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♻️ Change pixel overlay inner workings

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Aitor 2023-08-25 16:23:32 +02:00 • committed by Andrey Antukh
parent 537435372a
commit 9ce8c2d580
4 changed files with 88 additions and 141 deletions
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25
frontend/src/app/rasterizer.cljs
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@ -178,22 +178,35 @@
(constantly nil)))))
(defn- render
"Renders a thumbnail using it's SVG and returns an ArrayBuffer of the image."
(defn- render-image-bitmap
"Renders a thumbnail using it's SVG and returns an ImageBitmap of the image."
[payload]
(let [data (unchecked-get payload "data")
styles (unchecked-get payload "styles")
width (d/nilv (unchecked-get payload "width") 300)]
width (d/nilv (unchecked-get payload "width") 300)
quality (d/nilv (unchecked-get payload "quality") "medium")]
(->> (svg-prepare data styles width)
(rx/map #(wapi/create-blob % "image/svg+xml"))
(rx/map wapi/create-uri)
(rx/mapcat (fn [uri]
(->> (create-image uri)
(rx/mapcat #(wapi/create-image-bitmap % #js {:resizeWidth width
:resizeQuality "medium"}))
(rx/tap #(wapi/revoke-uri uri)))))
:resizeQuality quality}))
(rx/tap #(wapi/revoke-uri uri))))))))
(rx/mapcat bitmap->blob))))
(defn- render-blob
"Renders a thumbnail using it's SVG and returns a Blob of the image."
[payload]
(->> (render-image-bitmap payload)
(rx/mapcat bitmap->blob)))
(defn- render
"Renders a thumbnail and returns a stream."
[payload]
(let [result (d/nilv (unchecked-get payload "result") "blob")]
(case result
"image-bitmap" (render-image-bitmap payload)
(render-blob payload))))
(defn- on-message
"Handles messages from the main thread."