Jpgraph Pie.php:
<?php
/*=======================================================================
// File: JPGRAPH_PIE.PHP
// Description: Pie plot extension for JpGraph
// Created: 2001-02-14
// Author: Johan Persson (johanp <at> aditus <dot> nu)
// Ver: $Id: jpgraph_pie.php, v 1.41 2003/01/30 15:08:09 aditus Exp $
//
// License: This code is released under QPL
// Copyright (C) 2001, 2002 Johan Persson
//========================================================================
*/
// Defines for PiePlot::SetLabelType()
DEFINE("PIE_VALUE_ABS", 1);
DEFINE("PIE_VALUE_PER", 0);
DEFINE("PIE_VALUE_PERCENTAGE", 0);
//===================================================
// CLASS PiePlot
// Description: Draws a pie plot
//===================================================
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=null, $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 $legend_margin=6, $show_labels=true;
var $themearr = array(
"earth" => array(136, 34, 40, 45, 46, 62, 63, 134, 74, 10, 120, 136, 141, 168, 180, 77, 209, 218, 346, 395, 89, 430),
"pastel" => array(27, 415, 128, 59, 66, 79, 105, 110, 42, 147, 152, 230, 236, 240, 331, 337, 405, 38),
"water" => array(8, 370, 24, 40, 335, 56, 213, 237, 268, 14, 326, 387, 10, 388),
"sand" => array(27, 168, 34, 170, 19, 50, 65, 72, 131, 209, 46, 393));
var $theme="earth";
var $setslicecolors=array();
var $labeltype=0; // Default to percentage
var $pie_border=true, $pie_interior_border=true;
var $value;
var $ishadowcolor='', $ishadowdrop=4;
var $ilabelposadj=1;
var $legendcsimtargets = array();
var $legendcsimalts = array();
//---------------
// CONSTRUCTOR
function PiePlot(&$data) {
$this->data = $data;
$this->title = new Text("");
$this->title->SetFont(FF_FONT1, FS_BOLD);
$this->value = new DisplayValue();
$this->value->Show();
$this->value->SetFormat('%.1f%%');
}
//---------------
// PUBLIC METHODS
function SetCenter($x, $y=0.5) {
$this->posx = $x;
$this->posy = $y;
}
function SetColor($aColor) {
$this->color = $aColor;
}
function SetShadow($aColor='darkgray', $aDropWidth=4) {
$this->ishadowcolor = $aColor;
$this->ishadowdrop = $aDropWidth;
}
function SetCSIMTargets($targets, $alts=null) {
$this->csimtargets=array_reverse($targets);
if( is_array($alts) )
$this->csimalts=array_reverse($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
while( $sa > 2*M_PI ) $sa = $sa - 2*M_PI;
while( $ea > 2*M_PI ) $ea = $ea - 2*M_PI;
$sa = 2*M_PI - $sa;
$ea = 2*M_PI - $ea;
//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($ea))+$xc);
$yp = floor($yc-$radius*sin($ea));
$coords.= ", $xp, $yp";
//add coordinates every 0.2 radians
$a=$ea+0.2;
while ($a<$sa) {
$xp = floor($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($sa)+$xc);
$yp = floor($yc-$radius*sin($sa));
$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\" title=\"$tmp\"";
}
$this->csimareas .= ">\n";
}
function SetTheme($aTheme) {
if( in_array($aTheme, array_keys($this->themearr)) )
$this->theme = $aTheme;
else
JpGraphError::Raise("PiePLot::SetTheme() Unknown theme: $aTheme");
}
function ExplodeSlice($e, $radius=20) {
$this->explode_radius[$e]=$radius;
}
function ExplodeAll($radius=20) {
$this->explode_all=true;
$this->explode_r = $radius;
}
function Explode($aExplodeArr) {
if( !is_array($aExplodeArr) ) {
JpGraphError::Raise("Argument to PiePlot::Explode() must be an array.");
}
$this->explode_radius = $aExplodeArr;
}
function SetSliceColors($aColors) {
$this->setslicecolors = array_reverse($aColors);
}
function SetStartAngle($aStart) {
if( $aStart < 0 || $aStart > 360 ) {
JpGraphError::Raise('Slice start angle must be between 0 and 360 degrees.');
}
$this->startangle = 360-$aStart;
}
function SetFont($family, $style=FS_NORMAL, $size=10) {
JpGraphError::Raise('PiePlot::SetFont() is deprecated. Use PiePlot->value->SetFont() instead.');
}
// Size in percentage
function SetSize($aSize) {
if( ($aSize>0 && $aSize<=0.5) || ($aSize>10 && $aSize<1000) )
$this->radius = $aSize;
else
JpGraphError::Raise("PiePlot::SetSize() Radius for pie must either be specified as a fraction
[0, 0.5] of the size of the image or as an absolute size in pixels
in the range [10, 1000]");
}
function SetFontColor($aColor) {
JpGraphError::Raise('PiePlot::SetFontColor() is deprecated. Use PiePlot->value->SetColor() instead.');
}
// Set label arrays
function SetLegends($aLegend) {
$this->legends = $aLegend;
}
// Set text labels for slices
function SetLabels($aLabels, $aLblPosAdj="auto") {
$this->labels = $aLabels;
$this->ilabelposadj=$aLblPosAdj;
}
function SetLabelPos($aLblPosAdj) {
$this->ilabelposadj=$aLblPosAdj;
}
// Should we display actual value or percentage?
