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 //for mouse button masks
  27 #include "rfb/rfbproto.h"
  28
  29 #include <QtGui>
  30
  31
  32 // Definition of key modifier mask constants
  33 #define KMOD_Alt_R      0x01
  34 #define KMOD_Alt_L      0x02
  35 #define KMOD_Meta_L     0x04
  36 #define KMOD_Control_L  0x08
  37 #define KMOD_Shift_L    0x10
  38
  39 //local cursor width/height in px, should be an odd number
  40 const int CURSOR_SIZE = 7;
  41
  42 //in miliseconds
  43 const int TAP_PRESS_TIME = 180;
  44 const int DOUBLE_TAP_UP_TIME = 500;
  45
  46
  47 VncView::VncView(QWidget *parent, const KUrl &url, RemoteView::Quality quality, int listen_port)
  48         : RemoteView(parent),
  49         m_initDone(false),
  50         m_buttonMask(0),
  51         cursor_x(0),
  52         cursor_y(0),
  53         m_quitFlag(false),
  54         m_firstPasswordTry(true),
  55         m_dontSendClipboard(false),
  56         m_horizontalFactor(1.0),
  57         m_verticalFactor(1.0),
  58         m_forceLocalCursor(false),
  59         quality(quality),
  60         listen_port(listen_port),
  61         transformation_mode(Qt::FastTransformation)
  62 {
  63     m_url = url;
  64     m_host = url.host();
  65     m_port = url.port();
  66
  67         //BlockingQueuedConnection can cause deadlocks when exiting, handled in startQuitting()
  68     connect(&vncThread, SIGNAL(imageUpdated(int, int, int, int)), this, SLOT(updateImage(int, int, int, int)), Qt::BlockingQueuedConnection);
  69     connect(&vncThread, SIGNAL(gotCut(const QString&)), this, SLOT(setCut(const QString&)), Qt::BlockingQueuedConnection);
  70     connect(&vncThread, SIGNAL(passwordRequest()), this, SLOT(requestPassword()), Qt::BlockingQueuedConnection);
  71     connect(&vncThread, SIGNAL(outputErrorMessage(QString)), this, SLOT(outputErrorMessage(QString)));
  72
  73         //don't miss early connection failures
  74         connect(&vncThread, SIGNAL(finished()), this, SLOT(startQuitting()));
  75
  76     m_clipboard = QApplication::clipboard();
  77     connect(m_clipboard, SIGNAL(selectionChanged()), this, SLOT(clipboardSelectionChanged()));
  78     connect(m_clipboard, SIGNAL(dataChanged()), this, SLOT(clipboardDataChanged()));
  79
  80     reloadSettings();
  81 }
  82
  83 VncView::~VncView()
  84 {
  85     unpressModifiers();
  86
  87     // Disconnect all signals so that we don't get any more callbacks from the client thread
  88     vncThread.disconnect();
  89
  90     startQuitting();
  91 }
  92
  93 bool VncView::eventFilter(QObject *obj, QEvent *event)
  94 {
  95     if (m_viewOnly) {
  96         if (event->type() == QEvent::KeyPress ||
  97                 event->type() == QEvent::KeyRelease ||
  98                 event->type() == QEvent::MouseButtonDblClick ||
  99                 event->type() == QEvent::MouseButtonPress ||
 100                 event->type() == QEvent::MouseButtonRelease ||
 101                 event->type() == QEvent::Wheel ||
 102                 event->type() == QEvent::MouseMove) {
 103
 104                         event->ignore();
 105             return true;
 106                 }
 107     }
 108
 109     return RemoteView::eventFilter(obj, event);
 110 }
 111
 112 QSize VncView::framebufferSize()
 113 {
 114     return m_frame.size();
 115 }
 116
 117 QSize VncView::sizeHint() const
 118 {
 119     return size();
 120 }
 121
 122 QSize VncView::minimumSizeHint() const
 123 {
 124     return size();
 125 }
 126
 127 void VncView::startQuitting()
 128 {
 129         if(isQuitting())
 130                 return;
 131
 132     kDebug(5011) << "about to quit";
 133
 134     setStatus(Disconnecting);
 135
 136     m_quitFlag = true;
 137
 138         vncThread.stop();
 139
 140     const bool quitSuccess = vncThread.wait(700);
 141         if(!quitSuccess) {
 142                 //happens when vncThread wants to call a slot via BlockingQueuedConnection,
