"""Tests for inlines layout.""" import pytest from weasyprint.formatting_structure import boxes from ..testing_utils import SANS_FONTS, assert_no_logs, render_pages @assert_no_logs def test_empty_linebox(): page, = render_pages('

') html, = page.children body, = html.children paragraph, = body.children assert len(paragraph.children) == 0 assert paragraph.height == 0 @pytest.mark.xfail @assert_no_logs def test_empty_linebox_removed_space(): # Whitespace removed at the beginning of the line => empty line => no line page, = render_pages('''


''') page, = render_pages('

') html, = page.children body, = html.children paragraph, = body.children # TODO: The second line should be removed assert len(paragraph.children) == 1 @assert_no_logs def test_breaking_linebox(): page, = render_pages('''

Lorem Ipsum is verysimply dummytext of the printing and. naaaa naaaa naaaa naaaa naaaa naaaa naaaa naaaa naaaa

''' % {'fonts': SANS_FONTS}) html, = page.children body, = html.children paragraph, = body.children assert len(list(paragraph.children)) == 3 lines = paragraph.children for line in lines: assert line.style['font_size'] == 13 assert line.element_tag == 'p' for child in line.children: assert child.element_tag in ('em', 'p') assert child.style['font_size'] == 13 for child_child in child.children: assert child.element_tag in ('em', 'strong', 'span') assert child.style['font_size'] == 13 @assert_no_logs def test_position_x_ltr(): page, = render_pages(''' a
b
c''') html, = page.children body, = html.children line1, line2, line3 = body.children span1, = line1.children assert span1.position_x == 0 text1, br1 = span1.children assert text1.position_x == 15 + 3 + 1 span2, = line2.children assert span2.position_x == 0 text2, br2 = span2.children assert text2.position_x == 0 span3, = line3.children assert span3.position_x == 0 text3, = span3.children assert text3.position_x == 0 @assert_no_logs def test_position_x_rtl(): page, = render_pages(''' a
b
c''') html, = page.children body, = html.children line1, line2, line3 = body.children span1, = line1.children text1, br1 = span1.children assert span1.position_x == 100 - text1.width - (10 + 2 + 1) assert text1.position_x == 100 - text1.width - (10 + 2 + 1) span2, = line2.children text2, br2 = span2.children assert span2.position_x == 100 - text2.width assert text2.position_x == 100 - text2.width span3, = line3.children text3, = span3.children assert span3.position_x == 100 - text3.width - (15 + 3 + 1) assert text3.position_x == 100 - text3.width @assert_no_logs def test_breaking_linebox_regression_1(): # See https://unicode.org/reports/tr14/ page, = render_pages('
a\nb\rc\r\nd\u2029e
') html, = page.children body, = html.children pre, = body.children lines = pre.children texts = [] for line in lines: text_box, = line.children texts.append(text_box.text) assert texts == ['a', 'b', 'c', 'd', 'e'] @assert_no_logs def test_breaking_linebox_regression_2(): html_sample = '''

