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1000 lines
31 KiB
Python
1000 lines
31 KiB
Python
# coding: utf8
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# WeasyPrint converts web documents (HTML, CSS, ...) to PDF.
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# Copyright (C) 2011 Simon Sapin
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Affero General Public License as
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# published by the Free Software Foundation, either version 3 of the
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# License, or (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU Affero General Public License for more details.
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#
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# You should have received a copy of the GNU Affero General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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"""
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Test the layout.
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"""
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from attest import Tests, assert_hook # pylint: disable=W0611
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from . import TestPNGDocument, resource_filename
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from ..formatting_structure import boxes
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from .test_boxes import monkeypatch_validation
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from . import FONTS
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from ..layout.inlines import split_inline_box
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from ..layout.percentages import resolve_percentages
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SUITE = Tests()
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def body_children(page):
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"""Take a ``page`` and return its <body>’s children."""
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html = page.root_box
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assert html.element.tag == 'html'
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body, = html.children
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assert body.element.tag == 'body'
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return body.children
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def parse_without_layout(html_content):
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"""Parse some HTML, apply stylesheets, transform to boxes."""
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return TestPNGDocument.from_string(html_content).formatting_structure
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def validate_absolute_and_float(
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real_non_shorthand, name, values, required=False):
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"""Fake validator for ``absolute`` and ``float``."""
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value = values[0].value
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if (name == 'position' and value == 'absolute'
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) or (name == 'float' and value == 'left'):
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return [(name, value)]
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return real_non_shorthand(name, values, required)
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def parse(html_content):
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"""Parse some HTML, apply stylesheets, transform to boxes and lay out."""
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# TODO: remove this patching when asbolute and floats are validated
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with monkeypatch_validation(validate_absolute_and_float):
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document = TestPNGDocument.from_string(html_content)
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document.base_url = resource_filename('<inline HTML>')
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return document.pages
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@SUITE.test
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def test_page():
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"""Test the layout for ``@page`` properties."""
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pages = parse('<p>')
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page = pages[0]
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assert isinstance(page, boxes.PageBox)
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assert int(page.outer_width) == 793 # A4: 210 mm in pixels
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assert int(page.outer_height) == 1122 # A4: 297 mm in pixels
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page, = parse('''<style>@page { size: 2in 10in; }</style>''')
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assert page.outer_width == 192
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assert page.outer_height == 960
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page, = parse('''<style>@page { size: 242px; }</style>''')
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assert page.outer_width == 242
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assert page.outer_height == 242
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page, = parse('''<style>@page { size: letter; }</style>''')
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assert page.outer_width == 816 # 8.5in
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assert page.outer_height == 1056 # 11in
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page, = parse('''<style>@page { size: letter portrait; }</style>''')
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assert page.outer_width == 816 # 8.5in
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assert page.outer_height == 1056 # 11in
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page, = parse('''<style>@page { size: letter landscape; }</style>''')
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assert page.outer_width == 1056 # 11in
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assert page.outer_height == 816 # 8.5in
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page, = parse('''<style>@page { size: portrait; }</style>''')
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assert int(page.outer_width) == 793 # A4: 210 mm
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assert int(page.outer_height) == 1122 # A4: 297 mm
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page, = parse('''<style>@page { size: landscape; }</style>''')
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assert int(page.outer_width) == 1122 # A4: 297 mm
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assert int(page.outer_height) == 793 # A4: 210 mm
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page, = parse('''
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<style>@page { size: 200px 300px; margin: 10px 10% 20% 1in }
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body { margin: 8px }
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</style>
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<p style="margin: 0">
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''')
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assert page.outer_width == 200
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assert page.outer_height == 300
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assert page.position_x == 0
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assert page.position_y == 0
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assert page.width == 84 # 200px - 10% - 1 inch
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assert page.height == 230 # 300px - 10px - 20%
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html = page.root_box
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assert html.element.tag == 'html'
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assert html.position_x == 96 # 1in
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assert html.position_y == 10
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assert html.width == 84
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body, = html.children
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assert body.element.tag == 'body'
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assert body.position_x == 96 # 1in
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assert body.position_y == 10
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# body has margins in the UA stylesheet
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assert body.margin_left == 8
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assert body.margin_right == 8
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assert body.margin_top == 8
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assert body.margin_bottom == 8
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assert body.width == 68
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paragraph, = body.children
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assert paragraph.element.tag == 'p'
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assert paragraph.position_x == 104 # 1in + 8px
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assert paragraph.position_y == 18 # 10px + 8px
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assert paragraph.width == 68
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page, = parse('''
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<style>
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@page { size: 100px; margin: 1px 2px; padding: 4px 8px;
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border-width: 16px 32px; border-style: solid }
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</style>
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<body>
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''')
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assert page.width == 16 # 100 - 2 * 42
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assert page.height == 58 # 100 - 2 * 21
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html = page.root_box
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assert html.element.tag == 'html'
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assert html.position_x == 42 # 2 + 8 + 32
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assert html.position_y == 21 # 1 + 4 + 16
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@SUITE.test
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def test_block_widths():
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"""Test the blocks widths."""
