81 lines
3.0 KiB
React
81 lines
3.0 KiB
React
import React from 'react';
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import { FormattedMessage } from 'react-intl';
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import { REM_SIZE } from '../config.js';
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import { fitImageSize } from '../lib/blob-helpers.js';
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import { bytesToHumanSize } from '../lib/strformat.js';
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export default class ImagePreview extends React.PureComponent {
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constructor(props) {
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super(props);
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this.state = {
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width: 0,
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height: 0
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};
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}
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assignWidth(node) {
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if (node && !this.state.width) {
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const bounds = node.getBoundingClientRect();
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this.setState({
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width: bounds.width | 0,
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height: bounds.height | 0
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});
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}
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}
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render() {
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if (!this.props.content) {
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return null;
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}
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const dim = fitImageSize(this.props.content.width, this.props.content.height,
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this.state.width, this.state.height, false);
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const size = dim ? { width: dim.dstWidth + 'px', height: dim.dstHeight + 'px' } :
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((this.props.content.width > this.props.content.height) ? {width: '100%'} : {height: '100%'});
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size.maxWidth = '100%';
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size.maxHeight = '100%';
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let filename = this.props.content.filename;
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// Averate font aspect ratio is ~0.5; File name takes 1/3 of the viewport width.
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const maxlength = Math.max(((this.state.width / REM_SIZE / 1.5) | 0) - 2, 12);
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if (filename.length > maxlength) {
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filename = filename.slice(0, maxlength/2 - 1) + '...' + filename.slice(1 - maxlength/2);
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}
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const width = this.props.content.width || '-';
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const height = this.props.content.height || '-';
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return (
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<div id="image-preview" onClick={this.props.onClose}>
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<div id="image-preview-caption-panel">
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<a href={this.props.content.url} download={this.props.content.filename}>
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<i className="material-icons">file_download</i> <FormattedMessage
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id="download_action" defaultMessage="download" description="Call to action [download]" />
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</a>
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<a href="#" onClick={(e) => {e.preventDefault(); this.props.onClose();}}><i className="material-icons gray">close</i></a>
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</div>
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<div id="image-preview-container" ref={(node) => this.assignWidth(node)}>
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<img src={this.props.content.url} style={size} />
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</div>
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<div id="image-preview-footer">
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<div>
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<div><b><FormattedMessage id="label_file_name" defaultMessage="File name:"
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description="Label for a file name" /></b></div>
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<div><span title={this.props.content.filename}>{filename ? filename : '-'}</span></div>
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</div>
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<div>
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<div><b><FormattedMessage id="label_content_type" defaultMessage="Content type:"
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description="Label for file content type (mime)" /></b></div>
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<div>{this.props.content.type}</div>
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</div>
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<div>
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<div><b><FormattedMessage id="label_size" defaultMessage="Size:"
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description="Label for file size" /></b></div>
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<div>{width} × {height} px; {bytesToHumanSize(this.props.content.size)}</div>
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</div>
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</div>
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</div>
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);
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}
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};
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