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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,108 @@ | ||
| import React, { | ||
| memo, | ||
| type FunctionComponent, | ||
| useEffect, | ||
| useState, | ||
| useRef, | ||
| } from "react"; | ||
| import { ActivityIndicator, View, type LayoutChangeEvent } from "react-native"; | ||
| import { SvgFromXml } from "react-native-svg"; | ||
| import { getSvgDimensions } from "./../utils/svg"; | ||
|
|
||
| type MDSvgProps = { | ||
| uri: string; | ||
| alt?: string; | ||
| }; | ||
|
|
||
| type MdSvgState = { | ||
| viewBox: string; | ||
| width: number; | ||
| height: number; | ||
| svg: string; | ||
| isLoading: boolean; | ||
| error: boolean; | ||
| aspectRatio?: number; | ||
| }; | ||
|
|
||
| const MDSvg: FunctionComponent<MDSvgProps> = ({ uri, alt = "image" }) => { | ||
| const isFirstLoad = useRef<boolean>(false); | ||
| const [layoutWidth, setLayoutWidth] = useState<number>(0); | ||
| const [svgState, setSvgState] = useState<MdSvgState>({ | ||
| viewBox: "", | ||
| width: 0, | ||
| height: 0, | ||
| svg: "", | ||
| isLoading: true, | ||
| error: false, | ||
| aspectRatio: undefined, | ||
| }); | ||
| useEffect(() => { | ||
| const fetchSvg = async () => { | ||
| try { | ||
| const res = await fetch(uri); | ||
| const text = await res.text(); | ||
| if (res.status !== 200) { | ||
| throw new Error("Status is not 200"); | ||
| } | ||
| const { viewBox, width, height } = getSvgDimensions(text); | ||
|
|
||
| setSvgState({ | ||
| width, | ||
| height, | ||
| viewBox, | ||
| svg: text, | ||
| isLoading: false, | ||
| error: false, | ||
| aspectRatio: width / height, | ||
| }); | ||
| } catch (e) { | ||
| setSvgState((state) => ({ | ||
| ...state, | ||
| error: true, | ||
| isLoading: false, | ||
| })); | ||
| } | ||
| }; | ||
|
|
||
| fetchSvg(); | ||
| }, []); | ||
|
|
||
| const onLayout = (event: LayoutChangeEvent) => { | ||
| if (!isFirstLoad.current) { | ||
| setLayoutWidth(event.nativeEvent.layout.width ?? 0); | ||
| isFirstLoad.current = true; | ||
| } | ||
| }; | ||
|
|
||
| const getWidth = () => { | ||
| if (layoutWidth && svgState.width) { | ||
| return Math.min(layoutWidth, svgState.width); | ||
| } | ||
| return "100%"; | ||
| }; | ||
|
|
||
| return ( | ||
| <View | ||
| style={{ width: getWidth(), aspectRatio: svgState.aspectRatio }} | ||
| onLayout={onLayout} | ||
| > | ||
| {svgState.isLoading ? ( | ||
| <ActivityIndicator size={"small"} /> | ||
| ) : ( | ||
| <SvgFromXml | ||
| xml={svgState.svg} | ||
| width={"100%"} | ||
| height={"100%"} | ||
| viewBox={svgState.viewBox} | ||
| aria-label={alt} | ||
| accessibilityRole="image" | ||
| accessibilityLabel={alt} | ||
| accessibilityHint={undefined} | ||
| testID="react-native-marked-md-svg" | ||
| /> | ||
| )} | ||
| </View> | ||
| ); | ||
| }; | ||
|
|
||
| export default memo(MDSvg); |
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