128 lines
3.8 KiB
Scheme
128 lines
3.8 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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;;;; Utility Windows
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;;;; Blank Window
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(define-class blank-window vanilla-window
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())
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(define (blank-window:update-display! window screen x-start y-start
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xl xu yl yu display-style)
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window display-style ;ignore
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(screen-clear-rectangle screen
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(fix:+ x-start xl) (fix:+ x-start xu)
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(fix:+ y-start yl) (fix:+ y-start yu)
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false)
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true)
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(define-method blank-window :update-display!
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blank-window:update-display!)
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;;;; Vertical Border Window
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(define-class vertical-border-window vanilla-window
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())
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(define-method vertical-border-window (:initialize! window window*)
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(usual==> window :initialize! window*)
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(set! x-size 1))
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(define-method vertical-border-window (:set-x-size! window x)
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window ;ignore
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(error "Can't change the x-size of a vertical border window" x))
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(define-method vertical-border-window (:set-size! window x y)
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(if (not (fix:= x 1))
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(error "Can't change the x-size of a vertical border window" x))
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(set! x-size x)
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(set! y-size y)
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(setup-redisplay-flags! redisplay-flags))
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(define (vertical-border-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 (fix:< xl xu)
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(clip-window-region-1 yl yu (window-y-size window)
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(lambda (yl yu)
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(let ((xl (fix:+ x-start xl))
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(yu (fix:+ y-start yu)))
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(let loop ((y (fix:+ y-start yl)))
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(if (fix:< y yu)
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(begin
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(screen-output-char screen xl y #\| false)
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(loop (fix:+ y 1)))))))))
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true)
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(define-method vertical-border-window :update-display!
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vertical-border-window:update-display!)
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;;;; Cursor Window
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(define-class cursor-window vanilla-window
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(enabled?))
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(define-method cursor-window (:initialize! window window*)
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(usual==> window :initialize! window*)
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(set! x-size 1)
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(set! y-size 1)
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(set! enabled? false))
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(define-method cursor-window (:set-x-size! window x)
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window ;ignore
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(error "Can't change the size of a cursor window" x))
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(define-method cursor-window (:set-y-size! window y)
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window ;ignore
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(error "Can't change the size of a cursor window" y))
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(define-method cursor-window (:set-size! window x y)
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window ;ignore
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(error "Can't change the size of a cursor window" x y))
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(define (cursor-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 (with-instance-variables cursor-window window () enabled?)
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(fix:< xl xu)
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(fix:< yl yu))
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(screen-move-cursor screen x-start y-start))
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true)
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(define-method cursor-window :update-display!
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cursor-window:update-display!)
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(define-method cursor-window (:enable! window)
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(set! enabled? true)
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(setup-redisplay-flags! redisplay-flags))
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(define-method cursor-window (:disable! window)
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(set! enabled? false)
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(set-car! redisplay-flags false))
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