[Marble-bugs] [Bug 253996] New: Marble's navigation zoom buttons disabled (+ or -), using MarbleWidget.

[Miguel Chavez Gamboa]

https://bugs.kde.org/show_bug.cgi?id=253996

           Summary: Marble's navigation zoom buttons disabled (+ or -),
                    using MarbleWidget.
           Product: marble
           Version: unspecified
          Platform: unspecified
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: NOR
         Component: general
        AssignedTo: marble-bugs at kde.org
        ReportedBy: miguel.chavez.gamboa at gmail.com


Version:           unspecified (using Devel) 
OS:                Linux

Im using marble SVN revision r1184939. And im using MarbleWidget in my
application.

If I show the floatItem "navigation" or "routing" with --smallscreen or the
navigation tab of the MarbleControlBox, the Zoom out (or sometimes the zoom in)
button gets disabled, but I still can zoom in/out with the mouse wheel.

I noted that if I place a slider and make the connection:

connect(ui->zoomSlider, SIGNAL(valueChanged(int)), theMap, SLOT(zoomView(int))
);

The disabled zoom button gets enabled.

Reproducible: Always

Steps to Reproduce:
Using the MarbleWidget in an application like the example on the techbase wiki.
Just showing the navigation FloatItem or navigation tab on the
MarbleControlBox.

Actual Results:  
Adding a slider to control the zoom (connecting the signal-slot), fixes this.

Expected Results:  
The zoom must not be disabled. I can zoom in/out with the mouse wheel.
In devices without mouse, it will not allow zoom in/out.

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