src/qtui/inputwidget.cpp

   1 /***************************************************************************
   2  *   Copyright (C) 2005-2014 by the Quassel Project                        *
   3  *   devel@quassel-irc.org                                                 *
   4  *                                                                         *
   5  *   This program is free software; you can redistribute it and/or modify  *
   6  *   it under the terms of the GNU General Public License as published by  *
   7  *   the Free Software Foundation; either version 2 of the License, or     *
   8  *   (at your option) version 3.                                           *
   9  *                                                                         *
  10  *   This program is distributed in the hope that it will be useful,       *
  11  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  12  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  13  *   GNU General Public License for more details.                          *
  14  *                                                                         *
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  17  *   Free Software Foundation, Inc.,                                       *
  18  *   51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.         *
  19  ***************************************************************************/
  20
  21 #include "inputwidget.h"
  22
  23 #include "action.h"
  24 #include "actioncollection.h"
  25 #include "bufferview.h"
  26 #include "client.h"
  27 #include "iconloader.h"
  28 #include "ircuser.h"
  29 #include "networkmodel.h"
  30 #include "qtui.h"
  31 #include "qtuisettings.h"
  32 #include "tabcompleter.h"
  33 #include <QPainter>
  34
  35 const int leftMargin = 3;
  36
  37 InputWidget::InputWidget(QWidget *parent)
  38     : AbstractItemView(parent),
  39     _networkId(0)
  40 {
  41     ui.setupUi(this);
  42     connect(ui.ownNick, SIGNAL(activated(QString)), this, SLOT(changeNick(QString)));
  43
  44     layout()->setAlignment(ui.ownNick, Qt::AlignBottom);
  45     layout()->setAlignment(ui.inputEdit, Qt::AlignBottom);
  46     layout()->setAlignment(ui.showStyleButton, Qt::AlignBottom);
  47     layout()->setAlignment(ui.styleFrame, Qt::AlignBottom);
  48
  49     ui.styleFrame->setVisible(false);
  50
  51     setFocusProxy(ui.inputEdit);
  52     ui.ownNick->setFocusProxy(ui.inputEdit);
  53
  54     ui.ownNick->setSizeAdjustPolicy(QComboBox::AdjustToContents);
  55     ui.ownNick->installEventFilter(new MouseWheelFilter(this));
  56     ui.inputEdit->installEventFilter(this);
  57
  58     ui.inputEdit->setMinHeight(1);
  59     ui.inputEdit->setMaxHeight(5);
  60     ui.inputEdit->setMode(MultiLineEdit::MultiLine);
  61     ui.inputEdit->setPasteProtectionEnabled(true);
  62
  63     ui.boldButton->setIcon(SmallIcon("format-text-bold"));
  64     ui.italicButton->setIcon(SmallIcon("format-text-italic"));
  65     ui.underlineButton->setIcon(SmallIcon("format-text-underline"));
  66     ui.textcolorButton->setIcon(SmallIcon("format-text-color"));
  67     ui.highlightcolorButton->setIcon(SmallIcon("format-fill-color"));
  68     ui.encryptionIconLabel->hide();
  69
  70     _colorMenu = new QMenu();
  71     _colorFillMenu = new QMenu();
  72
  73     QStringList names;
  74     names << tr("White") << tr("Black") << tr("Dark blue") << tr("Dark green") << tr("Red") << tr("Dark red") << tr("Dark magenta")  << tr("Orange")
  75           << tr("Yellow") << tr("Green") << tr("Dark cyan") << tr("Cyan") << tr("Blue") << tr("Magenta") << tr("Dark gray") << tr("Light gray");
  76
  77     QPixmap pix(16, 16);
  78     for (int i = 0; i < inputLine()->mircColorMap().count(); i++) {
  79         pix.fill(inputLine()->mircColorMap().values()[i]);
  80         _colorMenu->addAction(pix, names[i])->setData(inputLine()->mircColorMap().keys()[i]);
