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