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page, = parse('''
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<style>
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@page { margin: 0; size: 120px 2000px }
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body { margin: 0 }
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div { margin: 10px }
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p { padding: 2px; border-width: 1px; border-style: solid }
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</style>
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<div>
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<p></p>
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<p style="width: 50px"></p>
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</div>
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<div style="direction: rtl">
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<p style="width: 50px; direction: rtl"></p>
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</div>
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<div>
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<p style="margin: 0 10px 0 20px"></p>
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<p style="width: 50px; margin-left: 20px; margin-right: auto"></p>
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<p style="width: 50px; margin-left: auto; margin-right: 20px"></p>
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<p style="width: 50px; margin: auto"></p>
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<p style="margin-left: 20px; margin-right: auto"></p>
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<p style="margin-left: auto; margin-right: 20px"></p>
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<p style="margin: auto"></p>
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<p style="width: 200px; margin: auto"></p>
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</div>
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''')
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html = page.root_box
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assert html.element.tag == 'html'
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body, = html.children
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assert body.element.tag == 'body'
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assert body.width == 120
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divs = body.children
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# TODO: remove this when we have proper whitespace handling that
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# does not create anonymous block boxes for the whitespace between divs.
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divs = [box for box in divs if not isinstance(box, boxes.AnonymousBox)]
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paragraphs = []
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for div in divs:
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assert isinstance(div, boxes.BlockBox)
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assert div.element.tag == 'div'
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assert div.width == 100
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for paragraph in div.children:
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if isinstance(paragraph, boxes.AnonymousBox):
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# TODO: remove this when we have proper whitespace handling
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continue
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assert isinstance(paragraph, boxes.BlockBox)
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assert paragraph.element.tag == 'p'
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assert paragraph.padding_left == 2
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assert paragraph.padding_right == 2
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assert paragraph.border_left_width == 1
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assert paragraph.border_right_width == 1
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paragraphs.append(paragraph)
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assert len(paragraphs) == 11
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# width is 'auto'
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assert paragraphs[0].width == 94
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assert paragraphs[0].margin_left == 0
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assert paragraphs[0].margin_right == 0
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# No 'auto', over-constrained equation with ltr, the initial
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# 'margin-right: 0' was ignored.
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assert paragraphs[1].width == 50
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assert paragraphs[1].margin_left == 0
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assert paragraphs[1].margin_right == 44
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# No 'auto', over-constrained equation with ltr, the initial
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# 'margin-right: 0' was ignored.
