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 <QCheckBox>
  34 #include <QDialog>
  35 #include <QImage>
  36 #include <QHBoxLayout>
  37 #include <QVBoxLayout>
  38 #include <QPainter>
  39 #include <QMouseEvent>
  40 #include <QPushButton>
  41 #include <QEvent>
  42 #include <QSettings>
  43 #include <QTime>
  44 #include <QTimer>
  45
  46
  47 // Definition of key modifier mask constants
  48 #define KMOD_Alt_R      0x01
  49 #define KMOD_Alt_L      0x02
  50 #define KMOD_Meta_L     0x04
  51 #define KMOD_Control_L  0x08
  52 #define KMOD_Shift_L    0x10
  53
  54 VncView::VncView(QWidget *parent, const KUrl &url, RemoteView::Quality quality)
  55         : RemoteView(parent),
  56         m_initDone(false),
  57         m_buttonMask(0),
  58         cursor_x(0),
  59         cursor_y(0),
  60         m_repaint(false),
  61         m_quitFlag(false),
  62         m_firstPasswordTry(true),
  63         m_dontSendClipboard(false),
  64         m_horizontalFactor(1.0),
  65         m_verticalFactor(1.0),
  66         m_forceLocalCursor(false),
  67         force_full_repaint(false),
  68         quality(quality)
  69 {
  70     m_url = url;
  71     m_host = url.host();
  72     m_port = url.port();
  73
  74     connect(&vncThread, SIGNAL(imageUpdated(int, int, int, int)), this, SLOT(updateImage(int, int, int, int)), Qt::BlockingQueuedConnection);
  75     connect(&vncThread, SIGNAL(gotCut(const QString&)), this, SLOT(setCut(const QString&)), Qt::BlockingQueuedConnection);
  76     connect(&vncThread, SIGNAL(passwordRequest()), this, SLOT(requestPassword()), Qt::BlockingQueuedConnection);
  77     connect(&vncThread, SIGNAL(outputErrorMessage(QString)), this, SLOT(outputErrorMessage(QString)));
  78
  79     m_clipboard = QApplication::clipboard();
  80     connect(m_clipboard, SIGNAL(selectionChanged()), this, SLOT(clipboardSelectionChanged()));
  81     connect(m_clipboard, SIGNAL(dataChanged()), this, SLOT(clipboardDataChanged()));
  82
  83     reloadSettings();
  84 }
  85
  86 VncView::~VncView()
  87 {
  88     unpressModifiers();
  89
  90     // Disconnect all signals so that we don't get any more callbacks from the client thread
  91     vncThread.disconnect();
  92
  93     startQuitting();
  94 }
  95
  96 void VncView::forceFullRepaint()
  97 {
  98         force_full_repaint = true;
  99         repaint();
 100 }
 101
 102 bool VncView::eventFilter(QObject *obj, QEvent *event)
 103 {
 104     if (m_viewOnly) {
 105         if (event->type() == QEvent::KeyPress ||
 106                 event->type() == QEvent::KeyRelease ||
 107                 event->type() == QEvent::MouseButtonDblClick ||
 108                 event->type() == QEvent::MouseButtonPress ||
 109                 event->type() == QEvent::MouseButtonRelease ||
 110                 event->type() == QEvent::Wheel ||
 111                 event->type() == QEvent::MouseMove)
 112             return true;
 113     }
 114     return RemoteView::eventFilter(obj, event);
 115 }
 116
 117 QSize VncView::framebufferSize()
 118 {
 119     return m_frame.size();
 120 }
 121
 122 QSize VncView::sizeHint() const
 123 {
 124     return size();
 125 }
 126
 127 QSize VncView::minimumSizeHint() const
 128 {
 129     return size();
 130 }
 131
 132 void VncView::scaleResize(int w, int h)
 133 {
 134     RemoteView::scaleResize(w, h);
 135
 136     kDebug(5011) << "scaleResize(): " <<w << h;
 137     if (m_scale) {
 138         m_verticalFactor = (qreal) h / m_frame.height();
 139         m_horizontalFactor = (qreal) w / m_frame.width();
