vcs.maemo.org Git - presencevnc/blob - src/vncview.cpp

   1 /****************************************************************************
   2 **
   3 ** Copyright (C) 2007-2008 Urs Wolfer <uwolfer @ kde.org>
   4 **
   5 ** This file is part of KDE.
   6 **
   7 ** This program is free software; you can redistribute it and/or modify
   8 ** it under the terms of the GNU General Public License as published by
   9 ** the Free Software Foundation; either version 2 of the License, or
  10 ** (at your option) any later version.
  11 **
  12 ** This program is distributed in the hope that it will be useful,
  13 ** but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  15 ** GNU General Public License for more details.
  16 **
  17 ** You should have received a copy of the GNU General Public License
  18 ** along with this program; see the file COPYING. If not, write to
  19 ** the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  20 ** Boston, MA 02110-1301, USA.
  21 **
  22 ****************************************************************************/
  23
  24 #include "vncview.h"
  25
  26 #include <QMessageBox>
  27 #include <QInputDialog>
  28 #define KMessageBox QMessageBox
  29 #define error(parent, message, caption) \
  30 critical(parent, caption, message)
  31
  32 #include <QApplication>
  33 #include <QBitmap>
  34 #include <QCheckBox>
  35 #include <QDialog>
  36 #include <QImage>
  37 #include <QHBoxLayout>
  38 #include <QVBoxLayout>
  39 #include <QPainter>
  40 #include <QMouseEvent>
  41 #include <QPushButton>
  42 #include <QEvent>
  43 #include <QSettings>
  44 #include <QTime>
  45 #include <QTimer>
  46
  47
  48 // Definition of key modifier mask constants
  49 #define KMOD_Alt_R      0x01
  50 #define KMOD_Alt_L      0x02
  51 #define KMOD_Meta_L     0x04
  52 #define KMOD_Control_L  0x08
  53 #define KMOD_Shift_L    0x10
  54
  55 //local cursor width/height in px, should be an odd number
  56 const int CURSOR_SIZE = 7;
  57
  58 const int TAP_PRESS_TIME = 180;
  59 const int DOUBLE_TAP_UP_TIME = 500;
  60
  61
  62 VncView::VncView(QWidget *parent, const KUrl &url, RemoteView::Quality quality, int listen_port)
  63         : RemoteView(parent),
  64         m_initDone(false),
  65         m_buttonMask(0),
  66         cursor_x(0),
  67         cursor_y(0),
  68         m_repaint(false),
  69         m_quitFlag(false),
  70         m_firstPasswordTry(true),
  71         m_dontSendClipboard(false),
  72         m_horizontalFactor(1.0),
  73         m_verticalFactor(1.0),
  74         m_forceLocalCursor(false),
  75         force_full_repaint(false),
  76         quality(quality),
  77         listen_port(listen_port)
  78 {
  79     m_url = url;
  80     m_host = url.host();
  81     m_port = url.port();
  82
  83         //BlockingQueuedConnection can cause deadlocks when exiting, handled in startQuitting()
  84     connect(&vncThread, SIGNAL(imageUpdated(int, int, int, int)), this, SLOT(updateImage(int, int, int, int)), Qt::BlockingQueuedConnection);
  85     connect(&vncThread, SIGNAL(gotCut(const QString&)), this, SLOT(setCut(const QString&)), Qt::BlockingQueuedConnection);
  86     connect(&vncThread, SIGNAL(passwordRequest()), this, SLOT(requestPassword()), Qt::BlockingQueuedConnection);
  87     connect(&vncThread, SIGNAL(outputErrorMessage(QString)), this, SLOT(outputErrorMessage(QString)));
  88
  89         //don't miss early connection failures
  90         connect(&vncThread, SIGNAL(finished()), this, SLOT(startQuitting()));
  91
  92     m_clipboard = QApplication::clipboard();
  93     connect(m_clipboard, SIGNAL(selectionChanged()), this, SLOT(clipboardSelectionChanged()));
  94     connect(m_clipboard, SIGNAL(dataChanged()), this, SLOT(clipboardDataChanged()));
  95
  96     reloadSettings();
  97 }
  98
  99 VncView::~VncView()
 100 {
 101     unpressModifiers();
 102
 103     // Disconnect all signals so that we don't get any more callbacks from the client thread
 104     vncThread.disconnect();
 105
 106     startQuitting();
 107 }
 108
 109 void VncView::forceFullRepaint()
 110 {
 111         force_full_repaint = true;
 112         repaint();
 113 }
 114
 115 bool VncView::eventFilter(QObject *obj, QEvent *event)
 116 {
 117     if (m_viewOnly) {
 118         if (event->type() == QEvent::KeyPress ||
 119                 event->type() == QEvent::KeyRelease ||
 120                 event->type() == QEvent::MouseButtonDblClick ||
 121                 event->type() == QEvent::MouseButtonPress ||
