Switching from using JPEG to JSON files

micropython/examples/inky_frame/inkylauncher/random_joke.py

@@ -1,7 +1,8 @@
 import gc
 import random
-import jpegdec
 from urllib import urequest
+from ujson import load
+import qrcode
 
 gc.collect()  # We're really gonna need that RAM!
 
@@ -13,19 +14,39 @@ HEIGHT = 0
 FILENAME = "random-joke.jpg"
 
 JOKE_IDS = "https://pimoroni.github.io/feed2image/jokeapi-ids.txt"
-JOKE_IMG = "https://pimoroni.github.io/feed2image/jokeapi-{}-{}x{}.jpg"
+JOKE_IMG = "https://pimoroni.github.io/feed2image/jokeapi-{}.json"
 
 UPDATE_INTERVAL = 60
 
 gc.collect()  # Claw back some RAM!
 
-
 # We don't have the RAM to store the list of Joke IDs in memory.
 # the first line of `jokeapi-ids.txt` is a COUNT of IDs.
 # Grab it, then pick a random line between 0 and COUNT.
 # Seek to that line and ...y'know... there's our totally random joke ID
 
+joke = []
+
+
+def measure_qr_code(size, code):
+    w, h = code.get_size()
+    module_size = int(size / w)
+    return module_size * w, module_size
+
+
+def draw_qr_code(ox, oy, size, code):
+    size, module_size = measure_qr_code(size, code)
+    graphics.set_pen(1)
+    graphics.rectangle(ox, oy, size, size)
+    graphics.set_pen(0)
+    for x in range(size):
+        for y in range(size):
+            if code.get_module(x, y):
+                graphics.rectangle(ox + x * module_size, oy + y * module_size, module_size, module_size)
+
+
 def update():
+    global joke
 
     try:
         socket = urequest.urlopen(JOKE_IDS)
@@ -49,34 +70,48 @@ def update():
 
     print("Random joke ID: {}".format(random_joke_id))
 
-    url = JOKE_IMG.format(random_joke_id, WIDTH, HEIGHT)
+    url = JOKE_IMG.format(random_joke_id)
 
-    socket = urequest.urlopen(url)
+    gc.collect()
 
-    # Stream the image data from the socket onto disk in 1024 byte chunks
-    # the 600x448-ish jpeg will be roughly ~24k, we really don't have the RAM!
-    data = bytearray(1024)
-    with open(FILENAME, "wb") as f:
-        while True:
-            if socket.readinto(data) == 0:
-                break
-            f.write(data)
-    socket.close()
-    del data
-    gc.collect()  # We really are tight on RAM!
+    # Grab the data
+    try:
+        socket = urequest.urlopen(url)
+        gc.collect()
+        j = load(socket)
+        socket.close()
+        joke = j
+        del j
+        gc.collect()
+    except OSError as e:
+        print(e)
 
 
 def draw():
-    jpeg = jpegdec.JPEG(graphics)
-    gc.collect()  # For good measure...
 
+    code = qrcode.QRCode()
     graphics.set_pen(1)
     graphics.clear()
 
-    try:
-        jpeg.open_file(FILENAME)
-        jpeg.decode()
-    except OSError:
+    if joke:
+        if joke['type'] == "single":
+            graphics.set_pen(4)
+            graphics.text(joke['joke'], 10, 10, WIDTH - 75, 5)
+        if joke['type'] == "twopart":
+            graphics.set_pen(4)
+            graphics.text(joke['setup'], 10, 10, WIDTH - 75, 5)
+            graphics.set_pen(3)
+            graphics.text(joke['delivery'], 10, 290, WIDTH - 75, 5)
+
+        graphics.set_pen(0)
+        # Donate link QR
+        code.set_text("https://github.com/sponsors/Sv443")
+        draw_qr_code(WIDTH - 75, HEIGHT - 75, 75, code)
+
+        graphics.text("curated by jokeapi.dev", 10, HEIGHT - 15, WIDTH, 1)
+        graphics.text("donate <3", WIDTH - 65, HEIGHT - 12, WIDTH, 1)
+
+    else:
         graphics.set_pen(4)
         graphics.rectangle(0, (HEIGHT // 2) - 20, WIDTH, 40)
         graphics.set_pen(1)