Repeat Button triggers immediately, bug or feature?

[ulix]

I want the user to hold a button for at least 3 seconds before it triggers its interaction. So I created a Repeat Button, because the documentation says on delay: "Delay specifies the time (ms) to wait when the button is pressed before starting the loop of triggers."

But when I configure a delay of e.g. 2000 ms and an interval time of 8000 ms, it triggers immediately and then after 2 seconds (and then every 8 seconds). Is this misleading in the documentation or a wrong behavior of the button?

[LouisB · Accepted solution]

Hello @ulix ,

First, welcome to the TouchGFX community :)

The repeat button is working as it's supposed to be, it repeats the trigger every X ms. The delay is the delay between each triggers, e.g with a 2000ms the button will be triggered every 2000ms.

The behaviour you want can be done by using HandleClick on your button with HandleTick. by setting up a timer, that increments with HandleTick and allows you to click.

I hope it answers your question,

Regards,

[JTP1]

Hello

You can also achieve your goal by modifing repeatButton.cpp

Browse to \Middlewares\ST\touchgfx\framework\source\touchgfx\widgets\- folder of your project and copy RepeatButton.cpp- file to  \TouchGFX\gui\src\common\ folder. Edit that copy in \common\ folder.

Locate handleClickEvent and comment out executeAction- function call.

void RepeatButton::handleClickEvent(const ClickEvent& event)
{
    pressed = false; // To prevent AbstractButton from calling action->execute().
    invalidate();    // Force redraw after forced state change
    Button::handleClickEvent(event);
    if (event.getType() == ClickEvent::PRESSED)
    {
         //Comment out call to 'executeAction' to get initial delay before first click
         //executeAction();

        ticks = 0;
        ticksBeforeContinuous = ticksDelay;
        Application::getInstance()->registerTimerWidget(this);
    }
    else
    {
        Application::getInstance()->unregisterTimerWidget(this);
    }
}

Then if needed to get only one delayed click, just add 'unregisterTimerWidget' after first click is generated after initial delay.

void RepeatButton::handleTickEvent()
{
    Button::handleTickEvent();

    if (!pressed)
    {
        return;
    }
    if (ticks == ticksBeforeContinuous)
    {
        executeAction();

        ticks = 0;
        ticksBeforeContinuous = ticksInterval;

		// Add unregisterTimerWidget after first generated click
		Application::getInstance()->unregisterTimerWidget(this);
    }
    else
    {
        ticks++;
    }
}

 Perhaps this kind of features would be nice to have directly from the Tgfx Designer in the future releases.

Br JTP

[Andrew Neil]

---

@JTP1 wrote:

Perhaps this kind of features would be nice to have directly from the Tgfx Designer in the future releases.

---

+1

Indeed - this would seem like a pretty common requirement.

@LouisB 

[LouisB]

Hello all,

Thanks for your feedbacks, I will talk about this feature to the Team and see if there's an interest for it in a next release.

Regards, 

[Andrew Neil]

thanks.

I see very common applications for both; eg,

• The auto-repeat on a keyboard typically give you one character immediately you press the key, and then the auto-repeat starts if you keep it held down;
   
• Typically a power-off button will not actually start the power-down sequence until it has been held for the required time - to ensure that an accidental "brush" doesn't shut the system down!

That's just 2 straight off the top of my head.