easy_thumbnails.engine: 58 total statements, 0.0% covered

Generated: Wed 2013-03-13 10:33 CET

Source file: /media/Envs/Envs/filer-gallery/lib/python2.7/site-packages/easy_thumbnails/engine.py

Stats: 0 executed, 51 missed, 7 excluded, 32 ignored

1. import os
2. try:
3. from cStringIO import StringIO
4. except ImportError:
5. from StringIO import StringIO
7. try:
8. from PIL import Image
9. except ImportError:
10. import Image
12. from easy_thumbnails import utils
13. from easy_thumbnails.conf import settings
16. def _use_default_options(options):
17. if not settings.THUMBNAIL_DEFAULT_OPTIONS:
18. return options
19. default_options = settings.THUMBNAIL_DEFAULT_OPTIONS.copy()
20. default_options.update(options)
21. return default_options
24. def process_image(source, processor_options, processors=None):
25. """
26. Process a source PIL image through a series of image processors, returning
27. the (potentially) altered image.
28. """
29. processor_options = _use_default_options(processor_options)
30. if processors is None:
31. processors = [utils.dynamic_import(name)
32. for name in settings.THUMBNAIL_PROCESSORS]
33. image = source
34. for processor in processors:
35. image = processor(image, **processor_options)
36. return image
39. def save_image(image, destination=None, filename=None, **options):
40. """
41. Save a PIL image.
42. """
43. if destination is None:
44. destination = StringIO()
45. filename = filename or ''
46. format = Image.EXTENSION.get(os.path.splitext(filename)[1], 'JPEG')
47. if format == 'JPEG':
48. options.setdefault('quality', 85)
49. try:
50. image.save(destination, format=format, optimize=1, **options)
51. except IOError:
52. # Try again, without optimization (PIL can't optimize an image
53. # larger than ImageFile.MAXBLOCK, which is 64k by default)
54. pass
55. image.save(destination, format=format, **options)
56. if hasattr(destination, 'seek'):
57. destination.seek(0)
58. return destination
61. def generate_source_image(source_file, processor_options, generators=None):
62. """
63. Processes a source ``File`` through a series of source generators, stopping
64. once a generator returns an image.
66. The return value is this image instance or ``None`` if no generators
67. return an image.
69. If the source file cannot be opened, it will be set to ``None`` and still
70. passed to the generators.
71. """
72. processor_options = _use_default_options(processor_options)
73. was_closed = source_file.closed
74. if generators is None:
75. generators = [utils.dynamic_import(name)
76. for name in settings.THUMBNAIL_SOURCE_GENERATORS]
77. try:
78. source = source_file
79. try:
80. source.open()
81. except Exception:
82. source = None
83. was_closed = False
84. for generator in generators:
85. image = generator(source, **processor_options)
86. if image:
87. return image
88. finally:
89. if was_closed:
90. source_file.close()