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quickshell/Widgets/CachingImage.qml

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+import QtQuick
+import Quickshell.Io
+import qs.Common
+
+Image {
+    id: root
+
+    property string imagePath: ""
+    property string imageHash: ""
+    property int maxCacheSize: 512
+    readonly property string cachePath: imageHash ? `${Paths.stringify(Paths.imagecache)}/${imageHash}@${maxCacheSize}x${maxCacheSize}.png` : ""
+
+    asynchronous: true
+    fillMode: Image.PreserveAspectCrop
+    sourceSize.width: maxCacheSize
+    sourceSize.height: maxCacheSize
+    smooth: true
+    onImagePathChanged: {
+        if (!imagePath) {
+            source = ""
+            imageHash = ""
+            return
+        }
+        hashProcess.command = ["sha256sum", Paths.strip(imagePath)]
+        hashProcess.running = true
+    }
+    onCachePathChanged: {
+        if (!imageHash || !cachePath)
+            return
+
+        Paths.mkdir(Paths.imagecache)
+        source = cachePath
+    }
+    onStatusChanged: {
+        if (source == cachePath && status === Image.Error) {
+            source = imagePath
+            return
+        }
+        if (source != imagePath || status !== Image.Ready || !imageHash || !cachePath)
+            return
+
+        Paths.mkdir(Paths.imagecache)
+        const grabPath = cachePath
+        if (visible && width > 0 && height > 0 && Window.window && Window.window.visible)
+            grabToImage(res => {
+                            return res.saveToFile(grabPath)
+                        })
+    }
+
+    Process {
+        id: hashProcess
+
+        stdout: StdioCollector {
+            onStreamFinished: root.imageHash = text.split(" ")[0]
+        }
+    }
+}