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 VncView::VncView(QWidget *parent, const KUrl &url, RemoteView::Quality quality)
  59         : RemoteView(parent),
  60         m_initDone(false),
  61         m_buttonMask(0),
  62         cursor_x(0),
  63         cursor_y(0),
  64         m_repaint(false),
  65         m_quitFlag(false),
  66         m_firstPasswordTry(true),
  67         m_dontSendClipboard(false),
  68         m_horizontalFactor(1.0),
  69         m_verticalFactor(1.0),
  70         m_forceLocalCursor(false),
  71         force_full_repaint(false),
  72         quality(quality)
  73 {
  74     m_url = url;
  75     m_host = url.host();
  76     m_port = url.port();
  77
  78     connect(&vncThread, SIGNAL(imageUpdated(int, int, int, int)), this, SLOT(updateImage(int, int, int, int)), Qt::BlockingQueuedConnection);
  79     connect(&vncThread, SIGNAL(gotCut(const QString&)), this, SLOT(setCut(const QString&)), Qt::BlockingQueuedConnection);
  80     connect(&vncThread, SIGNAL(passwordRequest()), this, SLOT(requestPassword()), Qt::BlockingQueuedConnection);
  81     connect(&vncThread, SIGNAL(outputErrorMessage(QString)), this, SLOT(outputErrorMessage(QString)));
  82
  83     m_clipboard = QApplication::clipboard();
  84     connect(m_clipboard, SIGNAL(selectionChanged()), this, SLOT(clipboardSelectionChanged()));
  85     connect(m_clipboard, SIGNAL(dataChanged()), this, SLOT(clipboardDataChanged()));
  86
  87     reloadSettings();
  88 }
  89
  90 VncView::~VncView()
  91 {
  92     unpressModifiers();
  93
  94     // Disconnect all signals so that we don't get any more callbacks from the client thread
  95     vncThread.disconnect();
  96
  97     startQuitting();
  98 }
  99
 100 void VncView::forceFullRepaint()
 101 {
 102         force_full_repaint = true;
 103         repaint();
 104 }
 105
 106 bool VncView::eventFilter(QObject *obj, QEvent *event)
 107 {
 108     if (m_viewOnly) {
 109         if (event->type() == QEvent::KeyPress ||
 110                 event->type() == QEvent::KeyRelease ||
 111                 event->type() == QEvent::MouseButtonDblClick ||
 112                 event->type() == QEvent::MouseButtonPress ||
 113                 event->type() == QEvent::MouseButtonRelease ||
 114                 event->type() == QEvent::Wheel ||
 115                 event->type() == QEvent::MouseMove)
 116             return true;
 117     }
 118     return RemoteView::eventFilter(obj, event);
 119 }
 120
 121 QSize VncView::framebufferSize()
 122 {
 123     return m_frame.size();
 124 }
 125
 126 QSize VncView::sizeHint() const
 127 {
 128     return size();
 129 }
 130
 131 QSize VncView::minimumSizeHint() const
 132 {
 133     return size();
 134 }
 135
 136 void VncView::scaleResize(int w, int h)
 137 {
 138     RemoteView::scaleResize(w, h);
 139
 140     kDebug(5011) << "scaleResize(): " <<w << h;
 141     if (m_scale) {
 142         m_verticalFactor = (qreal) h / m_frame.height();
 143         m_horizontalFactor = (qreal) w / m_frame.width();
 144
 145         m_verticalFactor = m_horizontalFactor = qMin(m_verticalFactor, m_horizontalFactor);
 146
 147         const qreal newW = m_frame.width() * m_horizontalFactor;
 148         const qreal newH = m_frame.height() * m_verticalFactor;
 149         /*
 150         setMaximumSize(newW, newH); //This is a hack to force Qt to center the view in the scroll area
 151         //also causes the widget's size to flicker
 152         */
 153         resize(newW, newH);
 154     }
 155 }
 156
 157
 158 void VncView::startQuitting()
 159 {
 160     kDebug(5011) << "about to quit";
 161
 162     const bool connected = status() == RemoteView::Connected;
 163
 164     setStatus(Disconnecting);
 165
 166     m_quitFlag = true;
 167
 168     if (connected) {
 169         vncThread.stop();
 170     }
 171
 172     vncThread.quit();
 173
 174     const bool quitSuccess = vncThread.wait(500);
 175
 176     kDebug(5011) << "startQuitting(): Quit VNC thread success:" << quitSuccess;
 177
 178     setStatus(Disconnected);
