doubleclicking slider sets 100% zoom
[presencevnc] / src / mainwindow.cpp
index 0ba2749..d52cc85 100644 (file)
+/*
+    Presence VNC
+    Copyright (C) 2010 Christian Pulvermacher
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License along
+    with this program; if not, write to the Free Software Foundation, Inc.,
+    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+*/
+#include "connectdialog.h"
+#include "fullscreenexitbutton.h"
+#include "keymenu.h"
 #include "mainwindow.h"
+#include "preferences.h"
+#include "scrollarea.h"
 #include "vncview.h"
 
+#ifdef Q_WS_MAEMO_5
 #include <QtMaemo5>
 #include <QX11Info>
 
 #include <X11/Xlib.h>
 #include <X11/Xatom.h>
+#endif
 
-#include <iostream>
 
 MainWindow::MainWindow(QString url, int quality):
        QMainWindow(0),
        vnc_view(0),
-       scroll_area(new QScrollArea(0))
+       scroll_area(new ScrollArea(0)),
+       key_menu(new KeyMenu(this))
 {
        setWindowTitle("Presence VNC");
-       swipe_start = QPoint(0,0);
+       setContextMenuPolicy(Qt::NoContextMenu);
+#ifdef Q_WS_MAEMO_5
        setAttribute(Qt::WA_Maemo5StackedWindow);
+#endif
+
+       migrateConfiguration();
 
        //set up toolbar
        toolbar = new QToolBar(0);
-       toolbar->addAction("Esc", this, SLOT(sendEsc()));
-       toolbar->addAction("Tab", this, SLOT(sendTab()));
+       toolbar->addAction(QChar(0x2026), this, SLOT(showKeyMenu())); //"..." button
+       toolbar->addAction(tr("Tab"), this, SLOT(sendTab()));
+       toolbar->addAction(tr("Esc"), this, SLOT(sendEsc()));
+       toolbar->addAction(tr("PgUp"), this, SLOT(sendPgUp()));
+       toolbar->addAction(tr("PgDn"), this, SLOT(sendPgDn()));
+#ifdef Q_WS_MAEMO_5
+       toolbar->addAction(QIcon("/usr/share/icons/hicolor/48x48/hildon/chat_enter.png"), "", this, SLOT(sendReturn()));
+       toolbar->addAction(QIcon("/usr/share/icons/hicolor/48x48/hildon/control_keyboard.png"), "", this, SLOT(showInputPanel()));
+#endif
+
+       QSettings settings;
+       zoom_slider = new QSlider(Qt::Horizontal, 0);
+       zoom_slider->setRange(0, 100);
+       connect(zoom_slider, SIGNAL(valueChanged(int)),
+               this, SLOT(setZoomLevel(int)));
+       connect(zoom_slider, SIGNAL(sliderReleased()),
+               this, SLOT(zoomSliderReleased()));
+       zoom_slider->setValue(settings.value("zoomlevel", 95).toInt());
+       toolbar->addWidget(zoom_slider);
+
+       toolbar->addAction(QIcon("/usr/share/icons/hicolor/48x48/hildon/general_fullsize.png"), "", this, SLOT(toggleFullscreen()));
        addToolBar(toolbar);
+       toolbar->setVisible(settings.value("show_toolbar", true).toBool());
+       toolbar->setEnabled(false);
 
        //set up menu
-       QMenuBar *menu = new QMenuBar(this);
-       QAction *connect_action = new QAction("Connect", this);
-       disconnect_action = new QAction("Disconnect", this);
-       menu->addAction(connect_action);
-       menu->addAction(disconnect_action);
-       scaling = new QAction("Rescale Remote Screen", this);
-       scaling->setCheckable(true);
-       scaling->setChecked(true);
-       menu->addAction(scaling);
-       QAction *show_toolbar = new QAction("Show Toolbar", this);
+       QAction *connect_action = new QAction(tr("Connect"), this);
+       disconnect_action = new QAction(tr("Disconnect"), this);
+       show_toolbar = new QAction(tr("Show Toolbar"), this);
        show_toolbar->setCheckable(true);
-       show_toolbar->setChecked(true);
-       menu->addAction(show_toolbar);
-       QAction *about_action = new QAction("About", this);
-       menu->addAction(about_action);
+       show_toolbar->setChecked(settings.value("show_toolbar", true).toBool());
+       QAction *pref_action = new QAction(tr("Preferences"), this);
+       QAction *about_action = new QAction(tr("About"), this);
 
