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fluxer_app/src/utils/MediaDimensionConfig.tsx

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+/*
+ * Copyright (C) 2026 Fluxer Contributors
+ *
+ * This file is part of Fluxer.
+ *
+ * Fluxer is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * Fluxer is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with Fluxer. If not, see <https://www.gnu.org/licenses/>.
+ */
+
+import {MessageFlags} from '~/Constants';
+import type {MessageRecord} from '~/records/MessageRecord';
+import AccessibilityStore, {MediaDimensionSize} from '~/stores/AccessibilityStore';
+
+export interface MediaDimensions {
+	maxWidth: number;
+	maxHeight: number;
+}
+
+const DIMENSION_PRESETS = {
+	SMALL: {
+		maxWidth: 400,
+		maxHeight: 300,
+	},
+	LARGE: {
+		maxWidth: 550,
+		maxHeight: 400,
+	},
+} as const;
+
+export const getAttachmentMediaDimensions = (message?: MessageRecord): MediaDimensions => {
+	if (message && (message.flags & MessageFlags.COMPACT_ATTACHMENTS) !== 0) {
+		return DIMENSION_PRESETS.SMALL;
+	}
+
+	const size = AccessibilityStore.attachmentMediaDimensionSize;
+	return size === MediaDimensionSize.SMALL ? DIMENSION_PRESETS.SMALL : DIMENSION_PRESETS.LARGE;
+};
+
+export const getEmbedMediaDimensions = (): MediaDimensions => {
+	const size = AccessibilityStore.embedMediaDimensionSize;
+	return size === MediaDimensionSize.SMALL ? DIMENSION_PRESETS.SMALL : DIMENSION_PRESETS.LARGE;
+};
+
+export const getMosaicMediaDimensions = (message?: MessageRecord): MediaDimensions => {
+	return getAttachmentMediaDimensions(message);
+};