 122                 event->type() == QEvent::MouseButtonRelease ||
 123                 event->type() == QEvent::Wheel ||
 124                 event->type() == QEvent::MouseMove)
 125             return true;
 126     }
 127     return RemoteView::eventFilter(obj, event);
 128 }
 129
 130 QSize VncView::framebufferSize()
 131 {
 132     return m_frame.size();
 133 }
 134
 135 QSize VncView::sizeHint() const
 136 {
 137     return size();
 138 }
 139
 140 QSize VncView::minimumSizeHint() const
 141 {
 142     return size();
 143 }
 144
 145 void VncView::startQuitting()
 146 {
 147         if(isQuitting())
 148                 return;
 149
 150     kDebug(5011) << "about to quit";
 151
 152     //const bool connected = status() == RemoteView::Connected;
 153
 154     setStatus(Disconnecting);
 155
 156     m_quitFlag = true;
 157
 158         //if(connected) //remove if things work without it
 159         vncThread.stop();
 160
 161     const bool quitSuccess = vncThread.wait(700);
 162         if(!quitSuccess) {
 163                 //happens when vncThread wants to call a slot via BlockingQueuedConnection,
 164                 //needs an event loop in this thread so execution continues after 'emit'
 165                 QEventLoop loop;
 166                 if(!loop.processEvents())
 167                         kDebug(5011) << "BUG: deadlocked, but no events to deliver?";
 168                 vncThread.wait(700);
 169         }
 170     setStatus(Disconnected);
 171 }
 172
 173 bool VncView::isQuitting()
 174 {
 175     return m_quitFlag;
 176 }
 177
 178 bool VncView::start()
 179 {
 180     vncThread.setHost(m_host);
 181     vncThread.setPort(m_port);
 182         vncThread.setListenPort(listen_port); //if port is != 0, thread will listen for connections
 183     vncThread.setQuality(quality);
 184
 185     // set local cursor on by default because low quality mostly means slow internet connection
 186     if (quality == RemoteView::Low) {
 187         showDotCursor(RemoteView::CursorOn);
 188     }
 189
 190     setStatus(Connecting);
 191
 192     vncThread.start();
 193     return true;
 194 }
 195
 196 bool VncView::supportsScaling() const
 197 {
 198     return true;
 199 }
 200
 201 bool VncView::supportsLocalCursor() const
 202 {
 203     return true;
 204 }
 205
 206 void VncView::requestPassword()
 207 {
 208     kDebug(5011) << "request password";
 209
 210     setStatus(Authenticating);
 211
 212     if (!m_url.password().isNull()) {
 213         vncThread.setPassword(m_url.password());
 214         return;
 215     }
 216
 217         QSettings settings;
 218         settings.beginGroup("hosts");
 219         QString password = settings.value(QString("%1/password").arg(m_host), "").toString();
 220         //check for saved password
 221         if(m_firstPasswordTry and !password.isEmpty()) {
 222                 kDebug(5011) << "Trying saved password";
 223                 m_firstPasswordTry = false;
 224                 vncThread.setPassword(password);
 225                 return;
 226         }
 227         m_firstPasswordTry = false;
 228
 229         //build dialog
 230         QDialog dialog(this);
 231         dialog.setWindowTitle(tr("Password required"));
 232
 233         QLineEdit passwordbox;
 234         passwordbox.setEchoMode(QLineEdit::Password);
 235         passwordbox.setText(password);
 236         QCheckBox save_password(tr("Save Password"));
 237         save_password.setChecked(!password.isEmpty()); //offer to overwrite saved password
 238         QPushButton ok_button(tr("Done"));
 239         ok_button.setMaximumWidth(100);
 240         connect(&ok_button, SIGNAL(clicked()),
 241                 &dialog, SLOT(accept()));
 242
 243         QHBoxLayout layout1;
 244         QVBoxLayout layout2;
 245         layout2.addWidget(&passwordbox);
 246         if(!m_host.isEmpty()) //don't save incomming connections
 247                 layout2.addWidget(&save_password);
 248         layout1.addLayout(&layout2);
 249         layout1.addWidget(&ok_button);
 250         dialog.setLayout(&layout1);
 251
 252         if(dialog.exec()) { //dialog accepted
 253                 password = passwordbox.text();
 254
 255                 if(!m_host.isEmpty() and save_password.isChecked()) {
 256                         kDebug(5011) << "Saving password for host '" << m_host << "'";
 257
 258                         settings.setValue(QString("%1/password").arg(m_host), password);
