55c1b5d1f4
This avoids an unecessary lossy conversion for the current time from double to i32. And avoids an UBSAN failure on macOS that's dependent on the current uptime.
64 lines
1.3 KiB
C++
64 lines
1.3 KiB
C++
/*
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* Copyright (c) 2022, the SerenityOS developers.
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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 <AK/Function.h>
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#include <AK/HashMap.h>
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#include <AK/IDAllocator.h>
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#include <LibCore/Timer.h>
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#include <LibWeb/HTML/EventLoop/EventLoop.h>
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namespace Web::HTML {
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struct AnimationFrameCallbackDriver {
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using Callback = Function<void(double)>;
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AnimationFrameCallbackDriver()
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{
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m_timer = Core::Timer::create_single_shot(16, [] {
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HTML::main_thread_event_loop().schedule();
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});
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}
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i32 add(Callback handler)
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{
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auto id = m_id_allocator.allocate();
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m_callbacks.set(id, move(handler));
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if (!m_timer->is_active())
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m_timer->start();
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return id;
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}
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bool remove(i32 id)
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{
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auto it = m_callbacks.find(id);
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if (it == m_callbacks.end())
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return false;
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m_callbacks.remove(it);
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m_id_allocator.deallocate(id);
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return true;
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}
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void run(double now)
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{
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auto taken_callbacks = move(m_callbacks);
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for (auto& [id, callback] : taken_callbacks)
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callback(now);
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}
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bool has_callbacks() const
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{
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return !m_callbacks.is_empty();
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}
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private:
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OrderedHashMap<i32, Callback> m_callbacks;
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IDAllocator m_id_allocator;
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RefPtr<Core::Timer> m_timer;
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};
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}
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