860 lines
24 KiB
JavaScript
860 lines
24 KiB
JavaScript
/**
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* Copyright (c) 2015-present, Facebook, Inc.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*
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* @format
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* @flow
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*/
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'use strict';
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var React = require('react');
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var createReactClass = require('create-react-class');
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var ReactNative = require('react-native');
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var {
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ActivityIndicator,
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Image,
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Platform,
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StyleSheet,
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Text,
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View,
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ImageBackground,
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} = ReactNative;
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var base64Icon =
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'data:image/png;base64,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';
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var ImageCapInsetsExample = require('./ImageCapInsetsExample');
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const IMAGE_PREFETCH_URL =
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'http://origami.design/public/images/bird-logo.png?r=1&t=' + Date.now();
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var prefetchTask = Image.prefetch(IMAGE_PREFETCH_URL);
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/* $FlowFixMe(>=0.63.0 site=react_native_fb) This comment suppresses an error
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* found when Flow v0.63 was deployed. To see the error delete this comment and
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* run Flow. */
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var NetworkImageCallbackExample = createReactClass({
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displayName: 'NetworkImageCallbackExample',
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getInitialState: function() {
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return {
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events: [],
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startLoadPrefetched: false,
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mountTime: new Date(),
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};
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},
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UNSAFE_componentWillMount() {
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this.setState({mountTime: new Date()});
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},
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render: function() {
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var {mountTime} = this.state;
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return (
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<View>
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<Image
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source={this.props.source}
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style={[styles.base, {overflow: 'visible'}]}
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onLoadStart={() =>
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this._loadEventFired(`✔ onLoadStart (+${new Date() - mountTime}ms)`)
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}
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onLoad={event => {
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// Currently this image source feature is only available on iOS.
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if (event.nativeEvent.source) {
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const url = event.nativeEvent.source.url;
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this._loadEventFired(
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`✔ onLoad (+${new Date() - mountTime}ms) for URL ${url}`,
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);
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} else {
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this._loadEventFired(`✔ onLoad (+${new Date() - mountTime}ms)`);
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}
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}}
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onLoadEnd={() => {
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this._loadEventFired(`✔ onLoadEnd (+${new Date() - mountTime}ms)`);
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this.setState({startLoadPrefetched: true}, () => {
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prefetchTask.then(
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() => {
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this._loadEventFired(
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`✔ Prefetch OK (+${new Date() - mountTime}ms)`,
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);
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},
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error => {
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this._loadEventFired(
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`✘ Prefetch failed (+${new Date() - mountTime}ms)`,
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);
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},
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);
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});
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}}
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/>
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{this.state.startLoadPrefetched ? (
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<Image
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source={this.props.prefetchedSource}
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style={[styles.base, {overflow: 'visible'}]}
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onLoadStart={() =>
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this._loadEventFired(
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`✔ (prefetched) onLoadStart (+${new Date() - mountTime}ms)`,
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)
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}
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onLoad={event => {
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// Currently this image source feature is only available on iOS.
