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 VncView::VncView(QWidget *parent, const KUrl &url, RemoteView::Quality quality)
  56         : RemoteView(parent),
  57         m_initDone(false),
  58         m_buttonMask(0),
  59         cursor_x(0),
  60         cursor_y(0),
  61         m_repaint(false),
  62         m_quitFlag(false),
  63         m_firstPasswordTry(true),
  64         m_dontSendClipboard(false),
  65         m_horizontalFactor(1.0),
  66         m_verticalFactor(1.0),
  67         m_forceLocalCursor(false),
  68         force_full_repaint(false),
  69         quality(quality)
  70 {
  71     m_url = url;
  72     m_host = url.host();
  73     m_port = url.port();
  74
  75     connect(&vncThread, SIGNAL(imageUpdated(int, int, int, int)), this, SLOT(updateImage(int, int, int, int)), Qt::BlockingQueuedConnection);
  76     connect(&vncThread, SIGNAL(gotCut(const QString&)), this, SLOT(setCut(const QString&)), Qt::BlockingQueuedConnection);
  77     connect(&vncThread, SIGNAL(passwordRequest()), this, SLOT(requestPassword()), Qt::BlockingQueuedConnection);
  78     connect(&vncThread, SIGNAL(outputErrorMessage(QString)), this, SLOT(outputErrorMessage(QString)));
  79
  80     m_clipboard = QApplication::clipboard();
  81     connect(m_clipboard, SIGNAL(selectionChanged()), this, SLOT(clipboardSelectionChanged()));
  82     connect(m_clipboard, SIGNAL(dataChanged()), this, SLOT(clipboardDataChanged()));
  83
  84     reloadSettings();
  85 }
  86
  87 VncView::~VncView()
  88 {
  89     unpressModifiers();
  90
  91     // Disconnect all signals so that we don't get any more callbacks from the client thread
  92     vncThread.disconnect();
  93
  94     startQuitting();
  95 }
  96
  97 void VncView::forceFullRepaint()
  98 {
  99         force_full_repaint = true;
 100         repaint();
 101 }
 102
 103 bool VncView::eventFilter(QObject *obj, QEvent *event)
 104 {
 105     if (m_viewOnly) {
 106         if (event->type() == QEvent::KeyPress ||
 107                 event->type() == QEvent::KeyRelease ||
 108                 event->type() == QEvent::MouseButtonDblClick ||
 109                 event->type() == QEvent::MouseButtonPress ||
 110                 event->type() == QEvent::MouseButtonRelease ||
 111                 event->type() == QEvent::Wheel ||
 112                 event->type() == QEvent::MouseMove)
 113             return true;
 114     }
 115     return RemoteView::eventFilter(obj, event);
 116 }
 117
 118 QSize VncView::framebufferSize()
 119 {
 120     return m_frame.size();
 121 }
 122
 123 QSize VncView::sizeHint() const
 124 {
 125     return size();
 126 }
 127
 128 QSize VncView::minimumSizeHint() const
 129 {
 130     return size();
 131 }
 132
 133 void VncView::scaleResize(int w, int h)
 134 {
 135     RemoteView::scaleResize(w, h);
 136
 137     kDebug(5011) << "scaleResize(): " <<w << h;
 138     if (m_scale) {
 139         m_verticalFactor = (qreal) h / m_frame.height();
 140         m_horizontalFactor = (qreal) w / m_frame.width();
 141
 142         m_verticalFactor = m_horizontalFactor = qMin(m_verticalFactor, m_horizontalFactor);
 143
 144         const qreal newW = m_frame.width() * m_horizontalFactor;
 145         const qreal newH = m_frame.height() * m_verticalFactor;
 146         /*
 147         setMaximumSize(newW, newH); //This is a hack to force Qt to center the view in the scroll area
 148         //also causes the widget's size to flicker
 149         */
 150         resize(newW, newH);
 151     }
 152 }
 153
 154
 155 void VncView::startQuitting()
 156 {
 157     kDebug(5011) << "about to quit";
 158
 159     const bool connected = status() == RemoteView::Connected;