 143                 //needs an event loop in this thread so execution continues after 'emit'
 144                 QEventLoop loop;
 145                 if(!loop.processEvents())
 146                         kDebug(5011) << "BUG: deadlocked, but no events to deliver?";
 147                 vncThread.wait(700);
 148         }
 149     setStatus(Disconnected);
 150 }
 151
 152 bool VncView::isQuitting()
 153 {
 154     return m_quitFlag;
 155 }
 156
 157 bool VncView::start()
 158 {
 159     vncThread.setHost(m_host);
 160     vncThread.setPort(m_port);
 161         vncThread.setListenPort(listen_port); //if port is != 0, thread will listen for connections
 162     vncThread.setQuality(quality);
 163
 164     // set local cursor on by default because low quality mostly means slow internet connection
 165     if (quality == RemoteView::Low) {
 166         showDotCursor(RemoteView::CursorOn);
 167     }
 168
 169     setStatus(Connecting);
 170
 171     vncThread.start();
 172     return true;
 173 }
 174
 175 bool VncView::supportsScaling() const
 176 {
 177     return true;
 178 }
 179
 180 bool VncView::supportsLocalCursor() const
 181 {
 182     return true;
 183 }
 184
 185 void VncView::requestPassword()
 186 {
 187     kDebug(5011) << "request password";
 188
 189     setStatus(Authenticating);
 190
 191     if (!m_url.password().isNull()) {
 192         vncThread.setPassword(m_url.password());
 193         return;
 194     }
 195
 196         QSettings settings;
 197         settings.beginGroup("hosts");
 198
 199         //check for saved password
 200         QString password = settings.value(QString("%1/password").arg(m_host), "").toString();
 201         if(m_firstPasswordTry and !password.isEmpty()) {
 202                 kDebug(5011) << "Trying saved password";
 203                 m_firstPasswordTry = false;
 204                 vncThread.setPassword(password);
 205                 return;
 206         }
 207         m_firstPasswordTry = false;
 208
 209         //build dialog
 210         QDialog dialog(this);
 211         dialog.setWindowTitle(tr("Password required"));
 212
 213         QLineEdit passwordbox;
 214         passwordbox.setEchoMode(QLineEdit::Password);
 215         passwordbox.setText(password);
 216         QCheckBox save_password(tr("Save Password"));
 217         save_password.setChecked(!password.isEmpty()); //offer to overwrite saved password
 218         QPushButton ok_button(tr("Done"));
 219         ok_button.setMaximumWidth(100);
 220         connect(&ok_button, SIGNAL(clicked()),
 221                 &dialog, SLOT(accept()));
 222
 223         QHBoxLayout layout1;
 224         QVBoxLayout layout2;
 225         layout2.addWidget(&passwordbox);
 226         if(!m_host.isEmpty()) //don't save incoming connections
 227                 layout2.addWidget(&save_password);
 228         layout1.addLayout(&layout2);
 229         layout1.addWidget(&ok_button);
 230         dialog.setLayout(&layout1);
 231
 232         if(dialog.exec()) { //dialog accepted
 233                 password = passwordbox.text();
 234
 235                 if(!m_host.isEmpty() and save_password.isChecked()) {
 236                         kDebug(5011) << "Saving password for host '" << m_host << "'";
 237
 238                         settings.setValue(QString("%1/password").arg(m_host), password);
 239                         settings.sync();
 240                 }
 241
 242                 vncThread.setPassword(password);
 243         } else {
 244                 vncThread.setPassword(QString()); //null string to exit
 245         }
 246 }
 247
 248 void VncView::outputErrorMessage(const QString &message)
 249 {
 250     if (message == "INTERNAL:APPLE_VNC_COMPATIBILTY") {
 251         setCursor(localDotCursor());
 252         m_forceLocalCursor = true;
 253         return;
 254     }
 255
 256     startQuitting();
 257
