44 lines
1.5 KiB
Scheme
44 lines
1.5 KiB
Scheme
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;;; GNU Guix --- Functional package management for GNU
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;;; Copyright © 2018 Mathieu Othacehe <m.othacehe@gmail.com>
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;;;
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;;; This file is part of GNU Guix.
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;;;
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;;; GNU Guix is free software; you can redistribute it and/or modify it
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;;; under the terms of the GNU General Public License as published by
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;;; the Free Software Foundation; either version 3 of the License, or (at
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;;; your option) any later version.
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;;;
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;;; GNU Guix is distributed in the hope that it will be useful, but
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;;; WITHOUT ANY WARRANTY; without even the implied warranty of
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;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;;; GNU General Public License for more details.
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;;;
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;;; You should have received a copy of the GNU General Public License
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;;; along with GNU Guix. If not, see <http://www.gnu.org/licenses/>.
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(define-module (gnu installer newt utils)
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#:use-module (ice-9 receive)
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#:use-module (newt)
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#:export (screen-columns
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screen-rows
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destroy-form-and-pop
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set-screen-size!))
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;; Number of columns and rows of the terminal.
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(define screen-columns (make-parameter 0))
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(define screen-rows (make-parameter 0))
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(define (destroy-form-and-pop form)
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"Destory the given FORM and pop the current window."
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(destroy-form form)
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(pop-window))
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(define (set-screen-size!)
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"Set the parameters 'screen-columns' and 'screen-rows' to the number of
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columns and rows respectively of the current terminal."
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(receive (columns rows)
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(screen-size)
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(screen-columns columns)
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(screen-rows rows)))
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