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Diffstat (limited to 'src/gui/widgets/qtabbar.cpp')
| -rw-r--r-- | src/gui/widgets/qtabbar.cpp | 2376 |
1 files changed, 0 insertions, 2376 deletions
diff --git a/src/gui/widgets/qtabbar.cpp b/src/gui/widgets/qtabbar.cpp deleted file mode 100644 index c5d0892122..0000000000 --- a/src/gui/widgets/qtabbar.cpp +++ /dev/null @@ -1,2376 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies). -** All rights reserved. -** Contact: Nokia Corporation (qt-info@nokia.com) -** -** This file is part of the QtGui module of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:LGPL$ -** No Commercial Usage -** This file contains pre-release code and may not be distributed. -** You may use this file in accordance with the terms and conditions -** contained in the Technology Preview License Agreement accompanying -** this package. -** -** GNU Lesser General Public License Usage -** Alternatively, this file may be used under the terms of the GNU Lesser -** General Public License version 2.1 as published by the Free Software -** Foundation and appearing in the file LICENSE.LGPL included in the -** packaging of this file. Please review the following information to -** ensure the GNU Lesser General Public License version 2.1 requirements -** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. -** -** In addition, as a special exception, Nokia gives you certain additional -** rights. These rights are described in the Nokia Qt LGPL Exception -** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. -** -** If you have questions regarding the use of this file, please contact -** Nokia at qt-info@nokia.com. -** -** -** -** -** -** -** -** -** $QT_END_LICENSE$ -** -****************************************************************************/ - -#include "private/qlayoutengine_p.h" -#include "qabstractitemdelegate.h" -#include "qapplication.h" -#include "qbitmap.h" -#include "qcursor.h" -#include "qevent.h" -#include "qpainter.h" -#include "qstyle.h" -#include "qstyleoption.h" -#include "qstylepainter.h" -#include "qtabwidget.h" -#include "qtooltip.h" -#include "qwhatsthis.h" -#include "private/qtextengine_p.h" -#ifndef QT_NO_ACCESSIBILITY -#include "qaccessible.h" -#endif - -#include "qdebug.h" -#include "private/qtabbar_p.h" - -#ifndef QT_NO_TABBAR - -#ifdef Q_WS_MAC -#include <private/qt_mac_p.h> -#include <private/qt_cocoa_helpers_mac_p.h> -#endif - -#ifndef QT_NO_STYLE_S60 -#include "qs60style.h" -#endif - -QT_BEGIN_NAMESPACE - - -inline static bool verticalTabs(QTabBar::Shape shape) -{ - return shape == QTabBar::RoundedWest - || shape == QTabBar::RoundedEast - || shape == QTabBar::TriangularWest - || shape == QTabBar::TriangularEast; -} - -void QTabBarPrivate::updateMacBorderMetrics() -{ -#if (defined Q_WS_MAC) && (MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_5) - if (QSysInfo::MacintoshVersion >= QSysInfo::MV_10_5) { - Q_Q(QTabBar); - ::HIContentBorderMetrics metrics; - - // TODO: get metrics to preserve the bottom value - // TODO: test tab bar position - - OSWindowRef window = qt_mac_window_for(q); - - // push base line separator down to the client are so we can paint over it (Carbon) - metrics.top = (documentMode && q->isVisible()) ? 1 : 0; - metrics.bottom = 0; - metrics.left = 0; - metrics.right = 0; - qt_mac_updateContentBorderMetricts(window, metrics); -#if QT_MAC_USE_COCOA - // In Cocoa we need to keep track of the drawRect method. - // If documentMode is enabled we need to change it, unless - // a toolbar is present. - // Notice that all the information is kept in the window, - // that's why we get the private widget for it instead of - // the private widget for this widget. - QWidgetPrivate *privateWidget = qt_widget_private(q->window()); - if(privateWidget) - privateWidget->changeMethods = documentMode; - // Since in Cocoa there is no simple way to remove the baseline, so we just ask the - // top level to do the magic for us. - privateWidget->syncUnifiedMode(); -#endif // QT_MAC_USE_COCOA - } -#endif -} - -/*! - Initialize \a option with the values from the tab at \a tabIndex. This method - is useful for subclasses when they need a QStyleOptionTab, QStyleOptionTabV2, - or QStyleOptionTabV3 but don't want to fill in all the information themselves. - This function will check the version of the QStyleOptionTab and fill in the - additional values for a QStyleOptionTabV2 and QStyleOptionTabV3. - - \sa QStyleOption::initFrom() QTabWidget::initStyleOption() -*/ -void QTabBar::initStyleOption(QStyleOptionTab *option, int tabIndex) const -{ - Q_D(const QTabBar); - int totalTabs = d->tabList.size(); - - if (!option || (tabIndex < 0 || tabIndex >= totalTabs)) - return; - - const QTabBarPrivate::Tab &tab = d->tabList.at(tabIndex); - option->initFrom(this); - option->state &= ~(QStyle::State_HasFocus | QStyle::State_MouseOver); - option->rect = tabRect(tabIndex); - bool isCurrent = tabIndex == d->currentIndex; - option->row = 0; - if (tabIndex == d->pressedIndex) - option->state |= QStyle::State_Sunken; - if (isCurrent) - option->state |= QStyle::State_Selected; - if (isCurrent && hasFocus()) - option->state |= QStyle::State_HasFocus; - if (!tab.enabled) - option->state &= ~QStyle::State_Enabled; - if (isActiveWindow()) - option->state |= QStyle::State_Active; - if (!d->dragInProgress && option->rect == d->hoverRect) - option->state |= QStyle::State_MouseOver; - option->shape = d->shape; - option->text = tab.text; - - if (tab.textColor.isValid()) - option->palette.setColor(foregroundRole(), tab.textColor); - - option->icon = tab.icon; - if (QStyleOptionTabV2 *optionV2 = qstyleoption_cast<QStyleOptionTabV2 *>(option)) - optionV2->iconSize = iconSize(); // Will get the default value then. - - if (QStyleOptionTabV3 *optionV3 = qstyleoption_cast<QStyleOptionTabV3 *>(option)) { - optionV3->leftButtonSize = tab.leftWidget ? tab.leftWidget->size() : QSize(); - optionV3->rightButtonSize = tab.rightWidget ? tab.rightWidget->size() : QSize(); - optionV3->documentMode = d->documentMode; - } - - if (tabIndex > 0 && tabIndex - 1 == d->currentIndex) - option->selectedPosition = QStyleOptionTab::PreviousIsSelected; - else if (tabIndex < totalTabs - 1 && tabIndex + 1 == d->currentIndex) - option->selectedPosition = QStyleOptionTab::NextIsSelected; - else - option->selectedPosition = QStyleOptionTab::NotAdjacent; - - bool paintBeginning = (tabIndex == 0) || (d->dragInProgress && tabIndex == d->pressedIndex + 1); - bool paintEnd = (tabIndex == totalTabs - 1) || (d->dragInProgress && tabIndex == d->pressedIndex - 1); - if (paintBeginning) { - if (paintEnd) - option->position = QStyleOptionTab::OnlyOneTab; - else - option->position = QStyleOptionTab::Beginning; - } else if (paintEnd) { - option->position = QStyleOptionTab::End; - } else { - option->position = QStyleOptionTab::Middle; - } - -#ifndef QT_NO_TABWIDGET - if (const QTabWidget *tw = qobject_cast<const QTabWidget *>(parentWidget())) { - if (tw->cornerWidget(Qt::TopLeftCorner) || tw->cornerWidget(Qt::BottomLeftCorner)) - option->cornerWidgets |= QStyleOptionTab::LeftCornerWidget; - if (tw->cornerWidget(Qt::TopRightCorner) || tw->cornerWidget(Qt::BottomRightCorner)) - option->cornerWidgets |= QStyleOptionTab::RightCornerWidget; - } -#endif - - QRect textRect = style()->subElementRect(QStyle::SE_TabBarTabText, option, this); - option->text = fontMetrics().elidedText(option->text, d->elideMode, textRect.width(), - Qt::TextShowMnemonic); -} - -/*! - \class QTabBar - \brief The QTabBar class provides a tab bar, e.g. for use in tabbed dialogs. - - \ingroup basicwidgets - - - QTabBar is straightforward to use; it draws the tabs using one of - the predefined \link QTabBar::Shape shapes\endlink, and emits a - signal when a tab is selected. It can be subclassed to tailor the - look and feel. Qt also provides a ready-made \l{QTabWidget}. - - Each tab has a tabText(), an optional tabIcon(), an optional - tabToolTip(), optional tabWhatsThis() and optional tabData(). - The tabs's attributes can be changed with setTabText(), setTabIcon(), - setTabToolTip(), setTabWhatsThis and setTabData(). Each tabs can be - enabled or disabled individually with setTabEnabled(). - - Each tab can display text in a