0
+ − 1 /****************************************************************************
+ − 2 **
+ − 3 ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+ − 4 ** All rights reserved.
+ − 5 ** Contact: Nokia Corporation (qt-info@nokia.com)
+ − 6 **
+ − 7 ** This file is part of the QtGui module of the Qt Toolkit.
+ − 8 **
+ − 9 ** $QT_BEGIN_LICENSE:LGPL$
+ − 10 ** No Commercial Usage
+ − 11 ** This file contains pre-release code and may not be distributed.
+ − 12 ** You may use this file in accordance with the terms and conditions
+ − 13 ** contained in the Technology Preview License Agreement accompanying
+ − 14 ** this package.
+ − 15 **
+ − 16 ** GNU Lesser General Public License Usage
+ − 17 ** Alternatively, this file may be used under the terms of the GNU Lesser
+ − 18 ** General Public License version 2.1 as published by the Free Software
+ − 19 ** Foundation and appearing in the file LICENSE.LGPL included in the
+ − 20 ** packaging of this file. Please review the following information to
+ − 21 ** ensure the GNU Lesser General Public License version 2.1 requirements
+ − 22 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+ − 23 **
+ − 24 ** In addition, as a special exception, Nokia gives you certain additional
+ − 25 ** rights. These rights are described in the Nokia Qt LGPL Exception
+ − 26 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+ − 27 **
+ − 28 ** If you have questions regarding the use of this file, please contact
+ − 29 ** Nokia at qt-info@nokia.com.
+ − 30 **
+ − 31 **
+ − 32 **
+ − 33 **
+ − 34 **
+ − 35 **
+ − 36 **
+ − 37 **
+ − 38 ** $QT_END_LICENSE$
+ − 39 **
+ − 40 ****************************************************************************/
+ − 41
+ − 42 #include "qcombobox.h"
+ − 43
+ − 44 #ifndef QT_NO_COMBOBOX
+ − 45 #include <qstylepainter.h>
+ − 46 #include <qlineedit.h>
+ − 47 #include <qapplication.h>
+ − 48 #include <qdesktopwidget.h>
+ − 49 #include <qlistview.h>
+ − 50 #include <qtableview.h>
+ − 51 #include <qitemdelegate.h>
+ − 52 #include <qmap.h>
+ − 53 #include <qmenu.h>
+ − 54 #include <qevent.h>
+ − 55 #include <qlayout.h>
+ − 56 #include <qscrollbar.h>
+ − 57 #include <qtreeview.h>
+ − 58 #include <qheaderview.h>
+ − 59 #ifndef QT_NO_IM
+ − 60 #include "qinputcontext.h"
+ − 61 #endif
+ − 62 #include <private/qapplication_p.h>
+ − 63 #include <private/qcombobox_p.h>
+ − 64 #include <private/qabstractitemmodel_p.h>
+ − 65 #include <private/qabstractscrollarea_p.h>
+ − 66 #include <private/qsoftkeymanager_p.h>
+ − 67 #include <qdebug.h>
+ − 68 #ifdef Q_WS_X11
+ − 69 #include <private/qt_x11_p.h>
+ − 70 #endif
+ − 71 #if defined(Q_WS_MAC) && !defined(QT_NO_EFFECTS) && !defined(QT_NO_STYLE_MAC)
+ − 72 #include <private/qcore_mac_p.h>
+ − 73 #include <QMacStyle>
+ − 74 #include <private/qt_cocoa_helpers_mac_p.h>
+ − 75 #endif
+ − 76 #ifndef QT_NO_EFFECTS
+ − 77 # include <private/qeffects_p.h>
+ − 78 #endif
+ − 79 QT_BEGIN_NAMESPACE
+ − 80
+ − 81 QComboBoxPrivate::QComboBoxPrivate()
+ − 82 : QWidgetPrivate(),
+ − 83 model(0),
+ − 84 lineEdit(0),
+ − 85 container(0),
+ − 86 insertPolicy(QComboBox::InsertAtBottom),
+ − 87 sizeAdjustPolicy(QComboBox::AdjustToContentsOnFirstShow),
+ − 88 minimumContentsLength(0),
+ − 89 shownOnce(false),
+ − 90 autoCompletion(true),
+ − 91 duplicatesEnabled(false),
+ − 92 frame(true),
+ − 93 maxVisibleItems(10),
+ − 94 maxCount(INT_MAX),
+ − 95 modelColumn(0),
+ − 96 inserting(false),
+ − 97 arrowState(QStyle::State_None),
+ − 98 hoverControl(QStyle::SC_None),
+ − 99 autoCompletionCaseSensitivity(Qt::CaseInsensitive),
+ − 100 indexBeforeChange(-1)
+ − 101 #ifndef QT_NO_COMPLETER
+ − 102 , completer(0)
+ − 103 #endif
+ − 104 {
+ − 105 }
+ − 106
+ − 107 QStyleOptionMenuItem QComboMenuDelegate::getStyleOption(const QStyleOptionViewItem &option,
+ − 108 const QModelIndex &index) const
+ − 109 {
+ − 110 QStyleOptionMenuItem menuOption;
+ − 111 menuOption.palette = option.palette.resolve(QApplication::palette("QMenu"));
+ − 112 menuOption.state = QStyle::State_None;
+ − 113 if (mCombo->window()->isActiveWindow())
+ − 114 menuOption.state = QStyle::State_Active;
+ − 115 if ((option.state & QStyle::State_Enabled) && (index.model()->flags(index) & Qt::ItemIsEnabled))
+ − 116 menuOption.state |= QStyle::State_Enabled;
+ − 117 else
+ − 118 menuOption.palette.setCurrentColorGroup(QPalette::Disabled);
+ − 119 if (option.state & QStyle::State_Selected)
+ − 120 menuOption.state |= QStyle::State_Selected;
+ − 121 menuOption.checkType = QStyleOptionMenuItem::NonExclusive;
+ − 122 menuOption.checked = mCombo->currentIndex() == index.row();
+ − 123 if (QComboBoxDelegate::isSeparator(index))
+ − 124 menuOption.menuItemType = QStyleOptionMenuItem::Separator;
+ − 125 else
+ − 126 menuOption.menuItemType = QStyleOptionMenuItem::Normal;
+ − 127
+ − 128 QVariant variant = index.model()->data(index, Qt::DecorationRole);
+ − 129 switch (variant.type()) {
+ − 130 case QVariant::Icon:
+ − 131 menuOption.icon = qvariant_cast<QIcon>(variant);
+ − 132 break;
+ − 133 case QVariant::Color: {
+ − 134 static QPixmap pixmap(option.decorationSize);
+ − 135 pixmap.fill(qvariant_cast<QColor>(variant));
+ − 136 menuOption.icon = pixmap;
+ − 137 break; }
+ − 138 default:
+ − 139 menuOption.icon = qvariant_cast<QPixmap>(variant);
+ − 140 break;
+ − 141 }
+ − 142
+ − 143 menuOption.text = index.model()->data(index, Qt::DisplayRole).toString()
+ − 144 .replace(QLatin1Char('&'), QLatin1String("&&"));
+ − 145 menuOption.tabWidth = 0;
+ − 146 menuOption.maxIconWidth = option.decorationSize.width() + 4;
+ − 147 menuOption.menuRect = option.rect;
+ − 148 menuOption.rect = option.rect;
+ − 149
+ − 150 // Make sure fonts set on the combo box also overrides the font for the popup menu.
+ − 151 if (mCombo->testAttribute(Qt::WA_SetFont)
+ − 152 || mCombo->testAttribute(Qt::WA_MacSmallSize)
+ − 153 || mCombo->testAttribute(Qt::WA_MacMiniSize)
+ − 154 || mCombo->font() != qt_app_fonts_hash()->value("QComboBox", QFont()))
+ − 155 menuOption.font = mCombo->font();
+ − 156 else
+ − 157 menuOption.font = qt_app_fonts_hash()->value("QComboMenuItem", mCombo->font());
+ − 158
+ − 159 menuOption.fontMetrics = QFontMetrics(menuOption.font);
+ − 160
+ − 161 return menuOption;
+ − 162 }
+ − 163
+ − 164 #ifdef QT_KEYPAD_NAVIGATION
+ − 165 void QComboBoxPrivate::_q_completerActivated()
+ − 166 {
+ − 167 Q_Q(QComboBox);
+ − 168 if ( QApplication::keypadNavigationEnabled()
+ − 169 && q->isEditable()
+ − 170 && q->completer()
+ − 171 && q->completer()->completionMode() == QCompleter::UnfilteredPopupCompletion ) {
+ − 172 q->setEditFocus(false);
+ − 173 }
+ − 174 }
+ − 175 #endif
+ − 176
+ − 177 void QComboBoxPrivate::updateArrow(QStyle::StateFlag state)
+ − 178 {
+ − 179 Q_Q(QComboBox);
+ − 180 if (arrowState == state)
+ − 181 return;
+ − 182 arrowState = state;
+ − 183 QStyleOptionComboBox opt;
+ − 184 q->initStyleOption(&opt);
+ − 185 q->update(q->style()->subControlRect(QStyle::CC_ComboBox, &opt, QStyle::SC_ComboBoxArrow, q));
+ − 186 }
+ − 187
+ − 188 void QComboBoxPrivate::_q_modelReset()
+ − 189 {
+ − 190 Q_Q(QComboBox);
+ − 191 if (lineEdit) {
+ − 192 lineEdit->setText(QString());
+ − 193 updateLineEditGeometry();
+ − 194 }
+ − 195 q->update();
+ − 196 }
+ − 197
+ − 198 void QComboBoxPrivate::_q_modelDestroyed()
+ − 199 {
+ − 200 model = QAbstractItemModelPrivate::staticEmptyModel();
+ − 201 }
+ − 202
+ − 203
+ − 204 //Windows and KDE allows menus to cover the taskbar, while GNOME and Mac don't
+ − 205 QRect QComboBoxPrivate::popupGeometry(int screen) const
+ − 206 {
+ − 207 #ifdef Q_WS_WIN
+ − 208 return QApplication::desktop()->screenGeometry(screen);
+ − 209 #elif defined Q_WS_X11
+ − 210 if (X11->desktopEnvironment == DE_KDE)
+ − 211 return QApplication::desktop()->screenGeometry(screen);
+ − 212 else
+ − 213 return QApplication::desktop()->availableGeometry(screen);
+ − 214 #else
+ − 215 return QApplication::desktop()->availableGeometry(screen);
+ − 216 #endif
+ − 217 }
+ − 218
+ − 219 bool QComboBoxPrivate::updateHoverControl(const QPoint &pos)
+ − 220 {
+ − 221
+ − 222 Q_Q(QComboBox);
+ − 223 QRect lastHoverRect = hoverRect;
+ − 224 QStyle::SubControl lastHoverControl = hoverControl;
+ − 225 bool doesHover = q->testAttribute(Qt::WA_Hover);
+ − 226 if (lastHoverControl != newHoverControl(pos) && doesHover) {
+ − 227 q->update(lastHoverRect);
+ − 228 q->update(hoverRect);
+ − 229 return true;
+ − 230 }
+ − 231 return !doesHover;
+ − 232 }
+ − 233
+ − 234 QStyle::SubControl QComboBoxPrivate::newHoverControl(const QPoint &pos)
+ − 235 {
+ − 236 Q_Q(QComboBox);
+ − 237 QStyleOptionComboBox opt;
+ − 238 q->initStyleOption(&opt);
+ − 239 opt.subControls = QStyle::SC_All;
+ − 240 hoverControl = q->style()->hitTestComplexControl(QStyle::CC_ComboBox, &opt, pos, q);
+ − 241 hoverRect = (hoverControl != QStyle::SC_None)
+ − 242 ? q->style()->subControlRect(QStyle::CC_ComboBox, &opt, hoverControl, q)
+ − 243 : QRect();
+ − 244 return hoverControl;
+ − 245 }
+ − 246
+ − 247 /*
+ − 248 Computes a size hint based on the maximum width
+ − 249 for the items in the combobox.
+ − 250 */
+ − 251 int QComboBoxPrivate::computeWidthHint() const
+ − 252 {
+ − 253 Q_Q(const QComboBox);
+ − 254
+ − 255 int width = 0;
+ − 256 const int count = q->count();
+ − 257 const int iconWidth = q->iconSize().width() + 4;
+ − 258 const QFontMetrics &fontMetrics = q->fontMetrics();
+ − 259
+ − 260 for (int i = 0; i < count; ++i) {
+ − 261 const int textWidth = fontMetrics.width(q->itemText(i));
+ − 262 if (q->itemIcon(i).isNull())
+ − 263 width = (qMax(width, textWidth));
+ − 264 else
+ − 265 width = (qMax(width, textWidth + iconWidth));
+ − 266 }
+ − 267
+ − 268 QStyleOptionComboBox opt;
+ − 269 q->initStyleOption(&opt);
+ − 270 QSize tmp(width, 0);
+ − 271 tmp = q->style()->sizeFromContents(QStyle::CT_ComboBox, &opt, tmp, q);
+ − 272 return tmp.width();
+ − 273 }
+ − 274
+ − 275 QSize QComboBoxPrivate::recomputeSizeHint(QSize &sh) const
+ − 276 {
+ − 277 Q_Q(const QComboBox);
+ − 278 if (!sh.isValid()) {
+ − 279 bool hasIcon = sizeAdjustPolicy == QComboBox::AdjustToMinimumContentsLengthWithIcon ? true : false;
+ − 280 int count = q->count();
+ − 281 QSize iconSize = q->iconSize();
+ − 282 const QFontMetrics &fm = q->fontMetrics();
+ − 283
+ − 284 // text width
+ − 285 if (&sh == &sizeHint || minimumContentsLength == 0) {
+ − 286 switch (sizeAdjustPolicy) {
+ − 287 case QComboBox::AdjustToContents:
+ − 288 case QComboBox::AdjustToContentsOnFirstShow:
+ − 289 if (count == 0) {
+ − 290 sh.rwidth() = 7 * fm.width(QLatin1Char('x'));
+ − 291 } else {
+ − 292 for (int i = 0; i < count; ++i) {
+ − 293 if (!q->itemIcon(i).isNull()) {
+ − 294 hasIcon = true;
+ − 295 sh.setWidth(qMax(sh.width(), fm.boundingRect(q->itemText(i)).width() + iconSize.width() + 4));
+ − 296 } else {
+ − 297 sh.setWidth(qMax(sh.width(), fm.boundingRect(q->itemText(i)).width()));
+ − 298 }
+ − 299 }
+ − 300 }
+ − 301 break;
+ − 302 case QComboBox::AdjustToMinimumContentsLength:
+ − 303 for (int i = 0; i < count && !hasIcon; ++i)
+ − 304 hasIcon = !q->itemIcon(i).isNull();
+ − 305 default:
+ − 306 ;
+ − 307 }
+ − 308 } else {
+ − 309 for (int i = 0; i < count && !hasIcon; ++i)
+ − 310 hasIcon = !q->itemIcon(i).isNull();
+ − 311 }
+ − 312 if (minimumContentsLength > 0)
+ − 313 sh.setWidth(qMax(sh.width(), minimumContentsLength * fm.width(QLatin1Char('X')) + (hasIcon ? iconSize.width() + 4 : 0)));
+ − 314
+ − 315
+ − 316 // height
+ − 317 sh.setHeight(qMax(fm.lineSpacing(), 14) + 2);
+ − 318 if (hasIcon) {
+ − 319 sh.setHeight(qMax(sh.height(), iconSize.height() + 2));
+ − 320 }
+ − 321
+ − 322 // add style and strut values
+ − 323 QStyleOptionComboBox opt;
+ − 324 q->initStyleOption(&opt);
+ − 325 sh = q->style()->sizeFromContents(QStyle::CT_ComboBox, &opt, sh, q);
+ − 326 }
+ − 327 return sh.expandedTo(QApplication::globalStrut());
+ − 328 }
+ − 329
+ − 330 void QComboBoxPrivate::adjustComboBoxSize()
+ − 331 {
+ − 332 viewContainer()->adjustSizeTimer.start(20, container);
+ − 333 }
+ − 334
+ − 335 void QComboBoxPrivate::updateLayoutDirection()
+ − 336 {
+ − 337 Q_Q(const QComboBox);
+ − 338 QStyleOptionComboBox opt;
+ − 339 q->initStyleOption(&opt);
+ − 340 Qt::LayoutDirection dir = Qt::LayoutDirection(
+ − 341 q->style()->styleHint(QStyle::SH_ComboBox_LayoutDirection, &opt, q));
+ − 342 if (lineEdit)
+ − 343 lineEdit->setLayoutDirection(dir);
+ − 344 if (container)
+ − 345 container->setLayoutDirection(dir);
+ − 346 }
+ − 347
+ − 348
+ − 349 void QComboBoxPrivateContainer::timerEvent(QTimerEvent *timerEvent)
+ − 350 {
+ − 351 if (timerEvent->timerId() == adjustSizeTimer.timerId()) {
+ − 352 adjustSizeTimer.stop();
+ − 353 if (combo->sizeAdjustPolicy() == QComboBox::AdjustToContents) {
+ − 354 combo->adjustSize();
+ − 355 combo->update();
+ − 356 }
+ − 357 }
+ − 358 }
+ − 359
+ − 360 void QComboBoxPrivateContainer::resizeEvent(QResizeEvent *e)
+ − 361 {
+ − 362 QStyleOptionComboBox opt = comboStyleOption();
+ − 363 if (combo->style()->styleHint(QStyle::SH_ComboBox_Popup, &opt, combo)) {
+ − 364 QStyleOption myOpt;
+ − 365 myOpt.initFrom(this);
+ − 366 QStyleHintReturnMask mask;
+ − 367 if (combo->style()->styleHint(QStyle::SH_Menu_Mask, &myOpt, this, &mask)) {
+ − 368 setMask(mask.region);
+ − 369 }
+ − 370 } else {
+ − 371 clearMask();
+ − 372 }
+ − 373 QFrame::resizeEvent(e);
+ − 374 }
+ − 375
+ − 376 void QComboBoxPrivateContainer::leaveEvent(QEvent *)
+ − 377 {
+ − 378 // On Mac using the Mac style we want to clear the selection
+ − 379 // when the mouse moves outside the popup.
