vcs.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 //      swipe_start = QPoint(0,0);
  20         setAttribute(Qt::WA_Maemo5StackedWindow);
  21         QSettings settings;
  22
  23         //set up toolbar
  24         toolbar = new QToolBar(0);
  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(QIcon("/usr/share/icons/hicolor/48x48/hildon/general_fullsize.png"), "", this, SLOT(toggleFullscreen()));
  31         addToolBar(toolbar);
  32         toolbar->setVisible(settings.value("show_toolbar", true).toBool());
  33
  34         //set up menu
  35         QMenuBar *menu = new QMenuBar(this);
  36         QAction *connect_action = new QAction("Connect", this);
  37         disconnect_action = new QAction("Disconnect", this);
  38         menu->addAction(connect_action);
  39         menu->addAction(disconnect_action);
  40         scaling = new QAction("Rescale Remote Screen", this);
  41         scaling->setCheckable(true);
  42         scaling->setChecked(settings.value("rescale", true).toBool());
  43         menu->addAction(scaling);
  44         QAction *show_toolbar = new QAction("Show Toolbar", this);
  45         show_toolbar->setCheckable(true);
  46         show_toolbar->setChecked(settings.value("show_toolbar", true).toBool());
  47         menu->addAction(show_toolbar);
  48         QAction *pref_action = new QAction("Preferences", this);
  49         menu->addAction(pref_action);
  50         QAction *about_action = new QAction("About", this);
  51         menu->addAction(about_action);
  52
  53         //menu->setAttribute(Qt::WA_Maemo5StackedWindow);
  54         //menu->hide();
  55
  56         connect(about_action, SIGNAL(triggered()),
  57                 this, SLOT(about()));
  58         connect(pref_action, SIGNAL(triggered()),
  59                 this, SLOT(showPreferences()));
  60         connect(connect_action, SIGNAL(triggered()),
  61                 this, SLOT(connectDialog()));
  62         connect(disconnect_action, SIGNAL(triggered()),
  63                 this, SLOT(disconnectFromHost()));
  64         connect(show_toolbar, SIGNAL(toggled(bool)),
  65                 toolbar, SLOT(setVisible(bool)));
  66         connect(show_toolbar, SIGNAL(toggled(bool)),
  67                 this, SLOT(forceResizeDelayed()));
  68
  69         setCentralWidget(scroll_area);
  70
  71         grabZoomKeys(true);
  72         loadPreferences();
  73
  74         connect(QApplication::desktop(), SIGNAL(resized(int)),
  75                 this, SLOT(forceResize()));
  76
  77         if(url.isNull()) {
  78                 disconnect_action->setEnabled(false);
  79                 toolbar->setEnabled(false);
  80                 connectDialog();
  81         } else {
  82                 vnc_view = new VncView(0, url, RemoteView::Quality(quality));
  83                 connect(scaling, SIGNAL(toggled(bool)),
  84                         vnc_view, SLOT(enableScaling(bool)));
  85                 connect(vnc_view, SIGNAL(statusChanged(RemoteView::RemoteStatus)),
  86                         this, SLOT(statusChanged(RemoteView::RemoteStatus)));
  87                 scroll_area->setWidget(vnc_view);
  88                 vnc_view->start();
  89                 vnc_view->enableScaling(scaling->isChecked());
  90         }
  91 }
  92
  93 void MainWindow::grabZoomKeys(bool grab)
  94 {
  95         unsigned long val = (grab)?1:0;
  96         Atom atom = XInternAtom(QX11Info::display(), "_HILDON_ZOOM_KEY_ATOM", False);
  97         if(!atom) {
  98                 qWarning("Couldn't get zoom key atom");
  99                 return;
 100         }
 101         XChangeProperty(QX11Info::display(), winId(), atom, XA_INTEGER,
 102                 32, PropModeReplace, reinterpret_cast<unsigned char *>(&val), 1);
 103 }
 104
 105 void MainWindow::closeEvent(QCloseEvent*) {
 106         grabZoomKeys(false);
 107
 108         QSettings settings;
 109         settings.setValue("show_toolbar", toolbar->isVisible());
 110         settings.setValue("rescale", scaling->isChecked());
 111         settings.sync();
 112
 113         hide();
 114
 115         disconnectFromHost();
 116 }
 117
 118 void MainWindow::about() {
 119         QMessageBox::about(this, tr("About Presence VNC"),
 120                 tr("<center><h1>Presence VNC 0.1 beta</h1>\
 121 A touch screen friendly VNC client\
 122 <small><p>&copy;2010 Christian Pulvermacher &lt;pulvermacher@gmx.de&gt</p>\
 123 <p>Based on KRDC, &copy; 2007-2008 Urs Wolfer</small></center>\
 124 <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>"));
 125 }
 126
 127 /* swipe not used, and doesn't work without scaling anyway :/
 128 virtual bool event(QEvent *event) {
 129         if(event->type() == QEvent::MouseMove) {
 130                 QMouseEvent *ev = dynamic_cast<QMouseEvent* >(event);
 131                 if(!swipe_start.isNull()) {
 132                         QPoint diff = swipe_start - ev->pos();
 133                         const int swipe_dist = 60;
 134                         if(diff.x() > swipe_dist and diff.y() < swipe_dist and diff.y() > -swipe_dist) { //
 135                                 menu->show();
 136                                 swipe_start = QPoint(0,0);
 137                         }
 138                 } else if((width() - ev->x()) < 10) {