 179 }
 180
 181 bool VncView::isQuitting()
 182 {
 183     return m_quitFlag;
 184 }
 185
 186 bool VncView::start()
 187 {
 188     vncThread.setHost(m_host);
 189     vncThread.setPort(m_port);
 190
 191     vncThread.setQuality(quality);
 192
 193     // set local cursor on by default because low quality mostly means slow internet connection
 194     if (quality == RemoteView::Low) {
 195         showDotCursor(RemoteView::CursorOn);
 196     }
 197
 198     setStatus(Connecting);
 199
 200     vncThread.start();
 201     return true;
 202 }
 203
 204 bool VncView::supportsScaling() const
 205 {
 206     return true;
 207 }
 208
 209 bool VncView::supportsLocalCursor() const
 210 {
 211     return true;
 212 }
 213
 214 void VncView::requestPassword()
 215 {
 216     kDebug(5011) << "request password";
 217
 218     setStatus(Authenticating);
 219
 220     if (!m_url.password().isNull()) {
 221         vncThread.setPassword(m_url.password());
 222         return;
 223     }
 224
 225         QSettings settings;
 226         settings.beginGroup("hosts");
 227         QString password = settings.value(QString("%1/password").arg(m_host), "").toString();
 228         //check for saved password
 229         if(m_firstPasswordTry and !password.isEmpty()) {
 230                 kDebug(5011) << "Trying saved password";
 231                 m_firstPasswordTry = false;
 232                 vncThread.setPassword(password);
 233                 return;
 234         }
 235         m_firstPasswordTry = false;
 236
 237         //build dialog
 238         QDialog dialog(this);
 239         dialog.setWindowTitle(tr("Password required"));
 240
 241         QLineEdit passwordbox;
 242         passwordbox.setEchoMode(QLineEdit::Password);
 243         passwordbox.setText(password);
 244         QCheckBox save_password(tr("Save Password"));
 245         save_password.setChecked(!password.isEmpty()); //offer to overwrite saved password
 246         QPushButton ok_button(tr("Done"));
 247         ok_button.setMaximumWidth(100);
 248         connect(&ok_button, SIGNAL(clicked()),
 249                 &dialog, SLOT(accept()));
 250
 251         QHBoxLayout layout1;
 252         QVBoxLayout layout2;
 253         layout2.addWidget(&passwordbox);
 254         layout2.addWidget(&save_password);
 255         layout1.addLayout(&layout2);
 256         layout1.addWidget(&ok_button);
 257         dialog.setLayout(&layout1);
 258
 259         if(dialog.exec()) { //dialog accepted
 260                 password = passwordbox.text();
 261
 262                 if(save_password.isChecked()) {
 263                         kDebug(5011) << "Saving password for host '" << m_host << "'";
 264
 265                         settings.setValue(QString("%1/password").arg(m_host), password);
 266                         settings.sync();
 267                 }
 268
 269                 vncThread.setPassword(password);
 270         } else {
 271                 startQuitting();
 272         }
 273 }
 274
 275 void VncView::outputErrorMessage(const QString &message)
 276 {
 277     kDebug(5011) << message;
 278
 279     if (message == "INTERNAL:APPLE_VNC_COMPATIBILTY") {
 280         setCursor(localDotCursor());
 281         m_forceLocalCursor = true;
 282         return;
 283     }
 284
 285     startQuitting();
 286
 287     emit errorMessage(i18n("VNC failure"), message);
 288 }
 289
 290 void VncView::updateImage(int x, int y, int w, int h)
 291 {
 292         if(!QApplication::focusWidget()) { //no focus, we're probably minimized
 293                 return;
 294         }
 295      //kDebug(5011) << "got update" << width() << height();
 296
 297      /*
 298      static unsigned int frames = 0;
 299      static unsigned int updates = 0;
 300      static QTime time = QTime::currentTime();
 301      updates++;
 302      if(updates % 100 == 0)
 303              kDebug(5011) << "u/s: " << updates/double(time.elapsed()) * 1000.0;
 304 if(x == 0 and y == 0) {
 305         frames++;
 306      if(frames % 100 == 0)
