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 VncView::VncView(QWidget *parent, const KUrl &url, RemoteView::Quality quality)
  59         : RemoteView(parent),
  60         m_initDone(false),
  61         m_buttonMask(0),
  62         cursor_x(0),
  63         cursor_y(0),
  64         m_repaint(false),
  65         m_quitFlag(false),
  66         m_firstPasswordTry(true),
  67         m_dontSendClipboard(false),
  68         m_horizontalFactor(1.0),
  69         m_verticalFactor(1.0),
  70         m_forceLocalCursor(false),
  71         force_full_repaint(false),
  72         quality(quality)
  73 {
  74     m_url = url;
  75     m_host = url.host();
  76     m_port = url.port();
  77
  78     connect(&vncThread, SIGNAL(imageUpdated(int, int, int, int)), this, SLOT(updateImage(int, int, int, int)), Qt::BlockingQueuedConnection);
  79     connect(&vncThread, SIGNAL(gotCut(const QString&)), this, SLOT(setCut(const QString&)), Qt::BlockingQueuedConnection);
  80     connect(&vncThread, SIGNAL(passwordRequest()), this, SLOT(requestPassword()), Qt::BlockingQueuedConnection);
  81     connect(&vncThread, SIGNAL(outputErrorMessage(QString)), this, SLOT(outputErrorMessage(QString)));
  82
  83     m_clipboard = QApplication::clipboard();
  84     connect(m_clipboard, SIGNAL(selectionChanged()), this, SLOT(clipboardSelectionChanged()));
  85     connect(m_clipboard, SIGNAL(dataChanged()), this, SLOT(clipboardDataChanged()));
  86
  87     reloadSettings();
  88 }
  89
  90 VncView::~VncView()
  91 {
  92     unpressModifiers();
  93
  94     // Disconnect all signals so that we don't get any more callbacks from the client thread
  95     vncThread.disconnect();
  96
  97     startQuitting();
  98 }
  99
 100 void VncView::forceFullRepaint()
 101 {
 102         force_full_repaint = true;
 103         repaint();
 104 }
 105
 106 bool VncView::eventFilter(QObject *obj, QEvent *event)
 107 {
 108     if (m_viewOnly) {
 109         if (event->type() == QEvent::KeyPress ||
 110                 event->type() == QEvent::KeyRelease ||
 111                 event->type() == QEvent::MouseButtonDblClick ||
 112                 event->type() == QEvent::MouseButtonPress ||
 113                 event->type() == QEvent::MouseButtonRelease ||
 114                 event->type() == QEvent::Wheel ||
 115                 event->type() == QEvent::MouseMove)
 116             return true;
 117     }
 118     return RemoteView::eventFilter(obj, event);
 119 }
 120
 121 QSize VncView::framebufferSize()
 122 {
 123     return m_frame.size();
 124 }
 125
 126 QSize VncView::sizeHint() const
 127 {
 128     return size();
 129 }
 130
 131 QSize VncView::minimumSizeHint() const
 132 {
 133     return size();
 134 }
 135
 136 void VncView::scaleResize(int w, int h)
 137 {
 138     RemoteView::scaleResize(w, h);
 139
 140     kDebug(5011) << "scaleResize(): " <<w << h;
 141     if (m_scale) {
 142         m_verticalFactor = (qreal) h / m_frame.height();
 143         m_horizontalFactor = (qreal) w / m_frame.width();
 144
 145         m_verticalFactor = m_horizontalFactor = qMin(m_verticalFactor, m_horizontalFactor);
 146
 147         const qreal newW = m_frame.width() * m_horizontalFactor;
 148         const qreal newH = m_frame.height() * m_verticalFactor;
 149         /*
 150         setMaximumSize(newW, newH); //This is a hack to force Qt to center the view in the scroll area
 151         //also causes the widget's size to flicker
 152         */
 153         resize(newW, newH);
 154     }
 155 }
 156
 157
 158 void VncView::startQuitting()
 159 {
 160     kDebug(5011) << "about to quit";
 161
 162     const bool connected = status() == RemoteView::Connected;
 163
 164     setStatus(Disconnecting);
 165
 166     m_quitFlag = true;
 167
 168     if (connected) {
 169         vncThread.stop();
 170     }
 171
 172     vncThread.quit();
 173
 174     const bool quitSuccess = vncThread.wait(500);
 175
 176     kDebug(5011) << "startQuitting(): Quit VNC thread success:" << quitSuccess;
 177
