Enhance Your GoJS Pipeline Visualization with TextBlocks

I am facing challenges in customizing the GoJS Pipes example to include text within the "pipes" without disrupting the layout. Although I referred to an older response on the same query here, it seems outdated or not detailed enough for me to implement with my limited knowledge of this library.

My current hardcoded pipeline setup looks like this:

https://i.sstatic.net/REydz.png

The pipeline code snippet:

// The pipeline code goes here...

In an attempt to integrate text blocks into the shapes, following the provided solution links ends up altering the nodeTemplate and causing unexpected changes in the layout and port positions. Despite tweaking the loc properties as well, the spacing between the pipes remains unmanageable. See image reference below:

https://i.sstatic.net/T93Px.png

How can I seamlessly incorporate text blocks while preserving the original layout and functionality of the pipeline?

javascripttypescriptgojs

Answer №1

The current structure of the pipe template is as follows:

Node (referred to as a Spot Panel)
 - 1st child: Shape
 - 2nd-nth child: Item array of x's

Spot panels consist of one main element (typically the first child) and N other elements positioned relative to it. At a minimum, the structure should look like this:

Node (referred to as a Spot Panel)
 - 1st child: Panel (another Spot panel)
    - Shape
    - TextBlock
 - 2nd-nth child: Item array of x's

Instead of the Shape, a Panel (a container with various content) is being substituted, which will encompass that shape. This approach works effectively if the Panel is precisely the same size as the original shape. If it is larger, such as when the text exceeds the shape, complications may arise.

Resolving this issue depends on the desired appearance. The simplest solution involves adjusting the TextBlock to stretch: go.GraphObject.Fill, ensuring it matches the shape's dimensions. Additionally, centering the vertically-aligned TextBlock within the gray shape can be achieved by adding 

verticalAlignment: go.Spot.Center
.

Example code snippet:

      myDiagram.nodeTemplate =
        $(go.Node, "Spot",
          {
            // Additional configurations here
          },
          // Additional templates and bindings   
        );

To view the modified version live, visit: https://codepen.io/simonsarris/pen/RwrKqrq?editors=1010

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