Issue 3532 - Stop generating animation images at build time

imageCompression.py

-# coding: utf-8
-
-# This Source Code Form is subject to the terms of the Mozilla Public
-# License, v. 2.0. If a copy of the MPL was not distributed with this
-# file, You can obtain one at http://mozilla.org/MPL/2.0/.
-
-import os
-import subprocess
-import threading
-import errno
-import logging
-from StringIO import StringIO
-
-try:
-  from PIL import Image
-except ImportError:
-  import Image
-
-use_pngout = True
-
-class Pngout:
-  def __init__(self, image):
-    args = ['pngout', '-', '-', '-q']
-
-    # Preserve mode for grayscale images. pngout tends to convert
-    # everyting to palette. However, the toolbar icons for Safari
-    # require the grayscale+alpha mode. Moreover, pngout seems to
-    # generate smaller files when forced to preserve grayscale mode.
-    if image.mode == 'LA' and any(px < 0xff for px in image.split()[1].getdata()):
-      args.append('-c4')  # grayscale+alpha
-    elif Image.getmodebase(image.mode) == 'L':
-      args.append('-c0')  # grayscale
-
-    self._pngout = subprocess.Popen(args, stdin=subprocess.PIPE, stdout=subprocess.PIPE)
-
-    # Writing will block when the buffer is full until we read more data
-    # from the output. Reading the output will block when the input isn't
-    # complete yet. So we have to use threads to do both at the same time.
-    self._thread = threading.Thread(target=self._run_thread, args=(image,))
-    self._thread.daemon = True
-    self._thread.start()
-
-  # This is supposed to be a file-like object, reading the compressed PNG file.
-  # So proxy methods like read() to the stdout of the underlying subprocess.
-  def __getattr__(self, name):
-    return getattr(self._pngout.stdout, name)
-
-  def _run_thread(self, image):
-    image.save(self._pngout.stdin, 'PNG')
-    self._pngout.stdin.close()
-
-  def close(self):
-    self._thread.join()
-    self._pngout.stdout.close()
-    self._pngout.wait()
-
-class ImageCompressor:
-  use_pngout = True
-
-  def make_uncompressed_file(self, image, filename):
-    file = StringIO()
-    file.name = filename  # Set the 'name' attribute, so that PIL can determine
-                          # the correct image type based on the file extension
-    image.save(file)
-    file.seek(0)
-
-    return file
-
-  def make_file(self, image, filename):
-    if self.use_pngout and os.path.splitext(filename)[1].lower() == '.png':
-      try:
-        return Pngout(image)
-      except OSError, e:
-        if e.errno != errno.ENOENT:
-          raise
-
-        logging.warning("Couldn't find 'pngout', can't compress images")
-        self.use_pngout = False
-
-    return self.make_uncompressed_file(image, filename)
-
-image_to_file = ImageCompressor().make_file