 178     setStatus(Disconnected);
 179 }
 180
 181 bool VncView::isQuitting()
 182 {
 183     return m_quitFlag;
 184 }
 185
 186 bool VncView::start()
 187 {
 188     vncThread.setHost(m_host);
 189     vncThread.setPort(m_port);
 190
 191     vncThread.setQuality(quality);
 192
 193     // set local cursor on by default because low quality mostly means slow internet connection
 194     if (quality == RemoteView::Low) {
 195         showDotCursor(RemoteView::CursorOn);
 196     }
 197
 198     setStatus(Connecting);
 199
 200     vncThread.start();
 201     return true;
 202 }
 203
 204 bool VncView::supportsScaling() const
 205 {
 206     return true;
 207 }
 208
 209 bool VncView::supportsLocalCursor() const
 210 {
 211     return true;
 212 }
 213
 214 void VncView::requestPassword()
 215 {
 216     kDebug(5011) << "request password";
 217
 218     setStatus(Authenticating);
 219
 220     if (!m_url.password().isNull()) {
 221         vncThread.setPassword(m_url.password());
 222         return;
 223     }
 224
 225         QSettings settings;
 226         settings.beginGroup("hosts");
 227         QString password = settings.value(QString("%1/password").arg(m_host), "").toString();
 228         //check for saved password
 229         if(m_firstPasswordTry and !password.isEmpty()) {
 230                 kDebug(5011) << "Trying saved password";
 231                 m_firstPasswordTry = false;
 232                 vncThread.setPassword(password);
 233                 return;
 234         }
 235         m_firstPasswordTry = false;
 236
 237         //build dialog
 238         QDialog dialog(this);
 239         dialog.setWindowTitle(tr("Password required"));
 240
 241         QLineEdit passwordbox;
 242         passwordbox.setEchoMode(QLineEdit::Password);
 243         passwordbox.setText(password);
 244         QCheckBox save_password(tr("Save Password"));
 245         save_password.setChecked(!password.isEmpty()); //offer to overwrite saved password
 246         QPushButton ok_button(tr("Done"));
 247         ok_button.setMaximumWidth(100);
 248         connect(&ok_button, SIGNAL(clicked()),
 249                 &dialog, SLOT(accept()));
 250
 251         QHBoxLayout layout1;
 252         QVBoxLayout layout2;
 253         layout2.addWidget(&passwordbox);
 254         layout2.addWidget(&save_password);
 255         layout1.addLayout(&layout2);
 256         layout1.addWidget(&ok_button);
 257         dialog.setLayout(&layout1);
 258
 259         if(dialog.exec()) { //dialog accepted
 260                 password = passwordbox.text();
 261
 262                 if(save_password.isChecked()) {
 263                         kDebug(5011) << "Saving password for host '" << m_host << "'";
 264
 265                         settings.setValue(QString("%1/password").arg(m_host), password);
 266                         settings.sync();
 267                 }
 268
 269                 vncThread.setPassword(password);
 270         } else {
 271                 startQuitting();
 272         }
 273 }
 274
 275 void VncView::outputErrorMessage(const QString &message)
 276 {
 277     kDebug(5011) << message;
 278
 279     if (message == "INTERNAL:APPLE_VNC_COMPATIBILTY") {
 280         setCursor(localDotCursor());
 281         m_forceLocalCursor = true;
 282         return;
 283     }
 284
 285     startQuitting();
 286
 287     emit errorMessage(i18n("VNC failure"), message);
 288 }
 289
 290 void VncView::updateImage(int x, int y, int w, int h)
 291 {
 292         if(!QApplication::focusWidget()) { //no focus, we're probably minimized
 293                 return;
 294         }
 295      //kDebug(5011) << "got update" << width() << height();
 296
 297      /*
 298      static unsigned int frames = 0;
 299      static unsigned int updates = 0;
 300      static QTime time = QTime::currentTime();
 301      updates++;
 302      if(updates % 100 == 0)
 303              kDebug(5011) << "u/s: " << updates/double(time.elapsed()) * 1000.0;
 304 if(x == 0 and y == 0) {
 305         frames++;