distinct color. The current text color - for a tab can be found with the tabTextColor() function. Set the text - color for a particular tab with setTabTextColor(). - - Tabs are added using addTab(), or inserted at particular positions - using insertTab(). The total number of tabs is given by - count(). Tabs can be removed from the tab bar with - removeTab(). Combining removeTab() and insertTab() allows you to - move tabs to different positions. - - The \l shape property defines the tabs' appearance. The choice of - shape is a matter of taste, although tab dialogs (for preferences - and similar) invariably use \l RoundedNorth. - Tab controls in windows other than dialogs almost - always use either \l RoundedSouth or \l TriangularSouth. Many - spreadsheets and other tab controls in which all the pages are - essentially similar use \l TriangularSouth, whereas \l - RoundedSouth is used mostly when the pages are different (e.g. a - multi-page tool palette). The default in QTabBar is \l - RoundedNorth. - - The most important part of QTabBar's API is the currentChanged() - signal. This is emitted whenever the current tab changes (even at - startup, when the current tab changes from 'none'). There is also - a slot, setCurrentIndex(), which can be used to select a tab - programmatically. The function currentIndex() returns the index of - the current tab, \l count holds the number of tabs. - - QTabBar creates automatic mnemonic keys in the manner of QAbstractButton; - e.g. if a tab's label is "\&Graphics", Alt+G becomes a shortcut - key for switching to that tab. - - The following virtual functions may need to be reimplemented in - order to tailor the look and feel or store extra data with each - tab: - - \list - \i tabSizeHint() calcuates the size of a tab. - \i tabInserted() notifies that a new tab was added. - \i tabRemoved() notifies that a tab was removed. - \i tabLayoutChange() notifies that the tabs have been re-laid out. - \i paintEvent() paints all tabs. - \endlist - - For subclasses, you might also need the tabRect() functions which - returns the visual geometry of a single tab. - - \table 100% - \row \o \inlineimage plastique-tabbar.png Screenshot of a Plastique style tab bar - \o A tab bar shown in the Plastique widget style. - \row \o \inlineimage plastique-tabbar-truncated.png Screenshot of a truncated Plastique tab bar - \o A truncated tab bar shown in the Plastique widget style. - \endtable - - \sa QTabWidget -*/ - -/*! - \enum QTabBar::Shape - - This enum type lists the built-in shapes supported by QTabBar. Treat these - as hints as some styles may not render some of the shapes. However, - position should be honored. - - \value RoundedNorth The normal rounded look above the pages - - \value RoundedSouth The normal rounded look below the pages - - \value RoundedWest The normal rounded look on the left side of the pages - - \value RoundedEast The normal rounded look on the right side the pages - - \value TriangularNorth Triangular tabs above the pages. - - \value TriangularSouth Triangular tabs similar to those used in - the Excel spreadsheet, for example - - \value TriangularWest Triangular tabs on the left of the pages. - - \value TriangularEast Triangular tabs on the right of the pages. - \omitvalue RoundedAbove - \omitvalue RoundedBelow - \omitvalue TriangularAbove - \omitvalue TriangularBelow -*/ - -/*! - \fn void QTabBar::currentChanged(int index) - - This signal is emitted when the tab bar's current tab changes. The - new current has the given \a index, or -1 if there isn't a new one - (for example, if there are no tab in the QTabBar) -*/ - -/*! - \fn void QTabBar::tabCloseRequested(int index) - \since 4.5 - - This signal is emitted when the close button on a tab is clicked. - The \a index is the index that should be removed. - - \sa setTabsClosable() -*/ - -/*! - \fn void QTabBar::tabMoved(int from, int to) - \since 4.5 - - This signal is emitted when the tab has moved the tab - at index position \a from to index position \a to. - - note: QTabWidget will automatically move the page when - this signal is emitted from its tab bar. - - \sa moveTab() -*/ - -int QTabBarPrivate::extraWidth() const -{ - Q_Q(const QTabBar); - return 2 * qMax(q->style()->pixelMetric(QStyle::PM_TabBarScrollButtonWidth, 0, q), - QApplication::globalStrut().width()); -} - -void QTabBarPrivate::init() -{ - Q_Q(QTabBar); - leftB = new QToolButton(q); - leftB->setAutoRepeat(true); - QObject::connect(leftB, SIGNAL(clicked()), q, SLOT(_q_scrollTabs())); - leftB->hide(); - rightB = new QToolButton(q); - rightB->setAutoRepeat(true); - QObject::connect(rightB, SIGNAL(clicked()), q, SLOT(_q_scrollTabs())); - rightB->hide(); -#ifdef QT_KEYPAD_NAVIGATION - if (QApplication::keypadNavigationEnabled()) { - leftB->setFocusPolicy(Qt::NoFocus); - rightB->setFocusPolicy(Qt::NoFocus); - q->setFocusPolicy(Qt::NoFocus); - } else -#endif - q->setFocusPolicy(Qt::TabFocus); - q->setSizePolicy(QSizePolicy::Preferred, QSizePolicy::Fixed); - elideMode = Qt::TextElideMode(q->style()->styleHint(QStyle::SH_TabBar_ElideMode, 0, q)); - useScrollButtons = !q->style()->styleHint(QStyle::SH_TabBar_PreferNoArrows, 0, q); -} - -QTabBarPrivate::Tab *QTabBarPrivate::at(int index) -{ - return validIndex(index)?&tabList[index]:0; -} - -const QTabBarPrivate::Tab *QTabBarPrivate::at(int index) const -{ - return validIndex(index)?&tabList[index]:0; -} - -int QTabBarPrivate::indexAtPos(const QPoint &p) const -{ - Q_Q(const QTabBar); - if (q->tabRect(currentIndex).contains(p)) - return currentIndex; - for (int i = 0; i < tabList.count(); ++i) - if (tabList.at(i).enabled && q->tabRect(i).contains(p)) - return i; - return -1; -} - -void QTabBarPrivate::layoutTabs() -{ - Q_Q(QTabBar); - scrollOffset = 0; - layoutDirty = false; - QSize size = q->size(); - int last, available; - int maxExtent; - int i; - bool vertTabs = verticalTabs(shape); - int tabChainIndex = 0; - - Qt::Alignment tabAlignment = Qt::Alignment(q->style()->styleHint(QStyle::SH_TabBar_Alignment, 0, q)); - QVector<QLayoutStruct> tabChain(tabList.count() + 2); - - // We put an empty item at the front and back and set its expansive attribute - // depending on tabAlignment. - tabChain[tabChainIndex].init(); - tabChain[tabChainIndex].expansive = (tabAlignment != Qt::AlignLeft) - && (tabAlignment != Qt::AlignJustify); - tabChain[tabChainIndex].empty = true; - ++tabChainIndex; - - // We now go through our list of tabs and set the minimum size and the size hint - // This will allow us to elide text if necessary. Since we don't set - // a maximum size, tabs will EXPAND to fill up the empty space. - // Since tab widget is rather *ahem* strict about keeping the geometry of the - // tab bar to its absolute minimum, this won't bleed through, but will show up - // if you use tab bar on its own (a.k.a. not a bug, but a feature). - // Update: if expanding is false, we DO set a maximum size to prevent the tabs - // being wider than necessary. - if (!vertTabs) { - int minx = 0; - int x = 0; - int maxHeight = 0; - for (i = 0; i < tabList.count(); ++i, ++tabChainIndex) { - QSize sz = q->tabSizeHint(i); - tabList[i].maxRect = QRect(x, 0, sz.width(), sz.height()); - x += sz.width(); - maxHeight = qMax(maxHeight, sz.height()); - sz = minimumTabSizeHint(i); - tabList[i].minRect = QRect(minx, 0, sz.width(), sz.height()); - minx += sz.width(); - tabChain[tabChainIndex].init(); - tabChain[tabChainIndex].sizeHint = tabList.at(i).maxRect.width(); - tabChain[tabChainIndex].minimumSize = sz.width(); - tabChain[tabChainIndex].empty = false; - tabChain[tabChainIndex].expansive = true; - - if (!expanding) - tabChain[tabChainIndex].maximumSize = tabChain[tabChainIndex].sizeHint; - } - - last = minx; - available = size.width(); - maxExtent = maxHeight; - } else { - int miny = 0; - int y = 0; - int maxWidth = 0; - for (i = 0; i < tabList.count(); ++i, ++tabChainIndex) { - QSize sz = q->tabSizeHint(i); - tabList[i].maxRect = QRect(0, y, sz.width(), sz.height()); - y += sz.height(); - maxWidth = qMax(maxWidth, sz.width()); - sz = minimumTabSizeHint(i); - tabList[i].minRect = QRect(0, miny, sz.width(), sz.height()); - miny += sz.height(); - tabChain[tabChainIndex].init(); - tabChain[tabChainIndex].sizeHint = tabList.at(i).maxRect.height(); - tabChain[tabChainIndex].minimumSize = sz.height(); - tabChain[tabChainIndex].empty = false; - tabChain[tabChainIndex].expansive = true; - - if (!expanding) - tabChain[tabChainIndex].maximumSize = tabChain[tabChainIndex].sizeHint; - } - - last = miny; - available = size.height(); - maxExtent = maxWidth; - } - - Q_ASSERT(tabChainIndex == tabChain.count() - 1); // add an assert just to make sure. - // Mirror our front item. - tabChain[tabChainIndex].init(); - tabChain[tabChainIndex].expansive = (tabAlignment != Qt::AlignRight) - && (tabAlignment != Qt::AlignJustify); - tabChain[tabChainIndex].empty = true; - - // Do the calculation - qGeomCalc(tabChain, 0, tabChain.count(), 0, qMax(available, last), 0); - - // Use the results - for (i = 0; i < tabList.count(); ++i) { - const QLayoutStruct &lstruct = tabChain.at(i + 1); - if (!vertTabs) - tabList[i].rect.setRect(lstruct.pos, 0, lstruct.size, maxExtent); - else - tabList[i].rect.setRect(0, lstruct.pos, maxExtent, lstruct.size); - } - - if (useScrollButtons && tabList.count() && last > available) { - int extra = extraWidth(); -#ifndef QT_NO_STYLE_S60 - QS60Style *s60Style = qobject_cast<QS60Style*>(QApplication::style()); -#endif - if (!vertTabs) { - Qt::LayoutDirection ld = q->layoutDirection(); - QRect arrows = QStyle::visualRect(ld, q->rect(), - QRect(available - extra, 0, extra, size.height())); - int buttonOverlap = q->style()->pixelMetric(QStyle::PM_TabBar_ScrollButtonOverlap, 0, q); - - if (ld == Qt::LeftToRight) { -// In S60style, tab scroll buttons are layoutted separately, on the sides of the tabbar. -#ifndef QT_NO_STYLE_S60 - if (s60Style) { - rightB->setGeometry(arrows.left() + extra / 2, arrows.top(), extra / 2, arrows.height()); - leftB->setGeometry(0, arrows.top(), extra / 2, arrows.height()); - } else { -#endif - leftB->setGeometry(arrows.left(), arrows.top(), extra/2, arrows.height()); - rightB->setGeometry(arrows.right() - extra/2 + buttonOverlap, arrows.top(), - extra/2, arrows.height()); -#ifndef QT_NO_STYLE_S60 - } -#endif - leftB->setArrowType(Qt::LeftArrow); - rightB->setArrowType(Qt::RightArrow); - } else { -#ifndef QT_NO_STYLE_S60 - if (s60Style) { - rightB->setGeometry(arrows.left() + extra / 2, arrows.top(), extra / 2, arrows.height()); - leftB->setGeometry(0, arrows.top(), extra / 2, arrows.height()); - } else { -#endif - rightB->setGeometry(arrows.left(), arrows.top(), extra/2, arrows.height()); - leftB->setGeometry(arrows.right() - extra/2 + buttonOverlap, arrows.top(), - extra/2, arrows.height()); -#ifndef QT_NO_STYLE_S60 - } -#endif - rightB->setArrowType(Qt::LeftArrow); - leftB->setArrowType(Qt::RightArrow); - } - } else { -#ifndef QT_NO_STYLE_S60 - if (s60Style) { - QRect arrows = QRect(0, 0, size.width(), available ); - leftB->setGeometry(arrows.left(), arrows.top(), arrows.width(), extra / 2); - leftB->setArrowType(Qt::UpArrow); - rightB->setGeometry(arrows.left(), arrows.bottom() - extra / 2 + 1, - arrows.width(), extra / 2); - rightB->setArrowType(Qt::DownArrow); - } else { -#endif - QRect arrows = QRect(0, available - extra, size.width(), extra ); - leftB->setGeometry(arrows.left(), arrows.top(), arrows.width(), extra/2); - leftB->setArrowType(Qt::UpArrow); - rightB->setGeometry(arrows.left(), arrows.bottom() - extra/2 + 1, - arrows.width(), extra/2); - rightB->setArrowType(Qt::DownArrow); -#ifndef QT_NO_STYLE_S60 - } -#endif - } - leftB->setEnabled(scrollOffset > 0); - rightB->setEnabled(last - scrollOffset >= available - extra); - leftB->show(); - rightB->show(); - } else { - rightB->hide(); - leftB->hide(); - } - - layoutWidgets(); - q->tabLayoutChange(); -} - -void QTabBarPrivate::makeVisible(int index) -{ - Q_Q(QTabBar); - if (!validIndex(index) || leftB->isHidden()) - return; - - const QRect tabRect = tabList.at(index).rect; - const int oldScrollOffset = scrollOffset; - const bool horiz = !verticalTabs(shape); - const int available = (horiz ? q->width() : q->height()) - extraWidth(); - const int start = horiz ? tabRect.left() : tabRect.top(); - const int end = horiz ? tabRect.right() : tabRect.bottom(); - if (start < scrollOffset) // too far left - scrollOffset = start - (index ? 8 : 0); - else if (end > scrollOffset + available) // too far right - scrollOffset = end - available + 1; - - leftB->setEnabled(scrollOffset > 0); - const int last = horiz ? tabList.last().rect.right() : tabList.last().rect.bottom(); - rightB->setEnabled(last - scrollOffset >= available); - if (oldScrollOffset != scrollOffset) { - q->update(); - layoutWidgets(); - } -} - -void QTabBarPrivate::layoutTab(int index) -{ - Q_Q(QTabBar); - Q_ASSERT(index >= 0); - - Tab &tab = tabList[index]; - bool vertical = verticalTabs(shape); - if (!(tab.leftWidget || tab.rightWidget)) - return; - - QStyleOptionTabV3 opt; - q->initStyleOption(&opt, index); - if (tab.leftWidget) { - QRect rect = q->style()->subElementRect(QStyle::SE_TabBarTabLeftButton, &opt, q); - QPoint p = rect.topLeft(); - if ((index == pressedIndex) || paintWithOffsets) { - if (vertical) - p.setY(p.y() + tabList[index].dragOffset); - else - p.setX(p.x() + tabList[index].dragOffset); - } - tab.leftWidget->move(p); - } - if (tab.rightWidget) { - QRect rect = q->style()->subElementRect(QStyle::SE_TabBarTabRightButton, &opt, q); - QPoint p = rect.topLeft(); - if ((index == pressedIndex) || paintWithOffsets) { - if (vertical) - p.setY(p.y() + tab.dragOffset); - else - p.setX(p.x() + tab.dragOffset); - } - tab.rightWidget->move(p); - } -} - -void QTabBarPrivate::layoutWidgets(int start) -{ - Q_Q(QTabBar); - for (int i = start; i < q->count(); ++i) { - layoutTab(i); - } -} - -void QTabBarPrivate::_q_closeTab() -{ - Q_Q(QTabBar); - QObject *object = q->sender(); - int tabToClose = -1; - QTabBar::ButtonPosition closeSide = (QTabBar::ButtonPosition)q->style()->styleHint(QStyle::SH_TabBar_CloseButtonPosition, 0, q); - for (int i = 0; i < tabList.count(); ++i) { - if (closeSide == QTabBar::LeftSide) { - if (tabList.at(i).leftWidget == object) { - tabToClose = i; - break; - } - } else { - if (tabList.at(i).rightWidget == object) { - tabToClose = i; - break; - } - } - } - if (tabToClose != -1) - emit q->tabCloseRequested(tabToClose); -} - -void QTabBarPrivate::_q_scrollTabs() -{ - Q_Q(QTabBar); - const QObject *sender = q->sender(); - int i = -1; - if (!verticalTabs(shape)) { - if (sender == leftB) { - for (i = tabList.count() - 1; i >= 0; --i) { - if (tabList.at(i).rect.left() - scrollOffset < 0) { - makeVisible(i); - return; - } - } - } else if (sender == rightB) { - int availableWidth = q->width() - extraWidth(); - for (i = 0; i < tabList.count(); ++i) { - if (tabList.at(i).rect.right() - scrollOffset > availableWidth) { - makeVisible(i); - return; - } - } - } - } else { // vertical - if (sender == leftB) { - for (i = tabList.count() - 1; i >= 0; --i) { - if (tabList.at(i).rect.top() - scrollOffset < 0) { - makeVisible(i); - return; - } - } - } else if (sender == rightB) { - int available = q->height() - extraWidth(); - for (i = 0; i < tabList.count(); ++i) { - if (tabList.at(i).rect.bottom() - scrollOffset > available) { - makeVisible(i); - return; - } - } - } - } -} - -void QTabBarPrivate::refresh() -{ - Q_Q(QTabBar); - - // be safe in case a subclass is also handling move with the tabs - if (pressedIndex != -1 - && movable - && QApplication::mouseButtons() == Qt::NoButton) { - moveTabFinished(pressedIndex); - if (!validIndex(pressedIndex)) - pressedIndex = -1; - } - - if (!q->isVisible()) { - layoutDirty = true; - } else { - layoutTabs(); - makeVisible(currentIndex); - q->update(); - q->updateGeometry(); - } -} - -/*! - Creates a new tab bar with the given \a parent. -*/ -QTabBar::QTabBar(QWidget* parent) - :QWidget(*new QTabBarPrivate, parent, 0) -{ - Q_D(QTabBar); - d->init(); -} - - -/*! - Destroys the tab bar. -*/ -QTabBar::~QTabBar() -{ -} - -/*! - \property QTabBar::shape - \brief the shape of the tabs in the tab bar - - Possible values for this property are described by the Shape enum. -*/ - - -QTabBar::Shape QTabBar::shape() const -{ - Q_D(const QTabBar); - return d->shape; -} - -void QTabBar::setShape(Shape shape) -{ - Q_D(QTabBar); - if (d->shape == shape) - return; - d->shape = shape; - d->refresh(); -} - -/*! - \property QTabBar::drawBase - \brief defines whether or not tab bar should draw its base. - - If true then QTabBar draws a base in relation to the styles overlab. - Otherwise only the tabs are drawn. - - \sa QStyle::pixelMetric() QStyle::PM_TabBarBaseOverlap QStyleOptionTabBarBaseV2 -*/ - -void QTabBar::setDrawBase(bool drawBase) -{ - Q_D(QTabBar); - if (d->drawBase == drawBase) - return; - d->drawBase = drawBase; - update(); -} - -bool QTabBar::drawBase() const -{ - Q_D(const QTabBar); - return d->drawBase; -} - -/*! - Adds a new tab with text \a text. Returns the new - tab's index. -*/ -int QTabBar::addTab(const QString &text) -{ - return insertTab(-1, text); -} - -/*! - \overload - - Adds a new tab with icon \a icon and text \a - text. Returns the new tab's index. -*/ -int QTabBar::addTab(const QIcon& icon, const QString &text) -{ - return insertTab(-1, icon, text); -} - -/*! - Inserts a new tab with text \a text at position \a index. If \a - index is out of range, the new tab is appened. Returns the new - tab's index. -*/ -int QTabBar::insertTab(int index, const QString &text) -{ - return insertTab(index, QIcon(), text); -} - -/*!