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if (event.nativeEvent.source) {
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const url = event.nativeEvent.source.url;
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this._loadEventFired(
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`✔ (prefetched) onLoad (+${new Date() -
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mountTime}ms) for URL ${url}`,
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);
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} else {
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this._loadEventFired(
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`✔ (prefetched) onLoad (+${new Date() - mountTime}ms)`,
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);
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}
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}}
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onLoadEnd={() =>
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this._loadEventFired(
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`✔ (prefetched) onLoadEnd (+${new Date() - mountTime}ms)`,
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)
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}
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/>
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) : null}
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<Text style={{marginTop: 20}}>{this.state.events.join('\n')}</Text>
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</View>
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);
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},
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_loadEventFired(event) {
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this.setState(state => {
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return (state.events = [...state.events, event]);
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});
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},
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});
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var NetworkImageExample = createReactClass({
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getInitialState: function() {
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return {
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error: false,
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loading: false,
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progress: 0,
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};
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},
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render: function() {
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var loader = this.state.loading ? (
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<View style={styles.progress}>
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<Text>{this.state.progress}%</Text>
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<ActivityIndicator style={{marginLeft: 5}} />
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</View>
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) : null;
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return this.state.error ? (
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<Text>{this.state.error}</Text>
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) : (
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<ImageBackground
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source={this.props.source}
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style={[styles.base, {overflow: 'visible'}]}
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onLoadStart={e => this.setState({loading: true})}
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onError={e =>
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this.setState({error: e.nativeEvent.error, loading: false})
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}
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onProgress={e =>
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this.setState({
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progress: Math.round(
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100 * e.nativeEvent.loaded / e.nativeEvent.total,
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),
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})
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}
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onLoad={() => this.setState({loading: false, error: false})}>
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{loader}
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</ImageBackground>
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);
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},
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});
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var ImageSizeExample = createReactClass({
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getInitialState: function() {
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return {
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width: 0,
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height: 0,
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};
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},
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componentDidMount: function() {
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Image.getSize(this.props.source.uri, (width, height) => {
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this.setState({width, height});
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});
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},
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render: function() {
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return (
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<View style={{flexDirection: 'row'}}>
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<Image
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style={{
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width: 60,
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height: 60,
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backgroundColor: 'transparent',
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marginRight: 10,
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}}
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source={this.props.source}
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/>
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<Text>
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Actual dimensions:{'\n'}
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Width: {this.state.width}, Height: {this.state.height}
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</Text>
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</View>
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);
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},
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});
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var MultipleSourcesExample = createReactClass({
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getInitialState: function() {
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return {
