better wallpaper cropping on load, cache images to disk and fix image aspect ratio from creating black bars

Plugins/ZShell/Internal/wallpaperimage.hpp

@@ -0,0 +1,95 @@
+#pragma once
+
+#include <QQuickItem>
+#include <QImage>
+#include <QUrl>
+#include <QSGTexture>
+#include <QFutureWatcher>
+#include <QtQml/qqml.h>
+
+namespace ZShell::internal {
+
+class WallpaperImage : public QQuickItem {
+Q_OBJECT
+QML_NAMED_ELEMENT(WallpaperImage)
+Q_PROPERTY(QUrl source READ source WRITE setSource NOTIFY sourceChanged)
+Q_PROPERTY(QSize screenResolution READ screenResolution WRITE setScreenResolution NOTIFY screenResolutionChanged)
+Q_PROPERTY(qreal zoom READ zoom WRITE setZoom NOTIFY zoomChanged)
+
+Q_PROPERTY(qreal cropX READ cropX WRITE setCropX NOTIFY cropXChanged)
+Q_PROPERTY(qreal cropY READ cropY WRITE setCropY NOTIFY cropYChanged)
+Q_PROPERTY(qreal cropWidth READ cropWidth WRITE setCropWidth NOTIFY cropWidthChanged)
+Q_PROPERTY(qreal cropHeight READ cropHeight WRITE setCropHeight NOTIFY cropHeightChanged)
+
+public:
+explicit WallpaperImage(QQuickItem *parent = nullptr);
+~WallpaperImage() override;
+
+QUrl source() const {
+	return m_source;
+}
+void setSource(const QUrl &source);
+
+QSize screenResolution() const {
+	return m_screenResolution;
+}
+void setScreenResolution(const QSize &screenResolution);
+
+qreal zoom() const {
+	return m_zoom;
+}
+void setZoom(qreal zoom);
+
+qreal cropX() const {
+	return m_cropX;
+}
+void setCropX(qreal x);
+
+qreal cropY() const {
+	return m_cropY;
+}
+void setCropY(qreal y);
+
+qreal cropWidth() const {
+	return m_cropWidth;
+}
+void setCropWidth(qreal w);
+
+qreal cropHeight() const {
+	return m_cropHeight;
+}
+void setCropHeight(qreal h);
+
+protected:
+QSGNode *updatePaintNode(QSGNode *oldNode, UpdatePaintNodeData *updatePaintNodeData) override;
+
+signals:
+void sourceChanged();
+void screenResolutionChanged();
+void zoomChanged();
+void cropXChanged();
+void cropYChanged();
+void cropWidthChanged();
+void cropHeightChanged();
+
+private:
+void loadImage();
+void handleImageLoaded();
+QString getCacheFilePath() const;
+
+QUrl m_source;
+QSize m_screenResolution;
+qreal m_zoom = 1.0;
+
+qreal m_cropX = 0.0;
+qreal m_cropY = 0.0;
+qreal m_cropWidth = 1.0;
+qreal m_cropHeight = 1.0;
+
+QImage m_image;
+QSGTexture *m_texture = nullptr;
+bool m_textureDirty = false;
+QFutureWatcher<QImage> m_imageWatcher;
+};
+
+} // namespace ZShell::internal