Underpinnings for Caching Text Layouts #51065
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Summary: This adds infrastructure to let us start storing cached Android text layouts as part of a `ParagraphShadowNode`. After this, we will clear them out, and propagate them to state. Right now, the flag doesn't do much, apart from extra work. This is done by adding `TextLayoutManagerExtended::supportsPreparedLayout()`, and `TextLayoutManager::PreparedLayout` types, to shim between platforms, then on Android, we add a `PreparedLayout`, which is for now just an Android layout, with extra field (`maxNumberOfLines`, for some reason not exposed on recent versions). Android `TextLayoutManager` java side is split a little bit, so that we reuse all the existing logic for prepared layouts. I tried to set up the boundary, so that we don't reserialize a MapBuffer after preparation, and for simplicity, this means source of truth for attachment count, and attachment sizes, now lives on the layout. This means we need to change boundary a bit, where we are no longer able to pass in a buffer to fill from C++ side of attachment positions. Changelog: [Internal] Differential Revision: D73970149
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Summary: Pull Request resolved: facebook#51065 This adds infrastructure to let us start storing cached Android text layouts as part of a `ParagraphShadowNode`. After this, we will clear them out, and propagate them to state. Right now, the flag doesn't do much, apart from extra work. This is done by adding `TextLayoutManagerExtended::supportsPreparedLayout()`, and `TextLayoutManager::PreparedLayout` types, to shim between platforms, then on Android, we add a `PreparedLayout`, which is for now just an Android layout, with extra field (`maxNumberOfLines`, for some reason not exposed on recent versions). Android `TextLayoutManager` java side is split a little bit, so that we reuse all the existing logic for prepared layouts. I tried to set up the boundary, so that we don't reserialize a MapBuffer after preparation, and for simplicity, this means source of truth for attachment count, and attachment sizes, now lives on the layout. This means we need to change boundary a bit, where we are no longer able to pass in a buffer to fill from C++ side of attachment positions. Changelog: [Internal] Differential Revision: D73970149
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This pull request has been merged in f85b30b. |
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This pull request was successfully merged by @NickGerleman in f85b30b When will my fix make it into a release? | How to file a pick request? |
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Summary:
This adds infrastructure to let us start storing cached Android text layouts as part of a
ParagraphShadowNode. After this, we will clear them out, and propagate them to state. Right now, the flag doesn't do much, apart from extra work.This is done by adding
TextLayoutManagerExtended::supportsPreparedLayout(), andTextLayoutManager::PreparedLayouttypes, to shim between platforms, then on Android, we add aPreparedLayout, which is for now just an Android layout, with extra field (maxNumberOfLines, for some reason not exposed on recent versions).Android
TextLayoutManagerjava side is split a little bit, so that we reuse all the existing logic for prepared layouts. I tried to set up the boundary, so that we don't reserialize a MapBuffer after preparation, and for simplicity, this means source of truth for attachment count, and attachment sizes, now lives on the layout. This means we need to change boundary a bit, where we are no longer able to pass in a buffer to fill from C++ side of attachment positions.Changelog: [Internal]
Differential Revision: D73970149