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

   1 /****************************************************************************
   2 **
   3 ** Copyright (C) 2007-2008 Urs Wolfer <uwolfer @ kde.org>
   4 **
   5 ** This file is part of KDE.
   6 **
   7 ** This program is free software; you can redistribute it and/or modify
   8 ** it under the terms of the GNU General Public License as published by
   9 ** the Free Software Foundation; either version 2 of the License, or
  10 ** (at your option) any later version.
  11 **
  12 ** This program is distributed in the hope that it will be useful,
  13 ** but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  15 ** GNU General Public License for more details.
  16 **
  17 ** You should have received a copy of the GNU General Public License
  18 ** along with this program; see the file COPYING. If not, write to
  19 ** the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  20 ** Boston, MA 02110-1301, USA.
  21 **
  22 ****************************************************************************/
  23
  24 #include "vncview.h"
  25
  26 #include <QMessageBox>
  27 #include <QInputDialog>
  28 #define KMessageBox QMessageBox
  29 #define error(parent, message, caption) \
  30 critical(parent, caption, message)
  31
  32 #include <QApplication>
  33 #include <QBitmap>
  34 #include <QCheckBox>
  35 #include <QDialog>
  36 #include <QImage>
  37 #include <QHBoxLayout>
  38 #include <QVBoxLayout>
  39 #include <QPainter>
  40 #include <QMouseEvent>
  41 #include <QPushButton>
  42 #include <QEvent>
  43 #include <QSettings>
  44 #include <QTime>
  45 #include <QTimer>
  46
  47
  48 // Definition of key modifier mask constants
  49 #define KMOD_Alt_R      0x01
  50 #define KMOD_Alt_L      0x02
  51 #define KMOD_Meta_L     0x04
  52 #define KMOD_Control_L  0x08
  53 #define KMOD_Shift_L    0x10
  54
  55 //local cursor width/height in px, should be an odd number
  56 const int CURSOR_SIZE = 7;
  57
  58 const int TAP_PRESS_TIME = 180;
  59 const int DOUBLE_TAP_UP_TIME = 500;
  60
  61
  62 VncView::VncView(QWidget *parent, const KUrl &url, RemoteView::Quality quality, int listen_port)
  63         : RemoteView(parent),
  64         m_initDone(false),
  65         m_buttonMask(0),
  66         cursor_x(0),
  67         cursor_y(0),
  68         m_repaint(false),
  69         m_quitFlag(false),
  70         m_firstPasswordTry(true),
  71         m_dontSendClipboard(false),
  72         m_horizontalFactor(1.0),
  73         m_verticalFactor(1.0),
  74         m_forceLocalCursor(false),
  75         force_full_repaint(false),
  76         quality(quality),
  77         listen_port(listen_port)
  78 {
  79     m_url = url;
  80     m_host = url.host();
  81     m_port = url.port();
  82
  83         //BlockingQueuedConnection can cause deadlocks when exiting, handled in startQuitting()
  84     connect(&vncThread, SIGNAL(imageUpdated(int, int, int, int)), this, SLOT(updateImage(int, int, int, int)), Qt::BlockingQueuedConnection);
  85     connect(&vncThread, SIGNAL(gotCut(const QString&)), this, SLOT(setCut(const QString&)), Qt::BlockingQueuedConnection);
  86     connect(&vncThread, SIGNAL(passwordRequest()), this, SLOT(requestPassword()), Qt::BlockingQueuedConnection);
  87     connect(&vncThread, SIGNAL(outputErrorMessage(QString)), this, SLOT(outputErrorMessage(QString)));
  88
  89     m_clipboard = QApplication::clipboard();
  90     connect(m_clipboard, SIGNAL(selectionChanged()), this, SLOT(clipboardSelectionChanged()));
  91     connect(m_clipboard, SIGNAL(dataChanged()), this, SLOT(clipboardDataChanged()));
  92
  93     reloadSettings();
  94 }
  95
  96 VncView::~VncView()
  97 {
  98     unpressModifiers();
  99
 100     // Disconnect all signals so that we don't get any more callbacks from the client thread
 101     vncThread.disconnect();
 102
 103     startQuitting();
 104 }
 105
 106 void VncView::forceFullRepaint()
 107 {
 108         force_full_repaint = true;
 109         repaint();
 110 }
 111
 112 bool VncView::eventFilter(QObject *obj, QEvent *event)
 113 {
 114     if (m_viewOnly) {
 115         if (event->type() == QEvent::KeyPress ||
 116                 event->type() == QEvent::KeyRelease ||
 117                 event->type() == QEvent::MouseButtonDblClick ||
 118                 event->type() == QEvent::MouseButtonPress ||
