src/qtui/inputwidget.cpp

   1 /***************************************************************************
   2  *   Copyright (C) 2005-2015 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 <QIcon>
  24
  25 #include "action.h"
  26 #include "actioncollection.h"
  27 #include "bufferview.h"
  28 #include "client.h"
  29 #include "ircuser.h"
  30 #include "networkmodel.h"
  31 #include "qtui.h"
  32 #include "qtuisettings.h"
  33 #include "tabcompleter.h"
  34 #include <QPainter>
  35
  36 const int leftMargin = 3;
  37
  38 InputWidget::InputWidget(QWidget *parent)
  39     : AbstractItemView(parent),
  40     _networkId(0)
  41 {
  42     ui.setupUi(this);
  43     connect(ui.ownNick, SIGNAL(activated(QString)), this, SLOT(changeNick(QString)));
  44
  45     layout()->setAlignment(ui.ownNick, Qt::AlignBottom);
  46     layout()->setAlignment(ui.inputEdit, Qt::AlignBottom);
  47     layout()->setAlignment(ui.showStyleButton, Qt::AlignBottom);
  48     layout()->setAlignment(ui.styleFrame, Qt::AlignBottom);
  49
  50     ui.styleFrame->setVisible(false);
  51
  52     setFocusProxy(ui.inputEdit);
  53     ui.ownNick->setFocusProxy(ui.inputEdit);
  54
  55     ui.ownNick->setSizeAdjustPolicy(QComboBox::AdjustToContents);
  56     ui.ownNick->installEventFilter(new MouseWheelFilter(this));
  57     ui.inputEdit->installEventFilter(this);
  58
  59     ui.inputEdit->setMinHeight(1);
  60     ui.inputEdit->setMaxHeight(5);
  61     ui.inputEdit->setMode(MultiLineEdit::MultiLine);
  62     ui.inputEdit->setPasteProtectionEnabled(true);
  63
  64     ui.boldButton->setIcon(QIcon::fromTheme("format-text-bold"));
  65     ui.italicButton->setIcon(QIcon::fromTheme("format-text-italic"));
  66     ui.underlineButton->setIcon(QIcon::fromTheme("format-text-underline"));
  67     ui.textcolorButton->setIcon(QIcon::fromTheme("format-text-color"));
  68     ui.highlightcolorButton->setIcon(QIcon::fromTheme("format-fill-color"));
  69     ui.encryptionIconLabel->hide();
  70
  71     _colorMenu = new QMenu();
  72     _colorFillMenu = new QMenu();
  73
  74     QStringList names;
  75     names << tr("White") << tr("Black") << tr("Dark blue") << tr("Dark green") << tr("Red") << tr("Dark red") << tr("Dark magenta")  << tr("Orange")
  76           << tr("Yellow") << tr("Green") << tr("Dark cyan") << tr("Cyan") << tr("Blue") << tr("Magenta") << tr("Dark gray") << tr("Light gray");
  77
  78     QPixmap pix(16, 16);
  79     for (int i = 0; i < inputLine()->mircColorMap().count(); i++) {
  80         pix.fill(inputLine()->mircColorMap().values()[i]);
  81         _colorMenu->addAction(pix, names[i])->setData(inputLine()->mircColorMap().keys()[i]);
  82         _colorFillMenu->addAction(pix, names[i])->setData(inputLine()->mircColorMap().keys()[i]);
  83     }
  84
  85     pix.fill(Qt::transparent);
  86     _colorMenu->addAction(pix, tr("Clear Color"))->setData("");
  87     _colorFillMenu->addAction(pix, tr("Clear Color"))->setData("");
  88
  89     ui.textcolorButton->setMenu(_colorMenu);
  90     connect(_colorMenu, SIGNAL(triggered(QAction *)), this, SLOT(colorChosen(QAction *)));
  91     ui.highlightcolorButton->setMenu(_colorFillMenu);
  92     connect(_colorFillMenu, SIGNAL(triggered(QAction *)), this, SLOT(colorHighlightChosen(QAction *)));
  93
  94     new TabCompleter(ui.inputEdit);
  95
  96     UiStyleSettings fs("Fonts");
  97     fs.notify("UseCustomInputWidgetFont", this, SLOT(setUseCustomFont(QVariant)));
  98     fs.notify("InputWidget", this, SLOT(setCustomFont(QVariant)));
  99     if (fs.value("UseCustomInputWidgetFont", false).toBool())
 100         setCustomFont(fs.value("InputWidget", QFont()));
 101
