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import unittest
from pdfminer.layout import (
LTLayoutContainer,
LAParams,
LTTextLineHorizontal,
LTTextLineVertical,
)
from pdfminer.utils import Plane
class TestGroupTextLines(unittest.TestCase):
def test_parent_with_wrong_bbox_returns_non_empty_neighbour_list(self):
"""
LTLayoutContainer.group_textlines() should return all the lines in a
separate LTTextBoxes if they do not overlap. Even when the bounding box
of the parent container does not contain all the lines.
"""
laparams = LAParams()
layout = LTLayoutContainer((0, 0, 50, 50))
line1 = LTTextLineHorizontal(laparams.word_margin)
line1.set_bbox((0, 0, 50, 5))
line2 = LTTextLineHorizontal(laparams.word_margin)
line2.set_bbox((0, 50, 50, 55))
lines = [line1, line2]
textboxes = list(layout.group_textlines(laparams, lines))
self.assertEqual(len(textboxes), 2)
class TestFindNeigbors(unittest.TestCase):
def test_find_neighbors_horizontal(self):
laparams = LAParams()
plane = Plane((0, 0, 50, 50))
line = LTTextLineHorizontal(laparams.word_margin)
line.set_bbox((10, 4, 20, 6))
plane.add(line)
left_aligned_above = LTTextLineHorizontal(laparams.word_margin)
left_aligned_above.set_bbox((10, 6, 15, 8))
plane.add(left_aligned_above)
right_aligned_below = LTTextLineHorizontal(laparams.word_margin)
right_aligned_below.set_bbox((15, 2, 20, 4))
plane.add(right_aligned_below)
centrally_aligned_overlapping = LTTextLineHorizontal(
laparams.word_margin)
centrally_aligned_overlapping.set_bbox((13, 5, 17, 7))
plane.add(centrally_aligned_overlapping)
not_aligned = LTTextLineHorizontal(laparams.word_margin)
not_aligned.set_bbox((0, 6, 5, 8))
plane.add(not_aligned)
wrong_height = LTTextLineHorizontal(laparams.word_margin)
wrong_height.set_bbox((10, 6, 15, 10))
plane.add(wrong_height)
neighbors = line.find_neighbors(plane, laparams.line_margin)
self.assertCountEqual(
neighbors,
[
line,
left_aligned_above,
right_aligned_below,
centrally_aligned_overlapping,
],
)
def test_find_neighbors_vertical(self):
laparams = LAParams()
plane = Plane((0, 0, 50, 50))
line = LTTextLineVertical(laparams.word_margin)
line.set_bbox((4, 10, 6, 20))
plane.add(line)
bottom_aligned_right = LTTextLineVertical(laparams.word_margin)
bottom_aligned_right.set_bbox((6, 10, 8, 15))
plane.add(bottom_aligned_right)
top_aligned_left = LTTextLineVertical(laparams.word_margin)
top_aligned_left.set_bbox((2, 15, 4, 20))
plane.add(top_aligned_left)
centrally_aligned_overlapping = LTTextLineVertical(
laparams.word_margin)
centrally_aligned_overlapping.set_bbox((5, 13, 7, 17))
plane.add(centrally_aligned_overlapping)
not_aligned = LTTextLineVertical(laparams.word_margin)
not_aligned.set_bbox((6, 0, 8, 5))
plane.add(not_aligned)
wrong_width = LTTextLineVertical(laparams.word_margin)
wrong_width.set_bbox((6, 10, 10, 15))
plane.add(wrong_width)
neighbors = line.find_neighbors(plane, laparams.line_margin)
self.assertCountEqual(
neighbors,
[
line,
bottom_aligned_right,
top_aligned_left,
centrally_aligned_overlapping,
],
)
|
