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/* Link this to sun.c if you are running on a SunView system */
/*
* author = "Pierre MacKay (from the original by Paul Richards)"
* version = "0.5",
* date = "5 May 1991 - June 1992"
* filename = "sun_sunview.c",
* contact = "Pierre MacKay",
* email = "mackay@cs.washington.edu"
* Graphics window interface to Metafont for Suns running
* SunView (Sun Unix release 3.n)
* This code is essentially a translation from the old
* sun.c which used <suntool/gfxsw.h>. The model for the
* translation is the example in Appendix C (C.2.) of the
* Sunview 1 Programmer's guide as applied to bouncedemo.c
* There are nice additional benefits, such as a moveable
* and scalable graphics window, and the chance to see
* the controlling window while METAFONT is at work
*
* Destroy checking is bogus, and SunView does not clean up the mess
* if you "quit" from the pulldown menu. You will be left with
* an hysterical orphaned process screaming for a window that isn't
* there. You will have to go elsewhere and KILL that process.
* Otherwise it seems clean.
*
* For the moment this and the XView interface seem to be
* mutually exclusive, since they use library routines with
* the same names, which mightily confuses the loader.
* It doesn't help much to change the name of MFTERM since
* XView wants to name its own terminal "sun" just like
* the SunView terminal
*/
#define EXTERN extern
#include "../mfd.h"
#undef _POSIX_SOURCE
#ifdef SUNTOOLSWIN
/* <sundev/cg9reg.h> wants to have a field named `reset'. Since we
don't need the WEB(2C) reset, no problem. */
#undef reset
#include <stdio.h>
#include <sys/types.h>
#include <suntool/sunview.h>
#include <suntool/canvas.h>
static void repaint_proc();
static void resize_proc();
static Notify_value mf_notice_destroy();
extern Notify_error notify_dispatch();
static int destroy_ready; /* could be used for tighter control */
/*
* global handle on the graphics subwindow
*/
struct MFsubwindow {
int mf_flags;
#define MF_RESTART 0x01
struct pixwin *mf_pixwin;
struct rect mf_rect;
} sun_mf_subwin; /* Make sure that names storage is allocated. */
static struct MFsubwindow *metafont_sw = &sun_mf_subwin; /* window handle */
/*
* Gray background for graphics area
*/
static short mf_graybackground_image[] = {0x5555, 0xaaaa};
mpr_static(mf_sunview_gray_bkgr, 2, 2, 1, mf_graybackground_image);
Rect *rect;
Frame frame;
Canvas canvas;
Pixwin *pw;
#include <mfdisplay.h>
/*
* init_screen: boolean; return true if window operations legal
*/
int
mf_sun_initscreen(void)
{
frame = window_create(NULL,FRAME,
FRAME_LABEL, "METAFONT",
FRAME_SHOW_LABEL, TRUE,
WIN_ERROR_MSG, "! Window access requires METAFONT to run under suntools\n",
0);
canvas = window_create(frame, CANVAS,
CANVAS_RESIZE_PROC, resize_proc,
CANVAS_FAST_MONO, TRUE,
WIN_ERROR_MSG, "Can't creat canvas",
0);
pw = canvas_pixwin(canvas);
metafont_sw->mf_pixwin = canvas_pixwin(canvas);
/* interpose a destroy procedure so we can shut down cleanly */
(void) notify_interpose_destroy_func(frame, mf_notice_destroy);
/*
* Instead of using window_main_loop, just show the frame.
* Metafont's procedures will be in control, not the notifier.
*/
window_set(frame,WIN_SHOW, TRUE, 0);
rect = (Rect *)window_get(canvas, WIN_RECT); /* Get current dimensions */
pw_replrop(pw,
0, 0,
rect->r_width,
rect->r_height,
PIX_SRC,
&mf_sunview_gray_bkgr, 0, 0); /* clear subwindow */
return(1); /* Caller expects a TRUE value */
}
/*
* updatescreen; -- just make sure screen is ready to view
*/
void
mf_sun_updatescreen(void)
{
(void)notify_dispatch();
/* if (destroy_ready != 0) return; */
rect = (Rect *)window_get(canvas, WIN_RECT); /* Get current dimensions */
if (metafont_sw->mf_flags & MF_RESTART) {
metafont_sw->mf_flags &= ~MF_RESTART;
pw_replrop(pw,
0, 0,
rect->r_width,
rect->r_height,
PIX_SRC,
&mf_sunview_gray_bkgr, 0, 0); /* clear subwindow */
}
}
/*
* blankrectangle: reset rectangle bounded by ([left,right],[top,bottom])
* to background color
*/
void
mf_sun_blankrectangle (screencol left,
screencol right,
screenrow top,
screenrow bottom)
{
pw_writebackground(pw, left, top,
right-left+1, bottom-top+1, PIX_CLR);
}
/*
* paintrow -- paint "row" starting with color "init_color", up to next
* transition specified by "transition_vector", switch colors,
* and continue for "vector_size" transitions.
*/
void
mf_sun_paintrow (screenrow row,
pixelcolor init_color,
transspec transition_vector,
screencol vector_size)
{
register col;
register color;
(void)notify_dispatch();
color = (init_color == 0)? 0 : 1;
do {
col = *transition_vector++;
pw_vector(pw,
col, row, (*transition_vector)-1, row,
PIX_SRC, color);
color = 1 - color;
} while (--vector_size);
}
static void
repaint_proc( /* Ignore args */ )
{
/* if repainting is required, just restart */
metafont_sw->mf_flags |= MF_RESTART;
}
static void
resize_proc( /* Ignore args */ )
{
metafont_sw->mf_flags |= MF_RESTART;
}
static Notify_value
mf_notice_destroy(frame, status)
Frame frame;
Destroy_status status;
{
if (status != DESTROY_CHECKING) {
destroy_ready = TRUE;
(void)notify_stop();
}
return(notify_next_destroy_func(frame,status));
}
#else
int sunview_dummy;
#endif /* SUNTOOLSWIN */
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