/usr/share/jpgraph/jpgraph_pie.php is in libphp-jpgraph 1.5.2-13.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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/*=======================================================================
// File: JPGRAPH_PIE.PHP
// Description: Pie plot extension for JpGraph
// Created: 2001-02-14
// Author: Johan Persson (johanp@aditus.nu)
// Ver: $Id: jpgraph_pie.php,v 1.18 2002/03/01 00:28:56 aditus Exp $
//
// License: This code is released under GPL 2.0
// Copyright (C) 2001 Johan Persson
//========================================================================
*/
//===================================================
// CLASS PiePlot
// Description:
//===================================================
class PiePlot {
var $posx=0.5,$posy=0.5;
var $radius=0.3;
var $explode_radius=array(),$explode_all=false,$explode_r=20;
var $labels, $legends=null;
var $csimtargets=null; // Array of targets for CSIM
var $csimareas=''; // Generated CSIM text
var $csimalts=null; // ALT tags for corresponding target
var $data=null;
var $title;
var $startangle=0;
var $weight=1, $color="black";
var $font_family=FF_FONT1,$font_style=FS_NORMAL,$font_size=12,$font_color="black";
var $legend_margin=6,$show_labels=true;
var $precision=1,$show_psign=true;
var $themearr=array(
"earth" => array(10,34,40,45,46,62,63,134,74,77,120,136,141,168,180,209,218,346,395,89,430),
"pastel" => array(27,38,42,58,66,79,105,110,128,147,152,230,236,240,331,337,405,415),
"water" => array(8,370,10,40,335,56,213,237,268,14,326,387,24,388),
"sand" => array(27,168,34,170,19,50,65,72,131,209,46,393));
var $theme="earth";
var $setslicecolors=array();
var $labelformat="%01.0f"; // Default format for labels
var $labeltype=0; // Default to percentage
var $pie_border=true,$pie_interior_border=true;
//---------------
// CONSTRUCTOR
function PiePlot(&$data) {
$this->data = $data;
$this->title = new Text("");
$this->title->SetFont(FF_FONT1,FS_BOLD);
}
//---------------
// PUBLIC METHODS
function SetCenter($x,$y=0.5) {
$this->posx = $x;
$this->posy = $y;
}
function SetCSIMTargets(&$targets,$alts=null) {
$this->csimtargets=$targets;
$this->csimalts=$alts;
}
function GetCSIMareas() {
return $this->csimareas;
}
function AddSliceToCSIM($i,$xc,$yc,$radius,$sa,$ea) { //Slice number, ellipse centre (x,y), height, width, start angle, end angle
//add coordinates of the centre to the map
$coords = "$xc, $yc";
//add coordinates of the first point on the arc to the map
$xp = floor(($radius*cos($sa))+$xc);
$yp = floor($yc-$radius*sin($sa));
$coords.= ", $xp, $yp";
//add coordinates every 0.2 radians
$a=$sa+0.2;
while ($a<$ea) {
$xp = floor($radius*cos($a)+$xc);
$yp = floor($yc-$radius*sin($a));
$coords.= ", $xp, $yp";
$a += 0.2;
}
//Add the last point on the arc
$xp = floor($radius*cos($ea)+$xc);
$yp = floor($yc-$radius*sin($ea));
$coords.= ", $xp, $yp";
if( !empty($this->csimtargets[$i]) )
$this->csimareas .= "<area shape=\"poly\" coords=\"$coords\" href=\"".$this->csimtargets[$i]."\"";
if( !empty($this->csimalts[$i]) ) {
$tmp=sprintf($this->csimalts[$i],$this->data[$i]);
$this->csimareas .= " alt=\"$tmp\"";
}
$this->csimareas .= ">\r\n";
}
function SetTheme($t) {
if( in_array($t,array_keys($this->themearr)) )
$this->theme = $t;
else
JpGraphError::Raise("JpGraph Error: Unknown theme: $t");
}
function ExplodeSlice($e) {
$this->explode_radius[$e]=20;
}
function ExplodeAll($radius=-1) {
$this->explode_all=true;
if( $radius==-1 )
$this->explode_r = 20;
else
$this->explode_r = $radius;
}
function Explode($radarr) {
$this->explode_radius = $radarr;
}
function SetSliceColors($c) {
$this->setslicecolors = $c;
}
function SetStartAngle($a) {
assert($a>=0 && $a<2*M_PI);
$this->startangle = $a;
}
function SetFont($family,$style=FS_NORMAL,$size=10) {
$this->font_family=$family;
$this->font_style=$style;
$this->font_size=$size;
}
// Size in percentage
function SetSize($size) {
if( ($size>0 && $size<=0.5) || ($size>10 && $size<1000) )
$this->radius = $size;
else
JpGraphError::Raise("JpGraph Error: Size (radius) for pie must either be specified as a fraction
[0, 0.5] of the size of the image or as an absolute size in pixels
in the range [10, 1000]");
}
function SetFontColor($color) {
$this->font_color = $color;
}
// Set label arrays
function SetLegends($l) {
$this->legends = $l;
}
// Should the values be displayed?
