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ReaderThumbnail: fix slow thumbnails when in scroll mode

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If originally with two-columns in page mode, and switching
to scroll mode, thumbnails generation would be slow as
the document would be rerendered for each thumbnail.
This commit is contained in:
poire-z
2023-10-08 17:51:41 +02:00
parent 5ec736ae96
commit 35f16f87a4
1 changed files with 7 additions and 1 deletions
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8
frontend/apps/reader/modules/readerthumbnail.lua
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@@ -420,7 +420,13 @@ function ReaderThumbnail:_getPageImage(page)
-- CRE documents: pages all have the aspect ratio of our screen (alt top status bar
-- will be croped out after drawing), we will show them just as rendered.
self.ui.rolling.rendering_state = nil -- Remove any partial rerendering icon
self.ui.view:onSetViewMode("page") -- Get out of scroll mode
if self.ui.view.view_mode == "scroll" then
-- Get out of scroll mode, and be sure we'll be in one-page mode as that
-- is what is shown in scroll mode (needs to do the following in that
-- order to avoid rendering hash change)
self.ui.rolling:onSetVisiblePages(1)
self.ui.view:onSetViewMode("page")
end
if self.ui.document.configurable.font_gamma < 30 then -- Increase font gamma (if not already increased),
self.ui.document:setGammaIndex(30) -- as downscaling will make text grayer
end