From bc5aef846b2b3e446541b7db9afed47ea84694bd Mon Sep 17 00:00:00 2001
From: かっこかり <67428053+kakkokari-gtyih@users.noreply.github.com>
Date: Tue, 13 Jan 2026 15:28:54 +0900
Subject: enhance(frontend):
 画面幅が広いときはメディアを横並びで表示できるようにするオプションを追加
 (#16946)
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* enhance(frontend): 画面幅が広いときはメディアを横並びで表示できるようにするオプションを追加

* Update Changelog

* Update CHANGELOG.md
---
 CHANGELOG.md                                        |  1 +
 locales/ja-JP.yml                                   |  1 +
 packages/frontend/src/components/MkMediaList.vue    | 21 ++++++++++++++++++++-
 packages/frontend/src/components/MkMediaVideo.vue   | 19 ++++++++++++++++++-
 .../frontend/src/pages/settings/preferences.vue     |  9 +++++++++
 packages/frontend/src/preferences/def.ts            |  3 +++
 packages/i18n/src/autogen/locale.ts                 |  4 ++++
 7 files changed, 56 insertions(+), 2 deletions(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index a51ec574ae..6258805f48 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -13,6 +13,7 @@
 - Enhance: ドライブのファイル一覧で自動でもっと見るを利用可能に
 - Enhance: ウィジェットの表示設定をプレビューを見ながら行えるように
 - Enhance: ウィジェットの設定項目のラベルの多言語対応
+- Enhance: 画面幅が広いときにメディアを横並びで表示できるようにするオプションを追加
 - Enhance: パフォーマンスの向上
 - Fix: ドライブクリーナーでファイルを削除しても画面に反映されない問題を修正 #16061
 - Fix: 非ログイン時にログインを求めるダイアログが表示された後にダイアログのぼかしが解除されず操作不能になることがある問題を修正
diff --git a/locales/ja-JP.yml b/locales/ja-JP.yml
index e1464151e7..45d2efdf35 100644
--- a/locales/ja-JP.yml
+++ b/locales/ja-JP.yml
@@ -543,6 +543,7 @@ regenerate: "再生成"
 fontSize: "フォントサイズ"
 mediaListWithOneImageAppearance: "画像が1枚のみのメディアリストの高さ"
 limitTo: "{x}を上限に"
+showMediaListByGridInWideArea: "画面幅が広いときはメディアリストを横並びで表示する"
 noFollowRequests: "フォロー申請はありません"
 openImageInNewTab: "画像を新しいタブで開く"
 dashboard: "ダッシュボード"
diff --git a/packages/frontend/src/components/MkMediaList.vue b/packages/frontend/src/components/MkMediaList.vue
index b070bfd892..9090e74bb6 100644
--- a/packages/frontend/src/components/MkMediaList.vue
+++ b/packages/frontend/src/components/MkMediaList.vue
@@ -4,13 +4,14 @@ SPDX-License-Identifier: AGPL-3.0-only
 -->
 
 <template>
-<div>
+<div :class="$style.root">
 	<XBanner v-for="media in mediaList.filter(media => !previewable(media))" :key="media.id" :media="media"/>
 	<div v-if="mediaList.filter(media => previewable(media)).length > 0" :class="$style.container">
 		<div
 			ref="gallery"
 			:class="[
 				$style.medias,
+				...(prefer.s.showMediaListByGridInWideArea ? [$style.gridInWideArea] : []),
 				count === 1 ? [$style.n1, {
 					[$style.n116_9]: prefer.s.mediaListWithOneImageAppearance === '16_9',
 					[$style.n11_1]: prefer.s.mediaListWithOneImageAppearance === '1_1',
@@ -230,6 +231,10 @@ defineExpose({
 </script>
 
 <style lang="scss" module>
+.root {
+	container-type: inline-size;
+}
+
 .container {
 	position: relative;
 	width: 100%;
@@ -313,6 +318,20 @@ defineExpose({
 	border-radius: 8px;
 }
 