function SetLabelType($t) {
if( $t<0 || $t>1 )
JpGraphError::Raise("PiePlot::SetLabelType() Type for pie plots must be 0 or 1 (not $t).");
$this->labeltype=$t;
}
function SetValueType($aType) {
$this->SetLabelType($aType);
}
// 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];
// Bail out with error if the sum is 0
if( $sum==0 )
JpGraphError::Raise("Illegal pie plot. Sum of all data is zero for Pie!");
// Make sure we don't plot more values than data points
// (in case the user added more legends than data points)
$n = min(count($this->legends), count($this->data));
if( $this->legends != "" )
$this->legends = array_reverse($this->legends);
for( $i=$n-1; $i >= 0; --$i ) {
$l = $this->legends[$i];
// 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]);
}
$alt = sprintf($this->csimalts[$i], $this->data[$i]);
if( $this->setslicecolors==null )
$graph->legend->Add($l, $colors[$ta[$i%$numcolors]], "", 0,
$this->csimtargets[$i], $alt);
else
$graph->legend->Add($l, $this->setslicecolors[$i%$numcolors], "", 0,
$this->csimtargets[$i], $alt);
}
}
function Stroke(&$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;
$n = count($this->data);
$this->data = array_reverse($this->data);
if( $this->labels != "" )
$this->labels = array_reverse($this->labels);
for($i=0; $i < $n; ++$i)
$sum += $this->data[$i];
// Bail out with error if the sum is 0
if( $sum==0 )
JpGraphError::Raise("Sum of all data is 0 for Pie.");
// Format the titles for each slice
for( $i=0; $i<count($this->data); ++$i) {
if( $this->labeltype==0 )
if( $sum != 0 )
$l = 100.0*$this->data[$i]/$sum;
else
$l = 0.0;
else
$l = $this->data[$i]*1.0;
if( isset($this->labels[$i]) && is_string($this->labels[$i]) )
$this->labels[$i]=sprintf($this->labels[$i], $l);
else
$this->labels[$i]=$l;
}
// Set up the pie-circle
if( $this->radius < 1 )
$this->radius = floor($this->radius*min($img->width, $img->height));
else
$this->radius = $this->radius;
$xc = round($this->posx*$img->width);
$yc = round($this->posy*$img->height);
$this->startangle = $this->startangle*M_PI/180;
if( $this->explode_all )
for($i=0;$i<count($this->data);++$i)
$this->explode_radius[$i]=$this->explode_r;
$n = count($this->data);
if( $this->ishadowcolor != "") {
$accsum=0;
$angle2 = $this->startangle;
$img->SetColor($this->ishadowcolor);
for($i=0; $sum>0 && $i < $n; ++$i) {
$d = $this->data[$i];
$angle1 = $angle2;
$accsum += $d;
$angle2 = $this->startangle+2*M_PI*$accsum/$sum;
if( empty($this->explode_radius[$i]) )
$this->explode_radius[$i]=0;
$la = 2*M_PI - (abs($angle2-$angle1)/2.0+$angle1);
$xcm = $xc + $this->explode_radius[$i]*cos($la);
$ycm = $yc - $this->explode_radius[$i]*sin($la);
$xcm += $this->ishadowdrop;
$ycm += $this->ishadowdrop;
$img->CakeSlice($xcm, $ycm, $this->radius, $this->radius,
$angle1*180/M_PI, $angle2*180/M_PI, $this->ishadowcolor);
}
}
$accsum=0;
$angle2 = $this->startangle;
$img->SetColor($this->color);
for($i=0; $sum>0 && $i < $n; ++$i) {
$d = $this->data[$i];
$angle1 = $angle2;
$accsum += $d;
$angle2 = $this->startangle+2*M_PI*$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 : "";
$this->la[$i] = 2*M_PI - (abs($angle2-$angle1)/2.0+$angle1);
if( empty($this->explode_radius[$i]) )
$this->explode_radius[$i]=0;
$xcm = $xc + $this->explode_radius[$i]*cos($this->la[$i]);
$ycm = $yc - $this->explode_radius[$i]*sin($this->la[$i]);
$img->CakeSlice($xcm, $ycm, $this->radius-1, $this->radius-1,
$angle1*180/M_PI, $angle2*180/M_PI, $slicecolor, $arccolor);
if ($this->csimtargets)
$this->AddSliceToCSIM($i, $xcm, $ycm, $this->radius, $angle1, $angle2);
}
if( $this->value->show )
$this->StrokeAllLabels($img, $xc, $yc);
