We are looking into the requirements to add the functionality to export the svg from the web-based modeler. With the end game on converting the svg to various formats (PDF / jpg / …) one of the main challenges is the collapsed subprocesses.
Below is my first analyze on how I think to integrate the functionality but some feedback is most appriciated
Export bpmn-model to PDF / image
- We want to export the BPMN model to an image / pdf.
- We want the export to be as close to the design time
- All (nested / collapsed) processes in the BPMN model must be shown in the pdf / images.
Currently available components
Image Generators (CMM / BPMN / DMN?)
- Flowable provides an image generation library who converts the json structure to an jpeg / svg
|Can reuse the json as saved in the database||The user receives a diffrent image compared to the flow at designtime|
|used for tumbnail generation||There is a converter for each json structure. If the ui (stensilset) changes the corresponding generator must be updated.|
Flowable has a webbased modeler who allows the user to draw processes. This is by (assumptionbase) the most common way to design a process / CMM / *. This also provides functionality to save a model to svg representation. The svg however does have the following kinks:
- The namespace is wrong
- The oryx namespace has no use in the context of generating a svg (as image) to export to pdf / jpeg …
- Collapsed subprocesses result in a new svg - resulting in multiple images per model.
|One export location to rule all generators||The image can’t be generated from the backend.|
|The user receives an image excactly to the flow at designtime||There are (minor) issues with the svg format in context of pdf/image generation|
- Add a button to the bpmn modeler export to …
- Implement functionality to extract all svg’s -> One svg per collapsed subprocess.
- Send svg’s to the backend and write them to an pdf?
- Not yet 100% sure on the implementation but the proposal describe the flow in large, optimistic way.