From 891c9e65de4e6f3b78ba32c318f0c361b93b181c Mon Sep 17 00:00:00 2001
From: Robert Sesek <rsesek@bluestatic.org>
Date: Sat, 11 Feb 2006 02:44:28 +0000
Subject: [PATCH] The legend is now drawn all purdy

---
 graph_pie.php | 57 +++++++++++++++++++++++++++++++++++++++++++--------
 1 file changed, 48 insertions(+), 9 deletions(-)

diff --git a/graph_pie.php b/graph_pie.php
index d8525ae..1103204 100644
--- a/graph_pie.php
+++ b/graph_pie.php
@@ -116,33 +116,68 @@ class Graph_Pie
 		$colours['black'] = imagecolorallocate($this->image, 0, 0, 0);
 		$colours['white'] = imagecolorallocate($this->image, 255, 255, 255);
 		
+		$graphpadding = 10;
+		$graphspacing = 3;
+		$diameter = $this->dimensions['height'] - (5 * $graphpadding);
+		$radius = $diameter / 2;
+		$graphstart = $graphpadding + imagefontheight(5) + $graphpadding;
+		$legendbox = 10;
+		
 		// fill background
 		imagefill($this->image, 0, 0, $colours['white']);
 		
 		// title the chart
-		imagestring($this->image, 5, ($this->dimensions['width'] - (imagefontwidth(5) * strlen($this->title))) / 2, 10, $this->title, $colours['black']);
+		imagestring($this->image, 5, ($this->dimensions['width'] - (imagefontwidth(5) * strlen($this->title))) / 2, $graphpadding, $this->title, $colours['black']);
 		
-		$center = array('x' => ($this->dimensions['width'] / 2), 'y' => ($this->dimensions['height'] / 2) + 10);
-		$radius = ($this->dimensions['height'] - 55);
+		$center = array(
+			'x' => ($this->legend ? ($radius + $graphpadding) : ($this->dimensions['width'] / 2)),
+			'y' => ($this->dimensions['height'] / 2) + $graphpadding
+		);
 		
 		// draw a border
 		imageline($this->image, 0, 0, 0, $this->dimensions['height'], $colours['black']); // left
 		imageline($this->image, 0, $this->dimensions['height'] - 1, $this->dimensions['width'], $this->dimensions['height'] - 1, $colours['black']); // bottom
 		imageline($this->image, $this->dimensions['width'] - 1, 0, $this->dimensions['width'] - 1, $this->dimensions['height'], $colours['black']); // right
 		imageline($this->image, 0, 0, $this->dimensions['width'], 0, $colours['black']); // top
-				
-		$lastdeg = 0;
 		
+		$legx = (2 * $graphpadding) + $diameter;
+		
+		$lastdeg = 0;
+		$boxoffset = 0;
 		foreach ($this->dataset AS $plot)
 		{
 			$deg = (360 / 100) * $plot[1];
-			imagefilledarc($this->image, $center['x'], $center['y'], $radius, $radius, $lastdeg, $deg + $lastdeg, $plot[2], IMG_ARC_PIE);
-			//imagefilledarc($this->image, $center['x'], $center['y'], $radius, $radius, $lastdeg, $deg + $lastdeg, $colours['black'], IMG_ARC_EDGED | IMG_ARC_NOFILL);
+			imagefilledarc($this->image, $center['x'], $center['y'], $diameter, $diameter, $lastdeg, $deg + $lastdeg, $plot[2], IMG_ARC_PIE);
+			//imagefilledarc($this->image, $center['x'], $center['y'], $diameter, $diameter, $lastdeg, $deg + $lastdeg, $colours['black'], IMG_ARC_EDGED | IMG_ARC_NOFILL);
 			$lastdeg = $deg;
+			
+			if ($this->legend)
+			{
+				$box = array(
+					$legx + 1 + $graphspacing,				$graphstart + 1 + $graphspacing + $boxoffset, // top left
+					$legx + 1 + $graphspacing,				$graphstart + 1 + $graphspacing + $boxoffset + $legendbox, // bottom left
+					$legx + 1 + $graphspacing + $legendbox,	$graphstart + 1 + $graphspacing + $boxoffset + $legendbox, // bottom right
+					$legx + 1 + $graphspacing + $legendbox,	$graphstart + 1 + $graphspacing + $boxoffset // top right
+				);
+				imagefilledpolygon($this->image, $box, 4, $plot[2]);
+				
+				imagestring($this->image, 2, ($legx + 1 + $graphspacing + $legendbox + $graphspacing), ($graphstart + 1 + $graphspacing + $boxoffset), $plot[0] . " ($plot[1]%)", $colours['black']);
+				
+				$boxoffset += $graphspacing + $legendbox;
+			}
 		}
 		
 		// draw the ellipse (do here so it cleans up the arc edges)
-		imageellipse($this->image, $center['x'], $center['y'], $radius, $radius, $colours['black']);
+		imageellipse($this->image, $center['x'], $center['y'], $diameter, $diameter, $colours['black']);
+		
+		// do the legend
+		if ($this->legend)
+		{
+			imageline($this->image, $legx, $graphstart, $this->dimensions['width'] - $graphpadding, $graphstart, $colours['black']); // top
+			imageline($this->image, $legx, $graphstart, $legx, $legy = ($graphstart + $graphspacing + $boxoffset + 1), $colours['black']); // left
+			imageline($this->image, $legx, $legy, $this->dimensions['width'] - $graphpadding, $legy, $colours['black']); // bottom
+			imageline($this->image, $this->dimensions['width'] - $graphpadding, $graphstart, $this->dimensions['width'] - $graphpadding, $legy, $colours['black']); // right
+		}
 		
 		imagepng($this->image);
 		
@@ -211,7 +246,11 @@ class Graph_Pie
 	{
 		static $colourlist = array(
 			array(255, 0, 0),
-			array(100, 0, 0)
+			array(100, 0, 0),
+			array(0, 255, 0),
+			array(0, 100, 0),
+			array(0, 0, 255),
+			array(0, 0, 100)
 		);
 		static $allocated;
 		
-- 
2.22.5