 259                         settings.sync();
 260                 }
 261
 262                 vncThread.setPassword(password);
 263         } else {
 264                 vncThread.setPassword(QString()); //null string to exit
 265         }
 266 }
 267
 268 void VncView::outputErrorMessage(const QString &message)
 269 {
 270     if (message == "INTERNAL:APPLE_VNC_COMPATIBILTY") {
 271         setCursor(localDotCursor());
 272         m_forceLocalCursor = true;
 273         return;
 274     }
 275
 276     startQuitting();
 277
 278     emit errorMessage(i18n("VNC failure"), message);
 279 }
 280
 281 void VncView::updateImage(int x, int y, int w, int h)
 282 {
 283         if(!QApplication::focusWidget()) { //no focus, we're probably minimized
 284                 return;
 285         }
 286
 287      //kDebug(5011) << "got update" << width() << height();
 288
 289     m_x = x;
 290     m_y = y;
 291     m_w = w;
 292     m_h = h;
 293
 294     if (m_horizontalFactor != 1.0 || m_verticalFactor != 1.0) {
 295         // If the view is scaled, grow the update rectangle to avoid artifacts
 296         int x_extrapixels = 1.0/m_horizontalFactor + 1;
 297         int y_extrapixels = 1.0/m_verticalFactor + 1;
 298
 299         m_x-=x_extrapixels;
 300         m_y-=y_extrapixels;
 301         m_w+=2*x_extrapixels;
 302         m_h+=2*y_extrapixels;
 303     }
 304
 305     m_frame = vncThread.image();
 306
 307     if (!m_initDone) { //TODO this seems an odd place for initialization
 308         setAttribute(Qt::WA_StaticContents);
 309         setAttribute(Qt::WA_OpaquePaintEvent);
 310         installEventFilter(this);
 311
 312         setCursor(((m_dotCursorState == CursorOn) || m_forceLocalCursor) ? localDotCursor() : Qt::BlankCursor);
 313
 314         setMouseTracking(true); // get mouse events even when there is no mousebutton pressed
 315         setFocusPolicy(Qt::WheelFocus);
 316         setStatus(Connected);
 317 //         emit framebufferSizeChanged(m_frame.width(), m_frame.height());
 318         emit connected();
 319
 320                 resize(width(), height());
 321
 322         m_initDone = true;
 323
 324     }
 325
 326         static QSize old_frame_size = QSize();
 327     if ((y == 0 && x == 0) && (m_frame.size() != old_frame_size)) {
 328             old_frame_size = m_frame.size();
 329         kDebug(5011) << "Updating framebuffer size";
 330                 setZoomLevel();
 331         emit framebufferSizeChanged(m_frame.width(), m_frame.height());
 332     }
 333
 334     m_repaint = true;
 335     repaint(qRound(m_x * m_horizontalFactor), qRound(m_y * m_verticalFactor), qRound(m_w * m_horizontalFactor), qRound(m_h * m_verticalFactor));
 336     m_repaint = false;
 337 }
 338
 339 void VncView::setViewOnly(bool viewOnly)
 340 {
 341     RemoteView::setViewOnly(viewOnly);
 342
 343     m_dontSendClipboard = viewOnly;
 344
 345     if (viewOnly)
 346         setCursor(Qt::ArrowCursor);
 347     else
 348         setCursor(m_dotCursorState == CursorOn ? localDotCursor() : Qt::BlankCursor);
 349 }
 350
 351 void VncView::showDotCursor(DotCursorState state)
 352 {
 353     RemoteView::showDotCursor(state);
 354
 355     setCursor(state == CursorOn ? localDotCursor() : Qt::BlankCursor);
 356 }
 357
 358 //level should be in [0, 100]
 359 void VncView::setZoomLevel(int level)
 360 {
 361         Q_ASSERT(parentWidget() != 0);
 362
 363         if(level == -1) { //handle resize
 364                 resize(m_frame.width()*m_horizontalFactor, m_frame.height()*m_verticalFactor);
 365                 return;
 366         }
 367
 368         double magnification;
 369         if(level == 100) {
 370                 magnification = 2.0;
 371         } else if(level >= 90) {
 372                 magnification = 1.0;
 373         } else {
 374                 const double min_horiz_magnification = double(parentWidget()->width())/m_frame.width();
 375                 const double min_vert_magnification = double(parentWidget()->height())/m_frame.height();
 376                 const double fit_screen_magnification = qMin(min_horiz_magnification, min_vert_magnification);
 377
 378                 //level=90 => magnification=1.0, level=0 => magnification=fit_screen_magnification
 379                 magnification = (level)/90.0*(1.0 - fit_screen_magnification) + fit_screen_magnification;
 380         }
 381
 382         if(magnification < 0                    //remote display smaller than local?
