85 lines
3.7 KiB
Python
85 lines
3.7 KiB
Python
# -*- coding: utf-8 -*-
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import re
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from typing import List, Optional, Union
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from wireviz.DataClasses import Color
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from wireviz.wv_colors import translate_color
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from wireviz.wv_helper import remove_links
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def nested_html_table(rows: List[Union[str, List[Optional[str]], None]], table_attrs: str = '') -> str:
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# input: list, each item may be scalar or list
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# output: a parent table with one child table per parent item that is list, and one cell per parent item that is scalar
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# purpose: create the appearance of one table, where cell widths are independent between rows
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# attributes in any leading <tdX> inside a list are injected into to the preceeding <td> tag
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html = []
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html.append(f'<table border="0" cellspacing="0" cellpadding="0"{table_attrs or ""}>')
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num_rows = 0
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for row in rows:
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if isinstance(row, List):
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if len(row) > 0 and any(row):
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html.append(' <tr><td>')
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html.append(' <table border="0" cellspacing="0" cellpadding="3" cellborder="1"><tr>')
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for cell in row:
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if cell is not None:
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# Inject attributes to the preceeding <td> tag where needed
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html.append(f' <td balign="left">{cell}</td>'.replace('><tdX', ''))
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html.append(' </tr></table>')
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html.append(' </td></tr>')
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num_rows = num_rows + 1
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elif row is not None:
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html.append(' <tr><td>')
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html.append(f' {row}')
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html.append(' </td></tr>')
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num_rows = num_rows + 1
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if num_rows == 0: # empty table
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html.append('<tr><td></td></tr>') # generate empty cell to avoid GraphViz errors
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html.append('</table>')
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return html
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def html_bgcolor_attr(color: Color) -> str:
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"""Return attributes for bgcolor or '' if no color."""
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return f' bgcolor="{translate_color(color, "HEX")}"' if color else ''
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def html_bgcolor(color: Color, _extra_attr: str = '') -> str:
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"""Return <td> attributes prefix for bgcolor or '' if no color."""
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return f'<tdX{html_bgcolor_attr(color)}{_extra_attr}>' if color else ''
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def html_colorbar(color: Color) -> str:
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"""Return <tdX> attributes prefix for bgcolor and minimum width or None if no color."""
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return html_bgcolor(color, ' width="4"') if color else None
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def html_image(image):
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from wireviz.DataClasses import Image
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if not image:
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return None
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# The leading attributes belong to the preceeding tag. See where used below.
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html = f'{html_size_attr(image)}><img scale="{image.scale}" src="{image.src}"/>'
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if image.fixedsize:
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# Close the preceeding tag and enclose the image cell in a table without
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# borders to avoid narrow borders when the fixed width < the node width.
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html = f'''>
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<table border="0" cellspacing="0" cellborder="0"><tr>
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<td{html}</td>
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</tr></table>
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'''
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return f'''<tdX{' sides="TLR"' if image.caption else ''}{html_bgcolor_attr(image.bgcolor)}{html}'''
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def html_caption(image):
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from wireviz.DataClasses import Image
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return (f'<tdX sides="BLR"{html_bgcolor_attr(image.bgcolor)}>{html_line_breaks(image.caption)}'
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if image and image.caption else None)
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def html_size_attr(image):
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from wireviz.DataClasses import Image
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# Return Graphviz HTML attributes to specify minimum or fixed size of a TABLE or TD object
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return ((f' width="{image.width}"' if image.width else '')
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+ (f' height="{image.height}"' if image.height else '')
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+ ( ' fixedsize="true"' if image.fixedsize else '')) if image else ''
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def html_line_breaks(inp):
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return remove_links(inp).replace('\n', '<br />') if isinstance(inp, str) else inp
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