Forums | NoesisGUI

Hi,

1. IsHitTestVisible has a bit weird behavior in WPF, because normal calls to VisualTreeHelper.HitTest() will return objects with that property set to False, and Noesis is following that approach too. An alternative is to use the HitTest() method with callbacks, and filter the elements that have IsHitTestVisible set to False, like I explained here: https://www.noesisengine.com/bugs/view. ... 3476#c9787, but we need to think if we want to do that by default in Unity to consume input events.

2. This is happening because when you use only a Binding to the image, the corresponding Texture asset is not referenced by any element of the scene. You can add explicit dependencies in any xaml by using this:

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<UserControl
  xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
  xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
  xmlns:noesis="clr-namespace:NoesisGUIExtensions;assembly=Noesis.GUI.Extensions">

  <noesis:Xaml.Dependencies>
    <noesis:Dependency Source="Language-en.xaml"/>
    <noesis:Dependency Source="Language-fr.xaml"/>
    <noesis:Dependency Source="Language-jp.xaml"/>
  </noesis:Xaml.Dependencies>

</UserControl>

1 - The proposed code seems to solve the first problem
https://www.noesisengine.com/bugs/view. ... 3476#c9787
Will this code be included in any future updates or do I have to do this myself in every update?

2 - I still don't understand how to do it in my case
Suppose I get data from a web server when I start the game

For the scenario you were describing in your first post, you need to maintain a hard-reference to the texture somewhere. This is a requirement of the Unity asset system, we offer an extension to inject manual dependencies to XAML as Sergio described, but you can use any Unity native way (for example, have the reference in a ScriptableObject).

Downloading data from a web server is a different problem and depending on what you need, you probably want to use AssetBundles for that.

public class MyViewModel : INotifyPropertyChanged
{
    private string _icon;
    public string Icon
    {
        get { return _icon; }
        set
        {
            _icon = value;
            OnPropertyChanged(nameof(Icon));
        }
    }

    public MyViewModel()
    {
        Icon = "/Assets/View/GamePlay/build-all.png";
    }
    
    ...
}


<Image Source="{Binding Icon}" />

Let's assume that I have a list of images that I would like to use when needed as Binding with image path value .

Let's assume that I have a list of images that I would like to use when needed as Binding with image path value .

If these images are not directly referenced in any XAML (as appears to be the case here), you'll need to manually inject their dependencies (as described above) for each one.

Add this line to the root of your XAML:

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  <noesis:Xaml.Dependencies>
    <noesis:Dependency Source="/Assets/View/GamePlay/build-all.png"/>
  </noesis:Xaml.Dependencies>

And your binding will start to work.