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