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Smarter/configurable surface cache in IconBuffer

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This commit is contained in:
Marco Pesenti Gritti 2007-08-26 12:36:34 +02:00
parent a8938ab8ba
commit f44c340b3a
1 changed files with 26 additions and 4 deletions
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30
sugar/graphics/icon.py
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@ -128,7 +128,8 @@ class _BadgeInfo(object):
class _IconBuffer(object):
def __init__(self):
self._svg_loader = _get_svg_loader()
self._surface = None
self._surface_cache = {}
self._cache_size = 1
self.icon_name = None
self.file_name = None
@ -138,6 +139,10 @@ class _IconBuffer(object):
self.width = None
self.height = None
def _get_cache_key(self):
return (self.icon_name, self.file_name, self.fill_color,
self.stroke_color, self.badge_name, self.width, self.height)
def _load_svg(self, file_name):
entities = {}
if self.fill_color:
@ -224,8 +229,12 @@ class _IconBuffer(object):
return info
def get_surface(self):
if self._surface is not None:
return self._surface
cache_key = self._get_cache_key()
if self._surface_cache.has_key(cache_key):
print cache_key
return self._surface_cache[cache_key]
print 'gah'
icon_info = self._get_icon_info()
if icon_info.file_name is None:
@ -267,13 +276,26 @@ class _IconBuffer(object):
context.translate(badge_info.attach_x, badge_info.attach_y)
self._draw_badge(context, badge_info.size)
self._surface = surface
if (len(self._surface_cache) == self._cache_size):
self._surface_cache.popitem()
self._surface_cache[cache_key] = surface
return surface
def invalidate(self):
self._surface = None
def get_cache_size(self):
return self._cache_size
def set_cache_size(self, cache_size):
while len(self._surface_cache) > cache_size:
print len(self._surface_cache)
self._surface_cache.popitem()
self._cache_size
cache_size = property(get_cache_size, set_cache_size)
class Icon(gtk.Image):
__gtype_name__ = 'SugarIcon'