0504a962a1
* MM-22379 & MM-22598 Boost perf by using FastImage cache in favor of ImageCacheManager * Code review
107 lines
2.8 KiB
JavaScript
107 lines
2.8 KiB
JavaScript
// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
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// See LICENSE.txt for license information.
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import React from 'react';
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import PropTypes from 'prop-types';
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import {
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Platform,
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StyleSheet,
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Text,
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} from 'react-native';
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import FastImage from 'react-native-fast-image';
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import CustomPropTypes from 'app/constants/custom_prop_types';
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export default class Emoji extends React.PureComponent {
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static propTypes = {
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/*
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* Emoji text name.
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*/
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emojiName: PropTypes.string.isRequired,
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/*
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* Image URL for the emoji.
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*/
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imageUrl: PropTypes.string.isRequired,
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/*
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* Set if this is a custom emoji.
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*/
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isCustomEmoji: PropTypes.bool.isRequired,
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/*
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* Set to render only the text and no image.
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*/
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displayTextOnly: PropTypes.bool,
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literal: PropTypes.string,
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size: PropTypes.number,
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textStyle: CustomPropTypes.Style,
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unicode: PropTypes.string,
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customEmojiStyle: CustomPropTypes.Style,
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};
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static defaultProps = {
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customEmojis: new Map(),
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literal: '',
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imageUrl: '',
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isCustomEmoji: false,
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};
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render() {
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const {
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customEmojiStyle,
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displayTextOnly,
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imageUrl,
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literal,
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unicode,
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textStyle,
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} = this.props;
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let size = this.props.size;
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let fontSize = size;
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if (!size && textStyle) {
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const flatten = StyleSheet.flatten(textStyle);
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fontSize = flatten.fontSize;
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size = fontSize;
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}
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if (displayTextOnly) {
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return <Text style={textStyle}>{literal}</Text>;
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}
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const width = size;
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const height = size;
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// Android can't change the size of an image after its first render, so
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// force a new image to be rendered when the size changes
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const key = Platform.OS === 'android' ? (`${imageUrl}-${height}-${width}`) : null;
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if (unicode && !imageUrl) {
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const codeArray = unicode.split('-');
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const code = codeArray.reduce((acc, c) => {
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return acc + String.fromCodePoint(parseInt(c, 16));
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}, '');
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return (
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<Text style={[textStyle, {fontSize: size}]}>
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{code}
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</Text>
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);
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}
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if (!imageUrl) {
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return null;
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}
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return (
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<FastImage
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key={key}
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style={[customEmojiStyle, {width, height}]}
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source={{uri: imageUrl}}
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onError={this.onError}
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resizeMode={FastImage.resizeMode.contain}
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/>
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);
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}
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}
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