From 4414926d4c2ab02e84ffe1d55d26b27632cb18aa Mon Sep 17 00:00:00 2001
From: oetiker <oetiker@a5681a0c-68f1-0310-ab6d-d61299d08faa>
Date: Wed, 14 Feb 2007 06:53:01 +0000
Subject: [PATCH] allow --units-length to reserve label space even when
 --y-grid=none is in effect [#75], tobi

git-svn-id: svn://svn.oetiker.ch/rrdtool/branches/1.2/program@1003 a5681a0c-68f1-0310-ab6d-d61299d08faa
---
 doc/rrdgraph.pod | 4 ++++
 src/rrd_graph.c  | 4 +++-
 src/rrd_graph.h  | 6 ++++--
 3 files changed, 11 insertions(+), 3 deletions(-)

diff --git a/doc/rrdgraph.pod b/doc/rrdgraph.pod
index b7bf370..59d3ac4 100644
--- a/doc/rrdgraph.pod
+++ b/doc/rrdgraph.pod
@@ -191,6 +191,10 @@ placed every I<label factor> lines.  You can specify C<-y none> to
 suppress the grid and labels altogether.  The default for this option is
 to automatically select sensible values.
 
+If you have set --y-grid to 'none' not only the labels get supressed, also
+the space reserved for the labels is removed. You can still add space
+manually if you use the --units-length command to explicitly reserve space.
+
 [B<-Y>|B<--alt-y-grid>]
 
 Place the Y grid dynamically based on the graph's Y range. The algorithm
diff --git a/src/rrd_graph.c b/src/rrd_graph.c
index 9be24e8..5a54c3d 100644
--- a/src/rrd_graph.c
+++ b/src/rrd_graph.c
@@ -2424,7 +2424,7 @@ graph_size_location(image_desc_t *im, int elements
 	if (im->draw_x_grid) {
 	    Yxlabel=im->text_prop[TEXT_PROP_AXIS].size *2.5;
 	}
-	if (im->draw_y_grid) {
+	if (im->draw_y_grid || im->forceleftspace ) {
 	    Xylabel=gfx_get_text_width(im->canvas, 0,
 	                im->text_prop[TEXT_PROP_AXIS].font,
         	        im->text_prop[TEXT_PROP_AXIS].size,
@@ -3115,6 +3115,7 @@ rrd_graph_init(image_desc_t *im)
     im->maxval = DNAN;    
     im->unitsexponent= 9999;
     im->unitslength= 6; 
+    im->forceleftspace = 0;
     im->symbol = ' ';
     im->viewfactor = 1.0;
     im->extra_flags= 0;
@@ -3284,6 +3285,7 @@ rrd_graph_options(int argc, char *argv[],image_desc_t *im)
 	    break;
 	case 'L':
 	    im->unitslength = atoi(optarg);
+            im->forceleftspace = 1;
 	    break;
 	case 'T':
 	    im->tabwidth = atof(optarg);
diff --git a/src/rrd_graph.h b/src/rrd_graph.h
index 6ed66d2..2e8e3bc 100644
--- a/src/rrd_graph.h
+++ b/src/rrd_graph.h
@@ -191,11 +191,13 @@ typedef struct image_desc_t {
 #endif
     long           ximg,yimg;      /* total size of the image */
     double         magfact;        /* numerical magnitude*/
-    long         base;            /* 1000 or 1024 depending on what we graph */
+    long         base;             /* 1000 or 1024 depending on what we graph */
     char           symbol;         /* magnitude symbol for y-axis */
     float          viewfactor;     /* how should the numbers on the y-axis be scaled for viewing ? */
-    int            unitsexponent;    /* 10*exponent for units on y-asis */
+    int            unitsexponent;  /* 10*exponent for units on y-asis */
     int            unitslength;    /* width of the yaxis labels */
+    int            forceleftspace; /* do not kill the space to the left of the y-axis if there is no grid */
+
     int            extra_flags;    /* flags for boolean options */
     /* data elements */
 
-- 
2.30.2