Hi all,

The dsl i am working on uses an image shape. I would like to change the image displaed by the image shape at runtime.

Is it possible??

Freddo

Hi Freddo,

It is possible to add an image programmatically to an image shape. First, you need to mark the ImageShape property "HasDoubleDerived" as true and regenerate the code by Transforming the Shape.tt template. Then, add a new custom class (say MyShapeName.cs) to your project and make it derive from MyShapeNameBase.cs (in the generated Shape.cs). Then override the Image getter in the derived class and return any System.Drawing.Image object from this method that will be used as an Image for your shape.

E.g. code snippet will look similar to this:

namespace Microsoft.Language16Shapes
{
public partial class ConditionShape : ConditionShapeBase
{
/// <summary>
/// Provide the specific Image for this Shape class
/// </summary>
protected override global::System.Drawing.Image Image
{
get
{

//Here you can give any implementation that will select the right image based on your requirements.
global::System.Resources.ResourceManager resourceManager = global::Microsoft.Language16.Language16DomainModel.SingletonResourceManager;
return DslDiagrams::ImageHelper.GetImage(resourceManager.GetObject("PortParentExplorerImage"));
}
}
}
}

Hope this helps,

Bhavin B

DSL Tools - SDET

Hi Bhavin B,

Thank you for the rapid response. The solution that you provided work fine but does not provide the possibility to change the image displayed by the image shape after the image shape has been initialized. This is the functionality I was really looking for.

Do you think it is possible?

Freddo

I cannot think of any way that you can change the image dynamically at runtime. Sorry. I will let you know if I find out about a way to do this.

Thanks,

Bhavin.

Hi Freddo,

One way you can try is to create your own geometry (inherited from ImageShapeGeometry) for the image shape(see here), and override the DoPaintGeometry() method to draw different images at runtime.

Regards,
Steven

Hi Steven,

You are right. However, I found that by simply overriding the ShapeGeometry property of my image shape as follow also do the trick.  

public override DslDiagrams:elp:ShapeGeometry ShapeGeometry

get

return new DslDiagrams::ImageShapeGeometry(this.Image);}

}

Obviously, you also need  to override the Image property of the image shape as suggested by Bhavin ealier.

 Freddo