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baaChart.php
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baaChart.php
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<?php
/***********************************************************
* Class: baaChart
* Version: 1.4
* Date: Aug 2006
* Author: Barry Andrew
* Copyright: � BA Andrew 2003
* Licence Free for non-commercial use
* http://members.aol.com/barryaandrew/baaLic.html
***********************************************************
USAGE SAMPLE
include('baaChart.php');
$mygraph = new baaChart(600);
$mygraph->setTitle('Regional Sales','Jan - Jun 2002');
$mygraph->setXLabels("Jan,Feb,Mar,Apr,May,Jun,Jul,Aug,Sep,Oct,Nov,Dec");
$mygraph->setXAxis("Month",0);
$mygraph->setYAxis ('Regional Sales', 0, 100, 20, 0);
$mygraph->addDataSeries('L',LINE_MARK_X,"25,30,35,40,30,35","South");
$mygraph->addDataSeries('L',LINE_MARK_CIRCLE,"65,70,80,90,75,48","North");
$mygraph->addDataSeries('L',LINE_MARK_SQUARE,"12,18,25,20,22,30","West");
$mygraph->addDataSeries('L',LINE_MARK_DIAMOND ,"50,60,75,80,60,75","East");
$mygraph->addDataSeries('L',LINE_MARK_NONE,"30,45,50,55,52,60","Europe");
$mygraph->setBgColor(255,255,255,0);
$mygraph->drawGraph();
*/
/********************************************************
* defines *
********************************************************/
define ('VERSION', 'baaChart 1.4');
define ('PIE_NONE',0);
define ('PIE_LEGEND_PCENT',1);
define ('PIE_LEGEND_VALUE',2);
define ('PIE_CHART_VALUE',4);
define ('PIE_CHART_PCENT',8);
define ('LINE_MARK_NONE',0);
define ('LINE_MARK_PLUS',1);
define ('LINE_MARK_X',2);
define ('LINE_MARK_CIRCLE',3);
define ('LINE_MARK_SQUARE',4);
define ('LINE_MARK_DIAMOND',5);
define ('COLS_NO_STACK',0);
define ('COLS_STACKED',1);
/**
* baaChart
* Insert description here
*
* @category
* @package
* @author
* @copyright
* @license
* @version
* @link
* @see
* @since
*/
class baaChart {
/********************************************************
* Variables *
********************************************************/
var $image;
var $title;
var $subtitle;
var $bgd;
var $cbgd,$cbgd2; // chart band colours
var $txtcol;
var $white;
var $black;
var $gridcol;
var $width;
var $height;
var $cwidth,$cheight; // chart dimensions
var $scolors;
var $lm,$rm,$tm,$bm; // margins
var $ytitle; // y axis settings
var $ymin = 0;
var $ymax = 0;
var $ygrid = false;
var $ygridint;
var $xtitle; // x axis settings
var $xgrid = false;
var $xgridint;
var $xcount; // count of values in each series
var $seriescount;
var $colwidth;
var $transparent;
var $ispiechart;
var $legends;
var $stackcount;
var $xlabels;
var $data;
var $xmaxima; // series max values
var $xminima;
var $stypes; // series types
var $stacked; // series stacked?
