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- import epaper
- import microbmp
- import time
- import random
- import os
- import storage
- import gc
-
- epd_colormap = [
- [0x00, 0x00, 0x00], # black
- [0xff, 0xff, 0xff], # white
- [0x00, 0x90, 0x10], # green
- [0x00, 0x00, 0xee], # blue
- [0xff, 0x00, 0x00], # red
- [0xff, 0xdd, 0x00], # yellow
- [0xff, 0x77, 0x00], # orange
- ]
-
- max_free_height = 200
-
- def init_display():
- #print("ePaper init ", str(time.localtime()))
- epd = epaper.EPD_5in65()
- epd.fill(epd.White)
- return epd
-
- def draw_image(epd, filename):
- global epd_colormap
- global free_x, free_y, free_width, free_height
- offset_x = 0
- offset_y = 0
- free_x = 0
- free_y = 0
- free_width = 0
- free_height = 0
- color_map = {}
- def header_callback(header):
- #print("header callback: ", str(header))
- #global epd
- global offset_x, offset_y
- global free_x, free_y, free_width, free_height
- global max_free_height
- w = header[0]
- h = header[1]
- rest_x = (epd.width - w)
- rest_y = (epd.height - h)
- free_x = 0
- free_y = max(h, epd.height - max_free_height)
- free_width = epd.width
- free_height = min(rest_y, max_free_height)
- offset_x = rest_x//2
- offset_y = max(0, rest_y - max_free_height)//2
- def pixel_callback(x, y, color):
- #global epd
- global epd_colormap
- global offset_x, offset_y
- # translate color to color index
- color_index = 0
- color_key = color[0] + color[1] << 8 + color[2] << 16
- if color_key in color_map:
- color_index = color_map[color_key]
- else:
- # search for the best color
- best_index = 0
- best_score = 1000
- for index in range(len(epd_colormap)):
- c1 = epd_colormap[index]
- c2 = color
- score = abs(c1[0] - c2[0]) + abs(c1[1] - c2[1]) + abs(c1[2] - c2[2])
- if score < best_score:
- best_score = score
- best_index = index
- if score < 10:
- break
- color_index = best_index
- color_map[color_key] = color_index
- epd.pixel(offset_x + x, offset_y + y, color_index)
-
- #print(str(time.localtime()), " BMP ", filename, " loading")
- time_start = time.ticks_ms()
- epd.fill(epd.White)
- microbmp.MicroBMP(header_callback=header_callback, data_callback=pixel_callback).load(filename)
- time_loaded = time.ticks_ms()
- print(" time to load: ", (time_loaded - time_start) / 1000, " s")
- #print(str(time.localtime()), " BMP loaded")
- #epd.EPD_5IN65F_Display(epd.buffer)
- #print(str(time.localtime()), " ePaper printed")
- return [free_x, free_y, free_width, free_height]
-
- def draw_pattern(epd):
- free_x = 0
- free_y = 400
- free_width = epd.width
- free_height = epd.height - free_y
- epd.fill_rect(0, 0, epd.width, free_y, random.randrange(2,7))
- return [free_x, free_y, free_width, free_height]
-
- def print_text(epd, text, region, center=False):
- fnt = 8
- x = region[0]
- y = region[1]
- w = region[2]
- h = region[3]
- if center:
- x = (w - len(text)*fnt) // 2
- epd.text(text, x, y, epd.Black)
-
- def draw_extra(epd, region, caption):
- fnt = 8
- region[0] += 5
- region[1] += 8
- if region[2] < fnt or region[3] < fnt:
- print("Not enough space for extra: ", str(region))
- return
- #epd.rect(region[0], region[1], region[2], region[3], epd.Black)
- #region[0] += random.randrange(50)
- #print_text(str(time.localtime()), region, center=True)
- if caption is not None:
- #region[1] += fnt * 2
- print_text(epd, caption, region)
- print("Caption: ", caption)
- else:
- print("No caption")
-
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