index.js

import React, {Component} from "react";
import {
  StyleSheet,
  Text,
  View,
  Image,
  TextInput,
  TouchableOpacity,
  Slider,
  Switch,
} from "react-native";

import { Surface } from "gl-react-native";

import RNFS from "react-native-fs";
import HelloGL from "./HelloGL";
import Saturation from "./Saturation";
import HueRotate from "./HueRotate";
import PieProgress from "./PieProgress";
import OneFingerResponse from "./OneFingerResponse";
import AnimatedHelloGL from "./AnimatedHelloGL";
import {Blur} from "gl-react-blur";
import Button from "./Button";

class Demo extends Component {
  render () {
    const { title, children } = this.props;
    return <View>
      <Text style={styles.demoTitle}>{title}</Text>
      <View style={styles.demo}>
        {children}
      </View>
    </View>;
  }
}

class Demos extends Component {
  render () {
    const { children, onChange, value } = this.props;
    return <View>
      <View style={styles.nav}>
        {React.Children.map(children, (demo, i) =>
          <Text
            style={{ flex: 1, padding: 10 }}
            textStyle={{
              textAlign: "center",
              color: i!==value ? "#123" : "#69c",
              fontWeight: "bold"
            }}
            onPress={() => onChange(i)}>
            {""+(i+1)}
          </Text>)}
      </View>
      <View style={styles.demos}>
        {children[value]}
      </View>
  </View>;
  }
}

class Simple extends Component {

  state = {
    current: 0,
    saturationFactor: 1,
    hue: 0,
    progress: 0,
    factor: 0,
    text: "and I will return leading the pack",
    switch1: false,
    switch2: false,
    switch3: false,
    captured: null,
    captureConfig: null
  };


  onCapture1 = () => {
    const captureConfig = {
      quality: Math.round((Math.random() * 100))/100,
      type: Math.random() < 0.5 ? "jpg": "png",
      format: Math.random() < 0.5 ? "base64" : "file"
    };
    if (captureConfig.format === "file") {
      captureConfig.filePath = RNFS.DocumentDirectoryPath+"/hellogl_capture.png";
    }
    this.refs.helloGL
    .captureFrame(captureConfig)
    .then(captured => this.setState({ captured, captureConfig }));
  };

  render () {
    const {
      current,
      saturationFactor,
      hue,
      text,
      progress,
      factor,
      switch1,
      switch2,
      switch3,
      captured,
      captureConfig
    } = this.state;

    return <View style={styles.container}>

      <Demos onChange={current => this.setState({ current })} value={current}>
        <Demo id={1} title="1. Hello GL">
          <Surface width={256} height={171} ref="helloGL">
            <HelloGL />
          </Surface>
          <View style={{ marginTop: 20, flexDirection: "row" }}>
            <Button onPress={this.onCapture1}>
              captureFrame()
            </Button>
            {captured &&
              <Image source={{ uri: captured }}
                style={{ marginLeft: 20, width: 51, height: 34 }}
              /> }
          </View>
          {captureConfig &&
            <View style={{ paddingTop: 20, alignItems: "center", flexDirection: "row", justifyContent: "space-between" }}>
              <Text style={{ fontSize: 10 }}>
                format={captureConfig.format}
              </Text>
              <Text style={{ fontSize: 10 }}>
                type={captureConfig.type}
              </Text>
              <Text style={{ fontSize: 10 }}>
                quality={captureConfig.quality+""}
              </Text>
            </View>
          }
          {captured &&
            <Text numberOfLines={1} style={{ marginTop: 10, fontSize: 10, color: "#aaa" }}>
              {captured.slice(0, 100)}
            </Text> }
        </Demo>

        <Demo id={2} title="2. Saturate an Image">
          <Surface width={256} height={171}>
            <Saturation
              factor={saturationFactor}
              image={{ uri: "http://i.imgur.com/iPKTONG.jpg" }}
            />
          </Surface>
          <Slider
            maximumValue={8}
            onValueChange ={saturationFactor => this.setState({ saturationFactor })}
          />
        </Demo>