var $stackbase;
var $pic;
var $clip;
var $picx;
var $picy;
var $picw;
var $pich;
var $pict;
var $pictrans;
var $bgimage;
var $bgx;
var $bgy;
var $showvals;
/********************************************************
* public methods *
********************************************************/
/**
*
* @param type $awidth
* @param type $aheight
* @param type $pic
* @param type $clip
* @param type $picx
* @param type $picy
*/
function baaChart ($awidth, $aheight=0, $pic='', $clip=0, $picx=0, $picy=0) {
$this->width = $awidth;
$this->height = $aheight==0 ? floor($awidth / 1.616) : $aheight;
$this->pic = $pic;
$this->clip = $clip;
$this->picx = $picx;
$this->picy = $picy;
$this->picw = 0;
$this->pich = 0;
$this->pict = 0;
$this->pictrans = 100;
if ($pic != '') {
$size = getimagesize($pic);
if ($size == null) {
$this->pic = '';
}
else {
list($this->picw, $this->pich, $this->pict) = $size;
}
}
$this->image = imagecreate($this->width, $this->height);
$this->bgd = imagecolorallocate($this->image,0xFF,0xFF,0xFF);
$this->white = imagecolorallocate($this->image,0xFF,0xFF,0xFF);
$this->cbgd = imagecolorallocate($this->image,0xEE,0xEE,0xEE);
$this->cbgd2 = imagecolorallocate($this->image,0xDD,0xDD,0xDD);
$this->txtcol = imagecolorallocate($this->image,0,0,0);
$this->black = imagecolorallocate($this->image,0,0,0);
$this->gridcol = imagecolorallocate($this->image,0x66,0x66,0x66);
$this->scolors = array (
0 => imagecolorallocate ($this->image,0xFF,0x66,0x66),
1 => imagecolorallocate ($this->image,0x66,0x66,0xCC),
2 => imagecolorallocate ($this->image,0x66,0xcc,0x66),
3 => imagecolorallocate ($this->image,0x99,0x00,0x99),
4 => imagecolorallocate ($this->image,0xFF,0xCC,0x00)
);
$this->tm = 50;
$this->bm = 50;
$this->lm = 80;
$this->rm = 20;
$this->cwidth = $this->width - ($this->lm + $this->rm);
$this->cheight = $this->height - ($this->tm + $this->bm);
$this->seriescount = 0;
$this->xcount = 0;
$this->legends = array();
$this->stackcount = array();
$this->xlabels = array();
$this->data = array();
$this->xmaxima = array(); // series max values
$this->xminima = array();
$this->stypes = array(); // series types
$this->stacked = array(); // series stacked?
$this->stackbase = array();
$this->showvals = array();
}
/**
* setMargins
* Insert description here
*
* @param $l
* @param $t
* @param $r
* @param $b
*
* @return
*
* @access
* @static
* @see
* @since
*/
function setMargins ($l=0, $t=0, $r=0, $b=0) {
if ($t>0) $this->tm = $t;
if ($b>0) $this->bm = $b;
if ($l>0) $this->lm = $l;
if ($r>0) $this->rm = $r;
}
/**
* setBgColor
* Insert description here
*
* @param $r
* @param $g
* @param $b
* @param $trans
*
* @return
*
* @access
* @static
* @see
* @since
*/
function setBgColor ($r, $g, $b, $trans=false) {
$this->bgd = imagecolorallocate($this->image,$r,$g,$b);
if ($this->pic != '') $trans = 1;
if ($trans==1)
imagecolortransparent($this->image,$this->bgd);
$this->transparent = $trans;
}
/**
* setChartBgColor
* Insert description here
*
* @param $r
* @param $g
* @param $b
* @param $asbg
*
* @return
