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 VncView::VncView(QWidget *parent, const KUrl &url, RemoteView::Quality quality)
  56         : RemoteView(parent),
  57         m_initDone(false),
  58         m_buttonMask(0),
  59         cursor_x(0),
  60         cursor_y(0),
  61         m_repaint(false),
  62         m_quitFlag(false),
  63         m_firstPasswordTry(true),
  64         m_dontSendClipboard(false),
  65         m_horizontalFactor(1.0),
  66         m_verticalFactor(1.0),
  67         m_forceLocalCursor(false),
  68         force_full_repaint(false),
  69         quality(quality)
  70 {
  71     m_url = url;
  72     m_host = url.host();
  73     m_port = url.port();
  74
  75     connect(&vncThread, SIGNAL(imageUpdated(int, int, int, int)), this, SLOT(updateImage(int, int, int, int)), Qt::BlockingQueuedConnection);
  76     connect(&vncThread, SIGNAL(gotCut(const QString&)), this, SLOT(setCut(const QString&)), Qt::BlockingQueuedConnection);
  77     connect(&vncThread, SIGNAL(passwordRequest()), this, SLOT(requestPassword()), Qt::BlockingQueuedConnection);
  78     connect(&vncThread, SIGNAL(outputErrorMessage(QString)), this, SLOT(outputErrorMessage(QString)));
  79
  80     m_clipboard = QApplication::clipboard();
  81     connect(m_clipboard, SIGNAL(selectionChanged()), this, SLOT(clipboardSelectionChanged()));
  82     connect(m_clipboard, SIGNAL(dataChanged()), this, SLOT(clipboardDataChanged()));
  83
  84     reloadSettings();
  85 }
  86
  87 VncView::~VncView()
  88 {
  89     unpressModifiers();
  90
  91     // Disconnect all signals so that we don't get any more callbacks from the client thread
  92     vncThread.disconnect();
  93
  94     startQuitting();
  95 }
  96
  97 void VncView::forceFullRepaint()
  98 {
  99         force_full_repaint = true;
 100         repaint();
 101 }
 102
 103 bool VncView::eventFilter(QObject *obj, QEvent *event)
 104 {
 105     if (m_viewOnly) {
 106         if (event->type() == QEvent::KeyPress ||
 107                 event->type() == QEvent::KeyRelease ||
 108                 event->type() == QEvent::MouseButtonDblClick ||
 109                 event->type() == QEvent::MouseButtonPress ||
 110                 event->type() == QEvent::MouseButtonRelease ||
 111                 event->type() == QEvent::Wheel ||
 112                 event->type() == QEvent::MouseMove)
 113             return true;
 114     }
 115     return RemoteView::eventFilter(obj, event);
 116 }
 117
 118 QSize VncView::framebufferSize()
 119 {
 120     return m_frame.size();
 121 }
 122
 123 QSize VncView::sizeHint() const
 124 {
 125     return size();
 126 }
 127
 128 QSize VncView::minimumSizeHint() const
 129 {
 130     return size();
 131 }
 132
 133 void VncView::scaleResize(int w, int h)
 134 {
 135     RemoteView::scaleResize(w, h);
 136
 137     kDebug(5011) << "scaleResize(): " <<w << h;
 138     if (m_scale) {
 139         m_verticalFactor = (qreal) h / m_frame.height();
 140         m_horizontalFactor = (qreal) w / m_frame.width();
 141
 142         m_verticalFactor = m_horizontalFactor = qMin(m_verticalFactor, m_horizontalFactor);
 143
 144         const qreal newW = m_frame.width() * m_horizontalFactor;
 145         const qreal newH = m_frame.height() * m_verticalFactor;
 146         /*
 147         setMaximumSize(newW, newH); //This is a hack to force Qt to center the view in the scroll area
 148         //also causes the widget's size to flicker
 149         */
 150         resize(newW, newH);
 151     }
 152 }
 153
 154
 155 void VncView::startQuitting()
 156 {
 157     kDebug(5011) << "about to quit";
 158
 159     const bool connected = status() == RemoteView::Connected;
 160
 161     setStatus(Disconnecting);
 162
 163     m_quitFlag = true;
 164
 165     if (connected) {
 166         vncThread.stop();
 167     }
 168
 169     vncThread.quit();
 170
 171     const bool quitSuccess = vncThread.wait(500);
 172
 173     kDebug(5011) << "startQuitting(): Quit VNC thread success:" << quitSuccess;
 174
 175     setStatus(Disconnected);
 176 }
 177
