skia2/tools/test_pictures.py

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Python
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'''
Compares the rendererings of serialized SkPictures to expected images.
Launch with --help to see more information.
Copyright 2012 Google Inc.
Use of this source code is governed by a BSD-style license that can be
found in the LICENSE file.
'''
# common Python modules
import os
import optparse
import sys
import shutil
import tempfile
# modules declared within this same directory
import test_rendering
USAGE_STRING = 'Usage: %s input... expectedDir'
HELP_STRING = '''
Takes input SkPicture files and renders them as PNG files, and then compares
those resulting PNG files against PNG files found in expectedDir.
Each instance of "input" can be either a file (name must end in .skp), or a
directory (in which case this script will process all .skp files within the
directory).
'''
def ModeParse(option, opt_str, value, parser):
"""Parses the --mode option of the commandline.
The --mode option will either take in three parameters (if tile or
pow2tile) or a single parameter (otherwise).
"""
result = [value]
if value == "tile":
if (len(parser.rargs) < 2):
raise optparse.OptionValueError(("--mode tile mising width"
" and/or height parameters"))
result.extend(parser.rargs[:2])
del parser.rargs[:2]
elif value == "pow2tile":
if (len(parser.rargs) < 2):
raise optparse.OptionValueError(("--mode pow2tile mising minWidth"
" and/or height parameters"))
result.extend(parser.rargs[:2])
del parser.rargs[:2]
setattr(parser.values, option.dest, result)
def Main(args):
"""Allow other scripts to call this script with fake command-line args.
@param The commandline argument list
"""
parser = optparse.OptionParser(USAGE_STRING % '%prog' + HELP_STRING)
parser.add_option('--render_dir', dest='render_dir',
help = ("specify the location to output the rendered files."
" Default is a temp directory."))
parser.add_option('--diff_dir', dest='diff_dir',
help = ("specify the location to output the diff files."
" Default is a temp directory."))
parser.add_option('--mode', dest='mode', type='string',
action="callback", callback=ModeParse,
help = ("specify how rendering is to be done."))
parser.add_option('--device', dest='device',
help = ("specify the device to render to."))
options, arguments = parser.parse_args(args)
if (len(arguments) < 3):
print("Expected at least one input and one ouput folder.")
parser.print_help()
sys.exit(-1)
inputs = arguments[1:-1]
expected_dir = arguments[-1]
extra_args = ''
if (options.mode is not None):
extra_args += ' --mode %s' % ' '.join(options.mode)
if (options.device is not None):
extra_args += ' --device %s' % options.device
test_rendering.TestRenderSkps(inputs, expected_dir, options.render_dir,
options.diff_dir, 'render_pictures',
extra_args)
if __name__ == '__main__':
Main(sys.argv)