Hi, Nathan C Summers <rockwlrs@xxxxxxxxxx> writes: > > - Provide an API that allows the plug-in developer to use the same > > function for manipulating the image as well as the preview. The > > preview would have to provide a drawable API and pixel-regions > > etc. in order to achieve this goal. > > There is a serious problem here: what if two plug-ins are open at the same > time and want to draw on the same image? We wouldn't just need tile-level > locking but layer or image-level locking as well, and the preview widget > would have to gracefully fall back or force the other plugin to give up > its hold on the display. You could run into serious UI issues here. the idea was not to use the original drawable but to have the preview create a scaled version of the selected area and expose it to the plug-in as if it was a drawable. This will need some hacks in the proxy drawable code in libgimp but I think it could be done. Salut, Sven
