xlswriter中textbox半透明填充

修改文件：
Python.3.9\LocalCache\local-packages\Python39\site-packages\xlsxwriter\drawing.py

参照：
"Python.3.9\LocalCache\local-packages\Python39\site-packages\xlsxwriter\chart.py"(3260,33): self._write_a_alpha(transparency)

文本框属性

    tx_props = {
        'width': width,
        'height': height,
        'fill': {'color': '#f6f6f6', 'transparency': 20},
        'border': {'color': '#000000', 'width': 1},
        'align': {'vertical': 'middle', 'horizontal': 'left'},
        'font': {'bold': False, 'name': u'微软雅黑', 'size': 12},
    }

函数_write_xdr_sp_pr片段

...
        if shape.fill:
            if not shape.fill['defined']:
                # Write the a:solidFill element.
                self._write_a_solid_fill_scheme('lt1')
            elif 'none' in shape.fill:
                # Write the a:noFill element.
                self._xml_empty_tag('a:noFill')
            elif 'color' in shape.fill:
                # Write the a:solidFill element.
                transparency = shape.fill.get('transparency', None)
                self._write_a_solid_fill(get_rgb_color(shape.fill['color']), transparency)
...

    def _write_a_solid_fill(self, rgb, transparency=None):
        # Write the <a:solidFill> element.
        if rgb is None:
            rgb = 'FFFFFF'

        self._xml_start_tag('a:solidFill')

        # Write the a:srgbClr element.
        self._write_a_srgb_clr(rgb, transparency)

        self._xml_end_tag('a:solidFill')

    def _write_a_srgb_clr(self, val, transparency=None):
        # Write the <a:srgbClr> element.

        attributes = [('val', val)]
        if transparency:
            self._xml_start_tag('a:srgbClr', attributes)

            # Write the a:alpha element.
            self._write_a_alpha(transparency)

            self._xml_end_tag('a:srgbClr')
        else:
            self._xml_empty_tag('a:srgbClr', attributes)

    def _write_a_alpha(self, val):
        # Write the <a:alpha> element.

        val = int((100 - int(val)) * 1000)

        attributes = [('val', val)]

        self._xml_empty_tag('a:alpha', attributes)