Revert several changes that broke tests
This is based on #15158 by @aneeshusa, with additional reverts.
This reverts #15064, which is causing many tests not to run, and #15129 and #15155 which landed while tests were not running and may have caused some new failures in iframe tests.
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Implement home end key scrolling
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* Refactor all scroll related code to use a new `ScrollLocation` struct which can either be a `delta` (as before) or a `Start` or `End` request, to represent the desire to scroll to the start and end of the page.
Effectively, everywhere a delta was used, there is now a `ScrollLocation` struct instead.
* Add key press listeners for HOME and END keys so as to cause a scroll to be queued with `ScrollLocation::Start` (in HOME case) or `ScrollLocation::End` (in END case).
* These changes depend on added support for the new `ScrollLocation` in webrender and webrender_traits. See https://github.com/servo/webrender/pull/540.
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- [ x] These changes fix#13082 (github issue number if applicable).
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- [ ] There are tests for these changes OR
- [x] These changes do not require tests because scrolling I/O
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Refactor to send iframe resize messages directly from layout thread to constellation
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- [X] These changes fix#14682.
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r? @jdm
passing tests:
tests/wpt/mozilla/tests/css/matchMedia.html, tests/wpt/mozilla/tests/mozilla/window_resize_not_triggered_on_load.html, tests/wpt/mozilla/tests/mozilla/iframe/resize_after_load.html, tests/wpt/mozilla/tests/css/meta_viewport_resize.html
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FIX for Implement scroll transactions
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Follow up on https://github.com/servo/servo/pull/14470
@mbrubeck @KiChjang @glennw I just found out in the context of https://github.com/servo/webrender/pull/600 I forgot to add a case for the very first scroll event, or else the scrolling on that PR, in a non-Mac OS environment, will only start after an 80ms pause following the initial scroll event...
Sorry this slipped through my initial testing...
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Implement scroll transactions
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@glennw Here is a first pass at faking Start scroll events by way of 'transactions', as suggested by @mstange at https://github.com/servo/webrender/pull/599#issuecomment-263323105
Since I still don't have a Linux environment available for testing(and my Mac doesn't have enough resources to run a VM at the moment), I tested this with both https://github.com/servo/webrender/pull/599 and https://github.com/servo/webrender/pull/600 on a Mac by:
* disabling start and end events by removing the content of these two functions: https://github.com/servo/servo/blob/master/components/compositing/compositor.rs#L1080 and https://github.com/servo/servo/blob/master/components/compositing/compositor.rs#L1093
* Setting `CAN_OVERSCROLL` to false for Mac OS in Webrender https://github.com/servo/webrender/blob/master/webrender/src/frame.rs#L29
* This PR also requires a `./mach update-cargo -a`
The desired behavior of both Webrender PR's, based on my manual testing, now also works when there are no end or start scroll events provided by the os. The scroll transactions do not affect normal scrolling on Mac OS, and both PR still work as before on that platform.
Both PR in Webrender need some re-basing and cleaning up, as does this one, and I first wanted to put this proposal forward, and also ask if someone has the time to do some testing in a real Linux environment...
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Reimplement scrolling to fragments
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- [x] These changes fix#13736, #10753 (github issue number if applicable).
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This reimplemntation of the feature uses ScrollRootIds to scroll
particular scrollable areas of the page.
Fixes#13736.
Fixes#10753.
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for CSS transitions and animations, not `requestAnimationFrame()`
callbacks.
In the case of the latter, the script thread will kick off the reflow if
it's necessary, so there's no need for the compositor to do it.
Some pages, like nytimes.com, like to call `requestAnimationFrame()`
without actually mutating the DOM in the callback. We should avoid
reflowing in this case.
This is a step in disassociating scrolling areas from stacking
contexts. Now scroll areas are defined by unique ids, which means that
in the future stacking context will be able to contain more than one.
Remove concept of Layers from Servo
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Layers were a feature of the legacy drawing path. If we re-add them at
some point, it probably makes more sense to make them a product of
display list inspection.
This change also remove a bunch of dead painting code.
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Layers were a feature of the legacy drawing path. If we re-add them at
some point, it probably makes more sense to make them a product of
display list inspection.
This change also remove a bunch of dead painting code.
Support taking screenshots when a webdriver server is active.
Improve the experience of using webdriver to take screenshots of Servo. When a screenshot can't be obtained immediately, increase the delay before trying again from 2ms to 1s.
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- [X] These changes fix#13826
- [X] These changes do not require tests because we can't test webdriver yet.
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This removes paint threads, rust-layers dependency, and changes
optional webrender types to be required.
The use_webrender option has been removed, however I've left
the "-w" command line option in place so that wpt
runner can continue to pass that. Once it's removed from there
we can also remove the -w option.
Once this stage is complete, it should be fine to change the
display list building code to generate webrender display
lists directly and avoid the conversion step.
Instead of letting the compositor try to find the correct scroll
layer for a touch event, switch touch events to work the same way
that mouse events do.
Touch events are now dispatched to the root pipeline, and then
forwarded to child iframes as required.
