nmcSpider/nmc/compress_image.py

import io

from PIL import Image
from selenium.webdriver.common.action_chains import ActionChains
from selenium.webdriver.common.keys import Keys

def compress_image(image_path, output_path, quality=90, resize=None):
    """压缩图片并保存到指定路径。

    :param image_path: 原始图片路径
    :param output_path: 压缩后图片路径
    :param quality: 压缩质量，范围1-100，默认90，值越小图片越小但质量越差
    """
    img = Image.open(image_path)
    if resize:
        img.thumbnail(resize)
    img = Image.open(image_path)
    img.save(output_path, optimize=True, quality=quality)

def scroll_to_element(driver, element):
    """滚动到指定元素位置。"""
    driver.execute_script("arguments[0].scrollIntoView();", element)
def capture_element_screenshot(driver, element, filename):
    """Captures screenshot of the given element and saves it."""
    location = element.location
    size = element.size
    screenshot = driver.get_screenshot_as_png()  # 获取整个页面的截图
    image = Image.open(io.BytesIO(screenshot))
    # 计算截图中元素对应的位置并裁剪
    left = location['x']
    top = location['y']
    right = location['x'] + size['width']
    bottom = location['y'] + size['height']
    cropped_image = image.crop((left, top, right, bottom)) # 注意这里的顺序是(left, top, right, bottom)，可能需要调整为(left, top, right, bottom)取决于坐标系
    cropped_image.save(filename)