Effects
LEGEND APPSPreview
Code walkthrough
Emphasize and scroll to selected lines of source.
All effectsRecorded in Legend Slides for macOS (release build).
Requires a Legend Slides build with effect installation support. Installs the presenting pack (1.0.5, 22 KB source) and its dependencies. macOS host capabilities: reanimated, skia. Installed decks work offline.
Use it in a deck
code-walkthrough.mdx
---
title: Code walkthrough
---
import { View, Text } from "react-native";
import { CodeWalkthrough } from "slides:presenting/CodeWalkthrough";
export const code = `async function showResults(query) {
const rows = await search(query);
const visible = rows.slice(0, 20);
setResults(visible);
announce(visible.length);
}`;
export const highlights = [2, 3, 4];
export const notes = ["Fetch matching rows", "Keep the visible rows", "Publish the results"];
# Code walkthrough
<View style={{ width: 1696, height: 650 }}>
<Steps count={3}>{step => <CodeWalkthrough source={code} lines={[highlights[step], highlights[step]]} fontSize={34} explanation={<Text style={{ color: "white", fontSize: 52 }}>{notes[step]}</Text>} />}</Steps>
</View>
Configure
- source
- Source text to display.
- lines
- One-based selected lines.
- explanation
- Content beside the code.
- fontSize
- Set code text size; defaults to 25.
Only imported effects enter the compiled deck. Installation and versioning โ
More in the presenting pack
Progressive detail
presentingReveal and compare caller-supplied content while keeping its state mounted.
Comparison wipe
presentingReveal and compare caller-supplied content while keeping its state mounted.
Content swap
presentingReveal and compare caller-supplied content while keeping its state mounted.