Comments (3)
This seems to work for me:
const MyComponent: React.FC = () => {
const renderNode = (
node: HTMLViewNode & { children: any },
index: number,
siblings: HTMLViewNode,
parent: HTMLViewNode,
defaultRenderer: (node: HTMLViewNode, parent: HTMLViewNode) => ReactNode): ReactNode | undefined => {
if (node.name === "sup") {
return <View key={index}>
{defaultRenderer(node.children, node)}
</View>;
}
return undefined;
};
return (<HTMLView value={""}
renderNode={renderNode}
stylesheet={{
p: {
fontSize: 20
},
sup: {
fontSize: 13
},
sub: {
fontSize: 13
}
}} />);
};
As suggested in my previous, I just wrap the <sup>
children inside a <View>
element to do the positioning using a custom renderer. I did not need to add any positioning styling, like top: -10
or something, as the children were automatically aligned to the top.
If this works for others as well, I can create a pull request to implement this into the source code. Please let me know.
Hope this helps others.
from react-native-htmlview.
Yeah, to clarify this to make it a better issue:
<sup>
and <sub>
tags aren't doing anything except for printing out raw text. So they basically work like a <span>
. However, the tags can be somewhat limited styled. So to achieve the <sub>
effect, just apply a styling with a smaller fontSize, like so:
<HTMLView stylesheet={
sub: {
fontSize: defaultFontSize * 0.6,
}
} />
But you cannot do the same for <sup>
, as you cannot align the <Text>
component inside another <Text>
component. So none of these styles will work to achieve a <sup>
effect:
sup: {
fontSize: defaultFontSize * 0.6,
textAlignVertical: "top", // nope
top: -20, // nope
lineHeight: 30, // nope
},
So basically, it seems like the only option is to wrap the rendered <Text>
component inside a <View>
component for subscript/superscript cases, so we can adjust their relative position. Instead of everyone building their own custom renderer, maybe this can be included in the source code?
from react-native-htmlview.
This seems to work for me:
const MyComponent: React.FC = () => { const renderNode = ( node: HTMLViewNode & { children: any }, index: number, siblings: HTMLViewNode, parent: HTMLViewNode, defaultRenderer: (node: HTMLViewNode, parent: HTMLViewNode) => ReactNode): ReactNode | undefined => { if (node.name === "sup") { return <View key={index}> {defaultRenderer(node.children, node)} </View>; } return undefined; }; return (<HTMLView value={""} renderNode={renderNode} stylesheet={{ p: { fontSize: 20 }, sup: { fontSize: 13 }, sub: { fontSize: 13 } }} />); };
As suggested in my previous, I just wrap the
<sup>
children inside a<View>
element to do the positioning using a custom renderer. I did not need to add any positioning styling, liketop: -10
or something, as the children were automatically aligned to the top.If this works for others as well, I can create a pull request to implement this into the source code. Please let me know.
Hope this helps others.
Is this working on android as well as iOS ? I tried something similar and android is not working as expected
from react-native-htmlview.
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from react-native-htmlview.