renun/koreader
1
0
Fork 0
mirror of https://github.com/koreader/koreader.git synced 2025-08-10 00:52:38 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

ImageWidget optimisations (#2394)

Browse Source 
Avoid multiple renderings.
Don't cache big images (ie: screensaver images)
This commit is contained in:
poire-z
2016-12-04 15:22:05 +01:00
committed by Qingping Hou
parent 2c01f3add9
commit e1c3448d0e
1 changed files with 15 additions and 8 deletions
Download Patch File Download Diff File Expand all files Collapse all files

23
frontend/ui/widget/imagewidget.lua
View File

@@ -83,14 +83,18 @@ function ImageWidget:_loadfile()
-- hit cache
self._bb = cache.bb
else
-- cache this image
DEBUG("cache", hash)
cache = ImageCacheItem:new{
bb = Mupdf.renderImageFile(self.file, self.width, self.height),
}
cache.size = cache.bb.pitch * cache.bb.h * cache.bb:getBpp() / 8
ImageCache:insert(hash, cache)
self._bb = cache.bb
if self.height and self.height > 200 then -- don't cache big images
self._bb = Mupdf.renderImageFile(self.file, self.width, self.height)
else
-- cache this image
DEBUG("cache", hash)
cache = ImageCacheItem:new{
bb = Mupdf.renderImageFile(self.file, self.width, self.height),
}
cache.size = cache.bb.pitch * cache.bb.h * cache.bb:getBpp() / 8
ImageCache:insert(hash, cache)
self._bb = cache.bb
end
end
else
error("Image file type not supported.")
@@ -98,6 +102,9 @@ function ImageWidget:_loadfile()
end
function ImageWidget:_render()
if self._bb then -- already rendered
return
end
if self.image then
self:_loadimage()
elseif self.file then