  81         _colorFillMenu->addAction(pix, names[i])->setData(inputLine()->mircColorMap().keys()[i]);
  82     }
  83
  84     pix.fill(Qt::transparent);
  85     _colorMenu->addAction(pix, tr("Clear Color"))->setData("");
  86     _colorFillMenu->addAction(pix, tr("Clear Color"))->setData("");
  87
  88     ui.textcolorButton->setMenu(_colorMenu);
  89     connect(_colorMenu, SIGNAL(triggered(QAction *)), this, SLOT(colorChosen(QAction *)));
  90     ui.highlightcolorButton->setMenu(_colorFillMenu);
  91     connect(_colorFillMenu, SIGNAL(triggered(QAction *)), this, SLOT(colorHighlightChosen(QAction *)));
  92
  93     new TabCompleter(ui.inputEdit);
  94
  95     UiStyleSettings fs("Fonts");
  96     fs.notify("UseCustomInputWidgetFont", this, SLOT(setUseCustomFont(QVariant)));
  97     fs.notify("InputWidget", this, SLOT(setCustomFont(QVariant)));
  98     if (fs.value("UseCustomInputWidgetFont", false).toBool())
  99         setCustomFont(fs.value("InputWidget", QFont()));
 100
 101     UiSettings s("InputWidget");
 102
 103 #ifdef HAVE_KDE
 104     s.notify("EnableSpellCheck", this, SLOT(setEnableSpellCheck(QVariant)));
 105     setEnableSpellCheck(s.value("EnableSpellCheck", false));
 106 #endif
 107
 108     s.notify("EnableEmacsMode", this, SLOT(setEnableEmacsMode(QVariant)));
 109     setEnableEmacsMode(s.value("EnableEmacsMode", false));
 110
 111     s.notify("ShowNickSelector", this, SLOT(setShowNickSelector(QVariant)));
 112     setShowNickSelector(s.value("ShowNickSelector", true));
 113
 114     s.notify("ShowStyleButtons", this, SLOT(setShowStyleButtons(QVariant)));
 115     setShowStyleButtons(s.value("ShowStyleButtons", true));
 116
 117     s.notify("EnablePerChatHistory", this, SLOT(setEnablePerChatHistory(QVariant)));
 118     setEnablePerChatHistory(s.value("EnablePerChatHistory", false));
 119
 120     s.notify("MaxNumLines", this, SLOT(setMaxLines(QVariant)));
 121     setMaxLines(s.value("MaxNumLines", 5));
 122
 123     s.notify("EnableScrollBars", this, SLOT(setScrollBarsEnabled(QVariant)));
 124     setScrollBarsEnabled(s.value("EnableScrollBars", true));
 125
 126     s.notify("EnableLineWrap", this, SLOT(setLineWrapEnabled(QVariant)));
 127     setLineWrapEnabled(s.value("EnableLineWrap", false));
 128
 129     s.notify("EnableMultiLine", this, SLOT(setMultiLineEnabled(QVariant)));
 130     setMultiLineEnabled(s.value("EnableMultiLine", true));
 131
 132     ActionCollection *coll = QtUi::actionCollection();
 133
 134     Action *activateInputline = coll->add<Action>("FocusInputLine");
 135     connect(activateInputline, SIGNAL(triggered()), SLOT(setFocus()));
 136     activateInputline->setText(tr("Focus Input Line"));
 137     activateInputline->setShortcut(QKeySequence(Qt::CTRL + Qt::Key_L));
 138
 139     connect(inputLine(), SIGNAL(textEntered(QString)), SLOT(onTextEntered(QString)), Qt::QueuedConnection); // make sure the line is already reset, bug #984
 140     connect(inputLine(), SIGNAL(currentCharFormatChanged(QTextCharFormat)), this, SLOT(currentCharFormatChanged(QTextCharFormat)));
 141 }
 142
 143
 144 InputWidget::~InputWidget()
 145 {
 146 }
 147
 148
 149 void InputWidget::setUseCustomFont(const QVariant &v)
 150 {
 151     if (v.toBool()) {
 152         UiStyleSettings fs("Fonts");
 153         setCustomFont(fs.value("InputWidget"));
 154     }
 155     else
 156         setCustomFont(QFont());
 157 }
 158
 159
 160 void InputWidget::setCustomFont(const QVariant &v)
 161 {
 162     QFont font = v.value<QFont>();
 163     if (font.family().isEmpty())
 164         font = QApplication::font();
 165     // we don't want font styles as this conflics with mirc code richtext editing
 166     font.setBold(false);
 167     font.setItalic(false);
 168     font.setUnderline(false);
 169     font.setStrikeOut(false);
 170     ui.inputEdit->setCustomFont(font);
 171 }
 172
 173
 174 void InputWidget::setEnableSpellCheck(const QVariant &v)
 175 {