 140
 141         m_verticalFactor = m_horizontalFactor = qMin(m_verticalFactor, m_horizontalFactor);
 142
 143         const qreal newW = m_frame.width() * m_horizontalFactor;
 144         const qreal newH = m_frame.height() * m_verticalFactor;
 145         /*
 146         setMaximumSize(newW, newH); //This is a hack to force Qt to center the view in the scroll area
 147         //also causes the widget's size to flicker
 148         */
 149         resize(newW, newH);
 150     }
 151 }
 152
 153
 154 void VncView::startQuitting()
 155 {
 156     kDebug(5011) << "about to quit";
 157
 158     const bool connected = status() == RemoteView::Connected;
 159
 160     setStatus(Disconnecting);
 161
 162     m_quitFlag = true;
 163
 164     if (connected) {
 165         vncThread.stop();
 166     }
 167
 168     vncThread.quit();
 169
 170     const bool quitSuccess = vncThread.wait(500);
 171
 172     kDebug(5011) << "startQuitting(): Quit VNC thread success:" << quitSuccess;
 173
 174     setStatus(Disconnected);
 175 }
 176
 177 bool VncView::isQuitting()
 178 {
 179     return m_quitFlag;
 180 }
 181
 182 bool VncView::start()
 183 {
 184     vncThread.setHost(m_host);
 185     vncThread.setPort(m_port);
 186
 187     vncThread.setQuality(quality);
 188
 189     // set local cursor on by default because low quality mostly means slow internet connection
 190     if (quality == RemoteView::Low) {
 191         showDotCursor(RemoteView::CursorOn);
 192     }
 193
 194     setStatus(Connecting);
 195
 196     vncThread.start();
 197     return true;
 198 }
 199
 200 bool VncView::supportsScaling() const
 201 {
 202     return true;
 203 }
 204
 205 bool VncView::supportsLocalCursor() const
 206 {
 207     return true;
 208 }
 209
 210 void VncView::requestPassword()
 211 {
 212     kDebug(5011) << "request password";
 213
 214     setStatus(Authenticating);
 215
 216     if (!m_url.password().isNull()) {
 217         vncThread.setPassword(m_url.password());
 218         return;
 219     }
 220
 221         QSettings settings;
 222         settings.beginGroup("hosts");
 223         QString password = settings.value(QString("%1/password").arg(m_host), "").toString();
 224         //check for saved password
 225         if(m_firstPasswordTry and !password.isEmpty()) {
 226                 kDebug(5011) << "Trying saved password";
 227                 m_firstPasswordTry = false;
 228                 vncThread.setPassword(password);
 229                 return;
 230         }
 231         m_firstPasswordTry = false;
 232
 233         //build dialog
 234         QDialog dialog(this);
 235         dialog.setWindowTitle(tr("Password required"));
 236
 237         QLineEdit passwordbox;
 238         passwordbox.setEchoMode(QLineEdit::Password);
 239         passwordbox.setText(password);
 240         QCheckBox save_password(tr("Save Password"));
 241         save_password.setChecked(!password.isEmpty()); //offer to overwrite saved password
 242         QPushButton ok_button(tr("Done"));
 243         ok_button.setMaximumWidth(100);
 244         connect(&ok_button, SIGNAL(clicked()),
 245                 &dialog, SLOT(accept()));
 246
 247         QHBoxLayout layout1;
 248         QVBoxLayout layout2;
 249         layout2.addWidget(&passwordbox);
 250         layout2.addWidget(&save_password);
 251         layout1.addLayout(&layout2);
 252         layout1.addWidget(&ok_button);
 253         dialog.setLayout(&layout1);
 254
 255         if(dialog.exec()) { //dialog accepted
 256                 password = passwordbox.text();
