572 lines
17 KiB
JavaScript
572 lines
17 KiB
JavaScript
/**
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* Copyright (c) 2013-present, Facebook, Inc.
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* All rights reserved.
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*
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* This source code is licensed under the BSD-style license found in the
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* LICENSE file in the root directory of this source tree. An additional grant
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* of patent rights can be found in the PATENTS file in the same directory.
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*
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* The examples provided by Facebook are for non-commercial testing and
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* evaluation purposes only.
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*
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* Facebook reserves all rights not expressly granted.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NON INFRINGEMENT. IN NO EVENT SHALL
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* FACEBOOK BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
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* AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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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 ReactNative = require('react-native');
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var {
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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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ActivityIndicatorIOS
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} = ReactNative;
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var base64Icon = 'data:image/png;base64,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';
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var ImageCapInsetsExample = require('./ImageCapInsetsExample');
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const IMAGE_PREFETCH_URL = 'http://facebook.github.io/origami/public/images/blog-hero.jpg?r=1&t=' + Date.now();
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var prefetchTask = Image.prefetch(IMAGE_PREFETCH_URL);
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var NetworkImageCallbackExample = React.createClass({
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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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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={() => this._loadEventFired(`✔ onLoadStart (+${new Date() - mountTime}ms)`)}
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onLoad={() => this._loadEventFired(`✔ onLoad (+${new Date() - mountTime}ms)`)}
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onLoadEnd={() => {
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this._loadEventFired(`✔ onLoadEnd (+${new Date() - mountTime}ms)`);
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this.setState({startLoadPrefetched: true}, () => {
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prefetchTask.then(() => {
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this._loadEventFired(`✔ Prefetch OK (+${new Date() - mountTime}ms)`);
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}, error => {
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this._loadEventFired(`✘ Prefetch failed (+${new Date() - mountTime}ms)`);
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});
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});
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}}
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/>
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{this.state.startLoadPrefetched ?
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<Image
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source={this.props.prefetchedSource}
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style={[styles.base, {overflow: 'visible'}]}
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onLoadStart={() => this._loadEventFired(`✔ (prefetched) onLoadStart (+${new Date() - mountTime}ms)`)}
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onLoad={() => this._loadEventFired(`✔ (prefetched) onLoad (+${new Date() - mountTime}ms)`)}
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onLoadEnd={() => this._loadEventFired(`✔ (prefetched) onLoadEnd (+${new Date() - mountTime}ms)`)}
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/>
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: null}
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<Text style={{marginTop: 20}}>
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{this.state.events.join('\n')}
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</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 = React.createClass({
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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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<ActivityIndicatorIOS style={{marginLeft:5}}/>
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</View> : null;
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return this.state.error ?
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<Text>{this.state.error}</Text> :
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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={(e) => this.setState({loading: true})}
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onError={(e) => this.setState({error: e.nativeEvent.error, loading: false})}
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onProgress={(e) => this.setState({progress: Math.round(100 * e.nativeEvent.loaded / e.nativeEvent.total)})}
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onLoad={() => this.setState({loading: false, error: false})}>
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{loader}
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</Image>;
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}
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});
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var ImageSizeExample = React.createClass({
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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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<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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exports.displayName = (undefined: ?string);
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exports.framework = 'React';
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exports.title = '<Image>';
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exports.description = '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: '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 (
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<Image
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source={{uri: 'http://facebook.github.io/react/img/logo_og.png'}}
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style={styles.base}
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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: 'Plain Static Image',
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description: '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 source={require('./uie_thumb_normal.png')} style={styles.icon} />
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<Image source={require('./uie_thumb_selected.png')} style={styles.icon} />
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<Image source={require('./uie_comment_normal.png')} style={styles.icon} />
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<Image source={require('./uie_comment_highlighted.png')} style={styles.icon} />
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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 source={{uri: 'http://facebook.github.io/origami/public/images/blog-hero.jpg?r=1&t=' + Date.now()}}
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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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title: 'Error Handler',
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render: function() {
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return (
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<NetworkImageExample source={{uri: 'http://TYPO_ERROR_facebook.github.io/react/img/logo_og.png'}} />
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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 source={{uri: 'http://facebook.github.io/origami/public/images/blog-hero.jpg?r=1'}}/>
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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={{uri: 'http://facebook.github.io/origami/public/images/birds.jpg'}}
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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: '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
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style={[styles.base, {borderRadius: 5}]}
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source={fullImage}
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/>
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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
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style={[styles.base, {opacity: 1}]}
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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: 0.8}]}
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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',
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render: function() {
