def sprite(map, sprite, offset_x=None, offset_y=None, cache_buster=True):
"""
Returns the image and background position for use in a single shorthand
property
"""
map = map.render()
sprite_maps = _get_cache('sprite_maps')
sprite_map = sprite_maps.get(map)
sprite_name = String.unquoted(sprite).value
sprite = sprite_map and sprite_map.get(sprite_name)
if not sprite_map:
log.error("No sprite map found: %s", map, extra={'stack': True})
elif not sprite:
log.error("No sprite found: %s in %s",
sprite_name,
sprite_map['*n*'],
extra={'stack': True})
if sprite:
url = '%s%s' % (config.ASSETS_URL, sprite_map['*f*'])
if cache_buster:
url += '?_=%s' % sprite_map['*t*']
x = Number(offset_x or 0, 'px')
y = Number(offset_y or 0, 'px')
if not x.value or (x.value <= -1
or x.value >= 1) and not x.is_simple_unit('%'):
x -= Number(sprite[2], 'px')
if not y.value or (y.value <= -1
or y.value >= 1) and not y.is_simple_unit('%'):
y -= Number(sprite[3], 'px')
url = "url(%s)" % escape(url)
return List([String.unquoted(url), x, y])
return List([Number(0), Number(0)])
def sprite_position(map, sprite, offset_x=None, offset_y=None):
"""
Returns the position for the original image in the sprite.
This is suitable for use as a value to background-position.
"""
map = map.render()
sprite_map = sprite_maps.get(map)
sprite_name = String.unquoted(sprite).value
sprite = sprite_map and sprite_map.get(sprite_name)
if not sprite_map:
log.error("No sprite map found: %s", map, extra={'stack': True})
elif not sprite:
log.error("No sprite found: %s in %s", sprite_name, sprite_map['*n*'], extra={'stack': True})
if sprite:
x = None
if offset_x is not None and not isinstance(offset_x, Number):
x = offset_x
if not x or x.value not in ('left', 'right', 'center'):
if x:
offset_x = None
x = Number(offset_x or 0, 'px')
if not x.value or (x.value <= -1 or x.value >= 1) and not x.is_simple_unit('%'):
x -= Number(sprite[2], 'px')
y = None
if offset_y is not None and not isinstance(offset_y, Number):
y = offset_y
if not y or y.value not in ('top', 'bottom', 'center'):
if y:
offset_y = None
y = Number(offset_y or 0, 'px')
if not y.value or (y.value <= -1 or y.value >= 1) and not y.is_simple_unit('%'):
y -= Number(sprite[3], 'px')
return List([x, y])
return List([Number(0), Number(0)])
def sprite(map, sprite, offset_x=None, offset_y=None, cache_buster=True):
"""
Returns the image and background position for use in a single shorthand
property
"""
map = map.render()
sprite_map = sprite_maps.get(map)
sprite_name = String.unquoted(sprite).value
sprite = sprite_map and sprite_map.get(sprite_name)
if not sprite_map:
log.error("No sprite map found: %s", map, extra={'stack': True})
elif not sprite:
log.error("No sprite found: %s in %s", sprite_name, sprite_map['*n*'], extra={'stack': True})
if sprite:
url = '%s%s' % (config.ASSETS_URL, sprite_map['*f*'])
if cache_buster:
url += '?_=%s' % sprite_map['*t*']
x = Number(offset_x or 0, 'px')
y = Number(offset_y or 0, 'px')
if not x.value or (x.value <= -1 or x.value >= 1) and not x.is_simple_unit('%'):
x -= Number(sprite[2], 'px')
if not y.value or (y.value <= -1 or y.value >= 1) and not y.is_simple_unit('%'):
y -= Number(sprite[3], 'px')
url = "url(%s)" % escape(url)
return List([String.unquoted(url), x, y])
return List([Number(0), Number(0)])
def sprite_position(map, sprite, offset_x=None, offset_y=None):
"""
Returns the position for the original image in the sprite.
This is suitable for use as a value to background-position.