 102     UiSettings s("InputWidget");
 103
 104 #ifdef HAVE_KDE
 105     s.notify("EnableSpellCheck", this, SLOT(setEnableSpellCheck(QVariant)));
 106     setEnableSpellCheck(s.value("EnableSpellCheck", false));
 107 #endif
 108
 109     s.notify("EnableEmacsMode", this, SLOT(setEnableEmacsMode(QVariant)));
 110     setEnableEmacsMode(s.value("EnableEmacsMode", false));
 111
 112     s.notify("ShowNickSelector", this, SLOT(setShowNickSelector(QVariant)));
 113     setShowNickSelector(s.value("ShowNickSelector", true));
 114
 115     s.notify("ShowStyleButtons", this, SLOT(setShowStyleButtons(QVariant)));
 116     setShowStyleButtons(s.value("ShowStyleButtons", true));
 117
 118     s.notify("EnablePerChatHistory", this, SLOT(setEnablePerChatHistory(QVariant)));
 119     setEnablePerChatHistory(s.value("EnablePerChatHistory", false));
 120
 121     s.notify("MaxNumLines", this, SLOT(setMaxLines(QVariant)));
 122     setMaxLines(s.value("MaxNumLines", 5));
 123
 124     s.notify("EnableScrollBars", this, SLOT(setScrollBarsEnabled(QVariant)));
 125     setScrollBarsEnabled(s.value("EnableScrollBars", true));
 126
 127     s.notify("EnableLineWrap", this, SLOT(setLineWrapEnabled(QVariant)));
 128     setLineWrapEnabled(s.value("EnableLineWrap", false));
 129
 130     s.notify("EnableMultiLine", this, SLOT(setMultiLineEnabled(QVariant)));
 131     setMultiLineEnabled(s.value("EnableMultiLine", true));
 132
 133     ActionCollection *coll = QtUi::actionCollection();
 134
 135     Action *activateInputline = coll->add<Action>("FocusInputLine");
 136     connect(activateInputline, SIGNAL(triggered()), SLOT(setFocus()));
 137     activateInputline->setText(tr("Focus Input Line"));
 138     activateInputline->setShortcut(QKeySequence(Qt::CTRL + Qt::Key_L));
 139
 140     connect(inputLine(), SIGNAL(textEntered(QString)), SLOT(onTextEntered(QString)), Qt::QueuedConnection); // make sure the line is already reset, bug #984
 141     connect(inputLine(), SIGNAL(currentCharFormatChanged(QTextCharFormat)), this, SLOT(currentCharFormatChanged(QTextCharFormat)));
 142 }
 143
 144
 145 InputWidget::~InputWidget()
 146 {
 147 }
 148
 149
 150 void InputWidget::setUseCustomFont(const QVariant &v)
 151 {
 152     if (v.toBool()) {
 153         UiStyleSettings fs("Fonts");
 154         setCustomFont(fs.value("InputWidget"));
 155     }
 156     else
 157         setCustomFont(QFont());
 158 }
 159
 160
 161 void InputWidget::setCustomFont(const QVariant &v)
 162 {
 163     QFont font = v.value<QFont>();
 164     if (font.family().isEmpty())
 165         font = QApplication::font();
 166     // we don't want font styles as this conflics with mirc code richtext editing
 167     font.setBold(false);
 168     font.setItalic(false);
 169     font.setUnderline(false);
 170     font.setStrikeOut(false);
 171     ui.inputEdit->setCustomFont(font);
 172 }
 173
 174
 175 void InputWidget::setEnableSpellCheck(const QVariant &v)
 176 {
 177     ui.inputEdit->setSpellCheckEnabled(v.toBool());
 178 }
 179
 180
 181 void InputWidget::setEnableEmacsMode(const QVariant &v)
 182 {
 183     ui.inputEdit->setEmacsMode(v.toBool());
 184 }
 185
 186
 187 void InputWidget::setShowNickSelector(const QVariant &v)
 188 {
 189     ui.ownNick->setVisible(v.toBool());
 190 }
 191
 192
 193 void InputWidget::setShowStyleButtons(const QVariant &v)
 194 {
 195     ui.showStyleButton->setVisible(v.toBool());
 196 }
 197
 198
 199 void InputWidget::setEnablePerChatHistory(const QVariant &v)
 200 {
 201     _perChatHistory = v.toBool();
 202 }
 203
 204
 205 void InputWidget::setMaxLines(const QVariant &v)
 206 {
 207     ui.inputEdit->setMaxHeight(v.toInt());
 208 }
 209
 210
