feat: image cropping (#8808)

* wip

* wip

* wip

3 files changed, 241 insertions, 67 deletions

diff --git a/packages/client/src/components/cropper-dialog.vue b/packages/client/src/components/cropper-dialog.vue
new file mode 100644
index 0000000000..24ae4e87ae
--- /dev/null
+++ b/packages/client/src/components/cropper-dialog.vue
@@ -0,0 +1,171 @@
+<template>
+<XModalWindow
+	ref="dialogEl"
+	:width="800"
+	:height="500"
+	:scroll="false"
+	:with-ok-button="true"
+	@close="cancel()"
+	@ok="ok()"
+	@closed="$emit('closed')"
+>
+	<template #header>{{ $ts.cropImage }}</template>
+	<template #default="{ width, height }">
+		<div class="mk-cropper-dialog" :style="`--vw: ${width}px; --vh: ${height}px;`">
+			<Transition name="fade">
+				<div v-if="loading" class="loading">
+					<MkLoading/>
+				</div>
+			</Transition>
+			<div class="container">
+				<img ref="imgEl" :src="file.url" style="display: none;" @load="onImageLoad">
+			</div>
+		</div>
+	</template>
+</XModalWindow>
+</template>
+
+<script lang="ts" setup>
+import { nextTick, onMounted } from 'vue';
+import * as misskey from 'misskey-js';
+import Cropper from 'cropperjs';
+import tinycolor from 'tinycolor2';
+import XModalWindow from '@/components/ui/modal-window.vue';
+import * as os from '@/os';
+import { $i } from '@/account';
+import { defaultStore } from '@/store';
+import { apiUrl } from '@/config';
+
+const emit = defineEmits<{
+	(ev: 'ok', cropped: misskey.entities.DriveFile): void;
+	(ev: 'cancel'): void;
+	(ev: 'closed'): void;
+}>();
+
+const props = defineProps<{
+	file: misskey.entities.DriveFile;
+	aspectRatio: number;
+}>();
+
+let dialogEl = $ref<InstanceType<typeof XModalWindow>>();
+let imgEl = $ref<HTMLImageElement>();
+let cropper: Cropper | null = null;
+let loading = $ref(true);
+
+const ok = async () => {
+	const promise = new Promise<misskey.entities.DriveFile>(async (res) => {
+		const croppedCanvas = await cropper?.getCropperSelection()?.$toCanvas();
+		croppedCanvas.toBlob(blob => {
+			const formData = new FormData();
+			formData.append('file', blob);
+			formData.append('i', $i.token);
+			if (defaultStore.state.uploadFolder) {
+				formData.append('folderId', defaultStore.state.uploadFolder);
+			}
+
+			fetch(apiUrl + '/drive/files/create', {
+				method: 'POST',
+				body: formData,
+			})
+			.then(response => response.json())
+			.then(f => {
+				res(f);
+			});
+		});
+	});
+
+	os.promiseDialog(promise);
+
+	const f = await promise;
+
+	emit('ok', f);
+	dialogEl.close();
+};
+
+const cancel = () => {
+	emit('cancel');
+	dialogEl.close();
+};
+
+const onImageLoad = () => {
+	loading = false;
+
+	if (cropper) {
+		cropper.getCropperImage()!.$center('contain');
+		cropper.getCropperSelection()!.$center();
+	}
+};
+
+onMounted(() => {
+	cropper = new Cropper(imgEl, {
+	});
+
+	const computedStyle = getComputedStyle(document.documentElement);
+
+	const selection = cropper.getCropperSelection()!;
+	selection.themeColor = tinycolor(computedStyle.getPropertyValue('--accent')).toHexString();
+	selection.aspectRatio = props.aspectRatio;
+	selection.initialAspectRatio = props.aspectRatio;
+	selection.outlined = true;
+
+	window.setTimeout(() => {
+		cropper.getCropperImage()!.$center('contain');
+		selection.$center();
+	}, 100);
+
+	// モーダルオープンアニメーションが終わったあとで再度調整
+	window.setTimeout(() => {
+		cropper.getCropperImage()!.$center('contain');
+		selection.$center();
+	}, 500);
+});
+</script>
+
+<style lang="scss" scoped>
+.fade-enter-active,
+.fade-leave-active {
+	transition: opacity 0.5s ease 0.5s;
+}
+.fade-enter-from,
+.fade-leave-to {
+	opacity: 0;
+}
+
+.mk-cropper-dialog {
+	display: flex;
+	flex-direction: column;
+	width: var(--vw);
+	height: var(--vh);
+	position: relative;
+
+	> .loading {
+		position: absolute;
+		z-index: 10;
+		top: 0;
+		left: 0;
+		width: 100%;
+		height: 100%;
+		display: flex;
+		align-items: center;
+		justify-content: center;
+		-webkit-backdrop-filter: var(--blur, blur(10px));
+		backdrop-filter: var(--blur, blur(10px));
+		background: rgba(0, 0, 0, 0.5);
+	}
+
+	> .container {
+		flex: 1;
+		width: 100%;
+		height: 100%;
+
+		> ::v-deep(cropper-canvas) {
+			width: 100%;
+			height: 100%;
+
+			> cropper-selection > cropper-handle[action="move"] {
+				background: transparent;
+			}
+		}
+	}
+}
+</style>
diff --git a/packages/client/src/components/ui/modal-window.vue b/packages/client/src/components/ui/modal-window.vue
index 6de29c83fa..d2b2ccff7a 100644
--- a/packages/client/src/components/ui/modal-window.vue
+++ b/packages/client/src/components/ui/modal-window.vue
@@ -1,7 +1,7 @@
 <template>
-<MkModal ref="modal" :prefer-type="'dialog'" @click="$emit('click')" @closed="$emit('closed')">
-	<div class="ebkgoccj _window _narrow_" :style="{ width: `${width}px`, height: scroll ? (height ? `${height}px` : null) : (height ? `min(${height}px, 100%)` : '100%') }" @keydown="onKeydown">
-		<div class="header">
+<MkModal ref="modal" :prefer-type="'dialog'" @click="onBgClick" @closed="$emit('closed')">
+	<div ref="rootEl" class="ebkgoccj _window _narrow_" :style="{ width: `${width}px`, height: scroll ? (height ? `${height}px` : null) : (height ? `min(${height}px, 100%)` : '100%') }" @keydown="onKeydown">
+		<div ref="headerEl" class="header">
 			<button v-if="withOkButton" class="_button" @click="$emit('close')"><i class="fas fa-times"></i></button>
 			<span class="title">
 				<slot name="header"></slot>
@@ -11,82 +11,82 @@
 		</div>
 		<div v-if="padding" class="body">
 			<div class="_section">
-				<slot></slot>
+				<slot :width="bodyWidth" :height="bodyHeight"></slot>
 			</div>
 		</div>
 		<div v-else class="body">
-			<slot></slot>
+			<slot :width="bodyWidth" :height="bodyHeight"></slot>
 		</div>
 	</div>
 </MkModal>
 </template>
 
