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[] =
 461                 { 0xff, 0x8e, 0x8e, 0x8e, 0xff };
 462
 463                 QBitmap cursorBitmap = QBitmap::fromData(QSize(5,5), bits , QImage::Format_Mono);
 464                 cursorBitmap.setMask(cursorBitmap);
 465
 466                 painter.drawPixmap(cursor_x, cursor_y, cursorBitmap);
 467         }
 468
 469     RemoteView::paintEvent(event);
 470 }
 471
 472 void VncView::resizeEvent(QResizeEvent *event)
 473 {
 474     RemoteView::resizeEvent(event);
 475     scaleResize(event->size().width(), event->size().height());
 476     forceFullRepaint();
 477 }
 478
 479 bool VncView::event(QEvent *event)
 480 {
 481     switch (event->type()) {
 482     case QEvent::KeyPress:
 483     case QEvent::KeyRelease:
 484 //         kDebug(5011) << "keyEvent";
 485         keyEventHandler(static_cast<QKeyEvent*>(event));
 486         return true;
 487         break;
 488     case QEvent::MouseButtonDblClick:
 489     case QEvent::MouseButtonPress:
 490     case QEvent::MouseButtonRelease:
 491     case QEvent::MouseMove:
 492 //         kDebug(5011) << "mouseEvent";
 493         mouseEventHandler(static_cast<QMouseEvent*>(event));
 494         return true;
 495         break;
 496     case QEvent::Wheel:
 497 //         kDebug(5011) << "wheelEvent";
 498         wheelEventHandler(static_cast<QWheelEvent*>(event));
 499         return true;
 500         break;
 501     case QEvent::WindowActivate: //input panel may have been closed, prevent IM from interfering with hardware keyboard
 502         setAttribute(Qt::WA_InputMethodEnabled, false);
 503         //fall through
 504     default:
 505         return RemoteView::event(event);
 506     }
 507 }
 508
 509 //call with e == 0 to flush held events
 510 void VncView::mouseEventHandler(QMouseEvent *e)
 511 {
 512         static bool tap_detected = false;
 513         static bool double_tap_detected = false;
 514         static bool tap_drag_detected = false;
 515         static QTime press_time;
 516         static QTime up_time; //used for double clicks/tap&drag, for time after first tap
 517
 518         const int TAP_PRESS_TIME = 180;
 519         const int DOUBLE_TAP_UP_TIME = 500;
 520
 521         if(!e) { //flush held taps
 522                 if(tap_detected) {
 523                         m_buttonMask |= 0x01;
 524                         vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 525                         m_buttonMask &= 0xfe;
 526                         vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 527                         tap_detected = false;
 528                 } else if(double_tap_detected and press_time.elapsed() > TAP_PRESS_TIME) { //got tap + another press -> tap & drag
 529                         m_buttonMask |= 0x01;
 530                         vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 531                         double_tap_detected = false;
 532                         tap_drag_detected = true;
 533                 }
 534
 535                 return;
 536         }
 537
 538         if(e->x() < 0 or e->y() < 0) { //QScrollArea tends to send invalid events sometimes...
 539                 e->ignore();
 540                 return;
 541         }
 542
 543         cursor_x = qRound(e->x()/m_horizontalFactor);
 544         cursor_y = qRound(e->y()/m_verticalFactor);
 545         vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask); // plain move event
 546
 547         if(disable_tapping) { //only move cursor
 548                 e->ignore();
 549                 return;
 550         }
 551
 552         if(e->type() == QEvent::MouseButtonPress or e->type() == QEvent::MouseButtonDblClick) {
 553                 press_time.start();
 554                 if(tap_detected and up_time.elapsed() < DOUBLE_TAP_UP_TIME) {
 555                         tap_detected = false;
 556                         double_tap_detected = true;
 557
 558                         QTimer::singleShot(TAP_PRESS_TIME, this, SLOT(mouseEventHandler()));
 559                 }
 560         } else if(e->type() == QEvent::MouseButtonRelease) {
 561                 if(tap_drag_detected) {
 562                         m_buttonMask &= 0xfe;
 563                         vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 564                         tap_drag_detected = false;
 565                 } else if(double_tap_detected) { //double click
 566                         double_tap_detected = false;
 567
 568                         m_buttonMask |= 0x01;
 569                         vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 570                         m_buttonMask &= 0xfe;
 571                         vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 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                 } else if(press_time.elapsed() < TAP_PRESS_TIME) { //tap
 577                         up_time.start();
 578                         tap_detected = true;
 579                         QTimer::singleShot(DOUBLE_TAP_UP_TIME, this, SLOT(mouseEventHandler()));
 580                 }
 581
 582         }
