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LibGfx: Support computing a font's glyph width with code point iterators

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This allows consideration of multi-code point glyphs.
This commit is contained in:
Timothy Flynn 2023-02-20 14:40:12 -05:00 • committed by Andreas Kling
parent 71967bc5de
commit a391ea3da3
5 changed files with 46 additions and 22 deletions
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11
Userland/Libraries/LibGfx/Font/BitmapFont.h
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@ -61,12 +61,10 @@ public:
bool contains_glyph(u32 code_point) const override;
bool contains_raw_glyph(u32 code_point) const { return m_glyph_widths[code_point] > 0; }
virtual float glyph_or_emoji_width(u32 code_point) const override
{
if (m_fixed_width)
return m_glyph_width;
return glyph_or_emoji_width_for_variable_width_font(code_point);
}
virtual float glyph_or_emoji_width(u32) const override;
virtual float glyph_or_emoji_width(Utf8CodePointIterator&) const override;
virtual float glyph_or_emoji_width(Utf32CodePointIterator&) const override;
float glyphs_horizontal_kerning(u32, u32) const override { return 0.f; }
u8 glyph_height() const override { return m_glyph_height; }
int x_height() const override { return m_x_height; }
@ -138,7 +136,6 @@ private:
int unicode_view_width(T const& view) const;
void update_x_height() { m_x_height = m_baseline - m_mean_line; };
int glyph_or_emoji_width_for_variable_width_font(u32 code_point) const;
DeprecatedString m_name;
DeprecatedString m_family;