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