\overload - - Inserts a new tab with icon \a icon and text \a text at position - \a index. If \a index is out of range, the new tab is - appended. Returns the new tab's index. - - If the QTabBar was empty before this function is called, the inserted tab - becomes the current tab. - - Inserting a new tab at an index less than or equal to the current index - will increment the current index, but keep the current tab. -*/ -int QTabBar::insertTab(int index, const QIcon& icon, const QString &text) -{ - Q_D(QTabBar); - if (!d->validIndex(index)) { - index = d->tabList.count(); - d->tabList.append(QTabBarPrivate::Tab(icon, text)); - } else { - d->tabList.insert(index, QTabBarPrivate::Tab(icon, text)); - } -#ifndef QT_NO_SHORTCUT - d->tabList[index].shortcutId = grabShortcut(QKeySequence::mnemonic(text)); -#endif - d->refresh(); - if (d->tabList.count() == 1) - setCurrentIndex(index); - else if (index <= d->currentIndex) - ++d->currentIndex; - - if (d->closeButtonOnTabs) { - QStyleOptionTabV3 opt; - initStyleOption(&opt, index); - ButtonPosition closeSide = (ButtonPosition)style()->styleHint(QStyle::SH_TabBar_CloseButtonPosition, 0, this); - QAbstractButton *closeButton = new CloseButton(this); - connect(closeButton, SIGNAL(clicked()), this, SLOT(_q_closeTab())); - setTabButton(index, closeSide, closeButton); - } - - for (int i = 0; i < d->tabList.count(); ++i) { - if (d->tabList[i].lastTab >= index) - ++d->tabList[i].lastTab; - } - - tabInserted(index); - return index; -} - - -/*! - Removes the tab at position \a index. - - \sa SelectionBehavior - */ -void QTabBar::removeTab(int index) -{ - Q_D(QTabBar); - if (d->validIndex(index)) { -#ifndef QT_NO_SHORTCUT - releaseShortcut(d->tabList.at(index).shortcutId); -#endif - if (d->tabList[index].leftWidget) { - d->tabList[index].leftWidget->hide(); - d->tabList[index].leftWidget->deleteLater(); - d->tabList[index].leftWidget = 0; - } - if (d->tabList[index].rightWidget) { - d->tabList[index].rightWidget->hide(); - d->tabList[index].rightWidget->deleteLater(); - d->tabList[index].rightWidget = 0; - } - - int newIndex = d->tabList[index].lastTab; - d->tabList.removeAt(index); - for (int i = 0; i < d->tabList.count(); ++i) { - if (d->tabList[i].lastTab == index) - d->tabList[i].lastTab = -1; - if (d->tabList[i].lastTab > index) - --d->tabList[i].lastTab; - } - if (index == d->currentIndex) { - // The current tab is going away, in order to make sure - // we emit that "current has changed", we need to reset this - // around. - d->currentIndex = -1; - if (d->tabList.size() > 0) { - switch(d->selectionBehaviorOnRemove) { - case SelectPreviousTab: - if (newIndex > index) - newIndex--; - if (d->validIndex(newIndex)) - break; - // else fallthrough - case SelectRightTab: - newIndex = index; - if (newIndex >= d->tabList.size()) - newIndex = d->tabList.size() - 1; - break; - case SelectLeftTab: - newIndex = index - 1; - if (newIndex < 0) - newIndex = 0; - break; - default: - break; - } - - if (d->validIndex(newIndex)) { - // don't loose newIndex's old through setCurrentIndex - int bump = d->tabList[newIndex].lastTab; - setCurrentIndex(newIndex); - d->tabList[newIndex].lastTab = bump; - } - } else { - emit currentChanged(-1); - } - } else if (index < d->currentIndex) { - setCurrentIndex(d->currentIndex - 1); - } - d->refresh(); - tabRemoved(index); - } -} - - -/*! - Returns true if the tab at position \a index is enabled; otherwise - returns false. -*/ -bool QTabBar::isTabEnabled(int index) const -{ - Q_D(const QTabBar); - if (const QTabBarPrivate::Tab *tab = d->at(index)) - return tab->enabled; - return false; -} - -/*! - If \a enabled is true then the tab at position \a index is - enabled; otherwise the item at position \a index is disabled. -*/ -void QTabBar::setTabEnabled(int index, bool enabled) -{ - Q_D(QTabBar); - if (QTabBarPrivate::Tab *tab = d->at(index)) { - tab->enabled = enabled; -#ifndef QT_NO_SHORTCUT - setShortcutEnabled(tab->shortcutId, enabled); -#endif - update(); - if (!enabled && index == d->currentIndex) - setCurrentIndex(d->validIndex(index+1)?index+1:0); - else if (enabled && !d->validIndex(d->currentIndex)) - setCurrentIndex(index); - } -} - - -/*! - Returns the text of the tab at position \a index, or an empty - string if \a index is out of range. -*/ -QString QTabBar::tabText(int index) const -{ - Q_D(const QTabBar); - if (const QTabBarPrivate::Tab *tab = d->at(index)) - return tab->text; - return QString(); -} - -/*! - Sets the text of the tab at position \a index to \a text. -*/ -void QTabBar::setTabText(int index, const QString &text) -{ - Q_D(QTabBar); - if (QTabBarPrivate::Tab *tab = d->at(index)) { - tab->text = text; -#ifndef QT_NO_SHORTCUT - releaseShortcut(tab->shortcutId); - tab->shortcutId = grabShortcut(QKeySequence::mnemonic(text)); - setShortcutEnabled(tab->shortcutId, tab->enabled); -#endif - d->refresh(); - } -} - -/*! - Returns the text color of the tab with the given \a index, or a invalid - color if \a index is out of range. - - \sa setTabTextColor() -*/ -QColor QTabBar::tabTextColor(int index) const -{ - Q_D(const QTabBar); - if (const QTabBarPrivate::Tab *tab = d->at(index)) - return tab->textColor; - return QColor(); -} - -/*! - Sets the color of the text in the tab with the given \a index to the specified \a color. - - If an invalid color is specified, the tab will use the QTabBar foreground role instead. - - \sa tabTextColor() -*/ -void QTabBar::setTabTextColor(int index, const QColor &color) -{ - Q_D(QTabBar); - if (QTabBarPrivate::Tab *tab = d->at(index)) { - tab->textColor = color; - update(tabRect(index)); - } -} - -/*! - Returns the icon of the tab at position \a index, or a null icon - if \a index is out of range. -*/ -QIcon QTabBar::tabIcon(int index) const -{ - Q_D(const QTabBar); - if (const QTabBarPrivate::Tab *tab = d->at(index)) - return tab->icon; - return QIcon(); -} - -/*! - Sets the icon of the tab at position \a index to \a icon. -*/ -void QTabBar::setTabIcon(int index, const QIcon & icon) -{ - Q_D(QTabBar); - if (QTabBarPrivate::Tab *tab = d->at(index)) { - bool simpleIconChange = (!icon.isNull() && !tab->icon.isNull()); - tab->icon = icon; - if (simpleIconChange) - update(tabRect(index)); - else - d->refresh(); - } -} - -#ifndef QT_NO_TOOLTIP -/*! - Sets the tool tip of the tab at position \a index to \a tip. -*/ -void QTabBar::setTabToolTip(int index, const QString & tip) -{ - Q_D(QTabBar); - if (QTabBarPrivate::Tab *tab = d->at(index)) - tab->toolTip = tip; -} - -/*! - Returns the tool tip of the tab at position \a index, or an empty - string if \a index is out of range. -*/ -QString QTabBar::tabToolTip(int index) const -{ - Q_D(const QTabBar); - if (const QTabBarPrivate::Tab *tab = d->at(index)) - return tab->toolTip; - return QString(); -} -#endif // QT_NO_TOOLTIP - -#ifndef QT_NO_WHATSTHIS -/*! - \since 4.1 - - Sets the What's This help text of the tab at position \a index - to \a text. -*/ -void QTabBar::setTabWhatsThis(int index, const QString &text) -{ - Q_D(QTabBar); - if (QTabBarPrivate::Tab *tab = d->at(index)) - tab->whatsThis = text; -} - -/*! - \since 