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 "mainwindow.h"
  20 #include "preferences.h"
  21 #include "vncview.h"
  22
  23 #include <QtMaemo5>
  24 #include <QX11Info>
  25
  26 #include <X11/Xlib.h>
  27 #include <X11/Xatom.h>
  28
  29 #include <iostream>
  30
  31 MainWindow::MainWindow(QString url, int quality):
  32         QMainWindow(0),
  33         vnc_view(0),
  34         scroll_area(new QScrollArea(0))
  35 {
  36         setWindowTitle("Presence VNC");
  37         setAttribute(Qt::WA_Maemo5StackedWindow);
  38
  39         migrateConfiguration();
  40
  41         QSettings settings;
  42
  43         //set up toolbar
  44         toolbar = new QToolBar(0);
  45         //toolbar->setAttribute(Qt::WA_InputMethodEnabled, true);
  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("IM", toolbar, SLOT(setFocus())); //doesn't work
  52         toolbar->addAction(QIcon("/usr/share/icons/hicolor/48x48/hildon/general_fullsize.png"), "", this, SLOT(toggleFullscreen()));
  53         addToolBar(toolbar);
  54         toolbar->setVisible(settings.value("show_toolbar", true).toBool());
  55
  56         //set up menu
  57         QMenuBar *menu = new QMenuBar(this);
  58         QAction *connect_action = new QAction("Connect", this);
  59         disconnect_action = new QAction("Disconnect", this);
  60         menu->addAction(connect_action);
  61         menu->addAction(disconnect_action);
  62         scaling = new QAction("Fit to Screen", this);
  63         scaling->setCheckable(true);
  64         scaling->setChecked(settings.value("rescale", true).toBool());
  65         menu->addAction(scaling);
  66         QAction *show_toolbar = new QAction("Show Toolbar", this);
  67         show_toolbar->setCheckable(true);
  68         show_toolbar->setChecked(settings.value("show_toolbar", true).toBool());
  69         menu->addAction(show_toolbar);
  70         QAction *pref_action = new QAction("Preferences", this);
  71         menu->addAction(pref_action);
  72         QAction *about_action = new QAction("About", this);
  73         menu->addAction(about_action);
  74
  75         //menu->setAttribute(Qt::WA_Maemo5StackedWindow);
  76         //menu->hide();
  77
  78         connect(about_action, SIGNAL(triggered()),
  79                 this, SLOT(about()));
  80         connect(pref_action, SIGNAL(triggered()),
  81                 this, SLOT(showPreferences()));
  82         connect(connect_action, SIGNAL(triggered()),
  83                 this, SLOT(connectDialog()));
  84         connect(disconnect_action, SIGNAL(triggered()),
  85                 this, SLOT(disconnectFromHost()));
  86         connect(show_toolbar, SIGNAL(toggled(bool)),
  87                 toolbar, SLOT(setVisible(bool)));
  88         connect(show_toolbar, SIGNAL(toggled(bool)),
  89                 this, SLOT(forceResizeDelayed()));
  90
  91         setCentralWidget(scroll_area);
  92
  93         grabZoomKeys(true);
  94         reloadSettings();
  95
  96         connect(QApplication::desktop(), SIGNAL(resized(int)),
  97                 this, SLOT(forceResize()));
  98
  99         if(url.isNull()) {
 100                 disconnect_action->setEnabled(false);
 101                 toolbar->setEnabled(false);
 102                 connectDialog();
 103         } else {
 104                 vnc_view = new VncView(this, url, RemoteView::Quality(quality));
 105                 connect(scaling, SIGNAL(toggled(bool)),
 106                         vnc_view, SLOT(enableScaling(bool)));
 107                 connect(vnc_view, SIGNAL(statusChanged(RemoteView::RemoteStatus)),
 108                         this, SLOT(statusChanged(RemoteView::RemoteStatus)));
 109                 scroll_area->setWidget(vnc_view);
 110                 vnc_view->start();
 111                 vnc_view->enableScaling(scaling->isChecked());
 112         }
 113 }
 114
 115 void MainWindow::grabZoomKeys(bool grab)
 116 {
 117         unsigned long val = (grab)?1:0;
 118         Atom atom = XInternAtom(QX11Info::display(), "_HILDON_ZOOM_KEY_ATOM", False);
 119         if(!atom) {
 120                 qWarning("Couldn't get zoom key atom");
 121                 return;
 122         }
 123         XChangeProperty(QX11Info::display(), winId(), atom, XA_INTEGER,
 124                 32, PropModeReplace, reinterpret_cast<unsigned char *>(&val), 1);
 125 }
 126
 127 void MainWindow::closeEvent(QCloseEvent*) {
 128         grabZoomKeys(false);
 129
 130         QSettings settings;
 131         settings.setValue("show_toolbar", toolbar->isVisible());
 132         settings.setValue("rescale", scaling->isChecked());
 133         settings.sync();
 134
 135         hide();
 136
 137         disconnectFromHost();
 138 }
 139
 140 void MainWindow::about() {
 141         QMessageBox::about(this, tr("About Presence VNC"),
 142                 tr("<center><h1>Presence VNC 0.3</h1>\
 143 A touchscreen friendly VNC client\
 144 <small><p>&copy;2010 Christian Pulvermacher &lt;pulvermacher@gmx.de&gt;</p>\
 145 <p>Based on KRDC, &copy; 2007-2008 Urs Wolfer</p>\
 146 <p>and LibVNCServer, &copy; 2001-2003 Johannes E. Schindelin</p></small></center>\
 147 <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>"));
 148 }
 149
 150 void MainWindow::connectDialog()
 151 {
 152         QSettings settings;
 153         QString url = QInputDialog::getText(this, "Connect to Host", "VNC Server:", QLineEdit::Normal, settings.value("last_hostname", "").toString());
