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+/****************************************************************************
+**
+** Copyright (C) 2017 Klaralvdalens Datakonsult AB (KDAB).
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the QtPDF module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL3$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see http://www.qt.io/terms-conditions. For further
+** information use the contact form at http://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPLv3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or later as published by the Free
+** Software Foundation and appearing in the file LICENSE.GPL included in
+** the packaging of this file. Please review the following information to
+** ensure the GNU General Public License version 2.0 requirements will be
+** met: http://www.gnu.org/licenses/gpl-2.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "pageselector.h"
+
+#include <QHBoxLayout>
+#include <QLabel>
+#include <QLineEdit>
+#include <QPdfPageNavigation>
+#include <QToolButton>
+
+PageSelector::PageSelector(QWidget *parent)
+ : QWidget(parent)
+ , m_pageNavigation(nullptr)
+{
+ QHBoxLayout *layout = new QHBoxLayout(this);
+
+ m_previousPageButton = new QToolButton(this);
+ m_previousPageButton->setText("<");
+ m_previousPageButton->setEnabled(false);
+
+ m_pageNumberEdit = new QLineEdit(this);
+ m_pageNumberEdit->setAlignment(Qt::AlignRight);
+
+ m_pageCountLabel = new QLabel(this);
+ m_pageCountLabel->setText("0");
+
+ m_nextPageButton = new QToolButton(this);
+ m_nextPageButton->setText(">");
+ m_nextPageButton->setEnabled(false);
+
+ layout->addWidget(m_previousPageButton);
+ layout->addWidget(m_pageNumberEdit);
+ layout->addWidget(m_pageCountLabel);
+ layout->addWidget(m_nextPageButton);
+}
+
+void PageSelector::setPageNavigation(QPdfPageNavigation *pageNavigation)
+{
+ m_pageNavigation = pageNavigation;
+
+ connect(m_previousPageButton, &QToolButton::clicked, m_pageNavigation, &QPdfPageNavigation::goToPreviousPage);
+ connect(m_pageNavigation, &QPdfPageNavigation::canGoToPreviousPageChanged, m_previousPageButton, &QToolButton::setEnabled);
+
+ connect(m_pageNavigation, &QPdfPageNavigation::currentPageChanged, this, &PageSelector::onCurrentPageChanged);
+ connect(m_pageNavigation, &QPdfPageNavigation::pageCountChanged, this, [this](int pageCount){ m_pageCountLabel->setText(QString::fromLatin1("/ %1").arg(pageCount)); });
+
+ connect(m_pageNumberEdit, &QLineEdit::editingFinished, this, &PageSelector::pageNumberEdited);
+
+ connect(m_nextPageButton, &QToolButton::clicked, m_pageNavigation, &QPdfPageNavigation::goToNextPage);
+ connect(m_pageNavigation, &QPdfPageNavigation::canGoToNextPageChanged, m_nextPageButton, &QToolButton::setEnabled);
+
+ onCurrentPageChanged(m_pageNavigation->currentPage());
+}
+
+void PageSelector::onCurrentPageChanged(int page)
+{
+ if (m_pageNavigation->pageCount() == 0)
+ m_pageNumberEdit->setText(QString::number(0));
+ else
+ m_pageNumberEdit->setText(QString::number(page + 1));
+}
+
+void PageSelector::pageNumberEdited()
+{
+ if (!m_pageNavigation)
+ return;
+
+ const QString text = m_pageNumberEdit->text();
+
+ bool ok = false;
+ const int pageNumber = text.toInt(&ok);
+
+ if (!ok)
+ onCurrentPageChanged(m_pageNavigation->currentPage());
+ else
+ m_pageNavigation->setCurrentPage(qBound(0, pageNumber - 1, m_pageNavigation->pageCount() - 1));
+}