ab c defg hi

''' for i in range(16): page, = render_pages(html_sample % i) html, = page.children body, = html.children p, = body.children lines = p.children if i in (0, 1, 2, 3): line_1, line_2, line_3, line_4 = lines textbox_1, = line_1.children assert textbox_1.text == 'ab' span_1, = line_2.children textbox_1, = span_1.children assert textbox_1.text == 'c' span_1, textbox_2 = line_3.children textbox_1, = span_1.children assert textbox_1.text == 'def' assert textbox_2.text == 'g' textbox_1, = line_4.children assert textbox_1.text == 'hi' elif i in (4, 5, 6, 7, 8): line_1, line_2, line_3 = lines textbox_1, span_1 = line_1.children assert textbox_1.text == 'ab ' textbox_2, = span_1.children assert textbox_2.text == 'c' span_1, textbox_2 = line_2.children textbox_1, = span_1.children assert textbox_1.text == 'def' assert textbox_2.text == 'g' textbox_1, = line_3.children assert textbox_1.text == 'hi' elif i in (9, 10): line_1, line_2 = lines textbox_1, span_1 = line_1.children assert textbox_1.text == 'ab ' textbox_2, = span_1.children assert textbox_2.text == 'c' span_1, textbox_2 = line_2.children textbox_1, = span_1.children assert textbox_1.text == 'def' assert textbox_2.text == 'g hi' elif i in (11, 12, 13): line_1, line_2 = lines textbox_1, span_1, textbox_3 = line_1.children assert textbox_1.text == 'ab ' textbox_2, = span_1.children assert textbox_2.text == 'c def' assert textbox_3.text == 'g' textbox_1, = line_2.children assert textbox_1.text == 'hi' else: line_1, = lines textbox_1, span_1, textbox_3 = line_1.children assert textbox_1.text == 'ab ' textbox_2, = span_1.children assert textbox_2.text == 'c def' assert textbox_3.text == 'g hi' @assert_no_logs def test_breaking_linebox_regression_3(): # Regression test for #560. page, = render_pages( '
' 'aaaa aaaa a [aaa]') html, = page.children body, = html.children div, = body.children line1, line2, line3, line4 = div.children assert line1.children[0].text == line2.children[0].text == 'aaaa' assert line3.children[0].text == 'a' text1, span, text2 = line4.children assert text1.text == '[' assert text2.text == ']' assert span.children[0].text == 'aaa' @assert_no_logs def test_breaking_linebox_regression_4(): # Regression test for #560. page, = render_pages( '
' 'aaaa a b cd') html, = page.children body, = html.children div, = body.children line1, line2, line3 = div.children assert line1.children[0].text == 'aaaa' assert line2.children[0].text == 'a ' assert line2.children[1].children[0].text == 'b' assert line3.children[0].children[0].text == 'c' assert line3.children[1].text == 'd' @assert_no_logs def test_breaking_linebox_regression_5(): # Regression test for #580. page, = render_pages( '
' 'aaaa aaaa a a abc') html, = page.children body, = html.children div, = body.children line1, line2, line3, line4 = div.children assert line1.children[0].children[0].text == 'aaaa' assert line2.children[0].children[0].text == 'aaaa' assert line3.children[0].children[0].text == 'a a' assert line4.children[0].children[0].text == 'a' assert line4.children[1].children[0].text == 'bc' @assert_no_logs def test_breaking_linebox_regression_6(): # Regression test for #586. page, = render_pages( '
' 'a a /ccc') html, = page.children body, = html.children div, = body.children line1, line2 = div.children assert line1.children[0].text == 'a a' assert line2.children[0].children[0].text == '/ccc' @assert_no_logs def test_breaking_linebox_regression_7(): # Regression test for #660. page, = render_pages( '
' 'abc d ef') html, = page.children body, = html.children div, = body.children line1, line2, line3 = div.children assert line1.children[0].children[0].children[0].text == 'abc' assert line2.children[0].children[0].children[0].text == 'd' assert line3.children[0].children[0].children[0].text == 'e' assert line3.children[1].children[0].text == 'f' @assert_no_logs def test_breaking_linebox_regression_8(): # Regression test for #783. page, = render_pages( '

\n' 'aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n' 'bbbbbbbbbbb\n' 'ccccddd

') html, = page.children body, = html.children p, = body.children line1, line2 = p.children assert line1.children[0].children[0].text == ( 'aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa bbbbbbbbbbb') assert line2.children[0].children[0].children[0].text == 'cccc' assert line2.children[1].text == 'ddd' @pytest.mark.xfail @assert_no_logs def test_breaking_linebox_regression_9(): # Regression test for #783. # TODO: inlines.can_break_inside return False for span but we can break # before the tag. can_break_inside should be fixed. page, = render_pages( '

\n' 'aaaaaaaaaaaaaaaaaaaaaaaaaaaaaabbbbbbbbbbbbb\n' 'ccccddd

') html, = page.children body, = html.children p, = body.children line1, line2 = p.children assert line1.children[0].children[0].text == ( 'aaaaaaaaaaaaaaaaaaaaaaaaaaaaaabbbbbbbbbbbbb') assert line2.children[0].children[0].children[0].text == 'cccc' assert line2.children[1].text == 'ddd' @assert_no_logs def test_breaking_linebox_regression_10(): # Regression test for #923. page, = render_pages( '

