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         //put this into paintEvent
 320         /*
 321         int frame_x = x/m_horizontalFactor;
 322         int frame_w = w/m_horizontalFactor;
 323         int frame_y = y/m_verticalFactor;
 324         int frame_h = h/m_verticalFactor;
 325
 326         m_x = frame_x*m_horizontalFactor;
 327         m_y = frame_y*m_verticalFactor;
 328
 329         m_w = (frame_w+2)*m_horizontalFactor;
 330         m_h = (frame_h+2)*m_verticalFactor;
 331         kDebug(5011)<< "update);
 332         */
 333
 334
 335     if (m_horizontalFactor != 1.0 || m_verticalFactor != 1.0) {
 336         // If the view is scaled, grow the update rectangle to avoid artifacts
 337         int x_extrapixels = 1.0/m_horizontalFactor + 1;
 338         int y_extrapixels = 1.0/m_verticalFactor + 1;
 339
 340         m_x-=x_extrapixels;
 341         m_y-=y_extrapixels;
 342         m_w+=2*x_extrapixels;
 343         m_h+=2*y_extrapixels;
 344     }
 345
 346     m_frame = vncThread.image();
 347
 348     if (!m_initDone) {
 349         setAttribute(Qt::WA_StaticContents);
 350         setAttribute(Qt::WA_OpaquePaintEvent);
 351         installEventFilter(this);
 352
 353         setCursor(((m_dotCursorState == CursorOn) || m_forceLocalCursor) ? localDotCursor() : Qt::BlankCursor);
 354
 355         setMouseTracking(true); // get mouse events even when there is no mousebutton pressed
 356         setFocusPolicy(Qt::WheelFocus);
 357         setStatus(Connected);
 358 //         emit framebufferSizeChanged(m_frame.width(), m_frame.height());
 359         emit connected();
 360
 361         if (m_scale) {
 362             if (parentWidget())
 363                 scaleResize(parentWidget()->width(), parentWidget()->height());
 364             else
 365                 scaleResize(width(), height());
 366         }
 367
 368         m_initDone = true;
 369
 370     }
 371
 372         static QSize old_frame_size = QSize();
 373     if ((y == 0 && x == 0) && (m_frame.size() != old_frame_size)) {
 374             old_frame_size = m_frame.size();
 375         kDebug(5011) << "Updating framebuffer size";
 376         if (m_scale) {
 377             //setMaximumSize(QSize(QWIDGETSIZE_MAX, QWIDGETSIZE_MAX));
 378             if (parentWidget())
 379                 scaleResize(parentWidget()->width(), parentWidget()->height());
 380         } else {
 381             kDebug(5011) << "Resizing: " << m_frame.width() << m_frame.height();
 382             resize(m_frame.width(), m_frame.height());
 383             //setMaximumSize(m_frame.width(), m_frame.height()); //This is a hack to force Qt to center the view in the scroll area
 384             //setMinimumSize(m_frame.width(), m_frame.height());
 385         }
 386         emit framebufferSizeChanged(m_frame.width(), m_frame.height());
 387     }
 388
 389     m_repaint = true;
 390     repaint(qRound(m_x * m_horizontalFactor), qRound(m_y * m_verticalFactor), qRound(m_w * m_horizontalFactor), qRound(m_h * m_verticalFactor));
 391     m_repaint = false;
 392 }
 393
 394 void VncView::setViewOnly(bool viewOnly)
 395 {
 396     RemoteView::setViewOnly(viewOnly);
 397
 398     m_dontSendClipboard = viewOnly;
 399
 400     if (viewOnly)
 401         setCursor(Qt::ArrowCursor);
 402     else
 403         setCursor(m_dotCursorState == CursorOn ? localDotCursor() : Qt::BlankCursor);
 404 }
 405
 406 void VncView::showDotCursor(DotCursorState state)
 407 {
 408     RemoteView::showDotCursor(state);
 409
 410     setCursor(state == CursorOn ? localDotCursor() : Qt::BlankCursor);
 411 }
 412
 413 void VncView::enableScaling(bool scale)
 414 {
 415     RemoteView::enableScaling(scale);
 416 }
 417
 418 //level should be in [0, 100]
 419 void VncView::setZoomLevel(int level)
 420 {
 421         Q_ASSERT(parentWidget() != 0);
 422
 423
 424         double factor; //actual magnification
 425         if(level > 95) {
 426                 factor = 2.0;
 427         } else if(level > 90) {
 428                 factor = 1.0;
 429         } else {
 430                 const double min_horiz_factor = double(parentWidget()->width())/m_frame.width();
 431                 const double min_vert_factor = double(parentWidget()->height())/m_frame.height();
 432                 const double fit_screen_factor = qMin(min_horiz_factor, min_vert_factor);
 433
 434                 //level=900 => factor=1.0, level=0 => factor=fit_screen_factor
 435                 factor = (level)/90.0*(1.0 - fit_screen_factor) + fit_screen_factor;
 436         }
 437
 438         if(factor < 0) {
 439                 //remote display smaller than local?