-<script lang="ts">
-import { defineComponent } from 'vue';
+<script lang="ts" setup>
+import { onMounted, onUnmounted } from 'vue';
 import MkModal from './modal.vue';
 
-export default defineComponent({
-	components: {
-		MkModal
-	},
-	props: {
-		withOkButton: {
-			type: Boolean,
-			required: false,
-			default: false
-		},
-		okButtonDisabled: {
-			type: Boolean,
-			required: false,
-			default: false
-		},
-		padding: {
-			type: Boolean,
-			required: false,
-			default: false
-		},
-		width: {
-			type: Number,
-			required: false,
-			default: 400
-		},
-		height: {
-			type: Number,
-			required: false,
-			default: null
-		},
-		canClose: {
-			type: Boolean,
-			required: false,
-			default: true,
-		},
-		scroll: {
-			type: Boolean,
-			required: false,
-			default: true,
-		},
-	},
+const props = withDefaults(defineProps<{
+	withOkButton: boolean;
+	okButtonDisabled: boolean;
+	padding: boolean;
+	width: number;
+	height: number | null;
+	scroll: boolean;
+}>(), {
+	withOkButton: false,
+	okButtonDisabled: false,
+	padding: false,
+	width: 400,
+	height: null,
+	scroll: true,
+});
 
-	emits: ['click', 'close', 'closed', 'ok'],
+const emit = defineEmits<{
+	(event: 'click'): void;
+	(event: 'close'): void;
+	(event: 'closed'): void;
+	(event: 'ok'): void;
+}>();
 
