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LibGfx/OpenType: Support one specific type of embedded color bitmaps

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This patch adds support for index format 1 and image format 17.
This is enough to get Noto Color Emoji working.
This commit is contained in:
Andreas Kling 2023-03-04 20:52:59 +01:00
parent e8cc1a4373
commit 924d23353e
5 changed files with 181 additions and 6 deletions
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2
Userland/Libraries/LibGfx/Font/WOFF/Font.h
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@ -25,7 +25,7 @@ public:
static ErrorOr<NonnullRefPtr<Font>> try_load_from_externally_owned_memory(ReadonlyBytes bytes, unsigned index = 0);
virtual Gfx::ScaledFontMetrics metrics(float x_scale, float y_scale) const override { return m_input_font->metrics(x_scale, y_scale); }
virtual Gfx::ScaledGlyphMetrics glyph_metrics(u32 glyph_id, float x_scale, float y_scale) const override { return m_input_font->glyph_metrics(glyph_id, x_scale, y_scale); }
virtual Gfx::ScaledGlyphMetrics glyph_metrics(u32 glyph_id, float x_scale, float y_scale, float point_width, float point_height) const override { return m_input_font->glyph_metrics(glyph_id, x_scale, y_scale, point_width, point_height); }
virtual float glyphs_horizontal_kerning(u32 left_glyph_id, u32 right_glyph_id, float x_scale) const override { return m_input_font->glyphs_horizontal_kerning(left_glyph_id, right_glyph_id, x_scale); }
virtual RefPtr<Gfx::Bitmap> rasterize_glyph(u32 glyph_id, float x_scale, float y_scale, Gfx::GlyphSubpixelOffset subpixel_offset) const override { return m_input_font->rasterize_glyph(glyph_id, x_scale, y_scale, subpixel_offset); }
virtual u32 glyph_count() const override { return m_input_font->glyph_count(); }