
 197 }
 198
 199 void MainWindow::statusChanged(RemoteView::RemoteStatus status)
 200 {
 201         static RemoteView::RemoteStatus old_status = RemoteView::Disconnected;
 202
 203         switch(status) {
 204         case RemoteView::Connecting:
 205                 setAttribute(Qt::WA_Maemo5ShowProgressIndicator, true);
 206                 break;
 207         case RemoteView::Connected:
 208                 setAttribute(Qt::WA_Maemo5ShowProgressIndicator, false);
 209                 if(!scaling->isChecked()) {
 210                         //if remote desktop is shown in full size, 2nd connection will have black screen
 211                         //ugly hack to force a refresh (forceFullRepaint() doesn't repaint?? -> vnc_view hidden???)
 212                         vnc_view->resize(scroll_area->size());
 213                         vnc_view->enableScaling(false);
 214                 }
 215                 break;
 216         case RemoteView::Disconnecting:
 217                 if(old_status != RemoteView::Disconnected) { //Disconnecting also occurs while connecting, so check last state
 218                         QMaemo5InformationBox::information(this, "Connection lost");
 219
 220                         //clean up
 221                         scroll_area->setWidget(0);
 222                         vnc_view = 0;
 223                         disconnect_action->setEnabled(false);
 224                         toolbar->setEnabled(false);
 225
 226                         //exit fullscreen mode
 227                         if(windowState() & Qt::WindowFullScreen)
 228                                 setWindowState(windowState() ^ Qt::WindowFullScreen);
 229                 }
 230                 break;
 231         case RemoteView::Disconnected:
 232                 setAttribute(Qt::WA_Maemo5ShowProgressIndicator, false);
 233                 if(old_status == RemoteView::Disconnecting) {
 234                         scroll_area->setWidget(0); //remove widget
 235                 }
 236                 break;
 237         }
 238
 239         old_status = status;
 240 }
 241
 242 //when rescaling is enabled, this resizes the widget to use available screen space
 243 //necessary when rotating, showing fullscreen, etc.
 244 void MainWindow::forceResize()
 245 {
 246         if(vnc_view and scaling->isChecked()) {
 247                 vnc_view->resize(scroll_area->size());
 248         }
 249 }
 250
 251 void MainWindow::forceResizeDelayed()
 252 {
 253         QTimer::singleShot(500, this, SLOT(forceResize()));
 254 }
 255
 256 void MainWindow::toggleFullscreen()
 257 {
 258         setWindowState(windowState() ^ Qt::WindowFullScreen);
 259         forceResizeDelayed();
 260 }
 261
 262 void MainWindow::showModifierMenu()
 263 {
 264         static QMenu *mod_menu = new QMenu(tr("Modifiers"), this);
 265         static QAction *win = mod_menu->addAction(tr("Win"));
 266         static QAction *alt = mod_menu->addAction(tr("Alt"));
 267         win->setCheckable(true);
 268         alt->setCheckable(true);
 269
 270         //show menu at top-left corner of toolbar
 271         QAction *chosen = mod_menu->exec(toolbar->mapToGlobal(QPoint(0,0)));
 272         if(!chosen) {
 273                 return;
 274         } else if(chosen == alt) {
 275                 vnc_view->sendKey(Qt::Key_Alt);
 276         } else if(chosen == win) {
 277                 vnc_view->sendKey(Qt::Key_Meta);
 278         } else {
 279                 std::cout << "unhandled action?\n";
 280         }
 281 }
 282
 283 void MainWindow::showPreferences()
 284 {
 285         Preferences *p = new Preferences(this);
 286         p->exec();
 287         delete p;
 288
 289         reloadSettings();
 290 }
 291
 292 void MainWindow::reloadSettings()
 293 {
 294         QSettings settings;
 295         int rotation = settings.value("screen_rotation", 0).toInt();
 296         setAttribute(Qt::WA_Maemo5AutoOrientation, rotation == 0);
 297         setAttribute(Qt::WA_Maemo5LandscapeOrientation, rotation == 1);
 298         setAttribute(Qt::WA_Maemo5PortraitOrientation, rotation == 2);
 299
 300         if(vnc_view)
 301                 vnc_view->reloadSettings();
 302 }
 303
 304 void MainWindow::showInputPanel()
 305 {
 306         vnc_view->setAttribute(Qt::WA_InputMethodEnabled, true);
 307         QEvent event(QEvent::RequestSoftwareInputPanel);
 308         QApplication::sendEvent(vnc_view, &event);
 309 }