 258     emit errorMessage(i18n("VNC failure"), message);
 259 }
 260
 261 void VncView::updateImage(int x, int y, int w, int h)
 262 {
 263         if(!QApplication::focusWidget()) { //no focus, we're probably minimized
 264                 return;
 265         }
 266
 267      //kDebug(5011) << "got update" << width() << height();
 268
 269     m_x = x;
 270     m_y = y;
 271     m_w = w;
 272     m_h = h;
 273
 274     if (m_horizontalFactor != 1.0 || m_verticalFactor != 1.0) {
 275         // If the view is scaled, grow the update rectangle to avoid artifacts
 276         int x_extrapixels = 1.0/m_horizontalFactor + 1;
 277         int y_extrapixels = 1.0/m_verticalFactor + 1;
 278
 279         m_x-=x_extrapixels;
 280         m_y-=y_extrapixels;
 281         m_w+=2*x_extrapixels;
 282         m_h+=2*y_extrapixels;
 283     }
 284
 285     m_frame = vncThread.image();
 286
 287     if (!m_initDone) { //TODO this seems an odd place for initialization
 288         setAttribute(Qt::WA_StaticContents);
 289         setAttribute(Qt::WA_OpaquePaintEvent);
 290         installEventFilter(this);
 291
 292         setCursor(((m_dotCursorState == CursorOn) || m_forceLocalCursor) ? localDotCursor() : Qt::BlankCursor);
 293
 294         setMouseTracking(true); // get mouse events even when there is no mousebutton pressed
 295         setFocusPolicy(Qt::WheelFocus);
 296         setStatus(Connected);
 297         emit connected();
 298
 299                 resize(width(), height());
 300
 301         m_initDone = true;
 302
 303     }
 304
 305         static QSize old_frame_size = QSize();
 306     if ((y == 0 && x == 0) && (m_frame.size() != old_frame_size)) {
 307             old_frame_size = m_frame.size();
 308         kDebug(5011) << "Updating framebuffer size";
 309                 setZoomLevel();
 310                 useFastTransformations(false);
 311
 312         emit framebufferSizeChanged(m_frame.width(), m_frame.height());
 313     }
 314
 315     repaint(qRound(m_x * m_horizontalFactor), qRound(m_y * m_verticalFactor), qRound(m_w * m_horizontalFactor), qRound(m_h * m_verticalFactor));
 316 }
 317
 318 void VncView::setViewOnly(bool viewOnly)
 319 {
 320     RemoteView::setViewOnly(viewOnly);
 321
 322     m_dontSendClipboard = viewOnly;
 323
 324     if (viewOnly) {
 325                 showDotCursor(CursorOff);
 326         setCursor(Qt::ArrowCursor);
 327     } else {
 328         setCursor(m_dotCursorState == CursorOn ? localDotCursor() : Qt::BlankCursor);
 329         }
 330 }
 331
 332 void VncView::showDotCursor(DotCursorState state)
 333 {
 334     RemoteView::showDotCursor(state);
 335
 336     setCursor(state == CursorOn ? localDotCursor() : Qt::BlankCursor);
 337 }
 338
 339 //level should be in [0, 100]
 340 void VncView::setZoomLevel(int level)
 341 {
 342         Q_ASSERT(parentWidget() != 0);
 343
 344         if(level == -1) { //handle resize
 345                 resize(m_frame.width()*m_horizontalFactor, m_frame.height()*m_verticalFactor);
 346                 return;
 347         }
 348
 349         double magnification;
 350         if(level == 100) {
 351                 magnification = 2.0;
 352         } else if(level >= 90) {
 353                 magnification = 1.0;
 354         } else {
 355                 const double min_horiz_magnification = double(parentWidget()->width())/m_frame.width();
 356                 const double min_vert_magnification = double(parentWidget()->height())/m_frame.height();
 357                 const double fit_screen_magnification = qMin(min_horiz_magnification, min_vert_magnification);
 358
 359                 //level=90 => magnification=1.0, level=0 => magnification=fit_screen_magnification
 360                 magnification = (level)/90.0*(1.0 - fit_screen_magnification) + fit_screen_magnification;
 361         }
 362
 363         if(magnification < 0                    //remote display smaller than local?
