test-card/src/routes/audio/channels/+layout.svelte

83 lines
1.4 KiB
Svelte

<script lang="ts">
import { onDestroy } from 'svelte';
let channelsEl: HTMLDivElement;
let cycling = false;
async function cycleChannels() {
cycling = true;
const buttons = channelsEl.querySelectorAll('button');
buttons.forEach((button) => (button.disabled = true));
const channels = channelsEl.querySelectorAll('audio');
while (cycling) {
for (const channel of channels) {
await channel.play();
await new Promise((resolve) => {
channel.onended = resolve;
});
if (!cycling) {
break;
}
}
}
buttons.forEach((button) => (button.disabled = false));
}
function startCycle() {
cycling = !cycling;
if (cycling) {
cycleChannels();
}
}
onDestroy(() => {
cycling = false;
});
</script>
<div class="channels" bind:this={channelsEl}>
<slot />
</div>
<div class="controls">
<button on:click={startCycle}>Cycle all</button>
</div>
<style>
.channels {
display: flex;
flex-direction: column;
justify-content: space-evenly;
font-size: 2rem;
flex-grow: 1;
position: relative;
}
:global(.channels .row) {
display: flex;
justify-content: space-between;
}
.controls {
text-align: center;
margin: 2rem 0;
font-size: 1.5rem;
}
:global(.channels .center) {
font-size: 0.9em;
}
:global(.channels .label) {
opacity: 0.33;
font-size: 6rem;
position: absolute;
top: 50%;
left: 50%;
transform: translate(-50%, -50%);
pointer-events: none;
}
</style>