qquickpdfsearchmodel.cpp

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// Copyright (C) 2020 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
 
#include "qquickpdfsearchmodel_p.h"
#include <QtCore/qloggingcategory.h>
 
QT_BEGIN_NAMESPACE
 
Q_LOGGING_CATEGORY(qLcSearch, "qt.pdf.search")
 
 
 
QQuickPdfSearchModel::QQuickPdfSearchModel(QObject *parent)
    : QPdfSearchModel(parent)
{
    connect(this, &QPdfSearchModel::searchStringChanged,
            this, &QQuickPdfSearchModel::onResultsChanged);
}
 
QQuickPdfSearchModel::~QQuickPdfSearchModel() = default;
 
QQuickPdfDocument *QQuickPdfSearchModel::document() const
{
    return m_quickDocument;
}
 
void QQuickPdfSearchModel::setDocument(QQuickPdfDocument *document)
{
    if (document == m_quickDocument || !document)
        return;
 
    m_quickDocument = document;
    QPdfSearchModel::setDocument(document->document());
}
 
QList<QPolygonF> QQuickPdfSearchModel::currentResultBoundingPolygons() const
{
    QList<QPolygonF> ret;
    const auto result = currentResultLink();
    if (result.page() != m_currentPage)
        return ret;
    for (auto rect : result.rectangles())
        ret << QPolygonF(rect);
    return ret;
}
 
QRectF QQuickPdfSearchModel::currentResultBoundingRect() const
{
    QRectF ret;
    const auto result = currentResultLink();
    if (result.page() != m_currentPage)
        return ret;
    auto rects = result.rectangles();
    if (!rects.isEmpty()) {
        ret = rects.takeFirst();
        for (auto rect : rects)
            ret = ret.united(rect);
    }
    return ret;
}
 
void QQuickPdfSearchModel::onResultsChanged()
{
    emit currentPageBoundingPolygonsChanged();
    emit currentResultBoundingPolygonsChanged();
}
 
QList<QPolygonF> QQuickPdfSearchModel::currentPageBoundingPolygons() const
{
    return const_cast<QQuickPdfSearchModel *>(this)->boundingPolygonsOnPage(m_currentPage);
}
 
QList<QPolygonF> QQuickPdfSearchModel::boundingPolygonsOnPage(int page)
{
    if (!document() || searchString().isEmpty() || page < 0 || page > document()->document()->pageCount())
        return {};
 
    updatePage(page);
 
    QList<QPolygonF> ret;
    const auto m = QPdfSearchModel::resultsOnPage(page);
    for (const auto &result : m) {
        for (const auto &rect : result.rectangles())
            ret << QPolygonF(rect);
    }
 
    return ret;
}
 
void QQuickPdfSearchModel::setCurrentPage(int currentPage)
{
    if (m_currentPage == currentPage || !document())
        return;
 
    const auto pageCount = document()->document()->pageCount();
    if (currentPage < 0)
        currentPage = pageCount - 1;
    else if (currentPage >= pageCount)
        currentPage = 0;
 
    m_currentPage = currentPage;
    if (!m_suspendSignals) {
        emit currentPageChanged();
        onResultsChanged();
    }
}
 
void QQuickPdfSearchModel::setCurrentResult(int currentResult)
{
    if (m_currentResult == currentResult)
        return;
 
    const int currentResultWas = m_currentResult;
    const int currentPageWas = m_currentPage;
    const int resultCount = rowCount({});
 
    // wrap around at the ends
    if (currentResult >= resultCount) {
        currentResult = 0;
    } else if (currentResult < 0) {
        currentResult = resultCount - 1;
    }
 
    const QPdfLink link = resultAtIndex(currentResult);
    if (link.isValid()) {
        setCurrentPage(link.page());
        m_currentResult = currentResult;
        emit currentResultChanged();
        emit currentResultLinkChanged();
        emit currentResultBoundingPolygonsChanged();
        emit currentResultBoundingRectChanged();
        qCDebug(qLcSearch) << "currentResult was" << currentResultWas
                      << "requested" << currentResult << "on page" << currentPageWas
                      << "->" << m_currentResult << "on page" << m_currentPage;
    } else {
        qWarning() << "failed to find result" << currentResult << "in range 0 ->" << resultCount;
    }
}
 
QPdfLink QQuickPdfSearchModel::currentResultLink() const
{
    return resultAtIndex(m_currentResult);
}
 
QT_END_NAMESPACE
 
#include "moc_qquickpdfsearchmodel_p.cpp"