def img(src, width=None, height=None, method=PROPORTIONAL, alt="", **attrs):
"""Renders an image tag."""
params = {
"alt": alt,
"attrs": attrs,
}
try:
thumbnail = default_thumbnail_cache.get_thumbnail(
src,
width = width,
height = height,
method = method,
)
except ThumbnailError:
asset = AdaptiveAsset(src)
params.update({
"url": asset.get_url(),
"width": width or "",
"height": height or "",
})
else:
params.update({
"url": thumbnail.url,
"width": thumbnail.width,
"height": thumbnail.height,
})
return params
def img(src, width=None, height=None, method=PROPORTIONAL, alt="", **attrs):
"""Renders an image tag."""
params = {
"alt": alt,
"attrs": attrs,
}
try:
thumbnail = default_thumbnail_cache.get_thumbnail(
src,
width=width,
height=height,
method=method,
)
except ThumbnailError:
asset = AdaptiveAsset(src)
params.update({
"url": asset.get_url(),
"width": width or "",
"height": height or "",
})
else:
params.update({
"url": thumbnail.url,
"width": thumbnail.width,
"height": thumbnail.height,
})
return params
def video_img(src, width, height, method=VIDEO_PROPORTIONAL, alt="", **attrs):
"""Renders an image tag from the given video."""
params = {
"alt": alt,
"attrs": attrs,
"width": width,
"height": height,
}
try:
url = default_video_cache.get_url(src, width, height, method, format=JPEG_FORMAT)
except VideoError:
asset = AdaptiveAsset(src)
url = asset.get_url()
params["url"] = url
return params
def video_img(src, width, height, method=VIDEO_PROPORTIONAL, alt="", **attrs):
"""Renders an image tag from the given video."""
params = {
"alt": alt,
"attrs": attrs,
"width": width,
"height": height,
}
try:
url = default_video_cache.get_url(src,
width,
height,
method,
format=JPEG_FORMAT)
except VideoError:
asset = AdaptiveAsset(src)
url = asset.get_url()
params["url"] = url
return params
def responsive_img(src, method=PROPORTIONAL, alt="", **attrs):
"""Renders an image tag."""
output = {
"sizes": [],
"alt": alt,
"attrs": attrs,
}
for size in settings.RESPONSIVE_IMAGES_SIZES:
params = {}
try:
thumbnail = default_thumbnail_cache.get_thumbnail(
src,
width=size['width'],
height=size['height'],
method=method,
)
except ThumbnailError:
asset = AdaptiveAsset(src)
params.update({
"url": asset.get_url(),
"width": size['width'] or "",
"height": size['height'] or "",
})
else:
params.update({
"url": thumbnail.url,
"width": thumbnail.width,
"height": thumbnail.height,
})
output['sizes'].append(params)
return output
def get_thumbnail(self,
asset,
width=None,
height=None,
method=PROPORTIONAL):
"""
Returns a thumbnail of the given size.
Either or both of width and height may be None, in which case the
image's original size will be used.
"""
# Lookup the method.
try:
method = _methods[method]
except KeyError:
raise ValueError(
"{method} is not a valid thumbnail method. Should be one of {methods}."
.format(method=method, methods=", ".join(_methods.keys())))
# Adapt the asset.
asset = AdaptiveAsset(asset)
# Create the thumbnail.
return Thumbnail(self._asset_cache,
ThumbnailAsset(asset, width, height, method))
def _get_video_asset(self, asset, width=None, height=None, method=PAD, format=MP4_FORMAT, offset=None):
"""
Returns a processed video from the given video.
"""
# Lookup the method.
try:
method = _methods[method]
except KeyError:
raise ValueError("{method} is not a valid video method. Should be one of {methods}.".format(
method = method,
methods = ", ".join(_methods.keys())
))
# Lookup the format.
try:
format = _formats[format]
except KeyError:
raise ValueError("{format} is not a valid video format. Should be one of {formats}.".format(
format = format,
formats = ", ".join(_formats.keys())
))
# Adapt the asset.
asset = AdaptiveAsset(asset)
# Create the video.
return VideoAsset(asset, width, height, method, format, offset)
