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