+ − 380 #ifdef Q_WS_MAC
+ − 381 QStyleOptionComboBox opt = comboStyleOption();
+ − 382 if (combo->style()->styleHint(QStyle::SH_ComboBox_Popup, &opt, combo))
+ − 383 view->clearSelection();
+ − 384 #endif
+ − 385 }
+ − 386
+ − 387 QComboBoxPrivateContainer::QComboBoxPrivateContainer(QAbstractItemView *itemView, QComboBox *parent)
+ − 388 : QFrame(parent, Qt::Popup), combo(parent), view(0), top(0), bottom(0)
+ − 389 {
+ − 390 // we need the combobox and itemview
+ − 391 Q_ASSERT(parent);
+ − 392 Q_ASSERT(itemView);
+ − 393
+ − 394 setAttribute(Qt::WA_WindowPropagation);
+ − 395 setAttribute(Qt::WA_X11NetWmWindowTypeCombo);
+ − 396
+ − 397 // setup container
+ − 398 blockMouseReleaseTimer.setSingleShot(true);
+ − 399
+ − 400 // we need a vertical layout
+ − 401 QBoxLayout *layout = new QBoxLayout(QBoxLayout::TopToBottom, this);
+ − 402 layout->setSpacing(0);
+ − 403 layout->setMargin(0);
+ − 404
+ − 405 #ifdef QT_SOFTKEYS_ENABLED
+ − 406 selectAction = QSoftKeyManager::createKeyedAction(QSoftKeyManager::SelectSoftKey, Qt::Key_Select, this);
+ − 407 cancelAction = QSoftKeyManager::createKeyedAction(QSoftKeyManager::CancelSoftKey, Qt::Key_Escape, this);
+ − 408 addAction(selectAction);
+ − 409 addAction(cancelAction);
+ − 410 #endif
+ − 411
+ − 412 // set item view
+ − 413 setItemView(itemView);
+ − 414
+ − 415 // add scroller arrows if style needs them
+ − 416 QStyleOptionComboBox opt = comboStyleOption();
+ − 417 const bool usePopup = combo->style()->styleHint(QStyle::SH_ComboBox_Popup, &opt, combo);
+ − 418 if (usePopup) {
+ − 419 top = new QComboBoxPrivateScroller(QAbstractSlider::SliderSingleStepSub, this);
+ − 420 bottom = new QComboBoxPrivateScroller(QAbstractSlider::SliderSingleStepAdd, this);
+ − 421 top->hide();
+ − 422 bottom->hide();
+ − 423 } else {
+ − 424 setLineWidth(1);
+ − 425 }
+ − 426
+ − 427 setFrameStyle(combo->style()->styleHint(QStyle::SH_ComboBox_PopupFrameStyle, &opt, combo));
+ − 428
+ − 429 if (top) {
+ − 430 layout->insertWidget(0, top);
+ − 431 connect(top, SIGNAL(doScroll(int)), this, SLOT(scrollItemView(int)));
+ − 432 }
+ − 433 if (bottom) {
+ − 434 layout->addWidget(bottom);
+ − 435 connect(bottom, SIGNAL(doScroll(int)), this, SLOT(scrollItemView(int)));
+ − 436 }
+ − 437
+ − 438 // Some styles (Mac) have a margin at the top and bottom of the popup.
+ − 439 layout->insertSpacing(0, 0);
+ − 440 layout->addSpacing(0);
+ − 441 updateTopBottomMargin();
+ − 442 }
+ − 443
+ − 444 void QComboBoxPrivateContainer::scrollItemView(int action)
+ − 445 {
+ − 446 #ifndef QT_NO_SCROLLBAR
+ − 447 if (view->verticalScrollBar())
+ − 448 view->verticalScrollBar()->triggerAction(static_cast<QAbstractSlider::SliderAction>(action));
+ − 449 #endif
+ − 450 }
+ − 451
+ − 452 /*
+ − 453 Hides or shows the scrollers when we emulate a popupmenu
+ − 454 */
+ − 455 void QComboBoxPrivateContainer::updateScrollers()
+ − 456 {
+ − 457 #ifndef QT_NO_SCROLLBAR
+ − 458 if (!top || !bottom)
+ − 459 return;
+ − 460
+ − 461 if (isVisible() == false)
+ − 462 return;
+ − 463
+ − 464 QStyleOptionComboBox opt = comboStyleOption();
+ − 465 if (combo->style()->styleHint(QStyle::SH_ComboBox_Popup, &opt, combo) &&
+ − 466 view->verticalScrollBar()->minimum() < view->verticalScrollBar()->maximum()) {
+ − 467
+ − 468 bool needTop = view->verticalScrollBar()->value()
+ − 469 > (view->verticalScrollBar()->minimum() + spacing());
+ − 470 bool needBottom = view->verticalScrollBar()->value()
+ − 471 < (view->verticalScrollBar()->maximum() - spacing()*2);
+ − 472 if (needTop)
+ − 473 top->show();
+ − 474 else
+ − 475 top->hide();
+ − 476 if (needBottom)
+ − 477 bottom->show();
+ − 478 else
+ − 479 bottom->hide();
+ − 480 } else {
+ − 481 top->hide();
+ − 482 bottom->hide();
+ − 483 }
+ − 484 #endif // QT_NO_SCROLLBAR
+ − 485 }
+ − 486
+ − 487 /*
+ − 488 Cleans up when the view is destroyed.
+ − 489 */
+ − 490 void QComboBoxPrivateContainer::viewDestroyed()
+ − 491 {
+ − 492 view = 0;
+ − 493 setItemView(new QComboBoxListView());
+ − 494 }
+ − 495
+ − 496 /*
+ − 497 Sets currentIndex on entered if the LeftButton is not pressed. This
+ − 498 means that if mouseTracking(...) is on, we setCurrentIndex and select
+ − 499 even when LeftButton is not pressed.
+ − 500 */
+ − 501 void QComboBoxPrivateContainer::setCurrentIndex(const QModelIndex &index)
+ − 502 {
+ − 503 if (QComboBoxDelegate::isSeparator(index))
+ − 504 return;
+ − 505 view->setCurrentIndex(index);
+ − 506 }
+ − 507
+ − 508 /*
+ − 509 Returns the item view used for the combobox popup.
+ − 510 */
+ − 511 QAbstractItemView *QComboBoxPrivateContainer::itemView() const
+ − 512 {
+ − 513 return view;
+ − 514 }
+ − 515
+ − 516 /*!
+ − 517 Sets the item view to be used for the combobox popup.
+ − 518 */
+ − 519 void QComboBoxPrivateContainer::setItemView(QAbstractItemView *itemView)
+ − 520 {
+ − 521 Q_ASSERT(itemView);
+ − 522
+ − 523 // clean up old one
+ − 524 if (view) {
+ − 525 view->removeEventFilter(this);
+ − 526 view->viewport()->removeEventFilter(this);
+ − 527 #ifndef QT_NO_SCROLLBAR
+ − 528 disconnect(view->verticalScrollBar(), SIGNAL(valueChanged(int)),
+ − 529 this, SLOT(updateScrollers()));
+ − 530 disconnect(view->verticalScrollBar(), SIGNAL(rangeChanged(int,int)),
+ − 531 this, SLOT(updateScrollers()));
+ − 532 #endif
+ − 533 disconnect(view, SIGNAL(entered(QModelIndex)),
+ − 534 this, SLOT(setCurrentIndex(QModelIndex)));
+ − 535 disconnect(view, SIGNAL(destroyed()),
+ − 536 this, SLOT(viewDestroyed()));
+ − 537
+ − 538 delete view;
+ − 539 view = 0;
+ − 540 }
+ − 541
+ − 542 // setup the item view
+ − 543 view = itemView;
+ − 544 view->setParent(this);
+ − 545 view->setAttribute(Qt::WA_MacShowFocusRect, false);
+ − 546 qobject_cast<QBoxLayout*>(layout())->insertWidget(top ? 2 : 0, view);
+ − 547 view->setSizePolicy(QSizePolicy::Ignored, QSizePolicy::Ignored);
+ − 548 view->installEventFilter(this);
+ − 549 view->viewport()->installEventFilter(this);
+ − 550 view->setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
+ − 551 QStyleOptionComboBox opt = comboStyleOption();
+ − 552 const bool usePopup = combo->style()->styleHint(QStyle::SH_ComboBox_Popup, &opt, combo);
+ − 553 #ifndef QT_NO_SCROLLBAR
+ − 554 if (usePopup)
+ − 555 view->setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
+ − 556 #endif
+ − 557 if (combo->style()->styleHint(QStyle::SH_ComboBox_ListMouseTracking, &opt, combo) ||
+ − 558 usePopup) {
+ − 559 view->setMouseTracking(true);
+ − 560 }
+ − 561 view->setSelectionMode(QAbstractItemView::SingleSelection);
+ − 562 view->setFrameStyle(QFrame::NoFrame);
+ − 563 view->setLineWidth(0);
+ − 564 view->setEditTriggers(QAbstractItemView::NoEditTriggers);
+ − 565 #ifndef QT_NO_SCROLLBAR
+ − 566 connect(view->verticalScrollBar(), SIGNAL(valueChanged(int)),
+ − 567 this, SLOT(updateScrollers()));
+ − 568 connect(view->verticalScrollBar(), SIGNAL(rangeChanged(int,int)),
+ − 569 this, SLOT(updateScrollers()));
+ − 570 #endif
+ − 571 connect(view, SIGNAL(entered(QModelIndex)),
+ − 572 this, SLOT(setCurrentIndex(QModelIndex)));
+ − 573 connect(view, SIGNAL(destroyed()),
+ − 574 this, SLOT(viewDestroyed()));
+ − 575 }
+ − 576
+ − 577 /*!
+ − 578 Returns the spacing between the items in the view.
+ − 579 */
+ − 580 int QComboBoxPrivateContainer::spacing() const
+ − 581 {
+ − 582 QListView *lview = qobject_cast<QListView*>(view);
+ − 583 if (lview)
+ − 584 return lview->spacing();
+ − 585 #ifndef QT_NO_TABLEVIEW
+ − 586 QTableView *tview = qobject_cast<QTableView*>(view);
+ − 587 if (tview)
+ − 588 return tview->showGrid() ? 1 : 0;
+ − 589 #endif
+ − 590 return 0;
+ − 591 }
+ − 592
+ − 593 void QComboBoxPrivateContainer::updateTopBottomMargin()
+ − 594 {
+ − 595 if (!layout() || layout()->count() < 1)
+ − 596 return;
+ − 597
+ − 598 QBoxLayout *boxLayout = qobject_cast<QBoxLayout *>(layout());
+ − 599 if (!boxLayout)
+ − 600 return;
+ − 601
+ − 602 const QStyleOptionComboBox opt = comboStyleOption();
+ − 603 const bool usePopup = combo->style()->styleHint(QStyle::SH_ComboBox_Popup, &opt, combo);
+ − 604 const int margin = usePopup ? combo->style()->pixelMetric(QStyle::PM_MenuVMargin, &opt, combo) : 0;
+ − 605
+ − 606 QSpacerItem *topSpacer = boxLayout->itemAt(0)->spacerItem();
+ − 607 if (topSpacer)
+ − 608 topSpacer->changeSize(0, margin, QSizePolicy::Minimum, QSizePolicy::Fixed);
+ − 609
+ − 610 QSpacerItem *bottomSpacer = boxLayout->itemAt(boxLayout->count() - 1)->spacerItem();
+ − 611 if (bottomSpacer && bottomSpacer != topSpacer)
+ − 612 bottomSpacer->changeSize(0, margin, QSizePolicy::Minimum, QSizePolicy::Fixed);
+ − 613
+ − 614 boxLayout->invalidate();
+ − 615 }
+ − 616
+ − 617 void QComboBoxPrivateContainer::changeEvent(QEvent *e)
+ − 618 {
+ − 619 if (e->type() == QEvent::StyleChange) {
+ − 620 QStyleOptionComboBox opt = comboStyleOption();
+ − 621 view->setMouseTracking(combo->style()->styleHint(QStyle::SH_ComboBox_ListMouseTracking, &opt, combo) ||
+ − 622 combo->style()->styleHint(QStyle::SH_ComboBox_Popup, &opt, combo));
+ − 623 setFrameStyle(combo->style()->styleHint(QStyle::SH_ComboBox_PopupFrameStyle, &opt, combo));
+ − 624 }
+ − 625 QWidget::changeEvent(e);
+ − 626 }
+ − 627
+ − 628
+ − 629 bool QComboBoxPrivateContainer::eventFilter(QObject *o, QEvent *e)
+ − 630 {
+ − 631 switch (e->type()) {
+ − 632 case QEvent::ShortcutOverride:
+ − 633 switch (static_cast<QKeyEvent*>(e)->key()) {
+ − 634 case Qt::Key_Enter:
+ − 635 case Qt::Key_Return:
+ − 636 #ifdef QT_KEYPAD_NAVIGATION
+ − 637 case Qt::Key_Select:
+ − 638 #endif
+ − 639 if (view->currentIndex().isValid() && (view->currentIndex().flags() & Qt::ItemIsEnabled) ) {
+ − 640 combo->hidePopup();
+ − 641 emit itemSelected(view->currentIndex());
+ − 642 }
+ − 643 return true;
+ − 644 case Qt::Key_Down:
+ − 645 if (!(static_cast<QKeyEvent*>(e)->modifiers() & Qt::AltModifier))
+ − 646 break;
+ − 647 // fall through
+ − 648 case Qt::Key_F4:
+ − 649 case Qt::Key_Escape:
+ − 650 combo->hidePopup();
+ − 651 return true;
+ − 652 default:
+ − 653 break;
+ − 654 }
+ − 655 break;
+ − 656 case QEvent::MouseMove: {
+ − 657 if (isVisible()) {
+ − 658 QMouseEvent *m = static_cast<QMouseEvent *>(e);
+ − 659 QWidget *widget = static_cast<QWidget *>(o);
+ − 660 QPoint vector = widget->mapToGlobal(m->pos()) - initialClickPosition;
+ − 661 if (vector.manhattanLength() > 9 && blockMouseReleaseTimer.isActive())
+ − 662 blockMouseReleaseTimer.stop();
+ − 663 }
+ − 664 break;
+ − 665 }
+ − 666 case QEvent::MouseButtonRelease: {
+ − 667 QMouseEvent *m = static_cast<QMouseEvent *>(e);
+ − 668 if (isVisible() && view->rect().contains(m->pos()) && view->currentIndex().isValid()
+ − 669 && !blockMouseReleaseTimer.isActive()
+ − 670 && (view->currentIndex().flags() & Qt::ItemIsEnabled)
+ − 671 && (view->currentIndex().flags() & Qt::ItemIsSelectable)) {
+ − 672 combo->hidePopup();
+ − 673 emit itemSelected(view->currentIndex());
+ − 674 return true;
+ − 675 }
+ − 676 break;
+ − 677 }
+ − 678 default:
+ − 679 break;
+ − 680 }
+ − 681 return QFrame::eventFilter(o, e);
+ − 682 }
+ − 683
+ − 684 void QComboBoxPrivateContainer::showEvent(QShowEvent *)
+ − 685 {
+ − 686 combo->update();
+ − 687 }
+ − 688
+ − 689 void QComboBoxPrivateContainer::hideEvent(QHideEvent *)
+ − 690 {
+ − 691 emit resetButton();
+ − 692 combo->update();
+ − 693 }
+ − 694
+ − 695 void QComboBoxPrivateContainer::mousePressEvent(QMouseEvent *e)
+ − 696 {
+ − 697
+ − 698 QStyleOptionComboBox opt = comboStyleOption();
+ − 699 opt.subControls = QStyle::SC_All;
+ − 700 opt.activeSubControls = QStyle::SC_ComboBoxArrow;
+ − 701 QStyle::SubControl sc = combo->style()->hitTestComplexControl(QStyle::CC_ComboBox, &opt,
+ − 702 combo->mapFromGlobal(e->globalPos()),
+ − 703 combo);
+ − 704 if ((combo->isEditable() && sc == QStyle::SC_ComboBoxArrow)
+ − 705 || (!combo->isEditable() && sc != QStyle::SC_None))
+ − 706 setAttribute(Qt::WA_NoMouseReplay);
+ − 707 combo->hidePopup();
+ − 708 }
+ − 709
+ − 710 void QComboBoxPrivateContainer::mouseReleaseEvent(QMouseEvent *e)
+ − 711 {
+ − 712 Q_UNUSED(e);
+ − 713 if (!blockMouseReleaseTimer.isActive()){
+ − 714 combo->hidePopup();
+ − 715 emit resetButton();
+ − 716 }
+ − 717 }
+ − 718
+ − 719 QStyleOptionComboBox QComboBoxPrivateContainer::comboStyleOption() const
+ − 720 {
+ − 721 // ### This should use QComboBox's initStyleOption(), but it's protected
+ − 722 // perhaps, we could cheat by having the QCombo private instead?
+ − 723 QStyleOptionComboBox opt;
+ − 724 opt.initFrom(combo);
+ − 725 opt.subControls = QStyle::SC_All;
+ − 726 opt.activeSubControls = QStyle::SC_None;
+ − 727 opt.editable = combo->isEditable();
+ − 728 return opt;
+ − 729 }
+ − 730
+ − 731 /*!
+ − 732 \enum QComboBox::InsertPolicy
+ − 733
+ − 734 This enum specifies what the QComboBox should do when a new string is
+ − 735 entered by the user.
+ − 736
+ − 737 \value NoInsert The string will not be inserted into the combobox.
+ − 738 \value InsertAtTop The string will be inserted as the first item in the combobox.
+ − 739 \value InsertAtCurrent The current item will be \e replaced by the string.
+ − 740 \value InsertAtBottom The string will be inserted after the last item in the combobox.
+ − 741 \value InsertAfterCurrent The string is inserted after the current item in the combobox.
+ − 742 \value InsertBeforeCurrent The string is inserted before the current item in the combobox.
+ − 743 \value InsertAlphabetically The string is inserted in the alphabetic order in the combobox.
+ − 744 \omitvalue NoInsertion
+ − 745 \omitvalue AtTop
+ − 746 \omitvalue AtCurrent
+ − 747 \omitvalue AtBottom
+ − 748 \omitvalue AfterCurrent
+ − 749 \omitvalue BeforeCurrent
+ − 750 */
+ − 751
+ − 752 /*!
+ − 753 \enum QComboBox::SizeAdjustPolicy
+ − 754
+ − 755 This enum specifies how the size hint of the QComboBox should
+ − 756 adjust when new content is added or content changes.
+ − 757
+ − 758 \value AdjustToContents The combobox will always adjust to the contents
+ − 759 \value AdjustToContentsOnFirstShow The combobox will adjust to its contents the first time it is shown.
+ − 760 \value AdjustToMinimumContentsLength Use AdjustToContents or AdjustToContentsOnFirstShow instead.
+ − 761 \value AdjustToMinimumContentsLengthWithIcon The combobox will adjust to \l minimumContentsLength plus space for an icon. For performance reasons use this policy on large models.