 211 void InputWidget::setScrollBarsEnabled(const QVariant &v)
 212 {
 213     ui.inputEdit->setScrollBarsEnabled(v.toBool());
 214 }
 215
 216
 217 void InputWidget::setLineWrapEnabled(const QVariant &v)
 218 {
 219     ui.inputEdit->setLineWrapEnabled(v.toBool());
 220 }
 221
 222
 223 void InputWidget::setMultiLineEnabled(const QVariant &v)
 224 {
 225     ui.inputEdit->setMode(v.toBool() ? MultiLineEdit::MultiLine : MultiLineEdit::SingleLine);
 226 }
 227
 228
 229 bool InputWidget::eventFilter(QObject *watched, QEvent *event)
 230 {
 231     if (event->type() != QEvent::KeyPress)
 232         return false;
 233
 234     QKeyEvent *keyEvent = static_cast<QKeyEvent *>(event);
 235
 236     // keys from BufferView should be sent to (and focus) the input line
 237     BufferView *view = qobject_cast<BufferView *>(watched);
 238     if (view) {
 239         if (keyEvent->text().length() == 1 && !(keyEvent->modifiers() & (Qt::ControlModifier ^ Qt::AltModifier))) { // normal key press
 240             QChar c = keyEvent->text().at(0);
 241             if (c.isLetterOrNumber() || c.isSpace() || c.isPunct() || c.isSymbol()) {
 242                 setFocus();
 243                 QCoreApplication::sendEvent(inputLine(), keyEvent);
 244                 return true;
 245             }
 246         }
 247         return false;
 248     }
 249     else if (watched == ui.inputEdit) {
 250         if (keyEvent->matches(QKeySequence::Find)) {
 251             QAction *act = GraphicalUi::actionCollection()->action("ToggleSearchBar");
 252             if (act) {
 253                 act->toggle();
 254                 return true;
 255             }
 256         }
 257         return false;
 258     }
 259     return false;
 260 }
 261
 262
 263 void InputWidget::currentChanged(const QModelIndex &current, const QModelIndex &previous)
 264 {
 265     BufferId currentBufferId = current.data(NetworkModel::BufferIdRole).value<BufferId>();
 266     BufferId previousBufferId = previous.data(NetworkModel::BufferIdRole).value<BufferId>();
 267
 268     if (_perChatHistory) {
 269         //backup
 270         historyMap[previousBufferId].history = inputLine()->history();
 271         historyMap[previousBufferId].tempHistory = inputLine()->tempHistory();
 272         historyMap[previousBufferId].idx = inputLine()->idx();
 273         historyMap[previousBufferId].inputLine = inputLine()->html();
 274
 275         //restore
 276         inputLine()->setHistory(historyMap[currentBufferId].history);
 277         inputLine()->setTempHistory(historyMap[currentBufferId].tempHistory);
 278         inputLine()->setIdx(historyMap[currentBufferId].idx);
 279         inputLine()->setHtml(historyMap[currentBufferId].inputLine);
 280         inputLine()->moveCursor(QTextCursor::End, QTextCursor::MoveAnchor);
 281
 282         // FIXME this really should be in MultiLineEdit (and the const int on top removed)
 283         QTextBlockFormat format = inputLine()->textCursor().blockFormat();
 284         format.setLeftMargin(leftMargin); // we want a little space between the frame and the contents
 285         inputLine()->textCursor().setBlockFormat(format);
 286     }
 287
 288     NetworkId networkId = current.data(NetworkModel::NetworkIdRole).value<NetworkId>();
 289     if (networkId == _networkId)
 290         return;
 291
 292     setNetwork(networkId);
 293     updateNickSelector();
 294     updateEnabledState();
 295 }
 296
 297
 298 void InputWidget::dataChanged(const QModelIndex &topLeft, const QModelIndex &bottomRight)
 299 {
 300     QItemSelectionRange changedArea(topLeft, bottomRight);
 301     if (changedArea.contains(selectionModel()->currentIndex())) {