 160
 161     setStatus(Disconnecting);
 162
 163     m_quitFlag = true;
 164
 165     if (connected) {
 166         vncThread.stop();
 167     }
 168
 169     vncThread.quit();
 170
 171     const bool quitSuccess = vncThread.wait(500);
 172
 173     kDebug(5011) << "startQuitting(): Quit VNC thread success:" << quitSuccess;
 174
 175     setStatus(Disconnected);
 176 }
 177
 178 bool VncView::isQuitting()
 179 {
 180     return m_quitFlag;
 181 }
 182
 183 bool VncView::start()
 184 {
 185     vncThread.setHost(m_host);
 186     vncThread.setPort(m_port);
 187
 188     vncThread.setQuality(quality);
 189
 190     // set local cursor on by default because low quality mostly means slow internet connection
 191     if (quality == RemoteView::Low) {
 192         showDotCursor(RemoteView::CursorOn);
 193     }
 194
 195     setStatus(Connecting);
 196
 197     vncThread.start();
 198     return true;
 199 }
 200
 201 bool VncView::supportsScaling() const
 202 {
 203     return true;
 204 }
 205
 206 bool VncView::supportsLocalCursor() const
 207 {
 208     return true;
 209 }
 210
 211 void VncView::requestPassword()
 212 {
 213     kDebug(5011) << "request password";
 214
 215     setStatus(Authenticating);
 216
 217     if (!m_url.password().isNull()) {
 218         vncThread.setPassword(m_url.password());
 219         return;
 220     }
 221
 222         QSettings settings;
 223         settings.beginGroup("hosts");
 224         QString password = settings.value(QString("%1/password").arg(m_host), "").toString();
 225         //check for saved password
 226         if(m_firstPasswordTry and !password.isEmpty()) {
 227                 kDebug(5011) << "Trying saved password";
 228                 m_firstPasswordTry = false;
 229                 vncThread.setPassword(password);
 230                 return;
 231         }
 232         m_firstPasswordTry = false;
 233
 234         //build dialog
 235         QDialog dialog(this);
 236         dialog.setWindowTitle(tr("Password required"));
 237
 238         QLineEdit passwordbox;
 239         passwordbox.setEchoMode(QLineEdit::Password);
 240         passwordbox.setText(password);
 241         QCheckBox save_password(tr("Save Password"));
 242         save_password.setChecked(!password.isEmpty()); //offer to overwrite saved password
 243         QPushButton ok_button(tr("Done"));
 244         ok_button.setMaximumWidth(100);
 245         connect(&ok_button, SIGNAL(clicked()),
 246                 &dialog, SLOT(accept()));
 247
 248         QHBoxLayout layout1;
 249         QVBoxLayout layout2;
 250         layout2.addWidget(&passwordbox);
 251         layout2.addWidget(&save_password);
 252         layout1.addLayout(&layout2);
 253         layout1.addWidget(&ok_button);
 254         dialog.setLayout(&layout1);
 255
 256         if(dialog.exec()) { //dialog accepted
 257                 password = passwordbox.text();
 258
 259                 if(save_password.isChecked()) {
 260                         kDebug(5011) << "Saving password for host '" << m_host << "'";
 261
 262                         settings.setValue(QString("%1/password").arg(m_host), password);
 263                         settings.sync();
 264                 }
 265
 266                 vncThread.setPassword(password);
 267         } else {
 268                 startQuitting();
 269         }
 270 }
 271
 272 void VncView::outputErrorMessage(const QString &message)
 273 {
 274     kDebug(5011) << message;
 275
 276     if (message == "INTERNAL:APPLE_VNC_COMPATIBILTY") {
 277         setCursor(localDotCursor());
 278         m_forceLocalCursor = true;