+ − 762 */
+ − 763
+ − 764 /*!
+ − 765 \fn void QComboBox::activated(int index)
+ − 766
+ − 767 This signal is sent when the user chooses an item in the combobox.
+ − 768 The item's \a index is passed. Note that this signal is sent even
+ − 769 when the choice is not changed. If you need to know when the
+ − 770 choice actually changes, use signal currentIndexChanged().
+ − 771
+ − 772 */
+ − 773
+ − 774 /*!
+ − 775 \fn void QComboBox::activated(const QString &text)
+ − 776
+ − 777 This signal is sent when the user chooses an item in the combobox.
+ − 778 The item's \a text is passed. Note that this signal is sent even
+ − 779 when the choice is not changed. If you need to know when the
+ − 780 choice actually changes, use signal currentIndexChanged().
+ − 781
+ − 782 */
+ − 783
+ − 784 /*!
+ − 785 \fn void QComboBox::highlighted(int index)
+ − 786
+ − 787 This signal is sent when an item in the combobox popup list is
+ − 788 highlighted by the user. The item's \a index is passed.
+ − 789 */
+ − 790
+ − 791 /*!
+ − 792 \fn void QComboBox::highlighted(const QString &text)
+ − 793
+ − 794 This signal is sent when an item in the combobox popup list is
+ − 795 highlighted by the user. The item's \a text is passed.
+ − 796 */
+ − 797
+ − 798 /*!
+ − 799 \fn void QComboBox::currentIndexChanged(int index)
+ − 800 \since 4.1
+ − 801
+ − 802 This signal is sent whenever the currentIndex in the combobox
+ − 803 changes either through user interaction or programmatically. The
+ − 804 item's \a index is passed or -1 if the combobox becomes empty or the
+ − 805 currentIndex was reset.
+ − 806 */
+ − 807
+ − 808 /*!
+ − 809 \fn void QComboBox::currentIndexChanged(const QString &text)
+ − 810 \since 4.1
+ − 811
+ − 812 This signal is sent whenever the currentIndex in the combobox
+ − 813 changes either through user interaction or programmatically. The
+ − 814 item's \a text is passed.
+ − 815 */
+ − 816
+ − 817 /*!
+ − 818 Constructs a combobox with the given \a parent, using the default
+ − 819 model QStandardItemModel.
+ − 820 */
+ − 821 QComboBox::QComboBox(QWidget *parent)
+ − 822 : QWidget(*new QComboBoxPrivate(), parent, 0)
+ − 823 {
+ − 824 Q_D(QComboBox);
+ − 825 d->init();
+ − 826 }
+ − 827
+ − 828 /*!
+ − 829 \internal
+ − 830 */
+ − 831 QComboBox::QComboBox(QComboBoxPrivate &dd, QWidget *parent)
+ − 832 : QWidget(dd, parent, 0)
+ − 833 {
+ − 834 Q_D(QComboBox);
+ − 835 d->init();
+ − 836 }
+ − 837
+ − 838 #ifdef QT3_SUPPORT
+ − 839 /*!
+ − 840 Use one of the constructors that doesn't take the \a name
+ − 841 argument and then use setObjectName() instead.
+ − 842 */
+ − 843 QComboBox::QComboBox(QWidget *parent, const char *name)
+ − 844 : QWidget(*new QComboBoxPrivate(), parent, 0)
+ − 845 {
+ − 846 Q_D(QComboBox);
+ − 847 d->init();
+ − 848 setObjectName(QString::fromAscii(name));
+ − 849 }
+ − 850
+ − 851 /*!
+ − 852 Use one of the constructors that doesn't take the \a name
+ − 853 argument and then use setObjectName() instead.
+ − 854 */
+ − 855 QComboBox::QComboBox(bool rw, QWidget *parent, const char *name)
+ − 856 : QWidget(*new QComboBoxPrivate(), parent, 0)
+ − 857 {
+ − 858 Q_D(QComboBox);
+ − 859 d->init();
+ − 860 setEditable(rw);
+ − 861 setObjectName(QString::fromAscii(name));
+ − 862 }
+ − 863
+ − 864 #endif //QT3_SUPPORT
+ − 865
+ − 866 /*!
+ − 867 \class QComboBox
+ − 868 \brief The QComboBox widget is a combined button and popup list.
+ − 869
+ − 870 \ingroup basicwidgets
+ − 871
+ − 872
+ − 873 A QComboBox provides a means of presenting a list of options to the user
+ − 874 in a way that takes up the minimum amount of screen space.
+ − 875
+ − 876 A combobox is a selection widget that displays the current item,
+ − 877 and can pop up a list of selectable items. A combobox may be editable,
+ − 878 allowing the user to modify each item in the list.
+ − 879
+ − 880 Comboboxes can contain pixmaps as well as strings; the
+ − 881 insertItem() and setItemText() functions are suitably overloaded.
+ − 882 For editable comboboxes, the function clearEditText() is provided,
+ − 883 to clear the displayed string without changing the combobox's
+ − 884 contents.
+ − 885
+ − 886 There are two signals emitted if the current item of a combobox
+ − 887 changes, currentIndexChanged() and activated().
+ − 888 currentIndexChanged() is always emitted regardless if the change
+ − 889 was done programmatically or by user interaction, while
+ − 890 activated() is only emitted when the change is caused by user
+ − 891 interaction. The highlighted() signal is emitted when the user
+ − 892 highlights an item in the combobox popup list. All three signals
+ − 893 exist in two versions, one with a QString argument and one with an
+ − 894 \c int argument. If the user selectes or highlights a pixmap, only
+ − 895 the \c int signals are emitted. Whenever the text of an editable
+ − 896 combobox is changed the editTextChanged() signal is emitted.
+ − 897
+ − 898 When the user enters a new string in an editable combobox, the
+ − 899 widget may or may not insert it, and it can insert it in several
+ − 900 locations. The default policy is is \l AtBottom but you can change
+ − 901 this using setInsertPolicy().
+ − 902
+ − 903 It is possible to constrain the input to an editable combobox
+ − 904 using QValidator; see setValidator(). By default, any input is
+ − 905 accepted.
+ − 906
+ − 907 A combobox can be populated using the insert functions,
+ − 908 insertItem() and insertItems() for example. Items can be
+ − 909 changed with setItemText(). An item can be removed with
+ − 910 removeItem() and all items can be removed with clear(). The text
+ − 911 of the current item is returned by currentText(), and the text of
+ − 912 a numbered item is returned with text(). The current item can be
+ − 913 set with setCurrentIndex(). The number of items in the combobox is
+ − 914 returned by count(); the maximum number of items can be set with
+ − 915 setMaxCount(). You can allow editing using setEditable(). For
+ − 916 editable comboboxes you can set auto-completion using
+ − 917 setCompleter() and whether or not the user can add duplicates
+ − 918 is set with setDuplicatesEnabled().
+ − 919
+ − 920 QComboBox uses the \l{Model/View Programming}{model/view
+ − 921 framework} for its popup list and to store its items. By default
+ − 922 a QStandardItemModel stores the items and a QListView subclass
+ − 923 displays the popuplist. You can access the model and view directly
+ − 924 (with model() and view()), but QComboBox also provides functions
+ − 925 to set and get item data (e.g., setItemData() and itemText()). You
+ − 926 can also set a new model and view (with setModel() and setView()).
+ − 927 For the text and icon in the combobox label, the data in the model
+ − 928 that has the Qt::DisplayRole and Qt::DecorationRole is used.
+ − 929
+ − 930 \image qstyle-comboboxes.png Comboboxes in the different built-in styles.
+ − 931
+ − 932 \sa QLineEdit, QSpinBox, QRadioButton, QButtonGroup,
+ − 933 {fowler}{GUI Design Handbook: Combo Box, Drop-Down List Box}
+ − 934 */
+ − 935
+ − 936 void QComboBoxPrivate::init()
+ − 937 {
+ − 938 Q_Q(QComboBox);
+ − 939 q->setFocusPolicy(Qt::WheelFocus);
+ − 940 q->setSizePolicy(QSizePolicy(QSizePolicy::Preferred, QSizePolicy::Fixed,
+ − 941 QSizePolicy::ComboBox));
+ − 942 setLayoutItemMargins(QStyle::SE_ComboBoxLayoutItem);
+ − 943 q->setModel(new QStandardItemModel(0, 1, q));
+ − 944 q->setAttribute(Qt::WA_InputMethodEnabled);
+ − 945 }
+ − 946
+ − 947 QComboBoxPrivateContainer* QComboBoxPrivate::viewContainer()
+ − 948 {
+ − 949 if (container)
+ − 950 return container;
+ − 951
+ − 952 Q_Q(QComboBox);
+ − 953 container = new QComboBoxPrivateContainer(new QComboBoxListView(q), q);
+ − 954 container->itemView()->setModel(model);
+ − 955 container->itemView()->setTextElideMode(Qt::ElideMiddle);
+ − 956 updateDelegate(true);
+ − 957 updateLayoutDirection();
+ − 958 updateViewContainerPaletteAndOpacity();
+ − 959 QObject::connect(container, SIGNAL(itemSelected(QModelIndex)),
+ − 960 q, SLOT(_q_itemSelected(QModelIndex)));
+ − 961 QObject::connect(container->itemView()->selectionModel(),
+ − 962 SIGNAL(currentChanged(QModelIndex,QModelIndex)),
+ − 963 q, SLOT(_q_emitHighlighted(QModelIndex)));
+ − 964 QObject::connect(container, SIGNAL(resetButton()), q, SLOT(_q_resetButton()));
+ − 965 return container;
+ − 966 }
+ − 967
+ − 968
+ − 969 void QComboBoxPrivate::_q_resetButton()
+ − 970 {
+ − 971 updateArrow(QStyle::State_None);
+ − 972 }
+ − 973
+ − 974 void QComboBoxPrivate::_q_dataChanged(const QModelIndex &topLeft, const QModelIndex &bottomRight)
+ − 975 {
+ − 976 Q_Q(QComboBox);
+ − 977 if (inserting || topLeft.parent() != root)
+ − 978 return;
+ − 979
+ − 980 if (sizeAdjustPolicy == QComboBox::AdjustToContents) {
+ − 981 sizeHint = QSize();
+ − 982 adjustComboBoxSize();
+ − 983 q->updateGeometry();
+ − 984 }
+ − 985
+ − 986 if (currentIndex.row() >= topLeft.row() && currentIndex.row() <= bottomRight.row()) {
+ − 987 if (lineEdit) {
+ − 988 lineEdit->setText(q->itemText(currentIndex.row()));
+ − 989 updateLineEditGeometry();
+ − 990 }
+ − 991 q->update();
+ − 992 }
+ − 993 }
+ − 994
+ − 995 void QComboBoxPrivate::_q_rowsAboutToBeInserted(const QModelIndex & parent,
+ − 996 int /*start*/, int /*end*/)
+ − 997 {
+ − 998 if (parent != root)
+ − 999 return;
+ − 1000 indexBeforeChange = currentIndex.row();
+ − 1001 }
+ − 1002
+ − 1003 void QComboBoxPrivate::_q_rowsInserted(const QModelIndex &parent, int start, int end)
+ − 1004 {
+ − 1005 Q_Q(QComboBox);
+ − 1006 if (inserting || parent != root)
+ − 1007 return;
+ − 1008
+ − 1009 if (sizeAdjustPolicy == QComboBox::AdjustToContents) {
+ − 1010 sizeHint = QSize();
+ − 1011 adjustComboBoxSize();
+ − 1012 q->updateGeometry();
+ − 1013 }
+ − 1014
+ − 1015 // set current index if combo was previously empty
+ − 1016 if (start == 0 && (end - start + 1) == q->count() && !currentIndex.isValid()) {
+ − 1017 q->setCurrentIndex(0);
+ − 1018 // need to emit changed if model updated index "silently"
+ − 1019 } else if (currentIndex.row() != indexBeforeChange) {
+ − 1020 q->update();
+ − 1021 _q_emitCurrentIndexChanged(currentIndex);
+ − 1022 }
+ − 1023 }
+ − 1024
+ − 1025 void QComboBoxPrivate::_q_rowsAboutToBeRemoved(const QModelIndex &parent, int /*start*/, int /*end*/)
+ − 1026 {
+ − 1027 if (parent != root)
+ − 1028 return;
+ − 1029
+ − 1030 indexBeforeChange = currentIndex.row();
+ − 1031 }
+ − 1032
+ − 1033 void QComboBoxPrivate::_q_rowsRemoved(const QModelIndex &parent, int /*start*/, int /*end*/)
+ − 1034 {
+ − 1035 Q_Q(QComboBox);
+ − 1036 if (parent != root)
+ − 1037 return;
+ − 1038
+ − 1039 if (sizeAdjustPolicy == QComboBox::AdjustToContents) {
+ − 1040 sizeHint = QSize();
+ − 1041 adjustComboBoxSize();
+ − 1042 q->updateGeometry();
+ − 1043 }
+ − 1044
+ − 1045 // model has changed the currentIndex
+ − 1046 if (currentIndex.row() != indexBeforeChange) {
+ − 1047 if (!currentIndex.isValid() && q->count()) {
+ − 1048 q->setCurrentIndex(qMin(q->count() - 1, qMax(indexBeforeChange, 0)));
+ − 1049 return;
+ − 1050 }
+ − 1051 if (lineEdit) {
+ − 1052 lineEdit->setText(q->itemText(currentIndex.row()));
+ − 1053 updateLineEditGeometry();
+ − 1054 }
+ − 1055 q->update();
+ − 1056 _q_emitCurrentIndexChanged(currentIndex);
+ − 1057 }
+ − 1058 }
+ − 1059
+ − 1060
+ − 1061 void QComboBoxPrivate::updateViewContainerPaletteAndOpacity()
+ − 1062 {
+ − 1063 if (!container)
+ − 1064 return;
+ − 1065 Q_Q(QComboBox);
+ − 1066 QStyleOptionComboBox opt;
+ − 1067 q->initStyleOption(&opt);
+ − 1068 #ifndef QT_NO_MENU
+ − 1069 if (q->style()->styleHint(QStyle::SH_ComboBox_Popup, &opt, q)) {
+ − 1070 QMenu menu;
+ − 1071 menu.ensurePolished();
+ − 1072 container->setPalette(menu.palette());
+ − 1073 container->setWindowOpacity(menu.windowOpacity());
+ − 1074 } else
+ − 1075 #endif
+ − 1076 {
+ − 1077 container->setPalette(q->palette());
+ − 1078 container->setWindowOpacity(1.0);
+ − 1079 }
+ − 1080 }
+ − 1081
+ − 1082 /*!
+ − 1083 Initialize \a option with the values from this QComboBox. This method
+ − 1084 is useful for subclasses when they need a QStyleOptionComboBox, but don't want
+ − 1085 to fill in all the information themselves.
+ − 1086
+ − 1087 \sa QStyleOption::initFrom()
+ − 1088 */
+ − 1089 void QComboBox::initStyleOption(QStyleOptionComboBox *option) const
+ − 1090 {
+ − 1091 if (!option)
+ − 1092 return;
+ − 1093
+ − 1094 Q_D(const QComboBox);
+ − 1095 option->initFrom(this);
+ − 1096 option->editable = isEditable();
+ − 1097 option->frame = d->frame;
+ − 1098 if (hasFocus() && !option->editable)
+ − 1099 option->state |= QStyle::State_Selected;
+ − 1100 option->subControls = QStyle::SC_All;
+ − 1101 if (d->arrowState == QStyle::State_Sunken) {
+ − 1102 option->activeSubControls = QStyle::SC_ComboBoxArrow;
+ − 1103 option->state |= d->arrowState;
+ − 1104 } else {
+ − 1105 option->activeSubControls = d->hoverControl;
+ − 1106 }
+ − 1107 if (d->currentIndex.isValid()) {
+ − 1108 option->currentText = currentText();
+ − 1109 option->currentIcon = d->itemIcon(d->currentIndex);
+ − 1110 }
+ − 1111 option->iconSize = iconSize();
+ − 1112 if (d->container && d->container->isVisible())
+ − 1113 option->state |= QStyle::State_On;
+ − 1114 }
+ − 1115
+ − 1116 void QComboBoxPrivate::updateLineEditGeometry()
+ − 1117 {
+ − 1118 if (!lineEdit)
+ − 1119 return;
+ − 1120
+ − 1121 Q_Q(QComboBox);
+ − 1122 QStyleOptionComboBox opt;
+ − 1123 q->initStyleOption(&opt);
+ − 1124 QRect editRect = q->style()->subControlRect(QStyle::CC_ComboBox, &opt,
+ − 1125 QStyle::SC_ComboBoxEditField, q);
+ − 1126 if (!q->itemIcon(q->currentIndex()).isNull()) {
+ − 1127 QRect comboRect(editRect);
+ − 1128 editRect.setWidth(editRect.width() - q->iconSize().width() - 4);
+ − 1129 editRect = QStyle::alignedRect(q->layoutDirection(), Qt::AlignRight,
+ − 1130 editRect.size(), comboRect);
+ − 1131 }
+ − 1132 lineEdit->setGeometry(editRect);
+ − 1133 }
+ − 1134
+ − 1135 void QComboBoxPrivate::_q_returnPressed()
+ − 1136 {
+ − 1137 Q_Q(QComboBox);
+ − 1138 if (lineEdit && !lineEdit->text().isEmpty()) {
+ − 1139 if (q->count() >= maxCount && !(this->insertPolicy == QComboBox::InsertAtCurrent))
+ − 1140 return;
+ − 1141 lineEdit->deselect();
+ − 1142 lineEdit->end(false);
+ − 1143 QString text = lineEdit->text();
+ − 1144 // check for duplicates (if not enabled) and quit
+ − 1145 int index = -1;
+ − 1146 if (!duplicatesEnabled) {
+ − 1147 // Base how duplicates are determined on the autocompletion case sensitivity
+ − 1148 Qt::MatchFlags flags = Qt::MatchFixedString;
+ − 1149 #ifndef QT_NO_COMPLETER
+ − 1150 if (!lineEdit->completer() || lineEdit->completer()->caseSensitivity() == Qt::CaseSensitive)
+ − 1151 #endif
+ − 1152 flags |= Qt::MatchCaseSensitive;
+ − 1153 index = q->findText(text, flags);
+ − 1154 if (index != -1) {
+ − 1155 q->setCurrentIndex(index);
+ − 1156 emitActivated(currentIndex);
+ − 1157 return;
+ − 1158 }
+ − 1159 }
+ − 1160 switch (insertPolicy) {
+ − 1161 case QComboBox::InsertAtTop:
+ − 1162 index = 0;
+ − 1163 break;
+ − 1164 case QComboBox::InsertAtBottom:
+ − 1165 index = q->count();
+ − 1166 break;
+ − 1167 case QComboBox::InsertAtCurrent:
+ − 1168 case QComboBox::InsertAfterCurrent:
+ − 1169 case QComboBox::InsertBeforeCurrent:
+ − 1170 if (!q->count() || !currentIndex.isValid())
+ − 1171 index = 0;
+ − 1172 else if (insertPolicy == QComboBox::InsertAtCurrent)
+ − 1173 q->setItemText(q->currentIndex(), text);
+ − 1174 else if (insertPolicy == QComboBox::InsertAfterCurrent)
+ − 1175 index = q->currentIndex() + 1;
+ − 1176 else if (insertPolicy == QComboBox::InsertBeforeCurrent)
+ − 1177 index = q->currentIndex();
+ − 1178 break;
+ − 1179 case QComboBox::InsertAlphabetically:
+ − 1180 index = 0;
+ − 1181 for (int i=0; i< q->count(); i++, index++ ) {
+ − 1182 if (text.toLower() < q->itemText(i).toLower())
+ − 1183 break;
+ − 1184 }
+ − 1185 break;
+ − 1186 case QComboBox::NoInsert:
+ − 1187 default:
+ − 1188 break;
+ − 1189 }
+ − 1190 if (index >= 0) {
+ − 1191 q->insertItem(index, text);
+ − 1192 q->setCurrentIndex(index);
+ − 1193 emitActivated(currentIndex);
+ − 1194 }
+ − 1195 }
+ − 1196 }
+ − 1197
+ − 1198 void QComboBoxPrivate::_q_itemSelected(const QModelIndex &item)
+ − 1199 {
+ − 1200 Q_Q(QComboBox);
+ − 1201 if (item != currentIndex) {
+ − 1202 setCurrentIndex(item);
+ − 1203 } else if (lineEdit) {
+ − 1204 lineEdit->selectAll();
+ − 1205 lineEdit->setText(q->itemText(currentIndex.row()));
+ − 1206 }
+ − 1207 emitActivated(currentIndex);
+ − 1208 }
+ − 1209
+ − 1210 void QComboBoxPrivate::emitActivated(const QModelIndex &index)
+ − 1211 {
+ − 1212 Q_Q(QComboBox);
+ − 1213 if (!index.isValid())
+ − 1214 return;
+ − 1215 QString text(itemText(index));
+ − 1216 emit q->activated(index.row());
+ − 1217 emit q->activated(text);
+ − 1218 }
+ − 1219
+ − 1220 void QComboBoxPrivate::_q_emitHighlighted(const QModelIndex &index)
+ − 1221 {
+ − 1222 Q_Q(QComboBox);
+ − 1223 if (!index.isValid())
+ − 1224 return;
+ − 1225 QString text(itemText(index));
+ − 1226 emit q->highlighted(index.row());
+ − 1227 emit q->highlighted(text);
+ − 1228 }
+ − 1229
+ − 1230 void QComboBoxPrivate::_q_emitCurrentIndexChanged(const QModelIndex &index)
+ − 1231 {
+ − 1232 Q_Q(QComboBox);
+ − 1233 emit q->currentIndexChanged(index.row());
+ − 1234 emit q->currentIndexChanged(itemText(index));
+ − 1235 }
+ − 1236
+ − 1237 QString QComboBoxPrivate::itemText(const QModelIndex &index) const
+ − 1238 {
+ − 1239 return index.isValid() ? model->data(index, itemRole()).toString() : QString();
+ − 1240 }
+ − 1241
+ − 1242 int QComboBoxPrivate::itemRole() const
+ − 1243 {
+ − 1244 return q_func()->isEditable() ? Qt::EditRole : Qt::DisplayRole;
+ − 1245 }
+ − 1246
+ − 1247 /*!
