MouseArea emitting additional 'pressed' signal

[p3c0]

Hi @aabc,
As the docs says, a click is defined as a press followed by a release, so if you define all the 3 handlers they are surely going to trigger i.e a press followed by release followed by click event.

[aabc]

Hi p3c0,

The problem is that the 2nd 'pressed' and 'released' events are triggered without someone is actually pressing the MouseArea.

[p3c0]

@aabc Strange. Can you post some code to test ? Which Qt version and OS are you using ?

[aabc]

I'm using Qt 5.3.1 on Linux (Freescale i.mx53 with touch device).

Rectangle
{
    width: 200
    height: 200
    color: "red"

    MouseArea
    {
        anchors.fill: parent
        onPressed: console.log("Pressed")
        onReleased: console.log("Released")
        onClicked: console.log("Clicked")
    }
}

[p3c0]

@aabc I tested it on android device with Qt 5.4.1 and it works as expected. Order of signal trigger is pressed, released and clicked. No other ghost events.

[aabc]

It doesn't happens all the time. The phenomenon reproduce once per ~15 times.
Another strange issue when it does happen - There are 'pressed' and 'released' events but no 'clicked' event.

[p3c0]

@aabc Could be a bug in Qt 5.3.1. Can you try with latest one ? Just to confirm. So that you can submit a bug report.

[RamK]

@aabc , I checked with Qt 5.4.1 MSVC2012 OpenGL 32bit and it works correctly.
Tried many times and able to get pressed , released and clicked signals in order.
You will not get clicked signal in one case ,
if you do press in Rectangle region (200 * 200 ) and do mouse move outside and perform mouse release.
then you will get only pressed & released.

[p3c0]

@RamK Because that is what click is defined. From the docs:

A click is defined as a press followed by a release, both inside the MouseArea (pressing, moving outside the MouseArea, and then moving back inside and releasing is also considered a click).

[aabc]

There sould have been 'clicked' signal:
I logged the X and Y coordinates of the 'pressed' and the 'released' and they both were within the MouseArea.