 383         or magnification != magnification)      //nan
 384                 magnification = 1.0;
 385
 386         m_verticalFactor = m_horizontalFactor = magnification;
 387         resize(m_frame.width()*magnification, m_frame.height()*magnification);
 388 }
 389
 390 void VncView::setCut(const QString &text)
 391 {
 392     m_dontSendClipboard = true;
 393     m_clipboard->setText(text, QClipboard::Clipboard);
 394     m_clipboard->setText(text, QClipboard::Selection);
 395     m_dontSendClipboard = false;
 396 }
 397
 398 void VncView::paintEvent(QPaintEvent *event)
 399 {
 400      //kDebug(5011) << "paint event: x: " << m_x << ", y: " << m_y << ", w: " << m_w << ", h: " << m_h;
 401     if (m_frame.isNull() || m_frame.format() == QImage::Format_Invalid) {
 402         kDebug(5011) << "no valid image to paint";
 403         RemoteView::paintEvent(event);
 404         return;
 405     }
 406
 407     event->accept();
 408
 409     QPainter painter(this);
 410
 411         Qt::TransformationMode transformation_mode = Qt::SmoothTransformation;
 412         if( m_horizontalFactor >= 1.0 )
 413                 transformation_mode = Qt::FastTransformation;
 414
 415         //TODO: seems to have no purpose, remove
 416     if (false and m_repaint and !force_full_repaint) {
 417 //         kDebug(5011) << "normal repaint";
 418         painter.drawImage(QRect(qRound(m_x*m_horizontalFactor), qRound(m_y*m_verticalFactor),
 419                                 qRound(m_w*m_horizontalFactor), qRound(m_h*m_verticalFactor)),
 420                           m_frame.copy(m_x, m_y, m_w, m_h).scaled(qRound(m_w*m_horizontalFactor),
 421                                                                   qRound(m_h*m_verticalFactor),
 422                                                                   Qt::IgnoreAspectRatio, transformation_mode));
 423     } else {
 424          //kDebug(5011) << "resize repaint";
 425         const QRect rect = event->rect();
 426         if (!force_full_repaint and (rect.width() != width() || rect.height() != height())) {
 427           //   kDebug(5011) << "Partial repaint";
 428             const int sx = rect.x()/m_horizontalFactor;
 429             const int sy = rect.y()/m_verticalFactor;
 430             const int sw = rect.width()/m_horizontalFactor;
 431             const int sh = rect.height()/m_verticalFactor;
 432             painter.drawImage(rect,
 433                               m_frame.copy(sx, sy, sw, sh).scaled(rect.width(), rect.height(),
 434                                                                   Qt::IgnoreAspectRatio, transformation_mode));
 435         } else {
 436                         kDebug(5011) << "Full repaint" << width() << height() << m_frame.width() << m_frame.height();
 437             painter.drawImage(QRect(0, 0, width(), height()),
 438                               m_frame.scaled(m_frame.width() * m_horizontalFactor, m_frame.height() * m_verticalFactor,
 439                                              Qt::IgnoreAspectRatio, transformation_mode));
 440                         force_full_repaint = false;
 441         }
 442     }
 443
