add 'u' to backup one line for special legend placement tricks

git-svn-id: svn://svn.oetiker.ch/rrdtool/trunk/program@2012 a5681a0c-68f1-0310-ab6d-d61299d08faa

diff --git a/doc/rrdgraph_graph.pod b/doc/rrdgraph_graph.pod
index 44efce7..c740aad 100644 (file)
--- a/doc/rrdgraph_graph.pod
+++ b/doc/rrdgraph_graph.pod
@@ -365,8 +365,15 @@ in connection with B<%s> to suppress empty unit strings.
 A special case is COMMENT:B<\s> which inserts some additional vertical space
 before placing the next row of legends.
 
-If you are using the proportional font in your graph, you can use tab
-characters or the sequence B<\t> to line-up legend elements. Note that
+If you want to have left and right aligned legends on the same line use COMMENT:B<\u>
+to go one line back like this:
+
+ COMMENT:left\l
+ COMMENT:\u
+ COMMENT:right\r
+
+When using a proportional font in your graph, the tab
+characters or the sequence B<\t> will line-up legend elements. Note that
 the tabs inserted are relative to the start of the current legend
 element!
 

diff --git a/src/rrd_graph.c b/src/rrd_graph.c
index 24b58d0..a93fbb1 100644 (file)
--- a/src/rrd_graph.c
+++ b/src/rrd_graph.c
@@ -1730,6 +1730,7 @@ int leg_place(
                 prt_fctn != 'r' &&
                 prt_fctn != 'j' &&
                 prt_fctn != 'c' &&
+                prt_fctn != 'u' &&
                 prt_fctn != 's' && prt_fctn != '\0' && prt_fctn != 'g') {
                 free(legspace);
                 rrd_set_error
@@ -1839,6 +1840,8 @@ int leg_place(
                     leg_y += im->text_prop[TEXT_PROP_LEGEND].size * 1.8;
                 if (prt_fctn == 's')
                     leg_y -= im->text_prop[TEXT_PROP_LEGEND].size;
+                if (prt_fctn == 'u')
+                    leg_y -= im->text_prop[TEXT_PROP_LEGEND].size *1.8;
 
                 if(calc_width && (fill > legendwidth)){
                     legendwidth = fill;