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assert paragraphs[2].width == 50
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assert paragraphs[2].margin_left == 44
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assert paragraphs[2].margin_right == 0
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# width is 'auto'
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assert paragraphs[3].width == 64
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assert paragraphs[3].margin_left == 20
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assert paragraphs[3].margin_right == 10
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# margin-right is 'auto'
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assert paragraphs[4].width == 50
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assert paragraphs[4].margin_left == 20
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assert paragraphs[4].margin_right == 24
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# margin-left is 'auto'
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assert paragraphs[5].width == 50
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assert paragraphs[5].margin_left == 24
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assert paragraphs[5].margin_right == 20
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# Both margins are 'auto', remaining space is split in half
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assert paragraphs[6].width == 50
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assert paragraphs[6].margin_left == 22
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assert paragraphs[6].margin_right == 22
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# width is 'auto', other 'auto' are set to 0
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assert paragraphs[7].width == 74
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assert paragraphs[7].margin_left == 20
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assert paragraphs[7].margin_right == 0
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# width is 'auto', other 'auto' are set to 0
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assert paragraphs[8].width == 74
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assert paragraphs[8].margin_left == 0
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assert paragraphs[8].margin_right == 20
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# width is 'auto', other 'auto' are set to 0
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assert paragraphs[9].width == 94
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assert paragraphs[9].margin_left == 0
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assert paragraphs[9].margin_right == 0
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# sum of non-auto initially is too wide, set auto values to 0
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assert paragraphs[10].width == 200
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assert paragraphs[10].margin_left == 0
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assert paragraphs[10].margin_right == -106
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@SUITE.test
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def test_block_heights():
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"""Test the blocks heights."""
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page, = parse('''
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<style>
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@page { margin: 0; size: 100px 2000px }
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html, body { margin: 0 }
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div { margin: 4px; border-width: 2px; border-style: solid;
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padding: 4px }
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p { margin: 8px; border-width: 4px; border-style: solid;
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padding: 8px; height: 50px }
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</style>
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<div>
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<p></p>
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<!-- These two are not in normal flow: the do not contribute to
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the parent’s height. -->
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<p style="position: absolute"></p>
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<p style="float: left"></p>
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</div><div>
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<p></p>
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<p></p>
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<p></p>
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</div>
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''')
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divs = body_children(page)
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assert divs[0].height == 90
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assert divs[1].height == 90 * 3
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@SUITE.test
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def test_block_percentage_heights():
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"""Test the blocks heights set in percents."""
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page, = parse('''
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<style>
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html, body { margin: 0 }
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body { height: 50% }
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</style>
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<body>
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''')
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html = page.root_box
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assert html.element.tag == 'html'
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body, = html.children
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assert body.element.tag == 'body'
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# Since html’s height depend on body’s, body’s 50% means 'auto'
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assert body.height == 0
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page, = parse('''
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<style>
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html, body { margin: 0 }
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html { height: 300px }
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body { height: 50% }
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</style>
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<body>
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''')
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html = page.root_box
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assert html.element.tag == 'html'
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body, = html.children
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assert body.element.tag == 'body'
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# This time the percentage makes sense
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assert body.height == 150
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@SUITE.test
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def test_lists():
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"""Test the lists."""
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page, = parse('''
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<style>
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body { margin: 0 }
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ul { margin-left: 50px; list-style: inside circle }
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</style>
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<ul>
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<li>abc</li>
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</ul>
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''')
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unordered_list, = body_children(page)
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list_element, = [child for child in unordered_list.children
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if not isinstance(child, boxes.AnonymousBox)]
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line, = list_element.children
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marker, spacer, content = line.children
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assert marker.text == u'◦'
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assert spacer.text == u'\u00a0' # NO-BREAK SPACE
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assert content.text == u'abc'
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page, = parse('''
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<style>
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body { margin: 0 }
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ul { margin-left: 50px; }
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</style>
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<ul>
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<li>abc</li>
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</ul>
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''')
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unordered_list, = body_children(page)
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list_element, = [child for child in unordered_list.children
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if not isinstance(child, boxes.AnonymousBox)]
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marker = list_element.outside_list_marker
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font_size = marker.style.font_size
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assert marker.margin_right == 0.5 * font_size # 0.5em
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assert marker.position_x == (
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list_element.padding_box_x() - marker.width - marker.margin_right)
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assert marker.position_y == list_element.position_y
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assert marker.text == u'•'
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line, = list_element.children
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content, = line.children
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assert content.text == u'abc'
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@SUITE.test
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def test_empty_linebox():
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"""Test lineboxes with no content other than space-like characters."""