// Adjust title position
$this->title->Pos($xc,
$yc-$this->title->GetFontHeight($img)-$this->radius-$this->title->margin,
"center", "bottom");
$this->title->Stroke($img);
}
//---------------
// PRIVATE METHODS
function StrokeAllLabels($img, $xc, $yc) {
$n = count($this->data);
for($i=0; $i < $n; ++$i) {
$this->StrokeLabel($this->labels[$i], $img, $xc, $yc, $this->la[$i],
$this->radius + $this->explode_radius[$i]);
}
}
// Position the labels of each slice
function StrokeLabel($label, $img, $xc, $yc, $a, $r) {
// Default value
if( $this->ilabelposadj === 'auto' )
$this->ilabelposadj = 0.65;
// We position the values diferntely depending on if they are inside
// or outside the pie
if( $this->ilabelposadj < 1.0 ) {
$this->value->SetAlign('center', 'center');
$this->value->margin = 0;
$xt=round($this->ilabelposadj*$r*cos($a)+$xc);
$yt=round($yc-$this->ilabelposadj*$r*sin($a));
$this->value->Stroke($img, $label, $xt, $yt);
}
else {
$this->value->halign = "left";
$this->value->valign = "top";
$this->value->margin = 0;
// 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.
$img->SetFont($this->value->ff, $this->value->fs, $this->value->fsize);
$h=$img->GetTextHeight($label);
$w=$img->GetTextWidth(sprintf($this->value->format, $label));
if( $this->ilabelposadj > 1.0 && $this->ilabelposadj < 5.0) {
$r *= $this->ilabelposadj;
}
$r += $img->GetFontHeight()/1.5;
$xt=round($r*cos($a)+$xc);
$yt=round($yc-$r*sin($a));
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;
$this->value->Stroke($img, $label, $xt-$dx*$w, $yt-$dy*$h);
}
}
} // Class
//===================================================
// CLASS PiePlotC
// Description: Same as a normal pie plot but with a
// filled circle in the center
//===================================================
class PiePlotC extends PiePlot {
var $imidsize=0.5; // Fraction of total width
var $imidcolor='white';
var $midtitle='';
var $middlecsimtarget="", $middlecsimalt="";
function PiePlotC($data, $aCenterTitle='') {
parent::PiePlot($data);
$this->midtitle = new Text();
$this->midtitle->ParagraphAlign('center');
}
function SetMid($aTitle, $aColor='white', $aSize=0.5) {
$this->midtitle->Set($aTitle);
$this->imidsize = $aSize ;
$this->imidcolor = $aColor ;
}
function SetMidTitle($aTitle) {
$this->midtitle->Set($aTitle);
}
function SetMidSize($aSize) {
$this->imidsize = $aSize ;
}
function SetMidColor($aColor) {
$this->imidcolor = $aColor ;
}
function SetMidCSIM($aTarget, $aAlt) {
$this->middlecsimtarget = $aTarget;
$this->middlecsimalt = $aAlt;
}
function AddSliceToCSIM($i, $xc, $yc, $radius, $sa, $ea) {
//Slice number, ellipse centre (x, y), radius, start angle, end angle
while( $sa > 2*M_PI ) $sa = $sa - 2*M_PI;
while( $ea > 2*M_PI ) $ea = $ea - 2*M_PI;
$sa = 2*M_PI - $sa;
$ea = 2*M_PI - $ea;
// Add inner circle first point
$xp = floor(($this->imidsize*$radius*cos($ea))+$xc);
$yp = floor($yc-($this->imidsize*$radius*sin($ea)));
$coords = "$xp, $yp";
//add coordinates every 0.25 radians
$a=$ea+0.25;
while ($a < $sa) {
$xp = floor(($this->imidsize*$radius*cos($a)+$xc));
$yp = floor($yc-($this->imidsize*$radius*sin($a)));
$coords.= ", $xp, $yp";
$a += 0.25;
}
// Make sure we end at the last point
$xp = floor(($this->imidsize*$radius*cos($sa)+$xc));
$yp = floor($yc-($this->imidsize*$radius*sin($sa)));
$coords.= ", $xp, $yp";
// Straight line to outer circle
$xp = floor($radius*cos($sa)+$xc);
$yp = floor($yc-$radius*sin($sa));
$coords.= ", $xp, $yp";
//add coordinates every 0.25 radians
$a=$sa - 0.25;
while ($a > $ea) {
$xp = floor($radius*cos($a)+$xc);
$yp = floor($yc-$radius*sin($a));
$coords.= ", $xp, $yp";
$a -= 0.25;
}
