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     if (m_horizontalFactor != 1.0 || m_verticalFactor != 1.0) {
 317         // If the view is scaled, grow the update rectangle to avoid artifacts
 318         int x_extrapixels = 2.0/m_horizontalFactor+1;
 319         int y_extrapixels = 2.0/m_verticalFactor+1;
 320
 321         m_x-=x_extrapixels;
 322         m_y-=y_extrapixels;
 323         m_w+=2*x_extrapixels;
 324         m_h+=2*y_extrapixels;
 325     }
 326
 327     m_frame = vncThread.image();
 328
 329     if (!m_initDone) {
 330         setAttribute(Qt::WA_StaticContents);
 331         setAttribute(Qt::WA_OpaquePaintEvent);
 332         installEventFilter(this);
 333
 334         setCursor(((m_dotCursorState == CursorOn) || m_forceLocalCursor) ? localDotCursor() : Qt::BlankCursor);
 335
 336         setMouseTracking(true); // get mouse events even when there is no mousebutton pressed
 337         setFocusPolicy(Qt::WheelFocus);
 338         setStatus(Connected);
 339 //         emit framebufferSizeChanged(m_frame.width(), m_frame.height());
 340         emit connected();
 341
 342         if (m_scale) {
 343             if (parentWidget())
 344                 scaleResize(parentWidget()->width(), parentWidget()->height());
 345             else
 346                 scaleResize(width(), height());
 347         }
 348
 349         m_initDone = true;
 350
 351     }
 352
 353         static QSize old_frame_size = QSize();
 354     if ((y == 0 && x == 0) && (m_frame.size() != old_frame_size)) {
 355             old_frame_size = m_frame.size();
 356         kDebug(5011) << "Updating framebuffer size";
 357         if (m_scale) {
 358             //setMaximumSize(QSize(QWIDGETSIZE_MAX, QWIDGETSIZE_MAX));
 359             if (parentWidget())
 360                 scaleResize(parentWidget()->width(), parentWidget()->height());
 361         } else {
 362             kDebug(5011) << "Resizing: " << m_frame.width() << m_frame.height();
 363             resize(m_frame.width(), m_frame.height());
 364             //setMaximumSize(m_frame.width(), m_frame.height()); //This is a hack to force Qt to center the view in the scroll area
 365             //setMinimumSize(m_frame.width(), m_frame.height());
 366         }
 367         emit framebufferSizeChanged(m_frame.width(), m_frame.height());
 368     }
 369
 370     m_repaint = true;
 371     repaint(qRound(m_x * m_horizontalFactor), qRound(m_y * m_verticalFactor), qRound(m_w * m_horizontalFactor), qRound(m_h * m_verticalFactor));
 372     m_repaint = false;
 373 }
 374
 375 void VncView::setViewOnly(bool viewOnly)
 376 {
 377     RemoteView::setViewOnly(viewOnly);
 378
 379     m_dontSendClipboard = viewOnly;
 380
 381     if (viewOnly)
 382         setCursor(Qt::ArrowCursor);
 383     else
 384         setCursor(m_dotCursorState == CursorOn ? localDotCursor() : Qt::BlankCursor);
 385 }
 386
 387 void VncView::showDotCursor(DotCursorState state)
 388 {
 389     RemoteView::showDotCursor(state);
 390
 391     setCursor(state == CursorOn ? localDotCursor() : Qt::BlankCursor);
 392 }
 393
 394 void VncView::enableScaling(bool scale)
 395 {
 396     RemoteView::enableScaling(scale);
 397
 398     if (scale) {
 399         //setMaximumSize(QSize(QWIDGETSIZE_MAX, QWIDGETSIZE_MAX));
 400         //setMinimumSize(1, 1);
 401         if (parentWidget())
 402             scaleResize(parentWidget()->width(), parentWidget()->height());
 403             else
 404                         scaleResize(width(), height());
 405     } else {
 406         m_verticalFactor = 1.0;
 407         m_horizontalFactor = 1.0;
 408
 409         //setMaximumSize(m_frame.width(), m_frame.height()); //This is a hack to force Qt to center the view in the scroll area
 410         //setMinimumSize(m_frame.width(), m_frame.height());
 411         resize(m_frame.width(), m_frame.height());
 412     }
 413 }
 414
 415 void VncView::setZoomLevel(int level)
 416 {
 417         Q_ASSERT(parentWidget() != 0);
 418
 419         //level should be in [0, 100]
 420
 421         const double min_horiz_factor = double(parentWidget()->width())/m_frame.width();
 422         const double min_vert_factor = double(parentWidget()->height())/m_frame.height();
 423         const double fit_screen_factor = qMin(min_horiz_factor, min_vert_factor);
 424         double factor; //actual magnification
 425         if(level == 0) {
 426                 factor = 2.0;
 427         } else if(level < 10) {
 428                 factor = 1.0;
 429         } else {
 430                 //level=10 => factor=1.0, level=100 => factor=fit_screen_factor
 431                 factor = (level-10)/90.0*(fit_screen_factor - 1.0) + 1.0;
 432         }
 433
 434         if(factor < 0) {
 435                 //remote display smaller than local?