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page, = parse('''
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<style>
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p { font-size: 12px; width: 500px;
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font-family:%(fonts)s;}
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</style>
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<p> </p>
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''' % {'fonts': FONTS})
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paragraph, = body_children(page)
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line, = paragraph.children
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assert line.height == 0
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assert paragraph.height == 0
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@SUITE.test
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def test_breaking_linebox():
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"""Test lineboxes breaks with a lot of text and deep nesting."""
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page, = parse(u'''
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<style>
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p { font-size: 13px;
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width: 300px;
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font-family: %(fonts)s;
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background-color: #393939;
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color: #FFFFFF;
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line-height: 1;
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text-decoration: underline overline line-through;}
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</style>
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<p><em>Lorem<strong> Ipsum <span>is very</span>simply</strong><em>
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dummy</em>text of the printing and. naaaa </em> naaaa naaaa naaaa
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naaaa naaaa naaaa naaaa naaaa</p>
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''' % {'fonts': FONTS})
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html = page.root_box
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body, = html.children
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paragraph, = body.children
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assert len(list(paragraph.children)) == 3
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lines = paragraph.children
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for line in lines:
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assert line.style.font_size == 13
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assert line.element.tag == 'p'
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for child in line.children:
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assert child.element.tag in ('em', 'p')
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assert child.style.font_size == 13
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if isinstance(child, boxes.ParentBox):
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for child_child in child.children:
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assert child.element.tag in ('em', 'strong', 'span')
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assert child.style.font_size == 13
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@SUITE.test
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def test_linebox_text():
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"""Test the creation of line boxes."""
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page, = parse('''
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<style>
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p { width: 165px; font-family:%(fonts)s;}
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</style>
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<p><em>Lorem Ipsum</em>is very <strong>coool</strong></p>
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''' % {'fonts': FONTS})
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paragraph, = body_children(page)
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lines = list(paragraph.children)
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assert len(lines) == 2
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text = ' '.join(
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(''.join(box.text for box in line.descendants()
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if isinstance(box, boxes.TextBox)))
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for line in lines)
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assert text == 'Lorem Ipsumis very coool'
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@SUITE.test
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def test_linebox_positions():
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"""Test the position of line boxes."""
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page = u'''
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<style>
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p { width:%(width)spx; font-family:%(fonts)s;}
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</style>
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<p>this is test for <strong>Weasyprint</strong></p>'''
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page, = parse(page % {'fonts': FONTS, 'width': 165})
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paragraph, = body_children(page)
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lines = list(paragraph.children)
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assert len(lines) == 2
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ref_position_y = lines[0].position_y
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ref_position_x = lines[0].position_x
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for line in lines:
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assert ref_position_y == line.position_y
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assert ref_position_x == line.position_x
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for box in line.children:
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assert ref_position_x == box.position_x
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ref_position_x += box.width
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assert ref_position_y == box.position_y
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assert ref_position_x - line.position_x <= line.width
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ref_position_x = line.position_x
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ref_position_y += line.height
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@SUITE.test
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def test_forced_line_breaks():
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"""Test <pre> and <br>."""
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# These lines should be small enough to fit on the default A4 page
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# with the default 12pt font-size.
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page, = parse('''
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<style> pre { line-height: 42px }</style>
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<pre>Lorem ipsum dolor sit amet,
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consectetur adipiscing elit.
