mirror of
https://github.com/RGBCube/serenity
synced 2025-05-31 18:18:12 +00:00
8cea9fe56d
By rounding the scaled glyph metrics, we were losing valuable precision, especially at smaller sizes.
50 lines
1.3 KiB
C++
50 lines
1.3 KiB
C++
/*
|
|
* Copyright (c) 2022, the SerenityOS developers.
|
|
*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include <AK/Noncopyable.h>
|
|
#include <AK/RefCounted.h>
|
|
#include <LibGfx/Forward.h>
|
|
|
|
namespace Gfx {
|
|
|
|
struct ScaledFontMetrics {
|
|
float ascender { 0 };
|
|
float descender { 0 };
|
|
float line_gap { 0 };
|
|
|
|
int height() const
|
|
{
|
|
return ascender - descender;
|
|
}
|
|
};
|
|
|
|
struct ScaledGlyphMetrics {
|
|
float ascender;
|
|
float descender;
|
|
float advance_width;
|
|
float 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 DeprecatedString family() const = 0;
|
|
virtual DeprecatedString variant() const = 0;
|
|
virtual u16 weight() const = 0;
|
|
virtual u8 slope() const = 0;
|
|
virtual bool is_fixed_width() const = 0;
|
|
};
|
|
|
|
}
|