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LibWeb: Ignore non-finite arguments to canvas text drawing methods

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Tim Ledbetter 2025-10-20 10:27:33 +01:00 • committed by Sam Atkins
commit 303ebc0a67
Notes: github-actions[bot] 2025-10-20 11:13:27 +00:00
3 changed files with 46 additions and 0 deletions
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8
Libraries/LibWeb/HTML/CanvasRenderingContext2D.cpp
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@ -310,13 +310,21 @@ Gfx::Path CanvasRenderingContext2D::text_path(Utf16String const& text, float x,
return path.copy_transformed(transform);
}
// https://html.spec.whatwg.org/multipage/canvas.html#dom-context-2d-filltext
void CanvasRenderingContext2D::fill_text(Utf16String const& text, float x, float y, Optional<double> max_width)
{
if (!isfinite(x) || !isfinite(y) || (max_width.has_value() && !isfinite(max_width.value())))
return;
fill_internal(text_path(text, x, y, max_width), Gfx::WindingRule::Nonzero);
}
// https://html.spec.whatwg.org/multipage/canvas.html#dom-context-2d-stroketext
void CanvasRenderingContext2D::stroke_text(Utf16String const& text, float x, float y, Optional<double> max_width)
{
if (!isfinite(x) || !isfinite(y) || (max_width.has_value() && !isfinite(max_width.value())))
return;
stroke_internal(text_path(text, x, y, max_width));
}