-       //menu->setAttribute(Qt::WA_Maemo5StackedWindow);
-       //menu->hide();
+#ifdef Q_WS_MAEMO_5
+       menuBar()->addAction(connect_action);
+       menuBar()->addAction(disconnect_action);
+       menuBar()->addAction(show_toolbar);
+       menuBar()->addAction(pref_action);
+       menuBar()->addAction(about_action);
+#else
+       QMenu* session_menu = menuBar()->addMenu(tr("&Session"));
+       session_menu->addAction(connect_action);
+       session_menu->addAction(disconnect_action);
+       session_menu->addSeparator();
+       session_menu->addAction(pref_action);
+       session_menu->addSeparator();
+       session_menu->addAction(tr("&Quit"), this, SLOT(close()));
+
+       QMenu* view_menu = menuBar()->addMenu(tr("&View"));
+       view_menu->addAction(show_toolbar);
+
+       QMenu* help_menu = menuBar()->addMenu(tr("&Help"));
+       help_menu->addAction(about_action);
+#endif
 
        connect(about_action, SIGNAL(triggered()),
                this, SLOT(about()));
+       connect(pref_action, SIGNAL(triggered()),
+               this, SLOT(showPreferences()));
        connect(connect_action, SIGNAL(triggered()),
-               this, SLOT(connectDialog()));
+               this, SLOT(showConnectDialog()));
        connect(disconnect_action, SIGNAL(triggered()),
                this, SLOT(disconnectFromHost()));
        connect(show_toolbar, SIGNAL(toggled(bool)),
                toolbar, SLOT(setVisible(bool)));
+       connect(show_toolbar, SIGNAL(toggled(bool)),
+               this, SLOT(updateScreenSpaceDelayed()));
 
        setCentralWidget(scroll_area);
+       new FullScreenExitButton(this);
 
        grabZoomKeys(true);
-       setAttribute(Qt::WA_Maemo5AutoOrientation, true);
-       //setAttribute(Qt::WA_Maemo5PortraitOrientation, true);
+       reloadSettings();
 
        if(url.isNull()) {
                disconnect_action->setEnabled(false);
-               toolbar->setEnabled(false);
-               connectDialog();
+               showConnectDialog();
        } else {
-               vnc_view = new VncView(0, url, RemoteView::Quality(quality));
-               connect(scaling, SIGNAL(toggled(bool)),
-                       vnc_view, SLOT(enableScaling(bool)));
+               vnc_view = new VncView(this, url, RemoteView::Quality(quality));
                connect(vnc_view, SIGNAL(statusChanged(RemoteView::RemoteStatus)),
                        this, SLOT(statusChanged(RemoteView::RemoteStatus)));
                scroll_area->setWidget(vnc_view);
@@ -76,6 +138,7 @@ MainWindow::MainWindow(QString url, int quality):
 
 void MainWindow::grabZoomKeys(bool grab)
 {
+#ifdef Q_WS_MAEMO_5
        unsigned long val = (grab)?1:0;
        Atom atom = XInternAtom(QX11Info::display(), "_HILDON_ZOOM_KEY_ATOM", False);
        if(!atom) {
@@ -84,72 +147,57 @@ void MainWindow::grabZoomKeys(bool grab)
        }
        XChangeProperty(QX11Info::display(), winId(), atom, XA_INTEGER,
                32, PropModeReplace, reinterpret_cast<unsigned char *>(&val), 1);
+#endif
 }
 
 void MainWindow::closeEvent(QCloseEvent*) {
-       hide();
        grabZoomKeys(false);
+
+       QSettings settings;
+       settings.setValue("show_toolbar", show_toolbar->isChecked());
+       settings.setValue("zoomlevel", zoom_slider->value());
+       settings.sync();
+
+       hide();
+
        disconnectFromHost();
 }
 
 void MainWindow::about() {
        QMessageBox::about(this, tr("About Presence VNC"),
-               tr("<center><h1>Presence VNC 0.1 alpha</h1>\
-A touch screen friendly VNC client\
-<small><p>&copy;2010 Christian Pulvermacher &lt;pulvermacher@gmx.de&gt</p>\
-<p>Based on KRDC, &copy; 2007-2008 Urs Wolfer</small></center>\
-<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>"));
-}
-
-/* swipe not used, and doesn't work without scaling anyway :/
-virtual bool event(QEvent *event) {
-       if(event->type() == QEvent::MouseMove) {
-               QMouseEvent *ev = dynamic_cast<QMouseEvent* >(event);
-               if(!swipe_start.isNull()) {
-                       QPoint diff = swipe_start - ev->pos();
-                       const int swipe_dist = 60;
-                       if(diff.x() > swipe_dist and diff.y() < swipe_dist and diff.y() > -swipe_dist) { //
-                               menu->show();
-                               swipe_start = QPoint(0,0);
-                       }
-               } else if((width() - ev->x()) < 10) {
-                       swipe_start = ev->pos();
-               }
-               std::cout << "mousex: " << width() - ev->x() << "\n";
-               //TODO: make scrolling over border result in wheel events? i get weird (out of range) mouse events when that happens
-               return true;
-       } else if(event->type() == QEvent::MouseButtonRelease) {
-               swipe_start = QPoint(0,0);
-               return true;
-       } else {
-//                     std::cout << "event " << event->type() << "\n";
-               return QScrollArea::event(event);
-       }
+               tr("<center><h1>Presence VNC 0.7</h1>\
+<p>A touchscreen friendly VNC client</p>\
+<p><a href=\"https://garage.maemo.org/projects/presencevnc/\">https://garage.maemo.org/projects/presencevnc</a></p></center>\
+<small><p>&copy;2010 Christian Pulvermacher &lt;pulvermacher@gmx.de&gt;<br />\
+Based on KRDC, &copy; 2007-2008 Urs Wolfer<br />\
+and LibVNCServer, &copy; 2001-2003 Johannes E. Schindelin</p>\
+<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>"));
 }
-*/
 
