76 lines
3.1 KiB
Python
76 lines
3.1 KiB
Python
from dataclasses import dataclass
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import json
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import sys
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@dataclass
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class RectAndField:
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rect: list[float]
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rect_type: str
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field: dict
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def get_bounding_box_messages(fields_json_stream) -> list[str]:
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messages = []
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fields = json.load(fields_json_stream)
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messages.append(f"Read {len(fields['form_fields'])} fields")
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def rects_intersect(r1, r2):
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disjoint_horizontal = r1[0] >= r2[2] or r1[2] <= r2[0]
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disjoint_vertical = r1[1] >= r2[3] or r1[3] <= r2[1]
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return not (disjoint_horizontal or disjoint_vertical)
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rects_and_fields = []
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for f in fields["form_fields"]:
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rects_and_fields.append(RectAndField(f["label_bounding_box"], "label", f))
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rects_and_fields.append(RectAndField(f["entry_bounding_box"], "entry", f))
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rect_indices_by_page = {}
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position_in_page = {}
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for rect_index, rect_and_field in enumerate(rects_and_fields):
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page_indices = rect_indices_by_page.setdefault(
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rect_and_field.field["page_number"], []
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)
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position_in_page[rect_index] = len(page_indices)
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page_indices.append(rect_index)
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has_error = False
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for i, ri in enumerate(rects_and_fields):
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same_page_indices = rect_indices_by_page[ri.field["page_number"]]
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for j in same_page_indices[position_in_page[i] + 1 :]:
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rj = rects_and_fields[j]
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if rects_intersect(ri.rect, rj.rect):
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has_error = True
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if ri.field is rj.field:
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messages.append(f"FAILURE: intersection between label and entry bounding boxes for `{ri.field['description']}` ({ri.rect}, {rj.rect})")
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else:
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messages.append(f"FAILURE: intersection between {ri.rect_type} bounding box for `{ri.field['description']}` ({ri.rect}) and {rj.rect_type} bounding box for `{rj.field['description']}` ({rj.rect})")
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if len(messages) >= 20:
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messages.append("Aborting further checks; fix bounding boxes and try again")
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return messages
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if ri.rect_type == "entry":
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if "entry_text" in ri.field:
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font_size = ri.field["entry_text"].get("font_size", 14)
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entry_height = ri.rect[3] - ri.rect[1]
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if entry_height < font_size:
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has_error = True
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messages.append(f"FAILURE: entry bounding box height ({entry_height}) for `{ri.field['description']}` is too short for the text content (font size: {font_size}). Increase the box height or decrease the font size.")
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if len(messages) >= 20:
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messages.append("Aborting further checks; fix bounding boxes and try again")
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return messages
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if not has_error:
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messages.append("SUCCESS: All bounding boxes are valid")
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return messages
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if __name__ == "__main__":
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if len(sys.argv) != 2:
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print("Usage: check_bounding_boxes.py [fields.json]")
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sys.exit(1)
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with open(sys.argv[1]) as f:
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messages = get_bounding_box_messages(f)
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for msg in messages:
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print(msg)
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