 178 bool VncView::isQuitting()
 179 {
 180     return m_quitFlag;
 181 }
 182
 183 bool VncView::start()
 184 {
 185     vncThread.setHost(m_host);
 186     vncThread.setPort(m_port);
 187
 188     vncThread.setQuality(quality);
 189
 190     // set local cursor on by default because low quality mostly means slow internet connection
 191     if (quality == RemoteView::Low) {
 192         showDotCursor(RemoteView::CursorOn);
 193     }
 194
 195     setStatus(Connecting);
 196
 197     vncThread.start();
 198     return true;
 199 }
 200
 201 bool VncView::supportsScaling() const
 202 {
 203     return true;
 204 }
 205
 206 bool VncView::supportsLocalCursor() const
 207 {
 208     return true;
 209 }
 210
 211 void VncView::requestPassword()
 212 {
 213     kDebug(5011) << "request password";
 214
 215     setStatus(Authenticating);
 216
 217     if (!m_url.password().isNull()) {
 218         vncThread.setPassword(m_url.password());
 219         return;
 220     }
 221
 222         QSettings settings;
 223         settings.beginGroup("hosts");
 224         QString password = settings.value(QString("%1/password").arg(m_host), "").toString();
 225         //check for saved password
 226         if(m_firstPasswordTry and !password.isEmpty()) {
 227                 kDebug(5011) << "Trying saved password";
 228                 m_firstPasswordTry = false;
 229                 vncThread.setPassword(password);
 230                 return;
 231         }
 232         m_firstPasswordTry = false;
 233
 234         //build dialog
 235         QDialog dialog(this);
 236         dialog.setWindowTitle(tr("Password required"));
 237
 238         QLineEdit passwordbox;
 239         passwordbox.setEchoMode(QLineEdit::Password);
 240         passwordbox.setText(password);
 241         QCheckBox save_password(tr("Save Password"));
 242         save_password.setChecked(!password.isEmpty()); //offer to overwrite saved password
 243         QPushButton ok_button(tr("Done"));
 244         ok_button.setMaximumWidth(100);
 245         connect(&ok_button, SIGNAL(clicked()),
 246                 &dialog, SLOT(accept()));
 247
 248         QHBoxLayout layout1;
 249         QVBoxLayout layout2;
 250         layout2.addWidget(&passwordbox);
 251         layout2.addWidget(&save_password);
 252         layout1.addLayout(&layout2);
 253         layout1.addWidget(&ok_button);
 254         dialog.setLayout(&layout1);
 255
 256         if(dialog.exec()) { //dialog accepted
 257                 password = passwordbox.text();
 258
 259                 if(save_password.isChecked()) {
 260                         kDebug(5011) << "Saving password for host '" << m_host << "'";
 261
 262                         settings.setValue(QString("%1/password").arg(m_host), password);
 263                         settings.sync();
 264                 }
 265
 266                 vncThread.setPassword(password);
 267         } else {
 268                 startQuitting();
 269         }
 270 }
 271
 272 void VncView::outputErrorMessage(const QString &message)
 273 {
 274     kDebug(5011) << message;
 275
 276     if (message == "INTERNAL:APPLE_VNC_COMPATIBILTY") {
 277         setCursor(localDotCursor());
 278         m_forceLocalCursor = true;
 279         return;
 280     }
 281
 282     startQuitting();
 283
 284     emit errorMessage(i18n("VNC failure"), message);
 285 }
 286
 287 void VncView::updateImage(int x, int y, int w, int h)
 288 {
 289         if(!QApplication::focusWidget()) { //no focus, we're probably minimized
 290                 return;
 291         }
 292      //kDebug(5011) << "got update" << width() << height();
 293
 294      /*
 295      static unsigned int frames = 0;
 296      static unsigned int updates = 0;
 297      static QTime time = QTime::currentTime();
 298      updates++;
 299      if(updates % 100 == 0)
 300              kDebug(5011) << "u/s: " << updates/double(time.elapsed()) * 1000.0;
 301 if(x == 0 and y == 0) {
 302         frames++;
 303      if(frames % 100 == 0)
 304              kDebug(5011) << "f/s: " << frames/double(time.elapsed()) * 1000.0;