 444         //draw local cursor ourselves, normal mouse pointer doesn't deal with scrolling
 445         if((m_dotCursorState == CursorOn) || m_forceLocalCursor) {
 446 #if QT_VERSION >= 0x040500
 447                 painter.setCompositionMode(QPainter::RasterOp_SourceXorDestination);
 448 #endif
 449                 //rectangle size includes 1px pen width
 450                 painter.drawRect(cursor_x*m_horizontalFactor - CURSOR_SIZE/2, cursor_y*m_verticalFactor - CURSOR_SIZE/2, CURSOR_SIZE-1, CURSOR_SIZE-1);
 451         }
 452
 453     RemoteView::paintEvent(event);
 454 }
 455
 456 void VncView::resizeEvent(QResizeEvent *event)
 457 {
 458     RemoteView::resizeEvent(event);
 459     update();
 460 }
 461
 462 bool VncView::event(QEvent *event)
 463 {
 464     switch (event->type()) {
 465     case QEvent::KeyPress:
 466     case QEvent::KeyRelease:
 467 //         kDebug(5011) << "keyEvent";
 468         keyEventHandler(static_cast<QKeyEvent*>(event));
 469         return true;
 470         break;
 471     case QEvent::MouseButtonDblClick:
 472     case QEvent::MouseButtonPress:
 473     case QEvent::MouseButtonRelease:
 474     case QEvent::MouseMove:
 475 //         kDebug(5011) << "mouseEvent";
 476         mouseEventHandler(static_cast<QMouseEvent*>(event));
 477         return true;
 478         break;
 479     case QEvent::Wheel:
 480 //         kDebug(5011) << "wheelEvent";
 481         wheelEventHandler(static_cast<QWheelEvent*>(event));
 482         return true;
 483         break;
 484     case QEvent::WindowActivate: //input panel may have been closed, prevent IM from interfering with hardware keyboard
 485         setAttribute(Qt::WA_InputMethodEnabled, false);
 486         //fall through
 487     default:
 488         return RemoteView::event(event);
 489     }
 490 }
 491
 492 //call with e == 0 to flush held events
 493 void VncView::mouseEventHandler(QMouseEvent *e)
 494 {
 495         static bool tap_detected = false;
 496         static bool double_tap_detected = false;
 497         static bool tap_drag_detected = false;
 498         static QTime press_time;
 499         static QTime up_time; //used for double clicks/tap&drag, for time after first tap
 500
 501         if(!e) { //flush held taps
 502                 if(tap_detected) {
 503                         m_buttonMask |= 0x01;
 504                         vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 505                         m_buttonMask &= 0xfe;
 506                         vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 507                         tap_detected = false;
 508                 } else if(double_tap_detected and press_time.elapsed() > TAP_PRESS_TIME) { //got tap + another press -> tap & drag
 509                         m_buttonMask |= 0x01;
 510                         vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 511                         double_tap_detected = false;
 512                         tap_drag_detected = true;
 513                 }
 514
 515                 return;
 516         }
 517
 518         if(e->x() < 0 or e->y() < 0) { //QScrollArea tends to send invalid events sometimes...
