зеркало из https://github.com/mozilla/moz-skia.git
119 строки
4.0 KiB
Python
119 строки
4.0 KiB
Python
'''
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Compares the rendererings of serialized SkPictures to expected result.
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Copyright 2012 Google Inc.
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Use of this source code is governed by a BSD-style license that can be
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found in the LICENSE file.
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'''
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# common Python modules
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import os
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import optparse
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import sys
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import shutil
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import tempfile
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USAGE_STRING = 'Usage: %s input... expectedDir render_app [reander_app_args]'
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HELP_STRING = '''
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Compares the renderings of serialized SkPicture files and directories specified
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by input with the files in expectedDir. Note, files in directoriers are
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expected to end with .skp.
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'''
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def RunCommand(command):
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"""Run a command.
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@param command the command as a single string
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"""
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print 'running command [%s]...' % command
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os.system(command)
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def FindPathToProgram(program):
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"""Return path to an existing program binary, or raise an exception if we
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cannot find one.
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@param program the name of the program that is being looked for
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"""
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trunk_path = os.path.abspath(os.path.join(os.path.dirname(__file__),
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os.pardir))
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possible_paths = [os.path.join(trunk_path, 'out', 'Release', program),
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os.path.join(trunk_path, 'out', 'Debug', program),
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os.path.join(trunk_path, 'out', 'Release',
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program + ".exe"),
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os.path.join(trunk_path, 'out', 'Debug',
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program + ".exe")]
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for try_path in possible_paths:
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if os.path.isfile(try_path):
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return try_path
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raise Exception('cannot find %s in paths %s; maybe you need to '
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'build %s?' % (program, possible_paths, program))
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def RenderSkps(inputs, render_dir, render_app, args):
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"""Renders the serialized SkPictures.
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Uses the render_pictures program to do the rendering.
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@param inputs the location(s) to read the serlialized SkPictures
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@param render_dir the location to write out the rendered images
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"""
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renderer_path = FindPathToProgram(render_app)
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inputs_as_string = " ".join(inputs)
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command = '%s %s %s' % (renderer_path, inputs_as_string, render_dir)
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command += args
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RunCommand(command)
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def DiffRenderings(expected_dir, comparison_dir, diff_dir):
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"""Diffs the rendered SkPicture files with the baseline files.
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Uses the skdiff program to do the diffing.
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@param expected_dir the location of the baseline images.
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@param comparison_dir the location of the images to comapre with the
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baseline
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@param diff_dir the location to write out the diff results
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"""
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skdiff_path = FindPathToProgram('skdiff')
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RunCommand('%s %s %s %s %s' %
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(skdiff_path, expected_dir, comparison_dir, diff_dir,
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'--noprintdirs'))
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def Cleanup(render_dir_option, diff_dir_option, render_dir, diff_dir):
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"""Deletes any temporary folders and files created.
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@param foo_option The OptionParser parsed render_dir or diff_dir vars.
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If these variables are not passed by user we ended up creating
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temporary directories (render_dir, diff_dir) which we will remove.
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@param render_dir the directory where the rendered images were written
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@param diff_dir the directory where the diff results were written
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"""
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if (not render_dir_option):
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if (os.path.isdir(render_dir)):
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shutil.rmtree(render_dir)
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if (not diff_dir_option):
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if (os.path.isdir(diff_dir)):
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shutil.rmtree(diff_dir)
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def TestRenderSkps(inputs, expected_dir, render_dir_option, diff_dir_option,
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render_app, render_args):
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if (render_dir_option):
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render_dir = render_dir_option
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else:
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render_dir = tempfile.mkdtemp()
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if (diff_dir_option):
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diff_dir = diff_dir_option
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else:
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diff_dir = tempfile.mkdtemp()
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try:
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RenderSkps(inputs, render_dir, render_app, render_args)
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DiffRenderings(expected_dir, render_dir, diff_dir)
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finally:
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Cleanup(render_dir_option, diff_dir_option, render_dir, diff_dir)
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