' ' ' ' xxxxxx YYY yyyyyy yyy' ' ZZZZZZ zzzzz' ' )x ' '

') html, = page.children body, = html.children p, = body.children line1, line2, line3, line4 = p.children assert line1.children[0].children[0].children[0].text == 'xxxxxx YYY' assert line2.children[0].children[0].children[0].text == 'yyyyyy yyy' assert line3.children[0].children[0].text == 'ZZZZZZ zzzzz' assert line4.children[0].text == ')x' @assert_no_logs def test_breaking_linebox_regression_11(): # Regression test for #953. page, = render_pages( '

' ' line 1
123 567 90x' '

') html, = page.children body, = html.children p, = body.children line1, line2, line3 = p.children assert line1.children[0].text == 'line 1' assert line2.children[0].children[0].text == '123 567' assert line3.children[0].children[0].text == '90' assert line3.children[1].text == 'x' @assert_no_logs def test_breaking_linebox_regression_12(): # Regression test for #953. page, = render_pages( '

' '
123 567 90x' '

') html, = page.children body, = html.children p, = body.children line1, line2, line3 = p.children assert line2.children[0].children[0].text == '123 567' assert line3.children[0].children[0].text == '90' assert line3.children[1].text == 'x' @assert_no_logs def test_breaking_linebox_regression_13(): # Regression test for #953. page, = render_pages( '

' ' 123 567 90 123 567 90x' '

') html, = page.children body, = html.children p, = body.children line1, line2, line3 = p.children assert line1.children[0].text == '123 567 90' assert line2.children[0].children[0].text == '123 567' assert line3.children[0].children[0].text == '90' assert line3.children[1].text == 'x' @assert_no_logs def test_breaking_linebox_regression_14(): # Regression test for #1638. page, = render_pages( '' ' a bc') html, = page.children body, = html.children line1, line2 = body.children assert line1.children[0].children[0].children[0].text == 'a' assert line2.children[0].children[0].text == 'b' assert line2.children[1].children[0].text == 'c' @assert_no_logs def test_breaking_linebox_regression_15(): # Regression test for #5507. page, = render_pages( '' '
ab©\n'
        'déf\n'
        'ghïj\n'
        'klm
') html, = page.children body, = html.children pre, = body.children line1, line2, line3, line4 = pre.children assert line1.children[0].text == 'ab©' assert line2.children[0].text == 'déf' assert line3.children[0].text == 'ghïj' assert line4.children[0].text == 'klm' assert line1.children[0].width == 4 * 3 assert line2.children[0].width == 4 * 3 assert line3.children[0].width == 4 * 4 assert line4.children[0].width == 4 * 3 assert pre.width == 4 * 4 @assert_no_logs def test_breaking_linebox_regression_16(): # Regression test for #1973. page, = render_pages( '' '

tést

' '
ab©\n'
        'déf\n'
        'ghïj\n'
        'klm
') html, = page.children body, = html.children p, pre = body.children line1, = p.children assert line1.children[0].text == 'tést' assert p.width == 4 * 4 line1, line2, line3, line4 = pre.children assert line1.children[0].text == 'ab©' assert line2.children[0].text == 'déf' assert line3.children[0].text == 'ghïj' assert line4.children[0].text == 'klm' assert line1.children[0].width == 4 * 3 assert line2.children[0].width == 4 * 3 assert line3.children[0].width == 4 * 4 assert line4.children[0].width == 4 * 3 @assert_no_logs def test_linebox_text(): page, = render_pages('''

Lorem Ipsumis very coool

''' % {'fonts': SANS_FONTS}) html, = page.children body, = html.children paragraph, = body.children lines = list(paragraph.children) assert len(lines) == 2 text = ' '.join( (''.join(box.text for box in line.descendants() if isinstance(box, boxes.TextBox))) for line in lines) assert text == 'Lorem Ipsumis very coool' @assert_no_logs def test_linebox_positions(): for width, expected_lines in [(165, 2), (1, 5), (0, 5)]: page = '''

