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