You can accomplish the same thing by adding a layermask to the layer, and initialize the layermask using the "Transfer Layer's Alpha Channel". Subsequently hiding, editing, disabling, and/or removing the layermask permits full control of whether the layer's RGB values are shown. Quoting "Alchemie foto\grafiche" <fotocomics@xxxxxxxx>: > > May be very useful for who does photo-montages a option to > "resurrect" erased or "cleared pixels, to correct badly cropped > details that often are noticed only to late for a UNDO > > May sound something magic but is trivial to implement, and since is > not based on UNDO may be applied also on already closed images, or > even to pre-cut images as png "renders" found on the Web. > > Limit is that will work only with layers or images with alpha > channel..in this case NOT a painful limit since obviously cuts for > photomontages are all saved without stripping the alpha > > THERE IS ALREADY a Filter, more exactly a MathMAp code that may do > on all the layer ,or even on selected part of the layer, > > (see here; > http://groups.google.com/group/mathmap/browse_thread/thread/e798e80f753b3d1f?hl=en message number > 2) > > but would be a useful option for the eraser, and maybe even for > other brush tools > > Concept, is trivial : > the eraser (or a brush tool) if used with "resurrect Erased/cleared" > option (if used at 100% opacity ) will modify where applied only > the A of RGBA without changing other RGB data, and that will > "resurrect" deleted pixel since their color info are still there, > only their opacity is changed > > > Should be not hard to implement > > About the obvious objection: > "As Gimp has no reason to modify color info of invisible pixels, > Gimp filters and tools have no reason to preserve them " > > That is true but in practice, when working with photomontages , > clear or erase is very often the last operation done before saving , > so most of the times will work,more is intuitive guess when it may > not work, or not perfectly > (= if filter or tool where applied also to the transparent pixels > after erasing or clearing ) > > > And from a similar, apparently magic feature (as far i know not > present in other image editors)can't be expected 100% success, a big > success may be that work very often...and will look as magic to > many users > > magic and useful, in my opinion _______________________________________________ Gimp-developer mailing list Gimp-developer@xxxxxxxxxxxxxxxxxxxxxx https://lists.XCF.Berkeley.EDU/mailman/listinfo/gimp-developer
