45 lines
1.1 KiB
TypeScript
45 lines
1.1 KiB
TypeScript
// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
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// See LICENSE.txt for license information.
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import type {SharedItem} from '@mattermost/rnshare';
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export function toFileInfo(f: SharedItem): FileInfo {
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return {
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post_id: '',
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user_id: '',
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extension: f.extension,
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mime_type: f.type,
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has_preview_image: (f.width || 0) > 0,
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height: f.height || 0,
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width: f.width || 0,
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name: f.filename || '',
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size: f.size || 0,
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uri: f.value,
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};
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}
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export function imageDimensions(imgHeight: number, imgWidth: number, maxHeight: number, viewportWidth: number) {
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if (!imgHeight || !imgWidth) {
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return {
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height: 0,
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width: 0,
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};
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}
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const widthRatio = imgWidth / imgHeight;
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const heightRatio = imgWidth / imgHeight;
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let height = imgHeight;
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let width = imgWidth;
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if (imgWidth >= viewportWidth) {
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width = viewportWidth;
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height = width * widthRatio;
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}
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if (height > maxHeight) {
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height = maxHeight;
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width = height * heightRatio;
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}
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return {height, width};
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}
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