 279         return;
 280     }
 281
 282     startQuitting();
 283
 284     emit errorMessage(i18n("VNC failure"), message);
 285 }
 286
 287 void VncView::updateImage(int x, int y, int w, int h)
 288 {
 289         if(!QApplication::focusWidget()) { //no focus, we're probably minimized
 290                 return;
 291         }
 292      //kDebug(5011) << "got update" << width() << height();
 293      static unsigned int frames = 0;
 294      static unsigned int updates = 0;
 295      static QTime time = QTime::currentTime();
 296      updates++;
 297      if(updates % 100 == 0)
 298              kDebug(5011) << "u/s: " << updates/double(time.elapsed()) * 1000.0;
 299 if(x == 0 and y == 0) {
 300         frames++;
 301      if(frames % 100 == 0)
 302              kDebug(5011) << "f/s: " << frames/double(time.elapsed()) * 1000.0;
 303 }
 304
 305     m_x = x;
 306     m_y = y;
 307     m_w = w;
 308     m_h = h;
 309
 310     if (m_horizontalFactor != 1.0 || m_verticalFactor != 1.0) {
 311         // If the view is scaled, grow the update rectangle to avoid artifacts
 312         int x_extrapixels = 1.0/m_horizontalFactor+1;
 313         int y_extrapixels = 1.0/m_verticalFactor+1;
 314
 315         m_x-=x_extrapixels;
 316         m_y-=y_extrapixels;
 317         m_w+=2*x_extrapixels;
 318         m_h+=2*y_extrapixels;
 319     }
 320
 321     m_frame = vncThread.image();
 322
 323     if (!m_initDone) {
 324         setAttribute(Qt::WA_StaticContents);
 325         setAttribute(Qt::WA_OpaquePaintEvent);
 326         installEventFilter(this);
 327
 328         setCursor(((m_dotCursorState == CursorOn) || m_forceLocalCursor) ? localDotCursor() : Qt::BlankCursor);
 329
 330         setMouseTracking(true); // get mouse events even when there is no mousebutton pressed
 331         setFocusPolicy(Qt::WheelFocus);
 332         setStatus(Connected);
 333 //         emit framebufferSizeChanged(m_frame.width(), m_frame.height());
 334         emit connected();
 335
 336         if (m_scale) {
 337             if (parentWidget())
 338                 scaleResize(parentWidget()->width(), parentWidget()->height());
 339             else
 340                 scaleResize(width(), height());
 341         }
 342
 343         m_initDone = true;
 344
 345     }
 346
 347         static QSize old_frame_size = QSize();
 348     if ((y == 0 && x == 0) && (m_frame.size() != old_frame_size)) {
 349             old_frame_size = m_frame.size();
 350         kDebug(5011) << "Updating framebuffer size";
 351         if (m_scale) {
 352             //setMaximumSize(QSize(QWIDGETSIZE_MAX, QWIDGETSIZE_MAX));
 353             if (parentWidget())
 354                 scaleResize(parentWidget()->width(), parentWidget()->height());
 355         } else {
 356             kDebug(5011) << "Resizing: " << m_frame.width() << m_frame.height();
 357             resize(m_frame.width(), m_frame.height());
 358             //setMaximumSize(m_frame.width(), m_frame.height()); //This is a hack to force Qt to center the view in the scroll area
 359             //setMinimumSize(m_frame.width(), m_frame.height());
 360         }
 361         emit framebufferSizeChanged(m_frame.width(), m_frame.height());
 362     }
 363
 364     m_repaint = true;
 365     repaint(qRound(m_x * m_horizontalFactor), qRound(m_y * m_verticalFactor), qRound(m_w * m_horizontalFactor), qRound(m_h * m_verticalFactor));
 366     m_repaint = false;
 367 }
 368
 369 void VncView::setViewOnly(bool viewOnly)
 370 {
 371     RemoteView::setViewOnly(viewOnly);
 372
 373     m_dontSendClipboard = viewOnly;
 374
 375     if (viewOnly)
 376         setCursor(Qt::ArrowCursor);
 377     else
