mirror of
https://github.com/RGBCube/serenity
synced 2025-10-31 00:42:44 +00:00
64 lines
1.4 KiB
C++
64 lines
1.4 KiB
C++
/*
|
|
* Copyright (c) 2023, Aliaksandr Kalenik <kalenik.aliaksandr@gmail.com>
|
|
*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include <AK/HashMap.h>
|
|
#include <AK/Noncopyable.h>
|
|
#include <LibAccelGfx/GL.h>
|
|
#include <LibGfx/Font/Font.h>
|
|
|
|
namespace AccelGfx {
|
|
|
|
class GlyphAtlas {
|
|
AK_MAKE_NONCOPYABLE(GlyphAtlas);
|
|
|
|
public:
|
|
GlyphAtlas()
|
|
: m_texture(GL::create_texture())
|
|
{
|
|
}
|
|
|
|
~GlyphAtlas()
|
|
{
|
|
GL::delete_texture(m_texture);
|
|
}
|
|
|
|
static GlyphAtlas& the();
|
|
|
|
struct GlyphsTextureKey {
|
|
Gfx::Font const* font;
|
|
u32 code_point;
|
|
|
|
bool operator==(GlyphsTextureKey const& other) const
|
|
{
|
|
return font == other.font && code_point == other.code_point;
|
|
}
|
|
};
|
|
|
|
void update(HashMap<Gfx::Font const*, HashTable<u32>> const& unique_glyphs);
|
|
Optional<Gfx::IntRect> get_glyph_rect(Gfx::Font const*, u32 code_point) const;
|
|
|
|
GL::Texture const& texture() const { return m_texture; }
|
|
|
|
private:
|
|
GL::Texture m_texture;
|
|
HashMap<GlyphsTextureKey, Gfx::IntRect> m_glyphs_texture_map;
|
|
};
|
|
|
|
}
|
|
|
|
namespace AK {
|
|
|
|
template<>
|
|
struct Traits<AccelGfx::GlyphAtlas::GlyphsTextureKey> : public DefaultTraits<AccelGfx::GlyphAtlas::GlyphsTextureKey> {
|
|
static unsigned hash(AccelGfx::GlyphAtlas::GlyphsTextureKey const& key)
|
|
{
|
|
return pair_int_hash(ptr_hash(key.font), key.code_point);
|
|
}
|
|
};
|
|
|
|
}
|