anki/ts/components/Popover.svelte
Matthias Metelka a48c96559d
Fix glitchy animation of floating elements (#2224)
* Set max-height of 400px to scrollable Popover

* Pass computed placement to user components

to set different animation directions when the placement changes.

* Move elevation effect from WithFloating/WithOverlay to Popover

* Apply same changes as in WithFloating to WithOverlay

* Adjust FloatingArrow CSS to Popover

* Run eslint and formatter
2022-12-01 15:45:52 +10:00

104 lines
2.8 KiB
Svelte

<!--
Copyright: Ankitects Pty Ltd and contributors
License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
-->
<script lang="ts">
import type { Placement } from "@floating-ui/dom";
import { getContext, onMount } from "svelte";
import { create_in_transition } from "svelte/internal";
import type { Writable } from "svelte/store";
import { slide } from "svelte/transition";
import { floatingKey } from "./context-keys";
export let scrollable = false;
let element: HTMLDivElement;
let wrapper: HTMLDivElement;
let hidden = true;
let minHeight = 0;
let placement: Placement;
const placementStore = getContext<Writable<Promise<Placement>>>(floatingKey);
/* await computed placement of floating element to determine animation direction */
$: if ($placementStore !== undefined) {
$placementStore.then((computedPlacement) => {
if (placement != computedPlacement) {
placement = computedPlacement;
/* use internal function to animate popover */
create_in_transition(element, slide, { duration: 200 }).start();
hidden = false;
}
});
}
onMount(async () => {
/* set min-height on wrapper to ensure correct
popover placement at animation start */
minHeight = wrapper.offsetHeight;
});
</script>
<div
class="popover-wrapper d-flex"
style:--min-height="{minHeight}px"
bind:this={wrapper}
>
<div
class="popover"
class:scrollable
class:hidden
class:top={placement === "top"}
class:right={placement === "right"}
class:bottom={placement === "bottom"}
class:left={placement === "left"}
bind:this={element}
>
<slot />
</div>
</div>
<style lang="scss">
@use "sass/elevation" as elevation;
.popover-wrapper {
min-height: var(--min-height, 0);
}
.popover {
@include elevation.elevation(8);
align-self: flex-start;
border-radius: var(--border-radius);
background-color: var(--canvas-elevated);
border: 1px solid var(--border-subtle);
min-width: var(--popover-width, 1rem);
max-width: 95vw;
/* Needs this much space for FloatingArrow to be positioned */
padding: var(--popover-padding-block, 6px) var(--popover-padding-inline, 6px);
&.scrollable {
max-height: 400px;
overflow: hidden auto;
}
&.hidden {
width: 0;
visibility: hidden;
}
/* alignment determines slide animation direction */
&.top,
&.left {
align-self: flex-end;
}
&.bottom,
&.right {
align-self: flex-start;
}
}
</style>