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Sed sollicitudin nibh
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et turpis molestie tristique.</pre>
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''')
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pre, = body_children(page)
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assert pre.element.tag == 'pre'
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lines = pre.children
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assert all(isinstance(line, boxes.LineBox) for line in lines)
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assert len(lines) == 7
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assert [line.height for line in lines] == [42] * 7
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page, = parse('''
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<style> p { line-height: 42px }</style>
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<p>Lorem ipsum dolor sit amet,<br>
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consectetur adipiscing elit.<br><br><br>
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Sed sollicitudin nibh<br>
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<br>
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|
||
et turpis molestie tristique.</p>
|
||
''')
|
||
pre, = body_children(page)
|
||
assert pre.element.tag == 'p'
|
||
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
|
||
|
||
|
||
#@SUITE.test
|
||
def test_page_breaks():
|
||
"""Test the page breaks."""
|
||
pages = parse('''
|
||
<style>
|
||
@page { size: 100px; margin: 10px }
|
||
body { margin: 0 }
|
||
div { height: 30px }
|
||
</style>
|
||
<div/><div/><div/><div/><div/>
|
||
''')
|
||
page_divs = []
|
||
for page in pages:
|
||
divs = body_children(page)
|
||
assert all([div.element.tag == 'div' for div in divs])
|
||
assert all([div.position_x == 10 for div in divs])
|
||
page_divs.append(divs)
|
||
|
||
positions_y = [[div.position_y for div in divs] for divs in page_divs]
|
||
assert positions_y == [[10, 40], [10, 40], [10]]
|
||
|
||
|
||
@SUITE.test
|
||
def test_inlinebox_spliting():
|
||
"""Test the inline boxes spliting."""
|
||
def get_inlinebox(content):
|
||
"""Helper returning a inlinebox with customizable style."""
|
||
page = u'<style>p { font-family:%(fonts)s;}</style>'
|
||
page = '%s <p>%s</p>' % (page, content)
|
||
html = parse_without_layout(page % {'fonts': FONTS})
|
||
body, = html.children
|
||
paragraph, = body.children
|
||
line, = paragraph.children
|
||
inline, = line.children
|
||
paragraph.width = 200
|
||
paragraph.height = 'auto'
|
||
return inline, paragraph
|
||
|
||
def get_parts(inlinebox, width, parent):
|
||
"""Yield the parts of the splitted ``inlinebox`` of given ``width``."""
|
||
skip = None
|
||
while 1:
|
||
box, skip, _ = split_inline_box(
|
||
inlinebox, 0, width, skip, parent, None)
|
||
yield box
|
||
if skip is None:
|
||
break
|
||
|
||
def get_joined_text(parts):
|
||
"""Get the joined text from ``parts``."""
|
||
return ''.join(part.children[0].text for part in parts)
|
||
|
||
def test_inlinebox_spacing(inlinebox, value, side):
|
||
"""Test the margin, padding and border-width of ``inlinebox``."""
|
||
if side in ['left', 'right']:
|
||
# Vertical margins on inlines are irrelevant.
|
||
assert getattr(inlinebox, 'margin_%s' % side) == value
|
||
assert getattr(inlinebox, 'padding_%s' % side) == value
|
||
assert getattr(inlinebox, 'border_%s_width' % side) == value
|
||
|
||
content = '''<strong>WeasyPrint is a free software visual rendering engine
|
||
for HTML and CSS</strong>'''
|
||
|
||
inlinebox, parent = get_inlinebox(content)
|
||
resolve_percentages(inlinebox, parent)
|
||
original_text = inlinebox.children[0].text
|
||
|
||
# test with width = 1000
|
||
parts = list(get_parts(inlinebox, 1000, parent))
|
||
assert len(parts) == 1
|
||
assert original_text == get_joined_text(parts)
|
||
|
||
inlinebox, parent = get_inlinebox(content)
|
||
resolve_percentages(inlinebox, parent)
|
||
original_text = inlinebox.children[0].text
