On Mon, 24 Feb 2020 at 04:31, Steve Quezadas <steve...@gmail.com> wrote:
> I usually like to go through the source code to answer my own question, > but I can't tell by reading it. > > [Morph], from what I understand, deals with manipulating graphics on > smalltalk. But when I use ZnEasy to get a jpeg file, I notice that it > returns a [Form] and not a [Morph] to display a jpeg. Spec2 also wants > [Form] for displaying images rather than [Morph]. > > So what is the difference between a [Form] and a [Morph] since they both > seem to deal with graphics? > I don't know the exact answer, but if you review method ImageMorph>>form you will see that the ImageMorph is a wrapper around a Form. So some simple differences that may be inferred. - Many morphs are not bitmaps. - Morphs are GUI elements, i.e. interact with mouse and keyboard - Forms are not GUI elements - Forms can be manipulated without displaying them. In some other graphics system, an analogy could be putting an image on a button and asking "what is the difference between an 'image' and a 'button' ?" wrt Spec2, Morph is one backend that Spec2 might use to display a Form, or Spec2 might display the Form using a GTK widget. cheers -ben
