enhance(frontend): 投稿フォームのヒントを追加 (#16712)

* wip

* wip

* Update MkSpot.vue

* Update MkPostForm.vue

* wip

* wip

* Update CHANGELOG.md

4 files changed, 264 insertions, 3 deletions

diff --git a/packages/frontend/src/components/MkPostForm.vue b/packages/frontend/src/components/MkPostForm.vue
index 664ff2d469..140b4aa887 100644
--- a/packages/frontend/src/components/MkPostForm.vue
+++ b/packages/frontend/src/components/MkPostForm.vue
@@ -14,7 +14,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 	<header :class="$style.header">
 		<div :class="$style.headerLeft">
 			<button v-if="!fixed" :class="$style.cancel" class="_button" @click="cancel"><i class="ti ti-x"></i></button>
-			<button v-click-anime v-tooltip="i18n.ts.account" :class="$style.account" class="_button" @click="openAccountMenu">
+			<button ref="accountMenuEl" v-click-anime v-tooltip="i18n.ts.account" :class="$style.account" class="_button" @click="openAccountMenu">
 				<img :class="$style.avatar" :src="(postAccount ?? $i).avatarUrl" style="border-radius: 100%;"/>
 			</button>
 		</div>
@@ -37,7 +37,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 				<span v-else><i class="ti ti-rocket-off"></i></span>
 			</button>
 			<button ref="otherSettingsButton" v-tooltip="i18n.ts.other" class="_button" :class="$style.headerRightItem" @click="showOtherSettings"><i class="ti ti-dots"></i></button>
-			<button v-click-anime class="_button" :class="$style.submit" :disabled="!canPost" data-cy-open-post-form-submit @click="post">
+			<button ref="submitButtonEl" v-click-anime class="_button" :class="$style.submit" :disabled="!canPost" data-cy-open-post-form-submit @click="post">
 				<div :class="$style.submitInner">
 					<template v-if="posted"></template>
 					<template v-else-if="posting"><MkEllipsis/></template>
@@ -60,6 +60,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 			<button class="_buttonPrimary" style="padding: 4px; border-radius: 8px;" @click="addVisibleUser"><i class="ti ti-plus ti-fw"></i></button>
 		</div>
 	</div>
+	<MkInfo v-if="!store.r.tips.value.postForm" :class="$style.showHowToUse"><button class="_textButton" @click="showTour">{{ i18n.ts._postForm.showHowToUse }}</button></MkInfo>
 	<MkInfo v-if="scheduledAt != null" :class="$style.scheduledAt">
 		<I18n :src="i18n.ts.scheduleToPostOnX" tag="span">
 			<template #x>
@@ -89,7 +90,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 	<MkNotePreview v-if="showPreview" :class="$style.preview" :text="text" :files="files" :poll="poll ?? undefined" :useCw="useCw" :cw="cw" :user="postAccount ?? $i"/>
 	<div v-if="showingOptions" style="padding: 8px 16px;">
 	</div>
-	<footer :class="$style.footer">
+	<footer ref="footerEl" :class="$style.footer">
 		<div :class="$style.footerLeft">
 			<button v-tooltip="i18n.ts.attachFile + ' (' + i18n.ts.upload + ')'" class="_button" :class="$style.footerButton" @click="chooseFileFromPc"><i class="ti ti-photo-plus"></i></button>
 			<button v-tooltip="i18n.ts.attachFile + ' (' + i18n.ts.fromDrive + ')'" class="_button" :class="$style.footerButton" @click="chooseFileFromDrive"><i class="ti ti-cloud-download"></i></button>
@@ -153,6 +154,8 @@ import { DI } from '@/di.js';
 import { globalEvents } from '@/events.js';
 import { checkDragDataType, getDragData } from '@/drag-and-drop.js';
 import { useUploader } from '@/composables/use-uploader.js';
+import { startTour } from '@/utility/tour.js';
+import { closeTip } from '@/tips.js';
 
 const $i = ensureSignin();
 
@@ -186,6 +189,9 @@ const cwInputEl = useTemplateRef('cwInputEl');
 const hashtagsInputEl = useTemplateRef('hashtagsInputEl');
 const visibilityButton = useTemplateRef('visibilityButton');
 const otherSettingsButton = useTemplateRef('otherSettingsButton');
+const accountMenuEl = useTemplateRef('accountMenuEl');
+const footerEl = useTemplateRef('footerEl');
+const submitButtonEl = useTemplateRef('submitButtonEl');
 
 const posting = ref(false);
 const posted = ref(false);
@@ -1285,6 +1291,45 @@ function cancelSchedule() {
 	scheduledAt.value = null;
 }
 
