def init_info(self, info):
if info is self.info:
return
fallback, fallback_active = self.default_icon_path()
if info.favicon:
thumb_path = info.favicon
else:
thumb_path = fallback
# we don't use the ImagePool because 'favicon.ico' is a name with too
# many hits (#16573).
try:
image = widgetset.Image(thumb_path)
if image.width > 16 or image.height > 16:
image = imagepool.resize_image(image, 16, 16)
info.icon = widgetset.ImageSurface(image)
if not info.favicon:
info.active_icon = imagepool.get_surface(fallback_active,
size=(16, 16))
except ValueError:
# 16842 - if we ever get sent an invalid icon - don't crash with
# ValueError.
info.icon = imagepool.get_surface(fallback, size=(16, 16))
info.active_icon = imagepool.get_surface(fallback_active,
size=(16, 16))
info.unwatched = info.available = 0
info.type = self.type
class ImagePool(util.Cache):
def create_new_value(self, (path, size)):
try:
image = widgetset.Image(path)
except StandardError:
logging.warn("error loading image %s:\n%s", path,
traceback.format_exc())
image = broken_image
if size is not None:
image = resize_image(image, *size)
return image
"""``miro.frontends.widgets.imagepool`` -- Get Image objects for image
filenames.
imagepool handles creating Image and ImageSurface objects for image
filenames. It caches Image/ImageSurface objecsts so to avoid re-creating
them.
"""
import logging
import traceback
from miro import util
from miro.plat import resources
from miro.plat.frontends.widgets import widgetset
broken_image = widgetset.Image(resources.path('images/broken-image.gif'))
CACHE_SIZE = 2000 # number of objects to keep in memory
def resize_image(image, dest_width, dest_height, upsize_threshold=1.5):
# handle corner case of empty dest
if (dest_width * dest_height) == 0:
return broken_image
# calculate how much we need to enlarge/shrink the image so that a
# dimension lines up with the destination size
width_scale = float(dest_width) / image.width
height_scale = float(dest_height) / image.height
# scale such that one dimension lines up and one is overlapping
scale = max(width_scale, height_scale)
# check that we don't upsize too much