 378         setCursor(m_dotCursorState == CursorOn ? localDotCursor() : Qt::BlankCursor);
 379 }
 380
 381 void VncView::showDotCursor(DotCursorState state)
 382 {
 383     RemoteView::showDotCursor(state);
 384
 385     setCursor(state == CursorOn ? localDotCursor() : Qt::BlankCursor);
 386 }
 387
 388 void VncView::enableScaling(bool scale)
 389 {
 390     RemoteView::enableScaling(scale);
 391
 392     if (scale) {
 393         //setMaximumSize(QSize(QWIDGETSIZE_MAX, QWIDGETSIZE_MAX));
 394         //setMinimumSize(1, 1);
 395         if (parentWidget())
 396             scaleResize(parentWidget()->width(), parentWidget()->height());
 397             else
 398                 scaleResize(width(), height());
 399     } else {
 400         m_verticalFactor = 1.0;
 401         m_horizontalFactor = 1.0;
 402
 403         //setMaximumSize(m_frame.width(), m_frame.height()); //This is a hack to force Qt to center the view in the scroll area
 404         //setMinimumSize(m_frame.width(), m_frame.height());
 405         resize(m_frame.width(), m_frame.height());
 406     }
 407 }
 408
 409 void VncView::setCut(const QString &text)
 410 {
 411     m_dontSendClipboard = true;
 412     m_clipboard->setText(text, QClipboard::Clipboard);
 413     m_clipboard->setText(text, QClipboard::Selection);
 414     m_dontSendClipboard = false;
 415 }
 416
 417 void VncView::paintEvent(QPaintEvent *event)
 418 {
 419      //kDebug(5011) << "paint event: x: " << m_x << ", y: " << m_y << ", w: " << m_w << ", h: " << m_h;
 420     if (m_frame.isNull() || m_frame.format() == QImage::Format_Invalid) {
 421         kDebug(5011) << "no valid image to paint";
 422         RemoteView::paintEvent(event);
 423         return;
 424     }
 425
 426     event->accept();
 427
 428     QPainter painter(this);
 429
 430     if (m_repaint and !force_full_repaint) {
 431 //         kDebug(5011) << "normal repaint";
 432         painter.drawImage(QRect(qRound(m_x*m_horizontalFactor), qRound(m_y*m_verticalFactor),
 433                                 qRound(m_w*m_horizontalFactor), qRound(m_h*m_verticalFactor)),
 434                           m_frame.copy(m_x, m_y, m_w, m_h).scaled(qRound(m_w*m_horizontalFactor),
 435                                                                   qRound(m_h*m_verticalFactor),
 436                                                                   Qt::IgnoreAspectRatio, Qt::SmoothTransformation));
 437     } else {
 438          //kDebug(5011) << "resize repaint";
 439         QRect rect = event->rect();
 440         if (!force_full_repaint and (rect.width() != width() || rect.height() != height())) {
 441           //   kDebug(5011) << "Partial repaint";
 442             const int sx = rect.x()/m_horizontalFactor;
 443             const int sy = rect.y()/m_verticalFactor;
 444             const int sw = rect.width()/m_horizontalFactor;
 445             const int sh = rect.height()/m_verticalFactor;
 446             painter.drawImage(rect,
 447                               m_frame.copy(sx, sy, sw, sh).scaled(rect.width(), rect.height(),
 448                                                                   Qt::IgnoreAspectRatio, Qt::SmoothTransformation));
 449         } else {
 450              kDebug(5011) << "Full repaint" << width() << height() << m_frame.width() << m_frame.height();
 451             painter.drawImage(QRect(0, 0, width(), height()),
 452                               m_frame.scaled(m_frame.width() * m_horizontalFactor, m_frame.height() * m_verticalFactor,
 453                                              Qt::IgnoreAspectRatio, Qt::SmoothTransformation));
 454             force_full_repaint = false;