+ − 1248 Destroys the combobox.
+ − 1249 */
+ − 1250 QComboBox::~QComboBox()
+ − 1251 {
+ − 1252 // ### check delegateparent and delete delegate if us?
+ − 1253 Q_D(QComboBox);
+ − 1254
+ − 1255 QT_TRY {
+ − 1256 disconnect(d->model, SIGNAL(destroyed()),
+ − 1257 this, SLOT(_q_modelDestroyed()));
+ − 1258 } QT_CATCH(...) {
+ − 1259 ; // objects can't throw in destructor
+ − 1260 }
+ − 1261 }
+ − 1262
+ − 1263 /*!
+ − 1264 \property QComboBox::maxVisibleItems
+ − 1265 \brief the maximum allowed size on screen of the combo box, measured in items
+ − 1266
+ − 1267 By default, this property has a value of 10.
+ − 1268
+ − 1269 \note This property is ignored for non-editable comboboxes in Mac style.
+ − 1270 */
+ − 1271 int QComboBox::maxVisibleItems() const
+ − 1272 {
+ − 1273 Q_D(const QComboBox);
+ − 1274 return d->maxVisibleItems;
+ − 1275 }
+ − 1276
+ − 1277 void QComboBox::setMaxVisibleItems(int maxItems)
+ − 1278 {
+ − 1279 Q_D(QComboBox);
+ − 1280 if (maxItems < 0) {
+ − 1281 qWarning("QComboBox::setMaxVisibleItems: "
+ − 1282 "Invalid max visible items (%d) must be >= 0", maxItems);
+ − 1283 return;
+ − 1284 }
+ − 1285 d->maxVisibleItems = maxItems;
+ − 1286 }
+ − 1287
+ − 1288 /*!
+ − 1289 \property QComboBox::count
+ − 1290 \brief the number of items in the combobox
+ − 1291
+ − 1292 By default, for an empty combo box, this property has a value of 0.
+ − 1293 */
+ − 1294 int QComboBox::count() const
+ − 1295 {
+ − 1296 Q_D(const QComboBox);
+ − 1297 return d->model->rowCount(d->root);
+ − 1298 }
+ − 1299
+ − 1300 /*!
+ − 1301 \property QComboBox::maxCount
+ − 1302 \brief the maximum number of items allowed in the combobox
+ − 1303
+ − 1304 \note If you set the maximum number to be less then the current
+ − 1305 amount of items in the combobox, the extra items will be
+ − 1306 truncated. This also applies if you have set an external model on
+ − 1307 the combobox.
+ − 1308
+ − 1309 By default, this property's value is derived from the highest
+ − 1310 signed integer available (typically 2147483647).
+ − 1311 */
+ − 1312 void QComboBox::setMaxCount(int max)
+ − 1313 {
+ − 1314 Q_D(QComboBox);
+ − 1315 if (max < 0) {
+ − 1316 qWarning("QComboBox::setMaxCount: Invalid count (%d) must be >= 0", max);
+ − 1317 return;
+ − 1318 }
+ − 1319
+ − 1320 if (max < count())
+ − 1321 d->model->removeRows(max, count() - max, d->root);
+ − 1322
+ − 1323 d->maxCount = max;
+ − 1324 }
+ − 1325
+ − 1326 int QComboBox::maxCount() const
+ − 1327 {
+ − 1328 Q_D(const QComboBox);
+ − 1329 return d->maxCount;
+ − 1330 }
+ − 1331
+ − 1332 #ifndef QT_NO_COMPLETER
+ − 1333
+ − 1334 /*!
+ − 1335 \property QComboBox::autoCompletion
+ − 1336 \brief whether the combobox provides auto-completion for editable items
+ − 1337 \since 4.1
+ − 1338 \obsolete
+ − 1339
+ − 1340 Use setCompleter() instead.
+ − 1341
+ − 1342 By default, this property is true.
+ − 1343
+ − 1344 \sa editable
+ − 1345 */
+ − 1346
+ − 1347 /*!
+ − 1348 \obsolete
+ − 1349
+ − 1350 Use setCompleter() instead.
+ − 1351 */
+ − 1352 bool QComboBox::autoCompletion() const
+ − 1353 {
+ − 1354 Q_D(const QComboBox);
+ − 1355 return d->autoCompletion;
+ − 1356 }
+ − 1357
+ − 1358 /*!
+ − 1359 \obsolete
+ − 1360
+ − 1361 Use setCompleter() instead.
+ − 1362 */
+ − 1363 void QComboBox::setAutoCompletion(bool enable)
+ − 1364 {
+ − 1365 Q_D(QComboBox);
+ − 1366
+ − 1367 #ifdef QT_KEYPAD_NAVIGATION
+ − 1368 if (QApplication::keypadNavigationEnabled() && !enable && isEditable())
+ − 1369 qWarning("QComboBox::setAutoCompletion: auto completion is mandatory when combo box editable");
+ − 1370 #endif
+ − 1371
+ − 1372 d->autoCompletion = enable;
+ − 1373 if (!d->lineEdit)
+ − 1374 return;
+ − 1375 if (enable) {
+ − 1376 if (d->lineEdit->completer())
+ − 1377 return;
+ − 1378 d->completer = new QCompleter(d->model, d->lineEdit);
+ − 1379 d->completer->setCaseSensitivity(d->autoCompletionCaseSensitivity);
+ − 1380 d->completer->setCompletionMode(QCompleter::InlineCompletion);
+ − 1381 d->completer->setCompletionColumn(d->modelColumn);
+ − 1382 d->lineEdit->setCompleter(d->completer);
+ − 1383 d->completer->setWidget(this);
+ − 1384 } else {
+ − 1385 d->lineEdit->setCompleter(0);
+ − 1386 }
+ − 1387 }
+ − 1388
+ − 1389 /*!
+ − 1390 \property QComboBox::autoCompletionCaseSensitivity
+ − 1391 \brief whether string comparisons are case-sensitive or case-insensitive for auto-completion
+ − 1392 \obsolete
+ − 1393
+ − 1394 By default, this property is Qt::CaseInsensitive.
+ − 1395
+ − 1396 Use setCompleter() instead. Case sensitivity of the auto completion can be
+ − 1397 changed using QCompleter::setCaseSensitivity().
+ − 1398
+ − 1399 \sa autoCompletion
+ − 1400 */
+ − 1401
+ − 1402 /*!
+ − 1403 \obsolete
+ − 1404
+ − 1405 Use setCompleter() and QCompleter::setCaseSensitivity() instead.
+ − 1406 */
+ − 1407 Qt::CaseSensitivity QComboBox::autoCompletionCaseSensitivity() const
+ − 1408 {
+ − 1409 Q_D(const QComboBox);
+ − 1410 return d->autoCompletionCaseSensitivity;
+ − 1411 }
+ − 1412
+ − 1413 /*!
+ − 1414 \obsolete
+ − 1415
+ − 1416 Use setCompleter() and QCompleter::setCaseSensitivity() instead.
+ − 1417 */
+ − 1418 void QComboBox::setAutoCompletionCaseSensitivity(Qt::CaseSensitivity sensitivity)
+ − 1419 {
+ − 1420 Q_D(QComboBox);
+ − 1421 d->autoCompletionCaseSensitivity = sensitivity;
+ − 1422 if (d->lineEdit && d->lineEdit->completer())
+ − 1423 d->lineEdit->completer()->setCaseSensitivity(sensitivity);
+ − 1424 }
+ − 1425
+ − 1426 #endif // QT_NO_COMPLETER
+ − 1427
+ − 1428 /*!
+ − 1429 \property QComboBox::duplicatesEnabled
+ − 1430 \brief whether the user can enter duplicate items into the combobox
+ − 1431
+ − 1432 Note that it is always possible to programmatically insert duplicate items into the
+ − 1433 combobox.
+ − 1434
+ − 1435 By default, this property is false (duplicates are not allowed).
+ − 1436 */
+ − 1437 bool QComboBox::duplicatesEnabled() const
+ − 1438 {
+ − 1439 Q_D(const QComboBox);
+ − 1440 return d->duplicatesEnabled;
+ − 1441 }
+ − 1442
+ − 1443 void QComboBox::setDuplicatesEnabled(bool enable)
+ − 1444 {
+ − 1445 Q_D(QComboBox);
+ − 1446 d->duplicatesEnabled = enable;
+ − 1447 }
+ − 1448
+ − 1449 /*! \fn int QComboBox::findText(const QString &text, Qt::MatchFlags flags = Qt::MatchExactly|Qt::MatchCaseSensitive) const
+ − 1450
+ − 1451 Returns the index of the item containing the given \a text; otherwise
+ − 1452 returns -1.
+ − 1453
+ − 1454 The \a flags specify how the items in the combobox are searched.
+ − 1455 */
+ − 1456
+ − 1457 /*!
+ − 1458 Returns the index of the item containing the given \a data for the
+ − 1459 given \a role; otherwise returns -1.
+ − 1460
+ − 1461 The \a flags specify how the items in the combobox are searched.
+ − 1462 */
+ − 1463 int QComboBox::findData(const QVariant &data, int role, Qt::MatchFlags flags) const
+ − 1464 {
+ − 1465 Q_D(const QComboBox);
+ − 1466 QModelIndexList result;
+ − 1467 QModelIndex start = d->model->index(0, d->modelColumn, d->root);
+ − 1468 result = d->model->match(start, role, data, 1, flags);
+ − 1469 if (result.isEmpty())
+ − 1470 return -1;
+ − 1471 return result.first().row();
+ − 1472 }
+ − 1473
+ − 1474 /*!
+ − 1475 \property QComboBox::insertPolicy
+ − 1476 \brief the policy used to determine where user-inserted items should
+ − 1477 appear in the combobox
+ − 1478
+ − 1479 The default value is \l AtBottom, indicating that new items will appear
+ − 1480 at the bottom of the list of items.
+ − 1481
+ − 1482 \sa InsertPolicy
+ − 1483 */
+ − 1484
+ − 1485 QComboBox::InsertPolicy QComboBox::insertPolicy() const
+ − 1486 {
+ − 1487 Q_D(const QComboBox);
+ − 1488 return d->insertPolicy;
+ − 1489 }
+ − 1490
+ − 1491 void QComboBox::setInsertPolicy(InsertPolicy policy)
+ − 1492 {
+ − 1493 Q_D(QComboBox);
+ − 1494 d->insertPolicy = policy;
+ − 1495 }
+ − 1496
+ − 1497 /*!
+ − 1498 \property QComboBox::sizeAdjustPolicy
+ − 1499 \brief the policy describing how the size of the combobox changes
+ − 1500 when the content changes
+ − 1501
+ − 1502 The default value is \l AdjustToContentsOnFirstShow.
+ − 1503
+ − 1504 \sa SizeAdjustPolicy
+ − 1505 */
+ − 1506
+ − 1507 QComboBox::SizeAdjustPolicy QComboBox::sizeAdjustPolicy() const
+ − 1508 {
+ − 1509 Q_D(const QComboBox);
+ − 1510 return d->sizeAdjustPolicy;
+ − 1511 }
+ − 1512
+ − 1513 void QComboBox::setSizeAdjustPolicy(QComboBox::SizeAdjustPolicy policy)
+ − 1514 {
+ − 1515 Q_D(QComboBox);
+ − 1516 if (policy == d->sizeAdjustPolicy)
+ − 1517 return;
+ − 1518
+ − 1519 d->sizeAdjustPolicy = policy;
+ − 1520 d->sizeHint = QSize();
+ − 1521 d->adjustComboBoxSize();
+ − 1522 updateGeometry();
+ − 1523 }
+ − 1524
+ − 1525 /*!
+ − 1526 \property QComboBox::minimumContentsLength
+ − 1527 \brief the minimum number of characters that should fit into the combobox.
+ − 1528
+ − 1529 The default value is 0.
+ − 1530
+ − 1531 If this property is set to a positive value, the
+ − 1532 minimumSizeHint() and sizeHint() take it into account.
+ − 1533
+ − 1534 \sa sizeAdjustPolicy
+ − 1535 */
+ − 1536 int QComboBox::minimumContentsLength() const
+ − 1537 {
+ − 1538 Q_D(const QComboBox);
+ − 1539 return d->minimumContentsLength;
+ − 1540 }
+ − 1541
+ − 1542 void QComboBox::setMinimumContentsLength(int characters)
+ − 1543 {
+ − 1544 Q_D(QComboBox);
+ − 1545 if (characters == d->minimumContentsLength || characters < 0)
+ − 1546 return;
+ − 1547
+ − 1548 d->minimumContentsLength = characters;
+ − 1549
+ − 1550 if (d->sizeAdjustPolicy == AdjustToContents
+ − 1551 || d->sizeAdjustPolicy == AdjustToMinimumContentsLength
+ − 1552 || d->sizeAdjustPolicy == AdjustToMinimumContentsLengthWithIcon) {
+ − 1553 d->sizeHint = QSize();
+ − 1554 d->adjustComboBoxSize();
+ − 1555 updateGeometry();
+ − 1556 }
+ − 1557 }
+ − 1558
+ − 1559 /*!
+ − 1560 \property QComboBox::iconSize
+ − 1561 \brief the size of the icons shown in the combobox.
+ − 1562
+ − 1563 Unless explicitly set this returns the default value of the
+ − 1564 current style. This size is the maximum size that icons can have;
+ − 1565 icons of smaller size are not scaled up.
+ − 1566 */
+ − 1567
+ − 1568 QSize QComboBox::iconSize() const
+ − 1569 {
+ − 1570 Q_D(const QComboBox);
+ − 1571 if (d->iconSize.isValid())
+ − 1572 return d->iconSize;
+ − 1573
+ − 1574 int iconWidth = style()->pixelMetric(QStyle::PM_SmallIconSize, 0, this);
+ − 1575 return QSize(iconWidth, iconWidth);
+ − 1576 }
+ − 1577
+ − 1578 void QComboBox::setIconSize(const QSize &size)
+ − 1579 {
+ − 1580 Q_D(QComboBox);
+ − 1581 if (size == d->iconSize)
+ − 1582 return;
+ − 1583
+ − 1584 view()->setIconSize(size);
+ − 1585 d->iconSize = size;
+ − 1586 d->sizeHint = QSize();
+ − 1587 updateGeometry();
+ − 1588 }
+ − 1589
+ − 1590 /*!
+ − 1591 \property QComboBox::editable
+ − 1592 \brief whether the combo box can be edited by the user
+ − 1593
+ − 1594 By default, this property is false.
+ − 1595 */
+ − 1596 bool QComboBox::isEditable() const
+ − 1597 {
+ − 1598 Q_D(const QComboBox);
+ − 1599 return d->lineEdit != 0;
+ − 1600 }
+ − 1601
+ − 1602 /*! \internal
+ − 1603 update the default delegate
+ − 1604 depending on the style's SH_ComboBox_Popup hint, we use a different default delegate.