 440                 kDebug(5011) << "remote display smaller than local?";
 441                 factor = 1.0;
 442         }
 443
 444         m_verticalFactor = m_horizontalFactor = factor;
 445         resize(m_frame.width()*factor, m_frame.height()*factor);
 446 }
 447
 448 void VncView::setCut(const QString &text)
 449 {
 450     m_dontSendClipboard = true;
 451     m_clipboard->setText(text, QClipboard::Clipboard);
 452     m_clipboard->setText(text, QClipboard::Selection);
 453     m_dontSendClipboard = false;
 454 }
 455
 456 void VncView::paintEvent(QPaintEvent *event)
 457 {
 458      //kDebug(5011) << "paint event: x: " << m_x << ", y: " << m_y << ", w: " << m_w << ", h: " << m_h;
 459     if (m_frame.isNull() || m_frame.format() == QImage::Format_Invalid) {
 460         kDebug(5011) << "no valid image to paint";
 461         RemoteView::paintEvent(event);
 462         return;
 463     }
 464
 465     event->accept();
 466
 467     QPainter painter(this);
 468
 469         Qt::TransformationMode transformation_mode = Qt::SmoothTransformation;
 470         if( m_horizontalFactor >= 1.0 )
 471                 transformation_mode = Qt::FastTransformation;
 472
 473     if (m_repaint and !force_full_repaint) {
 474 //         kDebug(5011) << "normal repaint";
 475         painter.drawImage(QRect(qRound(m_x*m_horizontalFactor), qRound(m_y*m_verticalFactor),
 476                                 qRound(m_w*m_horizontalFactor), qRound(m_h*m_verticalFactor)),
 477                           m_frame.copy(m_x, m_y, m_w, m_h).scaled(qRound(m_w*m_horizontalFactor),
 478                                                                   qRound(m_h*m_verticalFactor),
 479                                                                   Qt::IgnoreAspectRatio, transformation_mode));
 480     } else {
 481          //kDebug(5011) << "resize repaint";
 482         QRect rect = event->rect();
 483         if (!force_full_repaint and (rect.width() != width() || rect.height() != height())) {
 484           //   kDebug(5011) << "Partial repaint";
 485             const int sx = rect.x()/m_horizontalFactor;
 486             const int sy = rect.y()/m_verticalFactor;
 487             const int sw = rect.width()/m_horizontalFactor;
 488             const int sh = rect.height()/m_verticalFactor;
 489             painter.drawImage(rect,
 490                               m_frame.copy(sx, sy, sw, sh).scaled(rect.width(), rect.height(),
 491                                                                   Qt::IgnoreAspectRatio, transformation_mode));
 492         } else {
 493              kDebug(5011) << "Full repaint" << width() << height() << m_frame.width() << m_frame.height();
 494             painter.drawImage(QRect(0, 0, width(), height()),
 495                               m_frame.scaled(m_frame.width() * m_horizontalFactor, m_frame.height() * m_verticalFactor,
 496                                              Qt::IgnoreAspectRatio, transformation_mode));
 497                         force_full_repaint = false;
 498         }
 499     }
 500
 501         //draw local cursor ourselves, normal mouse pointer doesn't deal with scrolling
 502         if((m_dotCursorState == CursorOn) || m_forceLocalCursor) {
 503 #if QT_VERSION >= 0x040500
 504                 painter.setCompositionMode(QPainter::RasterOp_SourceXorDestination);
 505 #endif
 506                 //rectangle size includes 1px pen width
 507                 painter.drawRect(cursor_x*m_horizontalFactor - cursor_size/2, cursor_y*m_verticalFactor - cursor_size/2, cursor_size-1, cursor_size-1);
 508         }
 509
 510     RemoteView::paintEvent(event);
 511 }
 512
 513 void VncView::resizeEvent(QResizeEvent *event)
 514 {
 515     RemoteView::resizeEvent(event);
 516         /*
 517     scaleResize(event->size().width(), event->size().height());
 518     forceFullRepaint();
 519         */
 520 }
 521
 522 bool VncView::event(QEvent *event)
 523 {
 524     switch (event->type()) {
 525     case QEvent::KeyPress:
 526     case QEvent::KeyRelease:
 527 //         kDebug(5011) << "keyEvent";
 528         keyEventHandler(static_cast<QKeyEvent*>(event));
 529         return true;
 530         break;
 531     case QEvent::MouseButtonDblClick:
 532     case QEvent::MouseButtonPress:
 533     case QEvent::MouseButtonRelease:
 534     case QEvent::MouseMove:
 535 //         kDebug(5011) << "mouseEvent";
 536         mouseEventHandler(static_cast<QMouseEvent*>(event));
 537         return true;
 538         break;
 539     case QEvent::Wheel:
 540 //         kDebug(5011) << "wheelEvent";
 541         wheelEventHandler(static_cast<QWheelEvent*>(event));
 542         return true;
 543         break;
 544     case QEvent::WindowActivate: //input panel may have been closed, prevent IM from interfering with hardware keyboard
 545         setAttribute(Qt::WA_InputMethodEnabled, false);
 546         //fall through
 547     default:
 548         return RemoteView::event(event);
 549     }
 550 }
 551
 552 //call with e == 0 to flush held events
 553 void VncView::mouseEventHandler(QMouseEvent *e)
 554 {
 555         static bool tap_detected = false;
 556         static bool double_tap_detected = false;
 557         static bool tap_drag_detected = false;
 558         static QTime press_time;
 559         static QTime up_time; //used for double clicks/tap&drag, for time after first tap
 560
 561         const int TAP_PRESS_TIME = 180;
 562         const int DOUBLE_TAP_UP_TIME = 500;
 563
 564         if(!e) { //flush held taps
 565                 if(tap_detected) {
 566                         m_buttonMask |= 0x01;
 567                         vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 568                         m_buttonMask &= 0xfe;
 569                         vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 570                         tap_detected = false;
 571                 } else if(double_tap_detected and press_time.elapsed() > TAP_PRESS_TIME) { //got tap + another press -> tap & drag
 572                         m_buttonMask |= 0x01;
 573                         vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 574                         double_tap_detected = false;
 575                         tap_drag_detected = true;
 576                 }
 577
 578                 return;
 579         }
 580
 581         if(e->x() < 0 or e->y() < 0) { //QScrollArea tends to send invalid events sometimes...
 582                 e->ignore();
 583                 return;
 584         }
 585
 586         cursor_x = qRound(e->x()/m_horizontalFactor);
 587         cursor_y = qRound(e->y()/m_verticalFactor);
 588         vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask); // plain move event
 589
 590         if(!disable_tapping and e->button() == Qt::LeftButton) { //implement touchpad-like input for left button
 591                 if(e->type() == QEvent::MouseButtonPress or e->type() == QEvent::MouseButtonDblClick) {
 592                         press_time.start();
 593                         if(tap_detected and up_time.elapsed() < DOUBLE_TAP_UP_TIME) {
 594                                 tap_detected = false;
 595                                 double_tap_detected = true;
 596
 597                                 QTimer::singleShot(TAP_PRESS_TIME, this, SLOT(mouseEventHandler()));
 598                         }
 599                 } else if(e->type() == QEvent::MouseButtonRelease) {
 600                         if(tap_drag_detected) {
 601                                 m_buttonMask &= 0xfe;
 602                                 vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 603                                 tap_drag_detected = false;
 604                         } else if(double_tap_detected) { //double click
 605                                 double_tap_detected = false;
 606
 607                                 m_buttonMask |= 0x01;
 608                                 vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 609                                 m_buttonMask &= 0xfe;
 610                                 vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 611                                 m_buttonMask |= 0x01;
 612                                 vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 613                                 m_buttonMask &= 0xfe;