 119                 event->type() == QEvent::MouseButtonRelease ||
 120                 event->type() == QEvent::Wheel ||
 121                 event->type() == QEvent::MouseMove)
 122             return true;
 123     }
 124     return RemoteView::eventFilter(obj, event);
 125 }
 126
 127 QSize VncView::framebufferSize()
 128 {
 129     return m_frame.size();
 130 }
 131
 132 QSize VncView::sizeHint() const
 133 {
 134     return size();
 135 }
 136
 137 QSize VncView::minimumSizeHint() const
 138 {
 139     return size();
 140 }
 141
 142 void VncView::startQuitting()
 143 {
 144     kDebug(5011) << "about to quit";
 145
 146     //const bool connected = status() == RemoteView::Connected;
 147
 148     setStatus(Disconnecting);
 149
 150     m_quitFlag = true;
 151
 152         //if(connected) //remove if things work without it
 153         vncThread.stop();
 154
 155     const bool quitSuccess = vncThread.wait(700);
 156         if(!quitSuccess) {
 157                 //happens when vncThread wants to call a slot via BlockingQueuedConnection,
 158                 //needs an event loop in this thread so execution continues after 'emit'
 159                 QEventLoop loop;
 160                 if(!loop.processEvents())
 161                         kDebug(5011) << "BUG: deadlocked, but no events to deliver?";
 162                 vncThread.wait(700);
 163         }
 164     setStatus(Disconnected);
 165 }
 166
 167 bool VncView::isQuitting()
 168 {
 169     return m_quitFlag;
 170 }
 171
 172 bool VncView::start()
 173 {
 174     vncThread.setHost(m_host);
 175     vncThread.setPort(m_port);
 176         vncThread.setListenPort(listen_port); //if port is != 0, thread will listen for connections
 177     vncThread.setQuality(quality);
 178
 179     // set local cursor on by default because low quality mostly means slow internet connection
 180     if (quality == RemoteView::Low) {
 181         showDotCursor(RemoteView::CursorOn);
 182     }
 183
 184     setStatus(Connecting);
 185
 186     vncThread.start();
 187     return true;
 188 }
 189
 190 bool VncView::supportsScaling() const
 191 {
 192     return true;
 193 }
 194
 195 bool VncView::supportsLocalCursor() const
 196 {
 197     return true;
 198 }
 199
 200 void VncView::requestPassword()
 201 {
 202     kDebug(5011) << "request password";
 203
 204     setStatus(Authenticating);
 205
 206     if (!m_url.password().isNull()) {
 207         vncThread.setPassword(m_url.password());
 208         return;
 209     }
 210
 211         QSettings settings;
 212         settings.beginGroup("hosts");
 213         QString password = settings.value(QString("%1/password").arg(m_host), "").toString();
 214         //check for saved password
 215         if(m_firstPasswordTry and !password.isEmpty()) {
 216                 kDebug(5011) << "Trying saved password";
 217                 m_firstPasswordTry = false;
 218                 vncThread.setPassword(password);
 219                 return;
 220         }
 221         m_firstPasswordTry = false;
 222
 223         //build dialog
 224         QDialog dialog(this);
 225         dialog.setWindowTitle(tr("Password required"));
 226
 227         QLineEdit passwordbox;
 228         passwordbox.setEchoMode(QLineEdit::Password);
 229         passwordbox.setText(password);
 230         QCheckBox save_password(tr("Save Password"));
 231         save_password.setChecked(!password.isEmpty()); //offer to overwrite saved password
 232         QPushButton ok_button(tr("Done"));
 233         ok_button.setMaximumWidth(100);
 234         connect(&ok_button, SIGNAL(clicked()),
 235                 &dialog, SLOT(accept()));
 236
 237         QHBoxLayout layout1;
 238         QVBoxLayout layout2;
 239         layout2.addWidget(&passwordbox);
 240         if(!m_host.isEmpty()) //don't save incomming connections
 241                 layout2.addWidget(&save_password);
 242         layout1.addLayout(&layout2);
 243         layout1.addWidget(&ok_button);
 244         dialog.setLayout(&layout1);
 245
 246         if(dialog.exec()) { //dialog accepted
 247                 password = passwordbox.text();
 248
 249                 if(!m_host.isEmpty() and save_password.isChecked()) {
 250                         kDebug(5011) << "Saving password for host '" << m_host << "'";
 251
 252                         settings.setValue(QString("%1/password").arg(m_host), password);
