Maps with custom background

[jri]

The user should be able to attach a background image file tp a topicmap.

[Jörg Richter]

Topicmaps can have a background image (#103).

To set a background image for a topicmap:
1) Reveal the Topicmap topic (e.g. via the "Associations" listing).
2) Create a File topic corresponding to the image file (either via file browser or via drag'n'drop).
3) Associate the topicmap with the file.
4) Retype the association to "Aggregation". Make the topicmap the "Whole" and the file the "Part".

To choose another background image for a topicmap:
1) Proceed as described above.
2) Deactivate the previous background image (e.g. by retyping the association to "Association").

That's it basically. However, for the moment there are a lot of issues:

• To actually see the map background you have to reload the client (​http://localhost:8080/)
• The background appears only after a forced map refreshing (e.g. by moving it a little)
• IMPORTANT: there must be only *one* background image per map. Otherwise the map gets corrupted. So, the "Deactivate" step (2) above is crucial.

You must reset your DB.

See ticket 103.

• Changeset: b4d76d5c67c55aee501b379b0e35b8d1b05d753e
• URL: ​https://github.com/jri/deepamehta/commit/b4d76d5c67c55aee501b379b0e35b8d1b05d753e

[Jörg Richter]

Topicmaps module: fix background images (#103).

No forced map refresh is required to see the background image.

(For newly assigned background images a client reload is still required)

See ticket 103.

• Changeset: 2b0b3d7c3f715b4b00b41eecfdba6d2f7bc857fb
• URL: ​https://github.com/jri/deepamehta/commit/2b0b3d7c3f715b4b00b41eecfdba6d2f7bc857fb

[jri]

For the remaining issues a separate ticket should be opened.