 614                                 vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 615                         } else if(press_time.elapsed() < TAP_PRESS_TIME) { //tap
 616                                 up_time.start();
 617                                 tap_detected = true;
 618                                 QTimer::singleShot(DOUBLE_TAP_UP_TIME, this, SLOT(mouseEventHandler()));
 619                         }
 620
 621                 }
 622         } else { //middle or right button, send directly
 623                 if ((e->type() == QEvent::MouseButtonPress)) {
 624                     if (e->button() & Qt::MidButton)
 625                         m_buttonMask |= 0x02;
 626                     if (e->button() & Qt::RightButton)
 627                         m_buttonMask |= 0x04;
 628                 } else if (e->type() == QEvent::MouseButtonRelease) {
 629                     if (e->button() & Qt::MidButton)
 630                         m_buttonMask &= 0xfd;
 631                     if (e->button() & Qt::RightButton)
 632                         m_buttonMask &= 0xfb;
 633                 }
 634                 vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 635         }
 636
 637         //prevent local cursor artifacts
 638         static int old_cursor_x = cursor_x;
 639         static int old_cursor_y = cursor_y;
 640         if(((m_dotCursorState == CursorOn) || m_forceLocalCursor)
 641         and (cursor_x != old_cursor_x or cursor_y != old_cursor_y)) {
 642                 //clear last position
 643                 repaint(old_cursor_x*m_horizontalFactor - cursor_size/2, old_cursor_y*m_verticalFactor - cursor_size/2, cursor_size, cursor_size);
 644                 //and refresh new one
 645                 repaint(cursor_x*m_horizontalFactor - cursor_size/2, cursor_y*m_verticalFactor - cursor_size/2, cursor_size, cursor_size);
 646
 647                 old_cursor_x = cursor_x; old_cursor_y = cursor_y;
 648         }
 649 }
 650
 651 void VncView::wheelEventHandler(QWheelEvent *event)
 652 {
 653     int eb = 0;
 654     if (event->delta() < 0)
 655         eb |= 0x10;
 656     else
 657         eb |= 0x8;
 658
 659     const int x = qRound(event->x() / m_horizontalFactor);
 660     const int y = qRound(event->y() / m_verticalFactor);
 661
 662     vncThread.mouseEvent(x, y, eb | m_buttonMask);
 663     vncThread.mouseEvent(x, y, m_buttonMask);
 664 }
 665
 666 void VncView::keyEventHandler(QKeyEvent *e)
 667 {
 668     // strip away autorepeating KeyRelease; see bug #206598
 669     if (e->isAutoRepeat() && (e->type() == QEvent::KeyRelease)) {
 670         return;
 671     }
 672
 673 // parts of this code are based on http://italc.sourcearchive.com/documentation/1.0.9.1/vncview_8cpp-source.html
 674     rfbKeySym k = e->nativeVirtualKey();
 675
 676     // we do not handle Key_Backtab separately as the Shift-modifier
 677     // is already enabled
 678     if (e->key() == Qt::Key_Backtab) {
 679         k = XK_Tab;
 680     }
 681
 682     const bool pressed = (e->type() == QEvent::KeyPress);
 683
 684 #ifdef Q_WS_MAEMO_5
 685     //don't send ISO_Level3_Shift (would break things like Win+0-9)
 686     //also enable IM so symbol key works
 687     if(k == 0xfe03) {
 688             setAttribute(Qt::WA_InputMethodEnabled, pressed);
 689             e->ignore();
 690             return;
 691     }
 692 #endif
 693
 694     // handle modifiers
 695     if (k == XK_Shift_L || k == XK_Control_L || k == XK_Meta_L || k == XK_Alt_L) {
 696         if (pressed) {
 697             m_mods[k] = true;
 698         } else if (m_mods.contains(k)) {
 699             m_mods.remove(k);
 700         } else {
 701             unpressModifiers();
 702         }
 703     }
 704
 705
 706         int current_zoom = -1;
 707         if(e->key() == Qt::Key_F8)
 708                 current_zoom = left_zoom;
 709         else if(e->key() == Qt::Key_F7)
 710                 current_zoom = right_zoom;
 711         else if (k) {
 712         //      kDebug(5011) << "got '" << e->text() << "'.";
 713                 vncThread.keyEvent(k, pressed);
 714         } else {
 715                 kDebug(5011) << "nativeVirtualKey() for '" << e->text() << "' failed.";
 716                 return;
 717         }
 718
 719         if(current_zoom == -1)