4.1 - - Returns the What's This help text of the tab at position \a index, - or an empty string if \a index is out of range. -*/ -QString QTabBar::tabWhatsThis(int index) const -{ - Q_D(const QTabBar); - if (const QTabBarPrivate::Tab *tab = d->at(index)) - return tab->whatsThis; - return QString(); -} - -#endif // QT_NO_WHATSTHIS - -/*! - Sets the data of the tab at position \a index to \a data. -*/ -void QTabBar::setTabData(int index, const QVariant & data) -{ - Q_D(QTabBar); - if (QTabBarPrivate::Tab *tab = d->at(index)) - tab->data = data; -} - -/*! - Returns the data of the tab at position \a index, or a null - variant if \a index is out of range. -*/ -QVariant QTabBar::tabData(int index) const -{ - Q_D(const QTabBar); - if (const QTabBarPrivate::Tab *tab = d->at(index)) - return tab->data; - return QVariant(); -} - -/*! - Returns the visual rectangle of the tab at position \a - index, or a null rectangle if \a index is out of range. -*/ -QRect QTabBar::tabRect(int index) const -{ - Q_D(const QTabBar); - if (const QTabBarPrivate::Tab *tab = d->at(index)) { - if (d->layoutDirty) - const_cast<QTabBarPrivate*>(d)->layoutTabs(); - QRect r = tab->rect; - if (verticalTabs(d->shape)) - r.translate(0, -d->scrollOffset); - else - r.translate(-d->scrollOffset, 0); - if (!verticalTabs(d->shape)) - r = QStyle::visualRect(layoutDirection(), rect(), r); - return r; - } - return QRect(); -} - -/*! - \since 4.3 - Returns the index of the tab that covers \a position or -1 if no - tab covers \a position; -*/ - -int QTabBar::tabAt(const QPoint &position) const -{ - Q_D(const QTabBar); - if (d->validIndex(d->currentIndex) - && tabRect(d->currentIndex).contains(position)) { - return d->currentIndex; - } - const int max = d->tabList.size(); - for (int i = 0; i < max; ++i) { - if (tabRect(i).contains(position)) { - return i; - } - } - return -1; -} - -/*! - \property QTabBar::currentIndex - \brief the index of the tab bar's visible tab - - The current index is -1 if there is no current tab. -*/ - -int QTabBar::currentIndex() const -{ - Q_D(const QTabBar); - if (d->validIndex(d->currentIndex)) - return d->currentIndex; - return -1; -} - - -void QTabBar::setCurrentIndex(int index) -{ - Q_D(QTabBar); - if (d->dragInProgress && d->pressedIndex != -1) - return; - - int oldIndex = d->currentIndex; - if (d->validIndex(index) && d->currentIndex != index) { - d->currentIndex = index; - update(); - d->makeVisible(index); - d->tabList[index].lastTab = oldIndex; - if (oldIndex >= 0 && oldIndex < count()) - d->layoutTab(oldIndex); - d->layoutTab(index); -#ifndef QT_NO_ACCESSIBILITY - if (QAccessible::isActive()) { - QAccessible::updateAccessibility(this, index + 1, QAccessible::Focus); - QAccessible::updateAccessibility(this, index + 1, QAccessible::Selection); - } -#endif -#ifdef QT3_SUPPORT - emit selected(index); -#endif - emit currentChanged(index); - } -} - -/*! - \property QTabBar::iconSize - \brief The size for icons in the tab bar - \since 4.1 - - The default value is style-dependent. \c iconSize is a maximum - size; icons that are smaller are not scaled up. - - \sa QTabWidget::iconSize -*/ -QSize QTabBar::iconSize() const -{ - Q_D(const QTabBar); - if (d->iconSize.isValid()) - return d->iconSize; - int iconExtent = style()->pixelMetric(QStyle::PM_TabBarIconSize, 0, this); - return QSize(iconExtent, iconExtent); - -} - -void QTabBar::setIconSize(const QSize &size) -{ - Q_D(QTabBar); - d->iconSize = size; - d->layoutDirty = true; - update(); - updateGeometry(); -} - -/*! - \property QTabBar::count - \brief the number of tabs in the tab bar -*/ - -int QTabBar::count() const -{ - Q_D(const QTabBar); - return d->tabList.count(); -} - - -/*!\reimp - */ -QSize QTabBar::sizeHint() const -{ - Q_D(const QTabBar); - if (d->layoutDirty) - const_cast<QTabBarPrivate*>(d)->layoutTabs(); - QRect r; - for (int i = 0; i < d->tabList.count(); ++i) - r = r.united(d->tabList.at(i).maxRect); - QSize sz = QApplication::globalStrut(); - return r.size().expandedTo(sz); -} - -/*!\reimp - */ -QSize QTabBar::minimumSizeHint() const -{ - Q_D(const QTabBar); - if (d->layoutDirty) - const_cast<QTabBarPrivate*>(d)->layoutTabs(); - if (!d->useScrollButtons) { - QRect r; - for (int i = 0; i < d->tabList.count(); ++i) - r = r.united(d->tabList.at(i).minRect); - return r.size().expandedTo(QApplication::globalStrut()); - } - if (verticalTabs(d->shape)) - return QSize(sizeHint().width(), d->rightB->sizeHint().height() * 2 + 75); - else - return QSize(d->rightB->sizeHint().width() * 2 + 75, sizeHint().height()); -} - -// Compute the most-elided possible text, for minimumSizeHint -static QString computeElidedText(Qt::TextElideMode mode, const QString &text) -{ - if (text.length() <= 3) - return text; - - static const QLatin1String Ellipses("..."); - QString ret; - switch (mode) { - case Qt::ElideRight: - ret = text.left(2) + Ellipses; - break; - case Qt::ElideMiddle: - ret = text.left(1) + Ellipses + text.right(1); - break; - case Qt::ElideLeft: - ret = Ellipses + text.right(2); - break; - case Qt::ElideNone: - ret = text; - break; - } - return ret; -} - -QSize QTabBarPrivate::minimumTabSizeHint(int index) -{ - Q_Q(QTabBar); - // ### Qt 5: make this a protected virtual function in QTabBar - Tab &tab = tabList[index]; - QString oldText = tab.text; - tab.text = computeElidedText(elideMode, oldText); - QSize size = q->tabSizeHint(index); - tab.text = oldText; - return size; -} - -/*! - Returns the size hint for the tab at position \a index. -*/ -QSize QTabBar::tabSizeHint(int index) const -{ - //Note: this must match with the computations in QCommonStylePrivate::tabLayout - Q_D(const QTabBar); - if (const QTabBarPrivate::Tab *tab = d->at(index)) { - QStyleOptionTabV3 opt; - initStyleOption(&opt, index); - opt.text = d->tabList.at(index).text; - QSize iconSize = tab->icon.isNull() ? QSize(0, 0) : opt.iconSize; - int hframe = style()->pixelMetric(QStyle::PM_TabBarTabHSpace, &opt, this); - int vframe = style()->pixelMetric(QStyle::PM_TabBarTabVSpace, &opt, this); - const QFontMetrics fm = fontMetrics(); - - int maxWidgetHeight = qMax(opt.leftButtonSize.height(), opt.rightButtonSize.height()); - int maxWidgetWidth = qMax(opt.leftButtonSize.width(), opt.rightButtonSize.width()); - - int widgetWidth = 0; - int widgetHeight = 0; - int padding = 0; - if (!opt.leftButtonSize.isEmpty()) { - padding += 4; - widgetWidth += opt.leftButtonSize.width(); - widgetHeight += opt.leftButtonSize.height(); - } - if (!opt.rightButtonSize.isEmpty()) { - padding += 4; - widgetWidth += opt.rightButtonSize.width(); - widgetHeight += opt.rightButtonSize.height(); - } - if (!opt.icon.isNull()) - padding += 4; - - QSize csz; - if (verticalTabs(d->shape)) { - csz = QSize( qMax(maxWidgetWidth, qMax(fm.height(), iconSize.height())) + vframe, - fm.size(Qt::TextShowMnemonic, tab->text).width() + iconSize.width() + hframe + widgetHeight + padding); - } else { - csz = QSize(fm.size(Qt::TextShowMnemonic, tab->text).width() + iconSize.width() + hframe - + widgetWidth + padding, - qMax(maxWidgetHeight, qMax(fm.height(), iconSize.height())) + vframe); - } - - QSize retSize = style()->sizeFromContents(QStyle::CT_TabBarTab, &opt, csz, this); - return retSize; - } - return QSize(); -} - -/*! - This virtual handler is called after a new tab was added or - inserted at position \a index. - - \sa tabRemoved() - */ -void QTabBar::tabInserted(int index) -{ - Q_UNUSED(index) -} - -/*! - This virtual handler is called after a tab was removed from - position \a index. - - \sa tabInserted() - */ -void QTabBar::tabRemoved(int index) -{ - Q_UNUSED(index) -} - -/*! - This virtual handler is called whenever the tab layout changes. - - \sa tabRect() - */ -void QTabBar::tabLayoutChange() -{ -} - - -/*!\reimp - */ -void QTabBar::showEvent(QShowEvent *) -{ - Q_D(QTabBar); - if (d->layoutDirty) - d->refresh(); - if (!d->validIndex(d->currentIndex)) - setCurrentIndex(0); - d->updateMacBorderMetrics(); -} - -/*!\reimp - */ -void QTabBar::hideEvent(QHideEvent *) -{ - Q_D(QTabBar); - d->updateMacBorderMetrics(); -} - -/*!