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// Copyright (C) 2022 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 "qquickpdfpageimage_p.h"
#include "qquickpdfdocument_p.h"
#include <private/qpdffile_p.h>
#include <QtQuick/private/qquickimage_p_p.h>
QT_BEGIN_NAMESPACE
Q_LOGGING_CATEGORY(qLcImg, "qt.pdf.image")
/*!
\qmltype PdfPageImage
//! \instantiates QQuickPdfPageImage
\inqmlmodule QtQuick.Pdf
\ingroup pdf
\inherits Image
\brief Displays one page from a PDF document.
\since 6.4
The PdfPageImage type is an Image specialized to render a page from a PDF document.
*/
class QQuickPdfPageImagePrivate: public QQuickImagePrivate
{
public:
QQuickPdfPageImagePrivate() : QQuickImagePrivate() {}
QQuickPdfDocument *doc = nullptr;
};
QQuickPdfPageImage::QQuickPdfPageImage(QQuickItem *parent)
: QQuickImage(*(new QQuickPdfPageImagePrivate), parent)
{
}
/*!
\internal
*/
QQuickPdfPageImage::~QQuickPdfPageImage()
{
Q_D(QQuickPdfPageImage);
// cancel any async rendering job that is running on my behalf
d->pix.clear();
}
/*!
\qmlproperty PdfDocument PdfPageImage::document
This property holds the PDF document from which to render an image.
*/
void QQuickPdfPageImage::setDocument(QQuickPdfDocument *document)
{
Q_D(QQuickPdfPageImage);
if (d->doc == document)
return;
if (d->doc)
disconnect(d->doc->document(), &QPdfDocument::statusChanged, this, &QQuickPdfPageImage::documentStatusChanged);
d->doc = document;
if (document) {
connect(document->document(), &QPdfDocument::statusChanged, this, &QQuickPdfPageImage::documentStatusChanged);
if (document->document()->status() == QPdfDocument::Status::Ready)
setSource(document->resolvedSource()); // calls load()
}
emit documentChanged();
}
QQuickPdfDocument *QQuickPdfPageImage::document() const
{
Q_D(const QQuickPdfPageImage);
return d->doc;
}
void QQuickPdfPageImage::load()
{
Q_D(QQuickPdfPageImage);
QUrl url = source();
if (!d->doc || !d->doc->carrierFile()) {
if (!url.isEmpty()) {
qmlWarning(this) << "document property not set: falling back to inefficient loading of " << url;
QQuickImageBase::load();
}
return;
}
if (url != d->doc->resolvedSource()) {
url = d->doc->resolvedSource();
qmlWarning(this) << "document and source properties in conflict: preferring document source " << url;
}
auto carrierFile = d->doc->carrierFile();
static int thisRequestProgress = -1;
static int thisRequestFinished = -1;
if (thisRequestProgress == -1) {
thisRequestProgress =
QQuickImageBase::staticMetaObject.indexOfSlot("requestProgress(qint64,qint64)");
thisRequestFinished =
QQuickImageBase::staticMetaObject.indexOfSlot("requestFinished()");
}
d->pix.loadImageFromDevice(qmlEngine(this), carrierFile, url,
d->sourceClipRect.toRect(), d->sourcesize * d->devicePixelRatio,
QQuickImageProviderOptions(), d->currentFrame, d->frameCount);
qCDebug(qLcImg) << "loading page" << d->currentFrame << "of" << d->frameCount
<< "from" << carrierFile->fileName() << "status" << d->pix.status();
switch (d->pix.status()) {
case QQuickPixmap::Ready:
pixmapChange();
break;
case QQuickPixmap::Loading:
d->pix.connectFinished(this, thisRequestFinished);
d->pix.connectDownloadProgress(this, thisRequestProgress);
if (d->progress != 0.0) {
d->progress = 0.0;
emit progressChanged(d->progress);
}
if (d->status != Loading) {
d->status = Loading;
emit statusChanged(d->status);
}
break;
default:
qCDebug(qLcImg) << "unexpected status" << d->pix.status();
break;
}
}
void QQuickPdfPageImage::documentStatusChanged()
{
Q_D(QQuickPdfPageImage);
const auto status = d->doc->document()->status();
qCDebug(qLcImg) << "document status" << status;
if (status == QPdfDocument::Status::Ready)
setSource(d->doc->resolvedSource()); // calls load()
}
QT_END_NAMESPACE
#include "moc_qquickpdfpageimage_p.cpp"
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