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risuai/src/lib/UI/GUI/TextAreaResizable.svelte

40 lines
1.2 KiB
Svelte

<script lang="ts">
import { onMount } from 'svelte';
import { DBState } from "../../../ts/storage/database.svelte";
import { longpress } from 'src/ts/gui/longtouch';
let textarea:HTMLElement = $state();
let previousScrollHeight = 0;
interface Props {
value?: string;
handleLongPress?: any;
}
let { value = $bindable(''), handleLongPress = (e:MouseEvent) => {} }: Props = $props();
function resize() {
textarea.style.height = '0px'; // Reset the textarea height
textarea.style.height = `calc(${textarea.scrollHeight}px + 1rem)`; // Set the new height
}
function handleInput() {
if (textarea.scrollHeight !== previousScrollHeight) {
previousScrollHeight = textarea.scrollHeight;
resize();
}
}
onMount(() => {
resize();
});
</script>
<textarea
bind:this={textarea}
oninput={handleInput}
use:longpress={handleLongPress}
bind:value={value}
class="rounded-md p-2 text-textcolor bg-transparent resize-none overflow-y-hidden border border-darkborderc"
style:font-size="{0.875 * (DBState.db.zoomsize / 100)}rem"
style:line-height="{(DBState.db.lineHeight ?? 1.25) * (DBState.db.zoomsize / 100)}rem"
></textarea>