 519                 e->ignore();
 520                 return;
 521         }
 522
 523         cursor_x = qRound(e->x()/m_horizontalFactor);
 524         cursor_y = qRound(e->y()/m_verticalFactor);
 525         vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask); // plain move event
 526
 527         if(!disable_tapping and e->button() == Qt::LeftButton) { //implement touchpad-like input for left button
 528                 if(e->type() == QEvent::MouseButtonPress or e->type() == QEvent::MouseButtonDblClick) {
 529                         press_time.start();
 530                         if(tap_detected and up_time.elapsed() < DOUBLE_TAP_UP_TIME) {
 531                                 tap_detected = false;
 532                                 double_tap_detected = true;
 533
 534                                 QTimer::singleShot(TAP_PRESS_TIME, this, SLOT(mouseEventHandler()));
 535                         }
 536                 } else if(e->type() == QEvent::MouseButtonRelease) {
 537                         if(tap_drag_detected) {
 538                                 m_buttonMask &= 0xfe;
 539                                 vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 540                                 tap_drag_detected = false;
 541                         } else if(double_tap_detected) { //double click
 542                                 double_tap_detected = false;
 543
 544                                 m_buttonMask |= 0x01;
 545                                 vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 546                                 m_buttonMask &= 0xfe;
 547                                 vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 548                                 m_buttonMask |= 0x01;
 549                                 vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 550                                 m_buttonMask &= 0xfe;
 551                                 vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 552                         } else if(press_time.elapsed() < TAP_PRESS_TIME) { //tap
 553                                 up_time.start();
 554                                 tap_detected = true;
 555                                 QTimer::singleShot(DOUBLE_TAP_UP_TIME, this, SLOT(mouseEventHandler()));
 556                         }
 557
 558                 }
 559         } else { //middle or right button, send directly
 560                 if ((e->type() == QEvent::MouseButtonPress)) {
 561                     if (e->button() & Qt::MidButton)
 562                         m_buttonMask |= 0x02;
 563                     if (e->button() & Qt::RightButton)
 564                         m_buttonMask |= 0x04;
 565                 } else if (e->type() == QEvent::MouseButtonRelease) {
 566                     if (e->button() & Qt::MidButton)
 567                         m_buttonMask &= 0xfd;
 568                     if (e->button() & Qt::RightButton)
 569                         m_buttonMask &= 0xfb;
 570                 }
 571                 vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 572         }
 573
 574         //prevent local cursor artifacts
 575         static int old_cursor_x = cursor_x;
 576         static int old_cursor_y = cursor_y;
 577         if(((m_dotCursorState == CursorOn) || m_forceLocalCursor)
 578         and (cursor_x != old_cursor_x or cursor_y != old_cursor_y)) {
 579                 //clear last position
 580                 repaint(old_cursor_x*m_horizontalFactor - CURSOR_SIZE/2, old_cursor_y*m_verticalFactor - CURSOR_SIZE/2, CURSOR_SIZE, CURSOR_SIZE);
 581                 //and refresh new one
 582                 repaint(cursor_x*m_horizontalFactor - CURSOR_SIZE/2, cursor_y*m_verticalFactor - CURSOR_SIZE/2, CURSOR_SIZE, CURSOR_SIZE);
 583
 584                 old_cursor_x = cursor_x; old_cursor_y = cursor_y;
 585         }
 586 }
 587
 588 void VncView::wheelEventHandler(QWheelEvent *event)
 589 {
 590     int eb = 0;
 591     if (event->delta() < 0)
 592         eb |= 0x10;
 593     else
 594         eb |= 0x8;
 595
 596     const int x = qRound(event->x() / m_horizontalFactor);
 597     const int y = qRound(event->y() / m_verticalFactor);
 598
 599     vncThread.mouseEvent(x, y, eb | m_buttonMask);
 600     vncThread.mouseEvent(x, y, m_buttonMask);
 601 }
 602
 603 void VncView::keyEventHandler(QKeyEvent *e)
 604 {
 605     // strip away autorepeating KeyRelease; see bug #206598
 606     if (e->isAutoRepeat() && (e->type() == QEvent::KeyRelease)) {
 607         return;
 608     }
 609
 610 // parts of this code are based on http://italc.sourcearchive.com/documentation/1.0.9.1/vncview_8cpp-source.html
 611     rfbKeySym k = e->nativeVirtualKey();
 612
 613     // we do not handle Key_Backtab separately as the Shift-modifier
 614     // is already enabled
 615     if (e->key() == Qt::Key_Backtab) {
 616         k = XK_Tab;