|
||
|
||
# test with width = 100
|
||
parts = list(get_parts(inlinebox, 100, parent))
|
||
assert len(parts) > 1
|
||
assert original_text == get_joined_text(parts)
|
||
|
||
inlinebox, parent = get_inlinebox(content)
|
||
resolve_percentages(inlinebox, parent)
|
||
original_text = inlinebox.children[0].text
|
||
|
||
# test with width = 10
|
||
parts = list(get_parts(inlinebox, 10, parent))
|
||
assert len(parts) > 1
|
||
assert original_text == get_joined_text(parts)
|
||
|
||
# with margin-border-padding
|
||
content = '''<strong style="border:10px solid; margin:10px; padding:10px">
|
||
WeasyPrint is a free software visual rendering engine
|
||
for HTML and CSS</strong>'''
|
||
|
||
inlinebox, parent = get_inlinebox(content)
|
||
resolve_percentages(inlinebox, parent)
|
||
original_text = inlinebox.children[0].text
|
||
# test with width = 1000
|
||
parts = list(get_parts(inlinebox, 1000, parent))
|
||
assert len(parts) == 1
|
||
assert original_text == get_joined_text(parts)
|
||
for side in ('left', 'top', 'bottom', 'right'):
|
||
test_inlinebox_spacing(parts[0], 10, side)
|
||
|
||
inlinebox, parent = get_inlinebox(content)
|
||
resolve_percentages(inlinebox, parent)
|
||
original_text = inlinebox.children[0].text
|
||
|
||
# test with width = 1000
|
||
parts = list(get_parts(inlinebox, 100, parent))
|
||
assert len(parts) != 1
|
||
assert original_text == get_joined_text(parts)
|
||
first_inline_box = parts.pop(0)
|
||
test_inlinebox_spacing(first_inline_box, 10, 'left')
|
||
test_inlinebox_spacing(first_inline_box, 0, 'right')
|
||
last_inline_box = parts.pop()
|
||
test_inlinebox_spacing(last_inline_box, 10, 'right')
|
||
test_inlinebox_spacing(last_inline_box, 0, 'left')
|
||
for part in parts:
|
||
test_inlinebox_spacing(part, 0, 'right')
|
||
test_inlinebox_spacing(part, 0, 'left')
|
||
|
||
|
||
@SUITE.test
|
||
def test_inlinebox_text_after_spliting():
|
||
"""Test the inlinebox text after spliting."""
|
||
html = parse_without_layout('''
|
||
<style>p { width: 200px; font-family:%(fonts)s;}</style>
|
||
<p><strong><em><em><em>
|
||
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13
|
||
</em></em></em></strong></p>
|
||
''' % {'fonts': FONTS})
|
||
body, = html.children
|
||
paragraph, = body.children
|
||
line, = paragraph.children
|
||
inlinebox, = line.children
|
||
paragraph.width = 200
|
||
paragraph.height = 'auto'
|
||
resolve_percentages(inlinebox, paragraph)
|
||
|
||
original_text = ''.join(
|
||
part.text for part in inlinebox.descendants()
|
||
if isinstance(part, boxes.TextBox))
|
||
|
||
# test with width = 10
|
||
parts = []
|
||
skip = None
|
||
while 1:
|
||
box, skip, _ = split_inline_box(
|
||
inlinebox, 0, 100, skip, paragraph, None)
|
||
parts.append(box)
|
||
if skip is None:
|
||
break
|
||
assert len(parts) > 2
|
||
assert ''.join(
|
||
child.text
|
||
for part in parts
|
||
for child in part.descendants()
|
||
if isinstance(child, boxes.TextBox)
|
||
) == original_text
|
||
|
||
|
||
@SUITE.test
|
||
def test_page_and_linebox_breaking():
|
||
"""Test the linebox text after spliting linebox and page."""
|
||
# The empty <span/> tests a corner case
|
||
# in skip_first_whitespace()
|
||
pages = parse('''
|
||
<style>
|
||
div { font-family:%(fonts)s; font-size:22px}
|
||
@page { size: 100px; margin:2px; border:1px solid }
|
||
body { margin: 0 }
|
||
</style>
|
||
<div><span/>1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15</div>
|
||
''' % {'fonts': FONTS})
|
||
|
||
texts = []
|
||
for page in pages:
|
||
html = page.root_box
|
||
body, = html.children
|
||
div, = body.children
|
||
lines = div.children
|
||
for line in lines:
|
||
line_texts = []
|
||
for child in line.descendants():
|
||
if isinstance(child, boxes.TextBox):
|
||
line_texts.append(child.text)
|
||
texts.append(''.join(line_texts))
|
||
|
||
assert len(pages) == 2
|
||
assert ' '.join(texts) == \
|
||
'1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15'
|
||
|
||
|
||
@SUITE.test
|
||
def test_whitespace_processing():
|
||
"""Test various spaces and tabulations processing."""