this is test for Weasyprint

''' page, = render_pages(page % {'fonts': SANS_FONTS, 'width': width}) html, = page.children body, = html.children paragraph, = body.children lines = list(paragraph.children) assert len(lines) == expected_lines ref_position_y = lines[0].position_y ref_position_x = lines[0].position_x for line in lines: assert ref_position_y == line.position_y assert ref_position_x == line.position_x for box in line.children: assert ref_position_x == box.position_x ref_position_x += box.width assert ref_position_y == box.position_y assert ref_position_x - line.position_x <= line.width ref_position_x = line.position_x ref_position_y += line.height @assert_no_logs def test_forced_line_breaks_pre(): # These lines should be small enough to fit on the default A4 page # with the default 12pt font-size. page, = render_pages(''' 
Lorem ipsum dolor sit amet,
          consectetur adipiscing elit.


          Sed sollicitudin nibh

          et turpis molestie tristique.
''') html, = page.children body, = html.children pre, = body.children assert pre.element_tag == 'pre' lines = pre.children assert all(isinstance(line, boxes.LineBox) for line in lines) assert len(lines) == 7 assert [line.height for line in lines] == [42] * 7 @assert_no_logs def test_forced_line_breaks_paragraph(): page, = render_pages('''

Lorem ipsum dolor sit amet,
consectetur adipiscing elit.


Sed sollicitudin nibh

et turpis molestie tristique.

''') html, = page.children body, = html.children paragraph, = body.children assert paragraph.element_tag == 'p' lines = paragraph.children assert all(isinstance(line, boxes.LineBox) for line in lines) assert len(lines) == 7 assert [line.height for line in lines] == [42] * 7 @assert_no_logs def test_inlinebox_splitting(): # Regression test for #389. # The text is strange to test some corner cases. for width in [10000, 100, 10, 0]: page, = render_pages('''

WeasyPrint is a frée softwäre ./ visual rendèring enginè for HTML !!! and CSS.

''' % {'fonts': SANS_FONTS, 'width': width}) html, = page.children body, = html.children paragraph, = body.children lines = paragraph.children if width == 10000: assert len(lines) == 1 else: assert len(lines) > 1 text_parts = [] for line in lines: strong, = line.children text, = strong.children text_parts.append(text.text) assert ' '.join(text_parts) == ( 'WeasyPrint is a frée softwäre ./ visual ' 'rendèring enginè for HTML !!! and CSS.') @assert_no_logs def test_whitespace_processing(): for source in ['a', ' a ', ' \n \ta', ' a\t ']: page, = render_pages('

%s

' % source) html, = page.children body, = html.children p, = body.children line, = p.children em, = line.children text, = em.children assert text.text == 'a', 'source was %r' % (source,) page, = render_pages( '

\n\n%s' % source.replace('\n', ' ')) html, = page.children body, = html.children p, = body.children _line1, _line2, line3 = p.children em, = line3.children text, = em.children assert text.text == 'a', 'source was %r' % (source,) @assert_no_logs def test_inline_replaced_auto_margins(): page, = render_pages(''' ''') html, = page.children body, = html.children line, = body.children img, = line.children assert img.margin_top == 0 assert img.margin_right == 0 assert img.margin_bottom == 0 assert img.margin_left == 0 @assert_no_logs def test_empty_inline_auto_margins(): page, = render_pages(''' ''') html, = page.children body, = html.children block, = body.children span, = block.children assert span.margin_top != 0 assert span.margin_right == 0 assert span.margin_bottom != 0 assert span.margin_left == 0 @assert_no_logs def test_font_stretch(): page, = render_pages('''

Hello, world!

Hello, world!

