From ba9b0d993fd55de17c38c419ee4dd5252d54bb8e Mon Sep 17 00:00:00 2001
From: tth <sigfood@dinorama.fr>
Date: Thu, 10 Jan 2019 14:07:56 +0100
Subject: [PATCH] first version of ncurses waterfall

---
 viz/curses/Makefile    | 10 ++++---
 viz/curses/ecran.c     | 17 +++++------
 viz/curses/ecran.h     |  4 ++-
 viz/curses/t.c         | 34 ++++++++++++++++------
 viz/curses/waterfall.c | 66 +++++++++++++++++++++++++++++++++++-------
 5 files changed, 98 insertions(+), 33 deletions(-)

diff --git a/viz/curses/Makefile b/viz/curses/Makefile
index 63d91f6..a275f58 100644
--- a/viz/curses/Makefile
+++ b/viz/curses/Makefile
@@ -1,21 +1,23 @@
+# ---------------				***
 
+COPT = -Wall -g -DTRACE=0 
 
 # ---------------				***
 
 ecran.o:	ecran.c Makefile ecran.h
-	gcc -Wall -c $< 
+	gcc $(COPT) -c $< 
 
 7segments.o:	7segments.c Makefile
-	gcc -Wall -c $< 
+	gcc $(COPT) -c $< 
 
 waterfall.o:	waterfall.c Makefile
-	gcc -Wall -c $< 
+	gcc $(COPT) -c $< 
 
 # ---------------				***
 
 OBJ = ecran.o waterfall.o 7segments.o
 
 t:	t.c Makefile $(OBJ) ecran.h
-	gcc -Wall $< $(OBJ) -lncurses -o $@
+	gcc $(COPT) $< $(OBJ) -lncurses -o $@
 
 # ---------------				***
diff --git a/viz/curses/ecran.c b/viz/curses/ecran.c
index 46a8ec5..37dd65b 100644
--- a/viz/curses/ecran.c
+++ b/viz/curses/ecran.c
@@ -1,6 +1,6 @@
 #include  <stdio.h>
 #include  <stdlib.h>
-#include  <strings.h>
+#include  <string.h>
 #include  <getopt.h>
 #include  <ncurses.h>
 
@@ -21,16 +21,21 @@ standend();
 /* refresh(); */
 }
 /* ---------------------------------------------------------------- */
-int fond_ecran(void)
+int fond_ecran(char *title)
 {
+char		*tp;
+
 #if TRACE
 int     foo;
 char    buffer[200];
 #endif
 
+tp = " DD2 MONITORING by tTh 2019 ";
+if (NULL != title)	tp = title;
+
 barre_inverse('+', 0);
 standout();
-mvaddstr(0, 2, " DD2 MONITORING by tTh 2019 ");
+mvaddstr(0, 2, tp);
 #if TRACE
 sprintf(buffer, " ecran %dx%d ", COLS, LINES);
 foo = strlen(buffer);
@@ -39,12 +44,6 @@ mvaddstr(0, COLS-2-foo, buffer);
 standend();
 refresh();
 
-#if TRACE
-fprintf(stderr, "HAUT   %3d\n", HAUT);
-fprintf(stderr, "HAUT_1 %3d  BARRE_1 %3d\n", HAUT_1, BARRE_1);
-fprintf(stderr, "HAUT_2 %3d  BARRE_2 %3d\n", HAUT_2, BARRE_2);
-#endif
-
 return 0;
 }
 /* ---------------------------------------------------------------- */
diff --git a/viz/curses/ecran.h b/viz/curses/ecran.h
index 8fbd681..5f0d60d 100644
--- a/viz/curses/ecran.h
+++ b/viz/curses/ecran.h
@@ -1,6 +1,8 @@
 
 
-int fond_ecran(void);
+int fond_ecran(char *titre);
 