 364         or magnification != magnification)      //nan
 365                 magnification = 1.0;
 366
 367         m_verticalFactor = m_horizontalFactor = magnification;
 368         resize(m_frame.width()*magnification, m_frame.height()*magnification);
 369 }
 370
 371 void VncView::setCut(const QString &text)
 372 {
 373     m_dontSendClipboard = true;
 374     m_clipboard->setText(text, QClipboard::Clipboard);
 375     m_clipboard->setText(text, QClipboard::Selection);
 376     m_dontSendClipboard = false;
 377 }
 378
 379 void VncView::paintEvent(QPaintEvent *event)
 380 {
 381     if (m_frame.isNull() || m_frame.format() == QImage::Format_Invalid) {
 382         //no valid image to paint
 383         RemoteView::paintEvent(event);
 384         return;
 385     }
 386
 387     event->accept();
 388
 389         const QRect update_rect = event->rect();
 390     QPainter painter(this);
 391         if (update_rect != rect()) {
 392                 // kDebug(5011) << "Partial repaint";
 393                 const int sx = qRound(update_rect.x()/m_horizontalFactor);
 394                 const int sy = qRound(update_rect.y()/m_verticalFactor);
 395                 const int sw = qRound(update_rect.width()/m_horizontalFactor);
 396                 const int sh = qRound(update_rect.height()/m_verticalFactor);
 397
 398                 painter.drawImage(update_rect,
 399                           m_frame.copy(sx, sy, sw, sh)
 400                           .scaled(update_rect.size(), Qt::IgnoreAspectRatio, transformation_mode));
 401         } else {
 402                 //kDebug(5011) << "Full repaint" << width() << height() << m_frame.width() << m_frame.height();
 403
 404                 painter.drawImage(rect(),
 405                         m_frame.scaled(size(), Qt::IgnoreAspectRatio, transformation_mode));
 406     }
 407
 408         //draw local cursor ourselves, normal mouse pointer doesn't deal with scrolling
 409         if((m_dotCursorState == CursorOn) || m_forceLocalCursor) {
 410 #if QT_VERSION >= 0x040500
 411                 painter.setCompositionMode(QPainter::RasterOp_SourceXorDestination);
 412 #endif
 413                 //rectangle size includes 1px pen width
 414                 painter.drawRect(cursor_x*m_horizontalFactor - CURSOR_SIZE/2, cursor_y*m_verticalFactor - CURSOR_SIZE/2, CURSOR_SIZE-1, CURSOR_SIZE-1);
 415         }
 416
 417     RemoteView::paintEvent(event);
 418 }
 419
 420 void VncView::resizeEvent(QResizeEvent *event)
 421 {
 422     RemoteView::resizeEvent(event);
 423     update();
 424 }
 425
 426 bool VncView::event(QEvent *event)
 427 {
 428         switch (event->type()) {
 429         case QEvent::KeyPress:
 430         case QEvent::KeyRelease:
 431                 keyEventHandler(static_cast<QKeyEvent*>(event));
 432                 return true;
 433
 434         case QEvent::MouseButtonDblClick:
 435         case QEvent::MouseButtonPress:
 436         case QEvent::MouseButtonRelease:
 437         case QEvent::MouseMove:
 438                 mouseEventHandler(static_cast<QMouseEvent*>(event));
 439                 return true;
 440
 441         case QEvent::Wheel:
 442                 wheelEventHandler(static_cast<QWheelEvent*>(event));
 443                 return true;
 444
 445         case QEvent::WindowActivate: //input panel may have been closed, prevent IM from interfering with hardware keyboard
 446                 setAttribute(Qt::WA_InputMethodEnabled, false);
 447                 //fall through
 448         default:
 449                 return RemoteView::event(event);
 450         }
 451 }
 452
 453 //call with e == 0 to flush held events
 454 void VncView::mouseEventHandler(QMouseEvent *e)
 455 {
 456         static bool tap_detected = false;
 457         static bool double_tap_detected = false;
 458         static bool tap_drag_detected = false;
 459         static QTime press_time;
 460         static QTime up_time; //used for double clicks/tap&drag, for time after first tap
 461
 462
 463         if(!e) { //flush held taps