 307              kDebug(5011) << "f/s: " << frames/double(time.elapsed()) * 1000.0;
 308 }
 309 */
 310
 311     m_x = x;
 312     m_y = y;
 313     m_w = w;
 314     m_h = h;
 315
 316
 317         //with scaled view, artefacts occur because of rounding errors
 318         //we'll try to only update chunks of screen space that correspond to integer pixel sizes in m_frame
 319         /*
 320         int frame_x = x/m_horizontalFactor;
 321         int frame_w = w/m_horizontalFactor;
 322         int frame_y = y/m_verticalFactor;
 323         int frame_h = h/m_verticalFactor;
 324
 325         m_x = frame_x*m_horizontalFactor;
 326         m_y = frame_y*m_verticalFactor;
 327
 328         m_w = (frame_w+2)*m_horizontalFactor;
 329         m_h = (frame_h+2)*m_verticalFactor;
 330         kDebug(5011)<< "update);
 331         */
 332
 333
 334 /* TODO if the above works, remove this
 335     if (m_horizontalFactor != 1.0 || m_verticalFactor != 1.0) {
 336         // If the view is scaled, grow the update rectangle to avoid artifacts
 337                 // I'm not sure if that's helpful
 338         int x_extrapixels = 1.0/m_horizontalFactor + 1;
 339         int y_extrapixels = 1.0/m_verticalFactor + 1;
 340
 341         m_x-=x_extrapixels;
 342         m_y-=y_extrapixels;
 343         m_w+=2*x_extrapixels;
 344         m_h+=2*y_extrapixels;
 345     }
 346         */
 347
 348     m_frame = vncThread.image();
 349
 350     if (!m_initDone) {
 351         setAttribute(Qt::WA_StaticContents);
 352         setAttribute(Qt::WA_OpaquePaintEvent);
 353         installEventFilter(this);
 354
 355         setCursor(((m_dotCursorState == CursorOn) || m_forceLocalCursor) ? localDotCursor() : Qt::BlankCursor);
 356
 357         setMouseTracking(true); // get mouse events even when there is no mousebutton pressed
 358         setFocusPolicy(Qt::WheelFocus);
 359         setStatus(Connected);
 360 //         emit framebufferSizeChanged(m_frame.width(), m_frame.height());
 361         emit connected();
 362
 363         if (m_scale) {
 364             if (parentWidget())
 365                 scaleResize(parentWidget()->width(), parentWidget()->height());
 366             else
 367                 scaleResize(width(), height());
 368         }
 369
 370         m_initDone = true;
 371
 372     }
 373
 374         static QSize old_frame_size = QSize();
 375     if ((y == 0 && x == 0) && (m_frame.size() != old_frame_size)) {
 376             old_frame_size = m_frame.size();
 377         kDebug(5011) << "Updating framebuffer size";
 378         if (m_scale) {
 379             //setMaximumSize(QSize(QWIDGETSIZE_MAX, QWIDGETSIZE_MAX));
 380             if (parentWidget())
 381                 scaleResize(parentWidget()->width(), parentWidget()->height());
 382         } else {
 383             kDebug(5011) << "Resizing: " << m_frame.width() << m_frame.height();
 384             resize(m_frame.width(), m_frame.height());
 385             //setMaximumSize(m_frame.width(), m_frame.height()); //This is a hack to force Qt to center the view in the scroll area
 386             //setMinimumSize(m_frame.width(), m_frame.height());
 387         }
 388         emit framebufferSizeChanged(m_frame.width(), m_frame.height());
 389     }
 390
 391     m_repaint = true;
 392     repaint(qRound(m_x * m_horizontalFactor), qRound(m_y * m_verticalFactor), qRound(m_w * m_horizontalFactor), qRound(m_h * m_verticalFactor));
 393     m_repaint = false;
 394 }
 395
 396 void VncView::setViewOnly(bool viewOnly)
 397 {
 398     RemoteView::setViewOnly(viewOnly);
 399
 400     m_dontSendClipboard = viewOnly;
 401
 402     if (viewOnly)
 403         setCursor(Qt::ArrowCursor);
 404     else
 405         setCursor(m_dotCursorState == CursorOn ? localDotCursor() : Qt::BlankCursor);
 406 }
 407
 408 void VncView::showDotCursor(DotCursorState state)
 409 {
 410     RemoteView::showDotCursor(state);
 411
 412     setCursor(state == CursorOn ? localDotCursor() : Qt::BlankCursor);
 413 }
 414
 415 void VncView::enableScaling(bool scale)
 416 {
 417     RemoteView::enableScaling(scale);