 253                         settings.sync();
 254                 }
 255
 256                 vncThread.setPassword(password);
 257         } else {
 258                 startQuitting();
 259         }
 260 }
 261
 262 void VncView::outputErrorMessage(const QString &message)
 263 {
 264     if (message == "INTERNAL:APPLE_VNC_COMPATIBILTY") {
 265         setCursor(localDotCursor());
 266         m_forceLocalCursor = true;
 267         return;
 268     }
 269
 270     startQuitting();
 271
 272     emit errorMessage(i18n("VNC failure"), message);
 273 }
 274
 275 void VncView::updateImage(int x, int y, int w, int h)
 276 {
 277         if(!QApplication::focusWidget()) { //no focus, we're probably minimized
 278                 return;
 279         }
 280
 281      //kDebug(5011) << "got update" << width() << height();
 282
 283     m_x = x;
 284     m_y = y;
 285     m_w = w;
 286     m_h = h;
 287
 288     if (m_horizontalFactor != 1.0 || m_verticalFactor != 1.0) {
 289         // If the view is scaled, grow the update rectangle to avoid artifacts
 290         int x_extrapixels = 1.0/m_horizontalFactor + 1;
 291         int y_extrapixels = 1.0/m_verticalFactor + 1;
 292
 293         m_x-=x_extrapixels;
 294         m_y-=y_extrapixels;
 295         m_w+=2*x_extrapixels;
 296         m_h+=2*y_extrapixels;
 297     }
 298
 299     m_frame = vncThread.image();
 300
 301     if (!m_initDone) {
 302         setAttribute(Qt::WA_StaticContents);
 303         setAttribute(Qt::WA_OpaquePaintEvent);
 304         installEventFilter(this);
 305
 306         setCursor(((m_dotCursorState == CursorOn) || m_forceLocalCursor) ? localDotCursor() : Qt::BlankCursor);
 307
 308         setMouseTracking(true); // get mouse events even when there is no mousebutton pressed
 309         setFocusPolicy(Qt::WheelFocus);
 310         setStatus(Connected);
 311 //         emit framebufferSizeChanged(m_frame.width(), m_frame.height());
 312         emit connected();
 313
 314                 resize(width(), height());
 315
 316         m_initDone = true;
 317
 318     }
 319
 320         static QSize old_frame_size = QSize();
 321     if ((y == 0 && x == 0) && (m_frame.size() != old_frame_size)) {
 322             old_frame_size = m_frame.size();
 323         kDebug(5011) << "Updating framebuffer size";
 324                 setZoomLevel();
 325         emit framebufferSizeChanged(m_frame.width(), m_frame.height());
 326     }
 327
 328     m_repaint = true;
 329     repaint(qRound(m_x * m_horizontalFactor), qRound(m_y * m_verticalFactor), qRound(m_w * m_horizontalFactor), qRound(m_h * m_verticalFactor));
 330     m_repaint = false;
 331 }
 332
 333 void VncView::setViewOnly(bool viewOnly)
 334 {
 335     RemoteView::setViewOnly(viewOnly);
 336
 337     m_dontSendClipboard = viewOnly;
 338
 339     if (viewOnly)
 340         setCursor(Qt::ArrowCursor);
 341     else
 342         setCursor(m_dotCursorState == CursorOn ? localDotCursor() : Qt::BlankCursor);
 343 }
 344
 345 void VncView::showDotCursor(DotCursorState state)
 346 {
 347     RemoteView::showDotCursor(state);
 348
 349     setCursor(state == CursorOn ? localDotCursor() : Qt::BlankCursor);
 350 }
 351
 352 //level should be in [0, 100]
 353 void VncView::setZoomLevel(int level)
 354 {
 355         Q_ASSERT(parentWidget() != 0);
 356
 357         if(level == -1) { //handle resize
 358                 resize(m_frame.width()*m_horizontalFactor, m_frame.height()*m_verticalFactor);
 359                 return;
 360         }
 361
 362         double magnification;
 363         if(level == 100) {
 364                 magnification = 2.0;
 365         } else if(level >= 90) {
 366                 magnification = 1.0;
 367         } else {
 368                 const double min_horiz_magnification = double(parentWidget()->width())/m_frame.width();
 369                 const double min_vert_magnification = double(parentWidget()->height())/m_frame.height();
 370                 const double fit_screen_magnification = qMin(min_horiz_magnification, min_vert_magnification);
 371
 372                 //level=90 => magnification=1.0, level=0 => magnification=fit_screen_magnification
 373                 magnification = (level)/90.0*(1.0 - fit_screen_magnification) + fit_screen_magnification;
 374         }
 375
 376         if(magnification < 0                    //remote display smaller than local?
