DriftEngineThe 2D layer · function
applyComposition
Fold one composition update into the model.
Explained in Sprites and tilemaps.
function applyComposition(model: TextModel, state:import { applyComposition } from '@driftengine/ui2d';Parameters
| Parameter | Type | Description |
|---|---|---|
model | TextModel | |
state | { text: string; done: boolean; } |
In depth
An update replaces whatever the previous update of this composition put there, rather than the whole field — which is what makes a five-keystroke entry produce one word instead of five.
done clears the range, and that is the step everyone forgets. A finished composition that
leaves its range set means the next keystroke overwrites the text that was just committed,
which presents as characters vanishing one word behind the caret.