Skip to content

Fix cursor misplacement on scroll in SQL editor #58

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Open
burneikis wants to merge 1 commit into
base: main
Choose a base branch
from
Open

Fix cursor misplacement on scroll in SQL editor #58

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
79 changes: 41 additions & 38 deletions src/components/case-study/SQLEditor.tsx
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -173,8 +173,7 @@ export function SQLEditor({
if (!textarea || !highlight) return;

const handleScroll = () => {
highlight.scrollTop = textarea.scrollTop;
highlight.scrollLeft = textarea.scrollLeft;
highlight.style.transform = `translate(${-textarea.scrollLeft}px, ${-textarea.scrollTop}px)`;
};

textarea.addEventListener("scroll", handleScroll);
Expand Down Expand Up @@ -355,44 +354,48 @@ export function SQLEditor({
return (
<div className="relative font-mono text-sm">
<div
ref={highlightRef}
className="absolute top-0 left-0 right-0 bottom-0 p-4 overflow-auto whitespace-pre-wrap break-words pointer-events-none text-amber-100"
className="absolute top-0 left-0 right-0 bottom-0 overflow-hidden pointer-events-none"
aria-hidden="true"
>
{query ? (
tokenize(query).map((token, i) => {
switch (token.type) {
case "keyword":
return (
<span key={i} className="sql-keyword">
{token.value}
</span>
);
case "string":
return (
<span key={i} className="sql-string">
{token.value}
</span>
);
case "number":
return (
<span key={i} className="sql-number">
{token.value}
</span>
);
case "comment":
return (
<span key={i} className="sql-comment">
{token.value}
</span>
);
default:
return <span key={i}>{token.value}</span>;
}
})
) : (
<span className="sql-placeholder">{placeholder}</span>
)}
<div
ref={highlightRef}
className="p-4 whitespace-pre-wrap break-words text-amber-100 will-change-transform"
>
{query ? (
tokenize(query).map((token, i) => {
switch (token.type) {
case "keyword":
return (
<span key={i} className="sql-keyword">
{token.value}
</span>
);
case "string":
return (
<span key={i} className="sql-string">
{token.value}
</span>
);
case "number":
return (
<span key={i} className="sql-number">
{token.value}
</span>
);
case "comment":
return (
<span key={i} className="sql-comment">
{token.value}
</span>
);
default:
return <span key={i}>{token.value}</span>;
}
})
) : (
<span className="sql-placeholder">{placeholder}</span>
)}
</div>
</div>
<textarea
ref={textareaRef}
Expand Down