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https://github.com/RGBCube/serenity
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f900957d26
Before this change, we would only cache and reuse Gfx::ScaledFont instances for downloaded CSS fonts. By moving it into Gfx::VectorFont, we get caching for all vector fonts, including local system TTFs etc. This avoids a *lot* of style invalidations in LibWeb, since we now vend the same Gfx::Font pointer for the same font when used repeatedly.
31 lines
950 B
C++
31 lines
950 B
C++
/*
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* Copyright (c) 2023, Andreas Kling <kling@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <LibGfx/Font/ScaledFont.h>
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#include <LibGfx/Font/VectorFont.h>
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namespace Gfx {
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VectorFont::VectorFont() = default;
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VectorFont::~VectorFont() = default;
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NonnullRefPtr<ScaledFont> VectorFont::scaled_font(float point_size) const
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{
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auto it = m_scaled_fonts.find(point_size);
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if (it != m_scaled_fonts.end())
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return *it->value;
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// FIXME: It might be nice to have a global cap on the number of fonts we cache
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// instead of doing it at the per-VectorFont level like this.
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constexpr size_t max_cached_font_size_count = 128;
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if (m_scaled_fonts.size() > max_cached_font_size_count)
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m_scaled_fonts.remove(m_scaled_fonts.begin());
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auto scaled_font = adopt_ref(*new ScaledFont(*this, point_size, point_size));
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m_scaled_fonts.set(point_size, scaled_font);
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return scaled_font;
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}
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}
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