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"""
Extract drawings of a PDF page and compare with stored expected result.
"""
import io
import os
import sys
import pprint
import fitz
scriptdir = os.path.abspath(os.path.dirname(__file__))
filename = os.path.join(scriptdir, "resources", "symbol-list.pdf")
symbols = os.path.join(scriptdir, "resources", "symbols.txt")
def test_drawings1():
symbols_text = open(symbols).read() # expected result
doc = fitz.open(filename)
page = doc[0]
paths = page.get_cdrawings()
out = io.StringIO() # pprint output goes here
pprint.pprint(paths, stream=out)
assert symbols_text == out.getvalue()
def test_drawings2():
delta = (0, 20, 0, 20)
doc = fitz.open()
page = doc.new_page()
r = fitz.Rect(100, 100, 200, 200)
page.draw_circle(r.br, 2, color=0)
r += delta
page.draw_line(r.tl, r.br, color=0)
r += delta
page.draw_oval(r, color=0)
r += delta
page.draw_rect(r, color=0)
r += delta
page.draw_quad(r.quad, color=0)
r += delta
page.draw_polyline((r.tl, r.tr, r.br), color=0)
r += delta
page.draw_bezier(r.tl, r.tr, r.br, r.bl, color=0)
r += delta
page.draw_curve(r.tl, r.tr, r.br, color=0)
r += delta
page.draw_squiggle(r.tl, r.br, color=0)
r += delta
rects = [p["rect"] for p in page.get_cdrawings()]
bboxes = [b[1] for b in page.get_bboxlog()]
for i, r in enumerate(rects):
assert fitz.Rect(r) in fitz.Rect(bboxes[i])
def _dict_difference(a, b):
'''
Returns `(keys_a, keys_b, key_values)`, information about differences
between dicts `a` and `b`.
`keys_a` is the set of keys that are in `a` but not in `b`.
`keys_b` is the set of keys that are in `b` but not in `a`.
`key_values` is a dict with keys that are in both `a` and `b` but where the
values differ; the values in this dict are `(value_a, value_b)`.
'''
keys_a = set()
keys_b = set()
key_values = dict()
for key in a:
if key not in b:
keys_a.add( key)
for key in b:
if key not in a:
keys_b.add( key)
for key, va in a.items():
if key in b:
vb = b[key]
if va != vb:
key_values[key] = (va, vb)
return keys_a, keys_b, key_values
def test_drawings3():
doc = fitz.open()
page1 = doc.new_page()
shape1 = page1.new_shape()
shape1.draw_line((10, 10), (10, 50))
shape1.draw_line((10, 50), (100, 100))
shape1.finish(closePath=False, color=(0,0,0), width=5)
shape1.commit()
drawings1 = list(page1.get_drawings())
page2 = doc.new_page()
shape2 = page2.new_shape()
shape2.draw_line((10, 10), (10, 50))
shape2.draw_line((10, 50), (100, 100))
shape2.finish(closePath=True, color=(0,0,0), width=5)
shape2.commit()
drawings2 = list(page2.get_drawings())
page3 = doc.new_page()
shape3 = page3.new_shape()
shape3.draw_line((10, 10), (10, 50))
shape3.draw_line((10, 50), (100, 100))
shape3.draw_line((100, 100), (50, 70))
shape3.finish(closePath=False, color=(0,0,0), width=5)
shape3.commit()
drawings3 = list(page3.get_drawings())
page4 = doc.new_page()
shape4 = page4.new_shape()
shape4.draw_line((10, 10), (10, 50))
shape4.draw_line((10, 50), (100, 100))
shape4.draw_line((100, 100), (50, 70))
shape4.finish(closePath=True, color=(0,0,0), width=5)
shape4.commit()
drawings4 = list(page4.get_drawings())
assert len(drawings1) == len(drawings2) == 1
drawings1 = drawings1[0]
drawings2 = drawings2[0]
diff = _dict_difference( drawings1, drawings2)
assert diff == (set(), set(), {'closePath': (False, True)})
assert len(drawings3) == len(drawings4) == 1
drawings3 = drawings3[0]
drawings4 = drawings4[0]
diff = _dict_difference( drawings3, drawings4)
assert diff == (set(), set(), {'closePath': (False, True)})
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