 436                 kDebug(5011) << "remote display smaller than local?";
 437                 factor = 1.0;
 438         }
 439         kDebug(5011) << "zooming to " << factor;
 440
 441         m_verticalFactor = m_horizontalFactor = factor;
 442         resize(m_frame.width()*factor, m_frame.height()*factor);
 443 }
 444
 445 void VncView::setCut(const QString &text)
 446 {
 447     m_dontSendClipboard = true;
 448     m_clipboard->setText(text, QClipboard::Clipboard);
 449     m_clipboard->setText(text, QClipboard::Selection);
 450     m_dontSendClipboard = false;
 451 }
 452
 453 void VncView::paintEvent(QPaintEvent *event)
 454 {
 455      //kDebug(5011) << "paint event: x: " << m_x << ", y: " << m_y << ", w: " << m_w << ", h: " << m_h;
 456     if (m_frame.isNull() || m_frame.format() == QImage::Format_Invalid) {
 457         kDebug(5011) << "no valid image to paint";
 458         RemoteView::paintEvent(event);
 459         return;
 460     }
 461
 462     event->accept();
 463
 464     QPainter painter(this);
 465
 466     if (m_repaint and !force_full_repaint) {
 467 //         kDebug(5011) << "normal repaint";
 468         painter.drawImage(QRect(qRound(m_x*m_horizontalFactor), qRound(m_y*m_verticalFactor),
 469                                 qRound(m_w*m_horizontalFactor), qRound(m_h*m_verticalFactor)),
 470                           m_frame.copy(m_x, m_y, m_w, m_h).scaled(qRound(m_w*m_horizontalFactor),
 471                                                                   qRound(m_h*m_verticalFactor),
 472                                                                   Qt::IgnoreAspectRatio, Qt::SmoothTransformation));
 473     } else {
 474          //kDebug(5011) << "resize repaint";
 475         QRect rect = event->rect();
 476         if (!force_full_repaint and (rect.width() != width() || rect.height() != height())) {
 477           //   kDebug(5011) << "Partial repaint";
 478             const int sx = rect.x()/m_horizontalFactor;
 479             const int sy = rect.y()/m_verticalFactor;
 480             const int sw = rect.width()/m_horizontalFactor;
 481             const int sh = rect.height()/m_verticalFactor;
 482             painter.drawImage(rect,
 483                               m_frame.copy(sx, sy, sw, sh).scaled(rect.width(), rect.height(),
 484                                                                   Qt::IgnoreAspectRatio, Qt::SmoothTransformation));
 485         } else {
 486              kDebug(5011) << "Full repaint" << width() << height() << m_frame.width() << m_frame.height();
 487             painter.drawImage(QRect(0, 0, width(), height()),
 488                               m_frame.scaled(m_frame.width() * m_horizontalFactor, m_frame.height() * m_verticalFactor,
 489                                              Qt::IgnoreAspectRatio, Qt::SmoothTransformation));
 490                         force_full_repaint = false;
 491         }
 492     }
 493
 494         //draw local cursor ourselves, normal mouse pointer doesn't deal with scrolling
 495         if((m_dotCursorState == CursorOn) || m_forceLocalCursor) {
 496 #if QT_VERSION >= 0x040500
 497                 painter.setCompositionMode(QPainter::RasterOp_SourceXorDestination);
 498 #endif
 499                 //rectangle size includes 1px pen width
 500                 painter.drawRect(cursor_x*m_horizontalFactor - cursor_size/2, cursor_y*m_verticalFactor - cursor_size/2, cursor_size-1, cursor_size-1);
 501         }
 502
 503     RemoteView::paintEvent(event);
 504 }
 505
 506 void VncView::resizeEvent(QResizeEvent *event)
 507 {
 508     RemoteView::resizeEvent(event);
 509     scaleResize(event->size().width(), event->size().height());
 510     forceFullRepaint();
 511 }
 512
 513 bool VncView::event(QEvent *event)
 514 {
 515     switch (event->type()) {
 516     case QEvent::KeyPress:
 517     case QEvent::KeyRelease:
 518 //         kDebug(5011) << "keyEvent";
 519         keyEventHandler(static_cast<QKeyEvent*>(event));
 520         return true;
 521         break;
 522     case QEvent::MouseButtonDblClick:
 523     case QEvent::MouseButtonPress:
 524     case QEvent::MouseButtonRelease:
 525     case QEvent::MouseMove:
 526 //         kDebug(5011) << "mouseEvent";
 527         mouseEventHandler(static_cast<QMouseEvent*>(event));
 528         return true;
 529         break;
 530     case QEvent::Wheel:
 531 //         kDebug(5011) << "wheelEvent";
 532         wheelEventHandler(static_cast<QWheelEvent*>(event));
 533         return true;
 534         break;
 535     case QEvent::WindowActivate: //input panel may have been closed, prevent IM from interfering with hardware keyboard
 536         setAttribute(Qt::WA_InputMethodEnabled, false);
 537         //fall through
 538     default:
 539         return RemoteView::event(event);
 540     }
 541 }
 542
 543 //call with e == 0 to flush held events
 544 void VncView::mouseEventHandler(QMouseEvent *e)
 545 {
 546         static bool tap_detected = false;
 547         static bool double_tap_detected = false;
 548         static bool tap_drag_detected = false;
 549         static QTime press_time;
 550         static QTime up_time; //used for double clicks/tap&drag, for time after first tap
 551
 552         const int TAP_PRESS_TIME = 180;
 553         const int DOUBLE_TAP_UP_TIME = 500;
 554
 555         if(!e) { //flush held taps
 556                 if(tap_detected) {
 557                         m_buttonMask |= 0x01;
 558                         vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 559                         m_buttonMask &= 0xfe;
 560                         vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 561                         tap_detected = false;
 562                 } else if(double_tap_detected and press_time.elapsed() > TAP_PRESS_TIME) { //got tap + another press -> tap & drag
 563                         m_buttonMask |= 0x01;
 564                         vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 565                         double_tap_detected = false;
 566                         tap_drag_detected = true;
 567                 }
 568
 569                 return;
 570         }
 571
 572         if(e->x() < 0 or e->y() < 0) { //QScrollArea tends to send invalid events sometimes...
 573                 e->ignore();
 574                 return;
 575         }
 576
 577         cursor_x = qRound(e->x()/m_horizontalFactor);
 578         cursor_y = qRound(e->y()/m_verticalFactor);
 579         vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask); // plain move event
 580
 581         if(!disable_tapping and e->button() == Qt::LeftButton) { //implement touchpad-like input for left button
 582                 if(e->type() == QEvent::MouseButtonPress or e->type() == QEvent::MouseButtonDblClick) {
 583                         press_time.start();
 584                         if(tap_detected and up_time.elapsed() < DOUBLE_TAP_UP_TIME) {
 585                                 tap_detected = false;
 586                                 double_tap_detected = true;
 587
 588                                 QTimer::singleShot(TAP_PRESS_TIME, this, SLOT(mouseEventHandler()));
 589                         }
 590                 } else if(e->type() == QEvent::MouseButtonRelease) {
 591                         if(tap_drag_detected) {
 592                                 m_buttonMask &= 0xfe;
 593                                 vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 594                                 tap_drag_detected = false;
 595                         } else if(double_tap_detected) { //double click
 596                                 double_tap_detected = false;
 597
 598                                 m_buttonMask |= 0x01;
 599                                 vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 600                                 m_buttonMask &= 0xfe;
 601                                 vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 602                                 m_buttonMask |= 0x01;
 603                                 vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 604                                 m_buttonMask &= 0xfe;
 605                                 vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 606                         } else if(press_time.elapsed() < TAP_PRESS_TIME) { //tap
