Initial release

engine/vendor/vst3sdk/vstgui4/vstgui/lib/cvstguitimer.h

@@ -0,0 +1,68 @@
+// This file is part of VSTGUI. It is subject to the license terms 
+// in the LICENSE file found in the top-level directory of this
+// distribution and at http://github.com/steinbergmedia/vstgui/LICENSE
+
+#pragma once
+
+#include "vstguifwd.h"
+#include "platform/iplatformtimer.h"
+#include <functional>
+
+namespace VSTGUI {
+
+//-----------------------------------------------------------------------------
+// CVSTGUITimer Declaration
+//! A timer class, which posts timer messages to CBaseObjects or calls a lambda function (c++11 only).
+//-----------------------------------------------------------------------------
+class CVSTGUITimer final : public CBaseObject, public IPlatformTimerCallback
+{
+public:
+	using CallbackFunc = std::function<void(CVSTGUITimer*)>;
+
+	CVSTGUITimer (const CallbackFunc& callback, uint32_t fireTime = 100, bool doStart = true);
+	CVSTGUITimer (CallbackFunc&& callback, uint32_t fireTime = 100, bool doStart = true);
+	CVSTGUITimer (CBaseObject* timerObject, uint32_t fireTime = 100, bool doStart = false);
+	
+	/** starts the timer */
+	bool start ();
+	/** stops the timer, returns whether timer was running or not */
+	bool stop ();
+
+	/** set fire time in milliseconds */
+	bool setFireTime (uint32_t newFireTime);
+	/** get fire time in milliseconds*/
+	uint32_t getFireTime () const { return fireTime; }
+
+//-----------------------------------------------------------------------------
+	/** message string posted to CBaseObject's notify method */
+	static IdStringPtr kMsgTimer;
+//-----------------------------------------------------------------------------
+	CLASS_METHODS_NOCOPY(CVSTGUITimer, CBaseObject)
+protected:
+	~CVSTGUITimer () noexcept override;
+
+	void beforeDelete () override;
+	void fire () override;
+	
+	uint32_t fireTime;
+	CallbackFunc callbackFunc;
+
+	PlatformTimerPtr platformTimer;
+};
+
+namespace Call
+{
+	using FunctionCallback = std::function<void ()>;
+
+	/** Trigger a function call at a later timer */
+	inline void later (FunctionCallback callback, uint32_t delayInMilliseconds = 10)
+	{
+		new CVSTGUITimer ([callback] (CVSTGUITimer* timer) {
+			timer->stop ();
+			callback ();
+			timer->forget ();
+		}, delayInMilliseconds, true);
+	}
+};
+
+} // VSTGUI