*
* @access
* @static
* @see
* @since
*/
function setChartBgColor ($r, $g, $b, $asbg=0) {
if ($this->pic != '') $asbg = 1;
$this->cbgd = $asbg ? $this->bgd : imagecolorallocate($this->image,$r,$g,$b);
$this->cbgd2 = $this->cbgd;
}
/**
* setChartBgColor2
* Insert description here
*
* @param $r
* @param $g
* @param $b
*
* @return
*
* @access
* @static
* @see
* @since
*/
function setChartBgColor2 ($r, $g, $b) {
$this->cbgd2 = imagecolorallocate($this->image,$r,$g,$b);
}
/**
* setTextColor
* Insert description here
*
* @param $r
* @param $g
* @param $b
*
* @return
*
* @access
* @static
* @see
* @since
*/
function setTextColor ($r, $g, $b) {
$this->txtcol = imagecolorallocate($this->image,$r,$g,$b);
}
/**
* setGridColor
* Insert description here
*
* @param $r
* @param $g
* @param $b
*
* @return
*
* @access
* @static
* @see
* @since
*/
function setGridColor ($r, $g, $b) {
$this->gridcol = imagecolorallocate($this->image,$r,$g,$b);
}
/**
* setSeriesColor
* Insert description here
*
* @param $n
* @param $r
* @param $g
* @param $b
*
* @return
*
* @access
* @static
* @see
* @since
*/
function setSeriesColor ($n, $r, $g, $b) {
if ($n<1) $n=1;
$this->scolors[$n-1] = imagecolorallocate($this->image,$r,$g,$b);
}
/**
* setTitle
* Insert description here
*
* @param $aTitle
* @param $aSub
*
* @return
*
* @access
* @static
* @see
* @since
*/
function setTitle ($aTitle,$aSub='') {
if ($aTitle) $this->title = $aTitle;
if ($aSub) $this->subtitle = $aSub;
}
/**
* setYAxis
* Insert description here
*
* @param $title
* @param $min
* @param $max
* @param $gridint
* @param $grid
*
* @return
*
* @access
* @static
* @see
* @since
*/
function setYAxis($title='',$min=0,$max=0,$gridint=0,$grid=0) {
$this->ytitle = $title;
$this->ymin = $min;
$this->ymax = $max;
$this->ygrid = $grid;
$this->ygridint = $gridint < 2 ? 10 : $gridint;
}
/**
* setXAxis
* Insert description here
*
* @param $title
* @param $grid
*
* @return
*
* @access
* @static
* @see
* @since
*/
function setXAxis ($title, $grid=0) {
$this->xtitle = $title;
$this->xgrid = $grid;
}
/**
* setXLabels
* Insert description here
*
* @param $labs
*
* @return
*
* @access
* @static
* @see
* @since
*/
function setXLabels ($labs) {
$this->xlabels = is_array($labs) ? $labs : explode(",",$labs);
$this->xcount = count($this->xlabels);
}
/**
* addDataSeries
* Insert description here
*
* @param $type
* @param $stacked
* @param $vals
* @param $legend
*
* @return
*
* @access
* @static
* @see
* @since
*/
function addDataSeries ($type,$stacked,$vals,$legend) {
$n = $this->seriescount++;
$this->stypes[$n] = $type;
$this->stacked[$n] = $stacked;
$d = is_array($vals) ? $vals : explode(",",$vals);
$this->xmaxima[$n] = max($d);
$this->xminima[$n] = min($d);
$dc = count($d);
if ($this->xcount < $dc) {
for ($i=$this->xcount,$L = 'A'; $i < $dc; $i++, $L++)
$this->xlabels[$i] = $L;
$this->xcount = $dc;
}
if ($dc < $this->xcount) array_pad($d,$this->xcount,0);
$this->data[$n] = $d;
$this->legends[$n] = $legend=='' ? '_' : $legend;
$this->showvals[$n] = 0;
}
/**