 257
 258                 if(save_password.isChecked()) {
 259                         kDebug(5011) << "Saving password for host '" << m_host << "'";
 260
 261                         settings.setValue(QString("%1/password").arg(m_host), password);
 262                         settings.sync();
 263                 }
 264
 265                 vncThread.setPassword(password);
 266         } else {
 267                 startQuitting();
 268         }
 269 }
 270
 271 void VncView::outputErrorMessage(const QString &message)
 272 {
 273     kDebug(5011) << message;
 274
 275     if (message == "INTERNAL:APPLE_VNC_COMPATIBILTY") {
 276         setCursor(localDotCursor());
 277         m_forceLocalCursor = true;
 278         return;
 279     }
 280
 281     startQuitting();
 282
 283     emit errorMessage(i18n("VNC failure"), message);
 284 }
 285
 286 void VncView::updateImage(int x, int y, int w, int h)
 287 {
 288         if(!QApplication::focusWidget()) { //no focus, we're probably minimized
 289                 return;
 290         }
 291      //kDebug(5011) << "got update" << width() << height();
 292      static unsigned int frames = 0;
 293      static unsigned int updates = 0;
 294      static QTime time = QTime::currentTime();
 295      updates++;
 296      if(updates % 100 == 0)
 297              kDebug(5011) << "u/s: " << updates/double(time.elapsed()) * 1000.0;
 298 if(x == 0 and y == 0) {
 299         frames++;
 300      if(frames % 100 == 0)
 301              kDebug(5011) << "f/s: " << frames/double(time.elapsed()) * 1000.0;
 302 }
 303
 304     m_x = x;
 305     m_y = y;
 306     m_w = w;
 307     m_h = h;
 308
 309     if (m_horizontalFactor != 1.0 || m_verticalFactor != 1.0) {
 310         // If the view is scaled, grow the update rectangle to avoid artifacts
 311         int x_extrapixels = 1.0/m_horizontalFactor+1;
 312         int y_extrapixels = 1.0/m_verticalFactor+1;
 313
 314         m_x-=x_extrapixels;
 315         m_y-=y_extrapixels;
 316         m_w+=2*x_extrapixels;
 317         m_h+=2*y_extrapixels;
 318     }
 319
 320     m_frame = vncThread.image();
 321
 322     if (!m_initDone) {
 323         setAttribute(Qt::WA_StaticContents);
 324         setAttribute(Qt::WA_OpaquePaintEvent);
 325         installEventFilter(this);
 326
 327         setCursor(((m_dotCursorState == CursorOn) || m_forceLocalCursor) ? localDotCursor() : Qt::BlankCursor);
 328
 329         setMouseTracking(true); // get mouse events even when there is no mousebutton pressed
 330         setFocusPolicy(Qt::WheelFocus);
 331         setStatus(Connected);
 332 //         emit framebufferSizeChanged(m_frame.width(), m_frame.height());
 333         emit connected();
 334
 335         if (m_scale) {
 336             if (parentWidget())
 337                 scaleResize(parentWidget()->width(), parentWidget()->height());
 338             else
 339                 scaleResize(width(), height());
 340         }
 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         if (m_scale) {
 351             //setMaximumSize(QSize(QWIDGETSIZE_MAX, QWIDGETSIZE_MAX));
 352             if (parentWidget())
 353                 scaleResize(parentWidget()->width(), parentWidget()->height());
 354         } else {
 355             kDebug(5011) << "Resizing: " << m_frame.width() << m_frame.height();
 356             resize(m_frame.width(), m_frame.height());
 357             //setMaximumSize(m_frame.width(), m_frame.height()); //This is a hack to force Qt to center the view in the scroll area
 358             //setMinimumSize(m_frame.width(), m_frame.height());
 359         }
 360         emit framebufferSizeChanged(m_frame.width(), m_frame.height());
 361     }
 362
 363     m_repaint = true;
 364     repaint(qRound(m_x * m_horizontalFactor), qRound(m_y * m_verticalFactor), qRound(m_w * m_horizontalFactor), qRound(m_h * m_verticalFactor));
 365     m_repaint = false;
 366 }
 367
 368 void VncView::setViewOnly(bool viewOnly)
 369 {
 370     RemoteView::setViewOnly(viewOnly);
 371
 372     m_dontSendClipboard = viewOnly;
 373
 374     if (viewOnly)
 375         setCursor(Qt::ArrowCursor);
 376     else
 377         setCursor(m_dotCursorState == CursorOn ? localDotCursor() : Qt::BlankCursor);
 378 }
 379
 380 void VncView::showDotCursor(DotCursorState state)
 381 {
 382     RemoteView::showDotCursor(state);
 383
 384     setCursor(state == CursorOn ? localDotCursor() : Qt::BlankCursor);
 385 }
 386
 387 void VncView::enableScaling(bool scale)
 388 {
 389     RemoteView::enableScaling(scale);
 390
 391     if (scale) {
 392         //setMaximumSize(QSize(QWIDGETSIZE_MAX, QWIDGETSIZE_MAX));
 393         //setMinimumSize(1, 1);
 394         if (parentWidget())
 395             scaleResize(parentWidget()->width(), parentWidget()->height());
 396             else
 397                 scaleResize(width(), height());
 398     } else {
 399         m_verticalFactor = 1.0;
 400         m_horizontalFactor = 1.0;
 401
 402         //setMaximumSize(m_frame.width(), m_frame.height()); //This is a hack to force Qt to center the view in the scroll area
 403         //setMinimumSize(m_frame.width(), m_frame.height());
 404         resize(m_frame.width(), m_frame.height());
 405     }
 406 }
 407
 408 void VncView::setCut(const QString &text)
 409 {
 410     m_dontSendClipboard = true;
 411     m_clipboard->setText(text, QClipboard::Clipboard);
 412     m_clipboard->setText(text, QClipboard::Selection);
 413     m_dontSendClipboard = false;
 414 }
 415
 416 void VncView::paintEvent(QPaintEvent *event)
 417 {
 418      //kDebug(5011) << "paint event: x: " << m_x << ", y: " << m_y << ", w: " << m_w << ", h: " << m_h;
 419     if (m_frame.isNull() || m_frame.format() == QImage::Format_Invalid) {
 420         kDebug(5011) << "no valid image to paint";
 421         RemoteView::paintEvent(event);
 422         return;
 423     }
 424
 425     event->accept();
 426
 427     QPainter painter(this);
 428
 429     if (m_repaint and !force_full_repaint) {
 430 //         kDebug(5011) << "normal repaint";
 431         painter.drawImage(QRect(qRound(m_x*m_horizontalFactor), qRound(m_y*m_verticalFactor),
 432                                 qRound(m_w*m_horizontalFactor), qRound(m_h*m_verticalFactor)),
 433                           m_frame.copy(m_x, m_y, m_w, m_h).scaled(qRound(m_w*m_horizontalFactor),
 434                                                                   qRound(m_h*m_verticalFactor),
 435                                                                   Qt::IgnoreAspectRatio, Qt::SmoothTransformation));
 436     } else {
 437          //kDebug(5011) << "resize repaint";
 438         QRect rect = event->rect();
 439         if (!force_full_repaint and (rect.width() != width() || rect.height() != height())) {
 440           //   kDebug(5011) << "Partial repaint";
 441             const int sx = rect.x()/m_horizontalFactor;
 442             const int sy = rect.y()/m_verticalFactor;
 443             const int sw = rect.width()/m_horizontalFactor;
 444             const int sh = rect.height()/m_verticalFactor;