+function showTour() {
+	if (textareaEl.value == null ||
+		footerEl.value == null ||
+		accountMenuEl.value == null ||
+		visibilityButton.value == null ||
+		otherSettingsButton.value == null ||
+		submitButtonEl.value == null) {
+		return;
+	}
+
+	startTour([{
+		element: textareaEl.value,
+		title: i18n.ts._postForm._howToUse.content_title,
+		description: i18n.ts._postForm._howToUse.content_description,
+	}, {
+		element: footerEl.value,
+		title: i18n.ts._postForm._howToUse.toolbar_title,
+		description: i18n.ts._postForm._howToUse.toolbar_description,
+	}, {
+		element: accountMenuEl.value,
+		title: i18n.ts._postForm._howToUse.account_title,
+		description: i18n.ts._postForm._howToUse.account_description,
+	}, {
+		element: visibilityButton.value,
+		title: i18n.ts._postForm._howToUse.visibility_title,
+		description: i18n.ts._postForm._howToUse.visibility_description,
+	}, {
+		element: otherSettingsButton.value,
+		title: i18n.ts._postForm._howToUse.menu_title,
+		description: i18n.ts._postForm._howToUse.menu_description,
+	}, {
+		element: submitButtonEl.value,
+		title: i18n.ts._postForm._howToUse.submit_title,
+		description: i18n.ts._postForm._howToUse.submit_description,
+	}]).then(() => {
+		closeTip('postForm');
+	});
+}
+
 onMounted(() => {
 	if (props.autofocus) {
 		focus();
@@ -1414,6 +1459,7 @@ defineExpose({
 }
 
 .avatar {
+	display: block;
 	width: 28px;
 	height: 28px;
 	margin: auto;
@@ -1575,6 +1621,10 @@ html[data-color-scheme=light] .preview {
 	margin: 0 20px 16px 20px;
 }
 
