blink::ElasticOverscrollController
Blink28623 Sep 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.)

Episoder(448)

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Blink and CC Thread: Implementing Position Sticky

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2 Jan 25min

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2 Jan 34min

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2 Jan 39min

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The provided text explains the StyleAdjuster component within the Blink rendering engine, which serves as a critical post-processing stage in the CSS style resolution pipeline. Positioned between init...

2 Jan 37min

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