"""
map = map.render()
sprite_map = sprite_maps.get(map)
sprite_name = String.unquoted(sprite).value
sprite = sprite_map and sprite_map.get(sprite_name)
if not sprite_map:
log.error("No sprite map found: %s", map, extra={'stack': True})
elif not sprite:
log.error("No sprite found: %s in %s", sprite_name, sprite_map['*n*'], extra={'stack': True})
if sprite:
x = None
if offset_x is not None and not isinstance(offset_x, Number):
x = offset_x
if not x or x.value not in ('left', 'right', 'center'):
if x:
offset_x = None
x = Number(offset_x or 0, 'px')
if not x.value or (x.value <= -1 or x.value >= 1) and not x.is_simple_unit('%'):
x -= Number(sprite[2], 'px')
y = None
if offset_y is not None and not isinstance(offset_y, Number):
y = offset_y
if not y or y.value not in ('top', 'bottom', 'center'):
if y:
offset_y = None
y = Number(offset_y or 0, 'px')
if not y.value or (y.value <= -1 or y.value >= 1) and not y.is_simple_unit('%'):
y -= Number(sprite[3], 'px')
return List([x, y])
return List([Number(0), Number(0)])
def __grad_position(index, default, radial, color_stops):
try:
stops = Number(color_stops[index][0])
if radial and not stops.is_simple_unit('px') and (index == 0 or index == -1 or index == len(color_stops) - 1):
log.warn("Webkit only supports pixels for the start and end stops for radial gradients. Got %s", stops)
except IndexError:
stops = Number(default)
return stops
def __grad_position(index, default, radial, color_stops):
try:
stops = Number(color_stops[index][0])
if radial and not stops.is_simple_unit('px') and (index == 0 or index == -1 or index == len(color_stops) - 1):
log.warn("Webkit only supports pixels for the start and end stops for radial gradients. Got %s", stops)
except IndexError:
stops = Number(default)
return stops
def sprite_map(g, **kwargs):
"""
Generates a sprite map from the files matching the glob pattern.
Uses the keyword-style arguments passed in to control the placement.
$direction - Sprite map layout. Can be `vertical` (default), `horizontal`, `diagonal` or `smart`.
$position - For `horizontal` and `vertical` directions, the position of the sprite. (defaults to `0`)
$<sprite>-position - Position of a given sprite.
$padding, $spacing - Adds paddings to sprites (top, right, bottom, left). (defaults to `0, 0, 0, 0`)
$<sprite>-padding, $<sprite>-spacing - Padding for a given sprite.
$dst-color - Together with `$src-color`, forms a map of source colors to be converted to destiny colors (same index of `$src-color` changed to `$dst-color`).
$<sprite>-dst-color - Destiny colors for a given sprite. (defaults to `$dst-color`)
$src-color - Selects source colors to be converted to the corresponding destiny colors. (defaults to `black`)
$<sprite>-dst-color - Source colors for a given sprite. (defaults to `$src-color`)
$collapse - Collapses every image in the sprite map to a fixed size (`x` and `y`).
$collapse-x - Collapses a size for `x`.
$collapse-y - Collapses a size for `y`.
"""
if not Image:
raise SassMissingDependency('PIL', 'image manipulation')
sprite_maps = _get_cache('sprite_maps')
now_time = time.time()
globs = String(g, quotes=None).value
globs = sorted(g.strip() for g in globs.split(','))
_k_ = ','.join(globs)
files = None
rfiles = None
tfiles = None
map_name = None
if _k_ in sprite_maps:
sprite_maps[_k_]['*'] = now_time
else:
files = []
rfiles = []
tfiles = []
for _glob in globs:
if '..' not in _glob: # Protect against going to prohibited places...
if callable(config.STATIC_ROOT):
_glob_path = _glob
_rfiles = _files = sorted(config.STATIC_ROOT(_glob))
else:
_glob_path = os.path.join(config.STATIC_ROOT, _glob)
_files = glob.glob(_glob_path)
_files = sorted((f, None) for f in _files)
_rfiles = [(rf[len(config.STATIC_ROOT):], s)
for rf, s in _files]
if _files:
files.extend(_files)
rfiles.extend(_rfiles)
base_name = os.path.normpath(
os.path.dirname(_glob)).replace('\\',
'_').replace('/', '_')
_map_name, _, _map_type = base_name.partition('.')