+.showHowToUse {
+	margin: 0 20px 16px 20px;
+}
+
 .cw,
 .hashtags,
 .text {
diff --git a/packages/frontend/src/components/MkSpot.vue b/packages/frontend/src/components/MkSpot.vue
new file mode 100644
index 0000000000..07699644aa
--- /dev/null
+++ b/packages/frontend/src/components/MkSpot.vue
@@ -0,0 +1,161 @@
+<!--
+SPDX-FileCopyrightText: syuilo and misskey-project
+SPDX-License-Identifier: AGPL-3.0-only
+-->
+
+<template>
+<div ref="rootEl" :class="$style.root" :style="{ zIndex }">
+	<div :class="[$style.bg]"></div>
+	<div ref="spotEl" :class="$style.spot"></div>
+	<div ref="bodyEl" :class="$style.body" class="_panel _shadow">
+		<div class="_gaps_s">
+			<div><b>{{ title }}</b></div>
+			<div>{{ description }}</div>
+			<div class="_buttons">
+				<MkButton v-if="hasPrev" small @click="prev"><i class="ti ti-arrow-left"></i> {{ i18n.ts.goBack }}</MkButton>
+				<MkButton v-if="hasNext" small primary @click="next">{{ i18n.ts.next }} <i class="ti ti-arrow-right"></i></MkButton>
+				<MkButton v-else small primary @click="next">{{ i18n.ts.done }} <i class="ti ti-check"></i></MkButton>
+			</div>
+		</div>
+	</div>
+</div>
+</template>
+
+<script lang="ts" setup>
+import { nextTick, onMounted, onUnmounted, ref, useTemplateRef } from 'vue';
+import { calcPopupPosition } from '@/utility/popup-position.js';
+import * as os from '@/os.js';
+import MkButton from '@/components/MkButton.vue';
+import { i18n } from '@/i18n.js';
+
+const props = withDefaults(defineProps<{
+	title: string;
+	description: string;
+	anchorElement?: HTMLElement;
+	x?: number;
+	y?: number;
+	direction?: 'top' | 'bottom' | 'right' | 'left';
+	hasPrev: boolean;
+	hasNext: boolean;
+}>(), {
+	direction: 'top',
+});
+
+const emit = defineEmits<{
+	(prev: 'prev'): void;
+	(next: 'next'): void;
+}>();
+
+function prev() {
+	emit('prev');
+}
+
+function next() {
+	emit('next');
+}
+
+const rootEl = useTemplateRef('rootEl');
+const bodyEl = useTemplateRef('bodyEl');
+const spotEl = useTemplateRef('spotEl');
+const zIndex = os.claimZIndex('high');
+const spotX = ref(0);
+const spotY = ref(0);
+const spotWidth = ref(0);
+const spotHeight = ref(0);
+
+function setPosition() {
+	if (spotEl.value == null) return;
+	if (bodyEl.value == null) return;
+	if (props.anchorElement == null) return;
+
+	const rect = props.anchorElement.getBoundingClientRect();
+	spotX.value = rect.left;
+	spotY.value = rect.top;
+	spotWidth.value = rect.width;
+	spotHeight.value = rect.height;
+
+	const data = calcPopupPosition(bodyEl.value, {
+		anchorElement: props.anchorElement,
+		direction: props.direction,
+		align: 'center',
+		innerMargin: 16,
+		x: props.x,
+		y: props.y,
+	});
+
+	bodyEl.value.style.transformOrigin = data.transformOrigin;
+	bodyEl.value.style.left = data.left + 'px';
+	bodyEl.value.style.top = data.top + 'px';
+}
+
+let loopHandler;
+
+onMounted(() => {
+	nextTick(() => {
+		setPosition();
+
+		const loop = () => {
+			setPosition();
+			loopHandler = window.requestAnimationFrame(loop);
+		};
+
+		loop();
+	});
+});
+
+onUnmounted(() => {
+	window.cancelAnimationFrame(loopHandler);
+});
+</script>
+
+<style lang="scss" module>
+.root {
+	position: absolute;
+}
+
+.bg {
+	position: fixed;
+	top: 0;
+	left: 0;
+	width: 100%;
+	height: 100%;
+}
+
+.spot {
+	--x: v-bind("spotX + 'px'");
+	--y: v-bind("spotY + 'px'");
+	--width: v-bind("spotWidth + 'px'");
+	--height: v-bind("spotHeight + 'px'");
+	--padding: 8px;
+	position: absolute;
+	left: calc(var(--x) - var(--padding));
+	top: calc(var(--y) - var(--padding));
+	width: calc(var(--width) + var(--padding) * 2);
+	height: calc(var(--height) + var(--padding) * 2);
+	box-sizing: border-box;
+	border: 1px solid transparent;
+	border-radius: 8px;
+	box-shadow: 0 0 0 9999px #000a;
+	transition: left 0.2s ease-out, top 0.2s ease-out, width 0.2s ease-out, height 0.2s ease-out;
+	animation: blink 1s infinite;
+}
+
+.body {
+	position: absolute;
+	padding: 16px 20px;
+	box-sizing: border-box;
+	width: max-content;
+	max-width: min(500px, 100vw);
+}
+
+@keyframes blink {
+	0%, 100% {
+		background: color(from var(--MI_THEME-accent) srgb r g b / 0.1);
+		border: 1px solid color(from var(--MI_THEME-accent) srgb r g b / 0.75);
+	}
+	50% {
+		background: transparent;
+		border: 1px solid transparent;
+	}
+}
+</style>
diff --git a/packages/frontend/src/tips.ts b/packages/frontend/src/tips.ts
index 7218f4c19a..8a58e2aa63 100644
--- a/packages/frontend/src/tips.ts
+++ b/packages/frontend/src/tips.ts
@@ -11,6 +11,7 @@ export const TIPS = [
 	'postFormUploader',
 	'clips',
 	'userLists',
+	'postForm',
 	'tl.home',
 	'tl.local',
 	'tl.social',
diff --git a/packages/frontend/src/utility/tour.ts b/packages/frontend/src/utility/tour.ts
new file mode 100644
index 0000000000..8ab3474ddc
--- /dev/null
+++ b/packages/frontend/src/utility/tour.ts
@@ -0,0 +1,49 @@
+/*
+ * SPDX-FileCopyrightText: syuilo and misskey-project
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+import { computed, ref, shallowRef, watch } from 'vue';
+import * as os from '@/os.js';
+
+type TourStep = {
+	title: string;
+	description: string;
+	element: HTMLElement;
+};
+
+export function startTour(steps: TourStep[]) {
+	return new Promise<void>(async (resolve) => {
+		const currentStepIndex = ref(0);
+		const titleRef = ref(steps[0].title);
+		const descriptionRef = ref(steps[0].description);
+		const anchorElementRef = shallowRef<HTMLElement>(steps[0].element);
+
+		watch(currentStepIndex, (newIndex) => {
+			const step = steps[newIndex];
+			titleRef.value = step.title;
+			descriptionRef.value = step.description;
+			anchorElementRef.value = step.element;
+		});
+
+		const { dispose } = os.popup(await import('@/components/MkSpot.vue').then(x => x.default), {
+			title: titleRef,
+			description: descriptionRef,
+			anchorElement: anchorElementRef,
+			hasPrev: computed(() => currentStepIndex.value > 0),
+			hasNext: computed(() => currentStepIndex.value < steps.length - 1),
+		}, {
+			next: () => {
+				if (currentStepIndex.value >= steps.length - 1) {
+					dispose();
+					resolve();
+					return;
+				}
+				currentStepIndex.value++;
+			},
+			prev: () => {
+				currentStepIndex.value--;
+			},
+		});
+	});
+}