 302         updateEnabledState();
 303
 304         bool encrypted = false;
 305
 306         IrcChannel *chan = qobject_cast<IrcChannel *>(Client::bufferModel()->data(selectionModel()->currentIndex(), NetworkModel::IrcChannelRole).value<QObject *>());
 307         if (chan)
 308             encrypted = chan->encrypted();
 309
 310         IrcUser *user = qobject_cast<IrcUser *>(Client::bufferModel()->data(selectionModel()->currentIndex(), NetworkModel::IrcUserRole).value<QObject *>());
 311         if (user)
 312             encrypted = user->encrypted();
 313
 314         if (encrypted)
 315             ui.encryptionIconLabel->show();
 316         else
 317             ui.encryptionIconLabel->hide();
 318     }
 319 }
 320
 321
 322 void InputWidget::rowsAboutToBeRemoved(const QModelIndex &parent, int start, int end)
 323 {
 324     NetworkId networkId;
 325     QModelIndex child;
 326     for (int row = start; row <= end; row++) {
 327         child = model()->index(row, 0, parent);
 328         if (NetworkModel::NetworkItemType != child.data(NetworkModel::ItemTypeRole).toInt())
 329             continue;
 330         networkId = child.data(NetworkModel::NetworkIdRole).value<NetworkId>();
 331         if (networkId == _networkId) {
 332             setNetwork(0);
 333             updateNickSelector();
 334             return;
 335         }
 336     }
 337 }
 338
 339
 340 void InputWidget::updateEnabledState()
 341 {
 342 // FIXME: Find a visualization for this that does not disable the widget!
 343 //        Disabling kills global action shortcuts, plus users sometimes need/want to enter text
 344 //        even in inactive channels.
 345 #if 0
 346     QModelIndex currentIndex = selectionModel()->currentIndex();
 347
 348     const Network *net = Client::networkModel()->networkByIndex(currentIndex);
 349     bool enabled = false;
 350     if (net) {
 351         // disable inputline if it's a channelbuffer we parted from or...
 352         enabled = (currentIndex.data(NetworkModel::ItemActiveRole).value<bool>() || (currentIndex.data(NetworkModel::BufferTypeRole).toInt() != BufferInfo::ChannelBuffer));
 353         // ... if we're not connected to the network at all
 354         enabled &= net->isConnected();
 355     }
 356
 357     ui.inputEdit->setEnabled(enabled);
 358 #endif
 359 }
 360
 361
 362 const Network *InputWidget::currentNetwork() const
 363 {
 364     return Client::network(_networkId);
 365 }
 366
 367
 368 BufferInfo InputWidget::currentBufferInfo() const
 369 {
 370     return selectionModel()->currentIndex().data(NetworkModel::BufferInfoRole).value<BufferInfo>();
 371 };
 372
 373 void InputWidget::setNetwork(NetworkId networkId)
 374 {
 375     if (_networkId == networkId)
 376         return;
 377
 378     const Network *previousNet = Client::network(_networkId);
 379     if (previousNet) {
 380         disconnect(previousNet, 0, this, 0);
 381         if (previousNet->me())
 382             disconnect(previousNet->me(), 0, this, 0);
 383     }
 384
 385     _networkId = networkId;
 386
 387     const Network *network = Client::network(networkId);
 388     if (network) {
 389         connect(network, SIGNAL(identitySet(IdentityId)), this, SLOT(setIdentity(IdentityId)));
 390         connectMyIrcUser();
 391         setIdentity(network->identity());
 392     }
 393     else {
 394         setIdentity(0);
 395         _networkId = 0;
 396     }
 397 }
 398
 399
 400 void InputWidget::connectMyIrcUser()
 401 {
 402     const Network *network = currentNetwork();
 403     if (network->me()) {
 404         connect(network->me(), SIGNAL(nickSet(const QString &)), this, SLOT(updateNickSelector()));