 176     ui.inputEdit->setSpellCheckEnabled(v.toBool());
 177 }
 178
 179
 180 void InputWidget::setEnableEmacsMode(const QVariant &v)
 181 {
 182     ui.inputEdit->setEmacsMode(v.toBool());
 183 }
 184
 185
 186 void InputWidget::setShowNickSelector(const QVariant &v)
 187 {
 188     ui.ownNick->setVisible(v.toBool());
 189 }
 190
 191
 192 void InputWidget::setShowStyleButtons(const QVariant &v)
 193 {
 194     ui.showStyleButton->setVisible(v.toBool());
 195 }
 196
 197
 198 void InputWidget::setEnablePerChatHistory(const QVariant &v)
 199 {
 200     _perChatHistory = v.toBool();
 201 }
 202
 203
 204 void InputWidget::setMaxLines(const QVariant &v)
 205 {
 206     ui.inputEdit->setMaxHeight(v.toInt());
 207 }
 208
 209
 210 void InputWidget::setScrollBarsEnabled(const QVariant &v)
 211 {
 212     ui.inputEdit->setScrollBarsEnabled(v.toBool());
 213 }
 214
 215
 216 void InputWidget::setLineWrapEnabled(const QVariant &v)
 217 {
 218     ui.inputEdit->setLineWrapEnabled(v.toBool());
 219 }
 220
 221
 222 void InputWidget::setMultiLineEnabled(const QVariant &v)
 223 {
 224     ui.inputEdit->setMode(v.toBool() ? MultiLineEdit::MultiLine : MultiLineEdit::SingleLine);
 225 }
 226
 227
 228 bool InputWidget::eventFilter(QObject *watched, QEvent *event)
 229 {
 230     if (event->type() != QEvent::KeyPress)
 231         return false;
 232
 233     QKeyEvent *keyEvent = static_cast<QKeyEvent *>(event);
 234
 235     // keys from BufferView should be sent to (and focus) the input line
 236     BufferView *view = qobject_cast<BufferView *>(watched);
 237     if (view) {
 238         if (keyEvent->text().length() == 1 && !(keyEvent->modifiers() & (Qt::ControlModifier ^ Qt::AltModifier))) { // normal key press
 239             QChar c = keyEvent->text().at(0);
 240             if (c.isLetterOrNumber() || c.isSpace() || c.isPunct() || c.isSymbol()) {
 241                 setFocus();
 242                 QCoreApplication::sendEvent(inputLine(), keyEvent);
 243                 return true;
 244             }
 245         }
 246         return false;
 247     }
 248     else if (watched == ui.inputEdit) {
 249         if (keyEvent->matches(QKeySequence::Find)) {
 250             QAction *act = GraphicalUi::actionCollection()->action("ToggleSearchBar");
 251             if (act) {
 252                 act->toggle();
 253                 return true;
 254             }
 255         }
 256         return false;
 257     }
 258     return false;
 259 }
 260
 261
 262 void InputWidget::currentChanged(const QModelIndex &current, const QModelIndex &previous)
 263 {
 264     BufferId currentBufferId = current.data(NetworkModel::BufferIdRole).value<BufferId>();
 265     BufferId previousBufferId = previous.data(NetworkModel::BufferIdRole).value<BufferId>();
 266
 267     if (_perChatHistory) {
 268         //backup
 269         historyMap[previousBufferId].history = inputLine()->history();
 270         historyMap[previousBufferId].tempHistory = inputLine()->tempHistory();
 271         historyMap[previousBufferId].idx = inputLine()->idx();
 272         historyMap[previousBufferId].inputLine = inputLine()->html();
 273
 274         //restore
 275         inputLine()->setHistory(historyMap[currentBufferId].history);
 276         inputLine()->setTempHistory(historyMap[currentBufferId].tempHistory);
 277         inputLine()->setIdx(historyMap[currentBufferId].idx);
 278         inputLine()->setHtml(historyMap[currentBufferId].inputLine);
 279         inputLine()->moveCursor(QTextCursor::End, QTextCursor::MoveAnchor);
 280
 281         // FIXME this really should be in MultiLineEdit (and the const int on top removed)
 282         QTextBlockFormat format = inputLine()->textCursor().blockFormat();
 283         format.setLeftMargin(leftMargin); // we want a little space between the frame and the contents
 284         inputLine()->textCursor().setBlockFormat(format);
 285     }
 286
