From ac2c7e05d104d1dc39ccf5391b13103dab7d251f Mon Sep 17 00:00:00 2001
From: Timothy Pearson <tpearson@raptorengineeringinc.com>
Date: Sat, 12 Dec 2015 20:31:50 -0600
Subject: Add option to only render specific datasets with fill color as
 opposed to all datasets

---
 src/charts/line.php   |  7 ++++++-
 src/charts/radar.php  |  7 ++++++-
 src/datasets/base.php | 19 +++++++++++++++++++
 3 files changed, 31 insertions(+), 2 deletions(-)

diff --git a/src/charts/line.php b/src/charts/line.php
index 2225de6..0bfa7f7 100644
--- a/src/charts/line.php
+++ b/src/charts/line.php
@@ -276,7 +276,12 @@ class ezcGraphLineChart extends ezcGraphChart
             $yAxis = ( $data->yAxis->default ? $data->yAxis->default: $this->elements['yAxis'] );
 
             // Determine fill color for dataset
-            if ( $this->options->fillLines !== false )
+            if ( $data->fillLine !== false )
+            {
+                $fillColor = clone $data->color->default;
+                $fillColor->alpha = (int) round( ( 255 - $fillColor->alpha ) * ( $data->fillLine / 255 ) );
+            }
+            else if ( $this->options->fillLines !== false )
             {
                 $fillColor = clone $data->color->default;
                 $fillColor->alpha = (int) round( ( 255 - $fillColor->alpha ) * ( $this->options->fillLines / 255 ) );
diff --git a/src/charts/radar.php b/src/charts/radar.php
index 23bcc3a..b7bd820 100644
--- a/src/charts/radar.php
+++ b/src/charts/radar.php
@@ -300,7 +300,12 @@ class ezcGraphRadarChart extends ezcGraphChart
         {
             --$nr;
             // Determine fill color for dataset
-            if ( $this->options->fillLines !== false )
+            if ( $data->fillLine !== false )
+            {
+                $fillColor = clone $data->color->default;
+                $fillColor->alpha = (int) round( ( 255 - $fillColor->alpha ) * ( $data->fillLine / 255 ) );
+            }
+            else if ( $this->options->fillLines !== false )
             {
                 $fillColor = clone $data->color->default;
                 $fillColor->alpha = (int) round( ( 255 - $fillColor->alpha ) * ( $this->options->fillLines / 255 ) );
diff --git a/src/datasets/base.php b/src/datasets/base.php
index 5271ead..219b3f9 100644
--- a/src/datasets/base.php
+++ b/src/datasets/base.php
@@ -37,6 +37,9 @@
  *           Displayed string if a data point is highlighted
  * @property bool $highlight
  *           Status if datapoint element is hilighted
+ * @property mixed $fillLine
+ *           Interpretation depends on underlying chart type
+ *           @see chart type fillLines option for details
  * @property int $displayType
  *           Display type of chart data
  * @property string $url
@@ -110,6 +113,7 @@ abstract class ezcGraphDataSet implements ArrayAccess, Iterator, Countable
         $this->properties['yAxis'] = new ezcGraphDataSetAxisProperty( $this );
 
         $this->properties['highlight']->default = false;
+        $this->properties['fillLine'] = false;
     }
 
     /**
@@ -149,6 +153,21 @@ abstract class ezcGraphDataSet implements ArrayAccess, Iterator, Countable
                 $this->symbol->default = $this->palette->dataSetSymbol;
                 break;
 
+            case 'fillLine':
+                if ( ( $propertyValue !== false ) &&
+                     !is_numeric( $propertyValue ) ||
+                     ( $propertyValue < 0 ) ||
+                     ( $propertyValue > 255 ) )
+                {
+                    throw new ezcBaseValueException( $propertyName, $propertyValue, 'false OR 0 <= int <= 255' );
+                }
+
+                $this->properties[$propertyName] = (
+                    $propertyValue === false
+                    ? false
+                    : (int) $propertyValue );
+                break;
+
             default:
                 throw new ezcBasePropertyNotFoundException( $propertyName );
                 break;
-- 
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