80 lines
2.8 KiB
Python
80 lines
2.8 KiB
Python
import logging
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logger = logging.getLogger(__name__)
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# Define SVG code generation function with member_id parameter
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def generate_chart(members, member_id=None):
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if not member_id:
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member_id = members[0]["id"]
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# Define some constants for layout
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node_radius = 30
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node_spacing = 80
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node_y = 100
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parent_y_offset = 50
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child_y_offset = 150
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# Find the specified member and its descendants
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member = None
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descendants = set()
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for m in members:
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if m["id"] == member_id:
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member = m
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descendants.add(member_id)
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break
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# calculate only if links are founded
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if member:
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stack = member["children"].copy()
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while stack:
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child_id = stack.pop()
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descendants.add(child_id)
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for m in members:
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if m["id"] == child_id:
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stack.extend(m["children"])
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break
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# Define the x position for each member
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x_positions = {}
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x_positions[member_id] = 0
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for i, m in enumerate(members):
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if m["id"] in descendants:
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x_positions[m["id"]] = (i * node_spacing) + node_radius
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# Start building the SVG code
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svg_width = (len(descendants) * node_spacing) + (2 * node_radius)
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svg_height = 200
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svg_code = f'<svg width="{svg_width}" height="{svg_height}">'
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# Generate nodes and names for each descendant
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for m in members:
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if m["id"] in descendants:
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node_x = x_positions[m["id"]]
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node_code = f'<circle cx="{node_x}" cy="{node_y}" r="{node_radius}" stroke="black" stroke-width="2" fill="white"/>'
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name_code = f'<text x="{node_x}" y="{node_y}" font-size="16" text-anchor="middle">{m["name"]}</text>'
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svg_code += node_code + name_code
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# Generate links to parent nodes
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for parent_id in m["parents"]:
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if parent_id in descendants:
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parent_x = x_positions[parent_id]
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link_code = f'<line x1="{node_x}" y1="{node_y - parent_y_offset}" x2="{parent_x}" y2="{node_y}" stroke="black" stroke-width="2"/>'
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svg_code += link_code
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# Generate links to child nodes
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for child_id in m["children"]:
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if child_id in descendants:
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child_x = x_positions[child_id]
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link_code = f'<line x1="{node_x}" y1="{node_y + child_y_offset}" x2="{child_x}" y2="{node_y}" stroke="black" stroke-width="2"/>'
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svg_code += link_code
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# Finish the SVG code
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svg_code += "</svg>"
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return svg_code.encode("utf-8")
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else:
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logger.error(f"no connections in graph for {member_id}")
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logger.debug(members)
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return ""
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