if _map_type:
_map_type += '-'
if not map_name:
map_name = _map_name
tfiles.extend([_map_type] * len(_files))
else:
glob_path = _glob_path
if files is not None:
if not files:
log.error("Nothing found at '%s'", glob_path)
return String.unquoted('')
key = [f for (f, s) in files] + [repr(kwargs), config.ASSETS_URL]
key = map_name + '-' + make_filename_hash(key)
asset_file = key + '.png'
ASSETS_ROOT = _assets_root()
asset_path = os.path.join(ASSETS_ROOT, asset_file)
cache_path = os.path.join(config.CACHE_ROOT or ASSETS_ROOT,
asset_file + '.cache')
inline = Boolean(kwargs.get('inline', False))
sprite_map = None
asset = None
file_asset = None
inline_asset = None
if os.path.exists(asset_path) or inline:
try:
save_time, file_asset, inline_asset, sprite_map, sizes = pickle.load(
open(cache_path))
if file_asset:
sprite_maps[file_asset.render()] = sprite_map
if inline_asset:
sprite_maps[inline_asset.render()] = sprite_map
if inline:
asset = inline_asset
else:
asset = file_asset
except:
pass
if sprite_map:
for file_, storage in files:
_time = getmtime(file_, storage)
if save_time < _time:
if _time > now_time:
log.warning(
"File '%s' has a date in the future (cache ignored)"
% file_)
sprite_map = None # Invalidate cached sprite map
break
if sprite_map is None or asset is None:
cache_buster = Boolean(kwargs.get('cache_buster', True))
direction = String.unquoted(
kwargs.get('direction', config.SPRTE_MAP_DIRECTION)).value
repeat = String.unquoted(kwargs.get('repeat', 'no-repeat')).value
collapse = kwargs.get('collapse', Number(0))
if isinstance(collapse, List):
collapse_x = int(Number(collapse[0]).value)
collapse_y = int(Number(collapse[-1]).value)
else:
collapse_x = collapse_y = int(Number(collapse).value)
if 'collapse_x' in kwargs:
collapse_x = int(Number(kwargs['collapse_x']).value)
if 'collapse_y' in kwargs:
collapse_y = int(Number(kwargs['collapse_y']).value)
position = Number(kwargs.get('position', 0))
if not position.is_simple_unit('%') and position.value > 1:
position = position.value / 100.0
else:
position = position.value
if position < 0:
position = 0.0
elif position > 1:
position = 1.0
padding = kwargs.get('padding', kwargs.get('spacing', Number(0)))
padding = [int(Number(v).value) for v in List.from_maybe(padding)]
padding = (padding * 4)[:4]
dst_colors = kwargs.get('dst_color')
dst_colors = [
list(Color(v).value[:3]) for v in List.from_maybe(dst_colors)
if v
]
src_colors = kwargs.get('src_color', Color.from_name('black'))
src_colors = [
tuple(Color(v).value[:3]) for v in List.from_maybe(src_colors)
]
len_colors = max(len(dst_colors), len(src_colors))
dst_colors = (dst_colors * len_colors)[:len_colors]
src_colors = (src_colors * len_colors)[:len_colors]
def images(f=lambda x: x):
for file_, storage in f(files):
if storage is not None:
_file = storage.open(file_)
else:
_file = file_
_image = Image.open(_file)
yield _image
names = tuple(
os.path.splitext(os.path.basename(file_))[0]
for file_, storage in files)
tnames = tuple(tfiles[i] + n for i, n in enumerate(names))
has_dst_colors = False
all_dst_colors = []
all_src_colors = []
all_positions = []
all_paddings = []
