128 lines
2.9 KiB
JavaScript
128 lines
2.9 KiB
JavaScript
// Copyright 2015-2017 Parity Technologies (UK) Ltd.
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// This file is part of Parity.
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// Parity is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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// Parity is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License
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// along with Parity. If not, see <http://www.gnu.org/licenses/>.
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import GeoPattern from 'geopattern';
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import React, { Component, PropTypes } from 'react';
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import { connect } from 'react-redux';
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const imageCache = {};
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function getBackgroundStyle (_gradient, _seed) {
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const gradient = _gradient || 'rgba(255, 255, 255, 0.25)';
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const seed = _seed || '0';
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let url;
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if (_seed) {
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url = GeoPattern.generate(_seed).toDataUrl();
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} else if (imageCache[seed] && imageCache[seed][gradient]) {
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url = imageCache[seed][gradient];
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} else {
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url = GeoPattern.generate(seed).toDataUrl();
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imageCache[seed] = imageCache[seed] || {};
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imageCache[seed][gradient] = url;
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}
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return {
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background: `linear-gradient(${gradient}, ${gradient}), ${url}`
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};
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}
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class ParityBackground extends Component {
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static propTypes = {
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attachDocument: PropTypes.bool,
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backgroundSeed: PropTypes.string,
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children: PropTypes.node,
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className: PropTypes.string,
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onClick: PropTypes.func,
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style: PropTypes.object
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};
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static defaultProps = {
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style: {}
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};
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state = {
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style: {}
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};
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_seed = null;
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componentWillMount () {
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this.setStyle();
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}
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componentWillReceiveProps (nextProps) {
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this.setStyle(nextProps);
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}
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shouldComponentUpdate (_, nextState) {
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return nextState.style !== this.state.style;
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}
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setStyle (props = this.props) {
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const { seed, gradient, backgroundSeed } = props;
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const _seed = seed || backgroundSeed;
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// Don't update if it's the same seed...
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if (this._seed === _seed) {
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return;
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}
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const style = getBackgroundStyle(gradient, _seed);
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this.setState({ style });
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}
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render () {
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const { attachDocument, children, className, onClick } = this.props;
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const style = {
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...this.state.style,
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...this.props.style
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};
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if (attachDocument) {
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document.documentElement.style.backgroundImage = style.background;
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}
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return (
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<div
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className={ className }
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style={
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attachDocument
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? {}
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: style
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}
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onTouchTap={ onClick }
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>
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{ children }
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</div>
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);
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}
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}
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function mapStateToProps (state) {
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const { backgroundSeed } = state.settings;
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return { backgroundSeed };
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}
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export default connect(
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mapStateToProps,
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null
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)(ParityBackground);
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