 377         or magnification != magnification)      //nan
 378                 magnification = 1.0;
 379
 380         m_verticalFactor = m_horizontalFactor = magnification;
 381         resize(m_frame.width()*magnification, m_frame.height()*magnification);
 382 }
 383
 384 void VncView::setCut(const QString &text)
 385 {
 386     m_dontSendClipboard = true;
 387     m_clipboard->setText(text, QClipboard::Clipboard);
 388     m_clipboard->setText(text, QClipboard::Selection);
 389     m_dontSendClipboard = false;
 390 }
 391
 392 void VncView::paintEvent(QPaintEvent *event)
 393 {
 394      //kDebug(5011) << "paint event: x: " << m_x << ", y: " << m_y << ", w: " << m_w << ", h: " << m_h;
 395     if (m_frame.isNull() || m_frame.format() == QImage::Format_Invalid) {
 396         kDebug(5011) << "no valid image to paint";
 397         RemoteView::paintEvent(event);
 398         return;
 399     }
 400
 401     event->accept();
 402
 403     QPainter painter(this);
 404
 405         Qt::TransformationMode transformation_mode = Qt::SmoothTransformation;
 406         if( m_horizontalFactor >= 1.0 )
 407                 transformation_mode = Qt::FastTransformation;
 408
 409     if (m_repaint and !force_full_repaint) {
 410 //         kDebug(5011) << "normal repaint";
 411         painter.drawImage(QRect(qRound(m_x*m_horizontalFactor), qRound(m_y*m_verticalFactor),
 412                                 qRound(m_w*m_horizontalFactor), qRound(m_h*m_verticalFactor)),
 413                           m_frame.copy(m_x, m_y, m_w, m_h).scaled(qRound(m_w*m_horizontalFactor),
 414                                                                   qRound(m_h*m_verticalFactor),
 415                                                                   Qt::IgnoreAspectRatio, transformation_mode));
 416     } else {
 417          //kDebug(5011) << "resize repaint";
 418         QRect rect = event->rect();
 419         if (!force_full_repaint and (rect.width() != width() || rect.height() != height())) {
 420           //   kDebug(5011) << "Partial repaint";
 421             const int sx = rect.x()/m_horizontalFactor;
 422             const int sy = rect.y()/m_verticalFactor;
 423             const int sw = rect.width()/m_horizontalFactor;
 424             const int sh = rect.height()/m_verticalFactor;
 425             painter.drawImage(rect,
 426                               m_frame.copy(sx, sy, sw, sh).scaled(rect.width(), rect.height(),
 427                                                                   Qt::IgnoreAspectRatio, transformation_mode));
 428         } else {
 429              kDebug(5011) << "Full repaint" << width() << height() << m_frame.width() << m_frame.height();
 430             painter.drawImage(QRect(0, 0, width(), height()),
 431                               m_frame.scaled(m_frame.width() * m_horizontalFactor, m_frame.height() * m_verticalFactor,
 432                                              Qt::IgnoreAspectRatio, transformation_mode));
 433                         force_full_repaint = false;
 434         }
 435     }
 436
 437         //draw local cursor ourselves, normal mouse pointer doesn't deal with scrolling
 438         if((m_dotCursorState == CursorOn) || m_forceLocalCursor) {
 439 #if QT_VERSION >= 0x040500
 440                 painter.setCompositionMode(QPainter::RasterOp_SourceXorDestination);
 441 #endif
 442                 //rectangle size includes 1px pen width
 443                 painter.drawRect(cursor_x*m_horizontalFactor - CURSOR_SIZE/2, cursor_y*m_verticalFactor - CURSOR_SIZE/2, CURSOR_SIZE-1, CURSOR_SIZE-1);
 444         }
 445
 446     RemoteView::paintEvent(event);
 447 }
 448
 449 void VncView::resizeEvent(QResizeEvent *event)
 450 {
 451     RemoteView::resizeEvent(event);
 452     update();
 453 }
 454
 455 bool VncView::event(QEvent *event)
 456 {
 457     switch (event->type()) {
 458     case QEvent::KeyPress:
 459     case QEvent::KeyRelease:
 460 //         kDebug(5011) << "keyEvent";
 461         keyEventHandler(static_cast<QKeyEvent*>(event));
 462         return true;
 463         break;
 464     case QEvent::MouseButtonDblClick:
 465     case QEvent::MouseButtonPress:
 466     case QEvent::MouseButtonRelease:
