[GRASS5] New gui.tcl generic user interface

[Cedric Shock]

Good evening,

I have hammered out a new gui.tcl. This is the file that produces the generic 
graphical user interface for all of the other programs.


Screenshots:

g.region, as it first comes up:
http://www.shockfamily.net/cedric/grass/newgui1.png

Sample output:
http://www.shockfamily.net/cedric/grass/newgui2.png

A fake test-script that shows guisections for a command like g.region
http://www.shockfamily.net/cedric/grass/newgui3.png

Output showing errors and progress bar:
http://www.shockfamily.net/cedric/grass/newgui7.png

File selection, very wide due to extremely long description text. This module 
would benefit from labels:
http://www.shockfamily.net/cedric/grass/newgui4.png

Multiple selection, same deal:
http://www.shockfamily.net/cedric/grass/newgui5.png

Dropdown box, nothing has changed:
http://www.shockfamily.net/cedric/grass/newgui6.png


Changes:

Options and Output are now displayed in tabs instead of panes

There is a new command label which shows the current command as it is edited. 
It has a button for copying the command to the clipboard. (Might be worth 
noting in wish 2074)

Programs reporting guisections will have a tab made for options in each 
toplevel section. Finer section grouping is obeyed, but no labels are created 
or displayed.

The options frames scroll with the mouse wheel.

If possible the window opens wide enough to display its contents. This is 
accomplished by adding a binding to the scrolled frames which report their 
widths to their parent frames.

Programs using the label and description attributes on options or tabs will 
now have the description displayed as balloon help.

The help button is not enabled if no help file exists for the program. (closes 
wish 3799)

The type and required text for options is displayed right justified.

Module information is displayed differently. Both the label and description 
are displayed if available. Module is displayed with an icon if a matching 
one can be found in $(GISBASE)/etc/icons. See /gui/icons/README for more 
information.

Buttons for file selection are displayed with an open file icon.

Buttons for selecting database elements and symbols are displayed with an icon 
if a matching one can be found in $(GISBASE)/etc/icons.

It is now possible to determine when a command has finished executing. Output 
text has an added graphic along with the command text when the command is 
run. When the command finishes another graphic is displayed along with the 
text "Done."


Testing:
Ran lots of different commands both from the console and from gis.m. Only 
tested against tcl/tk 8.4 on Ubuntu Linux.


Patch:
Patch of lib/gis/gui.tcl and gui/Makefile is attached

gui.tcl also needs icons. To get the icons directory do the following in 
grass6/:
tar xvfz gui-icons.tar.gz

I believe a "make install" is all that is needed, but I'm not sure.


Enjoy,

Cedric Shock
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