 306      if(frames % 100 == 0)
 307              kDebug(5011) << "f/s: " << frames/double(time.elapsed()) * 1000.0;
 308 }
 309 */
 310
 311     m_x = x;
 312     m_y = y;
 313     m_w = w;
 314     m_h = h;
 315
 316
 317         //with scaled view, artefacts occur because of rounding errors
 318         //we'll try to only update chunks of screen space that correspond to integer pixel sizes in m_frame
 319         /*
 320         int frame_x = x/m_horizontalFactor;
 321         int frame_w = w/m_horizontalFactor;
 322         int frame_y = y/m_verticalFactor;
 323         int frame_h = h/m_verticalFactor;
 324
 325         m_x = frame_x*m_horizontalFactor;
 326         m_y = frame_y*m_verticalFactor;
 327
 328         m_w = (frame_w+2)*m_horizontalFactor;
 329         m_h = (frame_h+2)*m_verticalFactor;
 330         kDebug(5011)<< "update);
 331         */
 332
 333
 334     if (m_horizontalFactor != 1.0 || m_verticalFactor != 1.0) {
 335         // If the view is scaled, grow the update rectangle to avoid artifacts
 336         int x_extrapixels = 1.0/m_horizontalFactor + 1;
 337         int y_extrapixels = 1.0/m_verticalFactor + 1;
 338
 339         m_x-=x_extrapixels;
 340         m_y-=y_extrapixels;
 341         m_w+=2*x_extrapixels;
 342         m_h+=2*y_extrapixels;
 343     }
 344
 345     m_frame = vncThread.image();
 346
 347     if (!m_initDone) {
 348         setAttribute(Qt::WA_StaticContents);
 349         setAttribute(Qt::WA_OpaquePaintEvent);
 350         installEventFilter(this);
 351
 352         setCursor(((m_dotCursorState == CursorOn) || m_forceLocalCursor) ? localDotCursor() : Qt::BlankCursor);
 353
 354         setMouseTracking(true); // get mouse events even when there is no mousebutton pressed
 355         setFocusPolicy(Qt::WheelFocus);
 356         setStatus(Connected);
 357 //         emit framebufferSizeChanged(m_frame.width(), m_frame.height());
 358         emit connected();
 359
 360         if (m_scale) {
 361             if (parentWidget())
 362                 scaleResize(parentWidget()->width(), parentWidget()->height());
 363             else
 364                 scaleResize(width(), height());
 365         }
 366
 367         m_initDone = true;
 368
 369     }
 370
 371         static QSize old_frame_size = QSize();
 372     if ((y == 0 && x == 0) && (m_frame.size() != old_frame_size)) {
 373             old_frame_size = m_frame.size();
 374         kDebug(5011) << "Updating framebuffer size";
 375         if (m_scale) {
 376             //setMaximumSize(QSize(QWIDGETSIZE_MAX, QWIDGETSIZE_MAX));
 377             if (parentWidget())
 378                 scaleResize(parentWidget()->width(), parentWidget()->height());
 379         } else {
 380             kDebug(5011) << "Resizing: " << m_frame.width() << m_frame.height();
 381             resize(m_frame.width(), m_frame.height());
 382             //setMaximumSize(m_frame.width(), m_frame.height()); //This is a hack to force Qt to center the view in the scroll area
 383             //setMinimumSize(m_frame.width(), m_frame.height());
 384         }
 385         emit framebufferSizeChanged(m_frame.width(), m_frame.height());
 386     }
 387
 388     m_repaint = true;
 389     repaint(qRound(m_x * m_horizontalFactor), qRound(m_y * m_verticalFactor), qRound(m_w * m_horizontalFactor), qRound(m_h * m_verticalFactor));
 390     m_repaint = false;
 391 }
 392
 393 void VncView::setViewOnly(bool viewOnly)
 394 {
 395     RemoteView::setViewOnly(viewOnly);
 396
 397     m_dontSendClipboard = viewOnly;
 398
 399     if (viewOnly)
 400         setCursor(Qt::ArrowCursor);
 401     else
 402         setCursor(m_dotCursorState == CursorOn ? localDotCursor() : Qt::BlankCursor);
 403 }
 404
 405 void VncView::showDotCursor(DotCursorState state)
 406 {
 407     RemoteView::showDotCursor(state);
 408
 409     setCursor(state == CursorOn ? localDotCursor() : Qt::BlankCursor);
 410 }
 411
 412 void VncView::enableScaling(bool scale)
 413 {
 414     RemoteView::enableScaling(scale);
 415
 416     if (scale) {