\reimp - */ -bool QTabBar::event(QEvent *event) -{ - Q_D(QTabBar); - if (event->type() == QEvent::HoverMove - || event->type() == QEvent::HoverEnter) { - QHoverEvent *he = static_cast<QHoverEvent *>(event); - if (!d->hoverRect.contains(he->pos())) { - QRect oldHoverRect = d->hoverRect; - for (int i = 0; i < d->tabList.count(); ++i) { - QRect area = tabRect(i); - if (area.contains(he->pos())) { - d->hoverRect = area; - break; - } - } - if (he->oldPos() != QPoint(-1, -1)) - update(oldHoverRect); - update(d->hoverRect); - } - return true; - } else if (event->type() == QEvent::HoverLeave ) { - QRect oldHoverRect = d->hoverRect; - d->hoverRect = QRect(); - update(oldHoverRect); - return true; -#ifndef QT_NO_TOOLTIP - } else if (event->type() == QEvent::ToolTip) { - if (const QTabBarPrivate::Tab *tab = d->at(tabAt(static_cast<QHelpEvent*>(event)->pos()))) { - if (!tab->toolTip.isEmpty()) { - QToolTip::showText(static_cast<QHelpEvent*>(event)->globalPos(), tab->toolTip, this); - return true; - } - } -#endif // QT_NO_TOOLTIP -#ifndef QT_NO_WHATSTHIS - } else if (event->type() == QEvent::QueryWhatsThis) { - const QTabBarPrivate::Tab *tab = d->at(d->indexAtPos(static_cast<QHelpEvent*>(event)->pos())); - if (!tab || tab->whatsThis.isEmpty()) - event->ignore(); - return true; - } else if (event->type() == QEvent::WhatsThis) { - if (const QTabBarPrivate::Tab *tab = d->at(d->indexAtPos(static_cast<QHelpEvent*>(event)->pos()))) { - if (!tab->whatsThis.isEmpty()) { - QWhatsThis::showText(static_cast<QHelpEvent*>(event)->globalPos(), - tab->whatsThis, this); - return true; - } - } -#endif // QT_NO_WHATSTHIS -#ifndef QT_NO_SHORTCUT - } else if (event->type() == QEvent::Shortcut) { - QShortcutEvent *se = static_cast<QShortcutEvent *>(event); - for (int i = 0; i < d->tabList.count(); ++i) { - const QTabBarPrivate::Tab *tab = &d->tabList.at(i); - if (tab->shortcutId == se->shortcutId()) { - setCurrentIndex(i); - return true; - } - } -#endif - } - return QWidget::event(event); -} - -/*!\reimp - */ -void QTabBar::resizeEvent(QResizeEvent *) -{ - Q_D(QTabBar); - if (d->layoutDirty) - updateGeometry(); - d->layoutTabs(); - - d->makeVisible(d->currentIndex); -} - -/*!\reimp - */ -void QTabBar::paintEvent(QPaintEvent *) -{ - Q_D(QTabBar); - - QStyleOptionTabBarBaseV2 optTabBase; - QTabBarPrivate::initStyleBaseOption(&optTabBase, this, size()); - - QStylePainter p(this); - int selected = -1; - int cut = -1; - bool rtl = optTabBase.direction == Qt::RightToLeft; - bool vertical = verticalTabs(d->shape); - QStyleOptionTab cutTab; - selected = d->currentIndex; - if (d->dragInProgress) - selected = d->pressedIndex; - - for (int i = 0; i < d->tabList.count(); ++i) - optTabBase.tabBarRect |= tabRect(i); - - optTabBase.selectedTabRect = tabRect(selected); - - if (d->drawBase) - p.drawPrimitive(QStyle::PE_FrameTabBarBase, optTabBase); - - for (int i = 0; i < d->tabList.count(); ++i) { - QStyleOptionTabV3 tab; - initStyleOption(&tab, i); - if (d->paintWithOffsets && d->tabList[i].dragOffset != 0) { - if (vertical) { - tab.rect.moveTop(tab.rect.y() + d->tabList[i].dragOffset); - } else { - tab.rect.moveLeft(tab.rect.x() + d->tabList[i].dragOffset); - } - } - if (!(tab.state & QStyle::State_Enabled)) { - tab.palette.setCurrentColorGroup(QPalette::Disabled); - } - // If this tab is partially obscured, make a note of it so that we can pass the information - // along when we draw the tear. - if (((!vertical && (!rtl && tab.rect.left() < 0)) || (rtl && tab.rect.right() > width())) - || (vertical && tab.rect.top() < 0)) { - cut = i; - cutTab = tab; - } - // Don't bother drawing a tab if the entire tab is outside of the visible tab bar. - if ((!vertical && (tab.rect.right() < 0 || tab.rect.left() > width())) - || (vertical && (tab.rect.bottom() < 0 || tab.rect.top() > height()))) - continue; - - optTabBase.tabBarRect |= tab.rect; - if (i == selected) - continue; - - p.drawControl(QStyle::CE_TabBarTab, tab); - } - - // Draw the selected tab last to get it "on top" - if (selected >= 0) { - QStyleOptionTabV3 tab; - initStyleOption(&tab, selected); - if (d->paintWithOffsets && d->tabList[selected].dragOffset != 0) { - if (vertical) - tab.rect.moveTop(tab.rect.y() + d->tabList[selected].dragOffset); - else - tab.rect.moveLeft(tab.rect.x() + d->tabList[selected].dragOffset); - } - if (!d->dragInProgress) - p.drawControl(QStyle::CE_TabBarTab, tab); - else { - int taboverlap = style()->pixelMetric(QStyle::PM_TabBarTabOverlap, 0, this); - d->movingTab->setGeometry(tab.rect.adjusted(-taboverlap, 0, taboverlap, 0)); - } - } - - // Only draw the tear indicator if necessary. Most of the time we don't need too. - if (d->leftB->isVisible() && cut >= 0) { - cutTab.rect = rect(); - cutTab.rect = style()->subElementRect(QStyle::SE_TabBarTearIndicator, &cutTab, this); - p.drawPrimitive(QStyle::PE_IndicatorTabTear, cutTab); - } -} - -/* - Given that index at position from moved to position to where return where index goes. - */ -int QTabBarPrivate::calculateNewPosition(int from, int to, int index) const -{ - if (index == from) - return to; - - int start = qMin(from, to); - int end = qMax(from, to); - if (index >= start && index <= end) - index += (from < to) ? -1 : 1; - return index; -} - -/*! - Moves the item at index position \a from to index position \a to. - \since 4.5 - - \sa tabMoved(), tabLayoutChange() - */ -void QTabBar::moveTab(int from, int to) -{ - Q_D(QTabBar); - if (from == to - || !d->validIndex(from) - || !d->validIndex(to)) - return; - - bool vertical = verticalTabs(d->shape); - int oldPressedPosition = 0; - if (d->pressedIndex != -1) { - // Record the position of the pressed tab before reordering the tabs. - oldPressedPosition = vertical ? d->tabList[d->pressedIndex].rect.y() - : d->tabList[d->pressedIndex].rect.x(); - } - - // Update the locations of the tabs first - int start = qMin(from, to); - int end = qMax(from, to); - int width = vertical ? d->tabList[from].rect.height() : d->tabList[from].rect.width(); - if (from < to) - width *= -1; - bool rtl = isRightToLeft(); - for (int i = start; i <= end; ++i) { - if (i == from) - continue; - if (vertical) - d->tabList[i].rect.moveTop(d->tabList[i].rect.y() + width); - else - d->tabList[i].rect.moveLeft(d->tabList[i].rect.x() + width); - int direction = -1; - if (rtl && !vertical) - direction *= -1; - if (d->tabList[i].dragOffset != 0) - d->tabList[i].dragOffset += (direction * width); - } - - if (vertical) { - if (from < to) - d->tabList[from].rect.moveTop(d->tabList[to].rect.bottom() + 1); - else - d->tabList[from].rect.moveTop(d->tabList[to].rect.top() - width); - } else { - if (from < to) - d->tabList[from].rect.moveLeft(d->tabList[to].rect.right() + 1); - else - d->tabList[from].rect.moveLeft(d->tabList[to].rect.left() - width); - } - - // Move the actual data structures - d->tabList.move(from, to); - - // update lastTab locations - for (int i = 0; i < d->tabList.count(); ++i) - d->tabList[i].lastTab = d->calculateNewPosition(from, to, d->tabList[i].lastTab); - - // update external variables - d->currentIndex = d->calculateNewPosition(from, to, d->currentIndex); - - // If we are in the middle of a drag update the dragStartPosition - if (d->pressedIndex != -1) { - d->pressedIndex = d->calculateNewPosition(from, to, d->pressedIndex); - int newPressedPosition = vertical ? d->tabList[d->pressedIndex].rect.top() : d->tabList[d->pressedIndex].rect.left(); - int diff = oldPressedPosition - newPressedPosition; - if (isRightToLeft() && !vertical) - diff *= -1; - if (vertical) - d->dragStartPosition.setY(d->dragStartPosition.y() - diff); - else - d->dragStartPosition.setX(d->dragStartPosition.x() - diff); - } - - d->layoutWidgets(start); - update(); - emit tabMoved(from, to); - emit tabLayoutChange(); -} - -void QTabBarPrivate::slide(int from, int to) -{ - Q_Q(QTabBar); - if (from == to - || !validIndex(from) - || !validIndex(to)) - return; - bool vertical = verticalTabs(shape); - int preLocation = vertical ? q->tabRect(from).y() : q->tabRect(from).x(); - q->setUpdatesEnabled(false); - q->moveTab(from, to); - q->setUpdatesEnabled(true); - int postLocation = vertical ? q->tabRect(to).y() : q->tabRect(to).x(); - int length = postLocation - preLocation; - tabList[to].dragOffset -= length; - tabList[to].startAnimation(this, ANIMATION_DURATION); -} - -void QTabBarPrivate::moveTab(int index, int offset) -{ - if (!validIndex(index)) - return; - tabList[index].dragOffset = offset; - layoutTab(index); // Make buttons follow tab - q_func()->update(); -} - -/*!