 607                                 up_time.start();
 608                                 tap_detected = true;
 609                                 QTimer::singleShot(DOUBLE_TAP_UP_TIME, this, SLOT(mouseEventHandler()));
 610                         }
 611
 612                 }
 613         } else { //middle or right button, send directly
 614                 if ((e->type() == QEvent::MouseButtonPress)) {
 615                     if (e->button() & Qt::MidButton)
 616                         m_buttonMask |= 0x02;
 617                     if (e->button() & Qt::RightButton)
 618                         m_buttonMask |= 0x04;
 619                 } else if (e->type() == QEvent::MouseButtonRelease) {
 620                     if (e->button() & Qt::MidButton)
 621                         m_buttonMask &= 0xfd;
 622                     if (e->button() & Qt::RightButton)
 623                         m_buttonMask &= 0xfb;
 624                 }
 625                 vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 626         }
 627
 628         //prevent local cursor artifacts
 629         static int old_cursor_x = cursor_x;
 630         static int old_cursor_y = cursor_y;
 631         if(((m_dotCursorState == CursorOn) || m_forceLocalCursor)
 632         and (cursor_x != old_cursor_x or cursor_y != old_cursor_y)) {
 633                 //clear last position
 634                 repaint(old_cursor_x*m_horizontalFactor - cursor_size/2, old_cursor_y*m_verticalFactor - cursor_size/2, cursor_size, cursor_size);
 635                 //and refresh new one
 636                 repaint(cursor_x*m_horizontalFactor - cursor_size/2, cursor_y*m_verticalFactor - cursor_size/2, cursor_size, cursor_size);
 637
 638                 old_cursor_x = cursor_x; old_cursor_y = cursor_y;
 639         }
 640 }
 641
 642 void VncView::wheelEventHandler(QWheelEvent *event)
 643 {
 644     int eb = 0;
 645     if (event->delta() < 0)
 646         eb |= 0x10;
 647     else
 648         eb |= 0x8;
 649
 650     const int x = qRound(event->x() / m_horizontalFactor);
 651     const int y = qRound(event->y() / m_verticalFactor);
 652
 653     vncThread.mouseEvent(x, y, eb | m_buttonMask);
 654     vncThread.mouseEvent(x, y, m_buttonMask);
 655 }
 656
 657 void VncView::keyEventHandler(QKeyEvent *e)
 658 {
 659     // strip away autorepeating KeyRelease; see bug #206598
 660     if (e->isAutoRepeat() && (e->type() == QEvent::KeyRelease)) {
 661         return;
 662     }
 663
 664 // parts of this code are based on http://italc.sourcearchive.com/documentation/1.0.9.1/vncview_8cpp-source.html
 665     rfbKeySym k = e->nativeVirtualKey();
 666
 667     // we do not handle Key_Backtab separately as the Shift-modifier
 668     // is already enabled
 669     if (e->key() == Qt::Key_Backtab) {
 670         k = XK_Tab;
 671     }
 672
 673     const bool pressed = (e->type() == QEvent::KeyPress);
 674
 675 #ifdef Q_WS_MAEMO_5
 676     //don't send ISO_Level3_Shift (would break things like Win+0-9)
 677     //also enable IM so symbol key works
 678     if(k == 0xfe03) {
 679             setAttribute(Qt::WA_InputMethodEnabled, pressed);
 680             e->ignore();
 681             return;
 682     }
 683 #endif
 684
 685     // handle modifiers
 686     if (k == XK_Shift_L || k == XK_Control_L || k == XK_Meta_L || k == XK_Alt_L) {
 687         if (pressed) {
 688             m_mods[k] = true;
 689         } else if (m_mods.contains(k)) {
 690             m_mods.remove(k);
 691         } else {
 692             unpressModifiers();
 693         }
 694     }
 695
 696
 697         int current_zoom = -1;
 698         if(e->key() == Qt::Key_F8)
 699                 current_zoom = left_zoom;
 700         else if(e->key() == Qt::Key_F7)
 701                 current_zoom = right_zoom;
 702         else if (k) {
 703         //      kDebug(5011) << "got '" << e->text() << "'.";
 704                 vncThread.keyEvent(k, pressed);
 705         } else {
 706                 kDebug(5011) << "nativeVirtualKey() for '" << e->text() << "' failed.";
 707                 return;
 708         }
 709
 710         if(current_zoom == -1)
 711                 return;
 712
