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