type/default: optionally draw min/max spikes in a lighter color in graphs

Closes #73

3 files changed, 8 insertions, 4 deletions

diff --git a/conf/config.php b/conf/config.php
index e40cc9f..30eaaf9 100644
--- a/conf/config.php
+++ b/conf/config.php
@@ -62,6 +62,9 @@ $CONFIG['percentile'] = false;
 # create smooth graphs (rrdtool -E)
 $CONFIG['graph_smooth'] = false;
 
+# draw min/max spikes in a lighter color in graphs with type default
+$CONFIG['graph_minmax'] = false;
+
 # browser cache time for the graphs (in seconds)
 $CONFIG['cache'] = 90;
 
diff --git a/type/Base.class.php b/type/Base.class.php
index 34e182f..5af4c29 100644
--- a/type/Base.class.php
+++ b/type/Base.class.php
@@ -24,6 +24,7 @@ class Type_Base {
         var $negative_io;
         var $percentile = false;
         var $graph_smooth;
+        var $graph_minmax;
 
         var $files;
         var $tinstances;
@@ -57,6 +58,7 @@ class Type_Base {
                 $this->graph_type = $config['graph_type'];
                 $this->negative_io = $config['negative_io'];
                 $this->graph_smooth = $config['graph_smooth'];
+                $this->graph_minmax = $config['graph_minmax'];
                 $this->flush_socket = $config['socket'];
                 $this->flush_type = $config['flush_type'];
         }
diff --git a/type/Default.class.php b/type/Default.class.php
index 9f3b97a..6e7efd9 100644
--- a/type/Default.class.php
+++ b/type/Default.class.php
@@ -35,13 +35,12 @@ class Type_Default extends Type_Base {
                         }
                 }
 
-                if(count($this->files)<=1) {
+                if ($this->graph_minmax) {
                         $c = 0;
                         foreach ($sources as $source) {
                                 $color = is_array($this->colors) ? (isset($this->colors[$source])?$this->colors[$source]:$this->colors[$c++]): $this->colors;
-                                $rrdgraph[] = sprintf('AREA:max_%s#%s', crc32hex($source), $this->get_faded_color($color));
-                                $rrdgraph[] = sprintf('AREA:min_%s#%s', crc32hex($source), 'ffffff');
-                                break; # only 1 area to draw
+                                $rrdgraph[] = sprintf('LINE1:max_%s#%s', crc32hex($source), $this->get_faded_color($color));
+                                $rrdgraph[] = sprintf('LINE1:min_%s#%s', crc32hex($source), $this->get_faded_color($color));
                         }
                 }