def scroll_pages(self, height):
"""
Take screenshots and scroll down between them.
"""
good_offset = height / 2 - 40 # Constant browser chrome
filename = self.page_filename(1)
pixels_per_line = 100
scroll_lines = max(1, good_offset / pixels_per_line)
offsets = []
top_pages = self.max_pages
if top_pages > 2:
top_pages -= 1 # enable jump to last page
for page in range(2, top_pages + 1):
if hasattr(self, 'scroll_down'):
self.scroll_down(good_offset)
else:
for dummy in range(scroll_lines):
self.down()
time.sleep(0.5)
previous = filename
filename = self.page_filename(page)
self.screenshot(filename)
self.check_screenshot(filename)
offset = hashmatch.find_offset(previous, filename)
if not offset:
break
offsets.append(offset)
apparently = offset / scroll_lines
if apparently == 0:
if self.verbose:
print "Apparently no offset per keypress: %d/%d=%d" % (
offset, scroll_lines, apparently)
elif apparently != pixels_per_line:
pixels_per_line = apparently
scroll_lines = max(1, min(good_offset / pixels_per_line, 40))
if self.verbose:
print "%d pixels/keypress, %d keypresses/scroll" % (
pixels_per_line, scroll_lines)
else:
if top_pages == self.max_pages:
return offsets
self.scroll_bottom()
time.sleep(0.5)
previous2 = previous
previous = filename
filename = self.page_filename(self.max_pages)
self.screenshot(filename)
self.check_screenshot(filename)
offset = hashmatch.find_offset(previous, filename)
if offset:
# Need enough overlap to avoid browser chrome between pages.
offset = min(offset, height - 200)
# Just another page.
offsets.append(offset)
else:
# Check that it's not the same bottom page as before.
if not hashmatch.find_offset(previous2, filename):
# Bottom page, just tack it on.
offsets.append(height - 200)
return offsets
#!/usr/bin/env python # browsershots.org - Test your web design in different browsers # Copyright (C) 2007 Johann C. Rocholl <*****@*****.**> # # Browsershots is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation; either version 3 of the License, or # (at your option) any later version. # # Browsershots is distributed in the hope that it will be useful, but # WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program. If not, see <http://www.gnu.org/licenses/>. """ Find vertical offset between two PPM files. """ __revision__ = "$Rev: 2006 $" __date__ = "$Date: 2007-08-19 19:32:52 -0500 (Sun, 19 Aug 2007) $" __author__ = "$Author: johann $" import sys from shotfactory04.image import hashmatch arg0, filename1, filename2 = sys.argv print hashmatch.find_offset(filename1, filename2)
def scroll_pages(self, height):
"""
Take screenshots and scroll down between them.
"""
good_offset = height / 2 - 40 # Constant browser chrome
filename = self.page_filename(1)
pixels_per_line = 100
scroll_lines = max(1, good_offset / pixels_per_line)
offsets = []
top_pages = self.max_pages
if top_pages > 2:
top_pages -= 1 # enable jump to last page
for page in range(2, top_pages + 1):
previous = filename
filename = self.page_filename(page)
attempts = 1
if hasattr(self, 'scroll_attempts'):
attempts = self.scroll_attempts
for attempt in range(attempts):
if hasattr(self, 'scroll_down'):
self.scroll_down(good_offset)
else:
for dummy in range(scroll_lines):
self.down()
time.sleep(0.5)
self.screenshot(filename)
self.check_screenshot(filename)
offset = hashmatch.find_offset(previous, filename)
if offset:
break
if attempt + 1 < attempts:
os.rename(filename, previous)
if not offset:
break
offsets.append(offset)
apparently = offset / scroll_lines
if apparently == 0:
if self.verbose:
print "Apparently no offset per keypress: %d/%d=%d" % (
offset, scroll_lines, apparently)
elif apparently != pixels_per_line:
pixels_per_line = apparently
scroll_lines = max(1, min(good_offset / pixels_per_line, 40))
if self.verbose:
print "%d pixels/keypress, %d keypresses/scroll" % (
pixels_per_line, scroll_lines)
else:
if top_pages == self.max_pages:
return offsets
self.scroll_bottom()
time.sleep(0.5)
previous2 = previous
previous = filename
filename = self.page_filename(self.max_pages)
self.screenshot(filename)
self.check_screenshot(filename)
offset = hashmatch.find_offset(previous, filename)
if offset:
# Need enough overlap to avoid browser chrome between pages.
offset = min(offset, height - 200)
# Just another page.
offsets.append(offset)
else:
# Check that it's not the same bottom page as before.
if not hashmatch.find_offset(previous2, filename):
# Bottom page, just tack it on.
offsets.append(height - 200)
return offsets
#!/usr/bin/env python # browsershots.org - Test your web design in different browsers # Copyright (C) 2007 Johann C. Rocholl <*****@*****.**> # # Browsershots is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation; either version 3 of the License, or # (at your option) any later version. # # Browsershots is distributed in the hope that it will be useful, but # WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program. If not, see <http://www.gnu.org/licenses/>. """ Find vertical offset between two PPM files. """ __revision__ = "$Rev: 2006 $" __date__ = "$Date: 2007-08-20 02:32:52 +0200 (Mon, 20 Aug 2007) $" __author__ = "$Author: johann $" import sys from shotfactory04.image import hashmatch arg0, filename1, filename2 = sys.argv print hashmatch.find_offset(filename1, filename2)