for name in names:
name = name.replace('-', '_')
_position = kwargs.get(name + '_position')
if _position is None:
_position = position
else:
_position = Number(_position)
if not _position.is_simple_unit(
'%') and _position.value > 1:
_position = _position.value / 100.0
else:
_position = _position.value
if _position < 0:
_position = 0.0
elif _position > 1:
_position = 1.0
all_positions.append(_position)
_padding = kwargs.get(name + '_padding',
kwargs.get(name + '_spacing'))
if _padding is None:
_padding = padding
else:
_padding = [
int(Number(v).value) for v in List.from_maybe(_padding)
]
_padding = (_padding * 4)[:4]
all_paddings.append(_padding)
_dst_colors = kwargs.get(name + '_dst_color')
if _dst_colors is None:
_dst_colors = dst_colors
if dst_colors:
has_dst_colors = True
else:
has_dst_colors = True
_dst_colors = [
list(Color(v).value[:3])
for v in List.from_maybe(_dst_colors) if v
]
_src_colors = kwargs.get(name + '_src_color',
Color.from_name('black'))
if _src_colors is None:
_src_colors = src_colors
else:
_src_colors = [
tuple(Color(v).value[:3])
for v in List.from_maybe(_src_colors)
]
_len_colors = max(len(_dst_colors), len(_src_colors))
_dst_colors = (_dst_colors * _len_colors)[:_len_colors]
_src_colors = (_src_colors * _len_colors)[:_len_colors]
all_dst_colors.append(_dst_colors)
all_src_colors.append(_src_colors)
sizes = tuple((collapse_x or i.size[0], collapse_y or i.size[1])
for i in images())
if direction == 'horizontal':
layout = HorizontalSpritesLayout(sizes,
all_paddings,
position=all_positions)
elif direction == 'vertical':
layout = VerticalSpritesLayout(sizes,
all_paddings,
position=all_positions)
elif direction == 'diagonal':
layout = DiagonalSpritesLayout(sizes, all_paddings)
elif direction == 'smart':
layout = PackedSpritesLayout(sizes, all_paddings)
else:
raise Exception("Invalid direction %r" % (direction, ))
layout_positions = list(layout)
new_image = Image.new(mode='RGBA',
size=(layout.width, layout.height),
color=(0, 0, 0, 0))
useless_dst_color = has_dst_colors
offsets_x = []
offsets_y = []
for i, image in enumerate(images()):
x, y, width, height, cssx, cssy, cssw, cssh = layout_positions[
i]
iwidth, iheight = image.size
if has_dst_colors:
pixdata = image.load()
for _y in xrange(iheight):
for _x in xrange(iwidth):
pixel = pixdata[_x, _y]
a = pixel[3] if len(pixel) == 4 else 255
if a:
rgb = pixel[:3]
for j, dst_color in enumerate(
all_dst_colors[i]):
if rgb == all_src_colors[i][j]:
new_color = tuple(
[int(c) for c in dst_color] + [a])
if pixel != new_color:
pixdata[_x, _y] = new_color
useless_dst_color = False
break
if iwidth != width or iheight != height:
cy = 0
while cy < iheight:
cx = 0
while cx < iwidth:
new_image = alpha_composite(
new_image, image, (x, y),
(cx, cy, cx + width, cy + height))
cx += width
cy += height
else:
new_image.paste(image, (x, y))
offsets_x.append(cssx)
offsets_y.append(cssy)
if useless_dst_color:
log.warning(
"Useless use of $dst-color in sprite map for files at '%s' (never used for)"
% glob_path)
filetime = int(now_time)
if not inline:
try:
new_image.save(asset_path)
url = '%s%s' % (config.ASSETS_URL, asset_file)