 445             painter.drawImage(rect,
 446                               m_frame.copy(sx, sy, sw, sh).scaled(rect.width(), rect.height(),
 447                                                                   Qt::IgnoreAspectRatio, Qt::SmoothTransformation));
 448         } else {
 449              kDebug(5011) << "Full repaint" << width() << height() << m_frame.width() << m_frame.height();
 450             painter.drawImage(QRect(0, 0, width(), height()),
 451                               m_frame.scaled(m_frame.width() * m_horizontalFactor, m_frame.height() * m_verticalFactor,
 452                                              Qt::IgnoreAspectRatio, Qt::SmoothTransformation));
 453             force_full_repaint = false;
 454         }
 455     }
 456
 457     RemoteView::paintEvent(event);
 458 }
 459
 460 void VncView::resizeEvent(QResizeEvent *event)
 461 {
 462     RemoteView::resizeEvent(event);
 463     scaleResize(event->size().width(), event->size().height());
 464     forceFullRepaint();
 465 }
 466
 467 bool VncView::event(QEvent *event)
 468 {
 469     switch (event->type()) {
 470     case QEvent::KeyPress:
 471     case QEvent::KeyRelease:
 472 //         kDebug(5011) << "keyEvent";
 473         keyEventHandler(static_cast<QKeyEvent*>(event));
 474         return true;
 475         break;
 476     case QEvent::MouseButtonDblClick:
 477     case QEvent::MouseButtonPress:
 478     case QEvent::MouseButtonRelease:
 479     case QEvent::MouseMove:
 480 //         kDebug(5011) << "mouseEvent";
 481         mouseEventHandler(static_cast<QMouseEvent*>(event));
 482         return true;
 483         break;
 484     case QEvent::Wheel:
 485 //         kDebug(5011) << "wheelEvent";
 486         wheelEventHandler(static_cast<QWheelEvent*>(event));
 487         return true;
 488         break;
 489     case QEvent::WindowActivate: //input panel may have been closed, prevent IM from interfering with hardware keyboard
 490         setAttribute(Qt::WA_InputMethodEnabled, false);
 491         //fall through
 492     default:
 493         return RemoteView::event(event);
 494     }
 495 }
 496
 497 //call with e == 0 to flush held events
 498 void VncView::mouseEventHandler(QMouseEvent *e)
 499 {
 500         static bool tap_detected = false;
 501         static bool double_tap_detected = false;
 502         static bool tap_drag_detected = false;
 503         static QTime press_time;
 504         static QTime up_time; //used for double clicks/tap&drag, for time after first tap
 505
 506         const int TAP_PRESS_TIME = 180;
 507         const int DOUBLE_TAP_UP_TIME = 500;
 508
 509         if(!e) { //flush held taps
 510                 if(tap_detected) {
 511                         m_buttonMask |= 0x01;
 512                         vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 513                         m_buttonMask &= 0xfe;
 514                         vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 515                         tap_detected = false;
 516                 } else if(double_tap_detected and press_time.elapsed() > TAP_PRESS_TIME) { //got tap + another press -> tap & drag
 517                         m_buttonMask |= 0x01;
 518                         vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 519                         double_tap_detected = false;
 520                         tap_drag_detected = true;
 521                 }
 522
 523                 return;
 524         }
 525
 526         if(e->x() < 0 or e->y() < 0) { //QScrollArea tends to send invalid events sometimes...