 418
 419     if (scale) {
 420         //setMaximumSize(QSize(QWIDGETSIZE_MAX, QWIDGETSIZE_MAX));
 421         //setMinimumSize(1, 1);
 422         if (parentWidget())
 423             scaleResize(parentWidget()->width(), parentWidget()->height());
 424             else
 425                         scaleResize(width(), height());
 426     } else {
 427         m_verticalFactor = 1.0;
 428         m_horizontalFactor = 1.0;
 429
 430         //setMaximumSize(m_frame.width(), m_frame.height()); //This is a hack to force Qt to center the view in the scroll area
 431         //setMinimumSize(m_frame.width(), m_frame.height());
 432         resize(m_frame.width(), m_frame.height());
 433     }
 434 }
 435
 436 //level should be in [0, 100]
 437 void VncView::setZoomLevel(int level)
 438 {
 439         Q_ASSERT(parentWidget() != 0);
 440
 441
 442         double factor; //actual magnification
 443         if(level > 95) {
 444                 factor = 2.0;
 445         } else if(level > 90) {
 446                 factor = 1.0;
 447         } else {
 448                 const double min_horiz_factor = double(parentWidget()->width())/m_frame.width();
 449                 const double min_vert_factor = double(parentWidget()->height())/m_frame.height();
 450                 const double fit_screen_factor = qMin(min_horiz_factor, min_vert_factor);
 451
 452                 //level=900 => factor=1.0, level=0 => factor=fit_screen_factor
 453                 factor = (level)/90.0*(1.0 - fit_screen_factor) + fit_screen_factor;
 454         }
 455
 456         if(factor < 0) {
 457                 //remote display smaller than local?
 458                 kDebug(5011) << "remote display smaller than local?";
 459                 factor = 1.0;
 460         }
 461
 462         m_verticalFactor = m_horizontalFactor = factor;
 463         resize(m_frame.width()*factor, m_frame.height()*factor);
 464 }
 465
 466 void VncView::setCut(const QString &text)
 467 {
 468     m_dontSendClipboard = true;
 469     m_clipboard->setText(text, QClipboard::Clipboard);
 470     m_clipboard->setText(text, QClipboard::Selection);
 471     m_dontSendClipboard = false;
 472 }
 473
 474 void VncView::paintEvent(QPaintEvent *event)
 475 {
 476      //kDebug(5011) << "paint event: x: " << m_x << ", y: " << m_y << ", w: " << m_w << ", h: " << m_h;
 477     if (m_frame.isNull() || m_frame.format() == QImage::Format_Invalid) {
 478         kDebug(5011) << "no valid image to paint";
 479         RemoteView::paintEvent(event);
 480         return;
 481     }
 482
 483     event->accept();
 484
 485     QPainter painter(this);
 486
 487         Qt::TransformationMode transformation_mode = Qt::SmoothTransformation;
 488         if( m_horizontalFactor >= 1.0 )
 489                 transformation_mode = Qt::FastTransformation;
 490
 491     if (m_repaint and !force_full_repaint) {
 492 //         kDebug(5011) << "normal repaint";
 493         painter.drawImage(QRect(qRound(m_x*m_horizontalFactor), qRound(m_y*m_verticalFactor),
 494                                 qRound(m_w*m_horizontalFactor), qRound(m_h*m_verticalFactor)),
 495                           m_frame.copy(m_x, m_y, m_w, m_h).scaled(qRound(m_w*m_horizontalFactor),
 496                                                                   qRound(m_h*m_verticalFactor),
 497                                                                   Qt::IgnoreAspectRatio, transformation_mode));
 498     } else {
 499          //kDebug(5011) << "resize repaint";
 500         QRect rect = event->rect();
 501         if (!force_full_repaint and (rect.width() != width() || rect.height() != height())) {
 502           //   kDebug(5011) << "Partial repaint";
 503             const int sx = rect.x()/m_horizontalFactor;
 504             const int sy = rect.y()/m_verticalFactor;
 505             const int sw = rect.width()/m_horizontalFactor;
 506             const int sh = rect.height()/m_verticalFactor;
 507             painter.drawImage(rect,