if cache_buster:
url += '?_=%s' % filetime
except IOError:
log.exception("Error while saving image")
inline = True
if inline:
output = six.BytesIO()
new_image.save(output, format='PNG')
contents = output.getvalue()
output.close()
mime_type = 'image/png'
url = make_data_url(mime_type, contents)
url = 'url(%s)' % escape(url)
if inline:
asset = inline_asset = List(
[String.unquoted(url),
String.unquoted(repeat)])
else:
asset = file_asset = List(
[String.unquoted(url),
String.unquoted(repeat)])
# Add the new object:
sprite_map = dict(
zip(tnames, zip(sizes, rfiles, offsets_x, offsets_y)))
sprite_map['*'] = now_time
sprite_map['*f*'] = asset_file
sprite_map['*k*'] = key
sprite_map['*n*'] = map_name
sprite_map['*t*'] = filetime
sizes = zip(files, sizes)
cache_tmp = tempfile.NamedTemporaryFile(delete=False,
dir=ASSETS_ROOT)
pickle.dump(
(now_time, file_asset, inline_asset, sprite_map, sizes),
cache_tmp)
cache_tmp.close()
if sys.platform == 'win32' and os.path.isfile(cache_path):
# on windows, cannot rename a file to a path that matches
# an existing file, we have to remove it first
os.remove(cache_path)
os.rename(cache_tmp.name, cache_path)
# Use the sorted list to remove older elements (keep only 500 objects):
if len(sprite_maps) > MAX_SPRITE_MAPS:
for a in sorted(sprite_maps,
key=lambda a: sprite_maps[a]['*'],
reverse=True)[KEEP_SPRITE_MAPS:]:
del sprite_maps[a]
log.warning("Exceeded maximum number of sprite maps (%s)" %
MAX_SPRITE_MAPS)
sprite_maps[asset.render()] = sprite_map
image_size_cache = _get_cache('image_size_cache')
for file_, size in sizes:
image_size_cache[file_] = size
# TODO this sometimes returns an empty list, or is never assigned to
return asset
def sprite_map(g, **kwargs):
"""
Generates a sprite map from the files matching the glob pattern.
Uses the keyword-style arguments passed in to control the placement.
$direction - Sprite map layout. Can be `vertical` (default), `horizontal`, `diagonal` or `smart`.
$position - For `horizontal` and `vertical` directions, the position of the sprite. (defaults to `0`)
$<sprite>-position - Position of a given sprite.
$padding, $spacing - Adds paddings to sprites (top, right, bottom, left). (defaults to `0, 0, 0, 0`)
$<sprite>-padding, $<sprite>-spacing - Padding for a given sprite.
$dst-color - Together with `$src-color`, forms a map of source colors to be converted to destiny colors (same index of `$src-color` changed to `$dst-color`).
$<sprite>-dst-color - Destiny colors for a given sprite. (defaults to `$dst-color`)
$src-color - Selects source colors to be converted to the corresponding destiny colors. (defaults to `black`)
$<sprite>-dst-color - Source colors for a given sprite. (defaults to `$src-color`)
$collapse - Collapses every image in the sprite map to a fixed size (`x` and `y`).
$collapse-x - Collapses a size for `x`.
$collapse-y - Collapses a size for `y`.
"""
if not Image:
raise Exception("Images manipulation require PIL")
now_time = time.time()
g = String(g, quotes=None).value
if g in sprite_maps:
sprite_maps[glob]['*'] = now_time
elif '..' not in g: # Protect against going to prohibited places...