 305 }
 306 */
 307
 308     m_x = x;
 309     m_y = y;
 310     m_w = w;
 311     m_h = h;
 312
 313     if (m_horizontalFactor != 1.0 || m_verticalFactor != 1.0) {
 314         // If the view is scaled, grow the update rectangle to avoid artifacts
 315         int x_extrapixels = 1.0/m_horizontalFactor+1;
 316         int y_extrapixels = 1.0/m_verticalFactor+1;
 317
 318         m_x-=x_extrapixels;
 319         m_y-=y_extrapixels;
 320         m_w+=2*x_extrapixels;
 321         m_h+=2*y_extrapixels;
 322     }
 323
 324     m_frame = vncThread.image();
 325
 326     if (!m_initDone) {
 327         setAttribute(Qt::WA_StaticContents);
 328         setAttribute(Qt::WA_OpaquePaintEvent);
 329         installEventFilter(this);
 330
 331         setCursor(((m_dotCursorState == CursorOn) || m_forceLocalCursor) ? localDotCursor() : Qt::BlankCursor);
 332
 333         setMouseTracking(true); // get mouse events even when there is no mousebutton pressed
 334         setFocusPolicy(Qt::WheelFocus);
 335         setStatus(Connected);
 336 //         emit framebufferSizeChanged(m_frame.width(), m_frame.height());
 337         emit connected();
 338
 339         if (m_scale) {
 340             if (parentWidget())
 341                 scaleResize(parentWidget()->width(), parentWidget()->height());
 342             else
 343                 scaleResize(width(), height());
 344         }
 345
 346         m_initDone = true;
 347
 348     }
 349
 350         static QSize old_frame_size = QSize();
 351     if ((y == 0 && x == 0) && (m_frame.size() != old_frame_size)) {
 352             old_frame_size = m_frame.size();
 353         kDebug(5011) << "Updating framebuffer size";
 354         if (m_scale) {
 355             //setMaximumSize(QSize(QWIDGETSIZE_MAX, QWIDGETSIZE_MAX));
 356             if (parentWidget())
 357                 scaleResize(parentWidget()->width(), parentWidget()->height());
 358         } else {
 359             kDebug(5011) << "Resizing: " << m_frame.width() << m_frame.height();
 360             resize(m_frame.width(), m_frame.height());
 361             //setMaximumSize(m_frame.width(), m_frame.height()); //This is a hack to force Qt to center the view in the scroll area
 362             //setMinimumSize(m_frame.width(), m_frame.height());
 363         }
 364         emit framebufferSizeChanged(m_frame.width(), m_frame.height());
 365     }
 366
 367     m_repaint = true;
 368     repaint(qRound(m_x * m_horizontalFactor), qRound(m_y * m_verticalFactor), qRound(m_w * m_horizontalFactor), qRound(m_h * m_verticalFactor));
 369     m_repaint = false;
 370 }
 371
 372 void VncView::setViewOnly(bool viewOnly)
 373 {
 374     RemoteView::setViewOnly(viewOnly);
 375
 376     m_dontSendClipboard = viewOnly;
 377
 378     if (viewOnly)
 379         setCursor(Qt::ArrowCursor);
 380     else
 381         setCursor(m_dotCursorState == CursorOn ? localDotCursor() : Qt::BlankCursor);
 382 }
 383
 384 void VncView::showDotCursor(DotCursorState state)
 385 {
 386     RemoteView::showDotCursor(state);
 387
 388     setCursor(state == CursorOn ? localDotCursor() : Qt::BlankCursor);
 389 }
 390
 391 void VncView::enableScaling(bool scale)
 392 {
 393     RemoteView::enableScaling(scale);
 394
 395     if (scale) {
 396         //setMaximumSize(QSize(QWIDGETSIZE_MAX, QWIDGETSIZE_MAX));
 397         //setMinimumSize(1, 1);
 398         if (parentWidget())
 399             scaleResize(parentWidget()->width(), parentWidget()->height());
 400             else
 401                 scaleResize(width(), height());
 402     } else {
 403         m_verticalFactor = 1.0;
 404         m_horizontalFactor = 1.0;
 405
 406         //setMaximumSize(m_frame.width(), m_frame.height()); //This is a hack to force Qt to center the view in the scroll area
 407         //setMinimumSize(m_frame.width(), m_frame.height());
 408         resize(m_frame.width(), m_frame.height());
 409     }
 410 }
 411
 412 void VncView::setCut(const QString &text)
 413 {
 414     m_dontSendClipboard = true;
 415     m_clipboard->setText(text, QClipboard::Clipboard);
