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#ifndef GRAYIMAGE_H
#define GRAYIMAGE_H
#include <QQuickImageProvider>
#include <QNetworkAccessManager>
#include <QNetworkRequest>
#include <QNetworkReply>
#include <QPainter>
class AsyncImageResponse : public QQuickImageResponse
{
public:
AsyncImageResponse(const QString &id, const QSize &requestedSize)
: m_id(id), m_requestedSize(requestedSize)
{
connect(&netManager, &QNetworkAccessManager::finished, this, [this](QNetworkReply *rep) {
rep->deleteLater();
if (rep->error() != QNetworkReply::NoError)
{
qDebug() << "[NET] ERR: " << rep->errorString();
emit finished();
return;
}
QByteArray bytes = rep->readAll();
QImage img = QImage::fromData(bytes).convertToFormat(QImage::Format_Grayscale8);
_img = QImage(img.size(), QImage::Format_ARGB32);
_img.fill(Qt::transparent);
QPainter p(&_img);
p.setBrush(QBrush(img));
p.setPen(Qt::NoPen);
qreal radius = 8.0;
if (img.width() > 200) {
p.setRenderHint(QPainter::Antialiasing, true);
radius = 16.0;
}
p.drawRoundedRect(1, 1, img.width() - 2, img.height() - 2, radius, radius);
p.end();
emit finished();
});
netManager.get(QNetworkRequest(m_id));
}
QQuickTextureFactory *textureFactory() const
{
return QQuickTextureFactory::textureFactoryForImage(_img);
}
private:
QImage _img;
QString m_id;
QSize m_requestedSize;
QNetworkAccessManager netManager;
};
class GrayImageProvider : public QQuickAsyncImageProvider
{
public:
GrayImageProvider() {}
QQuickImageResponse *requestImageResponse(const QString &id, const QSize &requestedSize) override
{
AsyncImageResponse *response = new AsyncImageResponse(id, requestedSize);
return response;
}
};
#endif /* GRAYIMAGE_H */ |