 287     NetworkId networkId = current.data(NetworkModel::NetworkIdRole).value<NetworkId>();
 288     if (networkId == _networkId)
 289         return;
 290
 291     setNetwork(networkId);
 292     updateNickSelector();
 293     updateEnabledState();
 294 }
 295
 296
 297 void InputWidget::dataChanged(const QModelIndex &topLeft, const QModelIndex &bottomRight)
 298 {
 299     QItemSelectionRange changedArea(topLeft, bottomRight);
 300     if (changedArea.contains(selectionModel()->currentIndex())) {
 301         updateEnabledState();
 302
 303         bool encrypted = false;
 304
 305         IrcChannel *chan = qobject_cast<IrcChannel *>(Client::bufferModel()->data(selectionModel()->currentIndex(), NetworkModel::IrcChannelRole).value<QObject *>());
 306         if (chan)
 307             encrypted = chan->encrypted();
 308
 309         IrcUser *user = qobject_cast<IrcUser *>(Client::bufferModel()->data(selectionModel()->currentIndex(), NetworkModel::IrcUserRole).value<QObject *>());
 310         if (user)
 311             encrypted = user->encrypted();
 312
 313         if (encrypted)
 314             ui.encryptionIconLabel->show();
 315         else
 316             ui.encryptionIconLabel->hide();
 317     }
 318 }
 319
 320
 321 void InputWidget::rowsAboutToBeRemoved(const QModelIndex &parent, int start, int end)
 322 {
 323     NetworkId networkId;
 324     QModelIndex child;
 325     for (int row = start; row <= end; row++) {
 326         child = model()->index(row, 0, parent);
 327         if (NetworkModel::NetworkItemType != child.data(NetworkModel::ItemTypeRole).toInt())
 328             continue;
 329         networkId = child.data(NetworkModel::NetworkIdRole).value<NetworkId>();
 330         if (networkId == _networkId) {
 331             setNetwork(0);
 332             updateNickSelector();
 333             return;
 334         }
 335     }
 336 }
 337
 338
 339 void InputWidget::updateEnabledState()
 340 {
 341 // FIXME: Find a visualization for this that does not disable the widget!
 342 //        Disabling kills global action shortcuts, plus users sometimes need/want to enter text
 343 //        even in inactive channels.
 344 #if 0
 345     QModelIndex currentIndex = selectionModel()->currentIndex();
 346
 347     const Network *net = Client::networkModel()->networkByIndex(currentIndex);
 348     bool enabled = false;
 349     if (net) {
 350         // disable inputline if it's a channelbuffer we parted from or...
 351         enabled = (currentIndex.data(NetworkModel::ItemActiveRole).value<bool>() || (currentIndex.data(NetworkModel::BufferTypeRole).toInt() != BufferInfo::ChannelBuffer));
 352         // ... if we're not connected to the network at all
 353         enabled &= net->isConnected();
 354     }
 355
 356     ui.inputEdit->setEnabled(enabled);
 357 #endif
 358 }
 359
 360
 361 const Network *InputWidget::currentNetwork() const
 362 {
 363     return Client::network(_networkId);
 364 }
 365
 366
 367 BufferInfo InputWidget::currentBufferInfo() const
 368 {
 369     return selectionModel()->currentIndex().data(NetworkModel::BufferInfoRole).value<BufferInfo>();
 370 };
 371
 372 void InputWidget::setNetwork(NetworkId networkId)
 373 {
 374     if (_networkId == networkId)
 375         return;
 376
 377     const Network *previousNet = Client::network(_networkId);
 378     if (previousNet) {
 379         disconnect(previousNet, 0, this, 0);
 380         if (previousNet->me())
 381             disconnect(previousNet->me(), 0, this, 0);
 382     }
 383
 384     _networkId = networkId;
 385
 386     const Network *network = Client::network(networkId);
 387     if (network) {
 388         connect(network, SIGNAL(identitySet(IdentityId)), this, SLOT(setIdentity(IdentityId)));
 389         connectMyIrcUser();
 390         setIdentity(network->identity());
 391     }
 392     else {
 393         setIdentity(0);
 394         _networkId = 0;
 395     }
 396 }
 397
 398
