lots of changes

Plugins/ZShell/Internal/cachingimagemanager.hpp

@@ -0,0 +1,65 @@
+#pragma once
+
+#include <QtQuick/qquickitem.h>
+#include <qobject.h>
+#include <qqmlintegration.h>
+
+namespace ZShell::internal {
+
+class CachingImageManager : public QObject {
+    Q_OBJECT
+    QML_ELEMENT
+
+    Q_PROPERTY(QQuickItem* item READ item WRITE setItem NOTIFY itemChanged REQUIRED)
+    Q_PROPERTY(QUrl cacheDir READ cacheDir WRITE setCacheDir NOTIFY cacheDirChanged REQUIRED)
+
+    Q_PROPERTY(QString path READ path WRITE setPath NOTIFY pathChanged)
+    Q_PROPERTY(QUrl cachePath READ cachePath NOTIFY cachePathChanged)
+
+public:
+    explicit CachingImageManager(QObject* parent = nullptr)
+        : QObject(parent)
+        , m_item(nullptr) {}
+
+    [[nodiscard]] QQuickItem* item() const;
+    void setItem(QQuickItem* item);
+
+    [[nodiscard]] QUrl cacheDir() const;
+    void setCacheDir(const QUrl& cacheDir);
+
+    [[nodiscard]] QString path() const;
+    void setPath(const QString& path);
+
+    [[nodiscard]] QUrl cachePath() const;
+
+    Q_INVOKABLE void updateSource();
+    Q_INVOKABLE void updateSource(const QString& path);
+
+signals:
+    void itemChanged();
+    void cacheDirChanged();
+
+    void pathChanged();
+    void cachePathChanged();
+    void usingCacheChanged();
+
+private:
+    QString m_shaPath;
+
+    QQuickItem* m_item;
+    QUrl m_cacheDir;
+
+    QString m_path;
+    QUrl m_cachePath;
+
+    QMetaObject::Connection m_widthConn;
+    QMetaObject::Connection m_heightConn;
+
+    [[nodiscard]] qreal effectiveScale() const;
+    [[nodiscard]] QSize effectiveSize() const;
+
+    void createCache(const QString& path, const QString& cache, const QString& fillMode, const QSize& size) const;
+    [[nodiscard]] static QString sha256sum(const QString& path);
+};
+
+} // namespace ZShell::internal