* setBgImagePos
* Insert description here
*
* @param $x
* @param $y
*
* @return
*
* @access
* @static
* @see
* @since
*/
function setBgImagePos($x, $y) {
$this->bgx = $x;
$this->bgy = $y;
}
/**
* setBgImageAlpha
* Insert description here
*
* @param $val
*
* @return
*
* @access
* @static
* @see
* @since
*/
function setBgImageAlpha($val) {
$this->pictrans = $val;
}
/**
* showValues
* Insert description here
*
* @param $series
*
* @return
*
* @access
* @static
* @see
* @since
*/
function showValues($series) {
$this->showvals[$series] = 1;
}
/**
* drawGraph
* Insert description here
*
* @param $filename
*
* @return
*
* @access
* @static
* @see
* @since
*/
function drawGraph($filename='') {
header("Content-Type: image/png");
$this->_draw();
if ($filename!='') imagepng( $this->image, $filename );
imagepng( $this->image );
imagedestroy( $this->image );
if ($this->bgimage) imagedestroy( $this->bgimage );
exit();
}
/**
* display
* Insert description here
*
* @param $filename
*
* @return
*
* @access
* @static
* @see
* @since
*/
function display($filename='') {
$this->drawGraph($filename);
}
/********************************************************
* private methods *
********************************************************/
function _draw() {
$a = array_keys($this->stypes,'P');
$this->ispiechart = count($a)>0;
$this->_calcrmargin();
imagefilledrectangle($this->image,0,0,$this->width-1,$this->height-1,$this->bgd);
if ($this->pic != '') $this->_backgroundImage();
if ($this->pic == '') {
if (!$this->transparent)
imagerectangle($this->image,0,0,$this->width-1,$this->height-1,$this->txtcol);
imagefilledrectangle($this->image, $this->lm, $this->tm, $this->width-$this->rm, $this->height-$this->bm, $this->cbgd);
}
$this->stackcount=0;
for ($s=0; $s<$this->seriescount; $s++) {
if (($this->stypes[$s] == 'C') && ($this->stacked[$s]==1)) $this->stackcount++;
}
// imagestring($this->image, 1, 2,$this->height-10,VERSION,$this->txtcol);
$this->_drawtitles();
$this->_drawaxes();
$this->_drawlegends();
$this->stackbase = array_pad($this->stackbase,$this->xcount,0);
for ($i=0; $i<$this->seriescount; $i++) $this->_plotSeries($i);
}
/**
* _drawpieval
* Insert description here
*
* @param $i
* @param $alpha
* @param $x
* @param $y
* @param $r
*
* @return
*
* @access
* @static
* @see
* @since
*/
function _drawpieval($i,$alpha,$x,$y,$r) {
$pietot = 0;
for ($s=0; $s<$this->seriescount; $s++) {
if ($this->stypes[$s]=='P') $pietot += array_sum($this->data[$s]);
}
$val = array_sum($this->data[$i]);
$pc = sprintf('%0.1f%%',$val * 100 / $pietot);
$tx = $x + $r*0.75 * cos(deg2rad($alpha));
$ty = $y + $r*0.75 * sin(deg2rad($alpha));
$fw = imagefontwidth(2);
switch (($this->stacked[$i]>>2) & 0x3) {
case 1: //plot value
$tw = strlen($val)*$fw;
$tx -= $tw/2;
imagefilledrectangle($this->image,$tx-2,$ty-6,$tx + $tw + 2,$ty+6,$this->white);
imagestring($this->image,2,$tx,$ty-5,$val,$this->txtcol);
break;
case 2: // plot %
case 3:
$tw = strlen($pc)*$fw;
$tx -= $tw/2;
imagefilledrectangle($this->image,$tx-2,$ty-6,$tx + $tw + 2,$ty+6,$this->white);