 417         //setMaximumSize(QSize(QWIDGETSIZE_MAX, QWIDGETSIZE_MAX));
 418         //setMinimumSize(1, 1);
 419         if (parentWidget())
 420             scaleResize(parentWidget()->width(), parentWidget()->height());
 421             else
 422                         scaleResize(width(), height());
 423     } else {
 424         m_verticalFactor = 1.0;
 425         m_horizontalFactor = 1.0;
 426
 427         //setMaximumSize(m_frame.width(), m_frame.height()); //This is a hack to force Qt to center the view in the scroll area
 428         //setMinimumSize(m_frame.width(), m_frame.height());
 429         resize(m_frame.width(), m_frame.height());
 430     }
 431 }
 432
 433 //level should be in [0, 100]
 434 void VncView::setZoomLevel(int level)
 435 {
 436         Q_ASSERT(parentWidget() != 0);
 437
 438
 439         double factor; //actual magnification
 440         if(level > 95) {
 441                 factor = 2.0;
 442         } else if(level > 90) {
 443                 factor = 1.0;
 444         } else {
 445                 const double min_horiz_factor = double(parentWidget()->width())/m_frame.width();
 446                 const double min_vert_factor = double(parentWidget()->height())/m_frame.height();
 447                 const double fit_screen_factor = qMin(min_horiz_factor, min_vert_factor);
 448
 449                 //level=900 => factor=1.0, level=0 => factor=fit_screen_factor
 450                 factor = (level)/90.0*(1.0 - fit_screen_factor) + fit_screen_factor;
 451         }
 452
 453         if(factor < 0) {
 454                 //remote display smaller than local?
 455                 kDebug(5011) << "remote display smaller than local?";
 456                 factor = 1.0;
 457         }
 458
 459         m_verticalFactor = m_horizontalFactor = factor;
 460         resize(m_frame.width()*factor, m_frame.height()*factor);
 461 }
 462
 463 void VncView::setCut(const QString &text)
 464 {
 465     m_dontSendClipboard = true;
 466     m_clipboard->setText(text, QClipboard::Clipboard);
 467     m_clipboard->setText(text, QClipboard::Selection);
 468     m_dontSendClipboard = false;
 469 }
 470
 471 void VncView::paintEvent(QPaintEvent *event)
 472 {
 473      //kDebug(5011) << "paint event: x: " << m_x << ", y: " << m_y << ", w: " << m_w << ", h: " << m_h;
 474     if (m_frame.isNull() || m_frame.format() == QImage::Format_Invalid) {
 475         kDebug(5011) << "no valid image to paint";
 476         RemoteView::paintEvent(event);
 477         return;
 478     }
 479
 480     event->accept();
 481
 482     QPainter painter(this);
 483
 484         Qt::TransformationMode transformation_mode = Qt::SmoothTransformation;
 485         if( m_horizontalFactor >= 1.0 )
 486                 transformation_mode = Qt::FastTransformation;
 487
 488     if (m_repaint and !force_full_repaint) {
 489 //         kDebug(5011) << "normal repaint";
 490         painter.drawImage(QRect(qRound(m_x*m_horizontalFactor), qRound(m_y*m_verticalFactor),
 491                                 qRound(m_w*m_horizontalFactor), qRound(m_h*m_verticalFactor)),
 492                           m_frame.copy(m_x, m_y, m_w, m_h).scaled(qRound(m_w*m_horizontalFactor),
 493                                                                   qRound(m_h*m_verticalFactor),
 494                                                                   Qt::IgnoreAspectRatio, transformation_mode));
 495     } else {
 496          //kDebug(5011) << "resize repaint";
 497         QRect rect = event->rect();
 498         if (!force_full_repaint and (rect.width() != width() || rect.height() != height())) {
 499           //   kDebug(5011) << "Partial repaint";
 500             const int sx = rect.x()/m_horizontalFactor;
 501             const int sy = rect.y()/m_verticalFactor;
 502             const int sw = rect.width()/m_horizontalFactor;
 503             const int sh = rect.height()/m_verticalFactor;
 504             painter.drawImage(rect,
 505                               m_frame.copy(sx, sy, sw, sh).scaled(rect.width(), rect.height(),
