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f3a6a589c8
Getting the first font in a font cascade list with an empty font list results in an OOTB index error. If the font list is empty, the last resort font should be returned instead.
53 lines
1.4 KiB
C++
53 lines
1.4 KiB
C++
/*
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* Copyright (c) 2023-2024, Aliaksandr Kalenik <kalenik.aliaksandr@gmail.com>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <LibGfx/Font/Font.h>
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#include <LibGfx/Font/UnicodeRange.h>
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namespace Gfx {
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class FontCascadeList : public RefCounted<FontCascadeList> {
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public:
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static NonnullRefPtr<FontCascadeList> create()
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{
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return adopt_ref(*new FontCascadeList());
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}
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size_t size() const { return m_fonts.size(); }
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bool is_empty() const { return m_fonts.is_empty() && !m_last_resort_font; }
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Font const& first() const { return !m_fonts.is_empty() ? *m_fonts.first().font : *m_last_resort_font; }
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template<typename Callback>
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void for_each_font_entry(Callback callback) const
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{
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for (auto const& font : m_fonts)
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callback(font);
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}
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void add(NonnullRefPtr<Font> font);
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void add(NonnullRefPtr<Font> font, Vector<UnicodeRange> unicode_ranges);
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void extend(FontCascadeList const& other);
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Gfx::Font const& font_for_code_point(u32 code_point) const;
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bool equals(FontCascadeList const& other) const;
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struct Entry {
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NonnullRefPtr<Font> font;
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Optional<Vector<UnicodeRange>> unicode_ranges;
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};
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void set_last_resort_font(NonnullRefPtr<Font> font) { m_last_resort_font = move(font); }
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private:
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RefPtr<Font const> m_last_resort_font;
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Vector<Entry> m_fonts;
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};
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}
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