This is a step toward the renderer-per-WebView goal. It moves various
details out of `IOCompositor`.
- Image output: This is moved to servoshell as now applications can
access the image contents of a `WebView` via
`RenderingContext::read_to_image`. Most options for this are moved to
`ServoShellPreferences` apart from `wait_for_stable_image` as this
requires a specific kind of coordination in the `ScriptThread` that is
also very expensive. Instead, paint is now simply delayed until a
stable image is reached and `WebView::paint()` returns a boolean.
Maybe this can be revisited in the future.
- Shutdown: Shutdown is now managed by libservo itself. Shutdown state
is shared between the compositor and `Servo` instance. In the future,
this sharing might be unecessary.
- `CompositeTarget` has been removed entirely. This no longer needs to
be passed when creating a Servo instance.
Signed-off-by: Martin Robinson <mrobinson@igalia.com>
Co-authored-by: Ngo Iok Ui (Wu Yu Wei) <yuweiwu@pm.me>
Instead of exposing many different kinds of messages to the compositor
that are routed through the constellation, expose a single message type
which can be sent across IPC channels. In addition, this IPC channel and
the route to the crossbeam channel with the compositor is created along
with the `CompositorProxy`, simplifying what needs to be passed around
during pipeline initialization.
Previously, some image updates (from video) were sent over IPC with a
special serialization routine and some were sent via crossbeam channels
(canvas). Now all updates go over the IPC channel `IpcSharedMemory` is
used to avoid serialization penalties. This should improve performance
and reduce copies for video, but add a memory copy overhead for canvas.
This will improve in the future when canvas renders directly into a
texture.
All-in-all this is a simplification which opens the path toward having a
standard compositor API and reduces the number of duplicate messages and
proxying that had to happen in libservo.
Signed-off-by: Martin Robinson <mrobinson@igalia.com>
Instead of exposing many different kinds of messages to the compositor
that are routed through the constellation, expose a single message type
which can be sent across IPC channels. In addition, this IPC channel and
the route to the crossbeam channel with the compositor is created along
with the `CompositorProxy`, simplifying what needs to be passed around
during pipeline initialization.
Previously, some image updates (from video) were sent over IPC with a
special serialization routine and some were sent via crossbeam channels
(canvas). Now all updates go over the IPC channel `IpcSharedMemory` is
used to avoid serialization penalties. This should improve performance
and reduce copies for video, but add a memory copy overhead for canvas.
This will improve in the future when canvas renders directly into a
texture.
All-in-all this is a simplification which opens the path toward having a
standard compositor API and reduces the number of duplicate messages and
proxying that had to happen in libservo.
Signed-off-by: Martin Robinson <mrobinson@igalia.com>
* Add multiple concurrent top-level browsing contexts
Co-authored-by: Delan Azabani <dazabani@igalia.com>
* Rename variables and comments
There are some variable and comments still use browser as names.
This commit renames them to webview.
* Update log message from web view to webview
* Revert offscreen_framebuffer_id rename
* Rename all web view to webview
* Cargo fmt
* Fix viewport/event/clear coordinates when multiview is disabled
* Only deprecate things when multiview is enabled
* Update WebViewManger with shown and invisible sets
Replace visible_webviews and native_window_is_visible with shown_webviews
and invisible_webviews. Add 4 more methods to set them accordingly. The
behavior of is_effectively_visible will return true if the wbview is in
shown_webviews set but not in invisible_webviews.
* Update variant behaviors
* Rename WebViewVisibilityChanged to MarkWebViewInvisible
* Fix unit test by marking id 3 visible again
* Update MarkWebViewInvisible and add UnmarkWebViewInvisible
* Update format and doc comments
* Clean up doc comments
* Address style and naming changes
* Rename UpdateWebView to UpdateFrameTreeForWebView
* constellation: send frame tree unconditionally over focus and feature
* Clarify shown and invisible sets in constellation WebViewManager
* Eliminate forward_to_constellation!()
* Actually remove the unused macro
* Don’t gate compositor changes on multiview feature flag
* Update todo in mouse event dispatch
* Pass all visible webview ids in a single ReadyToPresent message
* Fix compile and lint errors
* servoshell: fix gap between minibrowser toolbar and webview
* Fix failure in /_mozilla/mozilla/window_resizeTo.html
* Fix compile warnings
* Remove stray dbg!()
* Remove confusing “effectively visible” logic (see #31815, #31816)
* Allow embedder to show/hide/raise webviews without ipc
* Update root pipeline only when painting order actually changes
* Stop gating old focus and SetFrameTree behaviour behind Cargo feature
* Use webview_id and WebViewId in webview-related code
* Improve logging of webview-related embedder events
* Allow webview Show and Raise events to optionally hide all others
* Don’t do anything in response to WebViewPaintingOrder
* Remove WebViewPaintingOrder, since its payload is unreliable
* On MoveResizeWebView, only update root pipeline if rect changed
* Rename IOCompositor methods for clarity
* compositor: add event tracing; log webview ops even without ipc
* Add temporary debug logging
* Add more temporary debug logging
* Remove temporary logging in compositor
* Remove temporary debug logging
* Add temporary debug logging, but defer I/O until panic
* Capture a backtrace with each crash log entry
* Proper error handling without panicking in WebViewManager
* Clean up imports in constellation
---------
Co-authored-by: Delan Azabani <dazabani@igalia.com>
Co-authored-by: Martin Robinson <mrobinson@igalia.com>
