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ClemensFischer / XAML-Map-Control

XAML Map Control Library
Microsoft Public License
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WPF Tooltips disappearing quickly #95

Closed andyesys closed 1 year ago

andyesys commented 1 year ago

Hi @ClemensFischer,

thanks for your great work. Unfortunately, I have a problem with disappearing tooltips in the MapControl.

How to replicate

Add ToolTip="Hello" to the blue circle MapPath in your MainWindow.xaml.

Expected behaviour

When the mouse hovers over the blue circle, the tooltip should be shown and stay visible for some time.

Actual behaviour

The tooltip very quickly disappears in all but the lower right quadrant of the circle.

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ClemensFischer commented 1 year ago

There is no tooltip handling at all in the MapControl library. This effect apparently occurs only where "relative coordinates" of the path geometry are negative. On WinUI and UWP such a Path is even only drawn partially. This is however an issue of the platform.

The following pure WPF XAML reproduces the problem. Perhaps ask a question on StackOverflow.

<Canvas>
    <Path Canvas.Left="200" Canvas.Top="200" Fill="AliceBlue" ToolTip="Hello">
        <Path.Data>
            <EllipseGeometry RadiusX="100" RadiusY="100"/>
        </Path.Data>
    </Path>
</Canvas>