 464                 if(tap_detected) {
 465                         m_buttonMask |= rfbButton1Mask;
 466                         vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 467                         m_buttonMask &= ~rfbButton1Mask;
 468                         vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 469                         tap_detected = false;
 470                 } else if(double_tap_detected and press_time.elapsed() > TAP_PRESS_TIME) { //got tap + another press -> tap & drag
 471                         m_buttonMask |= rfbButton1Mask;
 472                         vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 473                         double_tap_detected = false;
 474                         tap_drag_detected = true;
 475                 }
 476
 477                 return;
 478         }
 479
 480         if(e->x() < 0 or e->y() < 0) { //QScrollArea tends to send invalid events sometimes...
 481                 e->ignore();
 482                 return;
 483         }
 484
 485         cursor_x = qRound(e->x()/m_horizontalFactor);
 486         cursor_y = qRound(e->y()/m_verticalFactor);
 487         vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask); // plain move event
 488
 489         if(!disable_tapping and e->button() == Qt::LeftButton) { //implement touchpad-like input for left button
 490                 if(e->type() == QEvent::MouseButtonPress or e->type() == QEvent::MouseButtonDblClick) {
 491                         press_time.start();
 492                         if(tap_detected and up_time.elapsed() < DOUBLE_TAP_UP_TIME) {
 493                                 tap_detected = false;
 494                                 double_tap_detected = true;
 495
 496                                 QTimer::singleShot(TAP_PRESS_TIME, this, SLOT(mouseEventHandler()));
 497                         }
 498                 } else if(e->type() == QEvent::MouseButtonRelease) {
 499                         if(tap_drag_detected) { //end tap & drag
 500                                 m_buttonMask &= ~rfbButton1Mask;
 501                                 vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 502                                 tap_drag_detected = false;
 503                         } else if(double_tap_detected) { //double click
 504                                 double_tap_detected = false;
 505
 506                                 m_buttonMask |= rfbButton1Mask;
 507                                 vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 508                                 m_buttonMask &= ~rfbButton1Mask;
 509                                 vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 510                                 m_buttonMask |= rfbButton1Mask;
 511                                 vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 512                                 m_buttonMask &= ~rfbButton1Mask;
 513                                 vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 514                         } else if(press_time.elapsed() < TAP_PRESS_TIME) { //tap
 515                                 up_time.start();
 516                                 tap_detected = true;
 517                                 QTimer::singleShot(DOUBLE_TAP_UP_TIME, this, SLOT(mouseEventHandler()));
 518                         }
 519
 520                 }
 521         } else { //middle or right button, send directly
 522                 if ((e->type() == QEvent::MouseButtonPress)) {
 523                     if (e->button() & Qt::MidButton)
 524                                 m_buttonMask |= rfbButton2Mask;
 525                     if (e->button() & Qt::RightButton)
 526                                 m_buttonMask |= rfbButton3Mask;
 527                 } else if (e->type() == QEvent::MouseButtonRelease) {
 528                     if (e->button() & Qt::MidButton)
 529                                 m_buttonMask &= ~rfbButton2Mask;
 530                     if (e->button() & Qt::RightButton)
