The existing architecture serializes all cards and revlog entries in
the search range into a protobuf message, which the web frontend needs
to decode and then process. The thinking at the time was that this would
make it easier for add-ons to add extra graphs, but in the ~2.5 years
since the new graphs were introduced, no add-ons appear to have taken
advantage of it.
The cards and revlog entries can grow quite large on large collections -
on a collection I tested with approximately 2.5M reviews, the serialized
data is about 110MB, which is a lot to have to deserialize in JavaScript.
This commit shifts the preliminary processing of the data to the Rust end,
which means the data is able to be processed faster, and less needs to
be sent to the frontend. On the test collection above, this reduces the
serialized data from about 110MB to about 160KB, resulting in a more
than 2x performance improvement, and reducing frontend memory usage from
about 400MB to about 40MB.
This also makes #2043 more feasible - while it is still about 50-100%
slower than protobufjs, with the much smaller message size, the difference
is only about 10ms.
* Fix MathJax popup fails to appear when adding MathJax via Fx button
* Revert "Fix MathJax popup fails to appear when adding MathJax via Fx button"
This reverts commit 11115f59bcbde22bbc0448bfd6b86e887a8a56a7.
* Fix MathJax popup fails to appear when adding MathJax via Fx button
Use setTimeout() according to the PR review
* Make SpinBox chevrons more subtle
and keep showing them when input is focused.
* Show chevrons only on hover
* Revert "Show chevrons only on hover"
This reverts commit 20e5ec169116fe3638c53c6ec414151d20c0de6b.
* Swap flag and mark indicator position in RTL mode
* Make buttons of bottom toolbar align to edge of screen in RTL mode
* Use start instead of left and end instead of right
* Persist collapsed- and field states with SessionOptions object
* Format types.ts
* Replace format function with f-string
* Give setters more descriptive parameter names
* Do not use default prefix for descriptions and fonts
since they are not meant to be changed via Svelte.
* Do not include oldIdx in Select change event
I included it due to confusion about the variable names in the Change Notetype components.
* Remove redundant on:change listener from NotetypeSelector
* Use Select component in Change Notetype MapperRow (again)
* Remove redundant --cols and --col-size definitions
Bootstrap divides rows into columns of equal width by default.
* Add highlight to active DropdownItem
* Remove bootstrap dropdown item styling
* Fix JS error on dropdown accept action
cause: When closing the dropdown, buttonRef was removed before the callback in setTimeout was run.
* Align spinner buttons on right
The initial rationale for splitting them up was to be more touch friendly,
but we won't be able to use them on mobile anyway due to the conflicts
with double taps zooming in. On desktop, having them apart requires more
mouse movement when overshooting, so it's better to have them in one
place.
Text is now left-aligned again, which matches our other inputs like
learning steps.
The left/right buttons have been changed to up/down, which matches our
Qt spinners, and avoids RTL concerns.
This commit also removes the border on hover/select - it caused the
left-aligned content to flicker, and didn't look correct. Perhaps we could
add it back in a better way in the future.
* Hide spinner buttons on mobile devices
Tapping on them conflicts with the page zoom gesture.
* Remove min-height on spinner buttons
* Only show spinner on hover
Since they're only useful with a mouse, and only useful when they're
under the cursor, hiding them when focused keeps things less cluttered.
* Set max-height of 400px to scrollable Popover
* Pass computed placement to user components
to set different animation directions when the placement changes.
* Move elevation effect from WithFloating/WithOverlay to Popover
* Apply same changes as in WithFloating to WithOverlay
* Adjust FloatingArrow CSS to Popover
* Run eslint and formatter
* Give deck browser table an elevated container look
* Tweak colors of elevated containers (e.g. in deck options)
* Prepare editor fields for custom backgrounds
* Tweak field margin and add explanatory comment
(for upgrading users, please see the notes at the bottom)
Bazel brought a lot of nice things to the table, such as rebuilds based on
content changes instead of modification times, caching of build products,
detection of incorrect build rules via a sandbox, and so on. Rewriting the build
in Bazel was also an opportunity to improve on the Makefile-based build we had
prior, which was pretty poor: most dependencies were external or not pinned, and
the build graph was poorly defined and mostly serialized. It was not uncommon
for fresh checkouts to fail due to floating dependencies, or for things to break
when trying to switch to an older commit.
For day-to-day development, I think Bazel served us reasonably well - we could
generally switch between branches while being confident that builds would be
correct and reasonably fast, and not require full rebuilds (except on Windows,
where the lack of a sandbox and the TS rules would cause build breakages when TS
files were renamed/removed).
Bazel achieves that reliability by defining rules for each programming language
that define how source files should be turned into outputs. For the rules to
work with Bazel's sandboxing approach, they often have to reimplement or
partially bypass the standard tools that each programming language provides. The
Rust rules call Rust's compiler directly for example, instead of using Cargo,
and the Python rules extract each PyPi package into a separate folder that gets
added to sys.path.
