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converter.py
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#!/usr/bin/env python
# encoding=utf-8
from __future__ import print_function, unicode_literals
import os
import sys
import time
import json
from collections import namedtuple
from itertools import cycle
import jinja2
from PIL import Image
import numpy as np
Point = namedtuple('Point', ['x', 'y'])
Pixel = namedtuple('Pixel', ['r', 'g', 'b'])
RenderItem = namedtuple('RenderItem', ['color', 'char'])
RenderGroup = list
HTMLImage = list
TEMPLATE = '''
<html>
<head>
<meta charset="utf-8">
<title>{{ title }}</title>
<style type="text/css">
body {
margin: 0px; padding: 0px; line-height:100%; letter-spacing:0px; text-align: center;
min-width: {{width}}px;
width: auto !important;
font-size: {{size}}px;
background-color: #{{background}};
font-family: {{font_family}};
}
</style>
</head>
<body>
<div>
{% for group in html_image %}
{% for item in group %}<font color="{{ item.color }}">{{ item.char }}</font>{% endfor %}
<br>
{% endfor %}
</div>
<script>
var colors = {{colors}}
let i =-1;
var fonts = document.getElementsByTagName('font')
console.log('fonts.length:'+fonts.length);
var int = setInterval(function(){
if(i==colors.length-1){
i=-1;
console.log('播放完成');
}
i++;
let color = colors[i];
//console.log('color.type'+typeof(color));
//console.log('color.length'+color.length)
for(var j=0;j<color.length;j++){
fonts[j].color = color[j];
}
},300)
</script>
</body>
</html>'''
_c = cycle(r'/-\|')
def _progress_callback(percent):
pass
# if percent == 100:
# # os.system("cls")
# print("100%完成！")
# else:
# lca = getattr(_progress_callback, '_last_call_at', 0)
# if time.time() - lca > 0.5:
# _progress_callback._last_call_at = time.time()
# #sys.stdout.write('\r{} progress: {:.2f}%'.format(_c.next(), percent))
#
# Img2HTMLConverter.showprogress(percent)
class Img2HTMLConverter(object):
def __init__(self,
font_size=10,
char='䦗',
background='#000000',
title='by xx',
font_family='monospace',
progress_callback=None):
self.font_size = font_size
self.background = background
self.title = title
self.font_family = font_family
if isinstance(char, str):
# char = char.encode('utf-8')
pass
self.char = cycle(char)
self._prg_cb = progress_callback or _progress_callback
def convert(self, source, colors):
image = Image.open(source)
width, height = image.size
# 按比例缩高
if width > 1200 and height < width:
height = int(1200 / width * height)
width = 1200
# 按比例缩宽
elif height > 800:
width = int(800 / height * width)
height = 800
size = width, height
image.thumbnail(size, Image.ANTIALIAS)
# print(width,height)
width, height = image.size
row_blocks = int(round(float(width) / self.font_size))
col_blocks = int(round(float(height) / self.font_size))
html_image = HTMLImage()
progress = 0.0
step = 1. / (col_blocks * row_blocks)
print(col_blocks, row_blocks)
for col in range(col_blocks):
render_group = RenderGroup()
for row in range(row_blocks):
pixels = []
for y in range(self.font_size):
for x in range(self.font_size):
point = Point(row * self.font_size + x, col * self.font_size + y)
if point.x >= width or point.y >= height:
continue
pixels.append(Pixel(*image.getpixel(point)[:3]))
average = self.get_average(pixels=pixels)
color = self.rgb2hex(average)
render_item = RenderItem(color='#' + color, char=next(self.char))
render_group.append(render_item)
progress += step
self._prg_cb(int(progress * 100))
html_image.append(render_group)
self._prg_cb(100)
return self.render(html_image, colors)
def convertNDArrayColors(self, ndarray1):
colors = []
height, width, pixels = ndarray1.shape
row_blocks = int(round(float(width) / self.font_size))
col_blocks = int(round(float(height) / self.font_size))
progress = 0.0
for col in range(col_blocks):
for row in range(row_blocks):
pixels = ndarray1[col * self.font_size:(col+1) * self.font_size, row * self.font_size:(row+1) * self.font_size]#.copy()
r, g, b = 0, 0, 0
for rowPixel in pixels:
for pixel in rowPixel:
r += int(pixel[2])
g += int(pixel[1])
b += int(pixel[0])
base = float(self.font_size * self.font_size)
pixel = Pixel(
r=int(round(r / base)),
g=int(round(g / base)),
b=int(round(b / base)),
)
color = self.rgb2hex(pixel)
colors.append('#' + color) # 将color存入数组里
self._prg_cb(int(progress * 100))
self._prg_cb(100)
return json.dumps(colors)
def convert(self, width, height, colors):
row_blocks = int(round(float(width) / self.font_size))
col_blocks = int(round(float(height) / self.font_size))
html_image = HTMLImage()
for col in range(col_blocks):
render_group = RenderGroup()
for row in range(row_blocks):
render_item = RenderItem(color=colors[0][col*row_blocks+row], char=next(self.char))
render_group.append(render_item)
html_image.append(render_group)
self._prg_cb(100)
return self.render(html_image, colors)
def showprogress(self, progress):
# os.system("cls")
# 打印一个#号，这种方法打印不会自动换行
# sys.stdout.write("转换中："+str(progress)+'%')
print('\r转换中：{:.2%}'.format(progress), end='')
# 实时刷新一下，否则上面这一条语句，会等#号全部写入到缓存中后才一次性打印出来
sys.stdout.flush()
# 每个#号等待0.1秒的时间打印
# time.sleep(0.1)
def render(self, html_image, colors):
template = jinja2.Template(TEMPLATE)
return template.render(
html_image=html_image,
colors=colors,
size=self.font_size,
background=self.background,
title=self.title,
font_family=self.font_family,
width=self.font_size * len(html_image[0])
)
@staticmethod
def rgb2hex(pixel):
return '{:02x}{:02x}{:02x}'.format(*pixel)
@staticmethod
def get_average(pixels):
r, g, b = 0, 0, 0
for pixel in pixels:
r += pixel.r
g += pixel.g
b += pixel.b
base = float(len(pixels))
return Pixel(
r=int(round(r / base)),
g=int(round(g / base)),
b=int(round(b / base)),
)