 506                                                                   Qt::IgnoreAspectRatio, transformation_mode));
 507         } else {
 508              kDebug(5011) << "Full repaint" << width() << height() << m_frame.width() << m_frame.height();
 509             painter.drawImage(QRect(0, 0, width(), height()),
 510                               m_frame.scaled(m_frame.width() * m_horizontalFactor, m_frame.height() * m_verticalFactor,
 511                                              Qt::IgnoreAspectRatio, transformation_mode));
 512                         force_full_repaint = false;
 513         }
 514     }
 515
 516         //draw local cursor ourselves, normal mouse pointer doesn't deal with scrolling
 517         if((m_dotCursorState == CursorOn) || m_forceLocalCursor) {
 518 #if QT_VERSION >= 0x040500
 519                 painter.setCompositionMode(QPainter::RasterOp_SourceXorDestination);
 520 #endif
 521                 //rectangle size includes 1px pen width
 522                 painter.drawRect(cursor_x*m_horizontalFactor - cursor_size/2, cursor_y*m_verticalFactor - cursor_size/2, cursor_size-1, cursor_size-1);
 523         }
 524
 525     RemoteView::paintEvent(event);
 526 }
 527
 528 void VncView::resizeEvent(QResizeEvent *event)
 529 {
 530     RemoteView::resizeEvent(event);
 531         /*
 532     scaleResize(event->size().width(), event->size().height());
 533     forceFullRepaint();
 534         */
 535 }
 536
 537 bool VncView::event(QEvent *event)
 538 {
 539     switch (event->type()) {
 540     case QEvent::KeyPress:
 541     case QEvent::KeyRelease:
 542 //         kDebug(5011) << "keyEvent";
 543         keyEventHandler(static_cast<QKeyEvent*>(event));
 544         return true;
 545         break;
 546     case QEvent::MouseButtonDblClick:
 547     case QEvent::MouseButtonPress:
 548     case QEvent::MouseButtonRelease:
 549     case QEvent::MouseMove:
 550 //         kDebug(5011) << "mouseEvent";
 551         mouseEventHandler(static_cast<QMouseEvent*>(event));
 552         return true;
 553         break;
 554     case QEvent::Wheel:
 555 //         kDebug(5011) << "wheelEvent";
 556         wheelEventHandler(static_cast<QWheelEvent*>(event));
 557         return true;
 558         break;
 559     case QEvent::WindowActivate: //input panel may have been closed, prevent IM from interfering with hardware keyboard
 560         setAttribute(Qt::WA_InputMethodEnabled, false);
 561         //fall through
 562     default:
 563         return RemoteView::event(event);
 564     }
 565 }
 566
 567 //call with e == 0 to flush held events
 568 void VncView::mouseEventHandler(QMouseEvent *e)
 569 {
 570         static bool tap_detected = false;
 571         static bool double_tap_detected = false;
 572         static bool tap_drag_detected = false;
 573         static QTime press_time;
 574         static QTime up_time; //used for double clicks/tap&drag, for time after first tap
 575
 576         const int TAP_PRESS_TIME = 180;
 577         const int DOUBLE_TAP_UP_TIME = 500;
 578
 579         if(!e) { //flush held taps
 580                 if(tap_detected) {
 581                         m_buttonMask |= 0x01;
 582                         vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 583                         m_buttonMask &= 0xfe;
 584                         vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 585                         tap_detected = false;
 586                 } else if(double_tap_detected and press_time.elapsed() > TAP_PRESS_TIME) { //got tap + another press -> tap & drag
 587                         m_buttonMask |= 0x01;
 588                         vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 589                         double_tap_detected = false;
 590                         tap_drag_detected = true;
 591                 }
 592
 593                 return;
 594         }
 595
 596         if(e->x() < 0 or e->y() < 0) { //QScrollArea tends to send invalid events sometimes...