 
 WINDOW * open_waterfall(char *title, int flags);
+int plot_waterfall(WINDOW *wf, int flags, float values[4]);
+int close_waterfall(WINDOW *wf, int notused);
diff --git a/viz/curses/t.c b/viz/curses/t.c
index 1ce4041..3207949 100644
--- a/viz/curses/t.c
+++ b/viz/curses/t.c
@@ -12,20 +12,36 @@ int	verbosity;
 /* ---------------------------------------------------------------- */
 void demo(int nbl, int k)
 {
-int	loop;
-char	line[100];
-WINDOW	*water;
+int		loop, foo;
+char		line[100];
+WINDOW		*water;
+static float	rvals[4];
+
 
 water = open_waterfall("premier essai", 0);
 
 for (loop=0; loop<nbl; loop++) {
 
-	sprintf(line, "%04X %04X", loop, rand()&0xffff);
-	mvaddstr(5, 5, line);
+	sprintf(line, "%04X  %04X", loop, rand()&0xffff);
+	mvwaddstr(stdscr, LINES-1, 1, line);
+	wrefresh(stdscr);
 
-	sleep(1);
-	refresh();
+	for (foo=0; foo<4; foo++) {
+		if (rand()%100<42) {
+			rvals[foo] += 3.8*(foo + 1);
+			}
+		if (rvals[foo] > 1023.0) {
+			rvals[foo] = (float)(rand() % 15);
+		}
 	}
+
+	plot_waterfall(water, 1, rvals);
+
+	if (rand()%10 < 1)	sleep(1);
+	}
+
+close_waterfall(water, 0);
+
 }
 /* ---------------------------------------------------------------- */
 static void finish(int signal)
@@ -59,9 +75,9 @@ nonl();         cbreak();       noecho();
 
 keypad(stdscr, TRUE);           /* acces aux touches 'curseur' */
 
-fond_ecran();
+fond_ecran(" Demonstrator ");
 
-demo(1024, 0);
+demo(9000, 0);
 
 /*
  *      plop, on a fini, restaurer la console
diff --git a/viz/curses/waterfall.c b/viz/curses/waterfall.c
index 2c16dce..b5c7a57 100644
--- a/viz/curses/waterfall.c
+++ b/viz/curses/waterfall.c
@@ -22,26 +22,72 @@ WINDOW *open_waterfall(char *title, int flags)
 WINDOW		*win;
 int		l, c, w, h;
 
-l = 2;			c = 1;
-w = COLS - 2;		h = LINES -3;
+l = 1;			c = 1;
+w = COLS - 2;		h = LINES - 3;
 
 win = newwin(h, w, l, c);
+scrollok(win, 1);
+waddstr(win, title);	waddch(win, '\n');
+wrefresh(win);
 
 return win;
 }
 /* ---------------------------------------------------------------- */
-int plot_waterfall(WINDOW *wf, float values[4])
+int plot_waterfall(WINDOW *wf, int mode, float values[4])
 {
 #define TL 1000
-int	foo;
-char	tag, ligne[TL+1];
+int		foo, idx;
+char		tag, ligne[TL+1];
+float		coef_w;
+static long	iter;
 
-for(foo=0; foo<TL; foo++)	*(ligne+foo) = '-';
-
-for(foo=0; foo<4; foo++) {
-	tag = "ATOX"[foo];
-	
+if (0 == (iter%10)) {
+	memset(ligne, '-', TL);
 	}
+else	{
+	memset(ligne, ' ', TL);
+	}
+for (foo=0; foo<500; foo+=10) {
+	ligne[foo] = '|';
+	}
+ligne[COLS-4] = '\0';
+
+iter++;
+
+coef_w = (float)(COLS-2) / 1024.0;
+
+#if TRACE
+sprintf(ligne, "coef_w = %f\n", coef_w);
+waddstr(wf, ligne);	waddch(wf, '\n');
+#endif
+
+switch (mode) {
+
+	case 0:	default:
+		sprintf(ligne, "%11.3f  %11.3f  %11.3f  %11.3f",
+			values[0], values[1], values[2], values[3]);
+#if TRACE
+		fprintf(stderr, "%s [%s]\n", __func__, ligne);
+#endif
+		break;
+
+	case 1:
+		for(foo=0; foo<4; foo++) {
+			tag = "ATOX"[foo];
+			idx = (int)(values[foo]*coef_w);
+			ligne[idx] = tag;
+			}
+		ligne[COLS-4] = '\0';
+		break;
+
+	}
+
+
+
+/* poke the text in the curses window */
+// scroll(wf);
+waddstr(wf, ligne);	waddch(wf, '\n');
+wrefresh(wf);
 
 return -1;
 }