SelectColorView.js
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import React, { Component } from 'react';
import {
View,
Text,
StyleSheet,
TouchableOpacity,
Image,
Modal, ScrollView, Slider
} from 'react-native';
import {width} from "../utils/getSize";
const defaultColor = '#FF8D1A';
const colorsys = require('colorsys');
export default class SelectColorView extends Component {
constructor(props) {
super(props);
this.state = {
selectColor: defaultColor,// 选择的颜色
selectRValue: 0,// R值
selectGValue: 0,// G值
selectBValue: 0,// B值
showSelectColor: false,
};
this.onEnter = this.props.onEnter;
this.onCancel = this.props.onCancel;
this.selectColorList = ['#010101', '#3664FF', '#67C858',
'#F6CC2A', '#F34434'];
}
resetInitColor(selectColor) {
if (selectColor && selectColor.length > 0) {
let rgbColorObj = colorsys.parseCss(selectColor);
this.setState({
showSelectColor:true,
selectColor: selectColor,
selectRValue: rgbColorObj.r,
selectGValue: rgbColorObj.g,// G值
selectBValue: rgbColorObj.b,// B值
})
}
}
/**
* 颜色item
* @param value
* @param index
*/
renderSelectColorItem(value, index) {
return (
<TouchableOpacity
key={index}
style={{width: '20%', paddingTop: 20, justifyContent: 'center', alignItems: 'center'}}
activeOpacity={0.8}
onPress={()=>{
this.setState({
showSelectColor:false,
});
if (this.onEnter) {
this.onEnter(value)
}
}}
>
<View style={{borderRadius: 20, width: 30, height: 30, backgroundColor: value}}/>
</TouchableOpacity>
);
}
render() {
if (this.state.showSelectColor) {
return (
<View style={styles.contentBg}>
{/** 标题栏 */}
<View style={styles.titleBar}>
<TouchableOpacity
style={{
justifyContent: "center",
alignItems: "center",
paddingVertical: 3,
paddingHorizontal: 15,
}}
activeOpacity={0.8}
onPress={() => {
this.setState({
showSelectColor:false,
});
if (this.onCancel) {
this.onCancel();
}
}}
>
<Text style={{fontSize: 16, color: 'rgba(128, 128, 128, 1)'}}>取消</Text>
</TouchableOpacity>
<Text style={styles.modelTitle}>颜色</Text>
<TouchableOpacity
style={{
justifyContent: "center",
alignItems: "center",
paddingVertical: 3,
paddingHorizontal: 15,
}}
activeOpacity={0.8}
onPress={() => {
// 完成颜色选择
if (this.onEnter) {
this.setState({
showSelectColor:false,
});
let selectColor = colorsys.rgb2Hex(this.state.selectRValue, this.state.selectGValue, this.state.selectBValue);
this.onEnter(selectColor);
}
}}
>
<Text style={{fontSize: 16, color: global.homeColor}}>完成</Text>
</TouchableOpacity>
</View>
{/** 内容 */}
<ScrollView style={{flex: 1}} horizontal={false} showsVerticalScrollIndicator={false}>
<View style={{backgroundColor: this.state.selectColor, width: 200, height: 120,alignSelf: 'center', borderRadius:4, marginTop: 15}}/>
<View style={{flexDirection: 'row', marginHorizontal: 20, marginTop: 10, alignItems: 'center'}}>
<Text style={{fontSize: 16, color: 'black', marginRight: 6}}>R</Text>
<Slider
style={{flex: 1}}
minimumValue={0}
maximumValue={255}
step={1}
value={this.state.selectRValue}
onValueChange={(value) => {
let _color = 'rgb('+value+','+this.state.selectGValue+','+this.state.selectBValue+')';
this.setState({
selectColor: _color,
selectRValue: value
});
}}
/>
<View style={{marginLeft: 6,width: 60, height: 36, justifyContent: 'center', alignItems: 'center', borderWidth: 1,
borderColor: global.homeColor, borderRadius: 4}}>
<Text style={{fontSize: 16, color: 'black', textAlign: 'center'}}>{this.state.selectRValue+''}</Text>
</View>
</View>
{/** G值选择 */}
<View style={{flexDirection: 'row', marginHorizontal: 20, marginTop: 10, alignItems: 'center'}}>
<Text style={{fontSize: 16, color: 'black', marginRight: 6}}>G</Text>
<Slider
style={{flex: 1}}
minimumValue={0}
maximumValue={255}
step={1}
value={this.state.selectGValue}
onValueChange={(value) => {
let _color = 'rgb('+this.state.selectRValue+','+value+','+this.state.selectBValue+')';
this.setState({
selectColor: _color,
selectGValue: value
});
}}
/>
<View style={{marginLeft: 6,width: 60, height: 36, justifyContent: 'center', alignItems: 'center', borderWidth: 1,
borderColor: global.homeColor, borderRadius: 4}}>
<Text style={{fontSize: 16, color: 'black', textAlign: 'center'}}>{this.state.selectGValue+''}</Text>
</View>
</View>
{/** B值选择 */}
<View style={{flexDirection: 'row', marginHorizontal: 20, marginTop: 10, alignItems: 'center'}}>
<Text style={{fontSize: 16, color: 'black', marginRight: 6}}>G</Text>
<Slider
style={{flex: 1}}
minimumValue={0}
maximumValue={255}
step={1}
value={this.state.selectBValue}
onValueChange={(value) => {
let _color = 'rgb('+this.state.selectRValue+','+this.state.selectGValue+','+value+')';
this.setState({
selectColor: _color,
selectBValue: value
});
}}
/>
<View style={{marginLeft: 6,width: 60, height: 36, justifyContent: 'center', alignItems: 'center', borderWidth: 1,
borderColor: global.homeColor, borderRadius: 4}}>
<Text style={{fontSize: 16, color: 'black', textAlign: 'center'}}>{this.state.selectBValue+''}</Text>
</View>
</View>
<View style={{marginVertical: 15, width: width, height: 1, backgroundColor: 'rgba(0,0,0,0.4)'}}/>
{/** 选取常用颜色 */}
<Text style={{marginLeft: 20, fontSize: 16, color: 'black'}}>常用颜色</Text>
<View style={{flexDirection: 'row', justifyContent: 'flex-start', flexWrap: 'wrap', alignItems: 'flex-start',
paddingHorizontal: 20, width: width}}>
{this.selectColorList && this.selectColorList.length > 0 && this.selectColorList.map(
((value, index) => this.renderSelectColorItem(value, index)))}
</View>
</ScrollView>
</View>
);
} else {
return null;
}
}
}
const styles = StyleSheet.create({
contentBg: {
width: '100%',
flex: 1,
marginTop: 122,
backgroundColor: "rgba(255, 255, 255, 1)",
borderTopLeftRadius: 16,
borderTopRightRadius: 16,
},
titleBar: {
flexDirection: "row",
justifyContent: "flex-start",
alignItems: "center",
paddingVertical: 10,
paddingRight: 15,
borderTopLeftRadius: 16,
borderTopRightRadius: 16,
backgroundColor: 'rgba(235, 235, 235, 1)'
},
modelTitle: {
flex: 1,
color: "rgba(0, 0, 0, 1)",
fontSize: 16,
textAlign: "center",
justifyContent: "center"
},
});