def make_bundle(self, versioner):
import Image # If this fails, you need the Python Imaging Library.
boxes = [ImageBox(Image.open(path), path) for path in self.get_paths()]
# Pick a max_width so that the sprite is squarish and a multiple of 16,
# and so no image is too wide to fit.
total_area = sum(box.width * box.height for box in boxes)
width = max(max(box.width for box in boxes), (int(math.sqrt(total_area)) // 16 + 1) * 16)
(_, height, packing) = pack_boxes(boxes, width)
sprite = Image.new("RGBA", (width, height))
for (left, top, box) in packing:
# This is a bit of magic to make the transparencies work. To
# preserve transparency, we pass the image so it can take its
# alpha channel mask or something. However, if the image has no
# alpha channels, then it fails, we we have to check if the
# image is RGBA here.
img = box.image
mask = img if img.mode == "RGBA" else None
sprite.paste(img, (left, top), mask)
sprite.save(self.get_bundle_path(), "PNG")
self._optimize_output()
# It's *REALLY* important that this happen here instead of after the
# generate_css() call, because if we waited, the CSS woudl have the URL
# of the last version of this bundle.
if versioner:
versioner.update_bundle_version(self)
self.generate_css(packing)
def make_bundle(self, versioner):
import Image # If this fails, you need the Python Imaging Library.
boxes = [ImageBox(Image.open(path), path) for path in self.get_paths()]
# Pick a max_width so that the sprite is squarish and a multiple of 16,
# and so no image is too wide to fit.
total_area = sum(box.width * box.height for box in boxes)
width = max(max(box.width for box in boxes),
(int(math.sqrt(total_area)) // 16 + 1) * 16)
(_, height, packing) = pack_boxes(boxes, width)
sprite = Image.new("RGBA", (width, height))
for (left, top, box) in packing:
# This is a bit of magic to make the transparencies work. To
# preserve transparency, we pass the image so it can take its
# alpha channel mask or something. However, if the image has no
# alpha channels, then it fails, we we have to check if the
# image is RGBA here.
img = box.image
mask = img if img.mode == "RGBA" else None
sprite.paste(img, (left, top), mask)
sprite.save(self.get_bundle_path(), "PNG")
self._optimize_output()
# It's *REALLY* important that this happen here instead of after the
# generate_css() call, because if we waited, the CSS woudl have the URL
# of the last version of this bundle.
if versioner:
versioner.update_bundle_version(self)
self.generate_css(packing)
def make_bundle(self):
import Image # If this fails, you need the Python Imaging Library.
boxes = [ImageBox(Image.open(path), path) for path in self.get_paths()]
# Pick a max_width so that the sprite is squarish and a multiple of 16,
# and so no image is too wide to fit.
total_area = sum(box.width * box.height for box in boxes)
width = max(max(box.width for box in boxes),
(int(math.sqrt(total_area)) // 16 + 1) * 16)
(_, height, packing) = pack_boxes(boxes, width)
sprite = Image.new("RGBA", (width, height))
with open(self.css_file, "w") as css:
css.write("/* Generated classes for django-media-bundler sprites. "
"Don't edit! */\n")
props = {
"background-image": "url('%s')" % self.get_bundle_url(),
}
css.write(self.make_css(None, props))
for (left, top, box) in packing:
# This is a bit of magic to make the transparencies work. To
# preserve transparency, we pass the image so it can take its
# alpha channel mask or something. However, if the image has no
# alpha channels, then it fails, we we have to check if the
# image is RGBA here.
img = box.image
mask = img if img.mode == "RGBA" else None
sprite.paste(img, (left, top), mask)
props = {
"background-position": "%dpx %dpx" % (-left, -top),
"width": "%dpx" % box.width,
"height": "%dpx" % box.height,
}
css.write(self.make_css(os.path.basename(box.filename), props))
sprite.save(self.get_bundle_path(), "PNG")
self._optimize_output()
def make_bundle(self):
import Image # If this fails, you need the Python Imaging Library.
boxes = [ImageBox(Image.open(path), path) for path in self.get_paths()]
# Pick a max_width so that the sprite is squarish and a multiple of 16,
# and so no image is too wide to fit.
total_area = sum(box.width * box.height for box in boxes)
width = max(max(box.width for box in boxes),
(int(math.sqrt(total_area)) // 16 + 1) * 16)
(_, height, packing) = pack_boxes(boxes, width)
sprite = Image.new("RGBA", (width, height))
with open(self.css_file, "w") as css:
css.write(
"/* Generated classes for django-media-bundler sprites. "
"Don't edit! */\n")
props = {
"background-image": "url('%s')" % self.get_bundle_url(),
}
css.write(self.make_css(None, props))
for (left, top, box) in packing:
# This is a bit of magic to make the transparencies work. To
# preserve transparency, we pass the image so it can take its
# alpha channel mask or something. However, if the image has no
# alpha channels, then it fails, we we have to check if the
# image is RGBA here.
img = box.image
mask = img if img.mode == "RGBA" else None
sprite.paste(img, (left, top), mask)
props = {
"background-position": "%dpx %dpx" % (-left, -top),
"width": "%dpx" % box.width,
"height": "%dpx" % box.height,
}
css.write(self.make_css(os.path.basename(box.filename), props))
sprite.save(self.get_bundle_path(), "PNG")
self._optimize_output()