 416     m_clipboard->setText(text, QClipboard::Selection);
 417     m_dontSendClipboard = false;
 418 }
 419
 420 void VncView::paintEvent(QPaintEvent *event)
 421 {
 422      //kDebug(5011) << "paint event: x: " << m_x << ", y: " << m_y << ", w: " << m_w << ", h: " << m_h;
 423     if (m_frame.isNull() || m_frame.format() == QImage::Format_Invalid) {
 424         kDebug(5011) << "no valid image to paint";
 425         RemoteView::paintEvent(event);
 426         return;
 427     }
 428
 429     event->accept();
 430
 431     QPainter painter(this);
 432
 433     if (m_repaint and !force_full_repaint) {
 434 //         kDebug(5011) << "normal repaint";
 435         painter.drawImage(QRect(qRound(m_x*m_horizontalFactor), qRound(m_y*m_verticalFactor),
 436                                 qRound(m_w*m_horizontalFactor), qRound(m_h*m_verticalFactor)),
 437                           m_frame.copy(m_x, m_y, m_w, m_h).scaled(qRound(m_w*m_horizontalFactor),
 438                                                                   qRound(m_h*m_verticalFactor),
 439                                                                   Qt::IgnoreAspectRatio, Qt::SmoothTransformation));
 440     } else {
 441          //kDebug(5011) << "resize repaint";
 442         QRect rect = event->rect();
 443         if (!force_full_repaint and (rect.width() != width() || rect.height() != height())) {
 444           //   kDebug(5011) << "Partial repaint";
 445             const int sx = rect.x()/m_horizontalFactor;
 446             const int sy = rect.y()/m_verticalFactor;
 447             const int sw = rect.width()/m_horizontalFactor;
 448             const int sh = rect.height()/m_verticalFactor;
 449             painter.drawImage(rect,
 450                               m_frame.copy(sx, sy, sw, sh).scaled(rect.width(), rect.height(),
 451                                                                   Qt::IgnoreAspectRatio, Qt::SmoothTransformation));
 452         } else {
 453              kDebug(5011) << "Full repaint" << width() << height() << m_frame.width() << m_frame.height();
 454             painter.drawImage(QRect(0, 0, width(), height()),
 455                               m_frame.scaled(m_frame.width() * m_horizontalFactor, m_frame.height() * m_verticalFactor,
 456                                              Qt::IgnoreAspectRatio, Qt::SmoothTransformation));
 457             force_full_repaint = false;
 458         }
 459     }
 460
 461         //draw local cursor ourselves, normal mouse pointer doesn't deal with scrolling
 462         if((m_dotCursorState == CursorOn) || m_forceLocalCursor) {
 463 #if QT_VERSION >= 0x040500
 464                 painter.setCompositionMode(QPainter::RasterOp_SourceXorDestination);
 465 #endif
 466                 //rectangle size is 5px = 4px + 1px pen width
 467                 painter.drawRect(cursor_x*m_horizontalFactor - 2, cursor_y*m_verticalFactor - 2, 4, 4);
 468         }
 469
 470     RemoteView::paintEvent(event);
 471 }
 472
 473 void VncView::resizeEvent(QResizeEvent *event)
 474 {
 475     RemoteView::resizeEvent(event);
 476     scaleResize(event->size().width(), event->size().height());
 477     forceFullRepaint();
 478 }
 479
 480 bool VncView::event(QEvent *event)
 481 {
 482     switch (event->type()) {
 483     case QEvent::KeyPress:
 484     case QEvent::KeyRelease:
 485 //         kDebug(5011) << "keyEvent";
 486         keyEventHandler(static_cast<QKeyEvent*>(event));
 487         return true;
 488         break;
 489     case QEvent::MouseButtonDblClick:
 490     case QEvent::MouseButtonPress:
 491     case QEvent::MouseButtonRelease:
 492     case QEvent::MouseMove:
 493 //         kDebug(5011) << "mouseEvent";
 494         mouseEventHandler(static_cast<QMouseEvent*>(event));
 495         return true;
 496         break;
 497     case QEvent::Wheel:
 498 //         kDebug(5011) << "wheelEvent";
 499         wheelEventHandler(static_cast<QWheelEvent*>(event));
 500         return true;
 501         break;
