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