function HideLabels($f=true) {
$this->show_labels = !$f;
}
// Specify label format as a "C" printf string
function SetLabelFormat($f) {
$this->labelformat=$f;
// If format is specified don't add any %-sign
$this->show_psign=0;
}
// Should we display actual value or percentage?
function SetLabelType($t) {
if( $t<0 || $t>1 )
JpGraphError::Raise("JpGraph Error: Label type for pie plots must be 0 or 1 (not $t).");
$this->labeltype=$t;
// Don't show percentage value when displaying absolute values
if( $t==1 )
$this->show_psign=0;
}
// Should the circle around a pie plot be displayed
function ShowBorder($exterior=true,$interior=true) {
$this->pie_border = $exterior;
$this->pie_interior_border = $interior;
}
// Setup the legends
function Legend(&$graph) {
$colors = array_keys($graph->img->rgb->rgb_table);
sort($colors);
$ta=$this->themearr[$this->theme];
if( $this->setslicecolors==null )
$numcolors=count($ta);
else
$numcolors=count($this->setslicecolors);
$sum=0;
for($i=0; $i<count($this->data); ++$i)
$sum += $this->data[$i];
$i=0;
if( count($this->legends)>0 ) {
foreach( $this->legends as $l ) {
// Replace possible format with actual values
if( $this->labeltype==0 )
$l = sprintf($l,100*$this->data[$i]/$sum);
else
$l = sprintf($l,$this->data[$i]);
if( $this->setslicecolors==null )
$graph->legend->Add($l,$colors[$ta[$i%$numcolors]]);
else
$graph->legend->Add($l,$this->setslicecolors[$i%$numcolors]);
++$i;
// Breakout if there are more legends then values
if( $i==count($this->data) ) return;
}
}
}
// Specify precision for labels. This is almost a deprecated function
// nowadays since the introduction of SetLabelFormat()
function SetPrecision($p,$psign=true) {
if( $p<0 || $p>8 )
JpGraphError::Raise("JpGraph Error: Pie label Precision must be between 0 and 8");
$this->labelformat="%01.".$p."f";
$this->show_psign=$psign;
}
function Stroke(&$img) {
$colors = array_keys($img->rgb->rgb_table);
sort($colors);
$ta=$this->themearr[$this->theme];
if( $this->setslicecolors==null )
$numcolors=count($ta);
else
$numcolors=count($this->setslicecolors);
// Draw the slices
$sum=0;
for($i=0; $i<count($this->data); ++$i)
$sum += $this->data[$i];
// Format the titles for each slice
for( $i=0; $i<count($this->data); ++$i) {
if( $this->labeltype==0 )
if( $sum != 0 )
$l = round(100*$this->data[$i]/$sum,$this->precision);
else
$l = 0;
else
$l = $this->data[$i];
$l = sprintf($this->labelformat,$l);
if( $this->show_psign ) $l .= "%";
$this->labels[$i]=$l;
}
// Set up the pic-circle
if( $this->radius < 1 )
$radius = floor($this->radius*min($img->width,$img->height));
else
$radius = $this->radius;
$xc = $this->posx*$img->width;
$yc = $this->posy*$img->height;
$accsum=0;
$angle2 = $this->startangle;
$img->SetColor($this->color);
if( $this->explode_all )
for($i=0;$i<count($this->data);++$i)
$this->explode_radius[$i]=$this->explode_r;
for($i=0; $sum>0 && $i<count($this->data); ++$i) {
$d = $this->data[$i];
$angle1 = $angle2;
$accsum += $d;
$angle2 = $this->startangle+2.0*M_PI*$accsum/$sum;
if( $this->setslicecolors==null )
$slicecolor=$colors[$ta[$i%$numcolors]];
else
$slicecolor=$this->setslicecolors[$i%$numcolors];
if( $this->pie_interior_border )
$img->SetColor($this->color);
else
$img->SetColor($slicecolor);
$arccolor = $this->pie_border ? $this->color : $slicecolor;
$la = abs($angle2-$angle1)/2.0+$angle1;
if( empty($this->explode_radius[$i]) )
$this->explode_radius[$i]=0;
$xcm = $xc + $this->explode_radius[$i]*cos($la);
$ycm = $yc - $this->explode_radius[$i]*sin($la);
$img->CakeSlice($xcm,$ycm,$radius-1,$radius-1,$angle1,$angle2,
$slicecolor,$arccolor);
if( $this->show_labels )
$this->StrokeLabels($this->labels[$i],$img,$xc,$yc,$la,
$radius+$this->explode_radius[$i]);
if ($this->csimtargets) {
$this->AddSliceToCSIM($i,$xcm,$ycm,$radius,$angle1,$angle2);
}
}
// Adjust title position
$this->title->Pos($xc,$yc-$img->GetFontHeight()-$radius,"center","bottom");
$this->title->Stroke($img);
}
//---------------
// PRIVATE METHODS
// Position the labels of each slice
function StrokeLabels($label,$img,$xc,$yc,$a,$r) {
$img->SetFont($this->font_family,$this->font_style,$this->font_size);
$img->SetColor($this->font_color);
$img->SetTextAlign("left","top");
$marg=6;
$r += $img->GetFontHeight()/2;
$xt=round($r*cos($a)+$xc);
$yt=round($yc-$r*sin($a));
// Position the axis title.