 531                                 m_buttonMask &= ~rfbButton3Mask;
 532                 }
 533                 vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 534         }
 535
 536         //prevent local cursor artifacts
 537         static int old_cursor_x = cursor_x;
 538         static int old_cursor_y = cursor_y;
 539         if(((m_dotCursorState == CursorOn) || m_forceLocalCursor)
 540         and (cursor_x != old_cursor_x or cursor_y != old_cursor_y)) {
 541                 //clear last position
 542                 repaint(old_cursor_x*m_horizontalFactor - CURSOR_SIZE/2, old_cursor_y*m_verticalFactor - CURSOR_SIZE/2, CURSOR_SIZE, CURSOR_SIZE);
 543                 //and refresh new one
 544                 repaint(cursor_x*m_horizontalFactor - CURSOR_SIZE/2, cursor_y*m_verticalFactor - CURSOR_SIZE/2, CURSOR_SIZE, CURSOR_SIZE);
 545
 546                 old_cursor_x = cursor_x; old_cursor_y = cursor_y;
 547         }
 548 }
 549
 550 void VncView::wheelEventHandler(QWheelEvent *event)
 551 {
 552     int eb = 0;
 553     if (event->delta() < 0)
 554         eb |= rfbWheelDownMask;
 555     else
 556         eb |= rfbWheelUpMask;
 557
 558     const int x = qRound(event->x() / m_horizontalFactor);
 559     const int y = qRound(event->y() / m_verticalFactor);
 560
 561     vncThread.mouseEvent(x, y, m_buttonMask | eb);
 562     vncThread.mouseEvent(x, y, m_buttonMask);
 563 }
 564
 565 void VncView::keyEventHandler(QKeyEvent *e)
 566 {
 567     // strip away autorepeating KeyRelease; see bug #206598
 568     if (e->isAutoRepeat() && (e->type() == QEvent::KeyRelease)) {
 569         return;
 570     }
 571
 572 // parts of this code are based on http://italc.sourcearchive.com/documentation/1.0.9.1/vncview_8cpp-source.html
 573     rfbKeySym k = e->nativeVirtualKey();
 574
 575     // we do not handle Key_Backtab separately as the Shift-modifier
 576     // is already enabled
 577     if (e->key() == Qt::Key_Backtab) {
 578         k = XK_Tab;
 579     }
 580
 581     const bool pressed = (e->type() == QEvent::KeyPress);
 582
 583 #ifdef Q_WS_MAEMO_5
 584     //don't send ISO_Level3_Shift (would break things like Win+0-9)
 585     //also enable IM so symbol key works
 586     if(k == 0xfe03) {
 587             setAttribute(Qt::WA_InputMethodEnabled, pressed);
 588             e->ignore();
 589             return;
 590     }
 591 #endif
 592
 593     // handle modifiers
 594     if (k == XK_Shift_L || k == XK_Control_L || k == XK_Meta_L || k == XK_Alt_L) {
 595         if (pressed) {
 596             m_mods[k] = true;
 597         } else if (m_mods.contains(k)) {
 598             m_mods.remove(k);
 599         } else {
 600             unpressModifiers();
 601         }
 602     }
 603
 604
 605         int current_zoom = -1;
 606         if(e->key() == Qt::Key_F8)
 607                 current_zoom = left_zoom;
 608         else if(e->key() == Qt::Key_F7)
 609                 current_zoom = right_zoom;
 610         else if (k) {
 611                 // kDebug(5011) << "got '" << e->text() << "'.";
 612                 vncThread.keyEvent(k, pressed);
 613         } else {
 614                 kDebug(5011) << "nativeVirtualKey() for '" << e->text() << "' failed.";
 615                 return;
 616         }
 617
 618         if(current_zoom == -1)
 619                 return;
 620
 621         //handle zoom buttons
 622         if(current_zoom == 0) { //left click
 623                 if(pressed)
 624                         m_buttonMask |= rfbButton1Mask;
 625                 else
 626                         m_buttonMask &= ~rfbButton1Mask;
 627                 vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 628         } else if(current_zoom == 1) { //right click
 629                 if(pressed)
 630                         m_buttonMask |= rfbButton3Mask;
 631                 else
 632                         m_buttonMask &= ~rfbButton3Mask;
 633                 vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 634         } else if(current_zoom == 2) { //middle click
