third_party/WebKit/Source/devtools/scripts/convert_svg_images_to_png.py

   1 #!/usr/bin/env python
   2 # Copyright (c) 2014 Google Inc. All rights reserved.
   3 #
   4 # Redistribution and use in source and binary forms, with or without
   5 # modification, are permitted provided that the following conditions are
   6 # met:
   7 #
   8 #     * Redistributions of source code must retain the above copyright
   9 # notice, this list of conditions and the following disclaimer.
  10 #     * Redistributions in binary form must reproduce the above
  11 # copyright notice, this list of conditions and the following disclaimer
  12 # in the documentation and/or other materials provided with the
  13 # distribution.
  14 #     * Neither the name of Google Inc. nor the names of its
  15 # contributors may be used to endorse or promote products derived from
  16 # this software without specific prior written permission.
  17 #
  18 # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  19 # "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  20 # LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  21 # A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  22 # OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  23 # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  24 # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  25 # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  26 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  27 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  28 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  29
  30 import devtools_file_hashes
  31 import hashlib
  32 import os
  33 import os.path
  34 import re
  35 import subprocess
  36 import sys
  37
  38 try:
  39     import json
  40 except ImportError:
  41     import simplejson as json
  42
  43
  44 def check_installed(app_name):
  45     proc = subprocess.Popen("which %s" % app_name, stdout=subprocess.PIPE, shell=True)
  46     proc.communicate()
  47     if proc.returncode != 0:
  48         print "This script needs \"%s\" to be installed." % app_name
  49         sys.exit(1)
  50
  51
  52 check_installed("inkscape")
  53
  54 scripts_path = os.path.dirname(os.path.abspath(__file__))
  55 devtools_path = os.path.dirname(scripts_path)
  56 devtools_frontend_path = devtools_path + "/front_end"
  57 images_path = devtools_frontend_path + "/Images"
  58 image_sources_path = images_path + "/src"
  59 hashes_file_name = "svg2png.hashes"
  60 hashes_file_path = image_sources_path + "/" + hashes_file_name
  61
  62 file_names = os.listdir(image_sources_path)
  63 svg_file_paths = [image_sources_path + "/" + file_name for file_name in file_names if file_name.endswith(".svg")]
  64
  65 svg_file_paths_to_convert = devtools_file_hashes.files_with_invalid_hashes(hashes_file_path, svg_file_paths)
  66 svg_file_names = [re.sub(".svg$", "", re.sub(".*/", "", file_path)) for file_path in svg_file_paths_to_convert]
  67
  68
  69 def convert_svg_to_png(svg_file_name, png_file_name, dpi):
  70     svg_full_path = image_sources_path + "/" + svg_file_name + ".svg"
  71     png_full_path = images_path + "/" + png_file_name + ".png"
  72     convert_command = "inkscape -f %s -e %s -d %s" % (svg_full_path, png_full_path, dpi)
  73     proc = subprocess.Popen(convert_command, stdout=subprocess.PIPE, stderr=subprocess.STDOUT, shell=True)
  74     return proc
  75
  76 processes = {}
  77 for file_name in svg_file_names:
  78     name = re.sub(".svg$", "", file_name)
  79     name2x = name + "_2x"
  80     processes[name] = convert_svg_to_png(name, name, 90)
  81     processes[name2x] = convert_svg_to_png(name, name2x, 180)
  82
  83 for file_name, proc in processes.items():
  84     (convert_out, _) = proc.communicate()
  85     print("Conversion of %s finished: %s" % (file_name, convert_out))
  86
  87 devtools_file_hashes.update_file_hashes(hashes_file_path, svg_file_paths)