 467     case QEvent::MouseMove:
 468 //         kDebug(5011) << "mouseEvent";
 469         mouseEventHandler(static_cast<QMouseEvent*>(event));
 470         return true;
 471         break;
 472     case QEvent::Wheel:
 473 //         kDebug(5011) << "wheelEvent";
 474         wheelEventHandler(static_cast<QWheelEvent*>(event));
 475         return true;
 476         break;
 477     case QEvent::WindowActivate: //input panel may have been closed, prevent IM from interfering with hardware keyboard
 478         setAttribute(Qt::WA_InputMethodEnabled, false);
 479         //fall through
 480     default:
 481         return RemoteView::event(event);
 482     }
 483 }
 484
 485 //call with e == 0 to flush held events
 486 void VncView::mouseEventHandler(QMouseEvent *e)
 487 {
 488         static bool tap_detected = false;
 489         static bool double_tap_detected = false;
 490         static bool tap_drag_detected = false;
 491         static QTime press_time;
 492         static QTime up_time; //used for double clicks/tap&drag, for time after first tap
 493
 494         if(!e) { //flush held taps
 495                 if(tap_detected) {
 496                         m_buttonMask |= 0x01;
 497                         vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 498                         m_buttonMask &= 0xfe;
 499                         vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 500                         tap_detected = false;
 501                 } else if(double_tap_detected and press_time.elapsed() > TAP_PRESS_TIME) { //got tap + another press -> tap & drag
 502                         m_buttonMask |= 0x01;
 503                         vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 504                         double_tap_detected = false;
 505                         tap_drag_detected = true;
 506                 }
 507
 508                 return;
 509         }
 510
 511         if(e->x() < 0 or e->y() < 0) { //QScrollArea tends to send invalid events sometimes...
 512                 e->ignore();
 513                 return;
 514         }
 515
 516         cursor_x = qRound(e->x()/m_horizontalFactor);
 517         cursor_y = qRound(e->y()/m_verticalFactor);
 518         vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask); // plain move event
 519
 520         if(!disable_tapping and e->button() == Qt::LeftButton) { //implement touchpad-like input for left button
 521                 if(e->type() == QEvent::MouseButtonPress or e->type() == QEvent::MouseButtonDblClick) {
 522                         press_time.start();
 523                         if(tap_detected and up_time.elapsed() < DOUBLE_TAP_UP_TIME) {
 524                                 tap_detected = false;
 525                                 double_tap_detected = true;
 526
 527                                 QTimer::singleShot(TAP_PRESS_TIME, this, SLOT(mouseEventHandler()));
 528                         }
 529                 } else if(e->type() == QEvent::MouseButtonRelease) {
 530                         if(tap_drag_detected) {
 531                                 m_buttonMask &= 0xfe;
 532                                 vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 533                                 tap_drag_detected = false;
 534                         } else if(double_tap_detected) { //double click
 535                                 double_tap_detected = false;
 536
 537                                 m_buttonMask |= 0x01;
 538                                 vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 539                                 m_buttonMask &= 0xfe;
 540                                 vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 541                                 m_buttonMask |= 0x01;
 542                                 vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 543                                 m_buttonMask &= 0xfe;
 544                                 vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 545                         } else if(press_time.elapsed() < TAP_PRESS_TIME) { //tap
 546                                 up_time.start();
