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CreDocument: enable crengine cache with smaller documents

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poire-z
2023-02-16 23:30:54 +01:00
parent e4b97802a5
commit c8616f1f35
1 changed files with 16 additions and 0 deletions
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16
frontend/document/credocument.lua
View File

@@ -233,6 +233,22 @@ function CreDocument:setupDefaultView()
self._document:setIntProperty("crengine.image.scaling.zoomout.inline.mode", 0)
self._document:setIntProperty("crengine.image.scaling.zoomout.inline.scale", 1)
-- crengine won't create a cache for small documents, which could actually
-- makes re-opening small files slower than big files!
-- Also, we need a cache for ReaderRolling's partial rerenderings handling.
-- In crengine code:
-- A cache is created if the file size is larger than:
-- crengine.cache.filesize.min = PROP_MIN_FILE_SIZE_TO_CACHE: default 300000
-- (fallback: DOCUMENT_CACHING_SIZE_THRESHOLD=1048576)
-- A cache is searched for (to be used) only if the file size is larger than 65535:
-- hardcoded not overridable: DOCUMENT_CACHING_MIN_SIZE=65535
-- Other related variables:
-- PROP_FORCED_MIN_FILE_SIZE_TO_CACHE: not used (a hardcoded value of 30000 is used instead)
-- (if filesize < 30000: swapToCache simulated but not really done)
-- DOCUMENT_CACHING_MAX_RAM_USAGE 8388608: not used
-- Force having a cache with small documents (but at least > 65K)
self._document:setIntProperty("crengine.cache.filesize.min", 65536)
-- If switching to two pages on view, we want it to behave like two columns
-- and each view to be a single page number (instead of the default of two).
-- This ensures that page number and count are consistent between top and