77 lines
2.1 KiB
C++
77 lines
2.1 KiB
C++
#include "imageprovider.h"
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#include <QtCore/QWaitCondition>
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#include <QtCore/QDebug>
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#include <QMetaObject>
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#include "jobs/mediathumbnailjob.h"
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#include "connection.h"
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using QMatrixClient::MediaThumbnailJob;
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ImageProviderConnection::ImageProviderConnection(QObject* parent) : QObject(parent) {
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}
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ImageProviderConnection::~ImageProviderConnection() {
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}
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ImageProvider::ImageProvider(QObject* parent)
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: QQuickImageProvider(QQmlImageProviderBase::Image,
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QQmlImageProviderBase::ForceAsynchronousImageLoading)
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{
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#if (QT_VERSION < QT_VERSION_CHECK(5, 10, 0))
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qRegisterMetaType<MediaThumbnailJob*>();
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#endif
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m_connection = new ImageProviderConnection();
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}
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QImage ImageProvider::requestImage(const QString& id,
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QSize* pSize, const QSize& requestedSize)
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{
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if (!id.startsWith("mxc://"))
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{
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qWarning() << "ImageProvider: won't fetch an invalid id:" << id
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<< "doesn't follow server/mediaId pattern";
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return {};
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}
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QUrl mxcUri { id };
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qDebug() << "ImageProvider::requestImage:" << mxcUri.toString();
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MediaThumbnailJob* job = nullptr;
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QReadLocker locker(&m_lock);
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#if (QT_VERSION >= QT_VERSION_CHECK(5, 10, 0))
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QMetaObject::invokeMethod(m_connection,
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[=] { return m_connection->getConnection()->getThumbnail(mxcUri, requestedSize); },
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Qt::BlockingQueuedConnection, &job);
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#else
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QMetaObject::invokeMethod(m_connection, "getThumbnail",
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Qt::BlockingQueuedConnection, Q_RETURN_ARG(MediaThumbnailJob*, job),
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Q_ARG(QUrl, mxcUri), Q_ARG(QSize, requestedSize));
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#endif
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if (!job)
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{
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qDebug() << "ImageProvider: failed to send a request";
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return {};
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}
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QImage result;
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{
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QWaitCondition condition; // The most compact way to block on a signal
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job->connect(job, &MediaThumbnailJob::finished, job, [&] {
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result = job->thumbnail();
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condition.wakeAll();
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});
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condition.wait(&m_lock);
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}
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if(pSize != nullptr)
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*pSize = result.size();
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return result;
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}
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