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return (
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<Image
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style={{width: 60, height: 60, backgroundColor: 'transparent'}}
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source={fullImage}>
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<Text style={styles.nestedText}>
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React
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</Text>
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</Image>
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);
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},
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},
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{
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title: 'Tint Color',
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description: 'The `tintColor` style prop changes all the non-alpha ' +
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'pixels to the tint color.',
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render: function() {
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return (
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<View>
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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, {borderRadius: 5, tintColor: '#5ac8fa' }]}
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/>
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<Image
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source={require('./uie_thumb_normal.png')}
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style={[styles.icon, styles.leftMargin, {borderRadius: 5, tintColor: '#4cd964' }]}
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/>
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<Image
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source={require('./uie_thumb_normal.png')}
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style={[styles.icon, styles.leftMargin, {borderRadius: 5, tintColor: '#ff2d55' }]}
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/>
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<Image
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source={require('./uie_thumb_normal.png')}
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style={[styles.icon, styles.leftMargin, {borderRadius: 5, tintColor: '#8e8e93' }]}
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/>
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</View>
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<Text style={styles.sectionText}>
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It also works with downloaded images:
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</Text>
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<View style={styles.horizontal}>
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<Image
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source={smallImage}
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style={[styles.base, {borderRadius: 5, tintColor: '#5ac8fa' }]}
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/>
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<Image
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source={smallImage}
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style={[styles.base, styles.leftMargin, {borderRadius: 5, tintColor: '#4cd964' }]}
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/>
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<Image
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source={smallImage}
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style={[styles.base, styles.leftMargin, {borderRadius: 5, tintColor: '#ff2d55' }]}
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/>
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<Image
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source={smallImage}
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style={[styles.base, styles.leftMargin, {borderRadius: 5, tintColor: '#8e8e93' }]}
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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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},
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{
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title: 'Resize Mode',
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description: 'The `resizeMode` style prop controls how the image is ' +
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'rendered within the frame.',
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render: function() {
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return (
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<View>
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{[smallImage, fullImage].map((image, index) => {
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return (
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<View key={index}>
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<View style={styles.horizontal}>
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<View>
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<Text style={[styles.resizeModeText]}>
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Contain
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</Text>
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<Image
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style={styles.resizeMode}
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resizeMode={Image.resizeMode.contain}
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source={image}
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/>
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</View>
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<View style={styles.leftMargin}>
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<Text style={[styles.resizeModeText]}>
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Cover
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</Text>
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<Image
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style={styles.resizeMode}
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resizeMode={Image.resizeMode.cover}
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source={image}
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/>
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</View>
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</View>
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<View style={styles.horizontal}>
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<View>
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<Text style={[styles.resizeModeText]}>
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Stretch
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</Text>
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<Image
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style={styles.resizeMode}
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resizeMode={Image.resizeMode.stretch}
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source={image}
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/>
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</View>
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{ Platform.OS === 'android' ?
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<View style={styles.leftMargin}>
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<Text style={[styles.resizeModeText]}>
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Center
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</Text>
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<Image
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style={styles.resizeMode}
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resizeMode={Image.resizeMode.center}
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source={image}
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/>
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</View>
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: null }
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</View>
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</View>
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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: 'Animated GIF',
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render: function() {
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return (
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<Image
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style={styles.gif}
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source={{uri: 'http://38.media.tumblr.com/9e9bd08c6e2d10561dd1fb4197df4c4e/tumblr_mfqekpMktw1rn90umo1_500.gif'}}
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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: 'Base64 image',
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render: function() {
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return (
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<Image
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style={styles.base64}
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source={{uri: base64Icon, scale: 3}}
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/>
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);
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},
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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} />;
|
|
},
|
|
platform: 'ios',
|
|
},
|
|
];
|
|
|
|
var fullImage = {uri: 'http://facebook.github.io/react/img/logo_og.png'};
|
|
var smallImage = {uri: 'http://facebook.github.io/react/img/logo_small_2x.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',
|
|
},
|
|
});
|