 502     case QEvent::WindowActivate: //input panel may have been closed, prevent IM from interfering with hardware keyboard
 503         setAttribute(Qt::WA_InputMethodEnabled, false);
 504         //fall through
 505     default:
 506         return RemoteView::event(event);
 507     }
 508 }
 509
 510 //call with e == 0 to flush held events
 511 void VncView::mouseEventHandler(QMouseEvent *e)
 512 {
 513         static bool tap_detected = false;
 514         static bool double_tap_detected = false;
 515         static bool tap_drag_detected = false;
 516         static QTime press_time;
 517         static QTime up_time; //used for double clicks/tap&drag, for time after first tap
 518
 519         const int TAP_PRESS_TIME = 180;
 520         const int DOUBLE_TAP_UP_TIME = 500;
 521
 522         if(!e) { //flush held taps
 523                 if(tap_detected) {
 524                         m_buttonMask |= 0x01;
 525                         vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 526                         m_buttonMask &= 0xfe;
 527                         vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 528                         tap_detected = false;
 529                 } else if(double_tap_detected and press_time.elapsed() > TAP_PRESS_TIME) { //got tap + another press -> tap & drag
 530                         m_buttonMask |= 0x01;
 531                         vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 532                         double_tap_detected = false;
 533                         tap_drag_detected = true;
 534                 }
 535
 536                 return;
 537         }
 538
 539         if(e->x() < 0 or e->y() < 0) { //QScrollArea tends to send invalid events sometimes...
 540                 e->ignore();
 541                 return;
 542         }
 543
 544         cursor_x = qRound(e->x()/m_horizontalFactor);
 545         cursor_y = qRound(e->y()/m_verticalFactor);
 546         vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask); // plain move event
 547
 548         if(!disable_tapping and e->button() == Qt::LeftButton) { //implement touchpad-like input for left button
 549                 if(e->type() == QEvent::MouseButtonPress or e->type() == QEvent::MouseButtonDblClick) {
 550                         press_time.start();
 551                         if(tap_detected and up_time.elapsed() < DOUBLE_TAP_UP_TIME) {
 552                                 tap_detected = false;
 553                                 double_tap_detected = true;
 554
 555                                 QTimer::singleShot(TAP_PRESS_TIME, this, SLOT(mouseEventHandler()));
 556                         }
 557                 } else if(e->type() == QEvent::MouseButtonRelease) {
 558                         if(tap_drag_detected) {
 559                                 m_buttonMask &= 0xfe;
 560                                 vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 561                                 tap_drag_detected = false;
 562                         } else if(double_tap_detected) { //double click
 563                                 double_tap_detected = false;
 564
 565                                 m_buttonMask |= 0x01;
 566                                 vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 567                                 m_buttonMask &= 0xfe;
 568                                 vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 569                                 m_buttonMask |= 0x01;
 570                                 vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 571                                 m_buttonMask &= 0xfe;
 572                                 vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 573                         } else if(press_time.elapsed() < TAP_PRESS_TIME) { //tap
 574                                 up_time.start();
 575                                 tap_detected = true;
 576                                 QTimer::singleShot(DOUBLE_TAP_UP_TIME, this, SLOT(mouseEventHandler()));
 577                         }
 578