 617     }
 618
 619     const bool pressed = (e->type() == QEvent::KeyPress);
 620
 621 #ifdef Q_WS_MAEMO_5
 622     //don't send ISO_Level3_Shift (would break things like Win+0-9)
 623     //also enable IM so symbol key works
 624     if(k == 0xfe03) {
 625             setAttribute(Qt::WA_InputMethodEnabled, pressed);
 626             e->ignore();
 627             return;
 628     }
 629 #endif
 630
 631     // handle modifiers
 632     if (k == XK_Shift_L || k == XK_Control_L || k == XK_Meta_L || k == XK_Alt_L) {
 633         if (pressed) {
 634             m_mods[k] = true;
 635         } else if (m_mods.contains(k)) {
 636             m_mods.remove(k);
 637         } else {
 638             unpressModifiers();
 639         }
 640     }
 641
 642
 643         int current_zoom = -1;
 644         if(e->key() == Qt::Key_F8)
 645                 current_zoom = left_zoom;
 646         else if(e->key() == Qt::Key_F7)
 647                 current_zoom = right_zoom;
 648         else if (k) {
 649         //      kDebug(5011) << "got '" << e->text() << "'.";
 650                 vncThread.keyEvent(k, pressed);
 651         } else {
 652                 kDebug(5011) << "nativeVirtualKey() for '" << e->text() << "' failed.";
 653                 return;
 654         }
 655
 656         if(current_zoom == -1)
 657                 return;
 658
 659         //handle zoom buttons
 660         if(current_zoom == 0) { //left click
 661                 if(pressed)
 662                         m_buttonMask |= 0x01;
 663                 else
 664                         m_buttonMask &= 0xfe;
 665                 vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 666         } else if(current_zoom == 1) { //right click
 667                 if(pressed)
 668                         m_buttonMask |= 0x04;
 669                 else
 670                         m_buttonMask &= 0xfb;
 671                 vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 672         } else if(current_zoom == 2) { //middle click
 673                 if(pressed)
 674                         m_buttonMask |= 0x02;
 675                 else
 676                         m_buttonMask &= 0xfd;
 677                 vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 678         } else if(current_zoom == 3 and pressed) { //wheel up
 679                 int eb = 0x8;
 680                 vncThread.mouseEvent(cursor_x, cursor_y, eb | m_buttonMask);
 681                 vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 682         } else if(current_zoom == 4 and pressed) { //wheel down
 683                 int eb = 0x10;
 684                 vncThread.mouseEvent(cursor_x, cursor_y, eb | m_buttonMask);
 685                 vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 686         } else if(current_zoom == 5) { //page up
 687                 vncThread.keyEvent(0xff55, pressed);
 688         } else if(current_zoom == 6) { //page down
 689                 vncThread.keyEvent(0xff56, pressed);
 690         }
 691 }
 692
 693 void VncView::unpressModifiers()
 694 {
 695     const QList<unsigned int> keys = m_mods.keys();
 696     QList<unsigned int>::const_iterator it = keys.constBegin();
 697     while (it != keys.end()) {
 698         vncThread.keyEvent(*it, false);
 699         it++;
 700     }
 701     m_mods.clear();
 702 }
 703
 704 void VncView::clipboardSelectionChanged()
 705 {
 706     if (m_status != Connected)
 707         return;
 708
 709     if (m_clipboard->ownsSelection() || m_dontSendClipboard)
 710         return;
 711
 712     const QString text = m_clipboard->text(QClipboard::Selection);
 713
 714     vncThread.clientCut(text);
 715 }
 716
 717 void VncView::clipboardDataChanged()
 718 {
 719     if (m_status != Connected)
 720         return;
 721
 722     if (m_clipboard->ownsClipboard() || m_dontSendClipboard)
 723         return;
 724
 725     const QString text = m_clipboard->text(QClipboard::Clipboard);
 726
 727     vncThread.clientCut(text);
 728 }
 729
 730 //fake key events
 731 void VncView::sendKey(Qt::Key key)
 732 {
 733         //convert Qt::Key into x11 keysym
 734         int k = 0;
 735         switch(key) {
 736         case Qt::Key_Escape:
 737                 k = 0xff1b;
 738                 break;
 739         case Qt::Key_Tab:
 740                 k = 0xff09;
 741                 break;
 742         case Qt::Key_PageUp:
 743                 k = 0xff55;
 744                 break;
 745         case Qt::Key_PageDown:
 746                 k = 0xff56;
 747                 break;
 748         case Qt::Key_Return:
 749                 k = 0xff0d;
 750                 break;
 751         case Qt::Key_Insert:
 752                 k = 0xff63;
 753                 break;
 754         case Qt::Key_Delete:
 755                 k = 0xffff;
 756                 break;
 757         case Qt::Key_Home:
 758                 k = 0xff50;
