Some major work on item-edit.

2000-03-31  Jody Goldberg <jgoldberg@home.com>

	* src/workbook.c : Switch over to useing GNOMEUIINFO_ITEM_ where
	  possible.
	(cb_editline_focus_in) : Do not start editing if we are already
	  editing.

	* src/utils.c (parse_cell_name) : constness.

	* src/style.c (style_font_gdk_font) : constness.
	(style_font_gdk_font) : ditto.
	(style_font_gnome_font) : ditto.
	(style_font_get_height) : ditto.

	* src/sheet.c (sheet_set_zoom_factor) : redimension all cells, rather
	  than the sparse sheet region.  Do not auto-resize.
	(sheet_cell_add) :  Adjust to new calling convention for
	  cell_calc_dimensions.
	(sheet_stop_editing) : Rename from sheet_destroy_edit_cursor.

	* src/sheet-view.c (sheet_view_get_style_font) : constness.

	* src/gnumeric-sheet.c (gnumeric_sheet_create_editing_cursor) :
	  No need to set all those arguments.
	(destroy_item_editor) : Merge into gnumeric_sheet_stop_editing.
	(gnumeric_sheet_stop_editing) : Renamed from
	  gnumeric_sheet_destroy_editing_cursor.

	* src/cell.[ch] (cell_set_rendered_text) : Adjust to new calling
	  convention for cell_calc_dimensions.
	(cell_calc_dimensions) : Adjust calling convetion to make auto
	  resizing optional.
	(calc_text_dimensions) : Adjust calling convention to directly set size.

	* src/sheet-style.c (re_dimension_cells_cb) :  Adjust to new calling
	  convention for cell_calc_dimensions.

	* src/item-edit.c : Major rework to behave better at margins,
	  correctly handle cells whose display contents span differently than
	  their displayed values, multi-line display mechanics, and a blinking
	  cursor :-)