-	data() {
-		return {
-		};
-	},
+let modal = $ref<InstanceType<typeof MkModal>>();
+let rootEl = $ref<HTMLElement>();
+let headerEl = $ref<HTMLElement>();
+let bodyWidth = $ref(0);
+let bodyHeight = $ref(0);
 
-	methods: {
-		close() {
-			this.$refs.modal.close();
-		},
+const close = () => {
+	modal.close();
+};
 
-		onKeydown(evt) {
-			if (evt.which === 27) { // Esc
-				evt.preventDefault();
-				evt.stopPropagation();
-				this.close();
-			}
-		},
+const onBgClick = () => {
+	emit('click');
+};
+
+const onKeydown = (evt) => {
+	if (evt.which === 27) { // Esc
+		evt.preventDefault();
+		evt.stopPropagation();
+		close();
 	}
+};
+
+const ro = new ResizeObserver((entries, observer) => {
+	bodyWidth = rootEl.offsetWidth;
+	bodyHeight = rootEl.offsetHeight - headerEl.offsetHeight;
+});
+
+onMounted(() => {
+	bodyWidth = rootEl.offsetWidth;
+	bodyHeight = rootEl.offsetHeight - headerEl.offsetHeight;
+	ro.observe(rootEl);
+});
+
+onUnmounted(() => {
+	ro.disconnect();
+});
+
+defineExpose({
+	close,
 });
 </script>
 
diff --git a/packages/client/src/components/ui/modal.vue b/packages/client/src/components/ui/modal.vue
index 010262da2f..d6a29ec4b7 100644
--- a/packages/client/src/components/ui/modal.vue
+++ b/packages/client/src/components/ui/modal.vue
@@ -1,5 +1,5 @@
 <template>
-<transition :name="$store.state.animation ? (type === 'drawer') ? 'modal-drawer' : (type === 'popup') ? 'modal-popup' : 'modal' : ''" :duration="$store.state.animation ? 200 : 0" appear @after-leave="emit('closed')" @enter="emit('opening')" @after-enter="childRendered">
+<transition :name="$store.state.animation ? (type === 'drawer') ? 'modal-drawer' : (type === 'popup') ? 'modal-popup' : 'modal' : ''" :duration="$store.state.animation ? 200 : 0" appear @after-leave="emit('closed')" @enter="emit('opening')" @after-enter="onOpened">
 	<div v-show="manualShowing != null ? manualShowing : showing" v-hotkey.global="keymap" class="qzhlnise" :class="{ drawer: type === 'drawer', dialog: type === 'dialog' || type === 'dialog:top', popup: type === 'popup' }" :style="{ zIndex, pointerEvents: (manualShowing != null ? manualShowing : showing) ? 'auto' : 'none', '--transformOrigin': transformOrigin }">
 		<div class="bg _modalBg" :class="{ transparent: transparentBg && (type === 'popup') }" :style="{ zIndex }" @click="onBgClick" @contextmenu.prevent.stop="() => {}"></div>
 		<div ref="content" class="content" :class="{ fixed, top: type === 'dialog:top' }" :style="{ zIndex }" @click.self="onBgClick">
@@ -48,6 +48,7 @@ const props = withDefaults(defineProps<{
 
 const emit = defineEmits<{
 	(ev: 'opening'): void;
+	(ev: 'opened'): void;
 	(ev: 'click'): void;
 	(ev: 'esc'): void;
 	(ev: 'close'): void;
@@ -212,7 +213,9 @@ const align = () => {
 	popover.style.top = top + 'px';
 };
 
-const childRendered = () => {
+const onOpened = () => {
+	emit('opened');
+
 	// モーダルコンテンツにマウスボタンが押され、コンテンツ外でマウスボタンが離されたときにモーダルバックグラウンドクリックと判定させないためにマウスイベントを監視しフラグ管理する
 	const el = content.value!.children[0];
 	el.addEventListener('mousedown', ev => {
@@ -237,7 +240,7 @@ onMounted(() => {
 		await nextTick();
 		
 		align();
-	}, { immediate: true, });
+	}, { immediate: true });
 
 	nextTick(() => {
 		const popover = content.value;