|
||
for source in ['a', ' a ', ' \n \ta', ' a\t ']:
|
||
page, = parse('<p><em>%s</em></p>' % source)
|
||
html = page.root_box
|
||
body, = html.children
|
||
p, = body.children
|
||
line, = p.children
|
||
em, = line.children
|
||
text, = em.children
|
||
assert text.text == 'a', 'source was %r' % (source,)
|
||
|
||
page, = parse('<p style="white-space: pre-line">\n\n<em>%s</em></pre>'
|
||
% source.replace('\n', ' '))
|
||
html = page.root_box
|
||
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,)
|
||
|
||
|
||
@SUITE.test
|
||
def test_with_images():
|
||
"""Test that width, height and ratio of images are respected."""
|
||
# pattern.png is 4x4 px. Layout rules try to preserve the ratio, so
|
||
# the height should be 40px too:
|
||
page, = parse('<img src="pattern.png" style="width: 40px">')
|
||
html = page.root_box
|
||
body, = html.children
|
||
line, = body.children
|
||
img, = line.children
|
||
assert body.height == 40
|
||
assert img.position_y == 0
|
||
|
||
page, = parse('''
|
||
<img src="pattern.png" style="width: 40px">
|
||
<img src="pattern.png" style="width: 60px">
|
||
''')
|
||
html = page.root_box
|
||
body, = html.children
|
||
line, = body.children
|
||
img_1, img_2 = line.children
|
||
assert body.height == 60
|
||
assert img_1.height == 40
|
||
assert img_2.height == 60
|
||
assert img_1.position_y == 20
|
||
assert img_2.position_y == 0
|
||
|
||
"""
|
||
+-------+ <- position_y = 0
|
||
+-----+ |
|
||
40px | | | 60px
|
||
| | |
|
||
+-----+-------+ <- baseline
|
||
"""
|
||
page, = parse('''
|
||
<span>
|
||
<img src="pattern.png" style="width: 40px">
|
||
<img src="pattern.png" style="width: 60px">
|
||
</span>
|
||
''')
|
||
html = page.root_box
|
||
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
|
||
|
||
"""
|
||
+-------+ <- position_y = 0
|
||
35px | |
|
||
+-----+ | 60px
|
||
40px | | |
|
||
| +-------+ <- baseline
|
||
+-----+ 15px
|
||
|
||
"""
|
||
page, = parse('''
|
||
<span>
|
||
<img src="pattern.png" style="width: 40px; vertical-align: -15px">
|
||
<img src="pattern.png" style="width: 60px">
|
||
</span>
|
||
''')
|
||
html = page.root_box
|
||
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
|
||
|
||
# Same as previously, but with percentages
|
||
page, = parse('''
|
||
<span style="line-height: 10px">
|
||
<img src="pattern.png" style="width: 40px; vertical-align: -150%">
|
||
<img src="pattern.png" style="width: 60px">
|
||
</span>
|
||
''')
|
||
html = page.root_box
|
||
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
|
||
|
||
|
||
@SUITE.test
|
||
def test_text_align_left():
|
||
"""Test the left text alignment."""
|
||
|
||
"""
|
||
<--------------------> page, body
|
||
+-----+
|
||
+---+ |
|
||
| | |
|
||
+---+-----+
|
||
|
||
^ ^ ^ ^
|
||
x=0 x=40 x=100 x=200
|
||
"""
|
||
page, = parse('''
|
||
<style>
|
||
@page { size: 200px }
|
||
</style>
|
||
<body>
|
||
<img src="pattern.png" style="width: 40px">
|
||
<img src="pattern.png" style="width: 60px">
|
||
''')
|
||
html = page.root_box
|
||
body, = html.children
|
||
line, = body.children
|
||
img_1, img_2 = line.children
|
||
# initial value for text-align: left (in ltr text)
|
||
assert img_1.position_x == 0
|
||
assert img_2.position_x == 40
|
||
|
||
|
||
@SUITE.test
|
||
def test_text_align_right():
|
||
"""Test the right text alignment."""