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width: 30,
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height: 30,
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};
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},
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render: function() {
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return (
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<View>
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<View style={{flexDirection: 'row', justifyContent: 'space-between'}}>
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<Text style={styles.touchableText} onPress={this.decreaseImageSize}>
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Decrease image size
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</Text>
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<Text style={styles.touchableText} onPress={this.increaseImageSize}>
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Increase image size
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</Text>
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</View>
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<Text>
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Container image size: {this.state.width}x{this.state.height}{' '}
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</Text>
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<View style={{height: this.state.height, width: this.state.width}}>
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<Image
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style={{flex: 1}}
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source={[
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{
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uri: 'https://facebook.github.io/react-native/img/favicon.png',
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width: 38,
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height: 38,
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},
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{
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uri: 'https://facebook.github.io/react-native/img/favicon.png',
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width: 76,
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height: 76,
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},
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{
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uri:
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'https://facebook.github.io/react-native/img/opengraph.png',
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width: 400,
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height: 400,
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},
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]}
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/>
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</View>
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</View>
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);
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},
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increaseImageSize: function() {
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if (this.state.width >= 100) {
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return;
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}
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this.setState({
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width: this.state.width + 10,
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height: this.state.height + 10,
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});
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},
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decreaseImageSize: function() {
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if (this.state.width <= 10) {
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return;
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}
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this.setState({
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width: this.state.width - 10,
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height: this.state.height - 10,
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});
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},
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});
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exports.displayName = (undefined: ?string);
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exports.framework = 'React';
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exports.title = '<Image>';
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exports.description =
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'Base component for displaying different types of images.';
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exports.examples = [
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{
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title: 'Plain Network Image',
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description:
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'If the `source` prop `uri` property is prefixed with ' +
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'"http", then it will be downloaded from the network.',
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render: function() {
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return <Image source={fullImage} style={styles.base} />;
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},
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},
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{
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title: 'Plain Static Image',
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description:
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'Static assets should be placed in the source code tree, and ' +
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'required in the same way as JavaScript modules.',
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render: function() {
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return (
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<View style={styles.horizontal}>
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<Image
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source={require('./uie_thumb_normal.png')}
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style={styles.icon}
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/>
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<Image
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source={require('./uie_thumb_selected.png')}
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style={styles.icon}
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/>
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<Image
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source={require('./uie_comment_normal.png')}
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style={styles.icon}
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/>
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<Image
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source={require('./uie_comment_highlighted.png')}
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style={styles.icon}
