ImageSlider.js
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'use strict';
import React from 'react';
import ReactNative from 'react-native';
import Swiper from 'react-native-swiper';
import YH_Image from '../../../common/components/YH_Image';
import Immutable, {Map} from 'immutable';
const {
View,
Image,
TouchableOpacity,
StyleSheet,
Dimensions,
Platform,
} = ReactNative;
export default class ImageSlider extends React.Component {
constructor(props) {
super (props);
this.dot = <View
style={{
backgroundColor:'rgba(237, 237, 237, 0.5)',
width: 5,
height: 5,
borderRadius: 2.5,
marginLeft: 3,
marginRight: 3,
marginTop: (Platform.OS === 'ios')?3:1,
marginBottom: 0,
}}
/>;
this.activeDot = <View
style={{
backgroundColor:'white',
width: 5,
height: 5,
borderRadius: 2.5,
marginLeft: 3,
marginRight: 3,
marginTop: 3,
marginBottom: 0,
}}
/>;
}
shouldComponentUpdate(nextProps){
if (Immutable.is(nextProps.resource, this.props.resource)
&& nextProps.sliderWidth == this.props.sliderWidth
&& nextProps.sliderHeight == this.props.sliderHeight) {
return false;
} else {
return true;
}
}
render() {
let {resource, sliderWidth, sliderHeight} = this.props;
if (!resource || resource.size == 0) {
return null;
}
let data = this.props.resource.toJS();
if (data.length == 1) {
let url = YH_Image.getSlicedUrl(data[0].src, sliderWidth, sliderHeight, 2);
return (
<TouchableOpacity
activeOpacity={1}
style={{width: sliderWidth, height: sliderHeight}}
onPress={() => {
this.props.onPressSlideItem && this.props.onPressSlideItem(data[0].url, 0);
}}
>
<YH_Image
url={url}
style={{ width: sliderWidth, height: sliderHeight}}
/>
</TouchableOpacity>
);
} else {
return (
<Swiper
showsButtons={false}
loop={true}
autoplay={true}
autoplayTimeout={3}
dot={this.dot}
activeDot={(Platform.OS === 'ios') ? this.activeDot : null}
width={sliderWidth}
height={sliderHeight}
paginationStyle={{
backgroundColor: 'rgba(68, 68, 68, 0.2)',
bottom: 10,
height: 10,
width: data.length * 12,
borderRadius: 5,
marginLeft: (sliderWidth - data.length * 12)/2,
paddingBottom: 3,
}}
>
{data.map((item, i) => {
let url = YH_Image.getSlicedUrl(item.src, sliderWidth, sliderHeight, 2);
return (
<TouchableOpacity
key={i}
activeOpacity={1}
onPress={() => {
this.props.onPressSlideItem && this.props.onPressSlideItem(item.url, i);
}}
>
<YH_Image
url={url}
style={{width: sliderWidth, height: sliderHeight}}
/>
</TouchableOpacity>
);
})}
</Swiper>
);
}
}
}