 579                 }
 580         } else { //middle or right button, send directly
 581                 if ((e->type() == QEvent::MouseButtonPress)) {
 582                     if (e->button() & Qt::MidButton)
 583                         m_buttonMask |= 0x02;
 584                     if (e->button() & Qt::RightButton)
 585                         m_buttonMask |= 0x04;
 586                 } else if (e->type() == QEvent::MouseButtonRelease) {
 587                     if (e->button() & Qt::MidButton)
 588                         m_buttonMask &= 0xfd;
 589                     if (e->button() & Qt::RightButton)
 590                         m_buttonMask &= 0xfb;
 591                 }
 592                 vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 593         }
 594
 595         //prevent local cursor artifacts
 596         static int old_cursor_x = cursor_x;
 597         static int old_cursor_y = cursor_y;
 598         if(((m_dotCursorState == CursorOn) || m_forceLocalCursor)
 599         and (cursor_x != old_cursor_x or cursor_y != old_cursor_y)) {
 600                 //clear last position (plus a few extra pixels)
 601                 repaint(old_cursor_x*m_horizontalFactor - 3, old_cursor_y*m_verticalFactor - 3, 7, 7);
 602                 //and refresh new one
 603                 repaint(cursor_x*m_horizontalFactor - 3, cursor_y*m_verticalFactor - 3, 7, 7);
 604
 605                 old_cursor_x = cursor_x; old_cursor_y = cursor_y;
 606         }
 607 }
 608
 609 void VncView::wheelEventHandler(QWheelEvent *event)
 610 {
 611     int eb = 0;
 612     if (event->delta() < 0)
 613         eb |= 0x10;
 614     else
 615         eb |= 0x8;
 616
 617     const int x = qRound(event->x() / m_horizontalFactor);
 618     const int y = qRound(event->y() / m_verticalFactor);
 619
 620     vncThread.mouseEvent(x, y, eb | m_buttonMask);
 621     vncThread.mouseEvent(x, y, m_buttonMask);
 622 }
 623
 624 void VncView::keyEventHandler(QKeyEvent *e)
 625 {
 626     // strip away autorepeating KeyRelease; see bug #206598
 627     if (e->isAutoRepeat() && (e->type() == QEvent::KeyRelease)) {
 628         return;
 629     }
 630
 631 // parts of this code are based on http://italc.sourcearchive.com/documentation/1.0.9.1/vncview_8cpp-source.html
 632     rfbKeySym k = e->nativeVirtualKey();
 633
 634     // we do not handle Key_Backtab separately as the Shift-modifier
 635     // is already enabled
 636     if (e->key() == Qt::Key_Backtab) {
 637         k = XK_Tab;
 638     }
 639
 640     const bool pressed = (e->type() == QEvent::KeyPress);
 641
 642 #ifdef Q_WS_MAEMO_5
 643     //don't send ISO_Level3_Shift (would break things like Win+0-9)
 644     //also enable IM so symbol key works
 645     if(k == 0xfe03) {
 646             setAttribute(Qt::WA_InputMethodEnabled, pressed);
 647             e->ignore();
 648             return;
 649     }
 650 #endif
 651
 652     // handle modifiers
 653     if (k == XK_Shift_L || k == XK_Control_L || k == XK_Meta_L || k == XK_Alt_L) {
 654         if (pressed) {
 655             m_mods[k] = true;
 656         } else if (m_mods.contains(k)) {
 657             m_mods.remove(k);
 658         } else {
 659             unpressModifiers();
 660         }
 661     }
 662
 663
 664         int current_zoom = -1;
 665         if(e->key() == Qt::Key_F8)
 666                 current_zoom = left_zoom;
 667         else if(e->key() == Qt::Key_F7)
 668                 current_zoom = right_zoom;
 669         else if (k) {
 670         //      kDebug(5011) << "got '" << e->text() << "'.";
 671                 vncThread.keyEvent(k, pressed);
 672         } else {
 673                 kDebug(5011) << "nativeVirtualKey() for '" << e->text() << "' failed.";
 674                 return;
 675         }
 676
 677         if(current_zoom == -1)
 678                 return;
 679
 680         //handle zoom buttons
 681         if(current_zoom == 0) { //left click
 682                 if(pressed)
 683                         m_buttonMask |= 0x01;
 684                 else
 685                         m_buttonMask &= 0xfe;