 405         connect(network->me(), SIGNAL(userModesSet(QString)), this, SLOT(updateNickSelector()));
 406         connect(network->me(), SIGNAL(userModesAdded(QString)), this, SLOT(updateNickSelector()));
 407         connect(network->me(), SIGNAL(userModesRemoved(QString)), this, SLOT(updateNickSelector()));
 408         connect(network->me(), SIGNAL(awaySet(bool)), this, SLOT(updateNickSelector()));
 409         disconnect(network, SIGNAL(myNickSet(const QString &)), this, SLOT(connectMyIrcUser()));
 410         updateNickSelector();
 411     }
 412     else {
 413         connect(network, SIGNAL(myNickSet(const QString &)), this, SLOT(connectMyIrcUser()));
 414     }
 415 }
 416
 417
 418 void InputWidget::setIdentity(IdentityId identityId)
 419 {
 420     if (_identityId == identityId)
 421         return;
 422
 423     const Identity *previousIdentity = Client::identity(_identityId);
 424     if (previousIdentity)
 425         disconnect(previousIdentity, 0, this, 0);
 426
 427     _identityId = identityId;
 428
 429     const Identity *identity = Client::identity(identityId);
 430     if (identity) {
 431         connect(identity, SIGNAL(nicksSet(QStringList)), this, SLOT(updateNickSelector()));
 432     }
 433     else {
 434         _identityId = 0;
 435     }
 436     updateNickSelector();
 437 }
 438
 439
 440 void InputWidget::updateNickSelector() const
 441 {
 442     ui.ownNick->clear();
 443
 444     const Network *net = currentNetwork();
 445     if (!net)
 446         return;
 447
 448     const Identity *identity = Client::identity(net->identity());
 449     if (!identity) {
 450         qWarning() << "InputWidget::updateNickSelector(): can't find Identity for Network" << net->networkId() << "IdentityId:" << net->identity();
 451         return;
 452     }
 453
 454     int nickIdx;
 455     QStringList nicks = identity->nicks();
 456     if ((nickIdx = nicks.indexOf(net->myNick())) == -1) {
 457         nicks.prepend(net->myNick());
 458         nickIdx = 0;
 459     }
 460
 461     if (nicks.isEmpty())
 462         return;
 463
 464     IrcUser *me = net->me();
 465     if (me) {
 466         nicks[nickIdx] = net->myNick();
 467         if (!me->userModes().isEmpty())
 468             nicks[nickIdx] += QString(" (+%1)").arg(me->userModes());
 469     }
 470
 471     ui.ownNick->addItems(nicks);
 472
 473     if (me && me->isAway())
 474         ui.ownNick->setItemData(nickIdx, QIcon::fromTheme("user-away"), Qt::DecorationRole);
 475
 476     ui.ownNick->setCurrentIndex(nickIdx);
 477 }
 478
 479
 480 void InputWidget::changeNick(const QString &newNick) const
 481 {
 482     const Network *net = currentNetwork();
 483     if (!net || net->isMyNick(newNick))
 484         return;
 485
 486     // we reset the nick selecter as we have no confirmation yet, that this will succeed.
 487     // if the action succeeds it will be properly updated anyways.
 488     updateNickSelector();
 489     Client::userInput(BufferInfo::fakeStatusBuffer(net->networkId()), QString("/NICK %1").arg(newNick));
 490 }
 491
 492
 493 void InputWidget::onTextEntered(const QString &text)
 494 {
 495     Client::userInput(currentBufferInfo(), text);
 496     ui.boldButton->setChecked(false);
 497     ui.underlineButton->setChecked(false);
 498     ui.italicButton->setChecked(false);
 499
 500     QTextCharFormat fmt;
 501     fmt.setFontWeight(QFont::Normal);
 502     fmt.setFontUnderline(false);
 503     fmt.setFontItalic(false);
 504     fmt.clearForeground();
 505     fmt.clearBackground();
 506     inputLine()->setCurrentCharFormat(fmt);
 507
 508 #ifdef HAVE_KDE
 509     // Set highlighter back to active in case it was deactivated by too many errors.
