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 })

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

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