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Add optional attribution to screenshot.

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This commit is contained in:
John Wiseman 2020-07-23 20:07:21 -07:00
parent 41d00d5707
commit 82baa4509b
4 changed files with 65 additions and 41 deletions
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26
package-lock.json generated
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@ -1787,6 +1787,32 @@
"setimmediate": "^1.0.4"
}
},
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"version": "0.2.1",
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"requires": {
"rimraf": "^3.0.0"
},
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"version": "3.0.2",
"resolved": "https://registry.npmjs.org/rimraf/-/rimraf-3.0.2.tgz",
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"requires": {
"glob": "^7.1.3"
}
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"tmp-promise": {
"version": "3.0.2",
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"requires": {
"tmp": "^0.2.0"
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"to-arraybuffer": {
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"resolved": "https://registry.npmjs.org/to-arraybuffer/-/to-arraybuffer-1.0.1.tgz",

1
package.json
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@ -14,6 +14,7 @@
"request": "^2.88.0",
"request-promise-native": "^1.0.8",
"sqlite": "^3.0.3",
"tmp-promise": "^3.0.2",
"twit": "^2.2.11",
"winston": "^3.2.1"
}

70
src/main/lemondronor/advisorycircular.cljs
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@ -3,6 +3,7 @@
["canvas" :as canvas]
["commander" :as commander]
["fs" :as fs]
["tmp-promise" :as tmp]
[cljs.pprint :as pprint]
[clojure.set :as set]
[clojure.string :as string]
@ -245,6 +246,31 @@
(:normalized-curviness ac)))
(defn add-attribution-to-image [path attribution]
(log-info "Adding attribution to %s: %s" path attribution)
(p/let [image (canvas/loadImage path)
canvas (canvas/createCanvas (.-width image) (.-height image))
ctx (.getContext canvas "2d")]
(.drawImage ctx image 0 0)
(set! (.-font ctx) "12px Impact")
(p/let [tmp-file (tmp/file)
text-metrics (.measureText ctx attribution)
w (.-width text-metrics)
h 12
[mw mh] [1 1]
[pw ph] [2 2]
text-x (- (.-width image) w pw mw)
text-y (- (.-height image) h ph mh)]
(.beginPath ctx)
(set! (.-fillStyle ctx) "rgba(128,128,128,0.7)")
(.rect ctx (- text-x pw) (- text-y ph) (+ w pw pw) (+ h ph ph))
(.fill ctx)
(set! (.-fillStyle ctx) "black")
(.fillText ctx attribution text-x (+ text-y h))
(util/write-stream-to-file (.createPNGStream canvas) (.-path tmp-file))
(fs/renameSync (.-path tmp-file) path))))
(defn map-screenshot
([icao lat lon now]
(map-screenshot icao lat lon now {}))
@ -260,6 +286,8 @@
;; :viewport {:width 1600 :height 800}
;; :clip {:width 1600 :height 800 :x 0 :y 0}
})]
(if-let [attribution (:attribution options)]
(add-attribution-to-image image-path attribution))
(log-verbose "%s: Got screenshot" icao)
image-path)))
@ -745,17 +773,8 @@
(def default-config-path "config.yaml")
(defn write-stream-to-file [stream path]
(p/promise
[resolve]
(let [out (fs/createWriteStream path)]
(.pipe stream out)
(.on out "finish" #(do (println "resolving") (resolve nil)))
(.on out "error" #(throw %)))))
(defn main [& args]
(-> commander
(-> commander
(.option "--lat <lat>" "Latitude of the circle of region of interest" parse-number)
(.option "--lon <lat>" "Longitude of the circle of the region of interest" parse-number)
(.option "--adsbx-url <url>" "ADSBX API url")
@ -770,38 +789,10 @@
(.option "--log-prefix <prefix>" "Log prefix to use")
(.option "--airport-geojson" "Generate airport GEOJSON and exit")
(.option "--create-aircraft-info-db-from-json <json path>" "Generate aircraft info DB and exit")
(.option "--test")
(.option "--icao <icao>")
(.option "--reg <reg>")
(.parse (.-argv js/process)))
(logging/set-log-prefix! (or (.-logPrefix commander) ""))
(reset! log-prefix (or (.-logPrefix commander) ""))
(p/try
(p/let [path (nth (.-argv js/process) 2)
_ (println path)
image (canvas/loadImage path)
canvas (canvas/createCanvas (.-width image) (.-height image))
ctx (.getContext canvas "2d")]
(.drawImage ctx image 0 0)
(set! (.-font ctx) "12px Impact")
(let [attribution "Tiles © Esri — Source: Esri, i-cubed, USDA, USGS, AEX, GeoEye, Getmapping, Aerogrid, IGN, IGP, UPR-EGP, and the GIS User Community" ;; "© OpenStreetMap contributors"
text-metrics (.measureText ctx attribution)
w (.-width text-metrics)
h 12
[mw mh] [1 1]
[pw ph] [2 2]
text-x (- (.-width image) w pw mw)
text-y (- (.-height image) h ph mh )]
(.beginPath ctx)
(set! (.-fillStyle ctx) "rgba(128,128,128,0.7)")
(.rect ctx (- text-x pw) (- text-y ph) (+ w pw pw) (+ h ph ph))
(.fill ctx)
(set! (.-fillStyle ctx) "black")
(.fillText ctx attribution text-x (+ text-y h)))
(write-stream-to-file (.createPNGStream canvas) "out.png")
(println "DONE!")
(.exit js/process 0))
(cond
(.-createAircraftInfoDbFromJson commander)
(create-aircraft-info-db (.-createAircraftInfoDbFromJson commander) (.-aircraftInfoDb commander))
@ -815,9 +806,6 @@
config (build-config base-config cli-config {})
geojson (airport-geojson config)]
(println (.stringify js/JSON (clj->js geojson) nil " ")))
(.-test commander)
(p/let [photo (airport-data-aircraft-photo (.-icao commander) (.-reg commander))]
(fs/writeFileSync "photo.jpg" photo))
:else
(let [start-time (current-time)]
;; If --config-path is specified, definitely try to read that

9
src/main/lemondronor/advisorycircular/util.cljs
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@ -113,3 +113,12 @@
([ms v]
(p/promise [resolve]
(js/setTimeout #(resolve v) ms))))
(defn write-stream-to-file [stream path]
(p/promise
[resolve reject]
(let [out (fs/createWriteStream path)]
(.pipe stream out)
(.on out "finish" #(resolve nil))
(.on out "error" #(reject %)))))