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54 lines
1.2 KiB
C++
54 lines
1.2 KiB
C++
#pragma once
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#include "base/timer.hpp"
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#include <cstdint>
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namespace gui
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{
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class ScaleFpsHelper
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{
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public:
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uint32_t GetFps() const
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{
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if (m_frameTime == 0.0)
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return 0;
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return static_cast<uint32_t>(1.0 / m_frameTime);
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}
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bool IsPaused() const { return m_isPaused; }
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void SetFrameTime(double frameTime, bool isActiveFrame)
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{
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m_isPaused = !isActiveFrame;
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m_framesCounter++;
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m_aggregatedFrameTime += frameTime;
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double constexpr kAggregationPeriod = 0.5;
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if (m_isPaused || m_fpsAggregationTimer.ElapsedSeconds() >= kAggregationPeriod)
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{
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m_frameTime = m_aggregatedFrameTime / m_framesCounter;
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m_aggregatedFrameTime = 0.0;
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m_framesCounter = 0;
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m_fpsAggregationTimer.Reset();
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}
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}
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int GetScale() const { return m_scale; }
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void SetScale(int scale) { m_scale = scale; }
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void SetVisible(bool isVisible) { m_isVisible = isVisible; }
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bool IsVisible() const { return m_isVisible; }
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private:
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double m_frameTime = 0.0;
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int m_scale = 1;
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bool m_isVisible = false;
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base::Timer m_fpsAggregationTimer;
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double m_aggregatedFrameTime = 0.0;
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uint32_t m_framesCounter = 1;
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bool m_isPaused = false;
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};
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} // namespace gui
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