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Allow draw_image to draw from a stream of bytes. #4

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Allow draw_image to draw from a stream of bytes. #4

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12 changes: 9 additions & 3 deletions ili9341.py
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Original file line number Diff line number Diff line change
Expand Up @@ -3,6 +3,7 @@
from math import cos, sin, pi, radians
from sys import implementation
import ustruct
from uio import BytesIO


def color565(r, g, b):
Expand Down Expand Up @@ -315,12 +316,13 @@ def draw_hline(self, x, y, w, color):
return
line = color.to_bytes(2, 'big') * w
self.block(x, y, x + w - 1, y, line)

def draw_image(self, path, x=0, y=0, w=320, h=240):
def draw_image(self, path=None, bytes=None, x=0, y=0, w=320, h=240):
"""Draw image from flash.

Args:
path (string): Image file path.
bytes (bytes): Image bytes.
x (int): X coordinate of image left. Default is 0.
y (int): Y coordinate of image top. Default is 0.
w (int): Width of image. Default is 320.
Expand All @@ -330,7 +332,11 @@ def draw_image(self, path, x=0, y=0, w=320, h=240):
y2 = y + h - 1
if self.is_off_grid(x, y, x2, y2):
return
with open(path, "rb") as f:

if (path is None and bytes is None) or (path is not None and bytes is not None):
return

with open(path, "rb") if path else BytesIO(bytes) as f:
chunk_height = 1024 // w
chunk_count, remainder = divmod(h, chunk_height)
chunk_size = chunk_height * w * 2
Expand Down