From aa49d9ec7aaa79cc42043224386ffc30bf7c7b0f Mon Sep 17 00:00:00 2001
From: Kore Nordmann <github@kore-nordmann.de>
Date: Thu, 24 May 2007 12:29:24 +0000
Subject: - Fixed issue #10842: Pie charts fatal error with datasets with value
 sum <= 0

---
 src/charts/pie.php | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

(limited to 'src/charts')

diff --git a/src/charts/pie.php b/src/charts/pie.php
index 782ad32..4d616c8 100644
--- a/src/charts/pie.php
+++ b/src/charts/pie.php
@@ -86,8 +86,13 @@ class ezcGraphPieChart extends ezcGraphChart
 
         // Calculate sum of all values to be able to calculate percentage
         $sum = 0;
-        foreach ( $dataset as $value )
+        foreach ( $dataset as $name => $value )
         {
+            if ( $value <= 0 )
+            {
+                throw new ezcGraphInvalidDataException( "Values > 0 required, '$name' => '$value'." );
+            }
+
             $sum += $value;
         }
         if ( $this->options->sum !== false )
@@ -95,6 +100,11 @@ class ezcGraphPieChart extends ezcGraphChart
             $sum = max( $sum, $this->options->sum );
         }
 
+        if ( $sum <= 0 )
+        {
+            throw new ezcGraphInvalidDataException( "Pie charts require a value sum > 0, your value: '$sum'." );
+        }
+
         $angle = 0;
         foreach ( $dataset as $label => $value )
         {
-- 
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