//Add the last point on the arc
$xp = floor($radius*cos($ea)+$xc);
$yp = floor($yc-$radius*sin($ea));
$coords.= ", $xp, $yp";
// Close the arc
$xp = floor(($this->imidsize*$radius*cos($ea))+$xc);
$yp = floor($yc-($this->imidsize*$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\" title=\"$tmp\"";
}
$this->csimareas .= ">\n";
}
function Stroke($img) {
// Stroke the pie but don't stroke values
$tmp = $this->value->show;
$this->value->show = false;
parent::Stroke($img);
$this->value->show = $tmp;
$xc = round($this->posx*$img->width);
$yc = round($this->posy*$img->height);
if( $this->ishadowcolor != "" ) {
$img->SetColor($this->ishadowcolor);
$img->FilledCircle($xc+$this->ishadowdrop, $yc+$this->ishadowdrop,
round($this->radius*$this->imidsize));
}
if( $this->imidsize > 0 ) {
$img->SetColor($this->imidcolor);
$img->FilledCircle($xc, $yc, round($this->radius*$this->imidsize));
if( $this->pie_border ) {
$img->SetColor($this->color);
$img->Circle($xc, $yc, round($this->radius*$this->imidsize));
}
if( !empty($this->middlecsimtarget) )
$this->AddMiddleCSIM($xc, $yc, round($this->radius*$this->imidsize));
}
if( $this->value->show )
$this->StrokeAllLabels($img, $xc, $yc);
$this->midtitle->Pos($xc, $yc, 'center', 'center');
$this->midtitle->Stroke($img);
}
function AddMiddleCSIM($xc, $yc, $r) {
$this->csimareas .= "<area shape=\"circle\" coords=\"$xc, $yc, $r\" href=\"".
$this->middlecsimtarget."\"";
if( !empty($this->middlecsimalt) ) {
$tmp = $this->middlecsimalt;
$this->csimareas .= " alt=\"$tmp\" title=\"$tmp\"";
}
$this->csimareas .= ">\n";
}
function StrokeLabel($label, $img, $xc, $yc, $a, $r) {
if( $this->ilabelposadj === 'auto' )
$this->ilabelposadj = (1-$this->imidsize)/2+$this->imidsize;
parent::StrokeLabel($label, $img, $xc, $yc, $a, $r);
}
}
//===================================================
// 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);
}
function DisplayCSIMAreas() {
$csim="";
foreach($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], $pts[1]);
}
}
}
}
// Method description
function Stroke($aStrokeFileName="") {
// If the filename is the predefined value = '_csim_special_'
// we assume that the call to stroke only needs to do enough
// to correctly generate the CSIM maps.
// We use this variable to skip things we don't strictly need
// to do to generate the image map to improve performance
// a best we can. Therefor you will see a lot of tests !$_csim in the
// code below.
$_csim = ($aStrokeFileName===_CSIM_SPECIALFILE);
// We need to know if we have stroked the plot in the
// GetCSIMareas. Otherwise the CSIM hasn't been generated
// and in the case of GetCSIM called before stroke to generate
// CSIM without storing an image to disk GetCSIM must call Stroke.
$this->iHasStroked = true;
if( !$_csim ) {
if( $this->background_image != "" ) {
$this->StrokeFrameBackground();
}
else {
$this->StrokeFrame();
}
}
$n = count($this->plots);
for($i=0; $i < $n; ++$i) {
$this->plots[$i]->Stroke($this->img);
$this->plots[$i]->Legend($this);
}
$this->legend->Stroke($this->img);
if( !$_csim ) {
$this->StrokeTitles();
// Stroke texts
if( $this->texts != null )
foreach( $this->texts as $t)
$t->Stroke($this->img);
if( JPG_DEBUG ) {
$this->DisplayCSIMAreas();
}
// If the filename is given as the special "__handle"
// then the image handler is returned and the image is NOT
// streamed back
if( $aStrokeFileName == _IMG_HANDLER ) {
return $this->img->img;
}
else {
// Finally stream the generated picture
$this->cache->PutAndStream($this->img, $this->cache_name, $this->inline,
$aStrokeFileName);
}
}
}
} // Class
/* EOF */
?>
Other Ad Management Scripts:
