this is take #2 of this PR https://github.com/tldraw/tldraw/pull/3764
This continues the idea kicked off in
https://github.com/tldraw/tldraw/pull/3684 to explore LOD and takes it
in a different direction.
Several things here to call out:
- our dotcom version would start to use Cloudflare's image transforms
- we don't rewrite non-image assets
- we debounce zooming so that we're not swapping out images while
zooming (it creates jank)
- we load different images based on steps of .25 (maybe we want to make
this more, like 0.33). Feels like 0.5 might be a bit too much but we can
play around with it.
- we take into account network connection speed. if you're on 3g, for
example, we have the size of the image.
- dpr is taken into account - in our case, Cloudflare handles it. But if
it wasn't Cloudflare, we could add it to our width equation.
- we use Cloudflare's `fit=scale-down` setting to never scale _up_ an
image.
- we don't swap the image in until we've finished loading it
programatically (to avoid a blank image while it loads)
TODO
- [x] We need to enable Cloudflare's pricing on image transforms btw
@steveruizok 😉 - this won't work quite yet until we do that.
### Change Type
<!-- ❗ Please select a 'Scope' label ❗️ -->
- [x] `sdk` — Changes the tldraw SDK
- [ ] `dotcom` — Changes the tldraw.com web app
- [ ] `docs` — Changes to the documentation, examples, or templates.
- [ ] `vs code` — Changes to the vscode plugin
- [ ] `internal` — Does not affect user-facing stuff
<!-- ❗ Please select a 'Type' label ❗️ -->
- [ ] `bugfix` — Bug fix
- [x] `feature` — New feature
- [ ] `improvement` — Improving existing features
- [ ] `chore` — Updating dependencies, other boring stuff
- [ ] `galaxy brain` — Architectural changes
- [ ] `tests` — Changes to any test code
- [ ] `tools` — Changes to infrastructure, CI, internal scripts,
debugging tools, etc.
- [ ] `dunno` — I don't know
### Test Plan
1. Test images on staging, small, medium, large, mega
2. Test videos on staging
- [x] Unit Tests
- [ ] End to end tests
### Release Notes
- Assets: make option to transform urls dynamically to provide different
sized images on demand.
## Migration path
1. If any of your shapes implement `toSvg` for exports, you'll need to
replace your implementation with a new version that returns JSX (it's a
react component) instead of manually constructing SVG DOM nodes
2. `editor.getSvg` is deprecated. It still works, but will be going away
in a future release. If you still need SVGs as DOM elements rather than
strings, use `new DOMParser().parseFromString(svgString,
'image/svg+xml').firstElementChild`
## The change in detail
At the moment, our SVG exports very carefully try to recreate the
visuals of our shapes by manually constructing SVG DOM nodes. On its own
this is really painful, but it also results in a lot of duplicated logic
between the `component` and `getSvg` methods of shape utils.
In #3020, we looked at using string concatenation & DOMParser to make
this a bit less painful. This works, but requires specifying namespaces
everywhere, is still pretty painful (no syntax highlighting or
formatting), and still results in all that duplicated logic.
I briefly experimented with creating my own version of the javascript
language that let you embed XML like syntax directly. I was going to
call it EXTREME JAVASCRIPT or XJS for short, but then I noticed that we
already wrote the whole of tldraw in this thing called react and a (imo
much worse named) version of the javascript xml thing already existed.
Given the entire library already depends on react, what would it look
like if we just used react directly for these exports? Turns out things
get a lot simpler! Take a look at lmk what you think
This diff was intended as a proof of concept, but is actually pretty
close to being landable. The main thing is that here, I've deliberately
leant into this being a big breaking change to see just how much code we
could delete (turns out: lots). We could if we wanted to make this
without making it a breaking change at all, but it would add back a lot
of complexity on our side and run a fair bit slower
---------
Co-authored-by: huppy-bot[bot] <128400622+huppy-bot[bot]@users.noreply.github.com>
This PR moves the tldraw.com app into the public repo.
### Change Type
- [x] `internal` — Any other changes that don't affect the published
package[^2]
---------
Co-authored-by: Dan Groshev <git@dgroshev.com>
Co-authored-by: alex <alex@dytry.ch>
