mirror of
https://github.com/LadybirdBrowser/ladybird.git
synced 2025-07-26 18:59:35 +00:00
0fece0650e
Some checks are pending
CI / macOS, arm64, Sanitizer, Clang (push) Waiting to run
CI / Linux, x86_64, Fuzzers, Clang (push) Waiting to run
CI / Linux, x86_64, Sanitizer, GNU (push) Waiting to run
CI / Linux, x86_64, Sanitizer, Clang (push) Waiting to run
Package the js repl as a binary artifact / Linux, arm64 (push) Waiting to run
Package the js repl as a binary artifact / macOS, arm64 (push) Waiting to run
Package the js repl as a binary artifact / Linux, x86_64 (push) Waiting to run
Run test262 and test-wasm / run_and_update_results (push) Waiting to run
Lint Code / lint (push) Waiting to run
Label PRs with merge conflicts / auto-labeler (push) Waiting to run
Push notes / build (push) Waiting to run
By keeping track of the enclosing range around all Unicode ranges of a FontCascadeList entry, we can quickly reject any code point that's outside all ranges. This knocks font_for_code_point() from 7% to 3% in the profile when scrolling on https://screenshotone.com/
59 lines
1.6 KiB
C++
59 lines
1.6 KiB
C++
/*
|
|
* Copyright (c) 2023-2024, Aliaksandr Kalenik <kalenik.aliaksandr@gmail.com>
|
|
*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include <LibGfx/Font/Font.h>
|
|
#include <LibGfx/Font/UnicodeRange.h>
|
|
|
|
namespace Gfx {
|
|
|
|
class FontCascadeList : public RefCounted<FontCascadeList> {
|
|
public:
|
|
static NonnullRefPtr<FontCascadeList> create()
|
|
{
|
|
return adopt_ref(*new FontCascadeList());
|
|
}
|
|
|
|
size_t size() const { return m_fonts.size(); }
|
|
bool is_empty() const { return m_fonts.is_empty() && !m_last_resort_font; }
|
|
Font const& first() const { return !m_fonts.is_empty() ? *m_fonts.first().font : *m_last_resort_font; }
|
|
|
|
template<typename Callback>
|
|
void for_each_font_entry(Callback callback) const
|
|
{
|
|
for (auto const& font : m_fonts)
|
|
callback(font);
|
|
}
|
|
|
|
void add(NonnullRefPtr<Font const> font);
|
|
void add(NonnullRefPtr<Font const> font, Vector<UnicodeRange> unicode_ranges);
|
|
|
|
void extend(FontCascadeList const& other);
|
|
|
|
Gfx::Font const& font_for_code_point(u32 code_point) const;
|
|
|
|
bool equals(FontCascadeList const& other) const;
|
|
|
|
struct Entry {
|
|
NonnullRefPtr<Font const> font;
|
|
struct RangeData {
|
|
// The enclosing range is the union of all Unicode ranges. Used for fast skipping.
|
|
UnicodeRange enclosing_range;
|
|
|
|
Vector<UnicodeRange> unicode_ranges;
|
|
};
|
|
Optional<RangeData> range_data;
|
|
};
|
|
|
|
void set_last_resort_font(NonnullRefPtr<Font> font) { m_last_resort_font = move(font); }
|
|
|
|
private:
|
|
RefPtr<Font const> m_last_resort_font;
|
|
Vector<Entry> m_fonts;
|
|
};
|
|
|
|
}
|