+ − 1605
+ − 1606 but we do not change the delegate is the combobox use a custom delegate,
+ − 1607 unless \a force is set to true.
+ − 1608 */
+ − 1609 void QComboBoxPrivate::updateDelegate(bool force)
+ − 1610 {
+ − 1611 Q_Q(QComboBox);
+ − 1612 QStyleOptionComboBox opt;
+ − 1613 q->initStyleOption(&opt);
+ − 1614 if (q->style()->styleHint(QStyle::SH_ComboBox_Popup, &opt, q)) {
+ − 1615 if (force || qobject_cast<QComboBoxDelegate *>(q->itemDelegate()))
+ − 1616 q->setItemDelegate(new QComboMenuDelegate(q->view(), q));
+ − 1617 } else {
+ − 1618 if (force || qobject_cast<QComboMenuDelegate *>(q->itemDelegate()))
+ − 1619 q->setItemDelegate(new QComboBoxDelegate(q->view(), q));
+ − 1620 }
+ − 1621 }
+ − 1622
+ − 1623 QIcon QComboBoxPrivate::itemIcon(const QModelIndex &index) const
+ − 1624 {
+ − 1625 QVariant decoration = model->data(index, Qt::DecorationRole);
+ − 1626 if (decoration.type() == QVariant::Pixmap)
+ − 1627 return QIcon(qvariant_cast<QPixmap>(decoration));
+ − 1628 else
+ − 1629 return qvariant_cast<QIcon>(decoration);
+ − 1630 }
+ − 1631
+ − 1632 void QComboBox::setEditable(bool editable)
+ − 1633 {
+ − 1634 Q_D(QComboBox);
+ − 1635 if (isEditable() == editable)
+ − 1636 return;
+ − 1637
+ − 1638 d->updateDelegate();
+ − 1639
+ − 1640 QStyleOptionComboBox opt;
+ − 1641 initStyleOption(&opt);
+ − 1642 if (editable) {
+ − 1643 if (style()->styleHint(QStyle::SH_ComboBox_Popup, &opt, this)) {
+ − 1644 d->viewContainer()->updateScrollers();
+ − 1645 view()->setVerticalScrollBarPolicy(Qt::ScrollBarAsNeeded);
+ − 1646 }
+ − 1647 QLineEdit *le = new QLineEdit(this);
+ − 1648 setLineEdit(le);
+ − 1649 } else {
+ − 1650 if (style()->styleHint(QStyle::SH_ComboBox_Popup, &opt, this)) {
+ − 1651 d->viewContainer()->updateScrollers();
+ − 1652 view()->setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
+ − 1653 }
+ − 1654 setAttribute(Qt::WA_InputMethodEnabled, false);
+ − 1655 d->lineEdit->hide();
+ − 1656 d->lineEdit->deleteLater();
+ − 1657 d->lineEdit = 0;
+ − 1658 }
+ − 1659
+ − 1660 d->viewContainer()->updateTopBottomMargin();
+ − 1661 if (!testAttribute(Qt::WA_Resized))
+ − 1662 adjustSize();
+ − 1663 }
+ − 1664
+ − 1665 /*!
+ − 1666 Sets the line \a edit to use instead of the current line edit widget.
+ − 1667
+ − 1668 The combo box takes ownership of the line edit.
+ − 1669 */
+ − 1670 void QComboBox::setLineEdit(QLineEdit *edit)
+ − 1671 {
+ − 1672 Q_D(QComboBox);
+ − 1673 if (!edit) {
+ − 1674 qWarning("QComboBox::setLineEdit: cannot set a 0 line edit");
+ − 1675 return;
+ − 1676 }
+ − 1677
+ − 1678 if (edit == d->lineEdit)
+ − 1679 return;
+ − 1680
+ − 1681 edit->setText(currentText());
+ − 1682 delete d->lineEdit;
+ − 1683
+ − 1684 d->lineEdit = edit;
+ − 1685 if (d->lineEdit->parent() != this)
+ − 1686 d->lineEdit->setParent(this);
+ − 1687 connect(d->lineEdit, SIGNAL(returnPressed()), this, SLOT(_q_returnPressed()));
+ − 1688 connect(d->lineEdit, SIGNAL(textChanged(QString)), this, SIGNAL(editTextChanged(QString)));
+ − 1689 #ifdef QT3_SUPPORT
+ − 1690 connect(d->lineEdit, SIGNAL(textChanged(QString)), this, SIGNAL(textChanged(QString)));
+ − 1691 #endif
+ − 1692 d->lineEdit->setFrame(false);
+ − 1693 d->lineEdit->setContextMenuPolicy(Qt::NoContextMenu);
+ − 1694 d->lineEdit->setFocusProxy(this);
+ − 1695 d->lineEdit->setAttribute(Qt::WA_MacShowFocusRect, false);
+ − 1696 #ifndef QT_NO_COMPLETER
+ − 1697 setAutoCompletion(d->autoCompletion);
+ − 1698 #endif
+ − 1699
+ − 1700 #ifdef QT_KEYPAD_NAVIGATION
+ − 1701 #ifndef QT_NO_COMPLETER
+ − 1702 if (QApplication::keypadNavigationEnabled()) {
+ − 1703 // Editable combo boxes will have a completer that is set to UnfilteredPopupCompletion.
+ − 1704 // This means that when the user enters edit mode they are immediately presented with a
+ − 1705 // list of possible completions.
+ − 1706 setAutoCompletion(true);
+ − 1707 if (d->completer) {
+ − 1708 d->completer->setCompletionMode(QCompleter::UnfilteredPopupCompletion);
+ − 1709 connect(d->completer, SIGNAL(activated(QModelIndex)), this, SLOT(_q_completerActivated()));
+ − 1710 }
+ − 1711 }
+ − 1712 #endif
+ − 1713 #endif
+ − 1714
+ − 1715 setAttribute(Qt::WA_InputMethodEnabled);
+ − 1716 d->updateLayoutDirection();
+ − 1717 d->updateLineEditGeometry();
+ − 1718 if (isVisible())
+ − 1719 d->lineEdit->show();
+ − 1720
+ − 1721 update();
+ − 1722 }
+ − 1723
+ − 1724 /*!
+ − 1725 Returns the line edit used to edit items in the combobox, or 0 if there
+ − 1726 is no line edit.
+ − 1727
+ − 1728 Only editable combo boxes have a line edit.
+ − 1729 */
+ − 1730 QLineEdit *QComboBox::lineEdit() const
+ − 1731 {
+ − 1732 Q_D(const QComboBox);
+ − 1733 return d->lineEdit;
+ − 1734 }
+ − 1735
+ − 1736 #ifndef QT_NO_VALIDATOR
+ − 1737 /*!
+ − 1738 \fn void QComboBox::setValidator(const QValidator *validator)
+ − 1739
+ − 1740 Sets the \a validator to use instead of the current validator.
+ − 1741 */
+ − 1742
+ − 1743 void QComboBox::setValidator(const QValidator *v)
+ − 1744 {
+ − 1745 Q_D(QComboBox);
+ − 1746 if (d->lineEdit)
+ − 1747 d->lineEdit->setValidator(v);
+ − 1748 }
+ − 1749
+ − 1750 /*!
+ − 1751 Returns the validator that is used to constrain text input for the
+ − 1752 combobox.
+ − 1753
+ − 1754 \sa editable
+ − 1755 */
+ − 1756 const QValidator *QComboBox::validator() const
+ − 1757 {
+ − 1758 Q_D(const QComboBox);
+ − 1759 return d->lineEdit ? d->lineEdit->validator() : 0;
+ − 1760 }
+ − 1761 #endif // QT_NO_VALIDATOR
+ − 1762
+ − 1763 #ifndef QT_NO_COMPLETER
+ − 1764
+ − 1765 /*!
+ − 1766 \fn void QComboBox::setCompleter(QCompleter *completer)
+ − 1767 \since 4.2
+ − 1768
+ − 1769 Sets the \a completer to use instead of the current completer.
+ − 1770 If \a completer is 0, auto completion is disabled.
+ − 1771
+ − 1772 By default, for an editable combo box, a QCompleter that
+ − 1773 performs case insensitive inline completion is automatically created.
+ − 1774 */
+ − 1775 void QComboBox::setCompleter(QCompleter *c)
+ − 1776 {
+ − 1777 Q_D(QComboBox);
+ − 1778 if (!d->lineEdit)
+ − 1779 return;
+ − 1780 d->lineEdit->setCompleter(c);
+ − 1781 if (c)
+ − 1782 c->setWidget(this);
+ − 1783 }
+ − 1784
+ − 1785 /*!
+ − 1786 \since 4.2
+ − 1787
+ − 1788 Returns the completer that is used to auto complete text input for the
+ − 1789 combobox.
+ − 1790
+ − 1791 \sa editable
+ − 1792 */
+ − 1793 QCompleter *QComboBox::completer() const
+ − 1794 {
+ − 1795 Q_D(const QComboBox);
+ − 1796 return d->lineEdit ? d->lineEdit->completer() : 0;
+ − 1797 }
+ − 1798
+ − 1799 #endif // QT_NO_COMPLETER
+ − 1800
+ − 1801 /*!
+ − 1802 Returns the item delegate used by the popup list view.
+ − 1803
+ − 1804 \sa setItemDelegate()
+ − 1805 */
+ − 1806 QAbstractItemDelegate *QComboBox::itemDelegate() const
+ − 1807 {
+ − 1808 return view()->itemDelegate();
+ − 1809 }
+ − 1810
+ − 1811 /*!
+ − 1812 Sets the item \a delegate for the popup list view.
+ − 1813 The combobox takes ownership of the delegate.
+ − 1814
+ − 1815 \warning You should not share the same instance of a delegate between comboboxes,
+ − 1816 widget mappers or views. Doing so can cause incorrect or unintuitive editing behavior
+ − 1817 since each view connected to a given delegate may receive the
+ − 1818 \l{QAbstractItemDelegate::}{closeEditor()} signal, and attempt to access, modify or
+ − 1819 close an editor that has already been closed.
+ − 1820
+ − 1821 \sa itemDelegate()
+ − 1822 */
+ − 1823 void QComboBox::setItemDelegate(QAbstractItemDelegate *delegate)
+ − 1824 {
+ − 1825 if (!delegate) {
+ − 1826 qWarning("QComboBox::setItemDelegate: cannot set a 0 delegate");
+ − 1827 return;
+ − 1828 }
+ − 1829 delete view()->itemDelegate();
+ − 1830 view()->setItemDelegate(delegate);
+ − 1831 }
+ − 1832
+ − 1833 /*!
+ − 1834 Returns the model used by the combobox.
+ − 1835 */
+ − 1836
+ − 1837 QAbstractItemModel *QComboBox::model() const
+ − 1838 {
+ − 1839 Q_D(const QComboBox);
+ − 1840 if (d->model == QAbstractItemModelPrivate::staticEmptyModel()) {
+ − 1841 QComboBox *that = const_cast<QComboBox*>(this);
+ − 1842 that->setModel(new QStandardItemModel(0, 1, that));
+ − 1843 }
+ − 1844 return d->model;
+ − 1845 }
+ − 1846
+ − 1847 /*!
+ − 1848 Sets the model to be \a model. \a model must not be 0.
+ − 1849 If you want to clear the contents of a model, call clear().
+ − 1850
+ − 1851 \sa clear()
+ − 1852 */
+ − 1853 void QComboBox::setModel(QAbstractItemModel *model)
+ − 1854 {
+ − 1855 Q_D(QComboBox);
+ − 1856
+ − 1857 if (!model) {
+ − 1858 qWarning("QComboBox::setModel: cannot set a 0 model");
+ − 1859 return;
+ − 1860 }
+ − 1861
+ − 1862 #ifndef QT_NO_COMPLETER
+ − 1863 if (d->lineEdit && d->lineEdit->completer()
+ − 1864 && d->lineEdit->completer() == d->completer)
+ − 1865 d->lineEdit->completer()->setModel(model);
+ − 1866 #endif
+ − 1867 if (d->model) {
+ − 1868 disconnect(d->model, SIGNAL(dataChanged(QModelIndex,QModelIndex)),
+ − 1869 this, SLOT(_q_dataChanged(QModelIndex,QModelIndex)));
+ − 1870 disconnect(d->model, SIGNAL(rowsAboutToBeInserted(QModelIndex,int,int)),
+ − 1871 this, SLOT(_q_rowsAboutToBeInserted(QModelIndex,int,int)));
+ − 1872 disconnect(d->model, SIGNAL(rowsInserted(QModelIndex,int,int)),
+ − 1873 this, SLOT(_q_rowsInserted(QModelIndex,int,int)));
+ − 1874 disconnect(d->model, SIGNAL(rowsAboutToBeRemoved(QModelIndex,int,int)),
+ − 1875 this, SLOT(_q_rowsAboutToBeRemoved(QModelIndex,int,int)));
+ − 1876 disconnect(d->model, SIGNAL(rowsRemoved(QModelIndex,int,int)),
+ − 1877 this, SLOT(_q_rowsRemoved(QModelIndex,int,int)));
+ − 1878 disconnect(d->model, SIGNAL(destroyed()),
+ − 1879 this, SLOT(_q_modelDestroyed()));
+ − 1880 disconnect(d->model, SIGNAL(modelReset()),
+ − 1881 this, SLOT(_q_modelReset()));
+ − 1882 if (d->model->QObject::parent() == this)
+ − 1883 delete d->model;
+ − 1884 }
+ − 1885
+ − 1886 d->model = model;
+ − 1887
+ − 1888 connect(model, SIGNAL(dataChanged(QModelIndex,QModelIndex)),
+ − 1889 this, SLOT(_q_dataChanged(QModelIndex,QModelIndex)));
+ − 1890 connect(model, SIGNAL(rowsAboutToBeInserted(QModelIndex,int,int)),
+ − 1891 this, SLOT(_q_rowsAboutToBeInserted(QModelIndex,int,int)));
+ − 1892 connect(model, SIGNAL(rowsInserted(QModelIndex,int,int)),
+ − 1893 this, SLOT(_q_rowsInserted(QModelIndex,int,int)));
+ − 1894 connect(model, SIGNAL(rowsAboutToBeRemoved(QModelIndex,int,int)),
+ − 1895 this, SLOT(_q_rowsAboutToBeRemoved(QModelIndex,int,int)));
+ − 1896 connect(model, SIGNAL(rowsRemoved(QModelIndex,int,int)),
+ − 1897 this, SLOT(_q_rowsRemoved(QModelIndex,int,int)));
+ − 1898 connect(model, SIGNAL(destroyed()),
+ − 1899 this, SLOT(_q_modelDestroyed()));
+ − 1900 connect(model, SIGNAL(modelReset()),
+ − 1901 this, SLOT(_q_modelReset()));
+ − 1902
+ − 1903 if (d->container)
+ − 1904 d->container->itemView()->setModel(model);
+ − 1905
+ − 1906 bool currentReset = false;
+ − 1907
+ − 1908 if (count()) {
+ − 1909 for (int pos=0; pos < count(); pos++) {
+ − 1910 if (d->model->index(pos, d->modelColumn, d->root).flags() & Qt::ItemIsEnabled) {
+ − 1911 setCurrentIndex(pos);
+ − 1912 currentReset = true;
+ − 1913 break;
+ − 1914 }
+ − 1915 }
+ − 1916 }
+ − 1917
+ − 1918 if (!currentReset)
+ − 1919 setCurrentIndex(-1);
+ − 1920
+ − 1921 d->modelChanged();
+ − 1922 }
+ − 1923
+ − 1924 /*!
+ − 1925 Returns the root model item index for the items in the combobox.
+ − 1926
+ − 1927 \sa setRootModelIndex()
+ − 1928 */
+ − 1929
+ − 1930 QModelIndex QComboBox::rootModelIndex() const
+ − 1931 {
+ − 1932 Q_D(const QComboBox);
+ − 1933 return QModelIndex(d->root);
+ − 1934 }
+ − 1935
+ − 1936 /*!
+ − 1937 Sets the root model item \a index for the items in the combobox.
+ − 1938
+ − 1939 \sa rootModelIndex()
+ − 1940 */
+ − 1941 void QComboBox::setRootModelIndex(const QModelIndex &index)
+ − 1942 {
+ − 1943 Q_D(QComboBox);
+ − 1944 d->root = QPersistentModelIndex(index);
+ − 1945 view()->setRootIndex(index);
+ − 1946 update();
+ − 1947 }
+ − 1948
+ − 1949 /*!
+ − 1950 \property QComboBox::currentIndex
+ − 1951 \brief the index of the current item in the combobox.
+ − 1952
+ − 1953 The current index can change when inserting or removing items.
+ − 1954
+ − 1955 By default, for an empty combo box or a combo box in which no current
+ − 1956 item is set, this property has a value of -1.
+ − 1957 */
+ − 1958 int QComboBox::currentIndex() const
+ − 1959 {
+ − 1960 Q_D(const QComboBox);
+ − 1961 return d->currentIndex.row();
+ − 1962 }
+ − 1963
+ − 1964 void QComboBox::setCurrentIndex(int index)
+ − 1965 {
+ − 1966 Q_D(QComboBox);
+ − 1967 QModelIndex mi = d->model->index(index, d->modelColumn, d->root);
+ − 1968 d->setCurrentIndex(mi);
+ − 1969 }
+ − 1970
+ − 1971 void QComboBoxPrivate::setCurrentIndex(const QModelIndex &mi)
+ − 1972 {
+ − 1973 Q_Q(QComboBox);
+ − 1974 bool indexChanged = (mi != currentIndex);
+ − 1975 if (indexChanged)
+ − 1976 currentIndex = QPersistentModelIndex(mi);
+ − 1977 if (lineEdit) {
+ − 1978 QString newText = q->itemText(currentIndex.row());
+ − 1979 if (lineEdit->text() != newText)
+ − 1980 lineEdit->setText(q->itemText(currentIndex.row()));
+ − 1981 updateLineEditGeometry();
+ − 1982 }
+ − 1983 if (indexChanged) {
+ − 1984 q->update();
+ − 1985 _q_emitCurrentIndexChanged(currentIndex);
+ − 1986 }
+ − 1987 }
+ − 1988
+ − 1989 /*!
+ − 1990 \property QComboBox::currentText
+ − 1991 \brief the text of the current item
+ − 1992
+ − 1993 By default, for an empty combo box or a combo box in which no current
+ − 1994 item is set, this property contains an empty string.
+ − 1995 */
+ − 1996 QString QComboBox::currentText() const
+ − 1997 {
+ − 1998 Q_D(const QComboBox);
+ − 1999 if (d->lineEdit)
+ − 2000 return d->lineEdit->text();
+ − 2001 else if (d->currentIndex.isValid())
+ − 2002 return d->itemText(d->currentIndex);
+ − 2003 else
+ − 2004 return QString();
+ − 2005 }
+ − 2006
+ − 2007 /*!
