1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
|
# SPDX-FileCopyrightText: 2022 James R. Barlow
# SPDX-License-Identifier: MPL-2.0
from __future__ import annotations
from unittest.mock import Mock
import pytest
from PIL import Image
from reportlab.lib.units import inch
from reportlab.lib.utils import ImageReader
from reportlab.pdfgen.canvas import Canvas
from ocrmypdf import _pipeline, pdfinfo
from ocrmypdf.helpers import Resolution
@pytest.fixture(scope='session')
def rgb_image():
im = Image.new('RGB', (8, 8))
im.putpixel((4, 4), (255, 0, 0))
im.putpixel((5, 5), (0, 255, 0))
im.putpixel((6, 6), (0, 0, 255))
return ImageReader(im)
DUMMY_OVERSAMPLE_RESOLUTION = Resolution(42.0, 42.0)
VECTOR_RESOLUTION = Resolution(_pipeline.VECTOR_PAGE_DPI, _pipeline.VECTOR_PAGE_DPI)
@pytest.mark.parametrize(
'image, text, vector, result',
[
(False, False, False, VECTOR_RESOLUTION),
(False, True, False, VECTOR_RESOLUTION),
(True, False, False, DUMMY_OVERSAMPLE_RESOLUTION),
(True, True, False, VECTOR_RESOLUTION),
(False, False, True, VECTOR_RESOLUTION),
(False, True, True, VECTOR_RESOLUTION),
(True, False, True, VECTOR_RESOLUTION),
(True, True, True, VECTOR_RESOLUTION),
],
)
def test_dpi_needed(image, text, vector, result, rgb_image, outdir):
c = Canvas(str(outdir / 'dpi.pdf'), pagesize=(5 * inch, 5 * inch))
if image:
c.drawImage(rgb_image, 1 * inch, 1 * inch, width=1 * inch, height=1 * inch)
if text:
c.drawString(1 * inch, 4 * inch, "Actual text")
if vector:
c.ellipse(3 * inch, 3 * inch, 4 * inch, 4 * inch)
c.showPage()
c.save()
mock = Mock()
mock.oversample = DUMMY_OVERSAMPLE_RESOLUTION[0]
pi = pdfinfo.PdfInfo(outdir / 'dpi.pdf')
assert _pipeline.get_canvas_square_dpi(pi[0], mock) == result
assert _pipeline.get_page_square_dpi(pi[0], mock) == result
@pytest.mark.parametrize(
# Name for nicer -v output
'name,input,output',
(
(
'empty_input',
# Input:
(),
# Output:
(),
),
(
'no_values',
# Input:
('', '', '', '', ''),
# Output:
(((1, 5), None),),
),
(
'no_empty_values',
# Input:
('v', 'w', 'x', 'y', 'z'),
# Output:
(
((1, 1), 'v'),
((2, 2), 'w'),
((3, 3), 'x'),
((4, 4), 'y'),
((5, 5), 'z'),
),
),
(
'skip_head',
# Input:
('', '', 'x', 'y', 'z'),
# Output:
(
((1, 2), None),
((3, 3), 'x'),
((4, 4), 'y'),
((5, 5), 'z'),
),
),
(
'skip_tail',
# Input:
('x', 'y', 'z', '', ''),
# Output:
(
((1, 1), 'x'),
((2, 2), 'y'),
((3, 3), 'z'),
((4, 5), None),
),
),
(
'range_in_middle',
# Input:
('x', '', '', '', 'y'),
# Output:
(
((1, 1), 'x'),
((2, 4), None),
((5, 5), 'y'),
),
),
(
'range_in_middle_2',
# Input:
('x', '', '', 'y', '', '', '', 'z'),
# Output:
(
((1, 1), 'x'),
((2, 3), None),
((4, 4), 'y'),
((5, 7), None),
((8, 8), 'z'),
),
),
),
)
def test_enumerate_compress_ranges(name, input, output):
assert output == tuple(_pipeline.enumerate_compress_ranges(input))
|
