Experimental proof of concept to generate GraphViz dot code via Jetpack Compose's tree management. Valid dot file content can be generated simply by provided @Composable functions like SubGraph or Cluster etc.

• app - Runnable sample
• dot - Pure Kotlin constructs for representing Dot statements
• compose-dot - Provides @Composable functions to construct dot statements using Compose Compiler Plugin.

For example, usage in Kotlin as follows.

DirectedGraph("Hello") {
    node {
        "shape" `=` "rectangle"
    }
    Cluster("Container A") {
        "Item 1" link "Item 2"
    }
    Cluster("Container B") {
        "Item 3" link "Item 4"
    }
    Cluster("Container C") {
        "Item 5" {
            "color" `=` "blue"
        }
        Cluster("Inner Container") {
            "Item 6" {
                "color" `=` "red"
            }
        }
    }
    "Item 1" link "Item 4"
    "Item 2" link "Item 5"
    "Item 6" link "Item 3"
}

Will generate the following .dot source code.

digraph "Hello" {
  node [shape="rectangle"]
  "Item 1" -> "Item 4"
  "Item 2" -> "Item 5"
  "Item 6" -> "Item 3"
  subgraph "cluster_Container A" {
    graph [label="Container A"]
    "Item 1" -> "Item 2"
  }
  subgraph "cluster_Container B" {
    graph [label="Container B"]
    "Item 3" -> "Item 4"
  }
  subgraph "cluster_Container C" {
    graph [label="Container C"]
    "Item 5" [color="blue"]
    subgraph "cluster_Inner Container" {
      graph [label="Inner Container"]
      "Item 6" [color="red"]
    }
  }
}

Visualized via dot command

• Jetpack Compose for Non UI - Tree construction and source code generation

• Dot file generation was initially implemented using standard Kotlin API for https://github.com/arunkumar9t2/scabbard

Copyright 2021 Arunkumar

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.