 154         if(url.isEmpty()) { //dialog dismissed or nothing entered
 155                 return;
 156         }
 157         settings.setValue("last_hostname", url);
 158         url = "vnc://" + url;
 159
 160         disconnectFromHost();
 161
 162         vnc_view = new VncView(this, url, RemoteView::Quality(2)); //TODO: get quality in dialog
 163
 164         connect(scaling, SIGNAL(toggled(bool)),
 165                 vnc_view, SLOT(enableScaling(bool)));
 166         connect(vnc_view, SIGNAL(statusChanged(RemoteView::RemoteStatus)),
 167                 this, SLOT(statusChanged(RemoteView::RemoteStatus)));
 168         scroll_area->setWidget(vnc_view);
 169         vnc_view->start();
 170         vnc_view->enableScaling(scaling->isChecked());
 171         disconnect_action->setEnabled(true);
 172         toolbar->setEnabled(true);
 173 }
 174
 175 void MainWindow::disconnectFromHost()
 176 {
 177         if(!vnc_view)
 178                 return;
 179
 180         scroll_area->setWidget(0);
 181
 182         vnc_view->disconnect(); //remove all signal-slot connections
 183         delete vnc_view;
 184         vnc_view = 0;
 185         disconnect_action->setEnabled(false);
 186         toolbar->setEnabled(false);
 187 }
 188
 189 void MainWindow::statusChanged(RemoteView::RemoteStatus status)
 190 {
 191         static RemoteView::RemoteStatus old_status = RemoteView::Disconnected;
 192
 193         switch(status) {
 194         case RemoteView::Connecting:
 195                 setAttribute(Qt::WA_Maemo5ShowProgressIndicator, true);
 196                 break;
 197         case RemoteView::Connected:
 198                 setAttribute(Qt::WA_Maemo5ShowProgressIndicator, false);
 199                 if(!scaling->isChecked()) {
 200                         //if remote desktop is shown in full size, 2nd connection will have black screen
 201                         //ugly hack to force a refresh (forceFullRepaint() doesn't repaint?? -> vnc_view hidden???)
 202                         vnc_view->resize(scroll_area->size());
 203                         vnc_view->enableScaling(false);
 204                 }
 205                 break;
 206         case RemoteView::Disconnecting:
 207                 if(old_status != RemoteView::Disconnected) { //Disconnecting also occurs while connecting, so check last state
 208                         QMaemo5InformationBox::information(this, "Connection lost");
 209
 210                         //clean up
 211                         scroll_area->setWidget(0);
 212                         vnc_view = 0;
 213                         disconnect_action->setEnabled(false);
 214                         toolbar->setEnabled(false);
 215
 216                         //exit fullscreen mode
 217                         if(windowState() & Qt::WindowFullScreen)
 218                                 setWindowState(windowState() ^ Qt::WindowFullScreen);
 219                 }
 220                 break;
 221         case RemoteView::Disconnected:
 222                 setAttribute(Qt::WA_Maemo5ShowProgressIndicator, false);
 223                 if(old_status == RemoteView::Disconnecting) {
 224                         scroll_area->setWidget(0); //remove widget
 225                 }
 226                 break;
 227         }
 228
 229         old_status = status;
 230 }
 231
 232 //when rescaling is enabled, this resizes the widget to use available screen space
 233 //necessary when rotating, showing fullscreen, etc.
 234 void MainWindow::forceResize()
 235 {
 236         if(vnc_view and scaling->isChecked()) {
 237                 vnc_view->resize(scroll_area->size());
 238         }
 239 }
 240
 241 void MainWindow::forceResizeDelayed()
 242 {
 243         QTimer::singleShot(500, this, SLOT(forceResize()));
 244 }
 245
 246 void MainWindow::toggleFullscreen()
 247 {
 248         setWindowState(windowState() ^ Qt::WindowFullScreen);
 249         forceResizeDelayed();
 250 }
 251
 252 void MainWindow::showModifierMenu()
 253 {
 254         static QMenu *mod_menu = new QMenu(tr("Modifiers"), this);
 255         static QAction *win = mod_menu->addAction(tr("Win"));
 256         static QAction *alt = mod_menu->addAction(tr("Alt"));
 257         win->setCheckable(true);
 258         alt->setCheckable(true);
 259
 260         //show menu at top-left corner of toolbar
 261         QAction *chosen = mod_menu->exec(toolbar->mapToGlobal(QPoint(0,0)));
 262         if(!chosen) {
 263                 return;
 264         } else if(chosen == alt) {
 265                 vnc_view->sendKey(Qt::Key_Alt);
 266         } else if(chosen == win) {
 267                 vnc_view->sendKey(Qt::Key_Meta);
 268         } else {
 269                 std::cout << "unhandled action?\n";
 270         }
 271 }
 272
 273 void MainWindow::showPreferences()
 274 {
 275         Preferences *p = new Preferences(this);
 276         p->exec();
 277         delete p;
 278
 279         reloadSettings();
 280 }
 281
 282 void MainWindow::reloadSettings()
 283 {
 284         QSettings settings;
 285         int rotation = settings.value("screen_rotation", 0).toInt();
 286         setAttribute(Qt::WA_Maemo5AutoOrientation, rotation == 0);
 287         setAttribute(Qt::WA_Maemo5LandscapeOrientation, rotation == 1);
 288         setAttribute(Qt::WA_Maemo5PortraitOrientation, rotation == 2);
 289
 290         if(vnc_view)
 291                 vnc_view->reloadSettings();
 292 }