初版-带一个进度条

sources/Timer.cpp

@@ -0,0 +1,77 @@
+#include "Timer.h"
+namespace ezui {
+	Timer::Timer(Object* parentObject) :Object(parentObject)
+	{
+	}
+	bool Timer::IsStopped() {
+		return m_bPause.load();
+	}
+	void Timer::Start() {
+		if (m_task == NULL) {
+			m_event = CreateEvent(NULL, FALSE, FALSE, NULL);  // 创建事件对象
+			m_bExit = false;
+			m_task = new Task([this]() {
+				//等待信号与条件的lambda函数
+				const auto wait = [this]() {
+					while (!(this->m_bExit || !(this->m_bPause.load()))) {
+						WaitForSingleObject(m_event, INFINITE);
+					}
+					};
+				while (true)
+				{
+					wait();//等待信号与条件
+
+					if (this->m_bExit) {
+						break;//退出循环
+					}
+
+					//当等待时间过长(超过100毫秒) 将等待时间拆分为片段
+					auto start = std::chrono::steady_clock::now();
+					if (this->Interval > 100) {
+						while (!(this->m_bExit)) {
+							auto elapsed = std::chrono::duration_cast<std::chrono::milliseconds>(std::chrono::steady_clock::now() - start).count();
+							if (elapsed >= this->Interval) {
+								break;
+							}
+							DWORD remain = (DWORD)(this->Interval - elapsed);
+							Sleep(remain > 100 ? 100 : remain);
+						}
+					}
+					else {
+						//等待时间过小 直接sleep
+						Sleep(this->Interval);
+					}
+
+					if (this->m_bExit) {
+						break;//退出循环
+					}
+
+					if (this->Tick) {
+						this->Tick(this);
+					}
+				}
+				});
+		}
+		//通知计时器继续运行
+		m_bPause.store(false);
+		if (m_event) {
+			SetEvent(m_event);  // 设置事件, 唤醒等待的线程
+		}
+	}
+	void Timer::Stop() {
+		//暂停计时器的运行
+		m_bPause.store(true);
+	}
+	Timer::~Timer() {
+		m_bExit = true;
+		if (m_event) {
+			SetEvent(m_event);  // 设置事件, 唤醒等待的线程
+		}
+		if (m_task) {
+			delete m_task; //结束掉轮询任务
+		}
+		if (m_event) {
+			CloseHandle(m_event);  // 关闭句柄, 释放资源
+		}
+	}
+};