 597                 e->ignore();
 598                 return;
 599         }
 600
 601         cursor_x = qRound(e->x()/m_horizontalFactor);
 602         cursor_y = qRound(e->y()/m_verticalFactor);
 603         vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask); // plain move event
 604
 605         if(!disable_tapping and e->button() == Qt::LeftButton) { //implement touchpad-like input for left button
 606                 if(e->type() == QEvent::MouseButtonPress or e->type() == QEvent::MouseButtonDblClick) {
 607                         press_time.start();
 608                         if(tap_detected and up_time.elapsed() < DOUBLE_TAP_UP_TIME) {
 609                                 tap_detected = false;
 610                                 double_tap_detected = true;
 611
 612                                 QTimer::singleShot(TAP_PRESS_TIME, this, SLOT(mouseEventHandler()));
 613                         }
 614                 } else if(e->type() == QEvent::MouseButtonRelease) {
 615                         if(tap_drag_detected) {
 616                                 m_buttonMask &= 0xfe;
 617                                 vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 618                                 tap_drag_detected = false;
 619                         } else if(double_tap_detected) { //double click
 620                                 double_tap_detected = false;
 621
 622                                 m_buttonMask |= 0x01;
 623                                 vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 624                                 m_buttonMask &= 0xfe;
 625                                 vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 626                                 m_buttonMask |= 0x01;
 627                                 vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 628                                 m_buttonMask &= 0xfe;
 629                                 vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 630                         } else if(press_time.elapsed() < TAP_PRESS_TIME) { //tap
 631                                 up_time.start();
 632                                 tap_detected = true;
 633                                 QTimer::singleShot(DOUBLE_TAP_UP_TIME, this, SLOT(mouseEventHandler()));
 634                         }
 635
 636                 }
 637         } else { //middle or right button, send directly
 638                 if ((e->type() == QEvent::MouseButtonPress)) {
 639                     if (e->button() & Qt::MidButton)
 640                         m_buttonMask |= 0x02;
 641                     if (e->button() & Qt::RightButton)
 642                         m_buttonMask |= 0x04;
 643                 } else if (e->type() == QEvent::MouseButtonRelease) {
 644                     if (e->button() & Qt::MidButton)
 645                         m_buttonMask &= 0xfd;
 646                     if (e->button() & Qt::RightButton)
 647                         m_buttonMask &= 0xfb;
 648                 }
 649                 vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 650         }
 651
 652         //prevent local cursor artifacts
 653         static int old_cursor_x = cursor_x;
 654         static int old_cursor_y = cursor_y;
 655         if(((m_dotCursorState == CursorOn) || m_forceLocalCursor)
 656         and (cursor_x != old_cursor_x or cursor_y != old_cursor_y)) {
 657                 //clear last position
 658                 repaint(old_cursor_x*m_horizontalFactor - cursor_size/2, old_cursor_y*m_verticalFactor - cursor_size/2, cursor_size, cursor_size);
 659                 //and refresh new one
 660                 repaint(cursor_x*m_horizontalFactor - cursor_size/2, cursor_y*m_verticalFactor - cursor_size/2, cursor_size, cursor_size);
 661
 662                 old_cursor_x = cursor_x; old_cursor_y = cursor_y;
 663         }
 664 }
 665
 666 void VncView::wheelEventHandler(QWheelEvent *event)
 667 {
 668     int eb = 0;
 669     if (event->delta() < 0)
 670         eb |= 0x10;
 671     else
 672         eb |= 0x8;
 673
 674     const int x = qRound(event->x() / m_horizontalFactor);
 675     const int y = qRound(event->y() / m_verticalFactor);
 676
 677     vncThread.mouseEvent(x, y, eb | m_buttonMask);
 678     vncThread.mouseEvent(x, y, m_buttonMask);
 679 }
 680
 681 void VncView::keyEventHandler(QKeyEvent *e)
 682 {
 683     // strip away autorepeating KeyRelease; see bug #206598
 684     if (e->isAutoRepeat() && (e->type() == QEvent::KeyRelease)) {
 685         return;
 686     }
 687
 688 // parts of this code are based on http://italc.sourcearchive.com/documentation/1.0.9.1/vncview_8cpp-source.html
 689     rfbKeySym k = e->nativeVirtualKey();
 690
 691     // we do not handle Key_Backtab separately as the Shift-modifier
 692     // is already enabled
 693     if (e->key() == Qt::Key_Backtab) {