 508                               m_frame.copy(sx, sy, sw, sh).scaled(rect.width(), rect.height(),
 509                                                                   Qt::IgnoreAspectRatio, transformation_mode));
 510         } else {
 511              kDebug(5011) << "Full repaint" << width() << height() << m_frame.width() << m_frame.height();
 512             painter.drawImage(QRect(0, 0, width(), height()),
 513                               m_frame.scaled(m_frame.width() * m_horizontalFactor, m_frame.height() * m_verticalFactor,
 514                                              Qt::IgnoreAspectRatio, transformation_mode));
 515                         force_full_repaint = false;
 516         }
 517     }
 518
 519         //draw local cursor ourselves, normal mouse pointer doesn't deal with scrolling
 520         if((m_dotCursorState == CursorOn) || m_forceLocalCursor) {
 521 #if QT_VERSION >= 0x040500
 522                 painter.setCompositionMode(QPainter::RasterOp_SourceXorDestination);
 523 #endif
 524                 //rectangle size includes 1px pen width
 525                 painter.drawRect(cursor_x*m_horizontalFactor - cursor_size/2, cursor_y*m_verticalFactor - cursor_size/2, cursor_size-1, cursor_size-1);
 526         }
 527
 528     RemoteView::paintEvent(event);
 529 }
 530
 531 void VncView::resizeEvent(QResizeEvent *event)
 532 {
 533     RemoteView::resizeEvent(event);
 534         /*
 535     scaleResize(event->size().width(), event->size().height());
 536     forceFullRepaint();
 537         */
 538 }
 539
 540 bool VncView::event(QEvent *event)
 541 {
 542     switch (event->type()) {
 543     case QEvent::KeyPress:
 544     case QEvent::KeyRelease:
 545 //         kDebug(5011) << "keyEvent";
 546         keyEventHandler(static_cast<QKeyEvent*>(event));
 547         return true;
 548         break;
 549     case QEvent::MouseButtonDblClick:
 550     case QEvent::MouseButtonPress:
 551     case QEvent::MouseButtonRelease:
 552     case QEvent::MouseMove:
 553 //         kDebug(5011) << "mouseEvent";
 554         mouseEventHandler(static_cast<QMouseEvent*>(event));
 555         return true;
 556         break;
 557     case QEvent::Wheel:
 558 //         kDebug(5011) << "wheelEvent";
 559         wheelEventHandler(static_cast<QWheelEvent*>(event));
 560         return true;
 561         break;
 562     case QEvent::WindowActivate: //input panel may have been closed, prevent IM from interfering with hardware keyboard
 563         setAttribute(Qt::WA_InputMethodEnabled, false);
 564         //fall through
 565     default:
 566         return RemoteView::event(event);
 567     }
 568 }
 569
 570 //call with e == 0 to flush held events
 571 void VncView::mouseEventHandler(QMouseEvent *e)
 572 {
 573         static bool tap_detected = false;
 574         static bool double_tap_detected = false;
 575         static bool tap_drag_detected = false;
 576         static QTime press_time;
 577         static QTime up_time; //used for double clicks/tap&drag, for time after first tap
 578
 579         const int TAP_PRESS_TIME = 180;
 580         const int DOUBLE_TAP_UP_TIME = 500;
 581
 582         if(!e) { //flush held taps
 583                 if(tap_detected) {
 584                         m_buttonMask |= 0x01;
 585                         vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 586                         m_buttonMask &= 0xfe;
 587                         vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 588                         tap_detected = false;
 589                 } else if(double_tap_detected and press_time.elapsed() > TAP_PRESS_TIME) { //got tap + another press -> tap & drag
 590                         m_buttonMask |= 0x01;
 591                         vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 592                         double_tap_detected = false;
 593                         tap_drag_detected = true;
 594                 }
 595
 596                 return;
 597         }
 598
 599         if(e->x() < 0 or e->y() < 0) { //QScrollArea tends to send invalid events sometimes...