 686                 vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 687         } else if(current_zoom == 1) { //right click
 688                 if(pressed)
 689                         m_buttonMask |= 0x04;
 690                 else
 691                         m_buttonMask &= 0xfb;
 692                 vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 693         } else if(current_zoom == 2) { //middle click
 694                 if(pressed)
 695                         m_buttonMask |= 0x02;
 696                 else
 697                         m_buttonMask &= 0xfd;
 698                 vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 699         } else if(current_zoom == 3 and pressed) { //wheel up
 700                 int eb = 0x8;
 701                 vncThread.mouseEvent(cursor_x, cursor_y, eb | m_buttonMask);
 702                 vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 703         } else if(current_zoom == 4 and pressed) { //wheel down
 704                 int eb = 0x10;
 705                 vncThread.mouseEvent(cursor_x, cursor_y, eb | m_buttonMask);
 706                 vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 707         } else if(current_zoom == 5) { //page up
 708                 vncThread.keyEvent(0xff55, pressed);
 709         } else if(current_zoom == 6) { //page down
 710                 vncThread.keyEvent(0xff56, pressed);
 711         }
 712 }
 713
 714 void VncView::unpressModifiers()
 715 {
 716     const QList<unsigned int> keys = m_mods.keys();
 717     QList<unsigned int>::const_iterator it = keys.constBegin();
 718     while (it != keys.end()) {
 719         vncThread.keyEvent(*it, false);
 720         it++;
 721     }
 722     m_mods.clear();
 723 }
 724
 725 void VncView::clipboardSelectionChanged()
 726 {
 727     if (m_status != Connected)
 728         return;
 729
 730     if (m_clipboard->ownsSelection() || m_dontSendClipboard)
 731         return;
 732
 733     const QString text = m_clipboard->text(QClipboard::Selection);
 734
 735     vncThread.clientCut(text);
 736 }
 737
 738 void VncView::clipboardDataChanged()
 739 {
 740     if (m_status != Connected)
 741         return;
 742
 743     if (m_clipboard->ownsClipboard() || m_dontSendClipboard)
 744         return;
 745
 746     const QString text = m_clipboard->text(QClipboard::Clipboard);
 747
 748     vncThread.clientCut(text);
 749 }
 750
 751 //fake key events
 752 void VncView::sendKey(Qt::Key key)
 753 {
 754         //convert Qt::Key into x11 keysym
 755         int k = 0;
 756         switch(key) {
 757         case Qt::Key_Escape:
 758                 k = 0xff1b;
 759                 break;
 760         case Qt::Key_Tab:
 761                 k = 0xff09;
 762                 break;
 763         case Qt::Key_PageUp:
 764                 k = 0xff55;
 765                 break;
 766         case Qt::Key_PageDown:
 767                 k = 0xff56;
 768                 break;
 769         case Qt::Key_Return:
 770                 k = 0xff0d;
 771                 break;
 772         case Qt::Key_Insert:
 773                 k = 0xff63;
 774                 break;
 775         case Qt::Key_Delete:
 776                 k = 0xffff;
 777                 break;
 778         case Qt::Key_Home:
 779                 k = 0xff50;
 780                 break;
 781         case Qt::Key_End:
 782                 k = 0xff57;
 783                 break;
 784         case Qt::Key_Backspace:
 785                 k = 0xff08;
 786                 break;
 787         case Qt::Key_F1:
 788         case Qt::Key_F2:
 789         case Qt::Key_F3:
 790         case Qt::Key_F4:
 791         case Qt::Key_F5:
 792         case Qt::Key_F6:
 793         case Qt::Key_F7:
 794         case Qt::Key_F8:
 795         case Qt::Key_F9:
 796         case Qt::Key_F10:
 797         case Qt::Key_F11:
 798         case Qt::Key_F12:
 799                 k = 0xffbe + int(key - Qt::Key_F1);
 800                 break;
 801         case Qt::Key_Pause:
 802                 k = 0xff13;
 803                 break;