imagestring($this->image,2,$tx,$ty-5,$pc,$this->txtcol);
break;
}
}
/**
* pielegends
* Insert description here
*
*
* @return
*
* @access
* @static
* @see
* @since
*/
function pielegends() {
$pietot = 0;
for ($s=0; $s<$this->seriescount; $s++) {
if ($this->stypes[$s]=='P') $pietot += array_sum($this->data[$s]);
}
$a = array_keys($this->stypes,'P');
$maxt = $maxv = 0;
foreach ($a as $pie) {
$val = array_sum($this->data[$pie]);
$maxv = max($maxv, strlen($val));
$txt = $this->legends[$pie];
$maxt = max($maxt, strlen($txt));
}
foreach ($a as $pie) {
$val = array_sum($this->data[$pie]);
$pc = $val * 100 / $pietot;
switch ($this->stacked[$pie] & 0x03) {
case 1 : $this->legends[$pie] = sprintf("%-{$maxt}s %4.1f%%",$this->legends[$pie],$pc); break;
case 2 : $this->legends[$pie] = sprintf("%-{$maxt}s %{$maxv}s",$this->legends[$pie],$val); break;
case 3 : $this->legends[$pie] = sprintf("%-{$maxt}s %{$maxv}s %4.1f%%",$this->legends[$pie],$val,$pc); break;
}
}
}
/**
* _calcrmargin
* Insert description here
*
*
* @return
*
* @access
* @static
* @see
* @since
*/
function _calcrmargin() {
if ($this->ispiechart) {
$this->pielegends();
}
$leglen = array();
foreach($this->legends as $leg) {
$leglen[] = strlen($leg);
}
$maxleglen = max($leglen);
if ($maxleglen==0) return;
$legwid = $maxleglen * imagefontwidth(2) + 30;
$this->rm = max($this->rm, $legwid);
$this->cwidth = $this->width - $this->lm - $this->rm;
$this->xgridint = ($this->cwidth / $this->xcount);
$maxlabwid = $this->_maxlab();
if ($maxlabwid > $this->xgridint) {
$this->bm = max($this->bm,$maxlabwid+40);
$this->cheight = $this->height - $this->tm - $this->bm;
}
}
/**
* _drawlegends
* Insert description here
*
*
* @return
*
* @access
* @static
* @see
* @since
*/
function _drawlegends() {
$legx = $this->lm + $this->cwidth + 5;
$legy = $this->tm;
if ($this->stackcount>0) {
$this->legends = array_reverse($this->legends,true);
}
foreach ($this->legends as $k=>$leg) {
if ($leg != '_') {
switch ($this->stypes[$k]) {
case 'C':
if ($this->ispiechart) break;
case 'P':
imagefilledrectangle($this->image,$legx,$legy,$legx+15,$legy+15,$this->scolors[$k]);
imagerectangle($this->image,$legx,$legy,$legx+15,$legy+15,$this->black);
imagestring($this->image,2,$legx+20,$legy+1,$leg,$this->txtcol);
break;
case 'L':
if ($this->ispiechart) break;
if ($this->stacked[$k]>=0) {
imageline($this->image,$legx,$legy+7,$legx+15,$legy+7,$this->scolors[$k]);
imageline($this->image,$legx,$legy+8,$legx+15,$legy+8,$this->scolors[$k]);
imageline($this->image,$legx,$legy+9,$legx+15,$legy+9,$this->scolors[$k]);
}
$this->_drawmarker($legx+8,$legy+8,$this->stacked[$k], $this->scolors[$k]);
imagestring($this->image,2,$legx+20,$legy+1,$leg,$this->txtcol);
}
$legy += 20;
}
}
}
/**
* _val2y
* Insert description here
*
* @param $v
* @param $base
*
* @return
*
* @access
* @static
* @see
* @since
*/
function _val2y($v, $base=0) {
$rv = $v + $base - $this->ymin;
$ppu = $this->cheight/($this->ymax - $this->ymin);
return $this->tm + $this->cheight - ($rv * $ppu) ;
