Preset Strategy

dtucker · April 2014

What is the general strategy for savings presets (could be channel presets, camera presets, or something else).

In general I see "push to recall a preset", and "hold to save a preset".

However, if you are trying to save a preset, the PUSH event will fire before the HOLD event, meaning any time you try and save a preset, the previous preset will be recalled and then resaved. In short, the problem is both PUSH and HOLD fire, not PUSH or HOLD.

I can think of several messy ways to solve this problem, such as setting a timer on PUSH and reading it on RELEASE to see if they pushed or held. But I figure there may be a more elegant solution.

How do you all generally go about handling presets?

Jim Donachiue · April 2014

I use a TouchPanel Structure with a ButtonHold variable
On HOLD:
- the ButtonHold variable is set to True.
- Execute Code for a HOLD Event
On RELEASE:
- If ButtonHold is False
- Execute Code for a RELEASE Event that would otherwise be done in a PUSH Event
- the ButtonHold variable is set to False.

DEFINE_TYPE
Struct TTouchPanel
{
	Integer Initialized;//Deprecate AFL v3.0

	Integer State;
	Integer OnlineStatus;
	Integer Zone;

	//Indexes
	Integer Use;
	Integer Source;
	Integer Display;
	Integer Audio;
	Integer MatrixSource;
	Integer MatrixDisplay;

	Char ActivePage[LEN_NAME];
	Char ActivePopup[LEN_NAME];

	//A Button on the Panel is in Hold State
	Integer ButtonHold;
}

DEFINE_EVENT
BUTTON_EVENT[tpsAudio, btnsAudioUp]
{
	HOLD[5, REPEAT]:
	{
		System.CurrentPanelIndex = Get_Last(tpsAudio);
		//Set ButtonHold to True
		TTouchPanel_SetButtonHold(System.CurrentPanelIndex, True);
		//Code to Execute
		TTouchPanel_SetAudio(System.CurrentPanelIndex,
			Button.Input.Channel - OFFSET_VOLUME_UP);
		Handle_AudioVolumeUp(System.CurrentPanelIndex, True);
	}
	RELEASE:
	{
		System.CurrentPanelIndex = Get_Last(tpsAudio);
		if ( !TTouchPanel_GetButtonHold(System.CurrentPanelIndex) )
		{//If ButtonHold is False then execute code
			TTouchPanel_SetAudio(System.CurrentPanelIndex,
				Button.Input.Channel - OFFSET_VOLUME_UP);
			Handle_AudioVolumeUp(System.CurrentPanelIndex, False);
		}
		//Set ButtonHold to False
		TTouchPanel_SetButtonHold(System.CurrentPanelIndex, False);
	}
}

nickm · April 2014

Don't use the PUSH event. Only use the HOLD and RELEASE events. Like so:

BUTTON_EVENT [dvTP,1] {
  PUSH : {}
  HOLD[5] : {
    nFlag = 1

    // save preset
  }
  RELEASE : {
    IF(!nFlag) {
      // recall preset
    }

   OFF[nFlag]
  }
}

dtucker · April 2014

Thanks guys. That'll work fine.

a_riot42 · April 2014

I don't use the hold event for presets due to a bug in Netlinx, which I don't think has been fixed yet. If you have multiple instances of a module running that contains a structure for the presets, when you try to do an assignment in the hold event to the structure, its always the first module's structure that gets written to.
Paul

Preset Strategy

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