// dx, dy is the offset from the top left corner of the bounding box that sorrounds the text
// that intersects with the extension of the corresponding axis. The code looks a little
// bit messy but this is really the only way of having a reasonable position of the
// axis titles.
$h=$img->GetTextHeight($label);
$w=$img->GetTextWidth($label);
while( $a > 2*M_PI ) $a -= 2*M_PI;
if( $a>=7*M_PI/4 || $a <= M_PI/4 ) $dx=0;
if( $a>=M_PI/4 && $a <= 3*M_PI/4 ) $dx=($a-M_PI/4)*2/M_PI;
if( $a>=3*M_PI/4 && $a <= 5*M_PI/4 ) $dx=1;
if( $a>=5*M_PI/4 && $a <= 7*M_PI/4 ) $dx=(1-($a-M_PI*5/4)*2/M_PI);
if( $a>=7*M_PI/4 ) $dy=(($a-M_PI)-3*M_PI/4)*2/M_PI;
if( $a<=M_PI/4 ) $dy=(1-$a*2/M_PI);
if( $a>=M_PI/4 && $a <= 3*M_PI/4 ) $dy=1;
if( $a>=3*M_PI/4 && $a <= 5*M_PI/4 ) $dy=(1-($a-3*M_PI/4)*2/M_PI);
if( $a>=5*M_PI/4 && $a <= 7*M_PI/4 ) $dy=0;
$img->StrokeText($xt-$dx*$w,$yt-$dy*$h,$label);
}
} // Class
//===================================================
// CLASS PieGraph
// Description:
//===================================================
class PieGraph extends Graph {
var $posx, $posy, $radius;
var $legends=array();
var $plots=array();
//---------------
// CONSTRUCTOR
function PieGraph($width=300,$height=200,$cachedName="",$timeout=0,$inline=1) {
$this->Graph($width,$height,$cachedName,$timeout,$inline);
$this->posx=$width/2;
$this->posy=$height/2;
$this->SetColor(array(255,255,255));
}
//---------------
// PUBLIC METHODS
function Add(&$pie) {
$this->plots[] = $pie;
}
function SetColor($c) {
$this->SetMarginColor($c);
}
// Method description
function Stroke($aStrokeFileName="") {
$this->StrokeFrame();
for($i=0; $i<count($this->plots); ++$i)
$this->plots[$i]->Stroke($this->img);
foreach( $this->plots as $p)
$p->Legend($this);
$this->legend->Stroke($this->img);
$this->title->Center($this->img->left_margin,$this->img->width-$this->img->right_margin,5);
$this->title->Stroke($this->img);
// Stroke texts
if( $this->texts != null )
foreach( $this->texts as $t)
$t->Stroke($this->img);
if ($this->showcsim) {
foreach($this->plots as $p ) {
$csim.= $p->GetCSIMareas();
}
//$csim.= $this->legend->GetCSIMareas();
if (preg_match_all("/area shape=\"(\w+)\" coords=\"([0-9\, ]+)\"/", $csim, $coords)) {
$this->img->SetColor($this->csimcolor);
for ($i=0; $i<count($coords[0]); $i++) {
if ($coords[1][$i]=="poly") {
preg_match_all('/\s*([0-9]+)\s*,\s*([0-9]+)\s*,*/',$coords[2][$i],$pts);
$this->img->SetStartPoint($pts[1][count($pts[0])-1],$pts[2][count($pts[0])-1]);
for ($j=0; $j<count($pts[0]); $j++) {
$this->img->LineTo($pts[1][$j],$pts[2][$j]);
}
} else if ($coords[1][$i]=="rect") {
$pts = preg_split('/,/', $coords[2][$i]);
$this->img->SetStartPoint($pts[0],$pts[1]);
$this->img->LineTo($pts[2],$pts[1]);
$this->img->LineTo($pts[2],$pts[3]);
$this->img->LineTo($pts[0],$pts[3]);
$this->img->LineTo($pts[0],$pts[1]);
}
}
}
}
// Finally output the image
$this->cache->PutAndStream($this->img,$this->cache_name,$this->inline,$aStrokeFileName);
}
} // Class
/* EOF */
?>
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