[XGP-announce] XGP 0.5.0

[Lindsey S. <sp...@al...>]

XGP 0.5.0 is now available at http://xgp.sourceforge.net/

 From the NEWS file:

 From release 0.4.1 to 0.5.0:

	===================
	OVERVIEW OF CHANGES:
	
	The changes in this release are: improvements to control window
	services, a new (simple) "Find in Files..." feature, a new
	'pixels' graphics item, and (of course) bug fixes.
	
	"Control window" improvements include appropriate auto-resizing
	of items, better 'table' item value management, and new
	cw_get_item_desc/[3, 4] predicates. The new "Find in Files..."
	feature supports using regular expressions to search through all
	open source documents in XGP. The 'pixels' graphic item takes a
	list of numbers and interprets them as pixel specifications for
	display.
		
	===================
	DETAILS:

	* User Interface:	
		+ Added 'Find in Files...' option to 'Tools' menu to invoke
		the simple grep-based multi-file search predicate
		search_files_dialog/0.

	* Environment Initialization:	
		+ Extended xgp__initialize_environment/0 (the default IDE
		environment initialization) to add the 'Library' menu to the
		main menu bar if the XGP library management files are in the
		user's Application Support folder.

	* Consulting:
		+ Changed consulting (by way of xgp__consult_load/1) to
		remove the predicates for the file being re-consulted. (Uses
		the new xgp__remove_predicates_for_source/1.)

	* GUI APIs:	
		+ Dialogs:		
			- Implemented getditem/7 and replace_dialog_item/3.

		+ Control Windows:		
			- Extended value gotten for table item to be a list of
			two items: the 'selected' row IDs and all of the row
			values.

			- Extended value setting for table control
			to set both the row values and the row selection.
			
			- Added auto-resizing of control window items. Whether
			an item is resizable in height or width depends on that
			item (e.g. menu-based items  always allow height auto-
			resizing and allow width auto-resizing if there is more
			than one column).Whether an item has a fixed or
			adjustable margin on the top, bottom, left, or right
			depends on whether there are other adjustable items in
			that margin or not. These resizing characteristics are
			recalculated for every cw_add_item/3 and
			cw_delete_item/2 call.

			- Changed tables to automatically adjust their columns.

			- Added cw_get_item_desc/[3, 4]
			predicates.

			- Added xgp__cw_get_item_desc/5.

		+ Graphics:		
			- Created new 'pixels' graphics item for displaying
			pixel maps of images.

			- Added del_all/1 as a synonym for del_all_pics/1.
			
			- Extended equivalent_transformed_descriptions/2
			clause (in support of equivalent_pics/2) for two numbers
			to allow greater percentage disagreement for float
			values < 1. The allowed disagreement is 1% for values >=
			1 and progressively more for smaller and smaller values.
		
		+ Utilities
			- Added default_font_info_by_type/5.

	* Documentation:
		+ Added description of predicates getditem/7,
		cw_get_item_desc/4, font_info/7, default_font_info_by_type/5.
		Added description of control window item pixels/12.
	
	* Bug fixes:	
		+ Control Windows:		
			- Fixed single column table controls to not crash.

			- Fixed table that does not have a row number column to
			not crash.
		
			- Fixed font handling for controls to not crash when
			given an invalid font.
			
			- Fixed scrolledit and scrolltext controls to be auto
			resizable.
		
			- Fixed cw_add_item/3 to process scrolledit and
			scrolltext in the same fashion as is done already for
			edit and text items.
			
			- Fixed 'chars' case of cw_get_item_desc/4.
			
			- Fixed a bug with creating a control window, killing it,
			then creating a new control window with the same name: this
			process would sometimes fail due to a timing error.

		+ Graphics		
			- Fixed del_pic/2 to not crash.
			
			- Fixed equivalent_pics/2 to better
			handle comparing numbers: the comparison is now symmetric
			(it doesn't matter what order the numbers are in).
			
		+ Dialogs:		
			- Fixed to support 'table' item.
		
			- Fixed banner/2 to kill the banner dialog if there is
			an exception in the called predicate.
			
			- Changed predefined dialog predicates (warning/1,
			message/[1, 3], scroll_menu/[4,7,8],
			yesno/[1, 4], and prompt_read/[2,3]) to force
			unique window names.

		+ Source Documents:		
			- Fixed wkill/1 to properly destroy source document
			windows.

			- Fixed several bugs in the handling of 'new' "Untitled"
			documents.
		
		+ Utilities:		
			- Fixed pname/2 to work when converting an operator
			symbol (e.g. '*').

Lindsey Spratt
http://homepage.mac.com/lspratt