\reimp -*/ -void QTabBar::mousePressEvent(QMouseEvent *event) -{ - Q_D(QTabBar); - if (event->button() != Qt::LeftButton) { - event->ignore(); - return; - } - // Be safe! - if (d->pressedIndex != -1 && d->movable) - d->moveTabFinished(d->pressedIndex); - - d->pressedIndex = d->indexAtPos(event->pos()); -#ifdef Q_WS_MAC - d->previousPressedIndex = d->pressedIndex; -#endif - if (d->validIndex(d->pressedIndex)) { - QStyleOptionTabBarBaseV2 optTabBase; - optTabBase.init(this); - optTabBase.documentMode = d->documentMode; - if (event->type() == style()->styleHint(QStyle::SH_TabBar_SelectMouseType, &optTabBase, this)) - setCurrentIndex(d->pressedIndex); - else - repaint(tabRect(d->pressedIndex)); - if (d->movable) { - d->dragStartPosition = event->pos(); - } - } -} - -/*!\reimp - */ -void QTabBar::mouseMoveEvent(QMouseEvent *event) -{ - Q_D(QTabBar); - if (d->movable) { - // Be safe! - if (d->pressedIndex != -1 - && event->buttons() == Qt::NoButton) - d->moveTabFinished(d->pressedIndex); - - // Start drag - if (!d->dragInProgress && d->pressedIndex != -1) { - if ((event->pos() - d->dragStartPosition).manhattanLength() > QApplication::startDragDistance()) { - d->dragInProgress = true; - d->setupMovableTab(); - } - } - - int offset = (event->pos() - d->dragStartPosition).manhattanLength(); - if (event->buttons() == Qt::LeftButton - && offset > QApplication::startDragDistance() - && d->validIndex(d->pressedIndex)) { - bool vertical = verticalTabs(d->shape); - int dragDistance; - if (vertical) { - dragDistance = (event->pos().y() - d->dragStartPosition.y()); - } else { - dragDistance = (event->pos().x() - d->dragStartPosition.x()); - } - d->tabList[d->pressedIndex].dragOffset = dragDistance; - - QRect startingRect = tabRect(d->pressedIndex); - if (vertical) - startingRect.moveTop(startingRect.y() + dragDistance); - else - startingRect.moveLeft(startingRect.x() + dragDistance); - - int overIndex; - if (dragDistance < 0) - overIndex = tabAt(startingRect.topLeft()); - else - overIndex = tabAt(startingRect.topRight()); - - if (overIndex != d->pressedIndex && overIndex != -1) { - int offset = 1; - if (isRightToLeft() && !vertical) - offset *= -1; - if (dragDistance < 0) { - dragDistance *= -1; - offset *= -1; - } - for (int i = d->pressedIndex; - offset > 0 ? i < overIndex : i > overIndex; - i += offset) { - QRect overIndexRect = tabRect(overIndex); - int needsToBeOver = (vertical ? overIndexRect.height() : overIndexRect.width()) / 2; - if (dragDistance > needsToBeOver) - d->slide(i + offset, d->pressedIndex); - } - } - // Buttons needs to follow the dragged tab - d->layoutTab(d->pressedIndex); - - update(); - } -#ifdef Q_WS_MAC - } else if (!d->documentMode && event->buttons() == Qt::LeftButton && d->previousPressedIndex != -1) { - int newPressedIndex = d->indexAtPos(event->pos()); - if (d->pressedIndex == -1 && d->previousPressedIndex == newPressedIndex) { - d->pressedIndex = d->previousPressedIndex; - update(tabRect(d->pressedIndex)); - } else if(d->pressedIndex != newPressedIndex) { - d->pressedIndex = -1; - update(tabRect(d->previousPressedIndex)); - } -#endif - } - - if (event->buttons() != Qt::LeftButton) { - event->ignore(); - return; - } - QStyleOptionTabBarBaseV2 optTabBase; - optTabBase.init(this); - optTabBase.documentMode = d->documentMode; -} - -void QTabBarPrivate::setupMovableTab() -{ - Q_Q(QTabBar); - if (!movingTab) - movingTab = new QWidget(q); - - int taboverlap = q->style()->pixelMetric(QStyle::PM_TabBarTabOverlap, 0 ,q); - QRect grabRect = q->tabRect(pressedIndex); - grabRect.adjust(-taboverlap, 0, taboverlap, 0); - - QPixmap grabImage(grabRect.size()); - grabImage.fill(Qt::transparent); - QStylePainter p(&grabImage, q); - p.initFrom(q); - - QStyleOptionTabV3 tab; - q->initStyleOption(&tab, pressedIndex); - tab.rect.moveTopLeft(QPoint(taboverlap, 0)); - p.drawControl(QStyle::CE_TabBarTab, tab); - p.end(); - - QPalette pal; - pal.setBrush(QPalette::All, QPalette::Window, grabImage); - movingTab->setPalette(pal); - movingTab->setGeometry(grabRect); - movingTab->setAutoFillBackground(true); - movingTab->raise(); - - // Re-arrange widget order to avoid overlaps - if (tabList[pressedIndex].leftWidget) - tabList[pressedIndex].leftWidget->raise(); - if (tabList[pressedIndex].rightWidget) - tabList[pressedIndex].rightWidget->raise(); - if (leftB) - leftB->raise(); - if (rightB) - rightB->raise(); - movingTab->setVisible(true); -} - -void QTabBarPrivate::moveTabFinished(int index) -{ - Q_Q(QTabBar); - bool cleanup = (pressedIndex == index) || (pressedIndex == -1) || !validIndex(index); - bool allAnimationsFinished = true; -#ifndef QT_NO_ANIMATION - for(int i = 0; allAnimationsFinished && i < tabList.count(); ++i) { - const Tab &t = tabList.at(i); - if (t.animation && t.animation->state() == QAbstractAnimation::Running) - allAnimationsFinished = false; - } -#endif //QT_NO_ANIMATION - if (allAnimationsFinished && cleanup) { - if(movingTab) - movingTab->setVisible(false); // We might not get a mouse release - for (int i = 0; i < tabList.count(); ++i) { - tabList[i].dragOffset = 0; - } - if (pressedIndex != -1 && movable) { - pressedIndex = -1; - dragInProgress = false; - dragStartPosition = QPoint(); - } - layoutWidgets(); - } else { - if (!validIndex(index)) - return; - tabList[index].dragOffset = 0; - } - q->update(); -} - -/*!\reimp -*/ -void QTabBar::mouseReleaseEvent(QMouseEvent *event) -{ - Q_D(QTabBar); - if (event->button() != Qt::LeftButton) { - event->ignore(); - return; - } -#ifdef Q_WS_MAC - d->previousPressedIndex = -1; -#endif - if (d->movable && d->dragInProgress && d->validIndex(d->pressedIndex)) { - int length = d->tabList[d->pressedIndex].dragOffset; - int width = verticalTabs(d->shape) - ? tabRect(d->pressedIndex).height() - : tabRect(d->pressedIndex).width(); - int duration = qMin(ANIMATION_DURATION, - (qAbs(length) * ANIMATION_DURATION) / width); - d->tabList[d->pressedIndex].startAnimation(d, duration); - d->dragInProgress = false; - d->movingTab->setVisible(false); - d->dragStartPosition = QPoint(); - } - - int i = d->indexAtPos(event->pos()) == d->pressedIndex ? d->pressedIndex : -1; - d->pressedIndex = -1; - QStyleOptionTabBarBaseV2 optTabBase; - optTabBase.initFrom(this); - optTabBase.documentMode = d->documentMode; - if (style()->styleHint(QStyle::SH_TabBar_SelectMouseType, &optTabBase, this) == QEvent::MouseButtonRelease) - setCurrentIndex(i); -} - -/*!\reimp - */ -void QTabBar::keyPressEvent(QKeyEvent *event) -{ - Q_D(QTabBar); - if (event->key() != Qt::Key_Left && event->key() != Qt::Key_Right) { - event->ignore(); - return; - } - int offset = event->key() == (isRightToLeft() ? Qt::Key_Right : Qt::Key_Left) ? -1 : 1; - d->setCurrentNextEnabledIndex(offset); -} - -/*!\reimp - */ -#ifndef QT_NO_WHEELEVENT -void QTabBar::wheelEvent(QWheelEvent *event) -{ - Q_D(QTabBar); - int offset = event->delta() > 0 ? -1 : 1; - d->setCurrentNextEnabledIndex(offset); - QWidget::wheelEvent(event); -} -#endif //QT_NO_WHEELEVENT - -void QTabBarPrivate::setCurrentNextEnabledIndex(int offset) -{ - Q_Q(QTabBar); - for (int index = currentIndex + offset; validIndex(index); index += offset) { - if (tabList.at(index).enabled) { - q->setCurrentIndex(index); - break; - } - } -} - -/*!