 600                 e->ignore();
 601                 return;
 602         }
 603
 604         cursor_x = qRound(e->x()/m_horizontalFactor);
 605         cursor_y = qRound(e->y()/m_verticalFactor);
 606         vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask); // plain move event
 607
 608         if(!disable_tapping and e->button() == Qt::LeftButton) { //implement touchpad-like input for left button
 609                 if(e->type() == QEvent::MouseButtonPress or e->type() == QEvent::MouseButtonDblClick) {
 610                         press_time.start();
 611                         if(tap_detected and up_time.elapsed() < DOUBLE_TAP_UP_TIME) {
 612                                 tap_detected = false;
 613                                 double_tap_detected = true;
 614
 615                                 QTimer::singleShot(TAP_PRESS_TIME, this, SLOT(mouseEventHandler()));
 616                         }
 617                 } else if(e->type() == QEvent::MouseButtonRelease) {
 618                         if(tap_drag_detected) {
 619                                 m_buttonMask &= 0xfe;
 620                                 vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 621                                 tap_drag_detected = false;
 622                         } else if(double_tap_detected) { //double click
 623                                 double_tap_detected = false;
 624
 625                                 m_buttonMask |= 0x01;
 626                                 vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 627                                 m_buttonMask &= 0xfe;
 628                                 vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 629                                 m_buttonMask |= 0x01;
 630                                 vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 631                                 m_buttonMask &= 0xfe;
 632                                 vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 633                         } else if(press_time.elapsed() < TAP_PRESS_TIME) { //tap
 634                                 up_time.start();
 635                                 tap_detected = true;
 636                                 QTimer::singleShot(DOUBLE_TAP_UP_TIME, this, SLOT(mouseEventHandler()));
 637                         }
 638
 639                 }
 640         } else { //middle or right button, send directly
 641                 if ((e->type() == QEvent::MouseButtonPress)) {
 642                     if (e->button() & Qt::MidButton)
 643                         m_buttonMask |= 0x02;
 644                     if (e->button() & Qt::RightButton)
 645                         m_buttonMask |= 0x04;
 646                 } else if (e->type() == QEvent::MouseButtonRelease) {
 647                     if (e->button() & Qt::MidButton)
 648                         m_buttonMask &= 0xfd;
 649                     if (e->button() & Qt::RightButton)
 650                         m_buttonMask &= 0xfb;
 651                 }
 652                 vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 653         }
 654
 655         //prevent local cursor artifacts
 656         static int old_cursor_x = cursor_x;
 657         static int old_cursor_y = cursor_y;
 658         if(((m_dotCursorState == CursorOn) || m_forceLocalCursor)
 659         and (cursor_x != old_cursor_x or cursor_y != old_cursor_y)) {
 660                 //clear last position
 661                 repaint(old_cursor_x*m_horizontalFactor - cursor_size/2, old_cursor_y*m_verticalFactor - cursor_size/2, cursor_size, cursor_size);
 662                 //and refresh new one
 663                 repaint(cursor_x*m_horizontalFactor - cursor_size/2, cursor_y*m_verticalFactor - cursor_size/2, cursor_size, cursor_size);
 664
 665                 old_cursor_x = cursor_x; old_cursor_y = cursor_y;
 666         }
 667 }
 668
 669 void VncView::wheelEventHandler(QWheelEvent *event)
 670 {
 671     int eb = 0;
 672     if (event->delta() < 0)
 673         eb |= 0x10;
 674     else
 675         eb |= 0x8;
 676
 677     const int x = qRound(event->x() / m_horizontalFactor);
 678     const int y = qRound(event->y() / m_verticalFactor);
 679
 680     vncThread.mouseEvent(x, y, eb | m_buttonMask);
 681     vncThread.mouseEvent(x, y, m_buttonMask);
 682 }
 683
 684 void VncView::keyEventHandler(QKeyEvent *e)
 685 {
 686     // strip away autorepeating KeyRelease; see bug #206598
 687     if (e->isAutoRepeat() && (e->type() == QEvent::KeyRelease)) {
 688         return;
 689     }
 690
 691 // parts of this code are based on http://italc.sourcearchive.com/documentation/1.0.9.1/vncview_8cpp-source.html
 692     rfbKeySym k = e->nativeVirtualKey();
 693
 694     // we do not handle Key_Backtab separately as the Shift-modifier
 695     // is already enabled
 696     if (e->key() == Qt::Key_Backtab) {