 510     if (ui.inputEdit->highlighter())
 511         ui.inputEdit->highlighter()->setActive(true);
 512 #endif
 513 }
 514
 515
 516 void InputWidget::mergeFormatOnSelection(const QTextCharFormat &format)
 517 {
 518     QTextCursor cursor = inputLine()->textCursor();
 519     cursor.mergeCharFormat(format);
 520     inputLine()->mergeCurrentCharFormat(format);
 521 }
 522
 523
 524 void InputWidget::setFormatOnSelection(const QTextCharFormat &format)
 525 {
 526     QTextCursor cursor = inputLine()->textCursor();
 527     cursor.setCharFormat(format);
 528     inputLine()->setCurrentCharFormat(format);
 529 }
 530
 531
 532 QTextCharFormat InputWidget::getFormatOfWordOrSelection()
 533 {
 534     QTextCursor cursor = inputLine()->textCursor();
 535     return cursor.charFormat();
 536 }
 537
 538
 539 void InputWidget::currentCharFormatChanged(const QTextCharFormat &format)
 540 {
 541     fontChanged(format.font());
 542 }
 543
 544
 545 void InputWidget::on_boldButton_clicked(bool checked)
 546 {
 547     QTextCharFormat fmt;
 548     fmt.setFontWeight(checked ? QFont::Bold : QFont::Normal);
 549     mergeFormatOnSelection(fmt);
 550 }
 551
 552
 553 void InputWidget::on_underlineButton_clicked(bool checked)
 554 {
 555     QTextCharFormat fmt;
 556     fmt.setFontUnderline(checked);
 557     mergeFormatOnSelection(fmt);
 558 }
 559
 560
 561 void InputWidget::on_italicButton_clicked(bool checked)
 562 {
 563     QTextCharFormat fmt;
 564     fmt.setFontItalic(checked);
 565     mergeFormatOnSelection(fmt);
 566 }
 567
 568
 569 void InputWidget::fontChanged(const QFont &f)
 570 {
 571     ui.boldButton->setChecked(f.bold());
 572     ui.italicButton->setChecked(f.italic());
 573     ui.underlineButton->setChecked(f.underline());
 574 }
 575
 576
 577 void InputWidget::colorChosen(QAction *action)
 578 {
 579     QTextCharFormat fmt;
 580     QColor color;
 581     if (action->data().value<QString>() == "") {
 582         color = Qt::transparent;
 583         fmt = getFormatOfWordOrSelection();
 584         fmt.clearForeground();
 585         setFormatOnSelection(fmt);
 586     }
 587     else {
 588         color = QColor(inputLine()->rgbColorFromMirc(action->data().value<QString>()));
 589         fmt.setForeground(color);
 590         mergeFormatOnSelection(fmt);
 591     }
 592     ui.textcolorButton->setDefaultAction(action);
 593     ui.textcolorButton->setIcon(createColorToolButtonIcon(QIcon::fromTheme("format-text-color"), color));
 594 }
 595
 596
 597 void InputWidget::colorHighlightChosen(QAction *action)
 598 {
 599     QTextCharFormat fmt;
 600     QColor color;
 601     if (action->data().value<QString>() == "") {
 602         color = Qt::transparent;
 603         fmt = getFormatOfWordOrSelection();
 604         fmt.clearBackground();
 605         setFormatOnSelection(fmt);
 606     }
 607     else {
 608         color = QColor(inputLine()->rgbColorFromMirc(action->data().value<QString>()));
 609         fmt.setBackground(color);
 610         mergeFormatOnSelection(fmt);
 611     }
 612     ui.highlightcolorButton->setDefaultAction(action);
 613     ui.highlightcolorButton->setIcon(createColorToolButtonIcon(QIcon::fromTheme("format-fill-color"), color));
 614 }
 615
 616
 617 void InputWidget::on_showStyleButton_toggled(bool checked)
 618 {
 619     ui.styleFrame->setVisible(checked);
 620     if (checked) {
 621         ui.showStyleButton->setArrowType(Qt::LeftArrow);
 622     }
 623     else {
 624         ui.showStyleButton->setArrowType(Qt::RightArrow);
 625     }
 626 }
 627
 628
 629 QIcon InputWidget::createColorToolButtonIcon(const QIcon &icon, const QColor &color)
 630 {
 631     QPixmap pixmap(16, 16);
 632     pixmap.fill(Qt::transparent);
 633     QPainter painter(&pixmap);
 634     QPixmap image = icon.pixmap(16, 16);
 635     QRect target(0, 0, 16, 14);
 636     QRect source(0, 0, 16, 14);
 637     painter.fillRect(QRect(0, 14, 16, 16), color);
 638     painter.drawPixmap(target, image, source);
 639
 640     return QIcon(pixmap);
 641 }
 642
 643
 644 // MOUSE WHEEL FILTER
 645 MouseWheelFilter::MouseWheelFilter(QObject *parent)
 646     : QObject(parent)
 647 {
 648 }
 649
 650
 651 bool MouseWheelFilter::eventFilter(QObject *obj, QEvent *event)
 652 {
 653     if (event->type() != QEvent::Wheel)
 654         return QObject::eventFilter(obj, event);
 655     else
 656         return true;
 657 }