+@container (min-width: 500px) {
+	.medias.gridInWideArea {
+		display: grid;
+		aspect-ratio: auto;
+		grid-template-columns: repeat(4, 1fr);
+		grid-template-rows: auto;
+		grid-gap: 8px;
+
+		> .media {
+			aspect-ratio: 1 / 1;
+		}
+	}
+}
+
 :global(.pswp) {
 	--pswp-root-z-index: var(--mk-pswp-root-z-index, 2000700) !important;
 	--pswp-bg: var(--MI_THEME-modalBg) !important;
diff --git a/packages/frontend/src/components/MkMediaVideo.vue b/packages/frontend/src/components/MkMediaVideo.vue
index aac52bfa26..4d06e42c05 100644
--- a/packages/frontend/src/components/MkMediaVideo.vue
+++ b/packages/frontend/src/components/MkMediaVideo.vue
@@ -705,7 +705,7 @@ onDeactivated(() => {
 	.controlButton {
 		padding: 6px;
 		border-radius: calc(var(--MI-radius) / 2);
-		transition: background-color .2s ease-in-out;
+		transition: background-color .15s ease;
 		font-size: 1.05rem;
 
 		&:hover {
@@ -760,4 +760,21 @@ onDeactivated(() => {
 		}
 	}
 }
+
+@container (max-width: 300px) {
+	.videoControls {
+		grid-template-areas:
+			"left . right"
+			"seekbar seekbar seekbar";
+		grid-template-columns: auto 1fr auto;
+	}
+
+	.controlsTime {
+		display: none;
+	}
+
+	.controlsVolume {
+		display: none;
+	}
+}
 </style>
diff --git a/packages/frontend/src/pages/settings/preferences.vue b/packages/frontend/src/pages/settings/preferences.vue
index 76b84795f6..13f76fac98 100644
--- a/packages/frontend/src/pages/settings/preferences.vue
+++ b/packages/frontend/src/pages/settings/preferences.vue
@@ -269,6 +269,14 @@ SPDX-License-Identifier: AGPL-3.0-only
 								</MkPreferenceContainer>
 							</SearchMarker>
 
+							<SearchMarker :keywords="['attachment', 'image', 'photo', 'picture', 'media', 'thumbnail', 'grid', 'wide', 'area']">
+								<MkPreferenceContainer k="showMediaListByGridInWideArea">
+									<MkSwitch v-model="showMediaListByGridInWideArea">
+										<template #label><SearchLabel>{{ i18n.ts.showMediaListByGridInWideArea }}</SearchLabel></template>
+									</MkSwitch>
+								</MkPreferenceContainer>
+							</SearchMarker>
+
 							<SearchMarker :keywords="['ticker', 'information', 'label', 'instance', 'server', 'host', 'federation']">
 								<MkPreferenceContainer k="instanceTicker">
 									<MkSelect
@@ -890,6 +898,7 @@ const notificationStackAxis = prefer.model('notificationStackAxis');
 const instanceTicker = prefer.model('instanceTicker');
 const highlightSensitiveMedia = prefer.model('highlightSensitiveMedia');
 const mediaListWithOneImageAppearance = prefer.model('mediaListWithOneImageAppearance');
+const showMediaListByGridInWideArea = prefer.model('showMediaListByGridInWideArea');
 const reactionsDisplaySize = prefer.model('reactionsDisplaySize');
 const limitWidthOfReaction = prefer.model('limitWidthOfReaction');
 const squareAvatars = prefer.model('squareAvatars');
diff --git a/packages/frontend/src/preferences/def.ts b/packages/frontend/src/preferences/def.ts
index 8d1d33977d..62e888e023 100644
--- a/packages/frontend/src/preferences/def.ts
+++ b/packages/frontend/src/preferences/def.ts
@@ -320,6 +320,9 @@ export const PREF_DEF = definePreferences({
 	mediaListWithOneImageAppearance: {
 		default: 'expand' as 'expand' | '16_9' | '1_1' | '2_3',
 	},
+	showMediaListByGridInWideArea: {
+		default: false,
+	},
 	notificationPosition: {
 		default: 'rightBottom' as 'leftTop' | 'leftBottom' | 'rightTop' | 'rightBottom',
 	},
diff --git a/packages/i18n/src/autogen/locale.ts b/packages/i18n/src/autogen/locale.ts
index ca253a5c97..f814f3ecc2 100644
--- a/packages/i18n/src/autogen/locale.ts
+++ b/packages/i18n/src/autogen/locale.ts
@@ -2184,6 +2184,10 @@ export interface Locale extends ILocale {
      * {x}を上限に
      */
     "limitTo": ParameterizedString<"x">;
+    /**
+     * 画面幅が広いときはメディアリストを横並びで表示する
+     */
+    "showMediaListByGridInWideArea": string;
     /**
      * フォロー申請はありません
      */
-- 
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