Struct IOCompositor 

pub struct IOCompositor {
    painters: Vec<Rc<RefCell<Painter>>>,
    shutdown_state: Rc<Cell<ShutdownState>>,
    compositor_receiver: RoutedReceiver<CompositorMsg>,
    pub(crate) embedder_to_constellation_sender: Sender<EmbedderToConstellationMessage>,
    time_profiler_chan: ProfilerChan,
    _mem_profiler_registration: ProfilerRegistration,
}

NB: Never block on the constellation, because sometimes the constellation blocks on us.

Fields

painters: Vec<Rc<RefCell<Painter>>>

All of the [Painters] for this IOCompositor. Each Painter handles painting to a single [RenderingContext].

shutdown_state: Rc<Cell<ShutdownState>>

Tracks whether we are in the process of shutting down, or have shut down and should close the compositor. This is shared with the Servo instance.

compositor_receiver: RoutedReceiver<CompositorMsg>

The port on which we receive messages.

embedder_to_constellation_sender: Sender<EmbedderToConstellationMessage>

The channel on which messages can be sent to the constellation.

time_profiler_chan: ProfilerChan

The channel on which messages can be sent to the time profiler.

_mem_profiler_registration: ProfilerRegistration

A handle to the memory profiler which will automatically unregister when it’s dropped.

Implementations

impl IOCompositor

pub fn new(state: InitialCompositorState) -> Rc<RefCell<Self>>

pub(crate) fn painter<'a>(&'a self) -> Ref<'a, Painter>

pub(crate) fn painter_mut<'a>(&'a self) -> RefMut<'a, Painter>

pub fn painter_id(&self) -> PainterId

pub fn deinit(&mut self)

pub fn rendering_context_size(&self) -> Size2D<u32, DevicePixel>

pub fn webgl_threads(&self) -> WebGLThreads

pub fn webrender_external_images( &self, ) -> Arc<Mutex<WebRenderExternalImageRegistry>>

pub fn webxr_running(&self) -> bool

pub fn webxr_main_thread_registry(&self) -> Registry

pub fn webgpu_image_map(&self) -> WGPUImageMap

pub fn webviews_needing_repaint(&self) -> Vec<WebViewId>

pub fn finish_shutting_down(&self)

fn handle_browser_message(&self, msg: CompositorMsg)

fn collect_memory_report(&self, sender: ReportsChan)

fn handle_browser_message_while_shutting_down(&self, msg: CompositorMsg)

Handle messages sent to the compositor during the shutdown process. In general, the things the compositor can do in this state are limited. It’s very important to answer any synchronous messages though as other threads might be waiting on the results to finish their own shut down process. We try to do as little as possible during this time.

When that involves generating WebRender ids, our approach here is to simply generate them, but assume they will never be used, since once shutting down the compositor no longer does any WebRender frame generation.

pub fn add_webview( &self, webview: Box<dyn WebViewTrait>, viewport_details: ViewportDetails, )

pub fn show_webview( &self, webview_id: WebViewId, hide_others: bool, ) -> Result<(), UnknownWebView>

pub fn hide_webview(&self, webview_id: WebViewId) -> Result<(), UnknownWebView>

pub fn raise_webview_to_top( &self, webview_id: WebViewId, hide_others: bool, ) -> Result<(), UnknownWebView>

pub fn move_resize_webview(&self, webview_id: WebViewId, rect: DeviceRect)

pub fn set_hidpi_scale_factor( &self, webview_id: WebViewId, new_scale_factor: Scale<f32, DeviceIndependentPixel, DevicePixel>, )

pub fn resize_rendering_context(&self, new_size: PhysicalSize<u32>)

pub fn set_page_zoom(&self, webview_id: WebViewId, new_zoom: f32)

pub fn page_zoom(&self, webview_id: WebViewId) -> f32

pub fn render(&self)

Render the WebRender scene to the active RenderingContext.

pub fn receiver(&self) -> &RoutedReceiver<CompositorMsg>

Get the message receiver for this IOCompositor.

pub fn handle_messages(&self, messages: Vec<CompositorMsg>)

pub fn perform_updates(&self) -> bool

pub fn toggle_webrender_debug(&self, option: WebRenderDebugOption)

pub fn capture_webrender(&self)

pub fn notify_input_event(&self, webview_id: WebViewId, event: InputEventAndId)

pub fn notify_scroll_event( &self, webview_id: WebViewId, scroll: Scroll, point: WebViewPoint, )

pub fn pinch_zoom( &self, webview_id: WebViewId, pinch_zoom_delta: f32, center: DevicePoint, )

pub fn device_pixels_per_page_pixel( &self, webview_id: WebViewId, ) -> Scale<f32, CSSPixel, DevicePixel>

pub(crate) fn shutdown_state(&self) -> ShutdownState

pub fn request_screenshot( &self, webview_id: WebViewId, rect: Option<WebViewRect>, callback: Box<dyn FnOnce(Result<RgbaImage, ScreenshotCaptureError>) + 'static>, )

pub fn notify_input_event_handled( &self, webview_id: WebViewId, input_event_id: InputEventId, result: InputEventResult, )