65 lines
1.8 KiB
JavaScript
65 lines
1.8 KiB
JavaScript
/*
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Copyright 2020 Bruno Windels <bruno@windels.cloud>
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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import {MessageTile} from "./MessageTile.js";
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const MAX_HEIGHT = 300;
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const MAX_WIDTH = 400;
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export class ImageTile extends MessageTile {
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constructor(options, room) {
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super(options);
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this._room = room;
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}
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get thumbnailUrl() {
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const mxcUrl = this._getContent().url;
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return this._room.mxcUrlThumbnail(mxcUrl, this.thumbnailWidth, this.thumbnailHeight, "scale");
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}
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get url() {
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const mxcUrl = this._getContent().url;
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return this._room.mxcUrl(mxcUrl);
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}
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_scaleFactor() {
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const {info} = this._getContent();
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const scaleHeightFactor = MAX_HEIGHT / info.h;
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const scaleWidthFactor = MAX_WIDTH / info.w;
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// take the smallest scale factor, to respect all constraints
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// we should not upscale images, so limit scale factor to 1 upwards
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return Math.min(scaleWidthFactor, scaleHeightFactor, 1);
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}
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get thumbnailWidth() {
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const {info} = this._getContent();
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return Math.round(info.w * this._scaleFactor());
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}
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get thumbnailHeight() {
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const {info} = this._getContent();
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return Math.round(info.h * this._scaleFactor());
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}
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get label() {
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return this._getContent().body;
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}
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get shape() {
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return "image";
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}
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}
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