Josh Jordan <outerspaceman81@xxxxxxxxx>
writes:
> I could implement a save-symbol-as capability. ÂCan anyone familiar
> with gschem code outline a 'right' way to this? ÂShould I add another
> option to Hierarchy "down modified symbol" and change the other to
> "down original symbol"? ÂOr would it be better to add a 'save symbol
> as' function to the right-click menu that operates on selected
> objects? ÂShould I try not to change libgeda?
See attached. To use it, you need to:
1) Build and install my `guile-scheme-api' branch (see
http://goo.gl/ENfRl for more info).
2) Save the attached `save-selected-symbol.scm' file somewhere sensible.
3) Modify your gschem rc files to load the Scheme file and add the
`save-selected-symbol' function to the menu/keybindings (this is left
as an exercise to the reader).
This extension took me about an hour to write and about another 30
minutes to test.
Regards,
Peter
P.S. This branch will be merged into unstable sometime in the next few
weeks, once I've had enough time to write the API docs.
--
Peter Brett <peter@xxxxxxxxxxxxx>
Remote Sensing Research Group
Surrey Space Centre
;; gEDA - GPL Electronic Design Automation
;; gschem extension for saving symbols
;; Copyright (C) 2011 Peter Brett <peter@xxxxxxxxxxxxx>
;;
;; This program is free software; you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation; either version 2 of the License, or
;; (at your option) any later version.
;;
;; This program is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;; GNU General Public License for more details.
;;
;; You should have received a copy of the GNU General Public License
;; along with this program; if not, write to the Free Software
;; Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111 USA
;;
(use-modules (srfi srfi-1))
(use-modules (geda object))
(use-modules (geda page))
(use-modules (geda attrib))
(use-modules (gschem window))
(use-modules (gschem selection))
(define (save-selected-symbol)
;; Demote an attribute into a symbol. This first searches page for
;; an unattached attribute with the same name as attrib. If found,
;; the value of the found attribute is replaced by the the value of
;; attrib; otherwise, attrib is copied into page.
(define (demote-attribute! page attrib)
(let* ((name (attrib-name attrib))
(current (find
(lambda (x) (and (attribute? x)
(equal? name (attrib-name x))))
(page-contents page))))
(if current
;; We found a matching attribute, so set the value and
;; visibility. This makes sure that attributes that were
;; promoted and made invisible are made visible again.
(begin
(set-attrib-value! current (attrib-value attrib))
(set-text-visibility! current (text-visible? attrib)))
;; We didn't find a match, so copy the attribute into the
;; page.
(page-append! page (copy-object attrib)))))
;; This is the main worker function. It creates a new page,
;; initially populated by the contents of object, which must be a
;; component. Attributes attached to the object are copied into the
;; generated page, overriding existing attributes with that name.
(define (component->page object)
;; Initial page filename is
;; "<schematic filename>@<symbol basename>"
(let ((P (make-page (string-join
(list
(page-filename (object-page object))
(component-basename object))
"@"))))
;; Copy over the contents of the component.
(for-each
(lambda (x)
(if (attrib-attachment x)
;; Object is attached as an attribute; skip it, we'll
;; deal with it when we copy the object that it's
;; attached to.
#t
;; Otherwise, copy the object over, and any attached
;; attributes.
(let ((new-x (copy-object x)))
(page-append! P new-x)
(for-each
(lambda (a)
(let ((new-a (copy-object a)))
(page-append! P new-a)
(attach-attrib! new-x new-a)))
(object-attribs x)))))
(component-contents object))
;; Demote attributes
(for-each (lambda (x) (demote-attribute! P x))
(object-attribs object))
;; Return the created page
P))
;; Returns the selected component. Displays a message box if the
;; components selected != 1.
(define (get-selected-component)
(let* ((components (filter! component? (page-selection (active-page))))
(n (length components)))
(cond
((= n 0)
(begin
(gschem-msg "You must select a component.")
#f))
((> n 1)
(begin
(gschem-msg "You must select only one component.")
#f))
(else (car components)))))
;; Do cool stuff
(let ((component (get-selected-component)))
(and component
(begin
(set-active-page!
(component->page component))
(view-zoom-extents)
(file-save-as)
#t))))
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