from wand.image import Image as wima
from wand.color import Color
import os
from concurrent.futures import ThreadPoolExecutor, ProcessPoolExecutor, as_completed, wait


def wmf2png(old_src):
    """
    1.将公式wmf格式转化为png图片
    :param old_src:
    :return:
    """
    with wima(filename=old_src, resolution=300, background=Color('rgba( 0, 0, 0, 0.0)'), format='png') as img:
        # newfilename = os.path.join(base_dir, fname[:-3]+"png")
        # img.convert()
        img.save(filename=os.path.splitext(old_src)[0] + ".png")


def svg2png(old_src):
    """svg转png"""
    with wima(filename=old_src, resolution=200, background=Color('rgba( 0, 0, 0, 0.0)'), format='png') as img:
        newfilename = os.path.splitext(old_src)[0] + ".png"
        img.save(filename=newfilename)
        return img.size, newfilename