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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 ant 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 SUNWIN
-
- /* <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;
-
- /*
- * init_screen: boolean; return true if window operations legal
- */
-
- int
- mf_sun_initscreen()
- {
- 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)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(left, right, top, bottom)
- screencol left, right;
- screenrow top, 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(row, init_color, transition_vector, vector_size)
- 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 /* SUNWIN */
-