''' % SANS_FONTS) html, = page.children body, = html.children p_1, p_2 = body.children normal = p_1.width condensed = p_2.width assert condensed < normal @assert_no_logs @pytest.mark.parametrize(('source', 'lines_count'), [ ('hyphénation', 1), # Default: no hyphenation ('hyphénation', 1), # lang only: no hyphenation ('hyphénation', 1), # hyphens only: no hyph. ('hyphénation', 4), # both: hyph. ('hyp­hénation', 2), # Hyphenation with soft hyphens ('hyp­hénation', 1), # … unless disabled ]) def test_line_count(source, lines_count): page, = render_pages('' + source) html, = page.children body, = html.children lines = body.children assert len(lines) == lines_count @assert_no_logs def test_vertical_align_1(): # +-------+ <- position_y = 0 # +-----+ | # 40px | | | 60px # | | | # +-----+-------+ <- baseline page, = render_pages(''' ''') html, = page.children body, = html.children line, = body.children span, = line.children img_1, img_2 = span.children assert img_1.height == 40 assert img_2.height == 60 assert img_1.position_y == 20 assert img_2.position_y == 0 # 60px + the descent of the font below the baseline assert 60 < line.height < 70 assert body.height == line.height @assert_no_logs def test_vertical_align_2(): # +-------+ <- position_y = 0 # 35px | | # +-----+ | 60px # 40px | | | # | +-------+ <- baseline # +-----+ 15px page, = render_pages(''' ''') html, = page.children body, = html.children line, = body.children span, = line.children img_1, img_2 = span.children assert img_1.height == 40 assert img_2.height == 60 assert img_1.position_y == 35 assert img_2.position_y == 0 assert line.height == 75 assert body.height == line.height @assert_no_logs def test_vertical_align_3(): # Same as previously, but with percentages page, = render_pages(''' ''') html, = page.children body, = html.children line, = body.children span, = line.children img_1, img_2 = span.children assert img_1.height == 40 assert img_2.height == 60 assert img_1.position_y == 35 assert img_2.position_y == 0 assert line.height == 75 assert body.height == line.height @assert_no_logs def test_vertical_align_4(): # Same again, but have the vertical-align on an inline box. page, = render_pages(''' ''') html, = page.children body, = html.children line, = body.children span_1, = line.children span_2, _whitespace, img_2 = span_1.children img_1, = span_2.children assert img_1.height == 40 assert img_2.height == 60 assert img_1.position_y == 35 assert img_2.position_y == 0 assert line.height == 75 assert body.height == line.height @assert_no_logs def test_vertical_align_5(): # Same as previously, but with percentages page, = render_pages( '' '' '') html, = page.children body, = html.children line, = body.children span, = line.children img_1, img_2 = span.children assert img_1.height == 40 assert img_2.height == 60 # middle of the image (position_y + 20) is at half the ex-height above # the baseline of the parent. The ex-height of weasyprint.otf is 0.8em # TODO: ex unit doesn't work with @font-face fonts, see computed_values.py # assert img_1.position_y == 35.2 # 60 - 0.5 * 0.8 * font-size - 40/2 assert img_2.position_y == 0 # assert line.height == 75.2 assert body.height == line.height @assert_no_logs def test_vertical_align_6(): # sup and sub currently mean +/- 0.5 em # With the initial 16px font-size, that’s 8px. page, = render_pages(''' ''') html, = page.children body, = html.children line, = body.children span, = line.children img_1, img_2, img_3 = span.children assert img_1.height == 60 assert img_2.height == 40 assert img_3.height == 40 assert img_1.position_y == 0 assert img_2.position_y == 12 # 20 - 16 * 0.5 assert img_3.position_y == 28 # 20 + 16 * 0.5 assert line.height == 68 assert body.height == line.height @assert_no_logs def test_vertical_align_7(): page, = render_pages(''' ''') html, = page.children body, = html.children line, = body.children span, = line.children img_1, img_2 = span.children assert img_1.height == 4 assert img_2.height == 4 assert img_1.position_y == 0 assert img_2.position_y == 12 # 16 - 4 assert line.height == 16 assert body.height == line.height @assert_no_logs def test_vertical_align_8(): # This case used to cause an exception: # The second span has no children but should count for line heights # since it has padding. page, = render_pages(''' ''') html, = page.children body, = html.children line, = body.children span_1, = line.children span_2, = span_1.children assert span_1.height == 16 assert span_2.height == 16 # The line’s strut does not has 'line-height: normal' but the result should # be smaller than 1.5. assert span_1.margin_height() == 24 assert span_2.margin_height() == 24 assert line.height == 24 @assert_no_logs def test_vertical_align_9(): page, = render_pages('''
