/*      $NetBSD: viewvar.h,v 1.6 2023/03/26 15:24:22 andvar Exp $       */

/*
* Copyright (c) 1994 Christian E. Hopps
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
*    notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
*    notice, this list of conditions and the following disclaimer in the
*    documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
*    must display the following acknowledgement:
*      This product includes software developed by Christian E. Hopps.
* 4. The name of the author may not be used to endorse or promote products
*    derived from this software without specific prior written permission
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

/* The view major device is a placeholder device.  It serves
* simply to map the semantics of a graphics display to
* the semantics of a character block device.  In other
* words the graphics system as currently built does not like to be
* referred to by open/close/ioctl.  This device serves as
* a interface to graphics. */

struct view_softc {
   struct  view_size size;
   view_t *view;

   dmode_t   *mode;
   monitor_t *monitor;

   pid_t   lock_process;
   int     flags;
};

enum view_unit_flag_bits {
   VUB_OPEN,
   VUB_ADDED,
   VUB_DISPLAY,
   VUB_LAST_BIT
};

enum view_unit_flags {
   VUF_OPEN = 1<<VUB_OPEN,
   VUF_ADDED = 1<<VUB_ADDED,
   VUF_DISPLAY = 1<<VUB_DISPLAY,
   VUF_MASK = ((1<<VUB_LAST_BIT)-1)
};