 804         case Qt::Key_Print:
 805                 k = 0xff61;
 806                 break;
 807         case Qt::Key_Menu:
 808                 k = 0xff67;
 809                 break;
 810         case Qt::Key_Meta:
 811         case Qt::MetaModifier:
 812                 k = XK_Super_L;
 813                 break;
 814         case Qt::Key_Alt:
 815         case Qt::AltModifier:
 816                 k = XK_Alt_L;
 817                 break;
 818         case Qt::Key_Control:
 819         case Qt::ControlModifier:
 820                 k = XK_Control_L;
 821                 break;
 822         default:
 823                 kDebug(5011) << "sendKey(): Unhandled Qt::Key value " << key;
 824                 return;
 825         }
 826
 827         if (k == XK_Shift_L || k == XK_Control_L || k == XK_Meta_L || k == XK_Alt_L || k == XK_Super_L) {
 828                 if (m_mods.contains(k)) { //release
 829                         m_mods.remove(k);
 830                         vncThread.keyEvent(k, false);
 831                 } else { //press
 832                         m_mods[k] = true;
 833                         vncThread.keyEvent(k, true);
 834                 }
 835         } else { //normal key
 836                 vncThread.keyEvent(k, true);
 837                 vncThread.keyEvent(k, false);
 838         }
 839 }
 840
 841 void VncView::sendKeySequence(QKeySequence keys)
 842 {
 843         Q_ASSERT(keys.count() <= 1); //we can only handle a single combination
 844
 845         //to get at individual key presses, we split 'keys' into its components
 846         QList<int> key_list;
 847         for(int i = 0; ; i++) {
 848                 QString k = keys.toString().section('+', i, i);
 849                 if(k.isEmpty())
 850                         break;
 851                 //kDebug(5011) << "found key: " << k;
 852                 if(k == "Alt") {
 853                         key_list.append(Qt::Key_Alt);
 854                 } else if(k == "Ctrl") {
 855                         key_list.append(Qt::Key_Control);
 856                 } else if(k == "Meta") {
 857                         key_list.append(Qt::Key_Meta);
 858                 } else {
 859                         key_list.append(QKeySequence(k)[0]);
 860                 }
 861         }
 862
 863         for(int i = 0; i < key_list.count(); i++)
 864                 sendKey(Qt::Key(key_list.at(i)));
 865
 866         //release modifiers (everything before final key)
 867         for(int i = key_list.count()-2; i >= 0; i--)
 868                 sendKey(Qt::Key(key_list.at(i)));
 869 }
 870
 871 void VncView::reloadSettings()
 872 {
 873         QSettings settings;
 874         left_zoom = settings.value("left_zoom", 0).toInt();
 875         right_zoom = settings.value("right_zoom", 1).toInt();
 876         disable_tapping = settings.value("disable_tapping", false).toBool();
 877
 878         bool always_show_local_cursor = settings.value("always_show_local_cursor", false).toBool();
 879         if(always_show_local_cursor)
 880                 showDotCursor(CursorOn);
 881 }
 882
 883 //convert commitString into keyevents
 884 void VncView::inputMethodEvent(QInputMethodEvent *event)
 885 {
 886         //TODO handle replacements
 887         //NOTE for the return key to work Qt needs to enable multiline input, which only works for Q(Plain)TextEdit
 888
 889         //kDebug(5011) << event->commitString() << "|" << event->preeditString() << "|" << event->replacementLength() << "|" << event->replacementStart();
 890         QString letters = event->commitString();
 891         for(int i = 0; i < letters.length(); i++) {
 892                 char k = letters.at(i).toLatin1(); //works with all 'normal' keys, not umlauts.
 893                 if(!k) {
 894                         kDebug(5011) << "unhandled key";
 895                         continue;
 896                 }
 897                 vncThread.keyEvent(k, true);
 898                 vncThread.keyEvent(k, false);
 899         }
 900 }
 901
 902
 903 #include "moc_vncview.cpp"