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/>
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</View>
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);
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},
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},
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{
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title: 'Image Loading Events',
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render: function() {
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return (
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<NetworkImageCallbackExample
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source={{
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uri:
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'http://origami.design/public/images/bird-logo.png?r=1&t=' +
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Date.now(),
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}}
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prefetchedSource={{uri: IMAGE_PREFETCH_URL}}
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/>
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);
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},
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},
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{
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title: 'Error Handler',
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render: function() {
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return (
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<NetworkImageExample
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source={{
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uri: 'https://TYPO_ERROR_facebook.github.io/react/logo-og.png',
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}}
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/>
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);
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},
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platform: 'ios',
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},
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{
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title: 'Image Download Progress',
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render: function() {
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return (
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<NetworkImageExample
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source={{
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uri: 'http://origami.design/public/images/bird-logo.png?r=1',
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}}
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/>
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);
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},
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platform: 'ios',
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},
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{
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title: 'defaultSource',
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description: 'Show a placeholder image when a network image is loading',
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render: function() {
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return (
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<Image
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defaultSource={require('./bunny.png')}
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source={{
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uri: 'https://facebook.github.io/origami/public/images/birds.jpg',
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}}
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style={styles.base}
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/>
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);
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},
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platform: 'ios',
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},
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{
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title: 'Cache Policy',
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description:
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'First image has never been loaded before and is instructed not to load unless in cache.' +
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'Placeholder image from above will stay. Second image is the same but forced to load regardless of' +
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' local cache state.',
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render: function() {
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return (
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<View style={styles.horizontal}>
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<Image
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defaultSource={require('./bunny.png')}
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source={{
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uri: smallImage.uri + '?cacheBust=notinCache' + Date.now(),
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cache: 'only-if-cached',
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}}
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style={styles.base}
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/>
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<Image
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defaultSource={require('./bunny.png')}
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source={{
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uri: smallImage.uri + '?cacheBust=notinCache' + Date.now(),
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cache: 'reload',
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}}
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style={styles.base}
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/>
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</View>
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);
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},
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platform: 'ios',
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},
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{
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title: 'Border Color',
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render: function() {
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return (
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<View style={styles.horizontal}>
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<Image
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source={smallImage}
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style={[
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styles.base,
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styles.background,
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{borderWidth: 3, borderColor: '#f099f0'},
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]}
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/>
