misskey/src/web/app/common/views/components/post-menu.vue

<template>
<div class="mk-post-menu">
	<div class="backdrop" ref="backdrop" @click="close"></div>
	<div class="popover { compact: opts.compact }" ref="popover">
		<button v-if="post.user_id === I.id" @click="pin">%i18n:common.tags.mk-post-menu.pin%</button>
	</div>
</div>
</template>

<script lang="ts">
import Vue from 'vue';
import * as anime from 'animejs';

export default Vue.extend({
	props: ['post', 'source', 'compact'],
	mounted() {
		const popover = this.$refs.popover as any;

		const rect = this.source.getBoundingClientRect();
		const width = popover.offsetWidth;
		const height = popover.offsetHeight;

		if (this.compact) {
			const x = rect.left + window.pageXOffset + (this.source.offsetWidth / 2);
			const y = rect.top + window.pageYOffset + (this.source.offsetHeight / 2);
			popover.style.left = (x - (width / 2)) + 'px';
			popover.style.top = (y - (height / 2)) + 'px';
		} else {
			const x = rect.left + window.pageXOffset + (this.source.offsetWidth / 2);
			const y = rect.top + window.pageYOffset + this.source.offsetHeight;
			popover.style.left = (x - (width / 2)) + 'px';
			popover.style.top = y + 'px';
		}

		anime({
			targets: this.$refs.backdrop,
			opacity: 1,
			duration: 100,
			easing: 'linear'
		});

		anime({
			targets: this.$refs.popover,
			opacity: 1,
			scale: [0.5, 1],
			duration: 500
		});
	},
	methods: {
		pin() {
			(this as any).api('i/pin', {
				post_id: this.post.id
			}).then(() => {
				this.$destroy();
			});
		},

		close() {
			(this.$refs.backdrop as any).style.pointerEvents = 'none';
			anime({
				targets: this.$refs.backdrop,
				opacity: 0,
				duration: 200,
				easing: 'linear'
			});

			(this.$refs.popover as any).style.pointerEvents = 'none';
			anime({
				targets: this.$refs.popover,
				opacity: 0,
				scale: 0.5,
				duration: 200,
				easing: 'easeInBack',
				complete: () => this.$destroy()
			});
		}
	}
});
</script>

<style lang="stylus" scoped>
$border-color = rgba(27, 31, 35, 0.15)

.mk-post-menu
	position initial

	> .backdrop
		position fixed
		top 0
		left 0
		z-index 10000
		width 100%
		height 100%
		background rgba(0, 0, 0, 0.1)
		opacity 0

	> .popover
		position absolute
		z-index 10001
		background #fff
		border 1px solid $border-color
		border-radius 4px
		box-shadow 0 3px 12px rgba(27, 31, 35, 0.15)
		transform scale(0.5)
		opacity 0

		$balloon-size = 16px

		&:not(.compact)
			margin-top $balloon-size
			transform-origin center -($balloon-size)

			&:before
				content ""
				display block
				position absolute
				top -($balloon-size * 2)
				left s('calc(50% - %s)', $balloon-size)
				border-top solid $balloon-size transparent
				border-left solid $balloon-size transparent
				border-right solid $balloon-size transparent
				border-bottom solid $balloon-size $border-color

			&:after
				content ""
				display block
				position absolute
				top -($balloon-size * 2) + 1.5px
				left s('calc(50% - %s)', $balloon-size)
				border-top solid $balloon-size transparent
				border-left solid $balloon-size transparent
				border-right solid $balloon-size transparent
				border-bottom solid $balloon-size #fff

		> button
			display block

</style>