These separate language rules allow proper declaration of inputs and outputs,
and offer some advantages such as caching of build products and fine-grained
dependency installation. But they also bring some downsides:
- The rules don't always support use-cases/platforms that the standard language
tools do, meaning they need to be patched to be used. I've had to contribute a
number of patches to the Rust, Python and JS rules to unblock various issues.
- The dependencies we use with each language sometimes make assumptions that do
not hold in Bazel, meaning they either need to be pinned or patched, or the
language rules need to be adjusted to accommodate them.
I was hopeful that after the initial setup work, things would be relatively
smooth-sailing. Unfortunately, that has not proved to be the case. Things
frequently broke when dependencies or the language rules were updated, and I
began to get frustrated at the amount of Anki development time I was instead
spending on build system upkeep. It's now about 2 years since switching to
Bazel, and I think it's time to cut losses, and switch to something else that's
a better fit.
The new build system is based on a small build tool called Ninja, and some
custom Rust code in build/. This means that to build Anki, Bazel is no longer
required, but Ninja and Rust need to be installed on your system. Python and
Node toolchains are automatically downloaded like in Bazel.
This new build system should result in faster builds in some cases:
- Because we're using cargo to build now, Rust builds are able to take advantage
of pipelining and incremental debug builds, which we didn't have with Bazel.
It's also easier to override the default linker on Linux/macOS, which can
further improve speeds.
- External Rust crates are now built with opt=1, which improves performance
of debug builds.
- Esbuild is now used to transpile TypeScript, instead of invoking the TypeScript
compiler. This results in faster builds, by deferring typechecking to test/check
time, and by allowing more work to happen in parallel.
As an example of the differences, when testing with the mold linker on Linux,
adding a new message to tags.proto (which triggers a recompile of the bulk of
the Rust and TypeScript code) results in a compile that goes from about 22s on
Bazel to about 7s in the new system. With the standard linker, it's about 9s.
Some other changes of note:
- Our Rust workspace now uses cargo-hakari to ensure all packages agree on
available features, preventing unnecessary rebuilds.
- pylib/anki is now a PEP420 implicit namespace, avoiding the need to merge
source files and generated files into a single folder for running. By telling
VSCode about the extra search path, code completion now works with generated
files without needing to symlink them into the source folder.
- qt/aqt can't use PEP420 as it's difficult to get rid of aqt/__init__.py.
Instead, the generated files are now placed in a separate _aqt package that's
added to the path.
- ts/lib is now exposed as @tslib, so the source code and generated code can be
provided under the same namespace without a merging step.
- MyPy and PyLint are now invoked once for the entire codebase.
- dprint will be used to format TypeScript/json files in the future instead of
the slower prettier (currently turned off to avoid causing conflicts). It can
automatically defer to prettier when formatting Svelte files.
- svelte-check is now used for typechecking our Svelte code, which revealed a
few typing issues that went undetected with the old system.
- The Jest unit tests now work on Windows as well.
If you're upgrading from Bazel, updated usage instructions are in docs/development.md and docs/build.md. A summary of the changes:
- please remove node_modules and .bazel
- install rustup (https://rustup.rs/)
- install rsync if not already installed (on windows, use pacman - see docs/windows.md)
- install Ninja (unzip from https://github.com/ninja-build/ninja/releases/tag/v1.11.1 and
place on your path, or from your distro/homebrew if it's 1.10+)
- update .vscode/settings.json from .vscode.dist
* Prevent global focus border on tag-input
* Fix margin issues with tag editor
* Remove redundant autocomplete call
that caused the addition of an empty tag when tag suggestions were selected with the Enter key.
* Prevent input text from overlapping with newly added tags
... at least when they're selected from the autocomplete list via mouse. If they're selected via keyboard, there's still an overlapping issue.
* Fix error on updateSuggestions
* Hide empty tag
* Make double-click to collapse/expand translatable
* Reduce font size of answer button indicators
* Increase padding of browser rows with ResizeToContents on vertical header
* Remove 0.8 scale factor for dropdown item font-size
* Remove font-size prop entirely from DropdownItem
* Revert "Remove font-size prop entirely from DropdownItem"
This reverts commit bb0a158f96183cca74e198867070c2f99af04dc4.
* Remove hard-coded Python font sizes
* Move font size and scrollbar into _root-vars.scss
* Revert editor size variable to 1.6
* Fix icon alignment
* Fix checkbox alignment for dropdown items
* Remove unused classes from Tag.svelte
* Revert "Increase padding of browser rows with ResizeToContents on vertical header"
This reverts commit 77bfc854ba140dd99aae98efcdd4af7052615fa6.
* Remove option to set font size of browser entries
* Add setting for browser row padding to preferences
* Revert "Add setting for browser row padding to preferences"
This reverts commit 75c59da65a1028e2caa3c48b247f99825c1b0b6c.
* Revert "Remove option to set font size of browser entries"
This reverts commit a543783d8ea079f39b7ae445152573c96be29841.
* Replace autoPlacement with flip
* Remove logic made redundant by use of flip()
* Edit preferred placement on components using WithFloating
* Rename placement to preferredPlacement
* Set "bottom" as default placement and remove redundant declarations
