Basic UI rendering test

examples/display.py

@@ -0,0 +1,76 @@
+import time
+import ST7735
+import random
+from PIL import Image, ImageDraw, ImageFont
+
+display = ST7735.ST7735(
+    port=0,
+    cs=1,
+    dc=9,
+    backlight=12,
+    rotation=270,
+    spi_speed_hz=10000000
+)
+
+ramp = [
+    (192, 225, 254),  # Blue
+    (196, 255, 209),  # Green
+    (255, 243, 192)   # Yellow
+]
+
+display.begin()
+
+WIDTH, HEIGHT = display.width, display.height
+
+# Only the ALPHA channel is used from these images
+icon_drop = Image.open("icons/icon-drop.png")
+icon_nodrop = Image.open("icons/icon-nodrop.png")
+icon_rightarrow = Image.open("icons/icon-rightarrow.png")
+icon_snooze = Image.open("icons/icon-snooze.png")
+
+plants = []
+
+for x in range(1, 15):
+    plants.append(Image.open("icons/flat-{}.png".format(x)))
+
+CHANNEL_W = 40
+CHANNEL_M = 2
+
+print(WIDTH, HEIGHT)
+
+image = Image.new("RGBA", (WIDTH, HEIGHT), color=(255, 255, 255))
+draw = ImageDraw.Draw(image)
+
+draw.rectangle((0, 0, 19, 19), (32, 138, 251))
+draw.rectangle((0, HEIGHT - 19, 19, HEIGHT), (255, 255, 255))
+draw.rectangle((WIDTH - 20, 0, WIDTH, 19), (75, 166, 252))
+draw.rectangle((WIDTH - 20, HEIGHT - 19, WIDTH, HEIGHT), (254, 218, 80))
+
+draw.rectangle((21, 0, 58, HEIGHT), ramp[0])
+draw.rectangle((61, 0, 98, HEIGHT), ramp[1])
+draw.rectangle((101, 0, 138, HEIGHT), ramp[2])
+
+def icon(image, icon, position, color):
+    col = Image.new("RGBA", (20, 20), color=color)
+    image.paste(col, position, mask=icon)
+
+icon(image, icon_rightarrow, (0, 0), (255, 255, 255))
+icon(image, icon_snooze, (0, HEIGHT - 20), (129, 129, 129))
+icon(image, icon_drop, (WIDTH - 20, 0), (255, 255, 255))
+icon(image, icon_nodrop, (WIDTH - 20, HEIGHT - 20), (255, 255, 255))
+
+def plant(image, plant, channel):
+    x = [18, 58, 98][channel]
+    y = HEIGHT - plant.height
+    image.paste(plant, (x, y), mask=plant)
+
+picked = random.sample(plants, 3)
+
+for p in range(3):
+    plant(image, picked[p], p)
+
+image.save("test.png")
+
+while True:
+    display.display(image.convert("RGB"))
+    time.sleep(1.0)