def add_text_to_image(image, left_text, center_text, rigth_text):

    '''

    圖片添加水印，思路是連原圖總共分為3層圖片，第二層與原圖尺寸相同，將水印圖片塊粘貼到第二層后，再將第一層、第二層復合為一個新的image

    :param image: Image.open()的文件內容

    :param left_text: 左下文字

    :param center_text: 中下文字

    :param rigth_text: 右下文字

    :return: 帶水印的image

    '''

    white_font = (255, 255, 255, 180)

    black_bg = (0, 0, 0, 30)

    font = ImageFont.truetype(os.path.join(BASE_DIR, 'static/font/STHeiti-Light.ttc'), size=44, index=0)

    # 將原圖轉換為rgba模式

    rgba_image = image.convert('RGBA')

    # 創建水印層

    text_overlay = Image.new('RGBA', (rgba_image.size[0], 50), black_bg)

    # 創建復合背景層

    layer = Image.new('RGBA', rgba_image.size, (255, 255, 255, 0))

    # 水印層添加文字

    image_draw = ImageDraw.Draw(text_overlay)

    # 设置文本文字位置

    text_size_x, text_size_y = image_draw.textsize(rigth_text, font=font)

    text_xy_left = (0, (text_overlay.size[1] - text_size_y) / 2)  # 底部左

    text_xy_center = ((text_overlay.size[0] - text_size_x) / 2, (text_overlay.size[1] - text_size_y) / 2)  # 底部中

    text_xy_right = (text_overlay.size[0] - text_size_x, (text_overlay.size[1] - text_size_y) / 2)  # 底部右

    # 设置文本颜色和透明度

    image_draw.text(text_xy_left, left_text, font=font, fill=white_font)

    image_draw.text(text_xy_center, center_text, font=font, fill=white_font)

    image_draw.text(text_xy_right, rigth_text, font=font, fill=white_font)

    # 粘貼水印層到復合背景層

    layer.paste(text_overlay, (0, layer.size[1] - text_overlay.size[1]))

    # 復合圖片

    image_with_text = Image.alpha_composite(rgba_image, layer)

    return image_with_text

​

​

@http.route('/mtr/upload/img', type='http', auth='none', csrf=False, cors='*')

    def upload_img(self, **kwargs):

        '''

        圖片上傳

        :param kwargs: file或者base64為key，有file時傳的文件類型，base64時傳的文件的base64數據

        :return:

        '''

        if kwargs.get('file', None) is not None:

            file = kwargs['file']

            filename = file.filename

            now_time = dt.datetime.strftime(dt.datetime.now(), '%Y-%m-%d')

            name = request.env.user.name or ''

            # 添加水印

            image = add_text_to_image(Image.open(file), now_time, name)

            file_content = base64.b64encode(image.tobytes())

        else:

            file = json.loads(kwargs['base64'])

            file_content = file['data']

            filename = file['name']

        file_record = request.env['maintenance_plan.binary.file'].sudo().create({

            'file': file_content,

            'filename': filename

        })

        url = '/web/content?model={}&id={}&field={}&filename_field={}'.format(

            'maintenance_plan.binary.file', file_record.id, 'file', 'filename'

        )

        return to_json({'errcode': 0, 'msg': '', 'data': {'url': url}})