 527                 e->ignore();
 528                 return;
 529         }
 530
 531         cursor_x = qRound(e->x()/m_horizontalFactor);
 532         cursor_y = qRound(e->y()/m_verticalFactor);
 533         vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask); // plain move event
 534
 535         if(disable_tapping) { //only move cursor
 536                 e->ignore();
 537                 return;
 538         }
 539
 540         if(e->type() == QEvent::MouseButtonPress or e->type() == QEvent::MouseButtonDblClick) {
 541                 press_time.start();
 542                 if(tap_detected and up_time.elapsed() < DOUBLE_TAP_UP_TIME) {
 543                         tap_detected = false;
 544                         double_tap_detected = true;
 545
 546                         QTimer::singleShot(TAP_PRESS_TIME, this, SLOT(mouseEventHandler()));
 547                 }
 548         } else if(e->type() == QEvent::MouseButtonRelease) {
 549                 if(tap_drag_detected) {
 550                         m_buttonMask &= 0xfe;
 551                         vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 552                         tap_drag_detected = false;
 553                 } else if(double_tap_detected) { //double click
 554                         double_tap_detected = false;
 555
 556                         m_buttonMask |= 0x01;
 557                         vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 558                         m_buttonMask &= 0xfe;
 559                         vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 560                         m_buttonMask |= 0x01;
 561                         vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 562                         m_buttonMask &= 0xfe;
 563                         vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 564                 } else if(press_time.elapsed() < TAP_PRESS_TIME) { //tap
 565                         up_time.start();
 566                         tap_detected = true;
 567                         QTimer::singleShot(DOUBLE_TAP_UP_TIME, this, SLOT(mouseEventHandler()));
 568                 }
 569
 570         }
 571
 572 /* for reference:
 573     if (e->type() != QEvent::MouseMove) {
 574         if ((e->type() == QEvent::MouseButtonPress)) {
 575             if (e->button() & Qt::LeftButton)
 576                 m_buttonMask |= 0x01;
 577             if (e->button() & Qt::MidButton)
 578                 m_buttonMask |= 0x02;
 579             if (e->button() & Qt::RightButton)
 580                 m_buttonMask |= 0x04;
 581         } else if (e->type() == QEvent::MouseButtonRelease) {
 582             if (e->button() & Qt::LeftButton)
 583                 m_buttonMask &= 0xfe;
 584             if (e->button() & Qt::MidButton)
 585                 m_buttonMask &= 0xfd;
 586             if (e->button() & Qt::RightButton)
 587                 m_buttonMask &= 0xfb;
 588         */
 589 }
 590
 591 void VncView::wheelEventHandler(QWheelEvent *event)
 592 {
 593     int eb = 0;
 594     if (event->delta() < 0)
 595         eb |= 0x10;
 596     else
 597         eb |= 0x8;
 598
 599     const int x = qRound(event->x() / m_horizontalFactor);
 600     const int y = qRound(event->y() / m_verticalFactor);
 601
 602         kDebug(5011) << "Wheelevent";
 603     vncThread.mouseEvent(x, y, eb | m_buttonMask);
 604     vncThread.mouseEvent(x, y, m_buttonMask);
 605 }
 606
 607 void VncView::keyEventHandler(QKeyEvent *e)
 608 {
 609     // strip away autorepeating KeyRelease; see bug #206598
 610     if (e->isAutoRepeat() && (e->type() == QEvent::KeyRelease)) {
 611         return;
 612     }
 613
 614 // parts of this code are based on http://italc.sourcearchive.com/documentation/1.0.9.1/vncview_8cpp-source.html
 615     rfbKeySym k = e->nativeVirtualKey();
 616
 617     // we do not handle Key_Backtab separately as the Shift-modifier
 618     // is already enabled
 619     if (e->key() == Qt::Key_Backtab) {
 620         k = XK_Tab;
 621     }
 622
 623     const bool pressed = (e->type() == QEvent::KeyPress);
 624
 625     // handle modifiers
 626     if (k == XK_Shift_L || k == XK_Control_L || k == XK_Meta_L || k == XK_Alt_L) {
 627         if (pressed) {
 628             m_mods[k] = true;
 629         } else if (m_mods.contains(k)) {