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</View>
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);
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},
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},
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{
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title: 'Border Width',
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render: function() {
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return (
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<View style={styles.horizontal}>
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<Image
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source={smallImage}
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style={[
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styles.base,
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styles.background,
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{borderWidth: 5, borderColor: '#f099f0'},
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]}
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/>
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</View>
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);
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},
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},
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{
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title: 'Border Radius',
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render: function() {
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return (
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<View style={styles.horizontal}>
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<Image style={[styles.base, {borderRadius: 5}]} source={fullImage} />
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<Image
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style={[styles.base, styles.leftMargin, {borderRadius: 19}]}
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source={fullImage}
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/>
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</View>
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);
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},
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},
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{
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title: 'Background Color',
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render: function() {
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return (
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<View style={styles.horizontal}>
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<Image source={smallImage} style={styles.base} />
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<Image
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style={[
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styles.base,
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styles.leftMargin,
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{backgroundColor: 'rgba(0, 0, 100, 0.25)'},
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]}
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source={smallImage}
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/>
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<Image
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style={[styles.base, styles.leftMargin, {backgroundColor: 'red'}]}
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source={smallImage}
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/>
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<Image
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style={[styles.base, styles.leftMargin, {backgroundColor: 'black'}]}
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source={smallImage}
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/>
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</View>
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);
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},
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},
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{
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title: 'Opacity',
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render: function() {
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return (
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<View style={styles.horizontal}>
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<Image style={[styles.base, {opacity: 1}]} source={fullImage} />
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<Image
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style={[styles.base, styles.leftMargin, {opacity: 0.8}]}
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source={fullImage}
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/>
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<Image
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style={[styles.base, styles.leftMargin, {opacity: 0.6}]}
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source={fullImage}
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/>
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<Image
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style={[styles.base, styles.leftMargin, {opacity: 0.4}]}
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source={fullImage}
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/>
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<Image
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style={[styles.base, styles.leftMargin, {opacity: 0.2}]}
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source={fullImage}
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/>
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<Image
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style={[styles.base, styles.leftMargin, {opacity: 0}]}
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source={fullImage}
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/>
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</View>
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);
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},
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},
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{
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title: 'Nesting content inside <Image> component',
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render: function() {
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return (
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<View style={{width: 60, height: 60}}>
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<Image
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style={{...StyleSheet.absoluteFillObject}}
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source={fullImage}
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/>
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<Text style={styles.nestedText}>React</Text>
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</View>
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);
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},
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},
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{