-void MainWindow::connectDialog()
+void MainWindow::showConnectDialog()
 {
-       QSettings settings;
-       QString url = QInputDialog::getText(this, "Connect to Host", "VNC Server:", QLineEdit::Normal, settings.value("last_hostname", "").toString());
-       if(url.isEmpty()) { //dialog dismissed or nothing entered
-               return;
-       }
-       settings.setValue("last_hostname", url);
-       url = "vnc://" + url;
+       ConnectDialog *connect_dialog = new ConnectDialog(this);
+       connect(connect_dialog, SIGNAL(connectToHost(QString, int, int)),
+               this, SLOT(connectToHost(QString, int, int)));
+       connect_dialog->exec();
+}
 
+void MainWindow::connectToHost(QString url, int quality, int listen_port)
+{
        disconnectFromHost();
 
-       vnc_view = new VncView(0, url, RemoteView::Quality(2)); //TODO: get quality in dialog
-       scroll_area->setWidget(vnc_view);
+       vnc_view = new VncView(this, url, RemoteView::Quality(quality), listen_port);
 
-       connect(scaling, SIGNAL(toggled(bool)),
-               vnc_view, SLOT(enableScaling(bool)));
        connect(vnc_view, SIGNAL(statusChanged(RemoteView::RemoteStatus)),
                this, SLOT(statusChanged(RemoteView::RemoteStatus)));
+       scroll_area->setWidget(vnc_view);
        vnc_view->start();
+
        disconnect_action->setEnabled(true);
-       toolbar->setEnabled(true);
+
+       //reset key menu
+       delete key_menu;
+       key_menu = new KeyMenu(this);
 }
 
 void MainWindow::disconnectFromHost()
@@ -157,14 +205,12 @@ void MainWindow::disconnectFromHost()
        if(!vnc_view)
                return;
 
-       vnc_view->startQuitting();
+       disconnect_action->setEnabled(false);
+       toolbar->setEnabled(false);
        scroll_area->setWidget(0);
 
-       vnc_view->disconnect(); //remove all connections
        delete vnc_view;
        vnc_view = 0;
-       disconnect_action->setEnabled(false);
-       toolbar->setEnabled(false);
 }
 
 void MainWindow::statusChanged(RemoteView::RemoteStatus status)
@@ -173,22 +219,173 @@ void MainWindow::statusChanged(RemoteView::RemoteStatus status)
 
        switch(status) {
        case RemoteView::Connecting:
+#ifdef Q_WS_MAEMO_5
                setAttribute(Qt::WA_Maemo5ShowProgressIndicator, true);
+#endif
                break;
        case RemoteView::Connected:
+#ifdef Q_WS_MAEMO_5
                setAttribute(Qt::WA_Maemo5ShowProgressIndicator, false);
+#endif
+               toolbar->setEnabled(true);
+
+               vnc_view->setZoomLevel(zoom_slider->value());
+               vnc_view->forceFullRepaint();
                break;
        case RemoteView::Disconnecting:
-               if(old_status != RemoteView::Disconnected) { //Disconnecting also occurs while connecting, so check last state
-                       QMaemo5InformationBox::information(this, "Connection lost");
-               }
+               if(old_status == RemoteView::Disconnected) //Disconnecting also occurs while connecting, so check last state
+                       break;
+
+               if(disconnect_action->isEnabled()) //don't show when manually disconnecting
+                       scroll_area->showMessage(tr("Connection lost"));
+               
+               //clean up
+               scroll_area->setWidget(0);
+               vnc_view = 0;
+               disconnect_action->setEnabled(false);
+               toolbar->setEnabled(false);
+
+               //exit fullscreen mode
+               if(windowState() & Qt::WindowFullScreen)
+                       setWindowState(windowState() ^ Qt::WindowFullScreen);
                break;
        case RemoteView::Disconnected:
+#ifdef Q_WS_MAEMO_5
+               setAttribute(Qt::WA_Maemo5ShowProgressIndicator, false);
+#endif
                if(old_status == RemoteView::Disconnecting) {
                        scroll_area->setWidget(0); //remove widget
                }
                break;
+       default: //avoid compiler warnings
+               break;
        }
 