 630             m_mods.remove(k);
 631         } else {
 632             unpressModifiers();
 633         }
 634     }
 635
 636
 637         int current_zoom = -1;
 638         if(e->key() == Qt::Key_F8)
 639                 current_zoom = left_zoom;
 640         else if(e->key() == Qt::Key_F7)
 641                 current_zoom = right_zoom;
 642         else if (k) {
 643         //      kDebug(5011) << "got '" << e->text() << "'.";
 644                 vncThread.keyEvent(k, pressed);
 645         } else {
 646                 kDebug(5011) << "nativeVirtualKey() for '" << e->text() << "' failed.";
 647                 return;
 648         }
 649
 650         if(current_zoom == -1)
 651                 return;
 652
 653         //handle zoom buttons
 654         if(current_zoom == 0) { //left click
 655                 if(pressed)
 656                         m_buttonMask |= 0x01;
 657                 else
 658                         m_buttonMask &= 0xfe;
 659                 vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 660         } else if(current_zoom == 1) { //right click
 661                 if(pressed)
 662                         m_buttonMask |= 0x04;
 663                 else
 664                         m_buttonMask &= 0xfb;
 665                 vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 666         } else if(current_zoom == 2) { //middle click
 667                 if(pressed)
 668                         m_buttonMask |= 0x02;
 669                 else
 670                         m_buttonMask &= 0xfd;
 671                 vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 672         } else if(current_zoom == 3 and pressed) { //wheel up
 673                 int eb = 0x8;
 674                 vncThread.mouseEvent(cursor_x, cursor_y, eb | m_buttonMask);
 675                 vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 676         } else if(current_zoom == 4 and pressed) { //wheel down
 677                 int eb = 0x10;
 678                 vncThread.mouseEvent(cursor_x, cursor_y, eb | m_buttonMask);
 679                 vncThread.mouseEvent(cursor_x, cursor_y, m_buttonMask);
 680         } else if(current_zoom == 5) { //page up
 681                 vncThread.keyEvent(0xff55, pressed);
 682         } else if(current_zoom == 6) { //page down
 683                 vncThread.keyEvent(0xff56, pressed);
 684         }
 685 }
 686
 687 void VncView::unpressModifiers()
 688 {
 689     const QList<unsigned int> keys = m_mods.keys();
 690     QList<unsigned int>::const_iterator it = keys.constBegin();
 691     while (it != keys.end()) {
 692         vncThread.keyEvent(*it, false);
 693         it++;
 694     }
 695     m_mods.clear();
 696 }
 697
 698 void VncView::clipboardSelectionChanged()
 699 {
 700     kDebug(5011);
 701
 702     if (m_status != Connected)
 703         return;
 704
 705     if (m_clipboard->ownsSelection() || m_dontSendClipboard)
 706         return;
 707
 708     const QString text = m_clipboard->text(QClipboard::Selection);
 709
 710     vncThread.clientCut(text);
 711 }
 712
 713 void VncView::clipboardDataChanged()
 714 {
 715     kDebug(5011);
 716
 717     if (m_status != Connected)
 718         return;
 719
 720     if (m_clipboard->ownsClipboard() || m_dontSendClipboard)
 721         return;
 722
 723     const QString text = m_clipboard->text(QClipboard::Clipboard);
 724
 725     vncThread.clientCut(text);
 726 }
 727
 728 //fake key events
 729 void VncView::sendKey(Qt::Key key)
 730 {
 731         //convert Qt::Key into x11 keysym
 732         int k = 0;
 733         switch(key) {
 734         case Qt::Key_Escape:
 735                 k = 0xff1b;
 736                 break;
 737         case Qt::Key_Tab:
 738                 k = 0xff09;
 739                 break;
 740         case Qt::Key_PageUp:
 741                 k = 0xff55;
 742                 break;
 743         case Qt::Key_PageDown:
 744                 k = 0xff56;
 745                 break;
 746         case Qt::Key_Return:
 747                 k = 0xff0d;
 748                 break;
 749         case Qt::Key_Insert:
 750                 k = 0xff63;
 751                 break;
 752         case Qt::Key_Delete:
 753                 k = 0xffff;
 754                 break;
 755         case Qt::Key_Home:
 756                 k = 0xff50;