 583
 584 /* for reference:
 585     if (e->type() != QEvent::MouseMove) {
 586         if ((e->type() == QEvent::MouseButtonPress)) {
 587             if (e->button() & Qt::LeftButton)
 588                 m_buttonMask |= 0x01;
 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::LeftButton)
 595                 m_buttonMask &= 0xfe;
 596             if (e->button() & Qt::MidButton)
 597                 m_buttonMask &= 0xfd;
 598             if (e->button() & Qt::RightButton)
 599                 m_buttonMask &= 0xfb;
 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         kDebug(5011) << "Wheelevent";
 615     vncThread.mouseEvent(x, y, eb | m_buttonMask);
 616     vncThread.mouseEvent(x, y, m_buttonMask);
 617 }
 618
 619 void VncView::keyEventHandler(QKeyEvent *e)
 620 {
 621     // strip away autorepeating KeyRelease; see bug #206598
 622     if (e->isAutoRepeat() && (e->type() == QEvent::KeyRelease)) {
 623         return;
 624     }
 625
 626 // parts of this code are based on http://italc.sourcearchive.com/documentation/1.0.9.1/vncview_8cpp-source.html
 627     rfbKeySym k = e->nativeVirtualKey();
 628
 629     // we do not handle Key_Backtab separately as the Shift-modifier
 630     // is already enabled
 631     if (e->key() == Qt::Key_Backtab) {
 632         k = XK_Tab;
 633     }
 634
 635     const bool pressed = (e->type() == QEvent::KeyPress);
 636
 637     // handle modifiers
 638     if (k == XK_Shift_L || k == XK_Control_L || k == XK_Meta_L || k == XK_Alt_L) {
 639         if (pressed) {
 640             m_mods[k] = true;
 641         } else if (m_mods.contains(k)) {
 642             m_mods.remove(k);
 643         } else {
 644             unpressModifiers();
 645         }
 646     }
 647
 648
 649         int current_zoom = -1;
 650         if(e->key() == Qt::Key_F8)
 651                 current_zoom = left_zoom;
 652         else if(e->key() == Qt::Key_F7)
 653                 current_zoom = right_zoom;
 654         else if (k) {
 655         //      kDebug(5011) << "got '" << e->text() << "'.";
 656                 vncThread.keyEvent(k, pressed);
 657         } else {
 658                 kDebug(5011) << "nativeVirtualKey() for '" << e->text() << "' failed.";
 659                 return;
 660         }
 661
 662         if(current_zoom == -1)
 663                 return;
 664
 665         //handle zoom buttons
 666         if(current_zoom == 0) { //left click
 667                 if(pressed)
 668                         m_buttonMask |= 0x01;
 669                 else
 670                         m_buttonMask &= 0xfe;
 671                 vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 672         } else if(current_zoom == 1) { //right click
 673                 if(pressed)
 674                         m_buttonMask |= 0x04;
 675                 else
 676                         m_buttonMask &= 0xfb;
 677                 vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 678         } else if(current_zoom == 2) { //middle click
 679                 if(pressed)
 680                         m_buttonMask |= 0x02;
 681                 else
 682                         m_buttonMask &= 0xfd;
 683                 vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 684         } else if(current_zoom == 3 and pressed) { //wheel up
 685                 int eb = 0x8;
 686                 vncThread.mouseEvent(cursor_x, cursor_y, eb | m_buttonMask);
 687                 vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 688         } else if(current_zoom == 4 and pressed) { //wheel down
 689                 int eb = 0x10;
 690                 vncThread.mouseEvent(cursor_x, cursor_y, eb | m_buttonMask);
 691                 vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 692         } else if(current_zoom == 5) { //page up
 693                 vncThread.keyEvent(0xff55, pressed);
 694         } else if(current_zoom == 6) { //page down
 695                 vncThread.keyEvent(0xff56, pressed);
 696         }
 697 }
 698
 699 void VncView::unpressModifiers()
 700 {
 701     const QList<unsigned int> keys = m_mods.keys();
 702     QList<unsigned int>::const_iterator it = keys.constBegin();
 703     while (it != keys.end()) {
 704         vncThread.keyEvent(*it, false);
 705         it++;
 706     }
 707     m_mods.clear();
 708 }
 709
 710 void VncView::clipboardSelectionChanged()
 711 {
 712     kDebug(5011);
 713
 714     if (m_status != Connected)
 715         return;
 716
 717     if (m_clipboard->ownsSelection() || m_dontSendClipboard)
 718         return;
 719
 720     const QString text = m_clipboard->text(QClipboard::Selection);
 721
 722     vncThread.clientCut(text);
 723 }
 724
 725 void VncView::clipboardDataChanged()
 726 {
 727     kDebug(5011);
 728
 729     if (m_status != Connected)
 730         return;
 731
 732     if (m_clipboard->ownsClipboard() || m_dontSendClipboard)
 733         return;
 734
 735     const QString text = m_clipboard->text(QClipboard::Clipboard);
 736
 737     vncThread.clientCut(text);
 738 }
 739
 740 //fake key events
 741 void VncView::sendKey(Qt::Key key)
 742 {
 743         //convert Qt::Key into x11 keysym
 744         int k = 0;
 745         switch(key) {
 746         case Qt::Key_Escape:
 747                 k = 0xff1b;
 748                 break;
 749         case Qt::Key_Tab:
 750                 k = 0xff09;
 751                 break;
 752         case Qt::Key_PageUp:
 753                 k = 0xff55;
 754                 break;
 755         case Qt::Key_PageDown:
 756                 k = 0xff56;
 757                 break;
 758         case Qt::Key_Return:
 759                 k = 0xff0d;
 760                 break;
 761         case Qt::Key_Insert:
 762                 k = 0xff63;
 763                 break;
 764         case Qt::Key_Delete:
 765                 k = 0xffff;
 766                 break;
 767         case Qt::Key_Home:
 768                 k = 0xff50;
 769                 break;
 770         case Qt::Key_End:
 771                 k = 0xff57;
 772                 break;
 773         case Qt::Key_Backspace:
 774                 k = 0xff08;
 775                 break;
 776         case Qt::Key_F1:
 777         case Qt::Key_F2:
 778         case Qt::Key_F3:
 779         case Qt::Key_F4:
 780         case Qt::Key_F5:
 781         case Qt::Key_F6:
 782         case Qt::Key_F7:
 783         case Qt::Key_F8:
 784         case Qt::Key_F9:
 785         case Qt::Key_F10:
 786         case Qt::Key_F11:
 787         case Qt::Key_F12:
 788                 k = 0xffbe + int(key - Qt::Key_F1);
 789                 break;
 790         case Qt::Key_Meta:
 791         case Qt::MetaModifier:
 792                 k = XK_Super_L;
 793                 break;
 794         case Qt::Key_Alt:
 795         case Qt::AltModifier:
 796                 k = XK_Alt_L;
 797                 break;
 798         case Qt::Key_Control:
 799         case Qt::ControlModifier:
 800                 k = XK_Control_L;
 801                 break;
 802         default:
 803                 kDebug(5011) << "sendKey(): Unhandled Qt::Key value " << key;
 804                 return;
 805         }
 806
 807         if (k == XK_Shift_L || k == XK_Control_L || k == XK_Meta_L || k == XK_Alt_L || k == XK_Super_L) {
 808                 if (m_mods.contains(k)) { //release
 809                         m_mods.remove(k);
 810                         vncThread.keyEvent(k, false);
 811                 } else { //press
 812                         m_mods[k] = true;
 813                         vncThread.keyEvent(k, true);
 814                 }
 815         } else { //normal key
 816                 vncThread.keyEvent(k, true);
 817                 vncThread.keyEvent(k, false);
 818         }
 819 }
 820
 821 void VncView::sendKeySequence(QKeySequence keys)
 822 {
 823         Q_ASSERT(keys.count() <= 1); //we can only handle a single combination
 824
 825         //to get at individual key presses, we split 'keys' into its components
 826         QList<int> key_list;
 827         for(int i = 0; ; i++) {
 828                 QString k = keys.toString().section('+', i, i);
 829                 if(k.isEmpty())
 830                         break;
 831                 kDebug(5011) << "found key: " << k;
 832                 if(k == "Alt") {
 833                         key_list.append(Qt::Key_Alt);
 834                 } else if(k == "Ctrl") {
 835                         key_list.append(Qt::Key_Control);
 836                 } else if(k == "Meta") {
 837                         key_list.append(Qt::Key_Meta);
 838                 } else {
 839                         key_list.append(QKeySequence(k)[0]);
 840                 }
 841         }
 842
 843         for(int i = 0; i < key_list.count(); i++)
 844                 sendKey(Qt::Key(key_list.at(i)));
 845
 846         //release modifiers (everything before final key)
 847         for(int i = key_list.count()-2; i >= 0; i--)
 848                 sendKey(Qt::Key(key_list.at(i)));
 849 }
 850
 851 void VncView::reloadSettings()
 852 {
 853         QSettings settings;
 854         left_zoom = settings.value("left_zoom", 0).toInt();
 855         right_zoom = settings.value("right_zoom", 1).toInt();
 856         disable_tapping = settings.value("disable_tapping", false).toBool();
 857 }
 858
 859 //convert commitString into keyevents
 860 void VncView::inputMethodEvent(QInputMethodEvent *event)
 861 {
 862         //TODO handle replacements
 863         //NOTE for the return key to work Qt needs to enable multiline input, which only works for Q(Plain)TextEdit
 864
 865         //kDebug(5011) << event->commitString() << "|" << event->preeditString() << "|" << event->replacementLength() << "|" << event->replacementStart();
 866         QString letters = event->commitString();
 867         for(int i = 0; i < letters.length(); i++) {
 868                 char k = letters.at(i).toLatin1(); //works with all 'normal' keys, not umlauts.
 869                 if(!k) {
 870                         kDebug(5011) << "unhandled key";
 871                         continue;
 872                 }
 873                 vncThread.keyEvent(k, true);
 874                 vncThread.keyEvent(k, false);
 875         }
 876 }
 877
 878
 879 #include "moc_vncview.cpp"