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@@ -29,13 +29,20 @@ r"""输出内容到用户浏览器
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.. autofunction:: put_table
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.. autofunction:: table_cell_buttons
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.. autofunction:: put_buttons
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+.. autofunction:: put_image
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.. autofunction:: put_file
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"""
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+import io
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from base64 import b64encode
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from collections.abc import Mapping
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from .io_ctrl import output_register_callback, send_msg
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+try:
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+ from PIL.Image import Image as PILImage
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+except ImportError:
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+ PILImage = type('MockPILImage', (), {})
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+
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def set_title(title):
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r"""设置页面标题"""
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@@ -350,6 +357,27 @@ def put_buttons(buttons, onclick, small=False, anchor=None, before=None, after=N
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after=after)
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+def put_image(content, format=None, title='', anchor=None, before=None, after=None):
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+ """输出图片。
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+
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+ :param content: 文件内容. 类型为 bytes-like object 或者为 ``PIL.Image.Image`` 实例
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+ :param str title: 图片描述
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+ :param str format: 图片格式。如 ``png`` , ``jpeg`` , ``gif`` 等
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+ :param str anchor, before, after: 与 `put_text` 函数的同名参数含义一致
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+ """
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+ if isinstance(content, PILImage):
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+ format = content.format
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+ imgByteArr = io.BytesIO()
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+ content.save(imgByteArr, format=format)
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+ content = imgByteArr.getvalue()
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+
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+ format = '' if format is None else ('image/%s' % format)
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+
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+ b64content = b64encode(content).decode('ascii')
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+ put_html(f'<img src="data:{format};base64, {b64content}" alt="{title}" />',
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+ anchor=anchor, before=before, after=after)
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+
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+
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def put_file(name, content, anchor=None, before=None, after=None):
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"""输出文件。
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在浏览器上的显示为一个以文件名为名的链接，点击链接后浏览器自动下载文件。
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wangweimin