 399 void InputWidget::connectMyIrcUser()
 400 {
 401     const Network *network = currentNetwork();
 402     if (network->me()) {
 403         connect(network->me(), SIGNAL(nickSet(const QString &)), this, SLOT(updateNickSelector()));
 404         connect(network->me(), SIGNAL(userModesSet(QString)), this, SLOT(updateNickSelector()));
 405         connect(network->me(), SIGNAL(userModesAdded(QString)), this, SLOT(updateNickSelector()));
 406         connect(network->me(), SIGNAL(userModesRemoved(QString)), this, SLOT(updateNickSelector()));
 407         connect(network->me(), SIGNAL(awaySet(bool)), this, SLOT(updateNickSelector()));
 408         disconnect(network, SIGNAL(myNickSet(const QString &)), this, SLOT(connectMyIrcUser()));
 409         updateNickSelector();
 410     }
 411     else {
 412         connect(network, SIGNAL(myNickSet(const QString &)), this, SLOT(connectMyIrcUser()));
 413     }
 414 }
 415
 416
 417 void InputWidget::setIdentity(IdentityId identityId)
 418 {
 419     if (_identityId == identityId)
 420         return;
 421
 422     const Identity *previousIdentity = Client::identity(_identityId);
 423     if (previousIdentity)
 424         disconnect(previousIdentity, 0, this, 0);
 425
 426     _identityId = identityId;
 427
 428     const Identity *identity = Client::identity(identityId);
 429     if (identity) {
 430         connect(identity, SIGNAL(nicksSet(QStringList)), this, SLOT(updateNickSelector()));
 431     }
 432     else {
 433         _identityId = 0;
 434     }
 435     updateNickSelector();
 436 }
 437
 438
 439 void InputWidget::updateNickSelector() const
 440 {
 441     ui.ownNick->clear();
 442
 443     const Network *net = currentNetwork();
 444     if (!net)
 445         return;
 446
 447     const Identity *identity = Client::identity(net->identity());
 448     if (!identity) {
 449         qWarning() << "InputWidget::updateNickSelector(): can't find Identity for Network" << net->networkId() << "IdentityId:" << net->identity();
 450         return;
 451     }
 452
 453     int nickIdx;
 454     QStringList nicks = identity->nicks();
 455     if ((nickIdx = nicks.indexOf(net->myNick())) == -1) {
 456         nicks.prepend(net->myNick());
 457         nickIdx = 0;
 458     }
 459
 460     if (nicks.isEmpty())
 461         return;
 462
 463     IrcUser *me = net->me();
 464     if (me) {
 465         nicks[nickIdx] = net->myNick();
 466         if (!me->userModes().isEmpty())
 467             nicks[nickIdx] += QString(" (+%1)").arg(me->userModes());
 468     }
 469
 470     ui.ownNick->addItems(nicks);
 471
 472     if (me && me->isAway())
 473         ui.ownNick->setItemData(nickIdx, SmallIcon("user-away"), Qt::DecorationRole);
 474
 475     ui.ownNick->setCurrentIndex(nickIdx);
 476 }
 477
 478
 479 void InputWidget::changeNick(const QString &newNick) const
 480 {
 481     const Network *net = currentNetwork();
 482     if (!net || net->isMyNick(newNick))
 483         return;
 484
 485     // we reset the nick selecter as we have no confirmation yet, that this will succeed.
 486     // if the action succeeds it will be properly updated anyways.
 487     updateNickSelector();
 488     Client::userInput(BufferInfo::fakeStatusBuffer(net->networkId()), QString("/NICK %1").arg(newNick));
 489 }
 490
 491
 492 void InputWidget::onTextEntered(const QString &text)
 493 {
 494     Client::userInput(currentBufferInfo(), text);
 495     ui.boldButton->setChecked(false);
 496     ui.underlineButton->setChecked(false);
 497     ui.italicButton->setChecked(false);
 498
 499     QTextCharFormat fmt;
 500     fmt.setFontWeight(QFont::Normal);
 501     fmt.setFontUnderline(false);
 502     fmt.setFontItalic(false);
 503     fmt.clearForeground();
 504     fmt.clearBackground();
 505     inputLine()->setCurrentCharFormat(fmt);
 506
 507 #ifdef HAVE_KDE
 508     // Set highlighter back to active in case it was deactivated by too many errors.
