也许是受到很久以前看到的这玩意儿的原因：The Shapes of CSS
现在开脑洞写了个自动转换，顺便支持了动画……嗯，纯 CSS (:з」∠)
主要步骤就是用 Python 读图片，然后把像素全转写成 CSS 的 box-shadow ，最后构建一个完整的 HTML 文件输出。
然后用浏览器打开生成的 HTML 文件，就直接看到图片了，如果输入是一个文件夹的话，就以文件夹里面的图片为帧生成一个带动画的 HTML。
最新的版本就在这儿了: img2html
#!/usr/bin/env python3
# -*- coding: utf-8 -*- ## @package img2html
# Usage : img2html.py file1|dir1 [file2|dir2 ...]
# Description : generate html uses box-shadow to show picture
# or a html to show your image sequence in a folder as css animation
# Dependencies : Python Image Library, Python 3
# Note : Take care of the Super-High-Energy output ( >﹏<。)
# Date : 2014-12-19
# Author : frantic1048 import sys
import os
from PIL import Image
from string import Template class UnknownColorMode(Exception): pass ## @var tHTML template for constructing entire html document
tHTML = Template('''
<!doctype html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>~ ${name} ~</title>
</head>
<body>
<style type="text/css">${css}</style>
<div id="image_kun"></div>
</body>
</html>''') ## @var tCSSStatic template for constructing static image's css code
tCSSStatic = Template('''
@charset "utf-8";
body{
display:flex;
justify-content:center;
align-items:center;
}
#image_kun{
height: ${height}px;
width: ${width}px;
position:relative;
}
#image_kun::after{
position:absolute;
height:1px;
width:1px;
background:${firstPixel};
margin:0;
padding:0;
content:"\\200B";/*ZWS*/
box-shadow:
${boxshadow};
}
''') ## @var tCSSAnimation template for constructing image sequence's css animation code
tCSSAnimation = Template('''
@charset "utf-8";
body{
display:flex;
justify-content:center;
align-items:center;
}
#image_kun{
height: ${height}px;
width: ${width}px;
position:relative;
}
#image_kun::after{
position:absolute;
height:1px;
width:1px;
background:transparent;
margin:0;
padding:0;
content:"\\200B";/*ZWS*/
animation:ayaya ${animationLength} step-end infinite alternate;
}
${animationKeyFrames}
''') ## @var tCSSKeyframes template entire CSS keyframes rule
tCSSKeyframes = Template('@keyframes ayaya {${keyframes}}') ## @var tCSSKeyframe template for a single CSS keyframe
tCSSKeyframe = Template('${percentage}% {${keyframeRule}}\n') ## @var tCSSKeyframeRule template for a single CSS keyframe inner rule
tCSSKeyframeRule = Template('background:${firstPixel};box-shadow:${boxshadow};') ## ensure no trailiing slash in directory name
def toRegularDirName(dirName):
if (os.path.split(dirName)[-1] == ''):
return os.path.split(dirName)[0]
else:
return dirName ## write str to a file,named as <exportFileName>.html
def toFile (str,exportFileName):
with open (exportFileName,'w') as html:
html.write(str) ## construct HEX Color value for a pixel
# @param pixel a RGB mode pixel object to be converted
# @return CSS hex format color value
def toHexColor (pixel):
return '#{0:02x}{1:02x}{2:02x}'.format(*pixel[:]) ## construct RGBA Color value for a pixel
# @param pixel a RGBA mode pixle object to be comverted
# @return CSS rgba format color value
def toRGBAColor (pixel):
return 'rgba({0},{1},{2},{3})'.format(*pixel[:]) def toCSSColor (pixel, mode):
if (mode == 'RGB'):
return toHexColor(pixel)
elif (mode == 'RGBA'):
return toRGBAColor(pixel)
else:
raise UnknownColorMode ## construct single box-shadow param
# @param color valid CSS color
def toBoxShadowParam (x, y, color):
return format('%spx %spx 0 %s'%(x, y, color)) ## process single image file to html
# @param fileName input file's name
# @param export output callback(doc, exportFileName):
# doc : generated html string
# exportFileName : output filename
def mipaStatic(fileName,export=''):
with Image.open(fileName) as im:
## what called magic
boxshadow = '' ## file name as sysname
exportFileName = fileName+'.html'
title = os.path.split(fileName)[-1] ## image size
width, height = im.size[0], im.size[1] #ensure RGB(A) mode
if (im.mode != 'RGBA' or im.mode != 'RGB'):
im.convert('RGB') firstPixel = toCSSColor(im.getpixel((0,0)), im.mode)
for y in range(0, height):
for x in range(0, width):
color = toCSSColor(im.getpixel((x, y)), im.mode)
#link magic
boxshadow += toBoxShadowParam(x, y, color) #add a spliter if not the end
if (not (y == height-1 and x == width-1)):
#keep a '\n' for text editor ˊ_>ˋ
boxshadow += ',' + '\n' doc = tHTML.substitute(name = title, css = tCSSStatic.substitute(width = width, height = height, boxshadow = boxshadow, firstPixel=firstPixel))
if (export==''):
print(doc)
else:
export(doc, exportFileName) ## process a image folder
# files in folder will processed to an animated html
# process order is filename asend
# @param dirName input file's name
# @param export output callback, call with generated html as a string argument
def mipaAnimation(dirName,export=''):
dirName = toRegularDirName(dirName)
title = os.path.basename(dirName)
exportFileName = title + '.html' files = os.listdir(dirName)
files.sort() FPS = 24
mode = ''
width, height = 0, 0
frameCount = 0
keyframeRules = []
keyframe = '' for f in files:
try:
with Image.open(os.path.join(dirName, f)) as im: if (export!=''):print('processing file --> ' + f) frameCount+=1 #ensure RGB(A) mode
if (im.mode != 'RGBA' or im.mode != 'RGB'):
im.convert('RGB'); #collect animation info
if (width == 0) : width, height = im.size[0], im.size[1]
if (mode == '') : mode = im.mode firstPixel = toCSSColor(im.getpixel((0,0)), mode)
boxshadow = ''
for y in range(0, height):
for x in range(0, width):
color = toCSSColor(im.getpixel((x, y)), mode)
#link magic
boxshadow += toBoxShadowParam(x, y, color) #add a spliter if not the end
if (not (y == height-1 and x == width-1)):
#keep a '\n' for text editor ˊ_>ˋ
boxshadow += ',' + '\n'
keyframeRules.append(tCSSKeyframeRule.substitute(firstPixel=firstPixel,boxshadow=boxshadow))
except:
pass percentUnit= 100/frameCount
for i in range(0,frameCount):
if (i == frameCount - 1):
pc = ''
elif (i == 0):
pc = ''
else:
pc = str(percentUnit * i)
keyframe += tCSSKeyframe.substitute(percentage = pc, keyframeRule = keyframeRules[i]) if (export!=''):print('generating document...')
doc = tHTML.substitute(name = title, css = tCSSAnimation.substitute(animationLength = str((1000 / FPS) * frameCount) + 'ms',
animationKeyFrames = tCSSKeyframes.substitute(keyframes = keyframe),
height = height,
width = width))
#output
if (export==''):
print(doc)
else:
print('Start exporting...')
export(doc, exportFileName)
print('Finished exporting !\nenjoy with your magical ' + exportFileName + ' _(:з」∠)_') for path in sys.argv[1:]:
if os.path.isfile(path):
##export to stdout
#mipaStatic(path) ##export to autonamed file
mipaStatic(path,toFile)
elif os.path.isdir(path):
#mipaAnimation(path)
mipaAnimation(path,toFile)