#ifndef PREVIEW_IMAGEITEM_HXX #define PREVIEW_IMAGEITEM_HXX #include #include #include #include #include class QNetworkAccessManager; class PreviewImageItem : public QQuickItem { Q_OBJECT Q_PROPERTY(QUrl imageUrl READ imageUrl WRITE setImageUrl NOTIFY imageUrlChanged) Q_PROPERTY(QSize sourceSize READ sourceSize NOTIFY sourceSizeChanged) Q_PROPERTY(bool isLoading READ isLoading NOTIFY isLoadingChanged) Q_PROPERTY(float aspectRatio READ aspectRatio NOTIFY sourceSizeChanged) public: PreviewImageItem(QQuickItem* parent = nullptr); ~PreviewImageItem(); QSGNode* updatePaintNode(QSGNode *, UpdatePaintNodeData *) override; QUrl imageUrl() const; QSize sourceSize() const; static void setGlobalNetworkAccess(QNetworkAccessManager* netAccess); bool isLoading() const; float aspectRatio() const; signals: void imageUrlChanged(); void sourceSizeChanged(); void isLoadingChanged(); public slots: void setImageUrl(QUrl url); private slots: void onDownloadError(QNetworkReply::NetworkError errorCode); void onFinished(); private: void setImage(QImage image); void startDownload(); QUrl m_imageUrl; bool m_imageDirty = false; QImage m_image; unsigned int m_downloadRetryCount = 0; bool m_requestActive = false; }; #endif // PREVIEW_IMAGEITEM_HXX