Dialab now in chisel: https://chiselapp.com/user/LuoChunlei/repository/dialab

Dialab is not the diagram's application, although it looks like, it is from the begin.
I's main purpose is to browse and view the diagram; and you can modify it and look at the diffrence.

It has the following features:
1. browse a directory for *.dia files
2. include examples from diagram, pt of Tcllib, critcl, Kettle, Mustache
3. preset favorite directories in favoritedirs.cfg under directory of the script, [pwd], [info nameofexecutable]
4. use wheel to zoom, you also can scroll
5. Shift+Return to view you tested in the editor
6. the dia script run in main interpreter, so no safe security

todd:
1. drawpikchr method, preprocessor/macro
from syntax sugar direct run pikchr script, need implement, ele: file, dot, oval, print, round rect. att: same as, chop, fit, big/small, %. comment: //, /**/. go direction even with place.
thickness attribute
oval cylinder file dot
units other than inches: pc -> picas
new uses for "radius"
enhanced ability to control text alignment and display
Adjust the size of objects to fit their text annotations
%
chop works differently
the same as construct
new ways to describe line paths
new syntax to describe positions
new ways to identify prior objects
support for C and C++ style comments
variable names start with "$" or "@" characters
New assignment operators for variables: += -= *= /=
New keyword aliases: invisible vs invis, first vs 1st, previous vs last
New variables: bottommargin, chrht, chrwid, color, fill, fontscale, leftmargin, margin, rightmargin, thickness, topmargin
[] block

2. pikchr script -> pikchr -> tinydom -> svg2can -> canvas draw
from your sqlitepikchr example, some pikchr example throw exceptions. I can only find that pikchr print command and attribute big throw exceptions.


tklib::diagrams should through syntax sugar can run pikchr script
to compete with pikchr, the best solution implement a method drawpikchr, which can compatibly run pikchr script.
at least we can implement the innovations of pikchr. file, oval, dot, cylinder element; same, chop, radius new explain; fit, %, behind new attribute
transplant pikchr document to diagram