if callable(config.STATIC_ROOT):
glob_path = g
rfiles = files = sorted(config.STATIC_ROOT(g))
else:
glob_path = os.path.join(config.STATIC_ROOT, g)
files = glob.glob(glob_path)
files = sorted((f, None) for f in files)
rfiles = [(rf[len(config.STATIC_ROOT):], s) for rf, s in files]
if not files:
log.error("Nothing found at '%s'", glob_path)
return String.unquoted('')
map_name = os.path.normpath(os.path.dirname(g)).replace('\\', '_').replace('/', '_')
key = [f for (f, s) in files] + [repr(kwargs), config.ASSETS_URL]
key = map_name + '-' + make_filename_hash(key)
asset_file = key + '.png'
ASSETS_ROOT = config.ASSETS_ROOT or os.path.join(config.STATIC_ROOT, 'assets')
asset_path = os.path.join(ASSETS_ROOT, asset_file)
cache_path = os.path.join(config.CACHE_ROOT or ASSETS_ROOT, asset_file + '.cache')
inline = Boolean(kwargs.get('inline', False))
sprite_map = None
asset = None
file_asset = None
inline_asset = None
if os.path.exists(asset_path) or inline:
try:
save_time, file_asset, inline_asset, sprite_map, sizes = pickle.load(open(cache_path))
if file_asset:
sprite_maps[file_asset.render()] = sprite_map
if inline_asset:
sprite_maps[inline_asset.render()] = sprite_map
if inline:
asset = inline_asset
else:
asset = file_asset
except:
pass
if sprite_map:
for file_, storage in files:
_time = getmtime(file_, storage)
if save_time < _time:
if _time > now_time:
log.warning("File '%s' has a date in the future (cache ignored)" % file_)
sprite_map = None # Invalidate cached sprite map
break
if sprite_map is None or asset is None:
cache_buster = Boolean(kwargs.get('cache_buster', True))
direction = String.unquoted(kwargs.get('direction', config.SPRTE_MAP_DIRECTION)).value
repeat = String.unquoted(kwargs.get('repeat', 'no-repeat')).value
collapse = kwargs.get('collapse', Number(0))
if isinstance(collapse, List):
collapse_x = int(Number(collapse[0]).value)
collapse_y = int(Number(collapse[-1]).value)
else:
collapse_x = collapse_y = int(Number(collapse).value)
if 'collapse_x' in kwargs:
collapse_x = int(Number(kwargs['collapse_x']).value)
if 'collapse_y' in kwargs:
collapse_y = int(Number(kwargs['collapse_y']).value)
position = Number(kwargs.get('position', 0))
if not position.is_simple_unit('%') and position.value > 1:
position = position.value / 100.0
else:
position = position.value
if position < 0:
position = 0.0
elif position > 1:
position = 1.0
padding = kwargs.get('padding', kwargs.get('spacing', Number(0)))
padding = [int(Number(v).value) for v in List.from_maybe(padding)]
padding = (padding * 4)[:4]
dst_colors = kwargs.get('dst_color')
dst_colors = [list(Color(v).value[:3]) for v in List.from_maybe(dst_colors) if v]
src_colors = kwargs.get('src_color', Color.from_name('black'))
src_colors = [tuple(Color(v).value[:3]) for v in List.from_maybe(src_colors)]
len_colors = max(len(dst_colors), len(src_colors))
dst_colors = (dst_colors * len_colors)[:len_colors]
src_colors = (src_colors * len_colors)[:len_colors]
def images(f=lambda x: x):
for file_, storage in f(files):
if storage is not None:
_file = storage.open(file_)
else:
_file = file_
_image = Image.open(_file)
yield _image
names = tuple(os.path.splitext(os.path.basename(file_))[0] for file_, storage in files)
has_dst_colors = False
all_dst_colors = []
all_src_colors = []
all_positions = []
all_paddings = []
for name in names:
name = name.replace('-', '_')
_position = kwargs.get(name + '_position')
if _position is None:
_position = position
else:
_position = Number(_position)
if not _position.is_simple_unit('%') and _position.value > 1:
_position = _position.value / 100.0
else:
_position = _position.value
if _position < 0:
_position = 0.0
elif _position > 1:
_position = 1.0
all_positions.append(_position)
_padding = kwargs.get(name + '_padding', kwargs.get(name + '_spacing'))
if _padding is None:
_padding = padding
else:
_padding = [int(Number(v).value) for v in List.from_maybe(_padding)]
_padding = (_padding * 4)[:4]
all_paddings.append(_padding)
_dst_colors = kwargs.get(name + '_dst_color')
if _dst_colors is None:
_dst_colors = dst_colors
if dst_colors:
has_dst_colors = True
else:
has_dst_colors = True
_dst_colors = [list(Color(v).value[:3]) for v in List.from_maybe(_dst_colors) if v]
_src_colors = kwargs.get(name + '_src_color', Color.from_name('black'))
if _src_colors is None:
_src_colors = src_colors
else:
_src_colors = [tuple(Color(v).value[:3]) for v in List.from_maybe(_src_colors)]
_len_colors = max(len(_dst_colors), len(_src_colors))
_dst_colors = (_dst_colors * _len_colors)[:_len_colors]
_src_colors = (_src_colors * _len_colors)[:_len_colors]
all_dst_colors.append(_dst_colors)
all_src_colors.append(_src_colors)
sizes = tuple((collapse_x or i.size[0], collapse_y or i.size[1]) for i in images())
if direction == 'horizontal':
layout = HorizontalSpritesLayout(sizes, all_paddings, position=all_positions)
elif direction == 'vertical':
layout = VerticalSpritesLayout(sizes, all_paddings, position=all_positions)
elif direction == 'diagonal':
layout = DiagonalSpritesLayout(sizes, all_paddings)
elif direction == 'smart':
layout = PackedSpritesLayout(sizes, all_paddings)
else:
raise Exception("Invalid direction %r" % (direction,))
layout_positions = list(layout)
new_image = Image.new(
mode='RGBA',
size=(layout.width, layout.height),
color=(0, 0, 0, 0)
)
useless_dst_color = has_dst_colors
offsets_x = []
offsets_y = []
for i, image in enumerate(images()):
x, y, width, height, cssx, cssy, cssw, cssh = layout_positions[i]
iwidth, iheight = image.size
if has_dst_colors:
pixdata = image.load()
for _y in xrange(iheight):
for _x in xrange(iwidth):
pixel = pixdata[_x, _y]
a = pixel[3] if len(pixel) == 4 else 255
if a:
rgb = pixel[:3]
for j, dst_color in enumerate(all_dst_colors[i]):
if rgb == all_src_colors[i][j]:
new_color = tuple([int(c) for c in dst_color] + [a])
if pixel != new_color:
pixdata[_x, _y] = new_color
useless_dst_color = False
break
if iwidth != width or iheight != height:
cy = 0
while cy < iheight:
cx = 0
while cx < iwidth:
new_image = alpha_composite(new_image, image, (x, y), (cx, cy, cx + width, cy + height))
cx += width
cy += height
else:
new_image.paste(image, (x, y))
offsets_x.append(cssx)
offsets_y.append(cssy)
if useless_dst_color:
log.warning("Useless use of $dst-color in sprite map for files at '%s' (never used for)" % glob_path)
filetime = int(now_time)
if not inline:
try:
new_image.save(asset_path)
url = '%s%s' % (config.ASSETS_URL, asset_file)
if cache_buster:
url += '?_=%s' % filetime
except IOError:
log.exception("Error while saving image")
inline = True
if inline:
output = six.BytesIO()
new_image.save(output, format='PNG')
contents = output.getvalue()
output.close()
mime_type = 'image/png'
url = make_data_url(mime_type, contents)
url = 'url(%s)' % escape(url)
if inline:
asset = inline_asset = List([String.unquoted(url), String.unquoted(repeat)])
else:
asset = file_asset = List([String.unquoted(url), String.unquoted(repeat)])
# Add the new object:
sprite_map = dict(zip(names, zip(sizes, rfiles, offsets_x, offsets_y)))
sprite_map['*'] = now_time
sprite_map['*f*'] = asset_file
sprite_map['*k*'] = key
sprite_map['*n*'] = map_name
sprite_map['*t*'] = filetime
sizes = zip(files, sizes)
cache_tmp = tempfile.NamedTemporaryFile(delete=False, dir=ASSETS_ROOT)
pickle.dump((now_time, file_asset, inline_asset, sprite_map, sizes), cache_tmp)
cache_tmp.close()
os.rename(cache_tmp.name, cache_path)
# Use the sorted list to remove older elements (keep only 500 objects):
if len(sprite_maps) > MAX_SPRITE_MAPS:
for a in sorted(sprite_maps, key=lambda a: sprite_maps[a]['*'], reverse=True)[KEEP_SPRITE_MAPS:]:
del sprite_maps[a]
log.warning("Exceeded maximum number of sprite maps (%s)" % MAX_SPRITE_MAPS)
sprite_maps[asset.render()] = sprite_map
for file_, size in sizes:
_image_size_cache[file_] = size
# TODO this sometimes returns an empty list, or is never assigned to
return asset
