def test_size_order_bug(self):
img_path = self.create_unique_image('size-order-bug.png')
crop = Crop(Box(x1=160, y1=0, x2=800, y2=640), img_path)
size = Size('650', w=650, min_h=250)
new_crop = size.fit_to_crop(crop)
self.assertGreaterEqual(new_crop.box.w, 650,
"Calculated best fit (%d) didn't get required width (650)" % new_crop.box.w)
def test_off_by_one_bug(self):
img_path = self.create_unique_image('best-fit-off-by-one-bug.png')
crop = Crop(Box(x1=0, y1=0, x2=960, y2=915), img_path)
size = Size('960', w=960, h=594)
new_crop = size.fit_to_crop(crop)
self.assertNotEqual(new_crop.box.h, 593, "Calculated best fit height is 1 pixel too short")
self.assertEqual(new_crop.box.h, 594)
def test_size_order_bug(self):
img_path = os.path.join(self.TEST_IMG_DIR, 'size-order-bug.png')
crop = Crop(Box(x1=160, y1=0, x2=800, y2=640), img_path)
size = Size('650', w=650, min_h=250)
new_crop = size.fit_to_crop(crop)
self.assertGreaterEqual(new_crop.box.w, 650,
"Calculated best fit (%d) didn't get required width (650)" % new_crop.box.w)
def test_off_by_one_bug(self):
img_path = os.path.join(self.TEST_IMG_DIR, 'best-fit-off-by-one-bug.png')
crop = Crop(Box(x1=0, y1=0, x2=960, y2=915), img_path)
size = Size('960', w=960, h=594)
new_crop = size.fit_to_crop(crop)
self.assertNotEqual(new_crop.box.h, 593, "Calculated best fit height is 1 pixel too short")
self.assertEqual(new_crop.box.h, 594)
def crop_size(self):
from cropduster.resizing import Size
size_json = self.get('size', {}).get('json') or None
if size_json:
return size_json
size_w = self.get('size', {}).get('w') or None
size_h = self.get('size', {}).get('h') or None
if not size_w and not size_h:
return None
return Size('crop', w=size_w, h=size_h)
def object_hook(dct):
if dct.get('__type__') in ['Size', 'cropduster.resizing.Size']:
return Size(name=dct.get('name'),
label=dct.get('label'),
w=dct.get('w'),
h=dct.get('h'),
min_w=dct.get('min_w'),
min_h=dct.get('min_h'),
max_w=dct.get('max_w'),
max_h=dct.get('max_h'),
retina=dct.get('retina'),
auto=dct.get('auto'),
required=dct.get('required'))
return dct
def test_get_min_size(self):
from cropduster.utils import get_min_size
from cropduster.resizing import Size
sizes = [
Size('a', w=200, h=200),
Size('b', w=100, h=300),
Size('c', w=20, h=20)
]
self.assertEqual(get_min_size(sizes), (200, 300))
sizes = [
Size('a', min_w=200, min_h=200, max_h=500),
Size('b', min_w=100, min_h=300),
Size('c', w=20, h=20)
]
self.assertEqual(get_min_size(sizes), (200, 300))
def get_crop(image, crop_name, exact_size=False, **kwargs):
"""
Get the crop of an image. Usage:
{% get_crop article.image 'square_thumbnail' attribution=1 exact_size=1 as img %}
will assign to `img` a dictionary that looks like:
{
"url": '/media/path/to/my.jpg',
"width": 150,
"height" 150,
"attribution": 'Stock Photoz',
"attribution_link": 'http://stockphotoz.com',
"caption": 'Woman laughing alone with salad.',
}
For use in an image tag or style block like:
<img src="{{ img.url }}">
The `size` kwarg is deprecated.
Omitting the `attribution` kwarg will omit the attribution, attribution_link,
and caption.
Omitting the `exact_size` kwarg will return the width and/or the height of
the crop size that was passed in. Crop sizes do not always require both
values so `exact_size` gives you access to the actual size of an image.
"""
if not image:
return
if "size" in kwargs:
warnings.warn("The size kwarg is deprecated.", DeprecationWarning)
data = {}
data['url'] = getattr(Image.get_file_for_size(image, crop_name), 'url', None)
if not exact_size:
sizes = Size.flatten(image.sizes)
try:
size = six.next(size_obj for size_obj in sizes if size_obj.name == crop_name)
except StopIteration:
pass
else:
if size.width:
data['width'] = size.width
if size.height:
data['height'] = size.height
elif image.related_object:
thumbs = {thumb.name: thumb for thumb in image.related_object.thumbs.all()}
try:
thumb = thumbs[crop_name]
except KeyError:
if crop_name == "original":
thumb = image.related_object
else:
return None
cache_buster = base64.b32encode(str(time.mktime(thumb.date_modified.timetuple())))
data.update({
"url": "%s?%s" % (data["url"], cache_buster),
"width": thumb.width,
"height": thumb.height,
"attribution": image.related_object.attribution,
"attribution_link": image.related_object.attribution_link,
"caption": image.related_object.caption,
})
return data