 697         k = XK_Tab;
 698     }
 699
 700     const bool pressed = (e->type() == QEvent::KeyPress);
 701
 702 #ifdef Q_WS_MAEMO_5
 703     //don't send ISO_Level3_Shift (would break things like Win+0-9)
 704     //also enable IM so symbol key works
 705     if(k == 0xfe03) {
 706             setAttribute(Qt::WA_InputMethodEnabled, pressed);
 707             e->ignore();
 708             return;
 709     }
 710 #endif
 711
 712     // handle modifiers
 713     if (k == XK_Shift_L || k == XK_Control_L || k == XK_Meta_L || k == XK_Alt_L) {
 714         if (pressed) {
 715             m_mods[k] = true;
 716         } else if (m_mods.contains(k)) {
 717             m_mods.remove(k);
 718         } else {
 719             unpressModifiers();
 720         }
 721     }
 722
 723
 724         int current_zoom = -1;
 725         if(e->key() == Qt::Key_F8)
 726                 current_zoom = left_zoom;
 727         else if(e->key() == Qt::Key_F7)
 728                 current_zoom = right_zoom;
 729         else if (k) {
 730         //      kDebug(5011) << "got '" << e->text() << "'.";
 731                 vncThread.keyEvent(k, pressed);
 732         } else {
 733                 kDebug(5011) << "nativeVirtualKey() for '" << e->text() << "' failed.";
 734                 return;
 735         }
 736
 737         if(current_zoom == -1)
 738                 return;
 739
 740         //handle zoom buttons
 741         if(current_zoom == 0) { //left click
 742                 if(pressed)
 743                         m_buttonMask |= 0x01;
 744                 else
 745                         m_buttonMask &= 0xfe;
 746                 vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 747         } else if(current_zoom == 1) { //right click
 748                 if(pressed)
 749                         m_buttonMask |= 0x04;
 750                 else
 751                         m_buttonMask &= 0xfb;
 752                 vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 753         } else if(current_zoom == 2) { //middle click
 754                 if(pressed)
 755                         m_buttonMask |= 0x02;
 756                 else
 757                         m_buttonMask &= 0xfd;
 758                 vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 759         } else if(current_zoom == 3 and pressed) { //wheel up
 760                 int eb = 0x8;
 761                 vncThread.mouseEvent(cursor_x, cursor_y, eb | m_buttonMask);
 762                 vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 763         } else if(current_zoom == 4 and pressed) { //wheel down
 764                 int eb = 0x10;
 765                 vncThread.mouseEvent(cursor_x, cursor_y, eb | m_buttonMask);
 766                 vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 767         } else if(current_zoom == 5) { //page up
 768                 vncThread.keyEvent(0xff55, pressed);
 769         } else if(current_zoom == 6) { //page down
 770                 vncThread.keyEvent(0xff56, pressed);
 771         }
 772 }
 773
 774 void VncView::unpressModifiers()
 775 {
 776     const QList<unsigned int> keys = m_mods.keys();
 777     QList<unsigned int>::const_iterator it = keys.constBegin();
 778     while (it != keys.end()) {
 779         vncThread.keyEvent(*it, false);
 780         it++;
 781     }
 782     m_mods.clear();
 783 }
 784
 785 void VncView::clipboardSelectionChanged()
 786 {
 787     if (m_status != Connected)
 788         return;
 789
 790     if (m_clipboard->ownsSelection() || m_dontSendClipboard)
 791         return;
 792
 793     const QString text = m_clipboard->text(QClipboard::Selection);
 794
 795     vncThread.clientCut(text);
 796 }
 797
 798 void VncView::clipboardDataChanged()
 799 {
 800     if (m_status != Connected)
 801         return;
 802
 803     if (m_clipboard->ownsClipboard() || m_dontSendClipboard)
 804         return;
 805
 806     const QString text = m_clipboard->text(QClipboard::Clipboard);
 807
 808     vncThread.clientCut(text);
 809 }
 810
 811 //fake key events
 812 void VncView::sendKey(Qt::Key key)
 813 {
 814         //convert Qt::Key into x11 keysym
 815         int k = 0;
 816         switch(key) {
 817         case Qt::Key_Escape:
 818                 k = 0xff1b;
 819                 break;
 820         case Qt::Key_Tab:
 821                 k = 0xff09;
 822                 break;
 823         case Qt::Key_PageUp:
 824                 k = 0xff55;
 825                 break;
 826         case Qt::Key_PageDown:
 827                 k = 0xff56;
 828                 break;
 829         case Qt::Key_Return:
 830                 k = 0xff0d;
 831                 break;
 832         case Qt::Key_Insert:
 833                 k = 0xff63;
 834                 break;
 835         case Qt::Key_Delete:
 836                 k = 0xffff;
 837                 break;