 720                 return;
 721
 722         //handle zoom buttons
 723         if(current_zoom == 0) { //left click
 724                 if(pressed)
 725                         m_buttonMask |= 0x01;
 726                 else
 727                         m_buttonMask &= 0xfe;
 728                 vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 729         } else if(current_zoom == 1) { //right click
 730                 if(pressed)
 731                         m_buttonMask |= 0x04;
 732                 else
 733                         m_buttonMask &= 0xfb;
 734                 vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 735         } else if(current_zoom == 2) { //middle click
 736                 if(pressed)
 737                         m_buttonMask |= 0x02;
 738                 else
 739                         m_buttonMask &= 0xfd;
 740                 vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 741         } else if(current_zoom == 3 and pressed) { //wheel up
 742                 int eb = 0x8;
 743                 vncThread.mouseEvent(cursor_x, cursor_y, eb | m_buttonMask);
 744                 vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 745         } else if(current_zoom == 4 and pressed) { //wheel down
 746                 int eb = 0x10;
 747                 vncThread.mouseEvent(cursor_x, cursor_y, eb | m_buttonMask);
 748                 vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 749         } else if(current_zoom == 5) { //page up
 750                 vncThread.keyEvent(0xff55, pressed);
 751         } else if(current_zoom == 6) { //page down
 752                 vncThread.keyEvent(0xff56, pressed);
 753         }
 754 }
 755
 756 void VncView::unpressModifiers()
 757 {
 758     const QList<unsigned int> keys = m_mods.keys();
 759     QList<unsigned int>::const_iterator it = keys.constBegin();
 760     while (it != keys.end()) {
 761         vncThread.keyEvent(*it, false);
 762         it++;
 763     }
 764     m_mods.clear();
 765 }
 766
 767 void VncView::clipboardSelectionChanged()
 768 {
 769     if (m_status != Connected)
 770         return;
 771
 772     if (m_clipboard->ownsSelection() || m_dontSendClipboard)
 773         return;
 774
 775     const QString text = m_clipboard->text(QClipboard::Selection);
 776
 777     vncThread.clientCut(text);
 778 }
 779
 780 void VncView::clipboardDataChanged()
 781 {
 782     if (m_status != Connected)
 783         return;
 784
 785     if (m_clipboard->ownsClipboard() || m_dontSendClipboard)
 786         return;
 787
 788     const QString text = m_clipboard->text(QClipboard::Clipboard);
 789
 790     vncThread.clientCut(text);
 791 }
 792
 793 //fake key events
 794 void VncView::sendKey(Qt::Key key)
 795 {
 796         //convert Qt::Key into x11 keysym
 797         int k = 0;
 798         switch(key) {
 799         case Qt::Key_Escape:
 800                 k = 0xff1b;
 801                 break;
 802         case Qt::Key_Tab:
 803                 k = 0xff09;
 804                 break;
 805         case Qt::Key_PageUp:
 806                 k = 0xff55;
 807                 break;
 808         case Qt::Key_PageDown:
 809                 k = 0xff56;
 810                 break;
 811         case Qt::Key_Return:
 812                 k = 0xff0d;
 813                 break;
 814         case Qt::Key_Insert:
 815                 k = 0xff63;
 816                 break;
 817         case Qt::Key_Delete:
 818                 k = 0xffff;
 819                 break;
 820         case Qt::Key_Home:
 821                 k = 0xff50;
 822                 break;
 823         case Qt::Key_End:
 824                 k = 0xff57;
 825                 break;
 826         case Qt::Key_Backspace:
 827                 k = 0xff08;
 828                 break;
 829         case Qt::Key_F1:
 830         case Qt::Key_F2:
 831         case Qt::Key_F3:
 832         case Qt::Key_F4:
 833         case Qt::Key_F5:
 834         case Qt::Key_F6:
 835         case Qt::Key_F7:
 836         case Qt::Key_F8:
 837         case Qt::Key_F9:
 838         case Qt::Key_F10:
 839         case Qt::Key_F11:
 840         case Qt::Key_F12:
 841                 k = 0xffbe + int(key - Qt::Key_F1);
