Convert image to SVG format with wrapper

README.md

Installation

python3 -m pip install -r requirements.txt

Usage

python3 img2svg.py input.png

python3 img2svg.py input.png -c conf.txt

python3 img2svg.py input.png -c conf.txt -o output.svg --fill-color '#FF00FF' --fill-opacity 0.5

Config Format

separate with <Tab>

x   y   rx  ry  title   link

config.txt example:

0   0   140 720 Eudicots    https://www.baidu.com/s?wd=Eudicots
141 0   510 720 Monocots    https://www.baidu.com/s?wd=Monocots
511 0   720 720 Lycophytest https://www.baidu.com/s?wd=Lycophytest
721 0   890 720 Liverworts  https://www.baidu.com/s?wd=Liverworts
891 0   1359    720   Mosses   https://www.baidu.com/s?wd=Mosses

img2svg.py

import os
import base64

import click

import PIL.Image

from pysvg.structure import Svg, Image
from pysvg.shape import Rect
from pysvg.linking import A


CONF_FORMAT = 'x y rx ry title link'


def add_child(position, fill='#CCCCCC'):
    x, y, rx, ry = position
    w, h = rx - x, ry - y
    child = Rect(x=x, y=y, width=w, height=h, fill=fill, fill_opacity=0)
    return child


CONTEXT_SETTINGS = dict(help_option_names=['-?', '-h', '--help'])
@click.command(
    context_settings=CONTEXT_SETTINGS,
    no_args_is_help=True,
)
@click.argument('image')
@click.option('-c', '--conf', help=f'the config file, format: "{CONF_FORMAT}", separate with <Tab>')
@click.option('-o', '--outfile', help='the output file', default='out.svg', show_default=True)
@click.option('--fill-color', help='the fill color', default='#CCCCCC', show_default=True)
@click.option('--fill-opacity', help='the fill opacity', default=0.3, show_default=True, type=float)
def main(image, conf, outfile, fill_color, fill_opacity):
    """Convert image to SVG"""
    im = PIL.Image.open(image)

    svg = Svg(width='100%', height='100%')

    svg.setAttribute('viewBox', f'0 0 {im.width} {im.height}')
    svg.setAttribute('preserveAspectRatio', 'xMidYMid meet')

    im2 = Image(x=0, y=0, width=im.width, height=im.height)

    img_type = im.get_format_mimetype()
    img_str = f'data:{img_type};base64,' + \
        base64.b64encode(open(image, 'rb').read()).decode()
    im2.set_xlink_href(img_str)
    svg.addElement(im2)

    if conf and os.path.isfile(conf):
        with open(conf) as f:
            click.secho(f'read conf: {conf}')
            for line in f:
                linelist = line.strip().split('\t')
                print(linelist)
                a = A(target='new_window')
                a.set_xlink_title(linelist[4])
                a.set_xlink_href(linelist[5])
                child = add_child(map(int, linelist[:4]), fill=fill_color)

                child.setAttribute('onmouseover', f"evt.target.style['fill-opacity'] = {fill_opacity};")
                child.setAttribute('onmouseout', "evt.target.style['fill-opacity'] = 0;")
                # child.set_onmouseover("evt.target.style['fill-opacity'] = 0.3;")
                # child.set_onmouseout("evt.target.style['fill-opacity'] = 0;")

                a.addElement(child)
                svg.addElement(a)

    svg.save(outfile, encoding='UTF-8', standalone='no')
    click.secho(f'save file: {outfile}', fg='cyan')

if __name__ == '__main__':

    main()

output.svg

requirements.txt

click
pillow
pysvg-py3