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