X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=profile.c;h=56716f5f767c11646d0edaade51d2b9b4d1b427f;hb=bf7d70fe8b9b8c2a1f6d381ae000cb0d91e36961;hp=78643cd753d1c393760c593e6d7957377ddbabbf;hpb=2b4fa480ae57766889c5a20ff1cb59427469d401;p=ext%2Fsubsurface.git

diff --git a/profile.c b/profile.c
index 78643cd..56716f5 100644
--- a/profile.c
+++ b/profile.c
@@ -166,11 +166,62 @@ static void plot_text(struct graphics_context *gc, const text_render_options_t *
 	cairo_show_text(cr, buffer);
 }
 
+struct ev_select {
+	char *ev_name;
+	gboolean plot_ev;
+};
+static struct ev_select *ev_namelist;
+static int evn_allocated;
+static int evn_used;
+
+void evn_foreach(void (*callback)(const char *, int *, void *), void *data)
+{
+	int i;
+
+	for (i = 0; i < evn_used; i++) {
+		callback(ev_namelist[i].ev_name, &ev_namelist[i].plot_ev, data);
+	}
+}
+
+void remember_event(const char *eventname)
+{
+	int i=0, len;
+
+	if (!eventname || (len = strlen(eventname)) == 0)
+		return;
+	while (i < evn_used) {
+		if (!strncmp(eventname,ev_namelist[i].ev_name,len))
+			return;
+		i++;
+	}
+	if (evn_used == evn_allocated) {
+		evn_allocated += 10;
+		ev_namelist = realloc(ev_namelist, evn_allocated * sizeof(struct ev_select));
+		if (! ev_namelist)
+			/* we are screwed, but let's just bail out */
+			return;
+	}
+	ev_namelist[evn_used].ev_name = strdup(eventname);
+	ev_namelist[evn_used].plot_ev = TRUE;
+	evn_used++;
+}
+
 static void plot_one_event(struct graphics_context *gc, struct plot_info *pi, struct event *event, const text_render_options_t *tro)
 {
 	int i, depth = 0;
 	int x,y;
 
+	/* is plotting this event disabled? */
+	if (event->name) {
+		for (i = 0; i < evn_used; i++) {
+			if (! strcmp(event->name, ev_namelist[i].ev_name)) {
+				if (ev_namelist[i].plot_ev)
+					break;
+				else
+					return;
+			}
+		}
+	}
 	for (i = 0; i < pi->nr; i++) {
 		struct plot_data *data = pi->entry + i;
 		if (event->time.seconds < data->sec)
@@ -299,23 +350,43 @@ static void plot_minmax_profile(struct graphics_context *gc, struct plot_info *p
 
 static void plot_depth_profile(struct graphics_context *gc, struct plot_info *pi)
 {
-	int i;
+	int i, incr;
 	cairo_t *cr = gc->cr;
 	int sec, depth;
 	struct plot_data *entry;
 	int maxtime, maxdepth, marker;
+	int increments[4] = { 5*60, 10*60, 15*60, 30*60 };
 
 	/* Get plot scaling limits */
 	maxtime = get_maxtime(pi);
 	maxdepth = get_maxdepth(pi);
 
-	/* Time markers: every 5 min */
+	/* Time markers: at most every 5 min, but no more than 12 markers
+	 * and for convenience we do 5, 10, 15 or 30 min intervals.
+	 * This allows for 6h dives - enough (I hope) for even the craziest
+	 * divers - but just in case, for those 8h depth-record-breaking dives,
+	 * we double the interval if this still doesn't get us to 12 or fewer
+	 * time markers */
+	i = 0;
+	while (maxtime / increments[i] > 12 && i < 4)
+		i++;
+	incr = increments[i];
+	while (maxtime / incr > 12)
+		incr *= 2;
+
 	gc->leftx = 0; gc->rightx = maxtime;
 	gc->topy = 0; gc->bottomy = 1.0;
-	for (i = 5*60; i < maxtime; i += 5*60) {
+	set_source_rgba(gc, 1, 1, 1, 0.5);
+	for (i = incr; i < maxtime; i += incr) {
 		move_to(gc, i, 0);
 		line_to(gc, i, 1);
 	}
+	cairo_stroke(cr);
+
+	/* now the text on every second time marker */
+	text_render_options_t tro = {10, 0.2, 1.0, 0.2, CENTER, TOP};
+	for (i = incr; i < maxtime; i += 2 * incr)
+		plot_text(gc, &tro, i, 1, "%d", i/60);
 
 	/* Depth markers: every 30 ft or 10 m*/
 	gc->leftx = 0; gc->rightx = 1.0;