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LibGfx: Move ScaledFont and new base class VectorFont out of TTF

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Simon Wanner 2022-04-09 10:14:58 +02:00 • committed by Andreas Kling
parent 206d6ece55
commit 5136c5ae1a
9 changed files with 260 additions and 199 deletions
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49
Userland/Libraries/LibGfx/Font/VectorFont.h Normal file
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/*
* Copyright (c) 2022, the SerenityOS developers.
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/Noncopyable.h>
#include <AK/RefCounted.h>
namespace Gfx {
struct ScaledFontMetrics {
float ascender { 0 };
float descender { 0 };
float line_gap { 0 };
int height() const
{
return ascender - descender;
}
};
struct ScaledGlyphMetrics {
int ascender;
int descender;
int advance_width;
int left_side_bearing;
};
class VectorFont : public RefCounted<VectorFont> {
public:
virtual ~VectorFont() { }
virtual ScaledFontMetrics metrics(float x_scale, float y_scale) const = 0;
virtual ScaledGlyphMetrics glyph_metrics(u32 glyph_id, float x_scale, float y_scale) const = 0;
virtual float glyphs_horizontal_kerning(u32 left_glyph_id, u32 right_glyph_id, float x_scale) const = 0;
virtual RefPtr<Gfx::Bitmap> rasterize_glyph(u32 glyph_id, float x_scale, float y_scale) const = 0;
virtual u32 glyph_count() const = 0;
virtual u16 units_per_em() const = 0;
virtual u32 glyph_id_for_code_point(u32 code_point) const = 0;
virtual String family() const = 0;
virtual String variant() const = 0;
virtual u16 weight() const = 0;
virtual u8 slope() const = 0;
virtual bool is_fixed_width() const = 0;
};
}