git.maemo.org Git - presencevnc/blob - src/mainwindow.cpp

   1 #include "mainwindow.h"
   2 #include "preferences.h"
   3 #include "vncview.h"
   4
   5 #include <QtMaemo5>
   6 #include <QX11Info>
   7
   8 #include <X11/Xlib.h>
   9 #include <X11/Xatom.h>
  10
  11 #include <iostream>
  12
  13 MainWindow::MainWindow(QString url, int quality):
  14         QMainWindow(0),
  15         vnc_view(0),
  16         scroll_area(new QScrollArea(0))
  17 {
  18         setWindowTitle("Presence VNC");
  19         setAttribute(Qt::WA_Maemo5StackedWindow);
  20         QSettings settings;
  21
  22         //set up toolbar
  23         toolbar = new QToolBar(0);
  24         //toolbar->setAttribute(Qt::WA_InputMethodEnabled, true);
  25         toolbar->addAction("Mod", this, SLOT(showModifierMenu()));
  26         toolbar->addAction("Tab", this, SLOT(sendTab()));
  27         toolbar->addAction("Esc", this, SLOT(sendEsc()));
  28         toolbar->addAction("PgUp", this, SLOT(sendPgUp()));
  29         toolbar->addAction("PgDn", this, SLOT(sendPgDn()));
  30 //      toolbar->addAction("IM", toolbar, SLOT(setFocus())); //doesn't work
  31         toolbar->addAction(QIcon("/usr/share/icons/hicolor/48x48/hildon/general_fullsize.png"), "", this, SLOT(toggleFullscreen()));
  32         addToolBar(toolbar);
  33         toolbar->setVisible(settings.value("show_toolbar", true).toBool());
  34
  35         //set up menu
  36         QMenuBar *menu = new QMenuBar(this);
  37         QAction *connect_action = new QAction("Connect", this);
  38         disconnect_action = new QAction("Disconnect", this);
  39 //      menu->addAction(connect_action);
  40 //      menu->addAction(disconnect_action);
  41         scaling = new QAction("Fit to Screen", this);
  42         scaling->setCheckable(true);
  43         scaling->setChecked(settings.value("rescale", true).toBool());
  44         menu->addAction(scaling);
  45         QAction *show_toolbar = new QAction("Show Toolbar", this);
  46         show_toolbar->setCheckable(true);
  47         show_toolbar->setChecked(settings.value("show_toolbar", true).toBool());
  48         menu->addAction(show_toolbar);
  49         QAction *pref_action = new QAction("Preferences", this);
  50         menu->addAction(pref_action);
  51         QAction *about_action = new QAction("About", this);
  52         menu->addAction(about_action);
  53
  54         //menu->setAttribute(Qt::WA_Maemo5StackedWindow);
  55         //menu->hide();
  56
  57         connect(about_action, SIGNAL(triggered()),
  58                 this, SLOT(about()));
  59         connect(pref_action, SIGNAL(triggered()),
  60                 this, SLOT(showPreferences()));
  61         connect(connect_action, SIGNAL(triggered()),
  62                 this, SLOT(connectDialog()));
  63         connect(disconnect_action, SIGNAL(triggered()),
  64                 this, SLOT(disconnectFromHost()));
  65         connect(show_toolbar, SIGNAL(toggled(bool)),
  66                 toolbar, SLOT(setVisible(bool)));
  67         connect(show_toolbar, SIGNAL(toggled(bool)),
  68                 this, SLOT(forceResizeDelayed()));
  69
  70         setCentralWidget(scroll_area);
  71
  72         grabZoomKeys(true);
  73         reloadSettings();
  74
  75         connect(QApplication::desktop(), SIGNAL(resized(int)),
  76                 this, SLOT(forceResize()));
  77
  78         if(url.isNull()) {
  79                 disconnect_action->setEnabled(false);
  80                 toolbar->setEnabled(false);
  81                 connectDialog();
  82         } else {
  83                 vnc_view = new VncView(this, url, RemoteView::Quality(quality));
  84                 connect(scaling, SIGNAL(toggled(bool)),
  85                         vnc_view, SLOT(enableScaling(bool)));
  86                 connect(vnc_view, SIGNAL(statusChanged(RemoteView::RemoteStatus)),
  87                         this, SLOT(statusChanged(RemoteView::RemoteStatus)));
  88                 scroll_area->setWidget(vnc_view);
  89                 vnc_view->start();
  90                 vnc_view->enableScaling(scaling->isChecked());
  91         }
  92
  93         if(!vnc_view) //not connected
  94                 QTimer::singleShot(100, this, SLOT(close()));
  95 }
  96
  97 void MainWindow::grabZoomKeys(bool grab)
  98 {
  99         unsigned long val = (grab)?1:0;
 100         Atom atom = XInternAtom(QX11Info::display(), "_HILDON_ZOOM_KEY_ATOM", False);
 101         if(!atom) {
 102                 qWarning("Couldn't get zoom key atom");
 103                 return;
 104         }
 105         XChangeProperty(QX11Info::display(), winId(), atom, XA_INTEGER,
 106                 32, PropModeReplace, reinterpret_cast<unsigned char *>(&val), 1);
 107 }
 108
 109 void MainWindow::closeEvent(QCloseEvent*) {
 110         grabZoomKeys(false);
 111
 112         QSettings settings;
 113         settings.setValue("show_toolbar", toolbar->isVisible());
 114         settings.setValue("rescale", scaling->isChecked());
 115         settings.sync();
 116
 117         hide();
 118
 119         disconnectFromHost();
 120 }
 121
 122 void MainWindow::about() {
 123         QMessageBox::about(this, tr("About Presence VNC"),
