notesnook/apps/mobile/app/components/image-preview/index.js

import React, { useEffect, useState } from "react";
import { View } from "react-native";
import ImageViewer from "react-native-image-zoom-viewer";
import {
  eSubscribeEvent,
  eUnSubscribeEvent
} from "../../services/event-manager";
import BaseDialog from "../dialog/base-dialog";
import { IconButton } from "../ui/icon-button";

const ImagePreview = () => {
  const [visible, setVisible] = useState(false);
  const [image, setImage] = useState("");

  useEffect(() => {
    eSubscribeEvent("ImagePreview", open);

    return () => {
      eUnSubscribeEvent("ImagePreview", open);
    };
  }, []);

  const open = (image) => {
    setImage(image);
    setVisible(true);
  };

  const close = () => {
    setImage(null);
    setVisible(false);
  };

  return (
    visible && (
      <BaseDialog animation="slide" visible={true} onRequestClose={close}>
        <View
          style={{
            width: "100%",
            height: "100%",
            backgroundColor: "black"
          }}
        >
          <ImageViewer
            enableImageZoom={true}
            renderIndicator={() => <></>}
            enableSwipeDown
            useNativeDriver
            onSwipeDown={close}
            saveToLocalByLongPress={false}
            renderHeader={() => (
              <View
                style={{
                  flexDirection: "row",
                  width: "100%",
                  justifyContent: "flex-end",
                  alignItems: "center",
                  height: 80,
                  marginTop: 0,
                  paddingHorizontal: 12,
                  position: "absolute",
                  zIndex: 999,
                  backgroundColor: "rgba(0,0,0,0.3)",
                  paddingTop: 30
                }}
              >
                <IconButton
                  name="close"
                  color="white"
                  onPress={() => {
                    close();
                  }}
                />
              </View>
            )}
            imageUrls={[
              {
                url: image
              }
            ]}
          />
        </View>
      </BaseDialog>
    )
  );
};

export default ImagePreview;