|
||
|
||
"""
|
||
<--------------------> page, body
|
||
+-----+
|
||
+---+ |
|
||
| | |
|
||
+---+-----+
|
||
|
||
^ ^ ^ ^
|
||
x=0 x=100 x=200
|
||
x=140
|
||
"""
|
||
page, = parse('''
|
||
<style>
|
||
@page { size: 200px }
|
||
body { text-align: right }
|
||
</style>
|
||
<body>
|
||
<img src="pattern.png" style="width: 40px">
|
||
<img src="pattern.png" style="width: 60px">
|
||
''')
|
||
html = page.root_box
|
||
body, = html.children
|
||
line, = body.children
|
||
img_1, img_2 = line.children
|
||
assert img_1.position_x == 100 # 200 - 60 - 40
|
||
assert img_2.position_x == 140 # 200 - 60
|
||
|
||
|
||
@SUITE.test
|
||
def test_text_align_center():
|
||
"""Test the center text alignment."""
|
||
|
||
"""
|
||
<--------------------> page, body
|
||
+-----+
|
||
+---+ |
|
||
| | |
|
||
+---+-----+
|
||
|
||
^ ^ ^ ^
|
||
x= x=50 x=150
|
||
x=90
|
||
"""
|
||
page, = parse('''
|
||
<style>
|
||
@page { size: 200px }
|
||
body { text-align: center }
|
||
</style>
|
||
<body>
|
||
<img src="pattern.png" style="width: 40px">
|
||
<img src="pattern.png" style="width: 60px">
|
||
''')
|
||
html = page.root_box
|
||
body, = html.children
|
||
line, = body.children
|
||
img_1, img_2 = line.children
|
||
assert img_1.position_x == 50
|
||
assert img_2.position_x == 90
|
||
|
||
|
||
@SUITE.test
|
||
def test_text_indent():
|
||
"""Test the text-indent property."""
|
||
for indent in ['12px', '6%']: # 6% of 200px is 12px
|
||
page, = parse('''
|
||
<style>
|
||
@page { size: 220px }
|
||
body { margin: 10px; text-indent: %(indent)s }
|
||
</style>
|
||
<p>Some text that is long enough that it take at least three line,
|
||
but maybe more.
|
||
''' % {'indent': indent})
|
||
html = page.root_box
|
||
body, = html.children
|
||
paragraph, = body.children
|
||
lines = paragraph.children
|
||
text_1, = lines[0].children
|
||
text_2, = lines[1].children
|
||
text_3, = lines[2].children
|
||
assert text_1.position_x == 22 # 10px margin-left + 12px indent
|
||
assert text_2.position_x == 10 # No indent
|
||
assert text_3.position_x == 10 # No indent
|
||
|
||
|
||
@SUITE.test
|
||
def test_inline_replaced_auto_margins():
|
||
"""Test that auto margins are ignored for inline replaced boxes."""
|
||
page, = parse('''
|
||
<style>
|
||
@page { size: 200px }
|
||
img { display: inline; margin: auto; width: 50px }
|
||
</style>
|
||
<body>
|
||
<img src="pattern.png" />
|
||
''')
|
||
html = page.root_box
|
||
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
|
||
|
||
|
||
@SUITE.test
|
||
def test_empty_inline_auto_margins():
|
||
"""Test that horizontal auto margins are ignored for empty inline boxes."""
|
||
page, = parse('''
|
||
<style>
|
||
@page { size: 200px }
|
||
span { margin: auto }
|
||
</style>
|
||
<body><span></span>
|
||
''')
|
||
html = page.root_box
|
||
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
|