Jelle Raaijmakers e99ff65a58 LibWeb: Use glyph positions & widths instead of Harfbuzz for range rects ...

We use Harfbuzz to lay out glyphs at their right positions, but we
should not do so for substrings as we were doing for selection/range
rects: their positioning is dependent on their full context to properly
determine kerning and ligatures, for example.

Instead, use the stored glyph positions & widths directly to calculate
the range rect for a partial fragment selection. This makes the
selection rect visually stable - it no longer jitters when expanding the
selection character by character.

2026-03-02 17:52:47 +01:00

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