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45 lines
1.3 KiB
C++
45 lines
1.3 KiB
C++
/*
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* Copyright (c) 2018-2023, 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 <AK/DeprecatedFlyString.h>
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#include <LibGfx/Font/Font.h>
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#include <LibWeb/FontCache.h>
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FontCache& FontCache::the()
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{
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static FontCache cache;
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return cache;
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}
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RefPtr<Gfx::Font const> FontCache::get(FontSelector const& font_selector) const
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{
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auto cached_font = m_fonts.get(font_selector);
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if (cached_font.has_value())
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return cached_font.value();
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return nullptr;
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}
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NonnullRefPtr<Gfx::Font const> FontCache::scaled_font(Gfx::Font const& font, float scale_factor)
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{
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auto device_font_pt_size = font.point_size() * scale_factor;
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FontSelector font_selector = { FlyString::from_deprecated_fly_string(font.family()).release_value_but_fixme_should_propagate_errors(), device_font_pt_size, font.weight(), font.width(), font.slope() };
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if (auto cached_font = FontCache::the().get(font_selector)) {
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return *cached_font;
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}
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if (auto font_with_device_pt_size = font.with_size(device_font_pt_size)) {
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set(font_selector, *font_with_device_pt_size);
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return font_with_device_pt_size.release_nonnull();
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}
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return font;
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}
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void FontCache::set(FontSelector const& font_selector, NonnullRefPtr<Gfx::Font const> font)
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{
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m_fonts.set(font_selector, move(font));
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}
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