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Typescript: ImageUtils

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This commit is contained in:
David Baker 2020-10-30 17:50:37 +00:00
parent 39e682afed
commit 8b7ed7ad1a
2 changed files with 3 additions and 6 deletions
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1
.eslintignore.errorfiles
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@ -1,6 +1,5 @@
# autogenerated file: run scripts/generate-eslint-error-ignore-file to update.
src/ImageUtils.js
src/Markdown.js
src/Rooms.js
src/Unread.js

8
src/ImageUtils.js → src/ImageUtils.ts
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@ -1,5 +1,5 @@
/*
Copyright 2015, 2016 OpenMarket Ltd
Copyright 2015, 2016, 2020 Copyright 2020 The Matrix.org Foundation C.I.C.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
@ -14,8 +14,6 @@ See the License for the specific language governing permissions and
limitations under the License.
*/
'use strict';
/**
* Returns the actual height that an image of dimensions (fullWidth, fullHeight)
* will occupy if resized to fit inside a thumbnail bounding box of size
@ -30,11 +28,11 @@ limitations under the License.
* consume in the timeline, when performing scroll offset calcuations
* (e.g. scroll locking)
*/
export function thumbHeight(fullWidth, fullHeight, thumbWidth, thumbHeight) {
export function thumbHeight(fullWidth: number, fullHeight: number, thumbWidth: number, thumbHeight: number) {
if (!fullWidth || !fullHeight) {
// Cannot calculate thumbnail height for image: missing w/h in metadata. We can't even
// log this because it's spammy
return undefined;
return null;
}
if (fullWidth < thumbWidth && fullHeight < thumbHeight) {
// no scaling needs to be applied