Preview attachments in main ticket (or wiki) window

[pkou at ua.fm]

It will be useful if Trac shows previews for attachments in main ticket window.

This can be implemented using the Trac plugin architecture in order to allow extending the methods for generating previews for attachments. Taking into account overall performance of the system, the architecture should allow to run generating of previews in background when an attachment is added.

As a part of standard distribution, a displaying of scaled down images can be implemented:

• The size of scaled picture can be configured;
• There is an excellent Python Imaging Library that will do the work.

Similar approach can be used in other places of Trac, e.g. previewing attachments in wiki.

[pkou at ua.fm]

Probably, this feature should be enabled per-project or per-user because it generates more traffic from a Trac site

[hyuga <hyugaricdeau@…>]

Undoing other stupid changes.

Why is anonymous allowed to change ticket properties anyways?

[cboos]

Replying to hyuga <hyugaricdeau@gmail.com>:

Undoing other stupid changes.

I've deleted those, thanks for the notice.

Why is anonymous allowed to change ticket properties anyways?

It's a trade-off. Besides TicketButchers, we also sometimes have TicketGnomes :-)

[Slava Zanko <slavaz>]

Preview attached images

[Slava Zanko <slavaz>]

Some warnings: 1) This patch includes another patch of #2141 (Upload multiple files at once) 2) require Python Imaging Library

See my screenshot

[Slava Zanko <slavaz>]

SlavaZ's part of screenshot

[Slava Zanko <slavaz>]

renew patch

[Slava Zanko <slavaz>]

renew patch

[Slava Zanko]

renew patch

[Slava Zanko]

change Сomponent from "General" to "Attachment"