iced-rs/iced

`InfiniteList` widget

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#160 opened on Jan 15, 2020

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 (11 comments) (17 reactions) (0 assignees)Rust (30,491 stars) (1,572 forks)batch import
featurehelp wantedquestionrenderingwidget

Description

I am writing an app that loads more than 400 PNGs into a scroll view.

But, it seems that VRAM is out of memory because too many images are being loaded.

I want to unload images outside the rendering range of the scroll view. Is there a way to know the display status of children elements in scroll view?

Contributor guide

Tech stack
rust
Domain
desktop
Issue type
feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
4
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
over 1 week
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
stale
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
mostly clear
Prerequisites
Basic knowledge of RustFamiliarity with iced's widget systemUnderstanding of image loading and memory management
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
35
Research direction
Examine the existing widget implementations in the iced repository (e.g., the `widget` module) to understand how custom widgets are built. Look at the `Scrollable` widget to understand viewport detection. Investigate the image loading pipeline to see how images are currently managed. The issue comments may contain additional insights from maintainers and community members.