| /**************************************************************************** |
| ** |
| ** 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 |
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| ** 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)); |
| } |