foo
''') html, = page.children body, = html.children line, = body.children span, div_1 = line.children assert line.height == 178 assert body.height == line.height # Same as earlier img_1, img_2 = span.children assert img_1.height == 40 assert img_2.height == 60 assert img_1.position_y == 138 assert img_2.position_y == 103 div_2, = div_1.children div_3, div_4 = div_2.children div_line, = div_4.children div_img_1, div_img_2 = div_line.children assert div_1.position_y == 0 assert div_1.height == 175 assert div_3.height == 100 assert div_line.height == 75 assert div_img_1.height == 40 assert div_img_2.height == 60 assert div_img_1.position_y == 135 assert div_img_2.position_y == 100 @assert_no_logs def test_vertical_align_10(): # The first two images bring the top of the line box 30px above # the baseline and 10px below. # Each of the inner span page, = render_pages(''' ''') html, = page.children body, = html.children line, = body.children span_1, = line.children img_1, img_2, span_2, span_4 = span_1.children img_3, span_3 = span_2.children img_4, = span_3.children img_5, = span_4.children assert body.height == line.height assert line.height == 40 assert img_1.position_y == 0 assert img_2.position_y == 36 assert img_3.position_y == 6 assert img_4.position_y == 36 assert img_5.position_y == 30 @assert_no_logs def test_vertical_align_11(): page, = render_pages(''' ''') html, = page.children body, = html.children line, = body.children span, = line.children img_1, img_2 = span.children assert img_1.position_y == 96 assert img_2.position_y == 0 @assert_no_logs def test_vertical_align_12(): # Reference for the next test page, = render_pages(''' ''') html, = page.children body, = html.children line, = body.children span, = line.children img_1, = span.children assert img_1.position_y == 0 @assert_no_logs def test_vertical_align_13(): # Should be the same as above page, = render_pages(''' ''') html, = page.children body, = html.children line_1, = body.children span, = line_1.children line_2, = span.children img_1, = line_2.children assert img_1.element_tag == 'img' assert img_1.position_y == 0 @assert_no_logs def test_box_decoration_break_inline_slice(): # https://www.w3.org/TR/css-backgrounds-3/#the-box-decoration-break page_1, = render_pages(''' a
b
c''') html, = page_1.children body, = html.children line_1, line_2, line_3 = body.children span, = line_1.children assert span.width == 16 assert span.margin_width() == 16 + 5 + 1 text, br = span.children assert text.position_x == 5 + 1 span, = line_2.children assert span.width == 16 assert span.margin_width() == 16 text, br = span.children assert text.position_x == 0 span, = line_3.children assert span.width == 16 assert span.margin_width() == 16 + 5 + 1 text, = span.children assert text.position_x == 0 @assert_no_logs def test_box_decoration_break_inline_clone(): # https://www.w3.org/TR/css-backgrounds-3/#the-box-decoration-break page_1, = render_pages(''' a
b
c''') html, = page_1.children body, = html.children line_1, line_2, line_3 = body.children span, = line_1.children assert span.width == 16 assert span.margin_width() == 16 + 2 * (5 + 1) text, br = span.children assert text.position_x == 5 + 1 span, = line_2.children assert span.width == 16 assert span.margin_width() == 16 + 2 * (5 + 1) text, br = span.children assert text.position_x == 5 + 1 span, = line_3.children assert span.width == 16 assert span.margin_width() == 16 + 2 * (5 + 1) text, = span.children assert text.position_x == 5 + 1 @assert_no_logs def test_bidi_position_x_invariant(): page, = render_pages('''
abc
 
abc
''') html, = page.children body, = html.children block_ltr, _, block_rtl = body.children line_ltr, = block_ltr.children text_ltr, = line_ltr.children line_rtl, = block_rtl.children text_rtl, = line_rtl.children assert block_ltr.position_x == block_rtl.position_x assert line_ltr.position_x == line_rtl.position_x assert text_ltr.position_x == text_rtl.position_x @assert_no_logs def test_nested_waiting_children_width(): # Regression test for #2275. page, = render_pages( '' 'a bc') html, = page.children body, = html.children line1, line2 = body.children assert line1.children[0].children[0].children[0].text == 'a' assert line2.children[0].children[0].children[0].text == 'b' assert line2.children[0].children[1].text == 'c'