 757                 break;
 758         case Qt::Key_End:
 759                 k = 0xff57;
 760                 break;
 761         case Qt::Key_Backspace:
 762                 k = 0xff08;
 763                 break;
 764         case Qt::Key_F1:
 765         case Qt::Key_F2:
 766         case Qt::Key_F3:
 767         case Qt::Key_F4:
 768         case Qt::Key_F5:
 769         case Qt::Key_F6:
 770         case Qt::Key_F7:
 771         case Qt::Key_F8:
 772         case Qt::Key_F9:
 773         case Qt::Key_F10:
 774         case Qt::Key_F11:
 775         case Qt::Key_F12:
 776                 k = 0xffbe + int(key - Qt::Key_F1);
 777                 break;
 778         case Qt::Key_Meta:
 779         case Qt::MetaModifier:
 780                 k = XK_Super_L;
 781                 break;
 782         case Qt::Key_Alt:
 783         case Qt::AltModifier:
 784                 k = XK_Alt_L;
 785                 break;
 786         case Qt::Key_Control:
 787         case Qt::ControlModifier:
 788                 k = XK_Control_L;
 789                 break;
 790         default:
 791                 kDebug(5011) << "sendKey(): Unhandled Qt::Key value " << key;
 792                 return;
 793         }
 794
 795         if (k == XK_Shift_L || k == XK_Control_L || k == XK_Meta_L || k == XK_Alt_L || k == XK_Super_L) {
 796                 if (m_mods.contains(k)) { //release
 797                         m_mods.remove(k);
 798                         vncThread.keyEvent(k, false);
 799                 } else { //press
 800                         m_mods[k] = true;
 801                         vncThread.keyEvent(k, true);
 802                 }
 803         } else { //normal key
 804                 vncThread.keyEvent(k, true);
 805                 vncThread.keyEvent(k, false);
 806         }
 807 }
 808
 809 void VncView::sendKeySequence(QKeySequence keys)
 810 {
 811         Q_ASSERT(keys.count() <= 1); //we can only handle a single combination
 812
 813         //to get at individual key presses, we split 'keys' into its components
 814         QList<int> key_list;
 815         for(int i = 0; ; i++) {
 816                 QString k = keys.toString().section('+', i, i);
 817                 if(k.isEmpty())
 818                         break;
 819                 kDebug(5011) << "found key: " << k;
 820                 if(k == "Alt") {
 821                         key_list.append(Qt::Key_Alt);
 822                 } else if(k == "Ctrl") {
 823                         key_list.append(Qt::Key_Control);
 824                 } else if(k == "Meta") {
 825                         key_list.append(Qt::Key_Meta);
 826                 } else {
 827                         key_list.append(QKeySequence(k)[0]);
 828                 }
 829         }
 830
 831         for(int i = 0; i < key_list.count(); i++)
 832                 sendKey(Qt::Key(key_list.at(i)));
 833
 834         //release modifiers (everything before final key)
 835         for(int i = key_list.count()-2; i >= 0; i--)
 836                 sendKey(Qt::Key(key_list.at(i)));
 837 }
 838
 839 void VncView::reloadSettings()
 840 {
 841         QSettings settings;
 842         left_zoom = settings.value("left_zoom", 0).toInt();
 843         right_zoom = settings.value("right_zoom", 1).toInt();
 844         disable_tapping = settings.value("disable_tapping", false).toBool();
 845 }
 846
 847 //convert commitString into keyevents
 848 void VncView::inputMethodEvent(QInputMethodEvent *event)
 849 {
 850         //TODO handle replacements
 851         //NOTE for the return key to work Qt needs to enable multiline input, which only works for Q(Plain)TextEdit
 852
 853         //kDebug(5011) << event->commitString() << "|" << event->preeditString() << "|" << event->replacementLength() << "|" << event->replacementStart();
 854         QString letters = event->commitString();
 855         for(int i = 0; i < letters.length(); i++) {
 856                 char k = letters.at(i).toLatin1(); //works with all 'normal' keys, not umlauts.
 857                 if(!k) {
 858                         kDebug(5011) << "unhandled key";
 859                         continue;
 860                 }
 861                 vncThread.keyEvent(k, true);
 862                 vncThread.keyEvent(k, false);
 863         }
 864 }
 865
 866
 867 #include "moc_vncview.cpp"