        <Demo id={3} current={current} title="3. Hue Rotate on Text+Image">
          <Surface autoRedraw width={256} height={180}>
            <HueRotate hue={hue}>
              <View key="hue" style={{ width: 256, height: 180 }}>
                <Image style={{ width: 256, height: 244 }} source={{ uri: "http://i.imgur.com/qVxHrkY.jpg" }}/>
                <Text style={styles.demoText1}>Throw me to the wolves</Text>
                <Text style={styles.demoText2}>{text}</Text>
              </View>
            </HueRotate>
          </Surface>
          <Slider
            maximumValue={2 * Math.PI}
            onValueChange={hue => this.setState({ hue })}
          />
          <TextInput
            style={{ height: 40, borderColor: "#aaa", borderWidth: 1 }}
            onChangeText={text => this.setState({ text })}
            value={text}
          />
        </Demo>

        <Demo id={4} current={current} title="4. Progress Indicator">
          <View style={{ position: "relative", width: 256, height: 180 }}>
            <TouchableOpacity>
              <Image source={{ uri: "http://i.imgur.com/qM9BHCy.jpg" }}
                style={{
                  width: 256,
                  height: 180,
                  position: "absolute",
                  top: 0,
                  left: 0
                }}
              />
            </TouchableOpacity>
            <View pointerEvents="box-none" style={{ position: "absolute", top: 0, left: 0, backgroundColor: "transparent" }}>
              <Surface width={256} height={180} backgroundColor="transparent" eventsThrough>
                <PieProgress progress={progress} />
              </Surface>
            </View>
          </View>
          <Slider
            maximumValue={1}
            onValueChange={progress => this.setState({ progress })}
          />
        </Demo>

        <Demo id={5} current={current} title="5. Touch Responsive">
          <OneFingerResponse
            width={256}
            height={180}
          />
        </Demo>

        <Demo id={6} current={current} title="6. Animation">
          <AnimatedHelloGL
            width={256}
            height={180}
          />
        </Demo>

        <Demo id={7} current={current} title="7. Blur">
          <Surface preload width={256} height={180}>
            <Blur factor={factor * 2} passes={4}>
              http://i.imgur.com/3On9QEu.jpg
            </Blur>
          </Surface>
          <Slider
            maximumValue={2}
            onValueChange={factor => this.setState({ factor })} />
        </Demo>

        <Demo id={8} current={current} title="8. Blur+Hue over UI">
          <Surface
            width={256}
            height={160}
            autoRedraw
            eventsThrough
            visibleContent>
            <HueRotate hue={-switch1 + 2 * switch2 + 4 * switch3}>
              <Blur factor={factor}>
                <View key="blur" style={{ width: 256, height: 160, padding: 10, backgroundColor: "#f9f9f9" }}>
                  <Slider
                    style={{ height: 80 }}
                    maximumValue={1}
                    onValueChange={factor => this.setState({ factor })}
                  />
                <View style={{ height: 60, flexDirection: "row", alignItems: "center" }}>
                  <Switch style={{flex:1}} value={switch1} onValueChange={(switch1) => this.setState({ switch1 })} />
                  <Switch style={{flex:1}} value={switch2} onValueChange={(switch2) => this.setState({ switch2 })} />
                  <Switch style={{flex:1}} value={switch3} onValueChange={(switch3) => this.setState({ switch3 })} />
                </View>
                </View>
              </Blur>
            </HueRotate>
          </Surface>
          <Text>Note: This is highly experimental and not yet performant enough.</Text>
        </Demo>

        <Demo id={9} current={current} title="9. Texture from array">
          <Text>Not Supported Yet</Text>
        </Demo>

      </Demos>
    </View>;
  }
}

const styles = StyleSheet.create({
  container: {
    flex: 1,
    backgroundColor: "#F9F9F9",
    paddingTop: 50,
  },
  nav: {
    flexDirection: "row",
    marginBottom: 20
  },
  demos: {
    flex: 1,
    justifyContent: "center",
    marginLeft: 40,
    width: 276,
    marginBottom: 40,
  },
  demoTitle: {
    marginBottom: 16,
    fontStyle: "italic",
    alignSelf: "flex-start",
    color: "#999",
    fontWeight: "300",
    fontSize: 20,
  },
  demo: {
    marginBottom: 64,
    marginLeft: 20,
  },
  demoText1: {
    position: "absolute",
    top: 0,
    left: 0,
    width: 256,
    textAlign: "center",
    color: "#f16",
    backgroundColor: "transparent",
    fontWeight: "400",
    fontSize: 24,
    letterSpacing: 0
  },
  demoText2: {
    position: "absolute",
    bottom: 4,
    left: 0,
    width: 256,
    textAlign: "center",
    color: "#7bf",
    backgroundColor: "transparent",
    fontWeight: "300",
    fontSize: 32,
    letterSpacing: -1
  },
});

module.exports = Simple;