 455         }
 456     }
 457
 458         //draw local cursor ourselves, normal mouse pointer doesn't deal with scrolling
 459         if((m_dotCursorState == CursorOn) || m_forceLocalCursor) {
 460                 const uchar bits[] = { 0xff, 0x8e, 0x8e, 0x8e, 0xff };
 461                 const bool little_endian = (Q_BYTE_ORDER == Q_LITTLE_ENDIAN);
 462                 const QBitmap cursorBitmap = QBitmap::fromData(QSize(5,5), bits , little_endian?QImage::Format_Mono:QImage::Format_MonoLSB);
 463
 464 #if QT_VERSION >= 0x040500
 465                 painter.setCompositionMode(QPainter::RasterOp_SourceXorDestination);
 466 #endif
 467
 468                 painter.drawPixmap(cursor_x-2, cursor_y-2, cursorBitmap);
 469                 //TODO update position of last cursor_x/y to avoid artifacts
 470         }
 471
 472     RemoteView::paintEvent(event);
 473 }
 474
 475 void VncView::resizeEvent(QResizeEvent *event)
 476 {
 477     RemoteView::resizeEvent(event);
 478     scaleResize(event->size().width(), event->size().height());
 479     forceFullRepaint();
 480 }
 481
 482 bool VncView::event(QEvent *event)
 483 {
 484     switch (event->type()) {
 485     case QEvent::KeyPress:
 486     case QEvent::KeyRelease:
 487 //         kDebug(5011) << "keyEvent";
 488         keyEventHandler(static_cast<QKeyEvent*>(event));
 489         return true;
 490         break;
 491     case QEvent::MouseButtonDblClick:
 492     case QEvent::MouseButtonPress:
 493     case QEvent::MouseButtonRelease:
 494     case QEvent::MouseMove:
 495 //         kDebug(5011) << "mouseEvent";
 496         mouseEventHandler(static_cast<QMouseEvent*>(event));
 497         return true;
 498         break;
 499     case QEvent::Wheel:
 500 //         kDebug(5011) << "wheelEvent";
 501         wheelEventHandler(static_cast<QWheelEvent*>(event));
 502         return true;
 503         break;
 504     case QEvent::WindowActivate: //input panel may have been closed, prevent IM from interfering with hardware keyboard
 505         setAttribute(Qt::WA_InputMethodEnabled, false);
 506         //fall through
 507     default:
 508         return RemoteView::event(event);
 509     }
 510 }
 511
 512 //call with e == 0 to flush held events
 513 void VncView::mouseEventHandler(QMouseEvent *e)
 514 {
 515         static bool tap_detected = false;
 516         static bool double_tap_detected = false;
 517         static bool tap_drag_detected = false;
 518         static QTime press_time;
 519         static QTime up_time; //used for double clicks/tap&drag, for time after first tap
 520
 521         const int TAP_PRESS_TIME = 180;
 522         const int DOUBLE_TAP_UP_TIME = 500;
 523
 524         if(!e) { //flush held taps
 525                 if(tap_detected) {
 526                         m_buttonMask |= 0x01;
 527                         vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 528                         m_buttonMask &= 0xfe;
 529                         vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 530                         tap_detected = false;
 531                 } else if(double_tap_detected and press_time.elapsed() > TAP_PRESS_TIME) { //got tap + another press -> tap & drag
 532                         m_buttonMask |= 0x01;
 533                         vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 534                         double_tap_detected = false;
 535                         tap_drag_detected = true;
 536                 }
 537
 538                 return;
 539         }
 540
 541         if(e->x() < 0 or e->y() < 0) { //QScrollArea tends to send invalid events sometimes...