 713         //handle zoom buttons
 714         if(current_zoom == 0) { //left click
 715                 if(pressed)
 716                         m_buttonMask |= 0x01;
 717                 else
 718                         m_buttonMask &= 0xfe;
 719                 vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 720         } else if(current_zoom == 1) { //right click
 721                 if(pressed)
 722                         m_buttonMask |= 0x04;
 723                 else
 724                         m_buttonMask &= 0xfb;
 725                 vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 726         } else if(current_zoom == 2) { //middle click
 727                 if(pressed)
 728                         m_buttonMask |= 0x02;
 729                 else
 730                         m_buttonMask &= 0xfd;
 731                 vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 732         } else if(current_zoom == 3 and pressed) { //wheel up
 733                 int eb = 0x8;
 734                 vncThread.mouseEvent(cursor_x, cursor_y, eb | m_buttonMask);
 735                 vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 736         } else if(current_zoom == 4 and pressed) { //wheel down
 737                 int eb = 0x10;
 738                 vncThread.mouseEvent(cursor_x, cursor_y, eb | m_buttonMask);
 739                 vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 740         } else if(current_zoom == 5) { //page up
 741                 vncThread.keyEvent(0xff55, pressed);
 742         } else if(current_zoom == 6) { //page down
 743                 vncThread.keyEvent(0xff56, pressed);
 744         }
 745 }
 746
 747 void VncView::unpressModifiers()
 748 {
 749     const QList<unsigned int> keys = m_mods.keys();
 750     QList<unsigned int>::const_iterator it = keys.constBegin();
 751     while (it != keys.end()) {
 752         vncThread.keyEvent(*it, false);
 753         it++;
 754     }
 755     m_mods.clear();
 756 }
 757
 758 void VncView::clipboardSelectionChanged()
 759 {
 760     if (m_status != Connected)
 761         return;
 762
 763     if (m_clipboard->ownsSelection() || m_dontSendClipboard)
 764         return;
 765
 766     const QString text = m_clipboard->text(QClipboard::Selection);
 767
 768     vncThread.clientCut(text);
 769 }
 770
 771 void VncView::clipboardDataChanged()
 772 {
 773     if (m_status != Connected)
 774         return;
 775
 776     if (m_clipboard->ownsClipboard() || m_dontSendClipboard)
 777         return;
 778
 779     const QString text = m_clipboard->text(QClipboard::Clipboard);
 780
 781     vncThread.clientCut(text);
 782 }
 783
 784 //fake key events
 785 void VncView::sendKey(Qt::Key key)
 786 {
 787         //convert Qt::Key into x11 keysym
 788         int k = 0;
 789         switch(key) {
 790         case Qt::Key_Escape:
 791                 k = 0xff1b;
 792                 break;
 793         case Qt::Key_Tab:
 794                 k = 0xff09;
 795                 break;
 796         case Qt::Key_PageUp:
 797                 k = 0xff55;
 798                 break;
 799         case Qt::Key_PageDown:
 800                 k = 0xff56;
 801                 break;
 802         case Qt::Key_Return:
 803                 k = 0xff0d;
 804                 break;
 805         case Qt::Key_Insert:
 806                 k = 0xff63;
 807                 break;
 808         case Qt::Key_Delete:
 809                 k = 0xffff;
 810                 break;
 811         case Qt::Key_Home:
 812                 k = 0xff50;
 813                 break;
 814         case Qt::Key_End:
 815                 k = 0xff57;
 816                 break;
 817         case Qt::Key_Backspace:
 818                 k = 0xff08;
 819                 break;
 820         case Qt::Key_F1:
 821         case Qt::Key_F2:
 822         case Qt::Key_F3:
 823         case Qt::Key_F4:
 824         case Qt::Key_F5:
 825         case Qt::Key_F6:
 826         case Qt::Key_F7:
 827         case Qt::Key_F8:
 828         case Qt::Key_F9:
 829         case Qt::Key_F10:
 830         case Qt::Key_F11:
 831         case Qt::Key_F12:
 832                 k = 0xffbe + int(key - Qt::Key_F1);