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title: 'Nesting content inside <ImageBackground> component',
|
|
render: function() {
|
|
return (
|
|
<ImageBackground
|
|
style={{width: 60, height: 60, backgroundColor: 'transparent'}}
|
|
source={fullImage}>
|
|
<Text style={styles.nestedText}>React</Text>
|
|
</ImageBackground>
|
|
);
|
|
},
|
|
},
|
|
{
|
|
title: 'Tint Color',
|
|
description:
|
|
'The `tintColor` style prop changes all the non-alpha ' +
|
|
'pixels to the tint color.',
|
|
render: function() {
|
|
return (
|
|
<View>
|
|
<View style={styles.horizontal}>
|
|
<Image
|
|
source={require('./uie_thumb_normal.png')}
|
|
style={[styles.icon, {borderRadius: 5, tintColor: '#5ac8fa'}]}
|
|
/>
|
|
<Image
|
|
source={require('./uie_thumb_normal.png')}
|
|
style={[
|
|
styles.icon,
|
|
styles.leftMargin,
|
|
{borderRadius: 5, tintColor: '#4cd964'},
|
|
]}
|
|
/>
|
|
<Image
|
|
source={require('./uie_thumb_normal.png')}
|
|
style={[
|
|
styles.icon,
|
|
styles.leftMargin,
|
|
{borderRadius: 5, tintColor: '#ff2d55'},
|
|
]}
|
|
/>
|
|
<Image
|
|
source={require('./uie_thumb_normal.png')}
|
|
style={[
|
|
styles.icon,
|
|
styles.leftMargin,
|
|
{borderRadius: 5, tintColor: '#8e8e93'},
|
|
]}
|
|
/>
|
|
</View>
|
|
<Text style={styles.sectionText}>
|
|
It also works with downloaded images:
|
|
</Text>
|
|
<View style={styles.horizontal}>
|
|
<Image
|
|
source={smallImage}
|
|
style={[styles.base, {borderRadius: 5, tintColor: '#5ac8fa'}]}
|
|
/>
|
|
<Image
|
|
source={smallImage}
|
|
style={[
|
|
styles.base,
|
|
styles.leftMargin,
|
|
{borderRadius: 5, tintColor: '#4cd964'},
|
|
]}
|
|
/>
|
|
<Image
|
|
source={smallImage}
|
|
style={[
|
|
styles.base,
|
|
styles.leftMargin,
|
|
{borderRadius: 5, tintColor: '#ff2d55'},
|
|
]}
|
|
/>
|
|
<Image
|
|
source={smallImage}
|
|
style={[
|
|
styles.base,
|
|
styles.leftMargin,
|
|
{borderRadius: 5, tintColor: '#8e8e93'},
|
|
]}
|
|
/>
|
|
</View>
|
|
</View>
|
|
);
|
|
},
|
|
},
|
|
{
|
|
title: 'Resize Mode',
|
|
description:
|
|
'The `resizeMode` style prop controls how the image is ' +
|
|
'rendered within the frame.',
|
|
render: function() {
|
|
return (
|
|
<View>
|
|
{[smallImage, fullImage].map((image, index) => {
|
|
return (
|
|
<View key={index}>
|
|
<View style={styles.horizontal}>
|
|
<View>
|
|
<Text style={[styles.resizeModeText]}>Contain</Text>
|
|
<Image
|
|
style={styles.resizeMode}
|
|
resizeMode="contain"
|
|
source={image}
|
|
/>
|
|
</View>
|
|
<View style={styles.leftMargin}>
|
|
<Text style={[styles.resizeModeText]}>Cover</Text>
|
|
<Image
|
|
style={styles.resizeMode}
|
|
resizeMode="cover"
|
|
source={image}
|
|
/>
|
|
</View>
|
|
</View>
|
|
<View style={styles.horizontal}>
|
|
<View>
|
|
<Text style={[styles.resizeModeText]}>Stretch</Text>
|
|
<Image
|
|
style={styles.resizeMode}
|
|
resizeMode="stretch"
|
|
source={image}
|
|
/>
|
|
</View>
|
|
<View style={styles.leftMargin}>
|
|
<Text style={[styles.resizeModeText]}>Repeat</Text>
|
|
<Image
|
|
style={styles.resizeMode}
|
|
resizeMode="repeat"
|
|
source={image}
|
|
/>
|
|
</View>
|
|
<View style={styles.leftMargin}>
|
|
<Text style={[styles.resizeModeText]}>Center</Text>
|
|
<Image
|
|
style={styles.resizeMode}
|
|
resizeMode="center"
|
|
source={image}
|
|
/>
|
|
</View>
|
|
</View>
|
|
</View>
|
|
);
|
|
})}
|
|
</View>
|
|
);
|
|
},
|
|
},
|
|
{
|
|
title: 'Animated GIF',
|
|
render: function() {
|
|
return (
|
|
<Image
|
|
style={styles.gif}
|
|
source={{
|
|
uri:
|
|
'https://38.media.tumblr.com/9e9bd08c6e2d10561dd1fb4197df4c4e/tumblr_mfqekpMktw1rn90umo1_500.gif',
|
|
}}
|
|
/>
|
|
);
|
|
},
|
|
platform: 'ios',
|
|
},
|
|
{
|
|
title: 'Base64 image',
|
|
render: function() {
|
|
return (
|
|
<Image style={styles.base64} source={{uri: base64Icon, scale: 3}} />
|
|
);
|
|
},
|
|
platform: 'ios',
|
|
},
|
|
{
|
|
title: 'Cap Insets',
|
|
description:
|
|
'When the image is resized, the corners of the size specified ' +
|
|
'by capInsets will stay a fixed size, but the center content and ' +
|
|
'borders of the image will be stretched. This is useful for creating ' +
|
|
'resizable rounded buttons, shadows, and other resizable assets.',
|
|
render: function() {
|
|
return <ImageCapInsetsExample />;
|
|
},
|
|
platform: 'ios',
|
|
},
|
|
{
|
|
title: 'Image Size',
|
|
render: function() {
|
|
return <ImageSizeExample source={fullImage} />;
|
|
},
|
|
},
|
|
{
|
|
title: 'MultipleSourcesExample',
|
|
description:
|
|
'The `source` prop allows passing in an array of uris, so that native to choose which image ' +
|
|
'to diplay based on the size of the of the target image',
|
|
render: function() {
|
|
return <MultipleSourcesExample />;
|
|
},
|
|
},
|
|
{
|
|
title: 'Legacy local image',
|
|
description:
|
|
'Images shipped with the native bundle, but not managed ' +
|
|
'by the JS packager',
|
|
render: function() {
|
|
return <Image source={{uri: 'legacy_image', width: 120, height: 120}} />;
|
|
},
|
|
},
|
|
{
|
|
title: 'Bundled images',
|
|
description: 'Images shipped in a separate native bundle',
|
|
render: function() {
|
|
return (
|
|
<View style={{flexDirection: 'row'}}>
|
|
<Image
|
|
source={{
|
|
uri: 'ImageInBundle',
|
|
bundle: 'RNTesterBundle',
|
|
width: 100,
|
|
height: 100,
|
|
}}
|
|
style={{borderColor: 'yellow', borderWidth: 4}}
|
|
/>
|
|
<Image
|
|
source={{
|
|
uri: 'ImageInAssetCatalog',
|
|
bundle: 'RNTesterBundle',
|
|
width: 100,
|
|
height: 100,
|
|
}}
|
|
style={{marginLeft: 10, borderColor: 'blue', borderWidth: 4}}
|
|
/>
|
|
</View>
|
|
);
|
|
},
|
|
platform: 'ios',
|
|
},
|
|
{
|
|
title: 'Blur Radius',
|
|
render: function() {
|
|
return (
|
|
<View style={styles.horizontal}>
|
|
<Image style={[styles.base]} source={fullImage} blurRadius={0} />
|
|
<Image
|
|
style={[styles.base, styles.leftMargin]}
|
|
source={fullImage}
|
|
blurRadius={5}
|
|
/>
|
|
<Image
|
|
style={[styles.base, styles.leftMargin]}
|
|
source={fullImage}
|
|
blurRadius={10}
|
|
/>
|
|
<Image
|
|
style={[styles.base, styles.leftMargin]}
|
|
source={fullImage}
|
|
blurRadius={15}
|
|
/>
|
|
<Image
|
|
style={[styles.base, styles.leftMargin]}
|
|
source={fullImage}
|
|
blurRadius={20}
|
|
/>
|
|
<Image
|
|
style={[styles.base, styles.leftMargin]}
|
|
source={fullImage}
|
|
blurRadius={25}
|
|
/>
|
|
</View>
|
|
);
|
|
},
|
|
},
|
|
];
|
|
|
|
var fullImage = {
|
|
uri: 'https://facebook.github.io/react-native/img/opengraph.png',
|
|
};
|
|
var smallImage = {
|
|
uri: 'https://facebook.github.io/react-native/img/favicon.png',
|
|
};
|
|
|
|
var styles = StyleSheet.create({
|
|
base: {
|
|
width: 38,
|
|
height: 38,
|
|
},
|
|
progress: {
|
|
flex: 1,
|
|
alignItems: 'center',
|
|
flexDirection: 'row',
|
|
width: 100,
|
|
},
|
|
leftMargin: {
|
|
marginLeft: 10,
|
|
},
|
|
background: {
|
|
backgroundColor: '#222222',
|
|
},
|
|
sectionText: {
|
|
marginVertical: 6,
|
|
},
|
|
nestedText: {
|
|
marginLeft: 12,
|
|
marginTop: 20,
|
|
backgroundColor: 'transparent',
|
|
color: 'white',
|
|
},
|
|
resizeMode: {
|
|
width: 90,
|
|
height: 60,
|
|
borderWidth: 0.5,
|
|
borderColor: 'black',
|
|
},
|
|
resizeModeText: {
|
|
fontSize: 11,
|
|
marginBottom: 3,
|
|
},
|
|
icon: {
|
|
width: 15,
|
|
height: 15,
|
|
},
|
|
horizontal: {
|
|
flexDirection: 'row',
|
|
},
|
|
gif: {
|
|
flex: 1,
|
|
height: 200,
|
|
},
|
|
base64: {
|
|
flex: 1,
|
|
height: 50,
|
|
resizeMode: 'contain',
|
|
},
|
|
touchableText: {
|
|
fontWeight: '500',
|
|
color: 'blue',
|
|
},
|
|
});
|