enhance(frontend): フォロワーへのメッセージ欄を改良 (#14656)

* enhance(frontend): フォロワーへのメッセージ欄を改良

* Update Changelog

packages/frontend/src/components/MkFukidashi.vue

@@ -0,0 +1,100 @@
+<!--
+SPDX-FileCopyrightText: syuilo and other misskey contributors
+SPDX-License-Identifier: AGPL-3.0-only
+-->
+
+<template>
+<div
+	:class="[
+		$style.root,
+		tail === 'left' ? $style.left : $style.right,
+		negativeMargin === true && $style.negativeMergin,
+		shadow === true && $style.shadow,
+	]"
+>
+	<div :class="$style.bg">
+		<svg v-if="tail !== 'none'" :class="$style.tail" version="1.1" viewBox="0 0 14.597 14.58" xmlns="http://www.w3.org/2000/svg">
+			<g transform="translate(-173.71 -87.184)">
+				<path d="m188.19 87.657c-1.469 2.3218-3.9315 3.8312-6.667 4.0865-2.2309-1.7379-4.9781-2.6816-7.8061-2.6815h-5.1e-4v12.702h12.702v-5.1e-4c2e-5 -1.9998-0.47213-3.9713-1.378-5.754 2.0709-1.6834 3.2732-4.2102 3.273-6.8791-6e-5 -0.49375-0.0413-0.98662-0.1235-1.4735z" fill-rule="evenodd" stroke-linecap="round" stroke-linejoin="round" stroke-width=".33225" style="paint-order:stroke fill markers"/>
+			</g>
+		</svg>
+		<div :class="$style.content">
+			<slot></slot>
+		</div>
+	</div>
+</div>
+</template>
+
+<script setup lang="ts">
+withDefaults(defineProps<{
+	tail?: 'left' | 'right' | 'none';
+	negativeMargin?: boolean;
+	shadow?: boolean;
+}>(), {
+	tail: 'right',
+	negativeMargin: false,
+	shadow: false,
+});
+</script>
+
+<style module lang="scss">
+.root {
+	--fukidashi-radius: var(--radius);
+	--fukidashi-bg: var(--panel);
+
+	position: relative;
+	display: inline-block;
+	min-height: calc(var(--fukidashi-radius) * 2);
+	padding-top: calc(var(--fukidashi-radius) * .13);
+
+	&.shadow {
+		filter: drop-shadow(0 4px 32px var(--shadow));
+	}
+
+	&.left {
+		padding-left: calc(var(--fukidashi-radius) * .13);
+
+		&.negativeMergin {
+			margin-left: calc(calc(var(--fukidashi-radius) * .13) * -1);
+		}
+	}
+
+	&.right {
+		padding-right: calc(var(--fukidashi-radius) * .13);
+
+		&.negativeMergin {
+			margin-right: calc(calc(var(--fukidashi-radius) * .13) * -1);
+		}
+	}
+}
+
+.bg {
+	width: 100%;
+	height: 100%;
+	background: var(--fukidashi-bg);
+	border-radius: var(--fukidashi-radius);
+}
+
+.content {
+	position: relative;
+	padding: 8px 12px;
+}
+
+.tail {
+	position: absolute;
+	top: 0;
+	display: block;
+	width: calc(var(--fukidashi-radius) * 1.13);
+	height: auto;
+	fill: var(--fukidashi-bg);
+}
+
+.left .tail {
+	left: 0;
+	transform: rotateY(180deg);
+}
+
+.right .tail {
+	right: 0;
+}
+</style>