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/****************************************************************************
**
** Copyright (C) 2017 Klaralvdalens Datakonsult AB (KDAB).
** Contact: https://www.qt.io/licensing/
**
** This file is part of the QtPDF module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:BSD$
** 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 https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** BSD License Usage
** Alternatively, you may use this file under the terms of the BSD license
** as follows:
**
** "Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are
** met:
** * Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** * Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in
** the documentation and/or other materials provided with the
** distribution.
** * Neither the name of The Qt Company Ltd nor the names of its
** contributors may be used to endorse or promote products derived
** from this software without specific prior written permission.
**
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
**
** $QT_END_LICENSE$
**
****************************************************************************/
#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));
}
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