Custom Shape Resizing

[Hilary]

Is there a way to prevent vertical resizing on a specific custom shape? 

The IsResizingEnabled property is specific to a shape, but disables all resizing. Creating a custom ResizingService appears to apply to the entire diagram and all the shapes. Basically we have a text shape and want to be able to size it horizontally and left/center/right align -> all working. But not allow vertical resizing – the text is vertically aligned to the top and does not wrap.

[Zarko]

Hi Hilary,
The easiest way to do this will be to use a custom resizing service and just check if there's a TextShape in the currently resized shapes:

protected override Point CalculateNewDelta(Point newPoint)
{
    var newDelta = base.CalculateNewDelta(newPoint);
    var textShapes = this.resizingItems.Any(i => i is RadDiagramTextShape);
    return new Point(newDelta.X, textShapes ? 0 : newDelta.Y);
}

I've attached a sample project demonstrating this so you could test it and see if this is what you're looking for.

Regards,
Zarko
Telerik

 

 

[Hilary]

Thanks Zarko, that works. However prior to making a manual resize, if you change the text content or the font size the shape will resize horizontally and vertically as needed. A sort of Auto-fit. Once you manually resize the textbox that no-longer happens, so if you set a larger font the height won’t adjust to fit.

How do you recommend solving this? And is it possible to turn the auto-fit back on? 

[Zarko]

Hello Hilary,
Prior to a manual resize a shape's width (and height) is double.NaN and because of this the actual size comes from its content (a string in the default case). Once you resize a shape its width becomes a number and this "turns off" the auto-fit to turn it on again you'll have to change the size to double.NaN:

private void Button_Click(object sender, RoutedEventArgs e)
{
    this.shape.Width = double.NaN;
    this.shape.Height = double.NaN;
}

I hope I was able to help you.

Regards,
Zarko
Telerik