 635                 if(pressed)
 636                         m_buttonMask |= rfbButton2Mask;
 637                 else
 638                         m_buttonMask &= ~rfbButton2Mask;
 639                 vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 640         } else if(current_zoom == 3 and pressed) { //wheel up
 641                 vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask | rfbWheelUpMask);
 642                 vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 643         } else if(current_zoom == 4 and pressed) { //wheel down
 644                 vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask | rfbWheelDownMask);
 645                 vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 646         } else if(current_zoom == 5) { //page up
 647                 vncThread.keyEvent(0xff55, pressed);
 648         } else if(current_zoom == 6) { //page down
 649                 vncThread.keyEvent(0xff56, pressed);
 650         }
 651 }
 652
 653 void VncView::unpressModifiers()
 654 {
 655     const QList<unsigned int> keys = m_mods.keys();
 656     QList<unsigned int>::const_iterator it = keys.constBegin();
 657     while (it != keys.end()) {
 658         vncThread.keyEvent(*it, false);
 659         it++;
 660     }
 661     m_mods.clear();
 662 }
 663
 664 void VncView::clipboardSelectionChanged()
 665 {
 666     if (m_status != Connected)
 667         return;
 668
 669     if (m_clipboard->ownsSelection() || m_dontSendClipboard)
 670         return;
 671
 672     const QString text = m_clipboard->text(QClipboard::Selection);
 673
 674     vncThread.clientCut(text);
 675 }
 676
 677 void VncView::clipboardDataChanged()
 678 {
 679     if (m_status != Connected)
 680         return;
 681
 682     if (m_clipboard->ownsClipboard() || m_dontSendClipboard)
 683         return;
 684
 685     const QString text = m_clipboard->text(QClipboard::Clipboard);
 686
 687     vncThread.clientCut(text);
 688 }
 689
 690 //fake key events
 691 void VncView::sendKey(Qt::Key key)
 692 {
 693         //convert Qt::Key into x11 keysym
 694         int k = 0;
 695         switch(key) {
 696         case Qt::Key_Escape:
 697                 k = 0xff1b;
 698                 break;
 699         case Qt::Key_Tab:
 700                 k = 0xff09;
 701                 break;
 702         case Qt::Key_PageUp:
 703                 k = 0xff55;
 704                 break;
 705         case Qt::Key_PageDown:
 706                 k = 0xff56;
 707                 break;
 708         case Qt::Key_Return:
 709                 k = 0xff0d;
 710                 break;
 711         case Qt::Key_Insert:
 712                 k = 0xff63;
 713                 break;
 714         case Qt::Key_Delete:
 715                 k = 0xffff;
 716                 break;
 717         case Qt::Key_Home:
 718                 k = 0xff50;
 719                 break;
 720         case Qt::Key_End:
 721                 k = 0xff57;
 722                 break;
 723         case Qt::Key_Backspace:
 724                 k = 0xff08;
 725                 break;
 726         case Qt::Key_F1:
 727         case Qt::Key_F2:
 728         case Qt::Key_F3:
 729         case Qt::Key_F4:
 730         case Qt::Key_F5:
 731         case Qt::Key_F6:
 732         case Qt::Key_F7:
 733         case Qt::Key_F8:
 734         case Qt::Key_F9:
 735         case Qt::Key_F10:
 736         case Qt::Key_F11:
 737         case Qt::Key_F12:
 738                 k = 0xffbe + int(key - Qt::Key_F1);
 739                 break;
 740         case Qt::Key_Pause:
 741                 k = 0xff13;
 742                 break;
 743         case Qt::Key_Print:
 744                 k = 0xff61;
 745                 break;
 746         case Qt::Key_Menu:
 747                 k = 0xff67;
 748                 break;
 749         case Qt::Key_Meta:
 750         case Qt::MetaModifier:
 751                 k = XK_Super_L;
 752                 break;
 753         case Qt::Key_Alt:
 754         case Qt::AltModifier:
 755                 k = XK_Alt_L;
 756                 break;
 757         case Qt::Key_Control:
 758         case Qt::ControlModifier:
 759                 k = XK_Control_L;
 760                 break;
 761         default:
 762                 kDebug(5011) << "sendKey(): Unhandled Qt::Key value " << key;
 763                 return;
 764         }
 765
 766         if (k == XK_Shift_L || k == XK_Control_L || k == XK_Meta_L || k == XK_Alt_L || k == XK_Super_L) {
 767                 if (m_mods.contains(k)) { //release
 768                         m_mods.remove(k);
 769                         vncThread.keyEvent(k, false);
 770                 } else { //press
 771                         m_mods[k] = true;
 772                         vncThread.keyEvent(k, true);
 773                 }
 774         } else { //normal key
 775                 vncThread.keyEvent(k, true);
 776                 vncThread.keyEvent(k, false);
 777         }
 778 }
 779
 780 void VncView::sendKeySequence(QKeySequence keys)
 781 {
 782         Q_ASSERT(keys.count() <= 1); //we can only handle a single combination
 783
 784         //to get at individual key presses, we split 'keys' into its components
 785         QList<int> key_list;
 786         int pos = 0;
 787         while(true) {
 788                 QString k = keys.toString().section('+', pos, pos);
 789                 if(k.isEmpty())
 790                         break;
 791
 792                 //kDebug(5011) << "found key: " << k;
 793                 if(k == "Alt") {
 794                         key_list.append(Qt::Key_Alt);
 795                 } else if(k == "Ctrl") {
 796                         key_list.append(Qt::Key_Control);
 797                 } else if(k == "Meta") {
 798                         key_list.append(Qt::Key_Meta);
 799                 } else {
 800                         key_list.append(QKeySequence(k)[0]);
 801                 }
 802
 803                 pos++;
 804         }
 805
 806         for(int i = 0; i < key_list.count(); i++)
 807                 sendKey(Qt::Key(key_list.at(i)));
 808
 809         //release modifiers (everything before final key)
 810         for(int i = key_list.count()-2; i >= 0; i--)
 811                 sendKey(Qt::Key(key_list.at(i)));
 812 }
 813
 814 void VncView::reloadSettings()
 815 {
 816         QSettings settings;
 817         left_zoom = settings.value("left_zoom", 0).toInt();
 818         right_zoom = settings.value("right_zoom", 1).toInt();
 819         disable_tapping = settings.value("disable_tapping", false).toBool();
 820
 821         bool always_show_local_cursor = settings.value("always_show_local_cursor", false).toBool();
 822         if(always_show_local_cursor)
 823                 showDotCursor(CursorOn);
 824
 825         enableScaling(true);
 826 }
 827
 828 //convert commitString into keyevents
 829 void VncView::inputMethodEvent(QInputMethodEvent *event)
 830 {
 831         //TODO handle replacements
 832         //NOTE for the return key to work Qt needs to enable multiline input, which only works for Q(Plain)TextEdit
 833
 834         //kDebug(5011) << event->commitString() << "|" << event->preeditString() << "|" << event->replacementLength() << "|" << event->replacementStart();
 835         QString letters = event->commitString();
 836         for(int i = 0; i < letters.length(); i++) {
 837                 char k = letters.at(i).toLatin1();
 838                 if(!k) {
 839                         kDebug(5011) << "unhandled key";
 840                         continue;
 841                 }
 842                 vncThread.keyEvent(k, true);
 843                 vncThread.keyEvent(k, false);
 844         }
 845 }
 846
 847 void VncView::useFastTransformations(bool enabled)
 848 {
 849         if(enabled or zoomFactor() >= 1.0) {
 850                 transformation_mode = Qt::FastTransformation;
 851         } else {
 852                 transformation_mode = Qt::SmoothTransformation;
 853                 update();
 854         }
 855 }