+ − 2008 Returns the text for the given \a index in the combobox.
+ − 2009 */
+ − 2010 QString QComboBox::itemText(int index) const
+ − 2011 {
+ − 2012 Q_D(const QComboBox);
+ − 2013 QModelIndex mi = d->model->index(index, d->modelColumn, d->root);
+ − 2014 return d->itemText(mi);
+ − 2015 }
+ − 2016
+ − 2017 /*!
+ − 2018 Returns the icon for the given \a index in the combobox.
+ − 2019 */
+ − 2020 QIcon QComboBox::itemIcon(int index) const
+ − 2021 {
+ − 2022 Q_D(const QComboBox);
+ − 2023 QModelIndex mi = d->model->index(index, d->modelColumn, d->root);
+ − 2024 return d->itemIcon(mi);
+ − 2025 }
+ − 2026
+ − 2027 /*!
+ − 2028 Returns the data for the given \a role in the given \a index in the
+ − 2029 combobox, or QVariant::Invalid if there is no data for this role.
+ − 2030 */
+ − 2031 QVariant QComboBox::itemData(int index, int role) const
+ − 2032 {
+ − 2033 Q_D(const QComboBox);
+ − 2034 QModelIndex mi = d->model->index(index, d->modelColumn, d->root);
+ − 2035 return d->model->data(mi, role);
+ − 2036 }
+ − 2037
+ − 2038 /*!
+ − 2039 \fn void QComboBox::insertItem(int index, const QString &text, const QVariant &userData)
+ − 2040
+ − 2041 Inserts the \a text and \a userData (stored in the Qt::UserRole)
+ − 2042 into the combobox at the given \a index.
+ − 2043
+ − 2044 If the index is equal to or higher than the total number of items,
+ − 2045 the new item is appended to the list of existing items. If the
+ − 2046 index is zero or negative, the new item is prepended to the list
+ − 2047 of existing items.
+ − 2048
+ − 2049 \sa insertItems()
+ − 2050 */
+ − 2051
+ − 2052 /*!
+ − 2053
+ − 2054 Inserts the \a icon, \a text and \a userData (stored in the
+ − 2055 Qt::UserRole) into the combobox at the given \a index.
+ − 2056
+ − 2057 If the index is equal to or higher than the total number of items,
+ − 2058 the new item is appended to the list of existing items. If the
+ − 2059 index is zero or negative, the new item is prepended to the list
+ − 2060 of existing items.
+ − 2061
+ − 2062 \sa insertItems()
+ − 2063 */
+ − 2064 void QComboBox::insertItem(int index, const QIcon &icon, const QString &text, const QVariant &userData)
+ − 2065 {
+ − 2066 Q_D(QComboBox);
+ − 2067 int itemCount = count();
+ − 2068 index = qBound(0, index, itemCount);
+ − 2069 if (index >= d->maxCount)
+ − 2070 return;
+ − 2071
+ − 2072 // For the common case where we are using the built in QStandardItemModel
+ − 2073 // construct a QStandardItem, reducing the number of expensive signals from the model
+ − 2074 if (QStandardItemModel *m = qobject_cast<QStandardItemModel*>(d->model)) {
+ − 2075 QStandardItem *item = new QStandardItem(text);
+ − 2076 if (!icon.isNull()) item->setData(icon, Qt::DecorationRole);
+ − 2077 if (userData.isValid()) item->setData(userData, Qt::UserRole);
+ − 2078 m->insertRow(index, item);
+ − 2079 ++itemCount;
+ − 2080 } else {
+ − 2081 d->inserting = true;
+ − 2082 if (d->model->insertRows(index, 1, d->root)) {
+ − 2083 QModelIndex item = d->model->index(index, d->modelColumn, d->root);
+ − 2084 if (icon.isNull() && !userData.isValid()) {
+ − 2085 d->model->setData(item, text, Qt::EditRole);
+ − 2086 } else {
+ − 2087 QMap<int, QVariant> values;
+ − 2088 if (!text.isNull()) values.insert(Qt::EditRole, text);
+ − 2089 if (!icon.isNull()) values.insert(Qt::DecorationRole, icon);
+ − 2090 if (userData.isValid()) values.insert(Qt::UserRole, userData);
+ − 2091 if (!values.isEmpty()) d->model->setItemData(item, values);
+ − 2092 }
+ − 2093 d->inserting = false;
+ − 2094 d->_q_rowsInserted(d->root, index, index);
+ − 2095 ++itemCount;
+ − 2096 } else {
+ − 2097 d->inserting = false;
+ − 2098 }
+ − 2099 }
+ − 2100
+ − 2101 if (itemCount > d->maxCount)
+ − 2102 d->model->removeRows(itemCount - 1, itemCount - d->maxCount, d->root);
+ − 2103 }
+ − 2104
+ − 2105 /*!
+ − 2106 Inserts the strings from the \a list into the combobox as separate items,
+ − 2107 starting at the \a index specified.
+ − 2108
+ − 2109 If the index is equal to or higher than the total number of items, the new items
+ − 2110 are appended to the list of existing items. If the index is zero or negative, the
+ − 2111 new items are prepended to the list of existing items.
+ − 2112
+ − 2113 \sa insertItem()
+ − 2114 */
+ − 2115 void QComboBox::insertItems(int index, const QStringList &list)
+ − 2116 {
+ − 2117 Q_D(QComboBox);
+ − 2118 if (list.isEmpty())
+ − 2119 return;
+ − 2120 index = qBound(0, index, count());
+ − 2121 int insertCount = qMin(d->maxCount - index, list.count());
+ − 2122 if (insertCount <= 0)
+ − 2123 return;
+ − 2124 // For the common case where we are using the built in QStandardItemModel
+ − 2125 // construct a QStandardItem, reducing the number of expensive signals from the model
+ − 2126 if (QStandardItemModel *m = qobject_cast<QStandardItemModel*>(d->model)) {
+ − 2127 QList<QStandardItem *> items;
+ − 2128 QStandardItem *hiddenRoot = m->invisibleRootItem();
+ − 2129 for (int i = 0; i < insertCount; ++i)
+ − 2130 items.append(new QStandardItem(list.at(i)));
+ − 2131 hiddenRoot->insertRows(index, items);
+ − 2132 } else {
+ − 2133 d->inserting = true;
+ − 2134 if (d->model->insertRows(index, insertCount, d->root)) {
+ − 2135 QModelIndex item;
+ − 2136 for (int i = 0; i < insertCount; ++i) {
+ − 2137 item = d->model->index(i+index, d->modelColumn, d->root);
+ − 2138 d->model->setData(item, list.at(i), Qt::EditRole);
+ − 2139 }
+ − 2140 d->inserting = false;
+ − 2141 d->_q_rowsInserted(d->root, index, index + insertCount - 1);
+ − 2142 } else {
+ − 2143 d->inserting = false;
+ − 2144 }
+ − 2145 }
+ − 2146
+ − 2147 int mc = count();
+ − 2148 if (mc > d->maxCount)
+ − 2149 d->model->removeRows(d->maxCount, mc - d->maxCount, d->root);
+ − 2150 }
+ − 2151
+ − 2152 /*!
+ − 2153 \since 4.4
+ − 2154
+ − 2155 Inserts a separator item into the combobox at the given \a index.
+ − 2156
+ − 2157 If the index is equal to or higher than the total number of items, the new item
+ − 2158 is appended to the list of existing items. If the index is zero or negative, the
+ − 2159 new item is prepended to the list of existing items.
+ − 2160
+ − 2161 \sa insertItem()
+ − 2162 */
+ − 2163 void QComboBox::insertSeparator(int index)
+ − 2164 {
+ − 2165 Q_D(QComboBox);
+ − 2166 int itemCount = count();
+ − 2167 index = qBound(0, index, itemCount);
+ − 2168 if (index >= d->maxCount)
+ − 2169 return;
+ − 2170 insertItem(index, QIcon(), QString());
+ − 2171 QComboBoxDelegate::setSeparator(d->model, d->model->index(index, 0, d->root));
+ − 2172 }
+ − 2173
+ − 2174 /*!
+ − 2175 Removes the item at the given \a index from the combobox.
+ − 2176 This will update the current index if the index is removed.
+ − 2177
+ − 2178 This function does nothing if \a index is out of range.
+ − 2179 */
+ − 2180 void QComboBox::removeItem(int index)
+ − 2181 {
+ − 2182 Q_D(QComboBox);
+ − 2183 if (index < 0 || index >= count())
+ − 2184 return;
+ − 2185 d->model->removeRows(index, 1, d->root);
+ − 2186 }
+ − 2187
+ − 2188 /*!
+ − 2189 Sets the \a text for the item on the given \a index in the combobox.
+ − 2190 */
+ − 2191 void QComboBox::setItemText(int index, const QString &text)
+ − 2192 {
+ − 2193 Q_D(const QComboBox);
+ − 2194 QModelIndex item = d->model->index(index, d->modelColumn, d->root);
+ − 2195 if (item.isValid()) {
+ − 2196 d->model->setData(item, text, Qt::EditRole);
+ − 2197 }
+ − 2198 }
+ − 2199
+ − 2200 /*!
+ − 2201 Sets the \a icon for the item on the given \a index in the combobox.
+ − 2202 */
+ − 2203 void QComboBox::setItemIcon(int index, const QIcon &icon)
+ − 2204 {
+ − 2205 Q_D(const QComboBox);
+ − 2206 QModelIndex item = d->model->index(index, d->modelColumn, d->root);
+ − 2207 if (item.isValid()) {
+ − 2208 d->model->setData(item, icon, Qt::DecorationRole);
+ − 2209 }
+ − 2210 }
+ − 2211
+ − 2212 /*!
+ − 2213 Sets the data \a role for the item on the given \a index in the combobox
+ − 2214 to the specified \a value.
+ − 2215 */
+ − 2216 void QComboBox::setItemData(int index, const QVariant &value, int role)
+ − 2217 {
+ − 2218 Q_D(const QComboBox);
+ − 2219 QModelIndex item = d->model->index(index, d->modelColumn, d->root);
+ − 2220 if (item.isValid()) {
+ − 2221 d->model->setData(item, value, role);
+ − 2222 }
+ − 2223 }
+ − 2224
+ − 2225 /*!
+ − 2226 Returns the list view used for the combobox popup.
+ − 2227 */
+ − 2228 QAbstractItemView *QComboBox::view() const
+ − 2229 {
+ − 2230 Q_D(const QComboBox);
+ − 2231 return const_cast<QComboBoxPrivate*>(d)->viewContainer()->itemView();
+ − 2232 }
+ − 2233
+ − 2234 /*!
+ − 2235 Sets the view to be used in the combobox popup to the given \a
+ − 2236 itemView. The combobox takes ownership of the view.
+ − 2237
+ − 2238 Note: If you want to use the convenience views (like QListWidget,
+ − 2239 QTableWidget or QTreeWidget), make sure to call setModel() on the
+ − 2240 combobox with the convenience widgets model before calling this
+ − 2241 function.
+ − 2242 */
+ − 2243 void QComboBox::setView(QAbstractItemView *itemView)
+ − 2244 {
+ − 2245 Q_D(QComboBox);
+ − 2246 if (!itemView) {
+ − 2247 qWarning("QComboBox::setView: cannot set a 0 view");
+ − 2248 return;
+ − 2249 }
+ − 2250
+ − 2251 if (itemView->model() != d->model)
+ − 2252 itemView->setModel(d->model);
+ − 2253 d->viewContainer()->setItemView(itemView);
+ − 2254 }
+ − 2255
+ − 2256 /*!
+ − 2257 \reimp
+ − 2258 */
+ − 2259 QSize QComboBox::minimumSizeHint() const
+ − 2260 {
+ − 2261 Q_D(const QComboBox);
+ − 2262 return d->recomputeSizeHint(d->minimumSizeHint);
+ − 2263 }
+ − 2264
+ − 2265 /*!
+ − 2266 \reimp
+ − 2267
+ − 2268 This implementation caches the size hint to avoid resizing when
+ − 2269 the contents change dynamically. To invalidate the cached value
+ − 2270 change the \l sizeAdjustPolicy.
+ − 2271 */
+ − 2272 QSize QComboBox::sizeHint() const
+ − 2273 {
+ − 2274 Q_D(const QComboBox);
+ − 2275 return d->recomputeSizeHint(d->sizeHint);
+ − 2276 }
+ − 2277
+ − 2278 /*!
+ − 2279 Displays the list of items in the combobox. If the list is empty
+ − 2280 then the no items will be shown.
+ − 2281
+ − 2282 If you reimplement this function to show a custom pop-up, make
+ − 2283 sure you call hidePopup() to reset the internal state.
+ − 2284
+ − 2285 \sa hidePopup()
+ − 2286 */
+ − 2287 void QComboBox::showPopup()
+ − 2288 {
+ − 2289 Q_D(QComboBox);
+ − 2290 if (count() <= 0)
+ − 2291 return;
+ − 2292
+ − 2293 #ifdef QT_KEYPAD_NAVIGATION
+ − 2294 #ifndef QT_NO_COMPLETER
+ − 2295 if (QApplication::keypadNavigationEnabled() && d->completer) {
+ − 2296 // editable combo box is line edit plus completer
+ − 2297 setEditFocus(true);
+ − 2298 d->completer->complete(); // show popup
+ − 2299 return;
+ − 2300 }
+ − 2301 #endif
+ − 2302 #endif
+ − 2303
+ − 2304 QStyle * const style = this->style();
+ − 2305
+ − 2306 // set current item and select it
+ − 2307 view()->selectionModel()->setCurrentIndex(d->currentIndex,
+ − 2308 QItemSelectionModel::ClearAndSelect);
+ − 2309 QComboBoxPrivateContainer* container = d->viewContainer();
+ − 2310 QStyleOptionComboBox opt;
+ − 2311 initStyleOption(&opt);
+ − 2312 QRect listRect(style->subControlRect(QStyle::CC_ComboBox, &opt,
+ − 2313 QStyle::SC_ComboBoxListBoxPopup, this));
+ − 2314 QRect screen = d->popupGeometry(QApplication::desktop()->screenNumber(this));
+ − 2315 QPoint below = mapToGlobal(listRect.bottomLeft());
+ − 2316 int belowHeight = screen.bottom() - below.y();
+ − 2317 QPoint above = mapToGlobal(listRect.topLeft());
+ − 2318 int aboveHeight = above.y() - screen.y();
+ − 2319 bool boundToScreen = !window()->testAttribute(Qt::WA_DontShowOnScreen);
+ − 2320
+ − 2321 const bool usePopup = style->styleHint(QStyle::SH_ComboBox_Popup, &opt, this);
+ − 2322 {
+ − 2323 int listHeight = 0;
+ − 2324 int count = 0;
+ − 2325 QStack<QModelIndex> toCheck;
+ − 2326 toCheck.push(view()->rootIndex());
+ − 2327 #ifndef QT_NO_TREEVIEW
+ − 2328 QTreeView *treeView = qobject_cast<QTreeView*>(view());
+ − 2329 if (treeView && treeView->header() && !treeView->header()->isHidden())
+ − 2330 listHeight += treeView->header()->height();
+ − 2331 #endif
+ − 2332 while (!toCheck.isEmpty()) {
+ − 2333 QModelIndex parent = toCheck.pop();
+ − 2334 for (int i = 0; i < d->model->rowCount(parent); ++i) {
+ − 2335 QModelIndex idx = d->model->index(i, d->modelColumn, parent);
+ − 2336 if (!idx.isValid())
+ − 2337 continue;
+ − 2338 listHeight += view()->visualRect(idx).height() + container->spacing();
+ − 2339 #ifndef QT_NO_TREEVIEW
+ − 2340 if (d->model->hasChildren(idx) && treeView && treeView->isExpanded(idx))
+ − 2341 toCheck.push(idx);
+ − 2342 #endif
+ − 2343 ++count;
+ − 2344 if (!usePopup && count > d->maxVisibleItems) {
+ − 2345 toCheck.clear();
+ − 2346 break;
+ − 2347 }
+ − 2348 }
+ − 2349 }
+ − 2350 listRect.setHeight(listHeight);
+ − 2351 }
+ − 2352
+ − 2353 {
+ − 2354 // add the spacing for the grid on the top and the bottom;
+ − 2355 int heightMargin = 2*container->spacing();
+ − 2356
+ − 2357 // add the frame of the container
+ − 2358 int marginTop, marginBottom;
+ − 2359 container->getContentsMargins(0, &marginTop, 0, &marginBottom);
+ − 2360 heightMargin += marginTop + marginBottom;
+ − 2361
+ − 2362 //add the frame of the view
+ − 2363 view()->getContentsMargins(0, &marginTop, 0, &marginBottom);
+ − 2364 marginTop += static_cast<QAbstractScrollAreaPrivate *>(QObjectPrivate::get(view()))->top;
+ − 2365 marginBottom += static_cast<QAbstractScrollAreaPrivate *>(QObjectPrivate::get(view()))->bottom;
+ − 2366 heightMargin += marginTop + marginBottom;
+ − 2367
+ − 2368 listRect.setHeight(listRect.height() + heightMargin);
+ − 2369 }
+ − 2370
+ − 2371 // Add space for margin at top and bottom if the style wants it.
+ − 2372 if (usePopup)
+ − 2373 listRect.setHeight(listRect.height() + style->pixelMetric(QStyle::PM_MenuVMargin, &opt, this) * 2);
+ − 2374
+ − 2375 // Make sure the popup is wide enough to display its contents.
+ − 2376 if (usePopup) {
+ − 2377 const int diff = d->computeWidthHint() - width();
+ − 2378 if (diff > 0)
+ − 2379 listRect.setWidth(listRect.width() + diff);
+ − 2380 }
+ − 2381
+ − 2382 //we need to activate the layout to make sure the min/maximum size are set when the widget was not yet show
+ − 2383 container->layout()->activate();
+ − 2384 //takes account of the minimum/maximum size of the container
+ − 2385 listRect.setSize( listRect.size().expandedTo(container->minimumSize())
+ − 2386 .boundedTo(container->maximumSize()));
+ − 2387
+ − 2388 // make sure the widget fits on screen
+ − 2389 if (boundToScreen) {
+ − 2390 if (listRect.width() > screen.width() )
+ − 2391 listRect.setWidth(screen.width());
+ − 2392 if (mapToGlobal(listRect.bottomRight()).x() > screen.right()) {
+ − 2393 below.setX(screen.x() + screen.width() - listRect.width());
+ − 2394 above.setX(screen.x() + screen.width() - listRect.width());
+ − 2395 }
+ − 2396 if (mapToGlobal(listRect.topLeft()).x() < screen.x() ) {
+ − 2397 below.setX(screen.x());
+ − 2398 above.setX(screen.x());
+ − 2399 }
+ − 2400 }
+ − 2401
+ − 2402 if (usePopup) {
+ − 2403 // Position horizontally.
