mirror of
https://github.com/element-hq/element-web.git
synced 2024-12-16 04:21:32 +03:00
13f28e53e1
* Send a thumbnail when sending a m.image * Use the 'thumbnail_file' when displaying encrypted images * Whitespace * Generate thumbnails for m.video * Fix docstring, remove unused vars, use const * Don't change the upload promise behaviour * Polyfill for Canvas.toBlob to support older browsers * Lowercase for integer types in jsdoc
210 lines
7 KiB
JavaScript
210 lines
7 KiB
JavaScript
/*
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Copyright 2015, 2016 OpenMarket Ltd
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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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'use strict';
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import React from 'react';
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import MFileBody from './MFileBody';
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import MatrixClientPeg from '../../../MatrixClientPeg';
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import ImageUtils from '../../../ImageUtils';
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import Modal from '../../../Modal';
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import sdk from '../../../index';
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import dis from '../../../dispatcher';
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import {decryptFile} from '../../../utils/DecryptFile';
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import q from 'q';
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module.exports = React.createClass({
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displayName: 'MImageBody',
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propTypes: {
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/* the MatrixEvent to show */
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mxEvent: React.PropTypes.object.isRequired,
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},
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getInitialState: function() {
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return {
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decryptedUrl: null,
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decryptedThumbnailUrl: null,
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};
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},
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onClick: function onClick(ev) {
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if (ev.button == 0 && !ev.metaKey) {
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ev.preventDefault();
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const content = this.props.mxEvent.getContent();
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const httpUrl = this._getContentUrl();
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const ImageView = sdk.getComponent("elements.ImageView");
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const params = {
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src: httpUrl,
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mxEvent: this.props.mxEvent
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};
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if (content.info) {
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params.width = content.info.w;
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params.height = content.info.h;
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params.fileSize = content.info.size;
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}
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Modal.createDialog(ImageView, params, "mx_Dialog_lightbox");
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}
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},
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_isGif: function() {
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const content = this.props.mxEvent.getContent();
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return (content && content.info && content.info.mimetype === "image/gif");
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},
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onImageEnter: function(e) {
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if (!this._isGif()) {
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return;
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}
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var imgElement = e.target;
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imgElement.src = this._getContentUrl();
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},
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onImageLeave: function(e) {
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if (!this._isGif()) {
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return;
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}
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var imgElement = e.target;
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imgElement.src = this._getThumbUrl();
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},
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_getContentUrl: function() {
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const content = this.props.mxEvent.getContent();
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if (content.file !== undefined) {
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return this.state.decryptedUrl;
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} else {
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return MatrixClientPeg.get().mxcUrlToHttp(content.url);
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}
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},
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_getThumbUrl: function() {
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const content = this.props.mxEvent.getContent();
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if (content.file !== undefined) {
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if (this.state.decryptedThumbnailUrl) {
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return this.state.decryptedThumbnailUrl;
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}
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return this.state.decryptedUrl;
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} else {
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return MatrixClientPeg.get().mxcUrlToHttp(content.url, 800, 600);
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}
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},
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componentDidMount: function() {
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this.dispatcherRef = dis.register(this.onAction);
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this.fixupHeight();
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const content = this.props.mxEvent.getContent();
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if (content.file !== undefined && this.state.decryptedUrl === null) {
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var thumbnailPromise = q(null);
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if (content.info.thumbnail_file) {
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thumbnailPromise = decryptFile(
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content.info.thumbnail_file
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);
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}
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thumbnailPromise.then((thumbnailUrl) => {
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decryptFile(content.file).then((contentUrl) => {
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this.setState({
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decryptedUrl: contentUrl,
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decryptedThumbnailUrl: thumbnailUrl,
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});
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});
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}).catch((err) => {
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console.warn("Unable to decrypt attachment: ", err)
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// Set a placeholder image when we can't decrypt the image.
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this.refs.image.src = "img/warning.svg";
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}).done();
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}
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},
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componentWillUnmount: function() {
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dis.unregister(this.dispatcherRef);
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},
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onAction: function(payload) {
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if (payload.action === "timeline_resize") {
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this.fixupHeight();
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}
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},
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fixupHeight: function() {
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if (!this.refs.image) {
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console.warn("Refusing to fix up height on MImageBody with no image element");
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return;
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}
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const content = this.props.mxEvent.getContent();
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const timelineWidth = this.refs.body.offsetWidth;
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const maxHeight = 600; // let images take up as much width as they can so long as the height doesn't exceed 600px.
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// the alternative here would be 600*timelineWidth/800; to scale them down to fit inside a 4:3 bounding box
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//console.log("trying to fit image into timelineWidth of " + this.refs.body.offsetWidth + " or " + this.refs.body.clientWidth);
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var thumbHeight = null;
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if (content.info) {
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thumbHeight = ImageUtils.thumbHeight(content.info.w, content.info.h, timelineWidth, maxHeight);
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}
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this.refs.image.style.height = thumbHeight + "px";
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// console.log("Image height now", thumbHeight);
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},
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render: function() {
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const TintableSvg = sdk.getComponent("elements.TintableSvg");
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const content = this.props.mxEvent.getContent();
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if (content.file !== undefined && this.state.decryptedUrl === null) {
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// Need to decrypt the attachment
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// The attachment is decrypted in componentDidMount.
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// For now add an img tag with a spinner.
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return (
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<span className="mx_MImageBody" ref="body">
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<img className="mx_MImageBody_thumbnail" src="img/spinner.gif" ref="image"
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alt={content.body} />
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</span>
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);
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}
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const contentUrl = this._getContentUrl();
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const thumbUrl = this._getThumbUrl();
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if (thumbUrl) {
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return (
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<span className="mx_MImageBody" ref="body">
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<a href={contentUrl} onClick={ this.onClick }>
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<img className="mx_MImageBody_thumbnail" src={thumbUrl} ref="image"
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alt={content.body}
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onMouseEnter={this.onImageEnter}
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onMouseLeave={this.onImageLeave} />
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</a>
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<MFileBody {...this.props} decryptedUrl={this.state.decryptedUrl} />
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</span>
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);
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} else if (content.body) {
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return (
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<span className="mx_MImageBody">
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Image '{content.body}' cannot be displayed.
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</span>
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);
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} else {
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return (
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<span className="mx_MImageBody">
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This image cannot be displayed.
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</span>
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);
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}
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},
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});
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