• 图片中插入数据


        def generate_certificate_completion(self, data):
            """图片中插入数据"""
            from PIL import ImageFont, Image, ImageDraw
            from app_config import FONT_DATA_PATH
            from app.util.ImageCrop import Graphics
    
            # 设置字体,如果没有,也可以不设置
            font = ImageFont.truetype(FONT_DATA_PATH, 20)  # Baidu and download file 罗西钢笔行楷.ttf
    
            # 打开底版图片
            show_url = Graphics.format_nginx_data_url(data["template_url"])
    
            imageFile = show_url
            im1 = Image.open(imageFile)
    
            start_at = self._time_array(data["start_at"])
            end_at = self._time_array(data["end_at"])
            issuing_at = datetime.now()
    
            # 在图片上添加文字
            draw = ImageDraw.Draw(im1)
            draw.text((110, 220), data["name"], (0, 0, 0), font)
            draw.text((325, 220), data["course_title"], (0, 0, 0), font)
            draw.text((520, 300), "优秀", (0, 0, 0), font)
            draw.text((110, 370), "证书编号: 00000000000001", (0, 0, 0), font)
            draw.text((158, 272), start_at["year"], (0, 0, 0), font)
            draw.text((215, 272), start_at["month"], (0, 0, 0), font)
            draw.text((250, 272), start_at["day"], (0, 0, 0), font)
            draw.text((300, 272), end_at["year"], (0, 0, 0), font)
            draw.text((355, 272), end_at["month"], (0, 0, 0), font)
            draw.text((388, 272), end_at["day"], (0, 0, 0), font)
            draw.text((130, 300), "01", (0, 0, 0), font)
            draw.text((520, 415), str(issuing_at.year), (0, 0, 0), font)
            draw.text((575, 415), str(issuing_at.month), (0, 0, 0), font)
            draw.text((602, 415), str(issuing_at.day), (0, 0, 0), font)
    
            # 保存
            content_type = show_url.rsplit('.', 1)[1]
            show_url = Graphics.upload_image(im1, "certificate", content_type)
    
            # 修改证书
            query = dict()
            query["certificate_url"] = show_url
            query["paper_status"] = "audit_success"
            self.certificate_update(data["id"], query)
            return {"errcode": 200, "errmsg": "ok", "data": show_url}

    图片中插入头像的处理:

    def book_page_avatar_processing(name, floor_map_url, avatar_url):
        from PIL import ImageFont, Image, ImageDraw
        from app_config import FONT_DATA_PATH
        from app.util.ImageCrop import Graphics
    
        # 设置字体,如果没有,也可以不设置
        font = ImageFont.truetype(FONT_DATA_PATH, 70)  # Baidu and download file 罗西钢笔行楷.ttf
    
        # 打开底版图片
        floor_map_file = Graphics.format_nginx_data_url(floor_map_url)
        im1 = Image.open(floor_map_file)
    
        # 在图片上添加文字
        draw = ImageDraw.Draw(im1)
        if len(name) > 8:
            draw.text((650, 410), name[8:], (0, 0, 0, 255), font)
        draw.text((650, 330), name, (0, 0, 0), font)
    
        # 打开头像图片
        avatar_file = Graphics.format_nginx_data_url(avatar_url)
        markImg = Image.open(avatar_file)
        markImg.thumbnail((330, 325))   # 压缩图片
        size = markImg.size
    
        # 因为是要圆形,所以需要正方形的图片
        r2 = min(size[0], size[1])
        if size[0] != size[1]:
            markImg = markImg.resize((r2, r2), Image.ANTIALIAS)
    
        # 最后生成圆的半径
        r3 = r2 / 2
        imb = Image.new('RGBA', (int(r3) * 2, int(r3) * 2), (255, 255, 255, 255))
    
        pima = markImg.load()  # 像素的访问对象
        pimb = imb.load()
        pim_back = im1.load()
        r = float(r2 / 2)  # 圆心横坐标
        for i in range(r2):
            for j in range(r2):
                lx = abs(i - r)  # 到圆心距离的横坐标
                ly = abs(j - r)  # 到圆心距离的纵坐标
                l = (pow(lx, 2) + pow(ly, 2)) ** 0.5  # 三角函数 半径
    
                if l < r3 - 4:
                    pimb[i - (r - r3), j - (r - r3)] = pima[i, j]
                elif l > r3:
                    # 大于半径的像素为背景图位置对应的像素,这样显示圆形头像四个角才能正常显示,pim_back为背景image对象
                    pimb[i - (r - r3), j - (r - r3)] = pim_back[i + 141, j + 250]    # 头像外围四角按背景图片的图像处理
        im1.paste(imb, (142, 248))  # 头像的放置位置
    
        # 保存
        content_type = floor_map_file.rsplit('.', 1)[1]
        show_url = Graphics.upload_image(im1, "certificate", content_type)
    
        return {"errcode": 200, "errmsg": "ok", "data": show_url}
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  • 原文地址:https://www.cnblogs.com/rixian/p/12855731.html
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