 838         case Qt::Key_Home:
 839                 k = 0xff50;
 840                 break;
 841         case Qt::Key_End:
 842                 k = 0xff57;
 843                 break;
 844         case Qt::Key_Backspace:
 845                 k = 0xff08;
 846                 break;
 847         case Qt::Key_F1:
 848         case Qt::Key_F2:
 849         case Qt::Key_F3:
 850         case Qt::Key_F4:
 851         case Qt::Key_F5:
 852         case Qt::Key_F6:
 853         case Qt::Key_F7:
 854         case Qt::Key_F8:
 855         case Qt::Key_F9:
 856         case Qt::Key_F10:
 857         case Qt::Key_F11:
 858         case Qt::Key_F12:
 859                 k = 0xffbe + int(key - Qt::Key_F1);
 860                 break;
 861         case Qt::Key_Pause:
 862                 k = 0xff13;
 863                 break;
 864         case Qt::Key_Print:
 865                 k = 0xff61;
 866                 break;
 867         case Qt::Key_Menu:
 868                 k = 0xff67;
 869                 break;
 870         case Qt::Key_Meta:
 871         case Qt::MetaModifier:
 872                 k = XK_Super_L;
 873                 break;
 874         case Qt::Key_Alt:
 875         case Qt::AltModifier:
 876                 k = XK_Alt_L;
 877                 break;
 878         case Qt::Key_Control:
 879         case Qt::ControlModifier:
 880                 k = XK_Control_L;
 881                 break;
 882         default:
 883                 kDebug(5011) << "sendKey(): Unhandled Qt::Key value " << key;
 884                 return;
 885         }
 886
 887         if (k == XK_Shift_L || k == XK_Control_L || k == XK_Meta_L || k == XK_Alt_L || k == XK_Super_L) {
 888                 if (m_mods.contains(k)) { //release
 889                         m_mods.remove(k);
 890                         vncThread.keyEvent(k, false);
 891                 } else { //press
 892                         m_mods[k] = true;
 893                         vncThread.keyEvent(k, true);
 894                 }
 895         } else { //normal key
 896                 vncThread.keyEvent(k, true);
 897                 vncThread.keyEvent(k, false);
 898         }
 899 }
 900
 901 void VncView::sendKeySequence(QKeySequence keys)
 902 {
 903         Q_ASSERT(keys.count() <= 1); //we can only handle a single combination
 904
 905         //to get at individual key presses, we split 'keys' into its components
 906         QList<int> key_list;
 907         for(int i = 0; ; i++) {
 908                 QString k = keys.toString().section('+', i, i);
 909                 if(k.isEmpty())
 910                         break;
 911                 //kDebug(5011) << "found key: " << k;
 912                 if(k == "Alt") {
 913                         key_list.append(Qt::Key_Alt);
 914                 } else if(k == "Ctrl") {
 915                         key_list.append(Qt::Key_Control);
 916                 } else if(k == "Meta") {
 917                         key_list.append(Qt::Key_Meta);
 918                 } else {
 919                         key_list.append(QKeySequence(k)[0]);
 920                 }
 921         }
 922
 923         for(int i = 0; i < key_list.count(); i++)
 924                 sendKey(Qt::Key(key_list.at(i)));
 925
 926         //release modifiers (everything before final key)
 927         for(int i = key_list.count()-2; i >= 0; i--)
 928                 sendKey(Qt::Key(key_list.at(i)));
 929 }
 930
 931 void VncView::reloadSettings()
 932 {
 933         QSettings settings;
 934         left_zoom = settings.value("left_zoom", 0).toInt();
 935         right_zoom = settings.value("right_zoom", 1).toInt();
 936         disable_tapping = settings.value("disable_tapping", false).toBool();
 937
 938         bool always_show_local_cursor = settings.value("always_show_local_cursor", false).toBool();
 939         if(always_show_local_cursor)
 940                 showDotCursor(CursorOn);
 941 }
 942
 943 //convert commitString into keyevents
 944 void VncView::inputMethodEvent(QInputMethodEvent *event)
 945 {
 946         //TODO handle replacements
 947         //NOTE for the return key to work Qt needs to enable multiline input, which only works for Q(Plain)TextEdit
 948
 949         //kDebug(5011) << event->commitString() << "|" << event->preeditString() << "|" << event->replacementLength() << "|" << event->replacementStart();
 950         QString letters = event->commitString();
 951         for(int i = 0; i < letters.length(); i++) {
 952                 char k = letters.at(i).toLatin1(); //works with all 'normal' keys, not umlauts.
 953                 if(!k) {
 954                         kDebug(5011) << "unhandled key";
 955                         continue;
 956                 }
 957                 vncThread.keyEvent(k, true);
 958                 vncThread.keyEvent(k, false);
 959         }
 960 }
 961
 962
 963 #include "moc_vncview.cpp"