 842                 break;
 843         case Qt::Key_Pause:
 844                 k = 0xff13;
 845                 break;
 846         case Qt::Key_Print:
 847                 k = 0xff61;
 848                 break;
 849         case Qt::Key_Menu:
 850                 k = 0xff67;
 851                 break;
 852         case Qt::Key_Meta:
 853         case Qt::MetaModifier:
 854                 k = XK_Super_L;
 855                 break;
 856         case Qt::Key_Alt:
 857         case Qt::AltModifier:
 858                 k = XK_Alt_L;
 859                 break;
 860         case Qt::Key_Control:
 861         case Qt::ControlModifier:
 862                 k = XK_Control_L;
 863                 break;
 864         default:
 865                 kDebug(5011) << "sendKey(): Unhandled Qt::Key value " << key;
 866                 return;
 867         }
 868
 869         if (k == XK_Shift_L || k == XK_Control_L || k == XK_Meta_L || k == XK_Alt_L || k == XK_Super_L) {
 870                 if (m_mods.contains(k)) { //release
 871                         m_mods.remove(k);
 872                         vncThread.keyEvent(k, false);
 873                 } else { //press
 874                         m_mods[k] = true;
 875                         vncThread.keyEvent(k, true);
 876                 }
 877         } else { //normal key
 878                 vncThread.keyEvent(k, true);
 879                 vncThread.keyEvent(k, false);
 880         }
 881 }
 882
 883 void VncView::sendKeySequence(QKeySequence keys)
 884 {
 885         Q_ASSERT(keys.count() <= 1); //we can only handle a single combination
 886
 887         //to get at individual key presses, we split 'keys' into its components
 888         QList<int> key_list;
 889         for(int i = 0; ; i++) {
 890                 QString k = keys.toString().section('+', i, i);
 891                 if(k.isEmpty())
 892                         break;
 893                 //kDebug(5011) << "found key: " << k;
 894                 if(k == "Alt") {
 895                         key_list.append(Qt::Key_Alt);
 896                 } else if(k == "Ctrl") {
 897                         key_list.append(Qt::Key_Control);
 898                 } else if(k == "Meta") {
 899                         key_list.append(Qt::Key_Meta);
 900                 } else {
 901                         key_list.append(QKeySequence(k)[0]);
 902                 }
 903         }
 904
 905         for(int i = 0; i < key_list.count(); i++)
 906                 sendKey(Qt::Key(key_list.at(i)));
 907
 908         //release modifiers (everything before final key)
 909         for(int i = key_list.count()-2; i >= 0; i--)
 910                 sendKey(Qt::Key(key_list.at(i)));
 911 }
 912
 913 void VncView::reloadSettings()
 914 {
 915         QSettings settings;
 916         left_zoom = settings.value("left_zoom", 0).toInt();
 917         right_zoom = settings.value("right_zoom", 1).toInt();
 918         disable_tapping = settings.value("disable_tapping", false).toBool();
 919
 920         bool always_show_local_cursor = settings.value("always_show_local_cursor", false).toBool();
 921         if(always_show_local_cursor)
 922                 showDotCursor(CursorOn);
 923
 924         enableScaling(true);
 925 }
 926
 927 //convert commitString into keyevents
 928 void VncView::inputMethodEvent(QInputMethodEvent *event)
 929 {
 930         //TODO handle replacements
 931         //NOTE for the return key to work Qt needs to enable multiline input, which only works for Q(Plain)TextEdit
 932
 933         //kDebug(5011) << event->commitString() << "|" << event->preeditString() << "|" << event->replacementLength() << "|" << event->replacementStart();
 934         QString letters = event->commitString();
 935         for(int i = 0; i < letters.length(); i++) {
 936                 char k = letters.at(i).toLatin1(); //works with all 'normal' keys, not umlauts.
 937                 if(!k) {
 938                         kDebug(5011) << "unhandled key";
 939                         continue;
 940                 }
 941                 vncThread.keyEvent(k, true);
 942                 vncThread.keyEvent(k, false);
 943         }
 944 }
 945
 946
 947 #include "moc_vncview.cpp"