 694         k = XK_Tab;
 695     }
 696
 697     const bool pressed = (e->type() == QEvent::KeyPress);
 698
 699 #ifdef Q_WS_MAEMO_5
 700     //don't send ISO_Level3_Shift (would break things like Win+0-9)
 701     //also enable IM so symbol key works
 702     if(k == 0xfe03) {
 703             setAttribute(Qt::WA_InputMethodEnabled, pressed);
 704             e->ignore();
 705             return;
 706     }
 707 #endif
 708
 709     // handle modifiers
 710     if (k == XK_Shift_L || k == XK_Control_L || k == XK_Meta_L || k == XK_Alt_L) {
 711         if (pressed) {
 712             m_mods[k] = true;
 713         } else if (m_mods.contains(k)) {
 714             m_mods.remove(k);
 715         } else {
 716             unpressModifiers();
 717         }
 718     }
 719
 720
 721         int current_zoom = -1;
 722         if(e->key() == Qt::Key_F8)
 723                 current_zoom = left_zoom;
 724         else if(e->key() == Qt::Key_F7)
 725                 current_zoom = right_zoom;
 726         else if (k) {
 727         //      kDebug(5011) << "got '" << e->text() << "'.";
 728                 vncThread.keyEvent(k, pressed);
 729         } else {
 730                 kDebug(5011) << "nativeVirtualKey() for '" << e->text() << "' failed.";
 731                 return;
 732         }
 733
 734         if(current_zoom == -1)
 735                 return;
 736
 737         //handle zoom buttons
 738         if(current_zoom == 0) { //left click
 739                 if(pressed)
 740                         m_buttonMask |= 0x01;
 741                 else
 742                         m_buttonMask &= 0xfe;
 743                 vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 744         } else if(current_zoom == 1) { //right click
 745                 if(pressed)
 746                         m_buttonMask |= 0x04;
 747                 else
 748                         m_buttonMask &= 0xfb;
 749                 vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 750         } else if(current_zoom == 2) { //middle click
 751                 if(pressed)
 752                         m_buttonMask |= 0x02;
 753                 else
 754                         m_buttonMask &= 0xfd;
 755                 vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 756         } else if(current_zoom == 3 and pressed) { //wheel up
 757                 int eb = 0x8;
 758                 vncThread.mouseEvent(cursor_x, cursor_y, eb | m_buttonMask);
 759                 vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 760         } else if(current_zoom == 4 and pressed) { //wheel down
 761                 int eb = 0x10;
 762                 vncThread.mouseEvent(cursor_x, cursor_y, eb | m_buttonMask);
 763                 vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 764         } else if(current_zoom == 5) { //page up
 765                 vncThread.keyEvent(0xff55, pressed);
 766         } else if(current_zoom == 6) { //page down
 767                 vncThread.keyEvent(0xff56, pressed);
 768         }
 769 }
 770
 771 void VncView::unpressModifiers()
 772 {
 773     const QList<unsigned int> keys = m_mods.keys();
 774     QList<unsigned int>::const_iterator it = keys.constBegin();
 775     while (it != keys.end()) {
 776         vncThread.keyEvent(*it, false);
 777         it++;
 778     }
 779     m_mods.clear();
 780 }
 781
 782 void VncView::clipboardSelectionChanged()
 783 {
 784     if (m_status != Connected)
 785         return;
 786
 787     if (m_clipboard->ownsSelection() || m_dontSendClipboard)
 788         return;
 789
 790     const QString text = m_clipboard->text(QClipboard::Selection);
 791
 792     vncThread.clientCut(text);
 793 }
 794
 795 void VncView::clipboardDataChanged()
 796 {
 797     if (m_status != Connected)
 798         return;
 799
 800     if (m_clipboard->ownsClipboard() || m_dontSendClipboard)
 801         return;
 802
 803     const QString text = m_clipboard->text(QClipboard::Clipboard);
 804
 805     vncThread.clientCut(text);
 806 }
 807
 808 //fake key events
 809 void VncView::sendKey(Qt::Key key)
 810 {
 811         //convert Qt::Key into x11 keysym
 812         int k = 0;
 813         switch(key) {
 814         case Qt::Key_Escape:
 815                 k = 0xff1b;
 816                 break;
 817         case Qt::Key_Tab:
 818                 k = 0xff09;
 819                 break;
 820         case Qt::Key_PageUp:
 821                 k = 0xff55;
 822                 break;
 823         case Qt::Key_PageDown:
 824                 k = 0xff56;
 825                 break;
 826         case Qt::Key_Return:
 827                 k = 0xff0d;
 828                 break;
 829         case Qt::Key_Insert:
 830                 k = 0xff63;
 831                 break;
 832         case Qt::Key_Delete:
 833                 k = 0xffff;
 834                 break;
