Re: [Gimp-gui] Curve-bend plugin as an on-canvas tool

[Ofnuts <ofnuts gmx com>]

On 02/11/15 19:36, Elle Stone wrote:
> Could you give some examples of "on canvas" tools and "not on canvas" 
> tools from GIMP 2.9? And maybe an example or two of a tool that is 
> currently not on canvas, that would be a good candidate for being "on 
> canvas"? I don't think I really understand the difference. Is drawing 
> a gradient an "on canvas" tool?
>
> Elle

"Filter>Distorts>Curve bend" is not on-canvas. You see the preview on a 
small version of your picture, and the effect is applied to the real 
drawable after you strike "OK". Not the exact distortion required? Too 
bad, Ctrl-Z and redo from scratch.

The "Cage" tool does something similar, but it's on-canvas: you see the 
effect directly on the actual drawable. You can drag until you get a 
match with something on another layer, and get the position just right 
in one interaction.

I believe this is the main difference between Tools and Plugins. 
Allowing plug-ins to be fully-fledged Tools would be a truly nice thing 
(or having an interface for "pluggable" tools).