blink::ElasticOverscrollController
Blink28623 Syys 2025

blink::ElasticOverscrollController

Overscroll orchestration and animation. This Blink-side controller manages the rubber-banding (elastic stretch and rebound) effect when a scrollable area is overscrolled. It observes gesture scroll events and scroll results, and computes the overscroll stretch and bounce-back animations for the currently scrolling element . In practice, ElasticOverscrollController applies platform-specific physics (e.g. exponential spring on Android/macOS vs. a cubic-bezier curve on Windows) to produce the elastic overscroll visual feedback. It’s the central class coordinating overscroll state and animation timing, making it critical for implementing elastic overscroll on any scroll container (not just the root). (Note: Internally, Blink provides different implementations like ElasticOverscrollControllerExponential and ElasticOverscrollControllerBezier that define the physics for various platforms , but the base controller interface is where the overscroll behavior is orchestrated.)

Jaksot(403)

blink::TransformPaintPropertyNode / ClipPaintPropertyNode / EffectPaintPropertyNode / ScrollPaintPropertyNode

blink::TransformPaintPropertyNode / ClipPaintPropertyNode / EffectPaintPropertyNode / ScrollPaintPropertyNode

The paint property trees captured during painting (transform, clip, effect/opacity, scroll offset) that define visual & coordinate‑space state.

21 Syys 202541min

blink::PaintController

blink::PaintController

Records drawing into a DisplayItemList, segmenting it into PaintChunks keyed by property‑tree state. (Output: a PaintArtifact.)

21 Syys 202533min

blink::LayoutView (root of the layout tree)

blink::LayoutView (root of the layout tree)

Computes geometry for boxes when layout is dirty.

21 Syys 202539min

blink::StyleEngine / style resolver

blink::StyleEngine / style resolver

Recalculates computed styles that changed since last frame (if any).

21 Syys 202542min

blink::Page → blink::LocalFrame / LocalFrameView

blink::Page → blink::LocalFrame / LocalFrameView

The document’s frame & viewport; LocalFrameView is the scrollable root that triggers layout/paint when needed. provided source outlines the fundamental components of the Blink rendering engine, specif...

21 Syys 202539min

blink::WebViewImpl

blink::WebViewImpl

The source text provides an in-depth explanation of the blink::WebViewImpl class within Chromium's Blink rendering engine, characterizing it as the central control point on the renderer's main thread ...

20 Syys 202539min

cc::LayerTreeHost in Chromium's Compositor

cc::LayerTreeHost in Chromium's Compositor

The source provides an extensive technical explanation of the cc::LayerTreeHost class, which acts as the central main-thread component in the Chromium compositor architecture. It details how this comp...

20 Syys 202537min

cc:: Scheduler / SchedulerStateMachine

cc:: Scheduler / SchedulerStateMachine

Drives the frame loop on the compositor thread (BeginFrame → Animate → Commit → Draw), deciding when to ask Blink for a new frame or to draw with existing state.

20 Syys 202548min