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Merge pull request #5352 from datvm:linear-progress-buffer

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PiperOrigin-RevId: 609528198
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Copybara-Service 2024-02-22 15:57:48 -08:00
commit 2613de471b
1 changed files with 10 additions and 5 deletions
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15
progress/internal/linear-progress.ts
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@ -16,8 +16,9 @@ import {Progress} from './progress.js';
export class LinearProgress extends Progress { export class LinearProgress extends Progress {
/** /**
* Buffer amount to display, a fraction between 0 and `max`. * Buffer amount to display, a fraction between 0 and `max`.
* If the value is 0 or negative, the buffer is not displayed.
*/ */
@property({type: Number}) buffer = 1; @property({type: Number}) buffer = 0;
// Note, the indeterminate animation is rendered with transform %'s // Note, the indeterminate animation is rendered with transform %'s
// Previously, this was optimized to use px calculated with the resizeObserver // Previously, this was optimized to use px calculated with the resizeObserver
@ -28,16 +29,20 @@ export class LinearProgress extends Progress {
(this.indeterminate ? 1 : this.value / this.max) * 100 (this.indeterminate ? 1 : this.value / this.max) * 100
}%)`, }%)`,
}; };
const bufferValue = this.buffer ?? 0;
const hasBuffer = bufferValue > 0;
const dotSize = this.indeterminate || !hasBuffer ? 1 : bufferValue / this.max;
const dotStyles = { const dotStyles = {
transform: `scaleX(${ transform: `scaleX(${dotSize * 100}%)`,
(this.indeterminate ? 1 : this.buffer / this.max) * 100
}%)`,
}; };
// Only display dots when visible - this prevents invisible infinite // Only display dots when visible - this prevents invisible infinite
// animation. // animation.
const hideDots = const hideDots =
this.indeterminate || this.buffer >= this.max || this.value >= this.max; this.indeterminate || !hasBuffer || bufferValue >= this.max || this.value >= this.max;
return html` return html`
<div class="dots" ?hidden=${hideDots}></div> <div class="dots" ?hidden=${hideDots}></div>
<div class="inactive-track" style=${styleMap(dotStyles)}></div> <div class="inactive-track" style=${styleMap(dotStyles)}></div>