 542                 e->ignore();
 543                 return;
 544         }
 545
 546         cursor_x = qRound(e->x()/m_horizontalFactor);
 547         cursor_y = qRound(e->y()/m_verticalFactor);
 548         vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask); // plain move event
 549
 550         if(disable_tapping) { //only move cursor
 551                 e->ignore();
 552                 return;
 553         }
 554
 555         if(e->button() == Qt::LeftButton) { //implement touchpad-like input for left button
 556                 if(e->type() == QEvent::MouseButtonPress or e->type() == QEvent::MouseButtonDblClick) {
 557                         press_time.start();
 558                         if(tap_detected and up_time.elapsed() < DOUBLE_TAP_UP_TIME) {
 559                                 tap_detected = false;
 560                                 double_tap_detected = true;
 561
 562                                 QTimer::singleShot(TAP_PRESS_TIME, this, SLOT(mouseEventHandler()));
 563                         }
 564                 } else if(e->type() == QEvent::MouseButtonRelease) {
 565                         if(tap_drag_detected) {
 566                                 m_buttonMask &= 0xfe;
 567                                 vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 568                                 tap_drag_detected = false;
 569                         } else if(double_tap_detected) { //double click
 570                                 double_tap_detected = false;
 571
 572                                 m_buttonMask |= 0x01;
 573                                 vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 574                                 m_buttonMask &= 0xfe;
 575                                 vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 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                         } else if(press_time.elapsed() < TAP_PRESS_TIME) { //tap
 581                                 up_time.start();
 582                                 tap_detected = true;
 583                                 QTimer::singleShot(DOUBLE_TAP_UP_TIME, this, SLOT(mouseEventHandler()));
 584                         }
 585
 586                 }
 587         } else { //middle or right button, send directly
 588                 if ((e->type() == QEvent::MouseButtonPress)) {
 589                     if (e->button() & Qt::MidButton)
 590                         m_buttonMask |= 0x02;
 591                     if (e->button() & Qt::RightButton)
 592                         m_buttonMask |= 0x04;
 593                 } else if (e->type() == QEvent::MouseButtonRelease) {
 594                     if (e->button() & Qt::MidButton)
 595                         m_buttonMask &= 0xfd;
 596                     if (e->button() & Qt::RightButton)
 597                         m_buttonMask &= 0xfb;
 598                 }
 599                 vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 600         }
 601 }
 602
 603 void VncView::wheelEventHandler(QWheelEvent *event)
 604 {
 605     int eb = 0;
 606     if (event->delta() < 0)
 607         eb |= 0x10;
 608     else
 609         eb |= 0x8;
 610
 611     const int x = qRound(event->x() / m_horizontalFactor);
 612     const int y = qRound(event->y() / m_verticalFactor);
 613
 614     vncThread.mouseEvent(x, y, eb | m_buttonMask);
 615     vncThread.mouseEvent(x, y, m_buttonMask);
 616 }
 617
 618 void VncView::keyEventHandler(QKeyEvent *e)
 619 {
 620     // strip away autorepeating KeyRelease; see bug #206598
 621     if (e->isAutoRepeat() && (e->type() == QEvent::KeyRelease)) {
 622         return;
 623     }
 624
 625 // parts of this code are based on http://italc.sourcearchive.com/documentation/1.0.9.1/vncview_8cpp-source.html
 626     rfbKeySym k = e->nativeVirtualKey();
 627
 628     // we do not handle Key_Backtab separately as the Shift-modifier
 629     // is already enabled
 630     if (e->key() == Qt::Key_Backtab) {
 631         k = XK_Tab;
 632     }
 633
 634     const bool pressed = (e->type() == QEvent::KeyPress);
 635
 636 #ifdef Q_WS_MAEMO_5
 637     //don't send ISO_Level3_Shift (would break things like Win+0-9)
 638     //also enable IM so symbol key works
 639     if(k == 0xfe03) {
 640             setAttribute(Qt::WA_InputMethodEnabled, pressed);
 641             e->ignore();
 642             return;
 643     }
 644 #endif
 645
 646     // handle modifiers
