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