\reimp - */ -void QTabBar::changeEvent(QEvent *event) -{ - Q_D(QTabBar); - if (event->type() == QEvent::StyleChange) { - if (!d->elideModeSetByUser) - d->elideMode = Qt::TextElideMode(style()->styleHint(QStyle::SH_TabBar_ElideMode, 0, this)); - if (!d->useScrollButtonsSetByUser) - d->useScrollButtons = !style()->styleHint(QStyle::SH_TabBar_PreferNoArrows, 0, this); - d->refresh(); - } else if (event->type() == QEvent::FontChange) { - d->refresh(); - } - QWidget::changeEvent(event); -} - -/*! - \property QTabBar::elideMode - \brief how to elide text in the tab bar - \since 4.2 - - This property controls how items are elided when there is not - enough space to show them for a given tab bar size. - - By default the value is style dependent. - - \sa QTabWidget::elideMode usesScrollButtons QStyle::SH_TabBar_ElideMode -*/ - -Qt::TextElideMode QTabBar::elideMode() const -{ - Q_D(const QTabBar); - return d->elideMode; -} - -void QTabBar::setElideMode(Qt::TextElideMode mode) -{ - Q_D(QTabBar); - d->elideMode = mode; - d->elideModeSetByUser = true; - d->refresh(); -} - -/*! - \property QTabBar::usesScrollButtons - \brief Whether or not a tab bar should use buttons to scroll tabs when it - has many tabs. - \since 4.2 - - When there are too many tabs in a tab bar for its size, the tab bar can either choose - to expand its size or to add buttons that allow you to scroll through the tabs. - - By default the value is style dependant. - - \sa elideMode QTabWidget::usesScrollButtons QStyle::SH_TabBar_PreferNoArrows -*/ -bool QTabBar::usesScrollButtons() const -{ - return d_func()->useScrollButtons; -} - -void QTabBar::setUsesScrollButtons(bool useButtons) -{ - Q_D(QTabBar); - d->useScrollButtonsSetByUser = true; - if (d->useScrollButtons == useButtons) - return; - d->useScrollButtons = useButtons; - d->refresh(); -} - -/*! - \fn void QTabBar::setCurrentTab(int index) - - Use setCurrentIndex() instead. -*/ - -/*! - \fn void QTabBar::selected(int index); - - Use currentChanged() instead. -*/ - - -/*! - \property QTabBar::tabsClosable - \brief Whether or not a tab bar should place close buttons on each tab - \since 4.5 - - When tabsClosable is set to true a close button will appear on the tab on - either the left or right hand side depending upon the style. When the button - is clicked the tab the signal tabCloseRequested will be emitted. - - By default the value is false. - - \sa setTabButton(), tabRemoved() -*/ - -bool QTabBar::tabsClosable() const -{ - Q_D(const QTabBar); - return d->closeButtonOnTabs; -} - -void QTabBar::setTabsClosable(bool closable) -{ - Q_D(QTabBar); - if (d->closeButtonOnTabs == closable) - return; - d->closeButtonOnTabs = closable; - ButtonPosition closeSide = (ButtonPosition)style()->styleHint(QStyle::SH_TabBar_CloseButtonPosition, 0, this); - if (!closable) { - for (int i = 0; i < d->tabList.count(); ++i) { - if (closeSide == LeftSide && d->tabList[i].leftWidget) { - d->tabList[i].leftWidget->deleteLater(); - d->tabList[i].leftWidget = 0; - } - if (closeSide == RightSide && d->tabList[i].rightWidget) { - d->tabList[i].rightWidget->deleteLater(); - d->tabList[i].rightWidget = 0; - } - } - } else { - bool newButtons = false; - for (int i = 0; i < d->tabList.count(); ++i) { - if (tabButton(i, closeSide)) - continue; - newButtons = true; - QAbstractButton *closeButton = new CloseButton(this); - connect(closeButton, SIGNAL(clicked()), this, SLOT(_q_closeTab())); - setTabButton(i, closeSide, closeButton); - } - if (newButtons) - d->layoutTabs(); - } - update(); -} - -/*! - \enum QTabBar::ButtonPosition - \since 4.5 - - This enum type lists the location of the widget on a tab. - - \value LeftSide Left side of the tab. - - \value RightSide Right side of the tab. - -*/ - -/*! - \enum QTabBar::SelectionBehavior - \since 4.5 - - This enum type lists the behavior of QTabBar when a tab is removed - and the tab being removed is also the current tab. - - \value SelectLeftTab Select the tab to the left of the one being removed. - - \value SelectRightTab Select the tab to the right of the one being removed. - - \value SelectPreviousTab Select the previously selected tab. - -*/ - -/*! - \property QTabBar::selectionBehaviorOnRemove - \brief What tab should be set as current when removeTab is called if - the removed tab is also the current tab. - \since 4.5 - - By default the value is SelectRightTab. - - \sa removeTab() -*/ - - -QTabBar::SelectionBehavior QTabBar::selectionBehaviorOnRemove() const -{ - Q_D(const QTabBar); - return d->selectionBehaviorOnRemove; -} - -void QTabBar::setSelectionBehaviorOnRemove(QTabBar::SelectionBehavior behavior) -{ - Q_D(QTabBar); - d->selectionBehaviorOnRemove = behavior; -} - -/*! - \property QTabBar::expanding - \brief When expanding is true QTabBar will expand the tabs to use the empty space. - \since 4.5 - - By default the value is true. - - \sa QTabWidget::documentMode -*/ - -bool QTabBar::expanding() const -{ - Q_D(const QTabBar); - return d->expanding; -} - -void QTabBar::setExpanding(bool enabled) -{ - Q_D(QTabBar); - if (d->expanding == enabled) - return; - d->expanding = enabled; - d->layoutTabs(); -} - -/*! - \property QTabBar::movable - \brief This property holds whether the user can move the tabs - within the tabbar area. - - \since 4.5 - - By default, this property is false; -*/ - -bool QTabBar::isMovable() const -{ - Q_D(const QTabBar); - return d->movable; -} - -void QTabBar::setMovable(bool movable) -{ - Q_D(QTabBar); - d->movable = movable; -} - - -/*! - \property QTabBar::documentMode - \brief Whether or not the tab bar is rendered in a mode suitable for the main window. - \since 4.5 - - This property is used as a hint for styles to draw the tabs in a different - way then they would normally look in a tab widget. On Mac OS X this will - look similar to the tabs in Safari or Leopard's Terminal.app. - - \sa QTabWidget::documentMode -*/ -bool QTabBar::documentMode() const -{ - return d_func()->documentMode; -} - -void QTabBar::setDocumentMode(bool enabled) -{ - Q_D(QTabBar); - - d->documentMode = enabled; - d->updateMacBorderMetrics(); -} - -/*! - Sets \a widget on the tab \a index. The widget is placed - on the left or right hand side depending upon the \a position. - \since 4.5 - - Any previously set widget in \a position is hidden. - - The tab bar will take ownership of the widget and so all widgets set here - will be deleted by the tab bar when it is destroyed unless you separately - reparent the widget after setting some other widget (or 0). - - \sa tabsClosable() - */ -void QTabBar::setTabButton(int index, ButtonPosition position, QWidget *widget) -{ - Q_D(QTabBar); - if (index < 0 || index >= d->tabList.count()) - return; - if (widget) { - widget->setParent(this); - // make sure our left and right widgets stay on top - widget->lower(); - widget->show(); - } - if (position == LeftSide) { - if (d->tabList[index].leftWidget) - d->tabList[index].leftWidget->hide(); - d->tabList[index].leftWidget = widget; - } else { - if (d->tabList[index].rightWidget) - d->tabList[index].rightWidget->hide(); - d->tabList[index].rightWidget = widget; - } - d->layoutTabs(); - d->refresh(); - update(); -} - -/*! - Returns the widget set a tab \a index and \a position or 0 if - one is not set. - */ -QWidget *QTabBar::tabButton(int index, ButtonPosition position) const -{ - Q_D(const QTabBar); - if (index < 0 || index >= d->tabList.count()) - return 0; - if (position == LeftSide) - return d->tabList.at(index).leftWidget; - else - return d->tabList.at(index).rightWidget; -} - -CloseButton::CloseButton(QWidget *parent) - : QAbstractButton(parent) -{ - setFocusPolicy(Qt::NoFocus); -#ifndef QT_NO_CURSOR - setCursor(Qt::ArrowCursor); -#endif -#ifndef QT_NO_TOOLTIP - setToolTip(tr("Close Tab")); -#endif - resize(sizeHint()); -} - -QSize CloseButton::sizeHint() const -{ - ensurePolished(); - int width = style()->pixelMetric(QStyle::PM_TabCloseIndicatorWidth, 0, this); - int height = style()->pixelMetric(QStyle::PM_TabCloseIndicatorHeight, 0, this); - return QSize(width, height); -} - -void CloseButton::enterEvent(QEvent *event) -{ - if (isEnabled()) - update(); - QAbstractButton::enterEvent(event); -} - -void CloseButton::leaveEvent(QEvent *event) -{ - if (isEnabled()) - update(); - QAbstractButton::leaveEvent(event); -} - -void CloseButton::paintEvent(QPaintEvent *) -{ - QPainter p(this); - QStyleOption opt; - opt.init(this); - opt.state |= QStyle::State_AutoRaise; - if (isEnabled() && underMouse() && !isChecked() && !isDown()) - opt.state |= QStyle::State_Raised; - if (isChecked()) - opt.state |= QStyle::State_On; - if (isDown()) - opt.state |= QStyle::State_Sunken; - - if (const QTabBar *tb = qobject_cast<const QTabBar *>(parent())) { - int index = tb->currentIndex(); - QTabBar::ButtonPosition position = (QTabBar::ButtonPosition)style()->styleHint(QStyle::SH_TabBar_CloseButtonPosition, 0, tb); - if (tb->tabButton(index, position) == this) - opt.state |= QStyle::State_Selected; - } - - style()->drawPrimitive(QStyle::PE_IndicatorTabClose, &opt, &p, this); -} - -QT_END_NAMESPACE - -#include "moc_qtabbar.cpp" - -#endif // QT_NO_TABBAR |