}
/**
* _drawmarker
* Insert description here
*
* @param $x
* @param $y
* @param $m
* @param $c
*
* @return
*
* @access
* @static
* @see
* @since
*/
function _drawmarker($x,$y,$m, $c) {
$fill = $m < 0 ? $c : $this->white;
$line = $m < 0 ? $c : $this->black;
switch (abs($m)) {
case 1:
$x0 = $x-3; $x1 = $x+3; imageline($this->image,$x0,$y,$x1,$y,$line);
$y0 = $y-3; $y1 = $y+3; imageline($this->image,$x,$y0,$x,$y1,$line);
break;
case 2:
$x0 = $x-3; $x1 = $x+3;
$y0 = $y-3; $y1 = $y+3;
imageline($this->image,$x0,$y0,$x1,$y1,$line);
imageline($this->image,$x1,$y0,$x0,$y1,$line);
break;
case 3:
$w = $h = 8;
imagearc($this->image,$x,$y,$w,$h,0,361,$this->black);
imagefill($this->image,$x,$y,$fill);
break;
case 4:
$x0 = $x-3; $x1 = $x+3;
$y0 = $y-3; $y1 = $y+3;
imagefilledrectangle($this->image,$x0,$y0,$x1,$y1,$fill);
imagerectangle($this->image,$x0,$y0,$x1,$y1,$this->black);
break;
case 5:
$p[] = $x; $p[] = $y-4; $p[] = $x+4; $p[] = $y;
$p[] = $x; $p[] = $y+4; $p[] = $x-4; $p[] = $y;
imagefilledpolygon($this->image,$p,4,$fill);
imagepolygon($this->image,$p,4,$this->black);
}
}
/**
* _plotseries
* Insert description here
*
* @param $i
*
* @return
*
* @access
* @static
* @see
* @since
*/
function _plotseries($i) {
$valposArray = array();
switch ($this->stypes[$i]) {
case 'L':
if ($this->ispiechart) break;
$this->colwidth = $this->xgridint - 4;
for ($p=0; $p<$this->xcount; $p++) {
$pts[$p][0] = $this->lm + $p * $this->xgridint + $this->xgridint/2;
$pts[$p][1] = $this->_val2y($this->data[$i][$p]);
$valposArray[$i][$p] = array($pts[$p][0], $pts[$p][1], $pts[$p][1]);
}
for ($p=1; $p<$this->xcount; $p++) {
if (!isset($this->data[$i][$p])) continue;
if ($this->stacked[$i]<0) continue;
imageline($this->image,$pts[$p-1][0],$pts[$p-1][1],$pts[$p][0],$pts[$p][1],$this->scolors[$i]);
imageline($this->image,$pts[$p-1][0],$pts[$p-1][1]-1,$pts[$p][0],$pts[$p][1]-1,$this->scolors[$i]);
imageline($this->image,$pts[$p-1][0],$pts[$p-1][1]+1,$pts[$p][0],$pts[$p][1]+1,$this->scolors[$i]);
}
if ($this->stacked[$i]!=0) {
for ($p=0; $p<$this->xcount; $p++) {
if (!isset($this->data[$i][$p])) continue;
$this->_drawmarker($pts[$p][0],$pts[$p][1],$this->stacked[$i], $this->scolors[$i]);
}
}
$this->_drawVals($valposArray);
break;
case 'C':
if ($this->ispiechart) break;
$stacked = $this->stackcount>0;
$b = array_keys($this->stypes,'C');
$colpos = 0;
if (!$stacked){
while (list($k,$v)=each($b)) {
if ($v==$i) break;
$colpos++;
}
}
for ($p=0; $p<$this->xcount; $p++) {
$x0 = $this->lm + 5 + $p * $this->xgridint + $colpos * $this->colwidth;
$x1 = $x0 + $this->colwidth;
$y0 = $this->_val2y($this->data[$i][$p],$this->stackbase[$p]);
$y1 = $this->_val2y($this->stackbase[$p],(0>$this->ymin)?(0):($this->ymin));
if ($stacked) $this->stackbase[$p] += $this->data[$i][$p];
if(0 > $this->data[$i][$p])
{
$t = $y0;
$y0 = $y1;
$y1 = $t;
}
$valposArray[$i][$p] = array($x0+($x1-$x0)/2, $y0, $y1);
imagefilledrectangle($this->image,$x0,$y0,$x1,$y1,$this->scolors[$i]);
imagerectangle($this->image,$x0,$y0,$x1,$y1,$this->black);