 835         case Qt::Key_Home:
 836                 k = 0xff50;
 837                 break;
 838         case Qt::Key_End:
 839                 k = 0xff57;
 840                 break;
 841         case Qt::Key_Backspace:
 842                 k = 0xff08;
 843                 break;
 844         case Qt::Key_F1:
 845         case Qt::Key_F2:
 846         case Qt::Key_F3:
 847         case Qt::Key_F4:
 848         case Qt::Key_F5:
 849         case Qt::Key_F6:
 850         case Qt::Key_F7:
 851         case Qt::Key_F8:
 852         case Qt::Key_F9:
 853         case Qt::Key_F10:
 854         case Qt::Key_F11:
 855         case Qt::Key_F12:
 856                 k = 0xffbe + int(key - Qt::Key_F1);
 857                 break;
 858         case Qt::Key_Pause:
 859                 k = 0xff13;
 860                 break;
 861         case Qt::Key_Print:
 862                 k = 0xff61;
 863                 break;
 864         case Qt::Key_Menu:
 865                 k = 0xff67;
 866                 break;
 867         case Qt::Key_Meta:
 868         case Qt::MetaModifier:
 869                 k = XK_Super_L;
 870                 break;
 871         case Qt::Key_Alt:
 872         case Qt::AltModifier:
 873                 k = XK_Alt_L;
 874                 break;
 875         case Qt::Key_Control:
 876         case Qt::ControlModifier:
 877                 k = XK_Control_L;
 878                 break;
 879         default:
 880                 kDebug(5011) << "sendKey(): Unhandled Qt::Key value " << key;
 881                 return;
 882         }
 883
 884         if (k == XK_Shift_L || k == XK_Control_L || k == XK_Meta_L || k == XK_Alt_L || k == XK_Super_L) {
 885                 if (m_mods.contains(k)) { //release
 886                         m_mods.remove(k);
 887                         vncThread.keyEvent(k, false);
 888                 } else { //press
 889                         m_mods[k] = true;
 890                         vncThread.keyEvent(k, true);
 891                 }
 892         } else { //normal key
 893                 vncThread.keyEvent(k, true);
 894                 vncThread.keyEvent(k, false);
 895         }
 896 }
 897
 898 void VncView::sendKeySequence(QKeySequence keys)
 899 {
 900         Q_ASSERT(keys.count() <= 1); //we can only handle a single combination
 901
 902         //to get at individual key presses, we split 'keys' into its components
 903         QList<int> key_list;
 904         for(int i = 0; ; i++) {
 905                 QString k = keys.toString().section('+', i, i);
 906                 if(k.isEmpty())
 907                         break;
 908                 //kDebug(5011) << "found key: " << k;
 909                 if(k == "Alt") {
 910                         key_list.append(Qt::Key_Alt);
 911                 } else if(k == "Ctrl") {
 912                         key_list.append(Qt::Key_Control);
 913                 } else if(k == "Meta") {
 914                         key_list.append(Qt::Key_Meta);
 915                 } else {
 916                         key_list.append(QKeySequence(k)[0]);
 917                 }
 918         }
 919
 920         for(int i = 0; i < key_list.count(); i++)
 921                 sendKey(Qt::Key(key_list.at(i)));
 922
 923         //release modifiers (everything before final key)
 924         for(int i = key_list.count()-2; i >= 0; i--)
 925                 sendKey(Qt::Key(key_list.at(i)));
 926 }
 927
 928 void VncView::reloadSettings()
 929 {
 930         QSettings settings;
 931         left_zoom = settings.value("left_zoom", 0).toInt();
 932         right_zoom = settings.value("right_zoom", 1).toInt();
 933         disable_tapping = settings.value("disable_tapping", false).toBool();
 934
 935         bool always_show_local_cursor = settings.value("always_show_local_cursor", false).toBool();
 936         if(always_show_local_cursor)
 937                 showDotCursor(CursorOn);
 938 }
 939
 940 //convert commitString into keyevents
 941 void VncView::inputMethodEvent(QInputMethodEvent *event)
 942 {
 943         //TODO handle replacements
 944         //NOTE for the return key to work Qt needs to enable multiline input, which only works for Q(Plain)TextEdit
 945
 946         //kDebug(5011) << event->commitString() << "|" << event->preeditString() << "|" << event->replacementLength() << "|" << event->replacementStart();
 947         QString letters = event->commitString();
 948         for(int i = 0; i < letters.length(); i++) {
 949                 char k = letters.at(i).toLatin1(); //works with all 'normal' keys, not umlauts.
 950                 if(!k) {
 951                         kDebug(5011) << "unhandled key";
 952                         continue;
 953                 }
 954                 vncThread.keyEvent(k, true);
 955                 vncThread.keyEvent(k, false);
 956         }
 957 }
 958
 959
 960 #include "moc_vncview.cpp"