 124                 tr("<center><h1>Presence VNC 0.3</h1>\
 125 A touchscreen friendly VNC client\
 126 <small><p>&copy;2010 Christian Pulvermacher &lt;pulvermacher@gmx.de&gt</p>\
 127 <p>Based on KRDC, &copy; 2007-2008 Urs Wolfer</small></center>\
 128 <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>"));
 129 }
 130
 131 void MainWindow::connectDialog()
 132 {
 133         QSettings settings;
 134         QString url = QInputDialog::getText(this, "Connect to Host", "VNC Server:", QLineEdit::Normal, settings.value("last_hostname", "").toString());
 135         if(url.isEmpty()) { //dialog dismissed or nothing entered
 136                 return;
 137         }
 138         settings.setValue("last_hostname", url);
 139         url = "vnc://" + url;
 140
 141         disconnectFromHost();
 142
 143         vnc_view = new VncView(this, url, RemoteView::Quality(2)); //TODO: get quality in dialog
 144         scroll_area->setWidget(vnc_view);
 145
 146         connect(scaling, SIGNAL(toggled(bool)),
 147                 vnc_view, SLOT(enableScaling(bool)));
 148         connect(vnc_view, SIGNAL(statusChanged(RemoteView::RemoteStatus)),
 149                 this, SLOT(statusChanged(RemoteView::RemoteStatus)));
 150         vnc_view->start();
 151         vnc_view->enableScaling(scaling->isChecked());
 152         disconnect_action->setEnabled(true);
 153         toolbar->setEnabled(true);
 154 }
 155
 156 void MainWindow::disconnectFromHost()
 157 {
 158         if(!vnc_view)
 159                 return;
 160
 161 //TODO: crashes when deleting vnc_view - no idea why
 162         vnc_view->startQuitting();
 163         scroll_area->setWidget(0);
 164
 165         vnc_view->disconnect(); //remove all connections
 166         //delete vnc_view;
 167         //vnc_view = 0;
 168         disconnect_action->setEnabled(false);
 169         toolbar->setEnabled(false);
 170 }
 171
 172 void MainWindow::statusChanged(RemoteView::RemoteStatus status)
 173 {
 174         static RemoteView::RemoteStatus old_status = RemoteView::Disconnected;
 175
 176         switch(status) {
 177         case RemoteView::Connecting:
 178                 setAttribute(Qt::WA_Maemo5ShowProgressIndicator, true);
 179                 break;
 180         case RemoteView::Connected:
 181                 setAttribute(Qt::WA_Maemo5ShowProgressIndicator, false);
 182                 break;
 183         case RemoteView::Disconnecting:
 184                 if(old_status != RemoteView::Disconnected) { //Disconnecting also occurs while connecting, so check last state
 185                         QMaemo5InformationBox::information(this, "Connection lost");
 186                         close();
 187                 }
 188                 break;
 189         case RemoteView::Disconnected:
 190                 setAttribute(Qt::WA_Maemo5ShowProgressIndicator, false);
 191                 if(old_status == RemoteView::Disconnecting) {
 192                         scroll_area->setWidget(0); //remove widget
 193                 }
 194                 break;
 195         }
 196
 197         old_status = status;
 198 }
 199
 200 //when rescaling is enabled, this resizes the widget to use available screen space
 201 //necessary when rotating, showing fullscreen, etc.
 202 void MainWindow::forceResize()
 203 {
 204         if(vnc_view and scaling->isChecked()) {
 205                 vnc_view->resize(scroll_area->size());
 206         }
 207 }
 208
 209 void MainWindow::forceResizeDelayed()
 210 {
 211         QTimer::singleShot(500, this, SLOT(forceResize()));
 212 }
 213
 214 void MainWindow::toggleFullscreen()
 215 {
 216         setWindowState(windowState() ^ Qt::WindowFullScreen);
 217         forceResizeDelayed();
 218 }
 219
 220 void MainWindow::showModifierMenu()
 221 {
 222         static QMenu *mod_menu = new QMenu(tr("Modifiers"), this);
 223         static QAction *win = mod_menu->addAction(tr("Win"));
 224         static QAction *alt = mod_menu->addAction(tr("Alt"));
 225         win->setCheckable(true);
 226         alt->setCheckable(true);
 227
 228         //show menu at top-left corner of toolbar
 229         QAction *chosen = mod_menu->exec(toolbar->mapToGlobal(QPoint(0,0)));
 230         if(!chosen) {
 231                 return;
 232         } else if(chosen == alt) {
 233                 vnc_view->sendKey(Qt::Key_Alt);
 234         } else if(chosen == win) {
 235                 vnc_view->sendKey(Qt::Key_Meta);
 236         } else {
 237                 std::cout << "unhandled action?\n";
 238         }
 239 }
 240
 241 void MainWindow::showPreferences()
 242 {
 243         Preferences *p = new Preferences(this);
 244         p->exec();
 245         delete p;
 246
 247         reloadSettings();
 248 }
 249
 250 void MainWindow::reloadSettings()
 251 {
 252         QSettings settings;
 253         int rotation = settings.value("screen_rotation", 0).toInt();
 254         setAttribute(Qt::WA_Maemo5AutoOrientation, rotation == 0);
 255         setAttribute(Qt::WA_Maemo5LandscapeOrientation, rotation == 1);
 256         setAttribute(Qt::WA_Maemo5PortraitOrientation, rotation == 2);
 257
 258         if(vnc_view)
 259                 vnc_view->reloadSettings();
 260 }