 759                 break;
 760         case Qt::Key_End:
 761                 k = 0xff57;
 762                 break;
 763         case Qt::Key_Backspace:
 764                 k = 0xff08;
 765                 break;
 766         case Qt::Key_F1:
 767         case Qt::Key_F2:
 768         case Qt::Key_F3:
 769         case Qt::Key_F4:
 770         case Qt::Key_F5:
 771         case Qt::Key_F6:
 772         case Qt::Key_F7:
 773         case Qt::Key_F8:
 774         case Qt::Key_F9:
 775         case Qt::Key_F10:
 776         case Qt::Key_F11:
 777         case Qt::Key_F12:
 778                 k = 0xffbe + int(key - Qt::Key_F1);
 779                 break;
 780         case Qt::Key_Pause:
 781                 k = 0xff13;
 782                 break;
 783         case Qt::Key_Print:
 784                 k = 0xff61;
 785                 break;
 786         case Qt::Key_Menu:
 787                 k = 0xff67;
 788                 break;
 789         case Qt::Key_Meta:
 790         case Qt::MetaModifier:
 791                 k = XK_Super_L;
 792                 break;
 793         case Qt::Key_Alt:
 794         case Qt::AltModifier:
 795                 k = XK_Alt_L;
 796                 break;
 797         case Qt::Key_Control:
 798         case Qt::ControlModifier:
 799                 k = XK_Control_L;
 800                 break;
 801         default:
 802                 kDebug(5011) << "sendKey(): Unhandled Qt::Key value " << key;
 803                 return;
 804         }
 805
 806         if (k == XK_Shift_L || k == XK_Control_L || k == XK_Meta_L || k == XK_Alt_L || k == XK_Super_L) {
 807                 if (m_mods.contains(k)) { //release
 808                         m_mods.remove(k);
 809                         vncThread.keyEvent(k, false);
 810                 } else { //press
 811                         m_mods[k] = true;
 812                         vncThread.keyEvent(k, true);
 813                 }
 814         } else { //normal key
 815                 vncThread.keyEvent(k, true);
 816                 vncThread.keyEvent(k, false);
 817         }
 818 }
 819
 820 void VncView::sendKeySequence(QKeySequence keys)
 821 {
 822         Q_ASSERT(keys.count() <= 1); //we can only handle a single combination
 823
 824         //to get at individual key presses, we split 'keys' into its components
 825         QList<int> key_list;
 826         int pos = 0;
 827         while(true) {
 828                 QString k = keys.toString().section('+', pos, pos);
 829                 if(k.isEmpty())
 830                         break;
 831
 832                 //kDebug(5011) << "found key: " << k;
 833                 if(k == "Alt") {
 834                         key_list.append(Qt::Key_Alt);
 835                 } else if(k == "Ctrl") {
 836                         key_list.append(Qt::Key_Control);
 837                 } else if(k == "Meta") {
 838                         key_list.append(Qt::Key_Meta);
 839                 } else {
 840                         key_list.append(QKeySequence(k)[0]);
 841                 }
 842
 843                 pos++;
 844         }
 845
 846         for(int i = 0; i < key_list.count(); i++)
 847                 sendKey(Qt::Key(key_list.at(i)));
 848
 849         //release modifiers (everything before final key)
 850         for(int i = key_list.count()-2; i >= 0; i--)
 851                 sendKey(Qt::Key(key_list.at(i)));
 852 }
 853
 854 void VncView::reloadSettings()
 855 {
 856         QSettings settings;
 857         left_zoom = settings.value("left_zoom", 0).toInt();
 858         right_zoom = settings.value("right_zoom", 1).toInt();
 859         disable_tapping = settings.value("disable_tapping", false).toBool();
 860
 861         bool always_show_local_cursor = settings.value("always_show_local_cursor", false).toBool();
 862         if(always_show_local_cursor)
 863                 showDotCursor(CursorOn);
 864
 865         enableScaling(true);
 866 }
 867
 868 //convert commitString into keyevents
 869 void VncView::inputMethodEvent(QInputMethodEvent *event)
 870 {
 871         //TODO handle replacements
 872         //NOTE for the return key to work Qt needs to enable multiline input, which only works for Q(Plain)TextEdit
 873
 874         //kDebug(5011) << event->commitString() << "|" << event->preeditString() << "|" << event->replacementLength() << "|" << event->replacementStart();
 875         QString letters = event->commitString();
 876         for(int i = 0; i < letters.length(); i++) {
 877                 char k = letters.at(i).toLatin1(); //works with all 'normal' keys, not umlauts.
 878                 if(!k) {
 879                         kDebug(5011) << "unhandled key";
 880                         continue;
 881                 }
 882                 vncThread.keyEvent(k, true);
 883                 vncThread.keyEvent(k, false);
 884         }
 885 }
 886
 887
 888 #include "moc_vncview.cpp"