+ − 2404 listRect.moveLeft(above.x());
+ − 2405
+ − 2406 // Position vertically so the curently selected item lines up
+ − 2407 // with the combo box.
+ − 2408 const QRect currentItemRect = view()->visualRect(view()->currentIndex());
+ − 2409 const int offset = listRect.top() - currentItemRect.top();
+ − 2410 listRect.moveTop(above.y() + offset - listRect.top());
+ − 2411
+ − 2412
+ − 2413 // Clamp the listRect height and vertical position so we don't expand outside the
+ − 2414 // available screen geometry.This may override the vertical position, but it is more
+ − 2415 // important to show as much as possible of the popup.
+ − 2416 const int height = !boundToScreen ? listRect.height() : qMin(listRect.height(), screen.height());
+ − 2417 listRect.setHeight(height);
+ − 2418 if (boundToScreen) {
+ − 2419 if (listRect.top() < screen.top())
+ − 2420 listRect.moveTop(screen.top());
+ − 2421 if (listRect.bottom() > screen.bottom())
+ − 2422 listRect.moveBottom(screen.bottom());
+ − 2423 }
+ − 2424 } else if (!boundToScreen || listRect.height() <= belowHeight) {
+ − 2425 listRect.moveTopLeft(below);
+ − 2426 } else if (listRect.height() <= aboveHeight) {
+ − 2427 listRect.moveBottomLeft(above);
+ − 2428 } else if (belowHeight >= aboveHeight) {
+ − 2429 listRect.setHeight(belowHeight);
+ − 2430 listRect.moveTopLeft(below);
+ − 2431 } else {
+ − 2432 listRect.setHeight(aboveHeight);
+ − 2433 listRect.moveBottomLeft(above);
+ − 2434 }
+ − 2435
+ − 2436 #ifndef QT_NO_IM
+ − 2437 if (QInputContext *qic = inputContext())
+ − 2438 qic->reset();
+ − 2439 #endif
+ − 2440 QScrollBar *sb = view()->horizontalScrollBar();
+ − 2441 Qt::ScrollBarPolicy policy = view()->horizontalScrollBarPolicy();
+ − 2442 bool needHorizontalScrollBar = (policy == Qt::ScrollBarAsNeeded || policy == Qt::ScrollBarAlwaysOn)
+ − 2443 && sb->minimum() < sb->maximum();
+ − 2444 if (needHorizontalScrollBar) {
+ − 2445 listRect.adjust(0, 0, 0, sb->height());
+ − 2446 }
+ − 2447 container->setGeometry(listRect);
+ − 2448
+ − 2449 #ifndef Q_WS_MAC
+ − 2450 const bool updatesEnabled = container->updatesEnabled();
+ − 2451 #endif
+ − 2452
+ − 2453 #if defined(Q_WS_WIN) && !defined(QT_NO_EFFECTS)
+ − 2454 bool scrollDown = (listRect.topLeft() == below);
+ − 2455 if (QApplication::isEffectEnabled(Qt::UI_AnimateCombo)
+ − 2456 && !style->styleHint(QStyle::SH_ComboBox_Popup, &opt, this) && !window()->testAttribute(Qt::WA_DontShowOnScreen))
+ − 2457 qScrollEffect(container, scrollDown ? QEffects::DownScroll : QEffects::UpScroll, 150);
+ − 2458 #endif
+ − 2459
+ − 2460 // Don't disable updates on Mac OS X. Windows are displayed immediately on this platform,
+ − 2461 // which means that the window will be visible before the call to container->show() returns.
+ − 2462 // If updates are disabled at this point we'll miss our chance at painting the popup
+ − 2463 // menu before it's shown, causing flicker since the window then displays the standard gray
+ − 2464 // background.
+ − 2465 #ifndef Q_WS_MAC
+ − 2466 container->setUpdatesEnabled(false);
+ − 2467 #endif
+ − 2468
+ − 2469 container->raise();
+ − 2470 container->show();
+ − 2471 container->updateScrollers();
+ − 2472 view()->setFocus();
+ − 2473
+ − 2474 view()->scrollTo(view()->currentIndex(),
+ − 2475 style->styleHint(QStyle::SH_ComboBox_Popup, &opt, this)
+ − 2476 ? QAbstractItemView::PositionAtCenter
+ − 2477 : QAbstractItemView::EnsureVisible);
+ − 2478
+ − 2479 #ifndef Q_WS_MAC
+ − 2480 container->setUpdatesEnabled(updatesEnabled);
+ − 2481 #endif
+ − 2482
+ − 2483 container->update();
+ − 2484 #ifdef QT_KEYPAD_NAVIGATION
+ − 2485 if (QApplication::keypadNavigationEnabled())
+ − 2486 view()->setEditFocus(true);
+ − 2487 #endif
+ − 2488 }
+ − 2489
+ − 2490 /*!
+ − 2491 Hides the list of items in the combobox if it is currently visible
+ − 2492 and resets the internal state, so that if the custom pop-up was
+ − 2493 shown inside the reimplemented showPopup(), then you also need to
+ − 2494 reimplement the hidePopup() function to hide your custom pop-up
+ − 2495 and call the base class implementation to reset the internal state
+ − 2496 whenever your custom pop-up widget is hidden.
+ − 2497
+ − 2498 \sa showPopup()
+ − 2499 */
+ − 2500 void QComboBox::hidePopup()
+ − 2501 {
+ − 2502 Q_D(QComboBox);
+ − 2503 if (d->container && d->container->isVisible()) {
+ − 2504 #if !defined(QT_NO_EFFECTS)
+ − 2505 d->model->blockSignals(true);
+ − 2506 d->container->itemView()->blockSignals(true);
+ − 2507 d->container->blockSignals(true);
+ − 2508 // Flash selected/triggered item (if any).
+ − 2509 if (style()->styleHint(QStyle::SH_Menu_FlashTriggeredItem)) {
+ − 2510 QItemSelectionModel *selectionModel = view() ? view()->selectionModel() : 0;
+ − 2511 if (selectionModel && selectionModel->hasSelection()) {
+ − 2512 QEventLoop eventLoop;
+ − 2513 const QItemSelection selection = selectionModel->selection();
+ − 2514
+ − 2515 // Deselect item and wait 60 ms.
+ − 2516 selectionModel->select(selection, QItemSelectionModel::Toggle);
+ − 2517 QTimer::singleShot(60, &eventLoop, SLOT(quit()));
+ − 2518 eventLoop.exec();
+ − 2519
+ − 2520 // Select item and wait 20 ms.
+ − 2521 selectionModel->select(selection, QItemSelectionModel::Toggle);
+ − 2522 QTimer::singleShot(20, &eventLoop, SLOT(quit()));
+ − 2523 eventLoop.exec();
+ − 2524 }
+ − 2525 }
+ − 2526
+ − 2527 // Fade out.
+ − 2528 bool needFade = style()->styleHint(QStyle::SH_Menu_FadeOutOnHide);
+ − 2529 if (needFade) {
+ − 2530 #if defined(Q_WS_MAC)
+ − 2531 macWindowFade(qt_mac_window_for(d->container));
+ − 2532 #endif // Q_WS_MAC
+ − 2533 // Other platform implementations welcome :-)
+ − 2534 }
+ − 2535 d->model->blockSignals(false);
+ − 2536 d->container->itemView()->blockSignals(false);
+ − 2537 d->container->blockSignals(false);
+ − 2538
+ − 2539 if (!needFade)
+ − 2540 #endif // QT_NO_EFFECTS
+ − 2541 // Fade should implicitly hide as well ;-)
+ − 2542 d->container->hide();
+ − 2543 }
+ − 2544 #ifdef QT_KEYPAD_NAVIGATION
+ − 2545 if (QApplication::keypadNavigationEnabled() && isEditable() && hasFocus())
+ − 2546 setEditFocus(true);
+ − 2547 #endif
+ − 2548 d->_q_resetButton();
+ − 2549 }
+ − 2550
+ − 2551 /*!
+ − 2552 Clears the combobox, removing all items.
+ − 2553
+ − 2554 Note: If you have set an external model on the combobox this model
+ − 2555 will still be cleared when calling this function.
+ − 2556 */
+ − 2557 void QComboBox::clear()
+ − 2558 {
+ − 2559 Q_D(QComboBox);
+ − 2560 d->model->removeRows(0, d->model->rowCount(d->root), d->root);
+ − 2561 }
+ − 2562
+ − 2563 /*!
+ − 2564 \fn void QComboBox::clearValidator()
+ − 2565
+ − 2566 Use setValidator(0) instead.
+ − 2567 */
+ − 2568
+ − 2569 /*!
+ − 2570 Clears the contents of the line edit used for editing in the combobox.
+ − 2571 */
+ − 2572 void QComboBox::clearEditText()
+ − 2573 {
+ − 2574 Q_D(QComboBox);
+ − 2575 if (d->lineEdit)
+ − 2576 d->lineEdit->clear();
+ − 2577 }
+ − 2578
+ − 2579 /*!
+ − 2580 Sets the \a text in the combobox's text edit.
+ − 2581 */
+ − 2582 void QComboBox::setEditText(const QString &text)
+ − 2583 {
+ − 2584 Q_D(QComboBox);
+ − 2585 if (d->lineEdit)
+ − 2586 d->lineEdit->setText(text);
+ − 2587 }
+ − 2588
+ − 2589 /*!
+ − 2590 \reimp
+ − 2591 */
+ − 2592 void QComboBox::focusInEvent(QFocusEvent *e)
+ − 2593 {
+ − 2594 Q_D(QComboBox);
+ − 2595 update();
+ − 2596 if (d->lineEdit) {
+ − 2597 d->lineEdit->event(e);
+ − 2598 #ifndef QT_NO_COMPLETER
+ − 2599 if (d->lineEdit->completer())
+ − 2600 d->lineEdit->completer()->setWidget(this);
+ − 2601 #endif
+ − 2602 }
+ − 2603 }
+ − 2604
+ − 2605 /*!
+ − 2606 \reimp
+ − 2607 */
+ − 2608 void QComboBox::focusOutEvent(QFocusEvent *e)
+ − 2609 {
+ − 2610 Q_D(QComboBox);
+ − 2611 update();
+ − 2612 if (d->lineEdit)
+ − 2613 d->lineEdit->event(e);
+ − 2614 }
+ − 2615
+ − 2616 /*! \reimp */
+ − 2617 void QComboBox::changeEvent(QEvent *e)
+ − 2618 {
+ − 2619 Q_D(QComboBox);
+ − 2620 switch (e->type()) {
+ − 2621 case QEvent::StyleChange:
+ − 2622 d->updateDelegate();
+ − 2623 #ifdef Q_WS_MAC
+ − 2624 case QEvent::MacSizeChange:
+ − 2625 #endif
+ − 2626 d->sizeHint = QSize(); // invalidate size hint
+ − 2627 d->minimumSizeHint = QSize();
+ − 2628 d->updateLayoutDirection();
+ − 2629 if (d->lineEdit)
+ − 2630 d->updateLineEditGeometry();
+ − 2631 d->setLayoutItemMargins(QStyle::SE_ComboBoxLayoutItem);
+ − 2632 // ### need to update scrollers etc. as well here
+ − 2633 break;
+ − 2634 case QEvent::EnabledChange:
+ − 2635 if (!isEnabled())
+ − 2636 hidePopup();
+ − 2637 break;
+ − 2638 case QEvent::PaletteChange: {
+ − 2639 d->updateViewContainerPaletteAndOpacity();
+ − 2640 break;
+ − 2641 }
+ − 2642 case QEvent::FontChange:
+ − 2643 d->sizeHint = QSize(); // invalidate size hint
+ − 2644 d->viewContainer()->setFont(font());
+ − 2645 if (d->lineEdit)
+ − 2646 d->updateLineEditGeometry();
+ − 2647 break;
+ − 2648 default:
+ − 2649 break;
+ − 2650 }
+ − 2651 QWidget::changeEvent(e);
+ − 2652 }
+ − 2653
+ − 2654 /*!
+ − 2655 \reimp
+ − 2656 */
+ − 2657 void QComboBox::resizeEvent(QResizeEvent *)
+ − 2658 {
+ − 2659 Q_D(QComboBox);
+ − 2660 d->updateLineEditGeometry();
+ − 2661 }
+ − 2662
+ − 2663 /*!
+ − 2664 \reimp
+ − 2665 */
+ − 2666 void QComboBox::paintEvent(QPaintEvent *)
+ − 2667 {
+ − 2668 QStylePainter painter(this);
+ − 2669 painter.setPen(palette().color(QPalette::Text));
+ − 2670
+ − 2671 // draw the combobox frame, focusrect and selected etc.
+ − 2672 QStyleOptionComboBox opt;
+ − 2673 initStyleOption(&opt);
+ − 2674 painter.drawComplexControl(QStyle::CC_ComboBox, opt);
+ − 2675
+ − 2676 // draw the icon and text
+ − 2677 painter.drawControl(QStyle::CE_ComboBoxLabel, opt);
+ − 2678 }
+ − 2679
+ − 2680 /*!
+ − 2681 \reimp
+ − 2682 */
+ − 2683 void QComboBox::showEvent(QShowEvent *e)
+ − 2684 {
+ − 2685 Q_D(QComboBox);
+ − 2686 if (!d->shownOnce && d->sizeAdjustPolicy == QComboBox::AdjustToContentsOnFirstShow) {
+ − 2687 d->sizeHint = QSize();
+ − 2688 updateGeometry();
+ − 2689 }
+ − 2690 d->shownOnce = true;
+ − 2691 QWidget::showEvent(e);
+ − 2692 }
+ − 2693
+ − 2694 /*!
+ − 2695 \reimp
+ − 2696 */
+ − 2697 void QComboBox::hideEvent(QHideEvent *)
+ − 2698 {
+ − 2699 hidePopup();
+ − 2700 }
+ − 2701
+ − 2702 /*!
+ − 2703 \reimp
+ − 2704 */
+ − 2705 bool QComboBox::event(QEvent *event)
+ − 2706 {
+ − 2707 Q_D(QComboBox);
+ − 2708 switch(event->type()) {
+ − 2709 case QEvent::LayoutDirectionChange:
+ − 2710 case QEvent::ApplicationLayoutDirectionChange:
+ − 2711 d->updateLayoutDirection();
+ − 2712 d->updateLineEditGeometry();
+ − 2713 break;
+ − 2714 case QEvent::HoverEnter:
+ − 2715 case QEvent::HoverLeave:
+ − 2716 case QEvent::HoverMove:
+ − 2717 if (const QHoverEvent *he = static_cast<const QHoverEvent *>(event))
+ − 2718 d->updateHoverControl(he->pos());
+ − 2719 break;
+ − 2720 case QEvent::ShortcutOverride:
+ − 2721 if (d->lineEdit)
+ − 2722 return d->lineEdit->event(event);
+ − 2723 break;
+ − 2724 #ifdef QT_KEYPAD_NAVIGATION
+ − 2725 case QEvent::EnterEditFocus:
+ − 2726 if (!d->lineEdit)
+ − 2727 setEditFocus(false); // We never want edit focus if we are not editable
+ − 2728 else
+ − 2729 d->lineEdit->event(event); //so cursor starts
+ − 2730 break;
+ − 2731 case QEvent::LeaveEditFocus:
+ − 2732 if (d->lineEdit)
+ − 2733 d->lineEdit->event(event); //so cursor stops
+ − 2734 break;
+ − 2735 #endif
+ − 2736 default:
+ − 2737 break;
+ − 2738 }
+ − 2739 return QWidget::event(event);
+ − 2740 }
+ − 2741
+ − 2742 /*!
+ − 2743 \reimp
+ − 2744 */
+ − 2745 void QComboBox::mousePressEvent(QMouseEvent *e)
+ − 2746 {
+ − 2747 Q_D(QComboBox);
+ − 2748 QStyleOptionComboBox opt;
+ − 2749 initStyleOption(&opt);
+ − 2750 QStyle::SubControl sc = style()->hitTestComplexControl(QStyle::CC_ComboBox, &opt, e->pos(),
+ − 2751 this);
+ − 2752 if (e->button() == Qt::LeftButton && (sc == QStyle::SC_ComboBoxArrow || !isEditable())
+ − 2753 && !d->viewContainer()->isVisible()) {
+ − 2754 if (sc == QStyle::SC_ComboBoxArrow)
+ − 2755 d->updateArrow(QStyle::State_Sunken);
+ − 2756 #ifdef QT_KEYPAD_NAVIGATION
+ − 2757 if (!d->lineEdit) {
+ − 2758 #endif
+ − 2759 // We've restricted the next couple of lines, because by not calling
+ − 2760 // viewContainer(), we avoid creating the QComboBoxPrivateContainer.
+ − 2761 d->viewContainer()->blockMouseReleaseTimer.start(QApplication::doubleClickInterval());
+ − 2762 d->viewContainer()->initialClickPosition = mapToGlobal(e->pos());
+ − 2763 #ifdef QT_KEYPAD_NAVIGATION
+ − 2764 }
+ − 2765 #endif
+ − 2766 showPopup();
+ − 2767 } else {
+ − 2768 #ifdef QT_KEYPAD_NAVIGATION
+ − 2769 if (QApplication::keypadNavigationEnabled() && sc == QStyle::SC_ComboBoxEditField && d->lineEdit) {
+ − 2770 d->lineEdit->event(e); //so lineedit can move cursor, etc
+ − 2771 return;
+ − 2772 }
+ − 2773 #endif
+ − 2774 QWidget::mousePressEvent(e);
+ − 2775 }
+ − 2776 }
+ − 2777
+ − 2778 /*!
+ − 2779 \reimp
+ − 2780 */
+ − 2781 void QComboBox::mouseReleaseEvent(QMouseEvent *e)
+ − 2782 {
+ − 2783 Q_D(QComboBox);
+ − 2784 Q_UNUSED(e);
+ − 2785 d->updateArrow(QStyle::State_None);
+ − 2786 }
+ − 2787
+ − 2788 /*!