 547                                 tap_detected = true;
 548                                 QTimer::singleShot(DOUBLE_TAP_UP_TIME, this, SLOT(mouseEventHandler()));
 549                         }
 550
 551                 }
 552         } else { //middle or right button, send directly
 553                 if ((e->type() == QEvent::MouseButtonPress)) {
 554                     if (e->button() & Qt::MidButton)
 555                         m_buttonMask |= 0x02;
 556                     if (e->button() & Qt::RightButton)
 557                         m_buttonMask |= 0x04;
 558                 } else if (e->type() == QEvent::MouseButtonRelease) {
 559                     if (e->button() & Qt::MidButton)
 560                         m_buttonMask &= 0xfd;
 561                     if (e->button() & Qt::RightButton)
 562                         m_buttonMask &= 0xfb;
 563                 }
 564                 vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 565         }
 566
 567         //prevent local cursor artifacts
 568         static int old_cursor_x = cursor_x;
 569         static int old_cursor_y = cursor_y;
 570         if(((m_dotCursorState == CursorOn) || m_forceLocalCursor)
 571         and (cursor_x != old_cursor_x or cursor_y != old_cursor_y)) {
 572                 //clear last position
 573                 repaint(old_cursor_x*m_horizontalFactor - CURSOR_SIZE/2, old_cursor_y*m_verticalFactor - CURSOR_SIZE/2, CURSOR_SIZE, CURSOR_SIZE);
 574                 //and refresh new one
 575                 repaint(cursor_x*m_horizontalFactor - CURSOR_SIZE/2, cursor_y*m_verticalFactor - CURSOR_SIZE/2, CURSOR_SIZE, CURSOR_SIZE);
 576
 577                 old_cursor_x = cursor_x; old_cursor_y = cursor_y;
 578         }
 579 }
 580
 581 void VncView::wheelEventHandler(QWheelEvent *event)
 582 {
 583     int eb = 0;
 584     if (event->delta() < 0)
 585         eb |= 0x10;
 586     else
 587         eb |= 0x8;
 588
 589     const int x = qRound(event->x() / m_horizontalFactor);
 590     const int y = qRound(event->y() / m_verticalFactor);
 591
 592     vncThread.mouseEvent(x, y, eb | m_buttonMask);
 593     vncThread.mouseEvent(x, y, m_buttonMask);
 594 }
 595
 596 void VncView::keyEventHandler(QKeyEvent *e)
 597 {
 598     // strip away autorepeating KeyRelease; see bug #206598
 599     if (e->isAutoRepeat() && (e->type() == QEvent::KeyRelease)) {
 600         return;
 601     }
 602
 603 // parts of this code are based on http://italc.sourcearchive.com/documentation/1.0.9.1/vncview_8cpp-source.html
 604     rfbKeySym k = e->nativeVirtualKey();
 605
 606     // we do not handle Key_Backtab separately as the Shift-modifier
 607     // is already enabled
 608     if (e->key() == Qt::Key_Backtab) {
 609         k = XK_Tab;
 610     }
 611
 612     const bool pressed = (e->type() == QEvent::KeyPress);
 613
 614 #ifdef Q_WS_MAEMO_5
 615     //don't send ISO_Level3_Shift (would break things like Win+0-9)
 616     //also enable IM so symbol key works
 617     if(k == 0xfe03) {
 618             setAttribute(Qt::WA_InputMethodEnabled, pressed);
 619             e->ignore();
 620             return;
 621     }
 622 #endif
 623
 624     // handle modifiers
 625     if (k == XK_Shift_L || k == XK_Control_L || k == XK_Meta_L || k == XK_Alt_L) {
 626         if (pressed) {
 627             m_mods[k] = true;
 628         } else if (m_mods.contains(k)) {
 629             m_mods.remove(k);
 630         } else {
 631             unpressModifiers();
 632         }
 633     }
 634
 635
 636         int current_zoom = -1;
 637         if(e->key() == Qt::Key_F8)
 638                 current_zoom = left_zoom;
 639         else if(e->key() == Qt::Key_F7)
 640                 current_zoom = right_zoom;
 641         else if (k) {
 642         //      kDebug(5011) << "got '" << e->text() << "'.";
 643                 vncThread.keyEvent(k, pressed);
 644         } else {
 645                 kDebug(5011) << "nativeVirtualKey() for '" << e->text() << "' failed.";
 646                 return;
 647         }
 648
 649         if(current_zoom == -1)
 650                 return;
 651
 652         //handle zoom buttons
 653         if(current_zoom == 0) { //left click