        old_status = status;
 }
+
+void MainWindow::forceRepaint()
+{
+       if(vnc_view)
+               vnc_view->forceFullRepaint();
+}
+
+//updates available screen space for current zoom level
+//necessary when rotating, showing fullscreen, etc.
+void MainWindow::updateScreenSpace()
+{
+       if(vnc_view) {
+               vnc_view->setZoomLevel();
+       }
+} 
+
+void MainWindow::updateScreenSpaceDelayed()
+{
+       QTimer::singleShot(500, this, SLOT(updateScreenSpace()));
+}
+
+void MainWindow::toggleFullscreen()
+{
+       bool in_fullscreen = windowState() & Qt::WindowFullScreen;
+
+       //hide menu/toolbar in fullscreen (new state is !in_fullscreen)
+       toolbar->setVisible(show_toolbar->isChecked() and in_fullscreen);
+
+#ifndef Q_WS_MAEMO_5
+       //menu bar is invisible by default on maemo
+       menuBar()->setVisible(in_fullscreen);
+#endif
+
+       setWindowState(windowState() ^ Qt::WindowFullScreen); 
+       updateScreenSpaceDelayed();
+}
+
+void MainWindow::showKeyMenu()
+{
+       key_menu->exec();
+       vnc_view->sendKeySequence(key_menu->getKeySequence());
+}
+
+void MainWindow::showPreferences()
+{
+       Preferences *p = new Preferences(this);
+       p->exec();
+       delete p;
+
+       reloadSettings();
+}
+
+void MainWindow::reloadSettings()
+{
+#ifdef Q_WS_MAEMO_5
+       QSettings settings;
+       int rotation = settings.value("screen_rotation", 0).toInt();
+       setAttribute(Qt::WA_Maemo5AutoOrientation, rotation == 0);
+       setAttribute(Qt::WA_Maemo5LandscapeOrientation, rotation == 1);
+       setAttribute(Qt::WA_Maemo5PortraitOrientation, rotation == 2);
+#endif
+
+       if(vnc_view)
+               vnc_view->reloadSettings();
+}
+
+void MainWindow::resizeEvent(QResizeEvent *event)
+{
+       QMainWindow::resizeEvent(event);
+
+       updateScreenSpace();
+       if(vnc_view)
+               vnc_view->setZoomLevel(zoom_slider->value());
+       
+#ifdef Q_WS_MAEMO_5
+       //hide zoom slider in portrait mode
+       zoom_slider->setVisible(height() < width());
+#endif
+}
+
+void MainWindow::showInputPanel()
+{
+#ifdef Q_WS_MAEMO_5
+       //TODO: when hardware keyboard is open, this will only cause the IM to mess up 'real' key events
+       vnc_view->setAttribute(Qt::WA_InputMethodEnabled, true);
+       vnc_view->setInputMethodHints(Qt::ImhNoAutoUppercase); //without this, IM starts with caps lock
+
+       QEvent event(QEvent::RequestSoftwareInputPanel);
+       QApplication::sendEvent(vnc_view, &event);
+#endif
+}
+
+void MainWindow::setZoomLevel(int level)
+{
+       if(!vnc_view)
+               return;
+       
+       const qreal old_factor = vnc_view->getZoomFactor();
+       QPoint center = vnc_view->visibleRegion().boundingRect().center();
+
+       vnc_view->setZoomLevel(level);
+
+       const qreal new_factor = vnc_view->getZoomFactor();
+
+       //scroll to center, if zoom level actually changed
+       if(old_factor != new_factor) {
+               center = center * (double(new_factor)/old_factor);
+               scroll_area->ensureVisible(center.x(), center.y(),
+                       vnc_view->visibleRegion().boundingRect().width()/2,
+                       vnc_view->visibleRegion().boundingRect().height()/2);
+               vnc_view->update();
+
+               scroll_area->showMessage(tr("Zoom: %1\%").arg(qRound(100*new_factor)));
+       }
+}
+
+void MainWindow::zoomSliderReleased()
+{
+       static QTime time;
+       if(!time.isNull() and time.elapsed() < 700) //double clicked
+               zoom_slider->setValue(95); //100%
+       else 
+               forceRepaint();
+       
+       time.restart();
+}