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LibGfx: Allow extracting paths from fonts and add Gfx::Path::text()

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This updates fonts so rather than rastering directly to a bitmap, you
can extract paths for glyphs. This is then used to implement a
Gfx::Path::text("some text", font) API, that if given a vector font
appends the path of the text to your Gfx::Path. This then allows
arbitrary manipulation of the text (rotation, skewing, etc), paving the
way for Word Art in Serenity.
This commit is contained in:
MacDue 2023-11-04 21:41:24 +00:00 • committed by Alexander Kalenik
parent b4cabde4a4
commit 50d33f79fa
14 changed files with 186 additions and 88 deletions
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Userland/Libraries/LibGfx/Font/ScaledFont.h
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@ -31,6 +31,7 @@ public:
ScaledFontMetrics metrics() const { return m_font->metrics(m_x_scale, m_y_scale); }
ScaledGlyphMetrics glyph_metrics(u32 glyph_id) const { return m_font->glyph_metrics(glyph_id, m_x_scale, m_y_scale, m_point_width, m_point_height); }
RefPtr<Gfx::Bitmap> rasterize_glyph(u32 glyph_id, GlyphSubpixelOffset) const;
bool append_glyph_path_to(Gfx::Path&, u32 glyph_id) const;
// ^Gfx::Font
virtual NonnullRefPtr<Font> clone() const override { return MUST(try_clone()); } // FIXME: clone() should not need to be implemented