svg.connectable.js

A JavaScript library for connecting SVG things.

Usage

Following example can be tested in the following jsfiddle: https://jsfiddle.net/L2sjjc3b/80/

Example source code also in https://github.com/loredanacirstea/svg.connectable.js/tree/master/example.

This library depends on:

• SVG.js
• svg.draggy.js (note this is the @jillix fork of the original svg.draggable.js project)

Different from original jillix library:

• the connector can be any SVG Path element defined through use() (usually connectors are reused). See example. Note the two M points added for attachment precision.
• you can define the type of attachment (center, perifery) separate for source and target
• you can have straight/curved connectors - available for the 'default' connector.
• functions for changing the connection settings after initializing it.
• padEllipse function from jillix is used automatically for ellipses ('perifery' attachment).

Documentation

connectable(options, elmTarget)

Connects two elements.

Params

• Object options: An object containing any of the following fields:

• container (SVGElement): The connector elements container. Defaults to source parent.

• markers (SVGElement): The marker elements container. Defaults to source parent.

• sourceAttach (String): Connector attachment for source element: 'center' / 'perifery'. Defaults to 'center'

• targetAttach (String): Connector attachment for target element: 'center' / 'perifery'. Defaults to 'center'

• type (String): Connector type: 'straight' or 'curved'. Defaults to 'straight'

• marker (String/SVGElement): Can be: an SVGElement / 'null' / 'default'. Defaults to 'null'

• color (String): Connector color. Defaults to '#000000'

• SVGElement elmTarget: The target SVG element.

Return

• Object The connectable object containing:
• source (SVGElement): The source element.
• target (SVGElement): The target element.
• connector (SVGElement): The connector element.
• marker (SVGElement): The marker element.
• computeConnectorCoordinates (Function)
• update (Function)
• setConnectorColor (Function)
• setMarker (Function)
• setConnectorAttachment (Function)
• setConnector (Function)
• setType (Function)

computeConnectorCoordinates(con)

The function that computes the new coordinates. It can be overriden with a custom function.

Params

• Connectable con: The connectable instance.

Return

• Object Returns the new SVG PathArray for the connector.

update()

Updates the line coordinates.

setConnectorColor(color, c)

Sets the connector and marker color.

Params

• String color: The new color.
• Connectable c: The connectable instance. Optional

setMarker(marker, markers, c)

Sets the marker

Params

• SVGElement/String marker: New marker element / 'null' / 'default'.
• SVGElement markers: Group parent for markers. Defaults to source.parent
• Connectable c: The connectable instance. Optional.

setConnectorAttachment(element, type, c)

Sets the connector's type of attachment.

Params

• String element: 'source' / 'target'
• String type: 'center' / 'perifery'. For paths, the 'perifery' option takes the PathArray point which is closest to the source/target attachment point. For ellipses, it uses the jillix algorithm for padEllipse (padding area aorund the ellipse). For all other, it uses the 4 middle side points from the bbox() rectangle.
• Connectable c: The connectable instance. Optional.

setConnector(connector, c)

Sets the connector.

Params

• SVGElement/String connector: New connector element / 'default'.
• Connectable c: The connectable instance. Optional.

setType(type, c)

Sets the connector and marker color.

Params

• String type: Connector type for default connector: 'straight' / 'curved'. Defaults to 'straight'
• Connectable c: The connectable instance. Optional.

How to contribute

1. File an issue in the repository and provide an example for it (you can fork the example jsfiddle to reproduce the bug) or:
2. Fork the project in your account and create a new branch: your-great-feature.
3. Commit your changes in that branch.
4. Open a pull request, and reference the initial issue in the pull request message.

MIT License

See the LICENSE file.