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