add: profile backgrounds

packages/frontend/src/components/MkDrive.file.vue

@@ -22,6 +22,10 @@ SPDX-License-Identifier: AGPL-3.0-only
 			<img :class="$style.labelImg" src="/client-assets/label.svg"/>
 			<p :class="$style.labelText">{{ i18n.ts.banner }}</p>
 		</div>
+		<div v-if="$i?.backgroundId == file.id" :class="[$style.label]">
+			<img :class="$style.labelImg" src="/client-assets/label.svg"/>
+			<p :class="$style.labelText">Background</p>
+		</div>
 		<div v-if="file.isSensitive" :class="[$style.label, $style.red]">
 			<img :class="$style.labelImg" src="/client-assets/label-red.svg"/>
 			<p :class="$style.labelText">{{ i18n.ts.sensitive }}</p>

packages/frontend/src/pages/settings/profile.vue

@@ -10,9 +10,11 @@ SPDX-License-Identifier: AGPL-3.0-only
 			<MkAvatar :class="$style.avatar" :user="$i" @click="changeAvatar"/>
 			<MkButton primary rounded @click="changeAvatar">{{ i18n.ts._profile.changeAvatar }}</MkButton>
 		</div>
+		<MkButton primary rounded :class="$style.backgroundEdit" @click="changeBackground">Change Background</MkButton>
 		<MkButton primary rounded :class="$style.bannerEdit" @click="changeBanner">{{ i18n.ts._profile.changeBanner }}</MkButton>
 	</div>
 
+
 	<MkInput v-model="profile.name" :max="30" manualSave>
 		<template #label>{{ i18n.ts._profile.name }}</template>
 	</MkInput>
@@ -254,6 +256,31 @@ function changeBanner(ev) {
 	});
 }
 
+function changeBackground(ev) {
+	selectFile(ev.currentTarget ?? ev.target, i18n.ts.banner).then(async (file) => {
+		let originalOrCropped = file;
+
+		const { canceled } = await os.confirm({
+			type: 'question',
+			text: i18n.t('cropImageAsk'),
+			okText: i18n.ts.cropYes,
+			cancelText: i18n.ts.cropNo,
+		});
+
+		if (!canceled) {
+			originalOrCropped = await os.cropImage(file, {
+				aspectRatio: 1,
+			});
+		}
+
+		const i = await os.apiWithDialog('i/update', {
+			backgroundId: originalOrCropped.id,
+		});
+		$i.backgroundId = i.backgroundId;
+		$i.backgroundUrl = i.backgroundUrl;
+	});
+}
+
 const headerActions = $computed(() => []);
 
 const headerTabs = $computed(() => []);
@@ -292,6 +319,11 @@ definePageMetadata({
 	top: 16px;
 	right: 16px;
 }
+.backgroundEdit {
+	position: absolute;
+	top: 103px;
+	right: 16px;
+}
 
 .metadataRoot {
 	container-type: inline-size;

packages/frontend/src/pages/user/home.vue

@@ -4,7 +4,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 -->
 
 <template>
-<MkSpacer :contentMax="narrow ? 800 : 1100">
+<MkSpacer :contentMax="narrow ? 800 : 1100" :style="background">
 	<div ref="rootEl" class="ftskorzw" :class="{ wide: !narrow }" style="container-type: inline-size;">
 		<div class="main _gaps">
 			<!-- TODO -->
@@ -236,6 +236,13 @@ if (props.user.listenbrainz) {
 	}
 }
 
+const background = computed(() => {
+	if (props.user.backgroundUrl == null) return {};
+	return {
+		'--backgroundImageStatic': `url('${props.user.backgroundUrl}')`
+	};
+});
+
 watch($$(moderationNote), async () => {
 	await os.api('admin/update-user-note', { userId: props.user.id, text: moderationNote });
 });
@@ -338,6 +345,24 @@ onUnmounted(() => {
 
 <style lang="scss" scoped>
 .ftskorzw {
+	&::before {
+		content: "";
+		position: fixed;
+		inset: 0;
+		background: var(--backgroundImageStatic);
+		background-size: cover;
+		background-position: center;
+		pointer-events: none;
+		filter: blur(8px) opacity(0.6);
+		// Funny CSS schenanigans to make background escape container
+		padding-left: 20px;
+    	margin-left: -20px;
+		padding-right: 20px;
+    	margin-right: -20px;
+		padding-top: 20px;
+    	margin-top: -20px;
+		background-attachment: fixed;
+	}
 
 	> .main {