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Diffstat (limited to 'src/plugins/help/openpagesswitcher.cpp')
-rw-r--r-- | src/plugins/help/openpagesswitcher.cpp | 151 |
1 files changed, 151 insertions, 0 deletions
diff --git a/src/plugins/help/openpagesswitcher.cpp b/src/plugins/help/openpagesswitcher.cpp new file mode 100644 index 00000000000..65b1ad51bcf --- /dev/null +++ b/src/plugins/help/openpagesswitcher.cpp @@ -0,0 +1,151 @@ +/************************************************************************** +** +** This file is part of Qt Creator +** +** Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies). +** +** Contact: Nokia Corporation ([email protected]) +** +** Commercial Usage +** +** Licensees holding valid Qt Commercial licenses may use this file in +** accordance with the Qt Commercial License Agreement provided with the +** Software or, alternatively, in accordance with the terms contained in +** a written agreement between you and Nokia. +** +** 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. +** +** If you are unsure which license is appropriate for your use, please +** contact the sales department at http://qt.nokia.com/contact. +** +**************************************************************************/ + +#include "openpagesswitcher.h" + +#include "centralwidget.h" +#include "openpagesmodel.h" +#include "openpageswidget.h" + +#include <QtCore/QEvent> + +#include <QtGui/QKeyEvent> + +using namespace Help::Internal; + +const int gMargin = 4; +const int gWidth = 300; +const int gHeight = 200; + +OpenPagesSwitcher::OpenPagesSwitcher(OpenPagesModel *model) + : QWidget(0, Qt::Popup) + , m_openPagesModel(model) +{ + resize(gWidth, gHeight); + + m_openPagesWidget = new OpenPagesWidget(m_openPagesModel, this); + + m_openPagesWidget->allowContextMenu(false); + m_openPagesWidget->installEventFilter(this); + m_openPagesWidget->setTextElideMode(Qt::ElideMiddle); + m_openPagesWidget->setGeometry(gMargin, gMargin, gWidth - 2 * gMargin, + gHeight - 2 * gMargin); + + connect(m_openPagesWidget, SIGNAL(closePage(QModelIndex)), this, + SIGNAL(closePage(QModelIndex))); + connect(m_openPagesWidget, SIGNAL(setCurrentPage(QModelIndex)), this, + SIGNAL(setCurrentPage(QModelIndex))); +} + +OpenPagesSwitcher::~OpenPagesSwitcher() +{ +} + +void OpenPagesSwitcher::gotoNextPage() +{ + selectPageUpDown(-1); +} + +void OpenPagesSwitcher::gotoPreviousPage() +{ + selectPageUpDown(1); +} + +void OpenPagesSwitcher::selectAndHide() +{ + setVisible(false); + emit setCurrentPage(m_openPagesWidget->currentIndex()); +} + +void OpenPagesSwitcher::selectCurrentPage() +{ + m_openPagesWidget->selectCurrentPage(); +} + +void OpenPagesSwitcher::setVisible(bool visible) +{ + QWidget::setVisible(visible); + if (visible) + setFocus(); +} + +void OpenPagesSwitcher::focusInEvent(QFocusEvent *event) +{ + Q_UNUSED(event) + m_openPagesWidget->setFocus(); +} + +bool OpenPagesSwitcher::eventFilter(QObject *object, QEvent *event) +{ + if (object == m_openPagesWidget) { + if (event->type() == QEvent::KeyPress) { + QKeyEvent *ke = static_cast<QKeyEvent*>(event); + if (ke->key() == Qt::Key_Escape) { + setVisible(false); + return true; + } + + const int key = ke->key(); + if (key == Qt::Key_Return || key == Qt::Key_Enter || key == Qt::Key_Space) { + emit setCurrentPage(m_openPagesWidget->currentIndex()); + return true; + } + } else if (event->type() == QEvent::KeyRelease) { + QKeyEvent *ke = static_cast<QKeyEvent*>(event); + if (ke->modifiers() == 0 + /*HACK this is to overcome some event inconsistencies between platforms*/ + || (ke->modifiers() == Qt::AltModifier + && (ke->key() == Qt::Key_Alt || ke->key() == -1))) { + selectAndHide(); + } + } + } + return QWidget::eventFilter(object, event); +} + +void OpenPagesSwitcher::selectPageUpDown(int summand) +{ + const int pageCount = m_openPagesModel->rowCount(); + if (pageCount < 2) + return; + + const QModelIndexList &list = m_openPagesWidget->selectionModel()->selectedIndexes(); + if (list.isEmpty()) + return; + + QModelIndex index = list.first(); + if (!index.isValid()) + return; + + index = m_openPagesModel->index((index.row() + summand + pageCount) % pageCount, 0); + if (index.isValid()) { + m_openPagesWidget->setCurrentIndex(index); + m_openPagesWidget->scrollTo(index, QAbstractItemView::PositionAtCenter); + } +} |