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Added grayscale image mode support because why not #41

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Merged
makermelissa merged 1 commit into from
Aug 18, 2020
Merged

Added grayscale image mode support because why not #41

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29 changes: 18 additions & 11 deletions adafruit_epd/epd.py
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Original file line number Diff line number Diff line change
Expand Up @@ -352,8 +352,6 @@ def image(self, image):
"""Set buffer to value of Python Imaging Library image. The image should
be in RGB mode and a size equal to the display size.
"""
if image.mode != "RGB":
raise ValueError("Image must be in mode RGB.")
imwidth, imheight = image.size
if imwidth != self.width or imheight != self.height:
raise ValueError(
Expand All @@ -368,12 +366,21 @@ def image(self, image):
# clear out any display buffers
self.fill(Adafruit_EPD.WHITE)

for y in range(image.size[1]):
for x in range(image.size[0]):
pixel = pix[x, y]
if (pixel[1] < 0x80 <= pixel[0]) and (pixel[2] < 0x80):
# reddish
self.pixel(x, y, Adafruit_EPD.RED)
elif (pixel[0] < 0x80) and (pixel[1] < 0x80) and (pixel[2] < 0x80):
# dark
self.pixel(x, y, Adafruit_EPD.BLACK)
if image.mode == "RGB": # RGB Mode
for y in range(image.size[1]):
for x in range(image.size[0]):
pixel = pix[x, y]
if (pixel[1] < 0x80 <= pixel[0]) and (pixel[2] < 0x80):
# reddish
self.pixel(x, y, Adafruit_EPD.RED)
elif (pixel[0] < 0x80) and (pixel[1] < 0x80) and (pixel[2] < 0x80):
# dark
self.pixel(x, y, Adafruit_EPD.BLACK)
elif image.mode == "L": # Grayscale
for y in range(image.size[1]):
for x in range(image.size[0]):
pixel = pix[x, y]
if pixel < 0x80:
self.pixel(x, y, Adafruit_EPD.BLACK)
else:
raise ValueError("Image must be in mode RGB or mode L.")