 654                 if(pressed)
 655                         m_buttonMask |= 0x01;
 656                 else
 657                         m_buttonMask &= 0xfe;
 658                 vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 659         } else if(current_zoom == 1) { //right click
 660                 if(pressed)
 661                         m_buttonMask |= 0x04;
 662                 else
 663                         m_buttonMask &= 0xfb;
 664                 vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 665         } else if(current_zoom == 2) { //middle click
 666                 if(pressed)
 667                         m_buttonMask |= 0x02;
 668                 else
 669                         m_buttonMask &= 0xfd;
 670                 vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 671         } else if(current_zoom == 3 and pressed) { //wheel up
 672                 int eb = 0x8;
 673                 vncThread.mouseEvent(cursor_x, cursor_y, eb | m_buttonMask);
 674                 vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 675         } else if(current_zoom == 4 and pressed) { //wheel down
 676                 int eb = 0x10;
 677                 vncThread.mouseEvent(cursor_x, cursor_y, eb | m_buttonMask);
 678                 vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 679         } else if(current_zoom == 5) { //page up
 680                 vncThread.keyEvent(0xff55, pressed);
 681         } else if(current_zoom == 6) { //page down
 682                 vncThread.keyEvent(0xff56, pressed);
 683         }
 684 }
 685
 686 void VncView::unpressModifiers()
 687 {
 688     const QList<unsigned int> keys = m_mods.keys();
 689     QList<unsigned int>::const_iterator it = keys.constBegin();
 690     while (it != keys.end()) {
 691         vncThread.keyEvent(*it, false);
 692         it++;
 693     }
 694     m_mods.clear();
 695 }
 696
 697 void VncView::clipboardSelectionChanged()
 698 {
 699     if (m_status != Connected)
 700         return;
 701
 702     if (m_clipboard->ownsSelection() || m_dontSendClipboard)
 703         return;
 704
 705     const QString text = m_clipboard->text(QClipboard::Selection);
 706
 707     vncThread.clientCut(text);
 708 }
 709
 710 void VncView::clipboardDataChanged()
 711 {
 712     if (m_status != Connected)
 713         return;
 714
 715     if (m_clipboard->ownsClipboard() || m_dontSendClipboard)
 716         return;
 717
 718     const QString text = m_clipboard->text(QClipboard::Clipboard);
 719
 720     vncThread.clientCut(text);
 721 }
 722
 723 //fake key events
 724 void VncView::sendKey(Qt::Key key)
 725 {
 726         //convert Qt::Key into x11 keysym
 727         int k = 0;
 728         switch(key) {
 729         case Qt::Key_Escape:
 730                 k = 0xff1b;
 731                 break;
 732         case Qt::Key_Tab:
 733                 k = 0xff09;
 734                 break;
 735         case Qt::Key_PageUp:
 736                 k = 0xff55;
 737                 break;
 738         case Qt::Key_PageDown:
 739                 k = 0xff56;
 740                 break;
 741         case Qt::Key_Return:
 742                 k = 0xff0d;
 743                 break;
 744         case Qt::Key_Insert:
 745                 k = 0xff63;
 746                 break;
 747         case Qt::Key_Delete:
 748                 k = 0xffff;
 749                 break;
 750         case Qt::Key_Home:
 751                 k = 0xff50;
 752                 break;
 753         case Qt::Key_End:
 754                 k = 0xff57;
 755                 break;
 756         case Qt::Key_Backspace:
 757                 k = 0xff08;
 758                 break;
 759         case Qt::Key_F1:
 760         case Qt::Key_F2:
 761         case Qt::Key_F3:
 762         case Qt::Key_F4:
 763         case Qt::Key_F5:
 764         case Qt::Key_F6:
 765         case Qt::Key_F7:
 766         case Qt::Key_F8:
 767         case Qt::Key_F9:
 768         case Qt::Key_F10:
 769         case Qt::Key_F11:
 770         case Qt::Key_F12:
 771                 k = 0xffbe + int(key - Qt::Key_F1);
 772                 break;
 773         case Qt::Key_Pause:
 774                 k = 0xff13;
