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DISPLAY: Latest version of display code from Phil Budne and Doug Gwyn including initial pdp1_dpy and pdp11_vt
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Mark Pizzolato
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display/xy.h
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142
display/xy.h
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/*
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* $Id: xy.h,v 1.13 2004/01/24 08:34:33 phil Exp $
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* interface to O/S independent layer of XY display simulator
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* Phil Budne <phil@ultimate.com>
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* September 2003
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*
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* Changes from Douglas A. Gwyn, Jan 12, 2004
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*/
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/*
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* Copyright (c) 2003-2004, Philip L. Budne
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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* Except as contained in this notice, the names of the authors shall
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* not be used in advertising or otherwise to promote the sale, use or
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* other dealings in this Software without prior written authorization
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* from the authors.
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*/
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/*
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* known display types
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*/
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enum display_type {
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DIS_VR14 = 14,
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DIS_VR17 = 17,
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DIS_VR20 = 20,
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DIS_TYPE30 = 30,
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DIS_VR48 = 48,
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DIS_TYPE340 = 340
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};
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/*
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* display scale factors
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*/
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#define RES_FULL 1
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#define RES_HALF 2
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#define RES_QUARTER 4
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#define RES_EIGHTH 8
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/*
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* must be called before first call to display_age()
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* (but called implicitly by display_point())
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*/
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extern int display_init(enum display_type, int scale);
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/* return size of virtual display */
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extern int display_xpoints(void);
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extern int display_ypoints(void);
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/* virtual points between display and menu sections */
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#define VR48_GUTTER 8 /* just a guess */
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/* conversion factor from virtual points and displayed pixels */
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extern int display_scale(void);
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/*
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* simulate passage of time; first argument is simulated microseconds elapsed,
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* second argument is flag to slow down simulated speed
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* see comments in display.c for why you should call it often!!
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* Under X11 polls for window events!!
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*/
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extern int display_age(int,int);
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/*
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* display intensity levels.
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* always at least 8 (for VT11/VS60) -- may be mapped internally
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*/
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#define DISPLAY_INT_MAX 7
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#define DISPLAY_INT_MIN 0 /* lowest "on" level */
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/*
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* plot a point; arguments are x, y, intensity, color (0/1)
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* returns true if light pen active (mouse button down)
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* at (or very near) this location.
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*
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* Display initialized on first call.
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*/
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extern int display_point(int,int,int,int);
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/*
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* force window system to output bits to screen;
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* call after adding points, or aging the screen
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*/
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extern void display_sync(void);
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/*
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* currently a noop
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*/
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extern void display_reset(void);
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/*
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* ring the bell
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*/
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extern void display_beep(void);
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/*
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* Set light-pen radius; maximum radius in display coordinates
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* from a "lit" location that the light pen will see.
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*/
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extern void display_lp_radius(int);
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/*
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* set by simulated spacewar switch box switches
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* 18 bits (only high 4 and low 4 used)
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*/
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extern unsigned long spacewar_switches;
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/*
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* light pen "tip switch" activated (for VS60 emulation etc.)
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* should only be set from "driver" (window system layer)
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*/
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extern unsigned char display_lp_sw;
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/*
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* deactivates light pen
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* (SIMH DR11-C simulation when initialized sets this and
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* then reports mouse coordinates as Talos digitizer data)
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*/
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extern unsigned char display_tablet;
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/*
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* users of this library are expected to provide these calls.
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* simulator will set 18 simulated switches.
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*/
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extern unsigned long cpu_get_switches(void); /* get current switch state */
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extern void cpu_set_switches(unsigned long); /* set switches */
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