 509     if (ui.inputEdit->highlighter())
 510         ui.inputEdit->highlighter()->setActive(true);
 511 #endif
 512 }
 513
 514
 515 void InputWidget::mergeFormatOnSelection(const QTextCharFormat &format)
 516 {
 517     QTextCursor cursor = inputLine()->textCursor();
 518     cursor.mergeCharFormat(format);
 519     inputLine()->mergeCurrentCharFormat(format);
 520 }
 521
 522
 523 void InputWidget::setFormatOnSelection(const QTextCharFormat &format)
 524 {
 525     QTextCursor cursor = inputLine()->textCursor();
 526     cursor.setCharFormat(format);
 527     inputLine()->setCurrentCharFormat(format);
 528 }
 529
 530
 531 QTextCharFormat InputWidget::getFormatOfWordOrSelection()
 532 {
 533     QTextCursor cursor = inputLine()->textCursor();
 534     return cursor.charFormat();
 535 }
 536
 537
 538 void InputWidget::currentCharFormatChanged(const QTextCharFormat &format)
 539 {
 540     fontChanged(format.font());
 541 }
 542
 543
 544 void InputWidget::on_boldButton_clicked(bool checked)
 545 {
 546     QTextCharFormat fmt;
 547     fmt.setFontWeight(checked ? QFont::Bold : QFont::Normal);
 548     mergeFormatOnSelection(fmt);
 549 }
 550
 551
 552 void InputWidget::on_underlineButton_clicked(bool checked)
 553 {
 554     QTextCharFormat fmt;
 555     fmt.setFontUnderline(checked);
 556     mergeFormatOnSelection(fmt);
 557 }
 558
 559
 560 void InputWidget::on_italicButton_clicked(bool checked)
 561 {
 562     QTextCharFormat fmt;
 563     fmt.setFontItalic(checked);
 564     mergeFormatOnSelection(fmt);
 565 }
 566
 567
 568 void InputWidget::fontChanged(const QFont &f)
 569 {
 570     ui.boldButton->setChecked(f.bold());
 571     ui.italicButton->setChecked(f.italic());
 572     ui.underlineButton->setChecked(f.underline());
 573 }
 574
 575
 576 void InputWidget::colorChosen(QAction *action)
 577 {
 578     QTextCharFormat fmt;
 579     QColor color;
 580     if (qVariantValue<QString>(action->data()) == "") {
 581         color = Qt::transparent;
 582         fmt = getFormatOfWordOrSelection();
 583         fmt.clearForeground();
 584         setFormatOnSelection(fmt);
 585     }
 586     else {
 587         color = QColor(inputLine()->rgbColorFromMirc(qVariantValue<QString>(action->data())));
 588         fmt.setForeground(color);
 589         mergeFormatOnSelection(fmt);
 590     }
 591     ui.textcolorButton->setDefaultAction(action);
 592     ui.textcolorButton->setIcon(createColorToolButtonIcon(SmallIcon("format-text-color"), color));
 593 }
 594
 595
 596 void InputWidget::colorHighlightChosen(QAction *action)
 597 {
 598     QTextCharFormat fmt;
 599     QColor color;
 600     if (qVariantValue<QString>(action->data()) == "") {
 601         color = Qt::transparent;
 602         fmt = getFormatOfWordOrSelection();
 603         fmt.clearBackground();
 604         setFormatOnSelection(fmt);
 605     }
 606     else {
 607         color = QColor(inputLine()->rgbColorFromMirc(qVariantValue<QString>(action->data())));
 608         fmt.setBackground(color);
 609         mergeFormatOnSelection(fmt);
 610     }
 611     ui.highlightcolorButton->setDefaultAction(action);
 612     ui.highlightcolorButton->setIcon(createColorToolButtonIcon(SmallIcon("format-fill-color"), color));
 613 }
 614
 615
 616 void InputWidget::on_showStyleButton_toggled(bool checked)
 617 {
 618     ui.styleFrame->setVisible(checked);
 619     if (checked) {
 620         ui.showStyleButton->setArrowType(Qt::LeftArrow);
 621     }
 622     else {
 623         ui.showStyleButton->setArrowType(Qt::RightArrow);
 624     }
 625 }
 626
 627
 628 QIcon InputWidget::createColorToolButtonIcon(const QIcon &icon, const QColor &color)
 629 {
 630     QPixmap pixmap(16, 16);
 631     pixmap.fill(Qt::transparent);
 632     QPainter painter(&pixmap);
 633     QPixmap image = icon.pixmap(16, 16);
 634     QRect target(0, 0, 16, 14);
 635     QRect source(0, 0, 16, 14);
 636     painter.fillRect(QRect(0, 14, 16, 16), color);
 637     painter.drawPixmap(target, image, source);
 638
 639     return QIcon(pixmap);
 640 }
 641
 642
 643 // MOUSE WHEEL FILTER
 644 MouseWheelFilter::MouseWheelFilter(QObject *parent)
 645     : QObject(parent)
 646 {
 647 }
 648
 649
 650 bool MouseWheelFilter::eventFilter(QObject *obj, QEvent *event)
 651 {
 652     if (event->type() != QEvent::Wheel)
 653         return QObject::eventFilter(obj, event);
 654     else
 655         return true;
 656 }