 775                 break;
 776         case Qt::Key_Print:
 777                 k = 0xff61;
 778                 break;
 779         case Qt::Key_Menu:
 780                 k = 0xff67;
 781                 break;
 782         case Qt::Key_Meta:
 783         case Qt::MetaModifier:
 784                 k = XK_Super_L;
 785                 break;
 786         case Qt::Key_Alt:
 787         case Qt::AltModifier:
 788                 k = XK_Alt_L;
 789                 break;
 790         case Qt::Key_Control:
 791         case Qt::ControlModifier:
 792                 k = XK_Control_L;
 793                 break;
 794         default:
 795                 kDebug(5011) << "sendKey(): Unhandled Qt::Key value " << key;
 796                 return;
 797         }
 798
 799         if (k == XK_Shift_L || k == XK_Control_L || k == XK_Meta_L || k == XK_Alt_L || k == XK_Super_L) {
 800                 if (m_mods.contains(k)) { //release
 801                         m_mods.remove(k);
 802                         vncThread.keyEvent(k, false);
 803                 } else { //press
 804                         m_mods[k] = true;
 805                         vncThread.keyEvent(k, true);
 806                 }
 807         } else { //normal key
 808                 vncThread.keyEvent(k, true);
 809                 vncThread.keyEvent(k, false);
 810         }
 811 }
 812
 813 void VncView::sendKeySequence(QKeySequence keys)
 814 {
 815         Q_ASSERT(keys.count() <= 1); //we can only handle a single combination
 816
 817         //to get at individual key presses, we split 'keys' into its components
 818         QList<int> key_list;
 819         int pos = 0;
 820         while(true) {
 821                 QString k = keys.toString().section('+', pos, pos);
 822                 if(k.isEmpty())
 823                         break;
 824
 825                 //kDebug(5011) << "found key: " << k;
 826                 if(k == "Alt") {
 827                         key_list.append(Qt::Key_Alt);
 828                 } else if(k == "Ctrl") {
 829                         key_list.append(Qt::Key_Control);
 830                 } else if(k == "Meta") {
 831                         key_list.append(Qt::Key_Meta);
 832                 } else {
 833                         key_list.append(QKeySequence(k)[0]);
 834                 }
 835
 836                 pos++;
 837         }
 838
 839         for(int i = 0; i < key_list.count(); i++)
 840                 sendKey(Qt::Key(key_list.at(i)));
 841
 842         //release modifiers (everything before final key)
 843         for(int i = key_list.count()-2; i >= 0; i--)
 844                 sendKey(Qt::Key(key_list.at(i)));
 845 }
 846
 847 void VncView::reloadSettings()
 848 {
 849         QSettings settings;
 850         left_zoom = settings.value("left_zoom", 0).toInt();
 851         right_zoom = settings.value("right_zoom", 1).toInt();
 852         disable_tapping = settings.value("disable_tapping", false).toBool();
 853
 854         bool always_show_local_cursor = settings.value("always_show_local_cursor", false).toBool();
 855         if(always_show_local_cursor)
 856                 showDotCursor(CursorOn);
 857
 858         enableScaling(true);
 859 }
 860
 861 //convert commitString into keyevents
 862 void VncView::inputMethodEvent(QInputMethodEvent *event)
 863 {
 864         //TODO handle replacements
 865         //NOTE for the return key to work Qt needs to enable multiline input, which only works for Q(Plain)TextEdit
 866
 867         //kDebug(5011) << event->commitString() << "|" << event->preeditString() << "|" << event->replacementLength() << "|" << event->replacementStart();
 868         QString letters = event->commitString();
 869         for(int i = 0; i < letters.length(); i++) {
 870                 char k = letters.at(i).toLatin1(); //works with all 'normal' keys, not umlauts.
 871                 if(!k) {
 872                         kDebug(5011) << "unhandled key";
 873                         continue;
 874                 }
 875                 vncThread.keyEvent(k, true);
 876                 vncThread.keyEvent(k, false);
 877         }
 878 }
 879
 880
 881 #include "moc_vncview.cpp"