 647     if (k == XK_Shift_L || k == XK_Control_L || k == XK_Meta_L || k == XK_Alt_L) {
 648         if (pressed) {
 649             m_mods[k] = true;
 650         } else if (m_mods.contains(k)) {
 651             m_mods.remove(k);
 652         } else {
 653             unpressModifiers();
 654         }
 655     }
 656
 657
 658         int current_zoom = -1;
 659         if(e->key() == Qt::Key_F8)
 660                 current_zoom = left_zoom;
 661         else if(e->key() == Qt::Key_F7)
 662                 current_zoom = right_zoom;
 663         else if (k) {
 664         //      kDebug(5011) << "got '" << e->text() << "'.";
 665                 vncThread.keyEvent(k, pressed);
 666         } else {
 667                 kDebug(5011) << "nativeVirtualKey() for '" << e->text() << "' failed.";
 668                 return;
 669         }
 670
 671         if(current_zoom == -1)
 672                 return;
 673
 674         //handle zoom buttons
 675         if(current_zoom == 0) { //left click
 676                 if(pressed)
 677                         m_buttonMask |= 0x01;
 678                 else
 679                         m_buttonMask &= 0xfe;
 680                 vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 681         } else if(current_zoom == 1) { //right click
 682                 if(pressed)
 683                         m_buttonMask |= 0x04;
 684                 else
 685                         m_buttonMask &= 0xfb;
 686                 vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 687         } else if(current_zoom == 2) { //middle click
 688                 if(pressed)
 689                         m_buttonMask |= 0x02;
 690                 else
 691                         m_buttonMask &= 0xfd;
 692                 vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 693         } else if(current_zoom == 3 and pressed) { //wheel up
 694                 int eb = 0x8;
 695                 vncThread.mouseEvent(cursor_x, cursor_y, eb | m_buttonMask);
 696                 vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 697         } else if(current_zoom == 4 and pressed) { //wheel down
 698                 int eb = 0x10;
 699                 vncThread.mouseEvent(cursor_x, cursor_y, eb | m_buttonMask);
 700                 vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 701         } else if(current_zoom == 5) { //page up
 702                 vncThread.keyEvent(0xff55, pressed);
 703         } else if(current_zoom == 6) { //page down
 704                 vncThread.keyEvent(0xff56, pressed);
 705         }
 706 }
 707
 708 void VncView::unpressModifiers()
 709 {
 710     const QList<unsigned int> keys = m_mods.keys();
 711     QList<unsigned int>::const_iterator it = keys.constBegin();
 712     while (it != keys.end()) {
 713         vncThread.keyEvent(*it, false);
 714         it++;
 715     }
 716     m_mods.clear();
 717 }
 718
 719 void VncView::clipboardSelectionChanged()
 720 {
 721     if (m_status != Connected)
 722         return;
 723
 724     if (m_clipboard->ownsSelection() || m_dontSendClipboard)
 725         return;
 726
 727     const QString text = m_clipboard->text(QClipboard::Selection);
 728
 729     vncThread.clientCut(text);
 730 }
 731
 732 void VncView::clipboardDataChanged()
 733 {
 734     if (m_status != Connected)
 735         return;
 736
 737     if (m_clipboard->ownsClipboard() || m_dontSendClipboard)
 738         return;
 739
 740     const QString text = m_clipboard->text(QClipboard::Clipboard);
 741
 742     vncThread.clientCut(text);
 743 }
 744
 745 //fake key events
 746 void VncView::sendKey(Qt::Key key)
 747 {
 748         //convert Qt::Key into x11 keysym
 749         int k = 0;
 750         switch(key) {
 751         case Qt::Key_Escape:
 752                 k = 0xff1b;
 753                 break;
 754         case Qt::Key_Tab:
 755                 k = 0xff09;
 756                 break;
 757         case Qt::Key_PageUp:
 758                 k = 0xff55;
 759                 break;
 760         case Qt::Key_PageDown:
 761                 k = 0xff56;
 762                 break;
 763         case Qt::Key_Return:
 764                 k = 0xff0d;
 765                 break;
 766         case Qt::Key_Insert:
 767                 k = 0xff63;
 768                 break;
 769         case Qt::Key_Delete:
 770                 k = 0xffff;
 771                 break;
 772         case Qt::Key_Home:
 773                 k = 0xff50;
 774                 break;
 775         case Qt::Key_End:
 776                 k = 0xff57;
 777                 break;
 778         case Qt::Key_Backspace:
 779                 k = 0xff08;
 780                 break;
 781         case Qt::Key_F1:
 782         case Qt::Key_F2:
 783         case Qt::Key_F3:
 784         case Qt::Key_F4:
 785         case Qt::Key_F5:
 786         case Qt::Key_F6:
 787         case Qt::Key_F7:
 788         case Qt::Key_F8:
 789         case Qt::Key_F9:
 790         case Qt::Key_F10:
 791         case Qt::Key_F11:
 792         case Qt::Key_F12:
 793                 k = 0xffbe + int(key - Qt::Key_F1);
 794                 break;
 795         case Qt::Key_Meta:
 796         case Qt::MetaModifier:
 797                 k = XK_Super_L;
 798                 break;
 799         case Qt::Key_Alt:
 800         case Qt::AltModifier:
 801                 k = XK_Alt_L;
 802                 break;
 803         case Qt::Key_Control:
 804         case Qt::ControlModifier:
 805                 k = XK_Control_L;
 806                 break;
 807         default:
 808                 kDebug(5011) << "sendKey(): Unhandled Qt::Key value " << key;
 809                 return;
 810         }
 811
 812         if (k == XK_Shift_L || k == XK_Control_L || k == XK_Meta_L || k == XK_Alt_L || k == XK_Super_L) {
 813                 if (m_mods.contains(k)) { //release
 814                         m_mods.remove(k);
 815                         vncThread.keyEvent(k, false);
 816                 } else { //press
 817                         m_mods[k] = true;
 818                         vncThread.keyEvent(k, true);
 819                 }
 820         } else { //normal key
 821                 vncThread.keyEvent(k, true);
 822                 vncThread.keyEvent(k, false);
 823         }
 824 }
 825
 826 void VncView::sendKeySequence(QKeySequence keys)
 827 {
 828         Q_ASSERT(keys.count() <= 1); //we can only handle a single combination
 829
 830         //to get at individual key presses, we split 'keys' into its components
 831         QList<int> key_list;
 832         for(int i = 0; ; i++) {
 833                 QString k = keys.toString().section('+', i, i);
 834                 if(k.isEmpty())
 835                         break;
 836                 //kDebug(5011) << "found key: " << k;
 837                 if(k == "Alt") {
 838                         key_list.append(Qt::Key_Alt);
 839                 } else if(k == "Ctrl") {
 840                         key_list.append(Qt::Key_Control);
 841                 } else if(k == "Meta") {
 842                         key_list.append(Qt::Key_Meta);
 843                 } else {
 844                         key_list.append(QKeySequence(k)[0]);
 845                 }
 846         }
 847
 848         for(int i = 0; i < key_list.count(); i++)
 849                 sendKey(Qt::Key(key_list.at(i)));
 850
 851         //release modifiers (everything before final key)
 852         for(int i = key_list.count()-2; i >= 0; i--)
 853                 sendKey(Qt::Key(key_list.at(i)));
 854 }
 855
 856 void VncView::reloadSettings()
 857 {
 858         QSettings settings;
 859         left_zoom = settings.value("left_zoom", 0).toInt();
 860         right_zoom = settings.value("right_zoom", 1).toInt();
 861         disable_tapping = settings.value("disable_tapping", false).toBool();
 862
 863         bool always_show_local_cursor = settings.value("always_show_local_cursor", false).toBool();
 864         if(always_show_local_cursor)
 865                 showDotCursor(CursorOn);
 866 }
 867
 868 //convert commitString into keyevents
 869 void VncView::inputMethodEvent(QInputMethodEvent *event)
 870 {
 871         //TODO handle replacements
 872         //NOTE for the return key to work Qt needs to enable multiline input, which only works for Q(Plain)TextEdit
 873
 874         //kDebug(5011) << event->commitString() << "|" << event->preeditString() << "|" << event->replacementLength() << "|" << event->replacementStart();
 875         QString letters = event->commitString();
 876         for(int i = 0; i < letters.length(); i++) {
 877                 char k = letters.at(i).toLatin1(); //works with all 'normal' keys, not umlauts.
 878                 if(!k) {
 879                         kDebug(5011) << "unhandled key";
 880                         continue;
 881                 }
 882                 vncThread.keyEvent(k, true);
 883                 vncThread.keyEvent(k, false);
 884         }
 885 }
 886
 887
 888 #include "moc_vncview.cpp"