 139                         swipe_start = ev->pos();
 140                 }
 141                 std::cout << "mousex: " << width() - ev->x() << "\n";
 142                 //TODO: make scrolling over border result in wheel events? i get weird (out of range) mouse events when that happens
 143                 return true;
 144         } else if(event->type() == QEvent::MouseButtonRelease) {
 145                 swipe_start = QPoint(0,0);
 146                 return true;
 147         } else {
 148 //                      std::cout << "event " << event->type() << "\n";
 149                 return QScrollArea::event(event);
 150         }
 151 }
 152 */
 153
 154 void MainWindow::connectDialog()
 155 {
 156         QSettings settings;
 157         QString url = QInputDialog::getText(this, "Connect to Host", "VNC Server:", QLineEdit::Normal, settings.value("last_hostname", "").toString());
 158         if(url.isEmpty()) { //dialog dismissed or nothing entered
 159                 return;
 160         }
 161         settings.setValue("last_hostname", url);
 162         url = "vnc://" + url;
 163
 164         disconnectFromHost();
 165
 166         vnc_view = new VncView(0, url, RemoteView::Quality(2)); //TODO: get quality in dialog
 167         scroll_area->setWidget(vnc_view);
 168
 169         connect(scaling, SIGNAL(toggled(bool)),
 170                 vnc_view, SLOT(enableScaling(bool)));
 171         connect(vnc_view, SIGNAL(statusChanged(RemoteView::RemoteStatus)),
 172                 this, SLOT(statusChanged(RemoteView::RemoteStatus)));
 173         vnc_view->start();
 174         vnc_view->enableScaling(scaling->isChecked());
 175         disconnect_action->setEnabled(true);
 176         toolbar->setEnabled(true);
 177 }
 178
 179 void MainWindow::disconnectFromHost()
 180 {
 181         if(!vnc_view)
 182                 return;
 183
 184         vnc_view->startQuitting();
 185         scroll_area->setWidget(0);
 186
 187         vnc_view->disconnect(); //remove all connections
 188         delete vnc_view;
 189         vnc_view = 0;
 190         disconnect_action->setEnabled(false);
 191         toolbar->setEnabled(false);
 192 }
 193
 194 void MainWindow::statusChanged(RemoteView::RemoteStatus status)
 195 {
 196         static RemoteView::RemoteStatus old_status = RemoteView::Disconnected;
 197
 198         switch(status) {
 199         case RemoteView::Connecting:
 200                 setAttribute(Qt::WA_Maemo5ShowProgressIndicator, true);
 201                 break;
 202         case RemoteView::Connected:
 203                 setAttribute(Qt::WA_Maemo5ShowProgressIndicator, false);
 204                 break;
 205         case RemoteView::Disconnecting:
 206                 if(old_status != RemoteView::Disconnected) { //Disconnecting also occurs while connecting, so check last state
 207                         QMaemo5InformationBox::information(this, "Connection lost");
 208                 }
 209                 break;
 210         case RemoteView::Disconnected:
 211                 if(old_status == RemoteView::Disconnecting) {
 212                         scroll_area->setWidget(0); //remove widget
 213                 }
 214                 break;
 215         }
 216
 217         old_status = status;
 218 }
 219
 220 //when rescaling is enabled, this resizes the widget to use available screen space
 221 //necessary when rotating, showing fullscreen, etc.
 222 void MainWindow::forceResize()
 223 {
 224         if(vnc_view and scaling->isChecked()) {
 225                 vnc_view->resize(scroll_area->size());
 226         }
 227 }
 228
 229 void MainWindow::forceResizeDelayed()
 230 {
 231         QTimer::singleShot(500, this, SLOT(forceResize()));
 232 }
 233
 234 void MainWindow::toggleFullscreen()
 235 {
 236         setWindowState(windowState() ^ Qt::WindowFullScreen);
 237         forceResizeDelayed();
 238 }
 239
 240 void MainWindow::showModifierMenu()
 241 {
 242         static QMenu *mod_menu = new QMenu(tr("Modifiers"), this);
 243         static QAction *win = mod_menu->addAction(tr("Win"));
 244         static QAction *alt = mod_menu->addAction(tr("Alt"));
 245         win->setCheckable(true);
 246         alt->setCheckable(true);
 247
 248         //show menu at top-left corner of toolbar
 249         QAction *chosen = mod_menu->exec(toolbar->mapToGlobal(QPoint(0,0)));
 250         if(!chosen) {
 251                 return;
 252         } else if(chosen == alt) {
 253                 vnc_view->sendKey(Qt::Key_Alt);
 254         } else if(chosen == win) {
 255                 vnc_view->sendKey(Qt::Key_Meta);
 256         } else {
 257                 std::cout << "unhandled action?\n";
 258         }
 259 }
 260
 261 void MainWindow::showPreferences()
 262 {
 263         Preferences *p = new Preferences(this);
 264         p->exec();
 265         delete p;
 266
 267         loadPreferences();
 268 }
 269
 270 void MainWindow::loadPreferences()
 271 {
 272         QSettings settings;
 273         int rotation = settings.value("screen_rotation", 0).toInt();
 274         setAttribute(Qt::WA_Maemo5AutoOrientation, rotation == 0);
 275         setAttribute(Qt::WA_Maemo5LandscapeOrientation, rotation == 1);
 276         setAttribute(Qt::WA_Maemo5PortraitOrientation, rotation == 2);
 277 }