+ − 2789 \reimp
+ − 2790 */
+ − 2791 void QComboBox::keyPressEvent(QKeyEvent *e)
+ − 2792 {
+ − 2793 Q_D(QComboBox);
+ − 2794
+ − 2795 #ifndef QT_NO_COMPLETER
+ − 2796 if (d->lineEdit
+ − 2797 && d->lineEdit->completer()
+ − 2798 && d->lineEdit->completer()->popup()
+ − 2799 && d->lineEdit->completer()->popup()->isVisible()) {
+ − 2800 // provide same autocompletion support as line edit
+ − 2801 d->lineEdit->event(e);
+ − 2802 return;
+ − 2803 }
+ − 2804 #endif
+ − 2805
+ − 2806 enum Move { NoMove=0 , MoveUp , MoveDown , MoveFirst , MoveLast};
+ − 2807
+ − 2808 Move move = NoMove;
+ − 2809 int newIndex = currentIndex();
+ − 2810 switch (e->key()) {
+ − 2811 case Qt::Key_Up:
+ − 2812 if (e->modifiers() & Qt::ControlModifier)
+ − 2813 break; // pass to line edit for auto completion
+ − 2814 case Qt::Key_PageUp:
+ − 2815 #ifdef QT_KEYPAD_NAVIGATION
+ − 2816 if (QApplication::keypadNavigationEnabled())
+ − 2817 e->ignore();
+ − 2818 else
+ − 2819 #endif
+ − 2820 move = MoveUp;
+ − 2821 break;
+ − 2822 case Qt::Key_Down:
+ − 2823 if (e->modifiers() & Qt::AltModifier) {
+ − 2824 showPopup();
+ − 2825 return;
+ − 2826 } else if (e->modifiers() & Qt::ControlModifier)
+ − 2827 break; // pass to line edit for auto completion
+ − 2828 // fall through
+ − 2829 case Qt::Key_PageDown:
+ − 2830 #ifdef QT_KEYPAD_NAVIGATION
+ − 2831 if (QApplication::keypadNavigationEnabled())
+ − 2832 e->ignore();
+ − 2833 else
+ − 2834 #endif
+ − 2835 move = MoveDown;
+ − 2836 break;
+ − 2837 case Qt::Key_Home:
+ − 2838 if (!d->lineEdit)
+ − 2839 move = MoveFirst;
+ − 2840 break;
+ − 2841 case Qt::Key_End:
+ − 2842 if (!d->lineEdit)
+ − 2843 move = MoveLast;
+ − 2844 break;
+ − 2845 case Qt::Key_F4:
+ − 2846 if (!e->modifiers()) {
+ − 2847 showPopup();
+ − 2848 return;
+ − 2849 }
+ − 2850 break;
+ − 2851 case Qt::Key_Space:
+ − 2852 if (!d->lineEdit) {
+ − 2853 showPopup();
+ − 2854 return;
+ − 2855 }
+ − 2856 case Qt::Key_Enter:
+ − 2857 case Qt::Key_Return:
+ − 2858 case Qt::Key_Escape:
+ − 2859 if (!d->lineEdit)
+ − 2860 e->ignore();
+ − 2861 break;
+ − 2862 #ifdef QT_KEYPAD_NAVIGATION
+ − 2863 case Qt::Key_Select:
+ − 2864 if (QApplication::keypadNavigationEnabled()
+ − 2865 && (!hasEditFocus() || !d->lineEdit)) {
+ − 2866 showPopup();
+ − 2867 return;
+ − 2868 }
+ − 2869 break;
+ − 2870 case Qt::Key_Left:
+ − 2871 case Qt::Key_Right:
+ − 2872 if (QApplication::keypadNavigationEnabled() && !hasEditFocus())
+ − 2873 e->ignore();
+ − 2874 break;
+ − 2875 case Qt::Key_Back:
+ − 2876 if (QApplication::keypadNavigationEnabled()) {
+ − 2877 if (!hasEditFocus() || !d->lineEdit)
+ − 2878 e->ignore();
+ − 2879 } else {
+ − 2880 e->ignore(); // let the surounding dialog have it
+ − 2881 }
+ − 2882 break;
+ − 2883 #endif
+ − 2884 default:
+ − 2885 if (!d->lineEdit) {
+ − 2886 if (!e->text().isEmpty())
+ − 2887 d->keyboardSearchString(e->text());
+ − 2888 else
+ − 2889 e->ignore();
+ − 2890 }
+ − 2891 }
+ − 2892
+ − 2893 if (move != NoMove) {
+ − 2894 e->accept();
+ − 2895 switch (move) {
+ − 2896 case MoveFirst:
+ − 2897 newIndex = -1;
+ − 2898 case MoveDown:
+ − 2899 newIndex++;
+ − 2900 while ((newIndex < count()) && !(d->model->flags(d->model->index(newIndex,d->modelColumn,d->root)) & Qt::ItemIsEnabled))
+ − 2901 newIndex++;
+ − 2902 break;
+ − 2903 case MoveLast:
+ − 2904 newIndex = count();
+ − 2905 case MoveUp:
+ − 2906 newIndex--;
+ − 2907 while ((newIndex >= 0) && !(d->model->flags(d->model->index(newIndex,d->modelColumn,d->root)) & Qt::ItemIsEnabled))
+ − 2908 newIndex--;
+ − 2909 break;
+ − 2910 default:
+ − 2911 e->ignore();
+ − 2912 break;
+ − 2913 }
+ − 2914
+ − 2915 if (newIndex >= 0 && newIndex < count() && newIndex != currentIndex()) {
+ − 2916 setCurrentIndex(newIndex);
+ − 2917 d->emitActivated(d->currentIndex);
+ − 2918 }
+ − 2919 } else if (d->lineEdit) {
+ − 2920 d->lineEdit->event(e);
+ − 2921 }
+ − 2922 }
+ − 2923
+ − 2924
+ − 2925 /*!
+ − 2926 \reimp
+ − 2927 */
+ − 2928 void QComboBox::keyReleaseEvent(QKeyEvent *e)
+ − 2929 {
+ − 2930 Q_D(QComboBox);
+ − 2931 if (d->lineEdit)
+ − 2932 d->lineEdit->event(e);
+ − 2933 }
+ − 2934
+ − 2935 /*!
+ − 2936 \reimp
+ − 2937 */
+ − 2938 #ifndef QT_NO_WHEELEVENT
+ − 2939 void QComboBox::wheelEvent(QWheelEvent *e)
+ − 2940 {
+ − 2941 Q_D(QComboBox);
+ − 2942 if (!d->viewContainer()->isVisible()) {
+ − 2943 int newIndex = currentIndex();
+ − 2944
+ − 2945 if (e->delta() > 0) {
+ − 2946 newIndex--;
+ − 2947 while ((newIndex >= 0) && !(d->model->flags(d->model->index(newIndex,d->modelColumn,d->root)) & Qt::ItemIsEnabled))
+ − 2948 newIndex--;
+ − 2949 } else {
+ − 2950 newIndex++;
+ − 2951 while ((newIndex < count()) && !(d->model->flags(d->model->index(newIndex,d->modelColumn,d->root)) & Qt::ItemIsEnabled))
+ − 2952 newIndex++;
+ − 2953 }
+ − 2954
+ − 2955 if (newIndex >= 0 && newIndex < count() && newIndex != currentIndex()) {
+ − 2956 setCurrentIndex(newIndex);
+ − 2957 d->emitActivated(d->currentIndex);
+ − 2958 }
+ − 2959 e->accept();
+ − 2960 }
+ − 2961 }
+ − 2962 #endif
+ − 2963
+ − 2964 #ifndef QT_NO_CONTEXTMENU
+ − 2965 /*!
+ − 2966 \reimp
+ − 2967 */
+ − 2968 void QComboBox::contextMenuEvent(QContextMenuEvent *e)
+ − 2969 {
+ − 2970 Q_D(QComboBox);
+ − 2971 if (d->lineEdit) {
+ − 2972 Qt::ContextMenuPolicy p = d->lineEdit->contextMenuPolicy();
+ − 2973 d->lineEdit->setContextMenuPolicy(Qt::DefaultContextMenu);
+ − 2974 d->lineEdit->event(e);
+ − 2975 d->lineEdit->setContextMenuPolicy(p);
+ − 2976 }
+ − 2977 }
+ − 2978 #endif // QT_NO_CONTEXTMENU
+ − 2979
+ − 2980 void QComboBoxPrivate::keyboardSearchString(const QString &text)
+ − 2981 {
+ − 2982 // use keyboardSearch from the listView so we do not duplicate code
+ − 2983 QAbstractItemView *view = viewContainer()->itemView();
+ − 2984 view->setCurrentIndex(currentIndex);
+ − 2985 int currentRow = view->currentIndex().row();
+ − 2986 view->keyboardSearch(text);
+ − 2987 if (currentRow != view->currentIndex().row()) {
+ − 2988 setCurrentIndex(view->currentIndex());
+ − 2989 emitActivated(currentIndex);
+ − 2990 }
+ − 2991 }
+ − 2992
+ − 2993 void QComboBoxPrivate::modelChanged()
+ − 2994 {
+ − 2995 Q_Q(QComboBox);
+ − 2996
+ − 2997 if (sizeAdjustPolicy == QComboBox::AdjustToContents) {
+ − 2998 sizeHint = QSize();
+ − 2999 adjustComboBoxSize();
+ − 3000 q->updateGeometry();
+ − 3001 }
+ − 3002 }
+ − 3003
+ − 3004 /*!
+ − 3005 \reimp
+ − 3006 */
+ − 3007 void QComboBox::inputMethodEvent(QInputMethodEvent *e)
+ − 3008 {
+ − 3009 Q_D(QComboBox);
+ − 3010 if (d->lineEdit) {
+ − 3011 d->lineEdit->event(e);
+ − 3012 } else {
+ − 3013 if (!e->commitString().isEmpty())
+ − 3014 d->keyboardSearchString(e->commitString());
+ − 3015 else
+ − 3016 e->ignore();
+ − 3017 }
+ − 3018 }
+ − 3019
+ − 3020 /*!
+ − 3021 \reimp
+ − 3022 */
+ − 3023 QVariant QComboBox::inputMethodQuery(Qt::InputMethodQuery query) const
+ − 3024 {
+ − 3025 Q_D(const QComboBox);
+ − 3026 if (d->lineEdit)
+ − 3027 return d->lineEdit->inputMethodQuery(query);
+ − 3028 return QWidget::inputMethodQuery(query);
+ − 3029 }
+ − 3030
+ − 3031 /*!
+ − 3032 \fn bool QComboBox::editable() const
+ − 3033
+ − 3034 Use isEditable() instead.
+ − 3035 */
+ − 3036
+ − 3037 /*!
+ − 3038 \fn void QComboBox::insertItem(const QPixmap &pixmap, int index)
+ − 3039
+ − 3040 Use an insertItem() function that takes a QIcon instead, for
+ − 3041 example, insertItem(index, QIcon(pixmap)).
+ − 3042 */
+ − 3043
+ − 3044 /*!
+ − 3045 \fn void QComboBox::insertItem(const QPixmap &pixmap, const QString &text, int index)
+ − 3046
+ − 3047 Use an insertItem() function that takes a QIcon instead, for
+ − 3048 example, insertItem(index, QIcon(pixmap), text).
+ − 3049
+ − 3050 \sa insertItems()
+ − 3051 */
+ − 3052
+ − 3053 /*!
+ − 3054 \fn void QComboBox::changeItem(const QString &text, int index)
+ − 3055
+ − 3056 Use setItemText() instead.
+ − 3057 */
+ − 3058
+ − 3059 /*!
+ − 3060 \fn void QComboBox::changeItem(const QPixmap &pixmap, int index)
+ − 3061
+ − 3062 Use setItemIcon() instead, for example,
+ − 3063 setItemIcon(index, QIcon(pixmap)).
+ − 3064 */
+ − 3065
+ − 3066 /*!
+ − 3067 \fn void QComboBox::changeItem(const QPixmap &pixmap, const QString &text, int index)
+ − 3068
+ − 3069 Use setItem() instead, for example, setItem(index, QIcon(pixmap),text).
+ − 3070 */
+ − 3071
+ − 3072 /*!
+ − 3073 \fn void QComboBox::addItem(const QString &text, const QVariant &userData)
+ − 3074
+ − 3075 Adds an item to the combobox with the given \a text, and
+ − 3076 containing the specified \a userData (stored in the Qt::UserRole).
+ − 3077 The item is appended to the list of existing items.
+ − 3078 */
+ − 3079
+ − 3080 /*!
+ − 3081 \fn void QComboBox::addItem(const QIcon &icon, const QString &text,
+ − 3082 const QVariant &userData)
+ − 3083
+ − 3084 Adds an item to the combobox with the given \a icon and \a text,
+ − 3085 and containing the specified \a userData (stored in the
+ − 3086 Qt::UserRole). The item is appended to the list of existing items.
+ − 3087 */
+ − 3088
+ − 3089 /*!
+ − 3090 \fn void QComboBox::addItems(const QStringList &texts)
+ − 3091
+ − 3092 Adds each of the strings in the given \a texts to the combobox. Each item
+ − 3093 is appended to the list of existing items in turn.
+ − 3094 */
+ − 3095
+ − 3096 /*!
+ − 3097 \fn void QComboBox::editTextChanged(const QString &text)
+ − 3098
+ − 3099 This signal is emitted when the text in the combobox's line edit
+ − 3100 widget is changed. The new text is specified by \a text.
+ − 3101 */
+ − 3102
+ − 3103 /*!
+ − 3104 \fn QComboBox::InsertPolicy QComboBox::insertionPolicy() const
+ − 3105 \compat
+ − 3106
+ − 3107 Use QComboBox::insertPolicy instead.
+ − 3108 */
+ − 3109
+ − 3110 /*!
+ − 3111 \fn void QComboBox::setInsertionPolicy(InsertPolicy policy)
+ − 3112 \compat
+ − 3113
+ − 3114 Use QComboBox::insertPolicy instead.
+ − 3115 */
+ − 3116
+ − 3117 /*!
+ − 3118 \fn void QComboBox::setCurrentText(const QString &text)
+ − 3119 \compat
+ − 3120
+ − 3121 Use setItemText() instead.
+ − 3122
+ − 3123 \sa currentIndex()
+ − 3124 */
+ − 3125
+ − 3126 /*!
+ − 3127 \fn QString QComboBox::text(int index) const
+ − 3128 \compat
+ − 3129
+ − 3130 Use itemText() instead.
+ − 3131 */
+ − 3132
+ − 3133 /*!
+ − 3134 \fn QPixmap QComboBox::pixmap(int index) const
+ − 3135 \compat
+ − 3136
+ − 3137 Use itemIcon() instead.
+ − 3138 */
+ − 3139
+ − 3140 /*!
+ − 3141 \fn void QComboBox::insertStringList(const QStringList &list, int index)
+ − 3142 \compat
+ − 3143
+ − 3144 Use insertItems() instead.
+ − 3145 */
+ − 3146
+ − 3147 /*!
+ − 3148 \fn void QComboBox::insertItem(const QString &text, int index)
+ − 3149 \compat
+ − 3150 */
+ − 3151
+ − 3152 /*!
+ − 3153 \fn void QComboBox::clearEdit()
+ − 3154 \compat
+ − 3155
+ − 3156 Use clearEditText() instead.
+ − 3157 */
+ − 3158
+ − 3159
+ − 3160 /*!
+ − 3161 \property QComboBox::frame
+ − 3162 \brief whether the combo box draws itself with a frame
+ − 3163
+ − 3164
+ − 3165 If enabled (the default) the combo box draws itself inside a
+ − 3166 frame, otherwise the combo box draws itself without any frame.
+ − 3167 */
+ − 3168 bool QComboBox::hasFrame() const
+ − 3169 {
+ − 3170 Q_D(const QComboBox);
+ − 3171 return d->frame;
+ − 3172 }
+ − 3173
+ − 3174
+ − 3175 void QComboBox::setFrame(bool enable)
+ − 3176 {
+ − 3177 Q_D(QComboBox);
+ − 3178 d->frame = enable;
+ − 3179 update();
+ − 3180 updateGeometry();
+ − 3181 }
+ − 3182
+ − 3183 /*!
+ − 3184 \property QComboBox::modelColumn
+ − 3185 \brief the column in the model that is visible.
+ − 3186
+ − 3187 If set prior to populating the combo box, the pop-up view will
+ − 3188 not be affected and will show the first column (using this property's
+ − 3189 default value).
+ − 3190
+ − 3191 By default, this property has a value of 0.
+ − 3192 */
+ − 3193 int QComboBox::modelColumn() const
+ − 3194 {
+ − 3195 Q_D(const QComboBox);
+ − 3196 return d->modelColumn;
+ − 3197 }
+ − 3198
+ − 3199 void QComboBox::setModelColumn(int visibleColumn)
+ − 3200 {
+ − 3201 Q_D(QComboBox);
+ − 3202 d->modelColumn = visibleColumn;
+ − 3203 QListView *lv = qobject_cast<QListView *>(d->viewContainer()->itemView());
+ − 3204 if (lv)
+ − 3205 lv->setModelColumn(visibleColumn);
+ − 3206 #ifndef QT_NO_COMPLETER
+ − 3207 if (d->lineEdit && d->lineEdit->completer()
+ − 3208 && d->lineEdit->completer() == d->completer)
+ − 3209 d->lineEdit->completer()->setCompletionColumn(visibleColumn);
+ − 3210 #endif
+ − 3211 setCurrentIndex(currentIndex()); //update the text to the text of the new column;
+ − 3212 }
+ − 3213
+ − 3214 /*!
+ − 3215 \fn int QComboBox::currentItem() const
+ − 3216
+ − 3217 Use currentIndex() instead.
+ − 3218 */
+ − 3219
+ − 3220 /*!
+ − 3221 \fn void QComboBox::setCurrentItem(int)
+ − 3222
+ − 3223 Use setCurrentIndex(int) instead.
+ − 3224 */
+ − 3225
+ − 3226 /*!
+ − 3227 \fn void QComboBox::popup()
+ − 3228
+ − 3229 Use showPopup() instead.
+ − 3230 */
+ − 3231
+ − 3232 /*!
+ − 3233 \fn void QComboBox::textChanged(const QString &text)
+ − 3234
+ − 3235 Use the editTextChanged(const QString &text) signal instead.
+ − 3236 */
+ − 3237
+ − 3238 /*!
+ − 3239 \typedef QComboBox::Policy
+ − 3240 \compat
+ − 3241
+ − 3242 Use QComboBox::InsertPolicy instead.
+ − 3243 */
+ − 3244
+ − 3245 QT_END_NAMESPACE
+ − 3246
+ − 3247 #include "moc_qcombobox.cpp"
+ − 3248
+ − 3249 #endif // QT_NO_COMBOBOX