83 lines
2.7 KiB
Scheme
83 lines
2.7 KiB
Scheme
#| -*-Scheme-*-
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Copyright (C) 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994,
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1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
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2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016,
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2017, 2018, 2019, 2020 Massachusetts Institute of Technology
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This file is part of MIT/GNU Scheme.
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MIT/GNU Scheme is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or (at
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your option) any later version.
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MIT/GNU Scheme 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 GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with MIT/GNU Scheme; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301,
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USA.
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|#
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;;;; Modeline Window
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(define-class modeline-window vanilla-window
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(shows-buffer-modified?))
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(define (modeline-window/shows-buffer-modified? window)
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(with-instance-variables modeline-window window ()
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shows-buffer-modified?))
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(define (set-modeline-window/shows-buffer-modified?! window value)
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(with-instance-variables modeline-window window (value)
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(set! shows-buffer-modified? value)))
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(define-method modeline-window (:initialize! window window*)
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(usual==> window :initialize! window*)
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(set! y-size 1)
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(set! shows-buffer-modified? #f))
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(define (modeline-window:update-display! window screen x-start y-start
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xl xu yl yu display-style)
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display-style ;ignore
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(if (and (fix:= yl 0) (fix:< yl yu))
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(let ((superior (window-superior window))
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(xl (fix:+ x-start xl))
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(xu (fix:+ x-start xu)))
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(let ((buffer (window-buffer superior)))
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(modeline-string!
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superior
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(screen-get-output-line
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screen y-start xl xu
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(ref-variable mode-line-inverse-video buffer))
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xl xu)
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(set-modeline-window/shows-buffer-modified?!
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window
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(buffer-modified? buffer)))))
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#t)
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(define-method modeline-window :update-display!
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modeline-window:update-display!)
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(define-variable mode-line-inverse-video
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"True means use inverse video, or other suitable display mode, for the mode line."
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#t
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boolean?)
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(define (modeline-window:event! window type)
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type ;ignored
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(window-needs-redisplay! window))
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(define (modeline-window:notice-changes! window)
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(if (not (boolean=? (buffer-modified?
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(window-buffer (window-superior window)))
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(modeline-window/shows-buffer-modified? window)))
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(window-needs-redisplay! window)))
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