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import {RouteProp} from '@react-navigation/core';
import {StackNavigationProp} from '@react-navigation/stack';
import React, {useEffect, useState} from 'react';
import {Image, StyleSheet, TouchableOpacity} from 'react-native';
import {normalize} from 'react-native-elements';
import ImageZoom, {IOnMove} from 'react-native-image-pan-zoom';
import PhotoManipulator from 'react-native-photo-manipulator';
import CloseIcon from '../../assets/ionicons/close-outline.svg';
import {MainStackParams} from '../../routes';
import {HeaderHeight, SCREEN_HEIGHT, SCREEN_WIDTH} from '../../utils';
import {TaggSquareButton} from '../common';
type ZoomInCropperRouteProps = RouteProp<MainStackParams, 'ZoomInCropper'>;
type ZoomInCropperNavigationProps = StackNavigationProp<
MainStackParams,
'ZoomInCropper'
>;
interface ZoomInCropperProps {
route: ZoomInCropperRouteProps;
navigation: ZoomInCropperNavigationProps;
}
export const ZoomInCropper: React.FC<ZoomInCropperProps> = ({
route,
navigation,
}) => {
const {screenType, media, selectedCategory} = route.params;
const [aspectRatio, setAspectRatio] = useState<number>(1);
// Stores the coordinates of the cropped image
const [x0, setX0] = useState<number>();
const [x1, setX1] = useState<number>();
const [y0, setY0] = useState<number>();
const [y1, setY1] = useState<number>();
// Setting original aspect ratio of image
useEffect(() => {
if (media.uri) {
Image.getSize(
media.uri,
(w, h) => {
setAspectRatio(w / h);
},
(err) => console.log(err),
);
}
}, []);
// Crops original image based of (x0, y0) and (x1, y1) coordinates
const handleNext = () => {
if (
x0 !== undefined &&
x1 !== undefined &&
y0 !== undefined &&
y1 !== undefined
) {
PhotoManipulator.crop(media.uri, {
x: x0,
y: y1,
width: Math.abs(x0 - x1),
height: Math.abs(y0 - y1),
})
.then((croppedURL) => {
navigation.navigate('CaptionScreen', {
screenType,
media: {
uri: croppedURL,
isVideo: false,
},
selectedCategory,
});
})
.catch((err) => console.log('err: ', err));
} else if (
x0 === undefined &&
x1 === undefined &&
y0 === undefined &&
y1 === undefined
) {
navigation.navigate('CaptionScreen', {
screenType,
media,
selectedCategory,
});
}
};
/* Records (x0, y0) and (x1, y1) coordinates used later for cropping,
* based on(x, y) - the center of the image and scale of zoom
*/
const onMove = (position: IOnMove) => {
Image.getSize(
media.uri,
(w, h) => {
const x = position.positionX;
const y = position.positionY;
const scale = position.scale;
const screen_ratio = SCREEN_HEIGHT / SCREEN_WIDTH;
let tempx0 = w / 2 - x * (w / SCREEN_WIDTH) - w / 2 / scale;
let tempx1 = w / 2 - x * (w / SCREEN_WIDTH) + w / 2 / scale;
if (tempx0 < 0) {
tempx0 = 0;
}
if (tempx1 > w) {
tempx1 = w;
}
const x_distance = Math.abs(tempx1 - tempx0);
const y_distance = screen_ratio * x_distance;
let tempy0 = h / 2 - y * (h / SCREEN_HEIGHT) + y_distance / 2;
let tempy1 = h / 2 - y * (h / SCREEN_HEIGHT) - y_distance / 2;
if (tempy0 > h) {
tempy0 = h;
}
if (tempy1 < 0) {
tempy1 = 0;
}
setX0(tempx0);
setX1(tempx1);
setY0(tempy0);
setY1(tempy1);
},
(err) => console.log(err),
);
};
return (
<>
<TouchableOpacity
style={styles.closeButton}
onPress={() => navigation.goBack()}>
<CloseIcon height={25} width={25} color={'white'} />
</TouchableOpacity>
<ImageZoom
style={styles.zoomView}
cropWidth={SCREEN_WIDTH}
cropHeight={SCREEN_HEIGHT}
imageWidth={SCREEN_WIDTH}
imageHeight={SCREEN_WIDTH / aspectRatio}
onMove={onMove}>
<Image
style={{width: SCREEN_WIDTH, height: SCREEN_WIDTH / aspectRatio}}
source={{
uri: media.uri,
}}
/>
</ImageZoom>
<TaggSquareButton
onPress={handleNext}
title={'Next'}
buttonStyle={'normal'}
buttonColor={'blue'}
labelColor={'white'}
style={styles.button}
labelStyle={styles.buttonLabel}
/>
</>
);
};
const styles = StyleSheet.create({
closeButton: {
position: 'absolute',
top: 0,
paddingTop: HeaderHeight,
zIndex: 1,
marginLeft: '5%',
},
button: {
zIndex: 1,
position: 'absolute',
bottom: normalize(20),
right: normalize(15),
width: normalize(108),
height: normalize(25),
borderRadius: 10,
},
buttonLabel: {
fontWeight: '700',
fontSize: normalize(15),
lineHeight: normalize(17.8),
letterSpacing: normalize(1.3),
textAlign: 'center',
},
zoomView: {backgroundColor: 'black'},
});
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