Qt Quick Button' hovered is true event if it's disabled

Tân Ngọc Đỗ

Hello,

I encountered an anoying problem with Qt Quick Button. I set the button to "enabled: false"
But sometimes, I hovered my mouse on it, the value of "hovered" is still true. I don't know it is a bug or not .
Further more, when I pick my mouse out of the button , some time the "hovered" is still true

Can you help me ?

Thanks

p3c0

Hi,

Which Qt Version/OS are you using ?

Tân Ngọc Đỗ

Hello,

I'm using 5.4.0

p3c0

That's strange, it works on Ubuntu 14.04 with Qt 5.3.2
Tried the following code
@
Item {
id: window
width: 320
height: 480

Button {
    id: button;
    enabled: false
    text: "hover here"
    MouseArea {
        anchors.fill: parent
        hoverEnabled: true
        onEntered: {
            console.log("entered")
        }
    }
}

}
@

Can you try the above ?

Tân Ngọc Đỗ

Hello,
Actually your sample code runs well even if I do not use MouseArea.
In my case, some time it's happened. I also have binding loop with "hovered" property of button

p3c0

and how do you do it without MouseArea ? Sorry I didnt get a chance to use Qt 5.4 yet. Does it have any new added signals ?

Tân Ngọc Đỗ

You can use "hovered" as a read-only property of button. It's a built-in property and you don't need to define a MouseArea, if you define a MouseArea you can not use some Button property and its signal . These feature belongs to QtQuick Button before 5.4 . You can refer : http://doc.qt.io/qt-5/qml-qtquick-controls-button.html

There is also one signal: clicked() . It's more convenient for user than defining a MouseArea

Thanks

p3c0

Hmm these were present in Qt 5.3.2
I tried the following new code as per it
@
Item {
id: window
width: 320
height: 480

Button {
    id: button;
    enabled: false
    text: "hover here"
}

Timer {
    interval: 500; running: true; repeat: true
    onTriggered: console.log(button.hovered)
}

}
@

Keeping enabled to false; prints false on timeout. And when enabled set to true, true or false gets printed as expected on hover.

Tân Ngọc Đỗ

Yes, It runs ok with 5.4 . Maybe my problem relates to binding loop of "hovered" .

p3c0

Ok. Can you post the related code then which produces the problem ?

Tân Ngọc Đỗ

Well I create a PlayBar.qml : there are 4 buttons in this files and I used a user-defined property : "isHovered" as a result of "hovered" on those 4 buttons :
@
//PlayBar.qml:
ToolBar {
id:toolBar
readonly property bool isHovered: ( btnNextFrame.hovered || btnPlayStop.hovered || btnPrevFrame.hovered
|| btnNextMovie.hovered || btnPrevMovie.hovered) )
..........................................................

//Main.qml:
ApplicationWindow {

PlayBar {
id: playBar
}

property bool hovered: playBar.isHovered

}
@

I receive a message :"Binding loop for "isHovered" in PlayBar.qml

p3c0

Well I was not able to produce the "Binding Loop" error from above code. But it could possibly be due to the same.

Tân Ngọc Đỗ

When I roll-back to 5.3.2 there are no problem with "binding loop" and the button is not hovered when it is disable . It's very strange!!!

p3c0

Then it could be a bug in Qt 5.4. Please report it on "Qt bug tracker":https://bugreports.qt-project.org/

Tân Ngọc Đỗ

Well, I will reproduce the problem for clearer description on bug tracker.

Anyways, thank you very much for your help!