react-native-bitmap-color-picker

A color picker on a bitmap image palette.

PS: The colour wheel picture was published on Pixabay by Pete Linforth .

Install

npm i --save react-native-bitmap-color-picker

Usage

import React from 'react';
import { View } from 'react-native';
import { BitMapColorPicker as ColorPicker } from 'react-native-bitmap-color-picker';

export default class SliderColorPickerExample extends React.Component {
    constructor(props) {
        super(props);
        this.state = { oldColor: "#f77100" };
    }

    componentDidMount() {
        setTimeout(() => this.colorPicker && this.colorPicker.setOldColor('#fde200'), 1000);
    }

    changeColor = (colorRgb, resType) => resType === 'end' && this.setState({ oldColor: colorRgb })
    
    changeColorComplete = (colorRgb, resType) => resType === 'end' && this.setState({ oldColor: colorRgb })


    render() {
        return (
            <View style={{flex: 1, alignItems: 'center'}}>
                <ColorPicker
                    ref={view => {this.colorPicker = view;}}
                    oldColor={this.state.oldColor}
                    onColorChange={this.changeColor}
                    onColorChangeComplete={this.changeColorComplete}
                    style={{width: 200, height: 200}}/>
            </View>
        );
    }
}

Props

Prop	Type	Optional	Default	Description
oldColor	Color string	Yes	undefined	Initial positon of the picker indicator
onColorChange	function	Yes		Callback continuously called while the user is dragging the picker indicator. The 1st argument is Color string. There is 2nd string argument 'end' when the picker indicator is released.
style	style	Yes		The style applied to the BitMapColorPicker container
base64Bmp	string	Yes	require('./colour-wheel-1740381_300.js').default	The bitmap palette base64 string, comes from some base64 convert tool against a bmp.

Methods

setOldColor(color)

Use this method to change positon of the picker indicator.

Sponsor

Alipay: flyskywhy@gmail.com

ETH: 0xd02fa2738dcbba988904b5a9ef123f7a957dbb3e