From b13e83720c268c2624b9bd7a8e09a0355366c0cc Mon Sep 17 00:00:00 2001
From: oetiker <oetiker@a5681a0c-68f1-0310-ab6d-d61299d08faa>
Date: Mon, 25 Oct 2004 22:22:53 +0000
Subject: [PATCH] * fore-rules-legend option -- author name missing

git-svn-id: svn://svn.oetiker.ch/rrdtool/trunk/program@294 a5681a0c-68f1-0310-ab6d-d61299d08faa
---
 doc/rrdgraph.src |  4 ++++
 src/rrd_graph.c  | 22 ++++++++++++++--------
 src/rrd_graph.h  |  1 +
 3 files changed, 19 insertions(+), 8 deletions(-)

diff --git a/doc/rrdgraph.src b/doc/rrdgraph.src
index ae3f8a6..df7a836 100644
--- a/doc/rrdgraph.src
+++ b/doc/rrdgraph.src
@@ -328,6 +328,10 @@ B<[-g|--no-legend]>
 
 Suppress generation of legend; only render the graph.
 
+B<[-F|--force-rules-legend]>
+
+Force the generation of HRULE and VRULE legend even if those HRULE or VRULE will not be drawn because out of graph boundaries (mimics behaviour of pre 1.0.42 versions).
+
 B<[-b|--base E<lt>valueE<gt>]>
 
 If you are graphing memory (and NOT network traffic) this switch
diff --git a/src/rrd_graph.c b/src/rrd_graph.c
index d22c853..85984b3 100644
--- a/src/rrd_graph.c
+++ b/src/rrd_graph.c
@@ -1396,13 +1396,15 @@ leg_place(image_desc_t *im)
         
         /* hid legends for rules which are not displayed */
         
-	if (im->gdes[i].gf == GF_HRULE &&
-	    (im->gdes[i].yrule < im->minval || im->gdes[i].yrule > im->maxval))
-	    im->gdes[i].legend[0] = '\0';
-
-	if (im->gdes[i].gf == GF_VRULE &&
-	    (im->gdes[i].xrule < im->start || im->gdes[i].xrule > im->end))
-	    im->gdes[i].legend[0] = '\0';
+	if(!(im->extra_flags & FORCE_RULES_LEGEND)) {
+		if (im->gdes[i].gf == GF_HRULE &&
+		    (im->gdes[i].yrule < im->minval || im->gdes[i].yrule > im->maxval))
+		    im->gdes[i].legend[0] = '\0';
+
+		if (im->gdes[i].gf == GF_VRULE &&
+		    (im->gdes[i].xrule < im->start || im->gdes[i].xrule > im->end))
+		    im->gdes[i].legend[0] = '\0';
+	}
 
 	leg_cc = strlen(im->gdes[i].legend);
 	
@@ -2799,6 +2801,7 @@ rrd_graph_options(int argc, char *argv[],image_desc_t *im)
 	    {"lazy",       no_argument,       0,  'z'},
             {"zoom",       required_argument, 0,  'm'},
 	    {"no-legend",  no_argument,       0,  'g'},
+	    {"force-rules-legend",no_argument,0,  'F'},
             {"only-graph", no_argument,       0,  'j'},
 	    {"alt-y-grid", no_argument,       0,  'Y'},
             {"no-minor",   no_argument,       0,  'I'},
@@ -2813,7 +2816,7 @@ rrd_graph_options(int argc, char *argv[],image_desc_t *im)
 
 
 	opt = getopt_long(argc, argv, 
-                         "s:e:x:y:v:w:h:iu:l:rb:oc:n:m:t:f:a:I:zgjYAMX:S:N",
+			 "s:e:x:y:v:w:h:iu:l:rb:oc:n:m:t:f:a:I:zgjFYAMX:S:N",
 			  long_options, &option_index);
 
 	if (opt == EOF)
@@ -2838,6 +2841,9 @@ rrd_graph_options(int argc, char *argv[],image_desc_t *im)
 	case 'g':
 	    im->extra_flags |= NOLEGEND;
 	    break;
+	case 'F':
+	    im->extra_flags |= FORCE_RULES_LEGEND;
+	    break;
 	case 'X':
 	    im->unitsexponent = atoi(optarg);
 	    break;
diff --git a/src/rrd_graph.h b/src/rrd_graph.h
index 7cf2a6e..181474c 100644
--- a/src/rrd_graph.h
+++ b/src/rrd_graph.h
@@ -14,6 +14,7 @@
 #define NOLEGEND	0x08	/* use no legend */
 #define NOMINOR         0x20    /* Turn off minor gridlines */
 #define ONLY_GRAPH      0x24   /* use only graph */
+#define FORCE_RULES_LEGEND	0x40	/* force printing of HRULE and VRULE legend */
 
 
 enum tmt_en {TMT_SECOND=0,TMT_MINUTE,TMT_HOUR,TMT_DAY,
-- 
2.11.0