codice:
<?php
// eq_pie written by ellardus (C) 2005
// for more info look at www.eq-home.com
// or email at ellardus@eq-home.com
// Feel free to use it, a reference to me would be nice.
// Thank you and good luck!
class eq_pie {
function eq_pie() {
}
function GetColor($number) {
$color = array('#ff0000', '#00ff00', '#0000ff', '#ffff00', '#ff00ff', '#00ffff', '#cc0000', '#00cc00', '#0000cc','#990000', '#009900', '#000099','#660000', '#006600', '#000066','#330000', '#003300', '#000033');
return $color[$number];
}
function MakePie($filename, $pieWidth, $pieHeight, $ShadowDistance, $pieBackgroundColor, $EQpieData, $legend){
if(!function_exists("imagecreatetruecolor")){
die("Error, GD Library 2 needed.");
}
//set some limitations
if($pieWidth < 100 |$pieWidth > 500) $pieWidth = 100;
if($pieHeight < 100 |$pieHeight > 500) $pieHeight = 100;
if($ShadowDistance < 1|$ShadowDistance > 50) $ShadowDistance = 10;
$pieWidth = $pieWidth *3;
$pieHeight = $pieHeight *3;
$ShadowDistance = $ShadowDistance*3;
$pieBackgroundColor = $pieBackgroundColor;
$pie = @ImageCreateTrueColor($pieWidth, $pieHeight+$ShadowDistance);
$colR = hexdec(substr($pieBackgroundColor,1,2));
$colG = hexdec(substr($pieBackgroundColor,3,2));
$colB = hexdec(substr($pieBackgroundColor,5,2));
$pieBG = ImageColorAllocate($pie, $colR, $colG, $colB);
ImageFill($pie, 0, 0, $pieBG);
// get the total value for percentage calculations
$this->total=0;
$maxStringLenght = 0;
foreach($EQpieData as $i => $value){
$this->total += $value[1];
if(strlen($value[0]) > $maxStringLenght) $maxStringLenght = strlen($value[0]);
}
$pieParts = $i+1;
reset($EQpieData);
$legendWidth = (($legend > 0) ? ImageFontWidth(2) * ($maxStringLenght + 6) + 40: 0 );
// the first pie-part starts with offset in degrees up from horizantal right, looks better this way
$pieStart = 135;
foreach($EQpieData as $i => $value){
// the name for each part is $value[0]
// the value for each part is $value[1]
// the color for each part is $value[2]
$piePart = $value[1];
$piePart100 = round(($piePart/$this->total*100),2); // value in percentage, the rounding and * 100 for extra accuracy for pie w/o gaps
$piePart360 = $piePart100 * 3.6 ; // in degrees
$colR = hexdec(substr($value[2],1,2));
$colG = hexdec(substr($value[2],3,2));
$colB = hexdec(substr($value[2],5,2));
$PartColor = ImageColorAllocate($pie, $colR, $colG, $colB);
$ShadowColR = (($colR > 79) ? $colR-80 : 0 );
$ShadowColG = (($colG > 79) ? $colG-80 : 0 );
$ShadowColB = (($colB > 79) ? $colB-80 : 0 );
$ShadowColor = ImageColorAllocate($pie, $ShadowColR, $ShadowColG, $ShadowColB);
//Here we create the shadow down-worths
for($i=0; $i<$ShadowDistance; $i++){
ImageFilledArc($pie, $pieWidth/2, ($pieHeight/2+$i), $pieWidth-20, $pieHeight-20, round($pieStart), round($pieStart+$piePart360), $ShadowColor, IMG_ARC_NOFILL);
}
$pieStart = $pieStart + $piePart360;
}
reset($EQpieData);
$pieStart=135;
foreach($EQpieData as $i => $value){
$piePart = $value[1];
$piePart100 = round(($piePart/$this->total*100),2); // value in percentage, the rounding and * 100 for extra accuracy for pie w/o gaps
$piePart360 = $piePart100 * 3.6 ; // in degrees
$colR = hexdec(substr($value[2],1,2));
$colG = hexdec(substr($value[2],3,2));
$colB = hexdec(substr($value[2],5,2));
$PartColor = ImageColorAllocate($pie, $colR, $colG, $colB);
//Here we create the real pie chart
ImageFilledArc($pie, $pieWidth/2, $pieHeight/2, $pieWidth-20, $pieHeight-20, round($pieStart), round($pieStart+$piePart360), $PartColor, IMG_ARC_PIE);
$pieStart = $pieStart + $piePart360;
}
reset($EQpieData);
// create final pie picture with proper background color
$finalPie = ImageCreateTrueColor($pieWidth/3+$legendWidth,($pieHeight+$ShadowDistance)/3);
ImageFill($finalPie, 0, 0, $pieBG);
// resample with pieGraph inside (3x smaller)
ImageCopyResampled($finalPie, $pie, 0, 0, 0, 0, $pieWidth/3,($pieHeight+$ShadowDistance)/3,$pieWidth,($pieHeight+$ShadowDistance));
// Create the ledgend ...
if($legendWidth > 0) {
// Legend Box
$leg_width = $legendWidth-10;
$leg_height = $pieParts*(ImageFontHeight(2)+2)+2;
$legendImage = ImageCreateTrueColor($leg_width, $leg_height);
//ImageFill($legendImage, 0, 0, $pieBG);
$borderColor = ImageColorAllocate($pie, '155', '155', '155');
$boxColor = ImageColorAllocate($pie, '255', '255', '255');
$textColor = ImageColorAllocate($pie, '55', '55', '55');
ImageFilledRectangle($legendImage, 0, 0, $leg_width, $leg_height, $boxColor);
ImageRectangle($legendImage, 0, 0, $leg_width-1, $leg_height-1, $borderColor);
$box_width = ImageFontHeight(2)-5;
$box_height = ImageFontHeight(2)-5;
$yOffset = 2;
foreach($EQpieData as $i => $value){
$piePart = $value[1];
$piePart100 = round(($piePart/$this->total*100),2); // value in percentage, the rounding and * 100 for extra accuracy for pie w/o gaps
$colR = hexdec(substr($value[2],1,2));
$colG = hexdec(substr($value[2],3,2));
$colB = hexdec(substr($value[2],5,2));
$PartColor = ImageColorAllocate($legendImage, $colR, $colG, $colB);
ImageFilledRectangle($legendImage,'5',$yOffset+2, '5'+$box_width, $yOffset+$box_height+2, $PartColor);
ImageRectangle($legendImage,'5',$yOffset+2, '5'+$box_width, $yOffset+$box_height+2, $borderColor);
$text=$value[0]." ".$piePart100."%";
ImageString($legendImage, 2, '20', $yOffset, $text, $textColor);
$yOffset=$yOffset + 15;
}
reset($EQpieData); // reset pointer in array to first
ImageCopyResampled($finalPie, $legendImage, $pieWidth/3, 10, 0, 0, $leg_width,$leg_height,$leg_width,$leg_height);
ImageDestroy($legendImage);
}
header('Content-type: image/png');
imagepng($finalPie, $filename);
ImageDestroy($pie);
ImageDestroy($finalPie);
return;
}
}
?>
Dove devo inserire ob_start per non causare l'errore degli header already sent?
Rispondi quotando
