81 lines
2.1 KiB
C++
81 lines
2.1 KiB
C++
#pragma once
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#include <vector>
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#include <QObject>
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#include <QString>
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class WorkSpace;
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class Timestep : public QObject {
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Q_OBJECT
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public:
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enum class PlayStatus : uint8_t {
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PS_Started,
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PS_Stoped,
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PS_Suspended,
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};
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public:
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explicit Timestep(WorkSpace* parent = nullptr) noexcept;
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~Timestep() override = default;
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void GetRange(double& minTime, double& maxTime, double& step);
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void Update(double dt);
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double GetCurrent() const {
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return current_;
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}
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bool IsPause();
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bool IsStoped();
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void Start();
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void Resume();
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void Pause();
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void Stop();
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void Up();
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void Down();
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// 设置播放速度（倍率），会选取最接近的预设倍率并触发 StepChanged
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void SetSpeed(double speed);
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// 设置数据驱动的默认最大时间（非手动区间），用于没有文件步长时的播放边界
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void SetDataMaxTime(double end);
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WorkSpace* GetWorkSpace() const {
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return workSpace_;
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}
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// 手动时间区间（可选）：允许用户指定起止时间，替代或重映射步骤
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void SetManualRange(double start, double end);
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void ClearManualRange();
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bool HasManualRange() const { return hasManualRange_; }
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double GetManualStart() const { return manualStart_; }
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double GetManualEnd() const { return manualEnd_; }
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Q_SIGNALS:
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void StatusChanged(int);
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void StepChanged(double);
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void TimeChanged(double);
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// 当时间范围或步进倍率更新时通知 UI（例如设置手动区间或清除）
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void RangeChanged(double minTime, double maxTime, double step);
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private:
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double current_{ 0.0 };
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double maxTime_{ 0.0 };
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// 播放速度（倍率），与 UI 显示一致，比如 0.5x、1x、2x
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double currentStep_{ 1.0 };
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// 有限倍率列表，防止无限放大/缩小导致无法恢复
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std::vector<double> speedLevels_{ 0.25, 0.5, 1.0, 2.0, 4.0, 8.0 };
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int speedIndex_{ 2 }; // 默认指向 1.0x
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PlayStatus playStatus_{ PlayStatus::PS_Stoped };
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WorkSpace* workSpace_{ nullptr };
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bool hasManualRange_{ false };
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double manualStart_{ 0.0 };
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double manualEnd_{ 0.0 };
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};
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