2011-07-12 19:53:15 +04:00
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# 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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2011-07-29 03:14:05 +04:00
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import os.path
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2011-07-12 19:53:15 +04:00
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2011-07-29 03:14:05 +04:00
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import png
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from attest import Tests, assert_hook
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2011-07-12 19:53:15 +04:00
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2011-08-10 18:19:32 +04:00
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from . import resource_filename
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2011-07-29 03:14:05 +04:00
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from ..document import PNGDocument
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2011-08-10 18:54:26 +04:00
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from . import make_expected_results
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make_expected_results.make_all()
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2011-07-12 19:53:15 +04:00
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2011-07-29 03:14:05 +04:00
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suite = Tests()
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2011-07-12 19:53:15 +04:00
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2011-07-29 03:14:05 +04:00
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def make_filename(dirname, basename):
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return os.path.join(os.path.dirname(__file__), dirname, basename + '.png')
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2011-07-12 20:27:33 +04:00
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2011-08-10 21:33:16 +04:00
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def format_pixel(lines, x, y):
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pixel = lines[y][3 * x:3 * (x + 1)]
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return ('#' + 3 * '%02x') % tuple(pixel)
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2011-07-29 03:14:05 +04:00
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def test_pixels(name, expected_width, expected_height, html):
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reader = png.Reader(filename=make_filename('expected_results', name))
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width, height, expected_lines, meta = reader.read()
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assert width == expected_width
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assert height == height
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assert meta['greyscale'] == False
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2011-08-08 23:20:43 +04:00
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assert meta['alpha'] == False
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assert meta['bitdepth'] == 8
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expected_lines = list(expected_lines)
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2011-07-12 20:27:33 +04:00
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2011-07-29 03:14:05 +04:00
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document = PNGDocument.from_string(html)
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2011-08-10 18:19:32 +04:00
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# Dummy filename, but in the right directory.
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document.base_url = resource_filename('<test>')
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2011-07-29 03:14:05 +04:00
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filename = make_filename('test_results', name)
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2011-08-05 17:55:34 +04:00
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document.write_to(filename)
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2011-07-13 13:31:44 +04:00
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2011-07-12 20:27:33 +04:00
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2011-07-29 03:14:05 +04:00
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reader = png.Reader(filename=filename)
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width, height, lines, meta = reader.read()
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lines = list(lines)
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2011-07-12 19:53:15 +04:00
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2011-07-29 03:14:05 +04:00
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assert width == expected_width
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assert height == height
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assert meta['greyscale'] == False
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assert meta['alpha'] == False
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assert meta['bitdepth'] == 8
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assert len(lines) == height
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assert len(lines[0]) == width * 3
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if lines != expected_lines:
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for y in xrange(height):
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for x in xrange(width):
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2011-08-10 21:33:16 +04:00
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pixel = format_pixel(lines, x, y)
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expected_pixel = format_pixel(expected_lines, x, y)
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assert pixel == expected_pixel, \
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'Pixel (%i, %i) does not match in %s' % (x, y, name)
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2011-07-29 03:14:05 +04:00
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@suite.test
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def test_canvas_background():
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test_pixels('all_blue', 10, 10, '''
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<style>
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@page { size: 10px }
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/* body’s background propagates to the whole canvas */
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body { margin: 2px; background: #00f; height: 5px }
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</style>
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<body>
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''')
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test_pixels('blocks', 10, 10, '''
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<style>
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@page { size: 10px }
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/* html’s background propagates to the whole canvas */
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html { margin: 1px; background: #f00 }
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/* html has a background, so body’s does not propagate */
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body { margin: 1px; background: #00f; height: 5px }
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2011-07-29 03:14:05 +04:00
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</style>
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<body>
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''')
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2011-08-10 18:19:32 +04:00
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2011-08-10 18:52:34 +04:00
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@suite.test
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def test_background_image():
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2011-08-11 14:44:37 +04:00
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for name, css in [
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2011-08-10 21:33:16 +04:00
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('repeat', ''),
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('repeat_x', 'repeat-x'),
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('repeat_y', 'repeat-y'),
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('left_top', 'no-repeat 0 0%'),
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('center_top', 'no-repeat 50% 0px'),
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('right_top', 'no-repeat 6px top'),
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('left_center', 'no-repeat left center'),
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('center_center', 'no-repeat 3px 3px'),
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('right_center', 'no-repeat 100% 50%'),
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('left_bottom', 'no-repeat 0% bottom'),
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('center_bottom', 'no-repeat center 6px'),
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('right_bottom', 'no-repeat 6px 100%'),
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]:
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test_pixels('background_' + name, 14, 16, '''
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<style>
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@page { size: 14px 16px }
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html { background: #fff }
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body { margin: 2px; height: 10px;
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background: url(pattern.png) %s }
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</style>
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<body>
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''' % (css,))
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