 833                 break;
 834         case Qt::Key_Pause:
 835                 k = 0xff13;
 836                 break;
 837         case Qt::Key_Print:
 838                 k = 0xff61;
 839                 break;
 840         case Qt::Key_Menu:
 841                 k = 0xff67;
 842                 break;
 843         case Qt::Key_Meta:
 844         case Qt::MetaModifier:
 845                 k = XK_Super_L;
 846                 break;
 847         case Qt::Key_Alt:
 848         case Qt::AltModifier:
 849                 k = XK_Alt_L;
 850                 break;
 851         case Qt::Key_Control:
 852         case Qt::ControlModifier:
 853                 k = XK_Control_L;
 854                 break;
 855         default:
 856                 kDebug(5011) << "sendKey(): Unhandled Qt::Key value " << key;
 857                 return;
 858         }
 859
 860         if (k == XK_Shift_L || k == XK_Control_L || k == XK_Meta_L || k == XK_Alt_L || k == XK_Super_L) {
 861                 if (m_mods.contains(k)) { //release
 862                         m_mods.remove(k);
 863                         vncThread.keyEvent(k, false);
 864                 } else { //press
 865                         m_mods[k] = true;
 866                         vncThread.keyEvent(k, true);
 867                 }
 868         } else { //normal key
 869                 vncThread.keyEvent(k, true);
 870                 vncThread.keyEvent(k, false);
 871         }
 872 }
 873
 874 void VncView::sendKeySequence(QKeySequence keys)
 875 {
 876         Q_ASSERT(keys.count() <= 1); //we can only handle a single combination
 877
 878         //to get at individual key presses, we split 'keys' into its components
 879         QList<int> key_list;
 880         for(int i = 0; ; i++) {
 881                 QString k = keys.toString().section('+', i, i);
 882                 if(k.isEmpty())
 883                         break;
 884                 //kDebug(5011) << "found key: " << k;
 885                 if(k == "Alt") {
 886                         key_list.append(Qt::Key_Alt);
 887                 } else if(k == "Ctrl") {
 888                         key_list.append(Qt::Key_Control);
 889                 } else if(k == "Meta") {
 890                         key_list.append(Qt::Key_Meta);
 891                 } else {
 892                         key_list.append(QKeySequence(k)[0]);
 893                 }
 894         }
 895
 896         for(int i = 0; i < key_list.count(); i++)
 897                 sendKey(Qt::Key(key_list.at(i)));
 898
 899         //release modifiers (everything before final key)
 900         for(int i = key_list.count()-2; i >= 0; i--)
 901                 sendKey(Qt::Key(key_list.at(i)));
 902 }
 903
 904 void VncView::reloadSettings()
 905 {
 906         QSettings settings;
 907         left_zoom = settings.value("left_zoom", 0).toInt();
 908         right_zoom = settings.value("right_zoom", 1).toInt();
 909         disable_tapping = settings.value("disable_tapping", false).toBool();
 910
 911         bool always_show_local_cursor = settings.value("always_show_local_cursor", false).toBool();
 912         if(always_show_local_cursor)
 913                 showDotCursor(CursorOn);
 914 }
 915
 916 //convert commitString into keyevents
 917 void VncView::inputMethodEvent(QInputMethodEvent *event)
 918 {
 919         //TODO handle replacements
 920         //NOTE for the return key to work Qt needs to enable multiline input, which only works for Q(Plain)TextEdit
 921
 922         //kDebug(5011) << event->commitString() << "|" << event->preeditString() << "|" << event->replacementLength() << "|" << event->replacementStart();
 923         QString letters = event->commitString();
 924         for(int i = 0; i < letters.length(); i++) {
 925                 char k = letters.at(i).toLatin1(); //works with all 'normal' keys, not umlauts.
 926                 if(!k) {
 927                         kDebug(5011) << "unhandled key";
 928                         continue;
 929                 }
 930                 vncThread.keyEvent(k, true);
 931                 vncThread.keyEvent(k, false);
 932         }
 933 }
 934
 935
 936 #include "moc_vncview.cpp"