1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/isac-java/src/java/isac/gui/mawen/editor/README	Tue Feb 13 09:42:07 2018 +0100
     1.3 @@ -0,0 +1,26 @@
     1.4 +editor/README
     1.5 +relates 3 kinds of functionality to the code, where
     1.6 +formulas represented as editor.syntax.Ast.
     1.7 +
     1.8 +"§"and "Fig" refer to http://www.ist.tugraz.at/projects/isac/publ/mmahringer-master.pdf
     1.9 +
    1.10 +1. render formulas 
    1.11 +1.1. AstComponent stores and updates Ast
    1.12 +1.2. CalcUtil transforms Ast into Box recursively bottom up
    1.13 +1.3. BoxUtil paints a Box (in the sense of LaTeX)
    1.14 +  in the course of recursion (including callback, see 3.2.)
    1.15 +
    1.16 +2. edit formulas
    1.17 +   §4.3.3, Editing via keyboard events p.56..p.60
    1.18 +2.1. EventUtil interprets keys according to a STD in Fig.4.12
    1.19 +2.2. EditingUtil updates Ast via 1.1. 
    1.20 +
    1.21 +
    1.22 +3. show termstructure by mouse movements:
    1.23 +   the smallest subterm is shown under the mouse
    1.24 +   §4.3.2, Display frames p.55..p.56
    1.25 +3.1. EventUtil handles mouse movements;
    1.26 +     EventUtil.doInBox: if a Box is under the mouse, then frame is stored in Box
    1.27 +3.2. BoxUtil paints via 1.3.
    1.28 +     using the callback in each Box via Box.drawFrame box
    1.29 +