}
if (!$stacked) $this->_drawVals($valposArray);
break;
case 'P':
$x = ($this->lm + $this->cwidth + $this->lm)/2;
$y = ($this->tm + $this->cheight + $this->tm)/2;
$w = $h = min($this->cwidth, $this->cheight) - 10;
$pietot = 0;
for ($s=0; $s<$this->seriescount; $s++) {
if ($this->stypes[$s]=='P') $pietot += array_sum($this->data[$s]);
}
$alpha = $this->stackbase[0];
$theta = array_sum($this->data[$i])*360 / $pietot;
imagefilledarc($this->image,$x,$y,$w,$h,$alpha,$alpha+$theta,$this->scolors[$i],IMG_ARC_PIE);
$this->_drawpieval($i,$alpha+$theta/2,$x,$y,$w/2);
$this->stackbase[0] += $theta;
}
}
/**
* _drawVals
* Insert description here
*
* @param $posArray
*
* @return
*
* @access
* @static
* @see
* @since
*/
function _drawVals($posArray) {
$marray = array();
foreach ($this->data as $i => $parray) {
foreach ($parray as $v) {
$marray[] = strlen($v) * imagefontwidth(1);
}
}
$maxwidth = max($marray);
$rotate = 0;
if ($this->stypes[$i]=='C') {
$rotate = $maxwidth > $this->colwidth-4 ? 1 : 0;
}
if ($rotate && (imagefontheight(2) > $this->colwidth-4) )
return; // insufficient space
foreach ($this->data as $i => $parray) {
if (!$this->showvals[$i+1]) continue;
foreach ($parray as $p => $v) {
$boxwidth = strlen($v) * imagefontwidth(2) + 2;
$boxheight = imagefontheight(2);
$posdata = $posArray[$i][$p];
$posx = $posdata[0];
$posy = $posdata[1]-5;
$posy1 = $posdata[2]-5;
switch ($rotate) {
case 0:
$x0 = $posx - ($boxwidth / 2);
$x1 = $posx + ($boxwidth / 2);
$y0 = $posy - $boxheight;
$y1 = $posy;
imagefilledrectangle($this->image, $x0, $y0, $x1, $y1, $this->white);
imagerectangle($this->image, $x0, $y0, $x1, $y1, $this->black);
imagestring($this->image, 2, $x0+2, $y0, $v, $this->black);
break;
case 1:
$x0 = $posx - ($boxheight / 2);
$x1 = $posx + ($boxheight / 2);
$y1 = $v < 0 ? $posy : $posy1;
$y0 = $y1 - $boxwidth;
imagefilledrectangle($this->image, $x0, $y0, $x1, $y1, $this->white);
imagerectangle($this->image, $x0, $y0, $x1, $y1, $this->black);
imagestringup($this->image, 2, $x0+2, $y1-2, $v, $this->black);
break;
}
}
}
}
/**
* _drawtitles
* Insert description here
*
*
* @return
*
* @access
* @static
* @see
* @since
*/
function _drawtitles() {
$cw = imagefontwidth(5);
$l = strlen($this->title);
$tw = $cw*$l;
$x = $this->lm + ($this->cwidth - $tw)/2;
imagestring ($this->image,5,$x, 5, $this->title, $this->txtcol);
$cw = imagefontwidth(4);
$l = strlen($this->subtitle);
$tw = $cw*$l;
$x = $this->lm + ($this->cwidth - $tw)/2;
imagestring ($this->image,4,$x, 25, $this->subtitle, $this->txtcol);
}
/**
* _drawaxes
* Insert description here
*
*
* @return
*
* @access
* @static
* @see
* @since
*/
function _drawaxes() {
if ($this->ispiechart) return;
$changed = 0;
$ym = $this->_calcymax();
if (isset($this->ygridint)) {
if ($this->ygridint < 2)
$this->ygridint = ($this->ymax - $this->ymin)/4;
}
else $this->ygridint = ($this->ymax - $this->ymin)/4;
$i = $this->ygridint;
if ($this->ymax < $ym ) {
$this->ymax = floor(($ym + $i)/$i) * $i;
$changed = 1;
}
$yn = min($this->xminima);
if ($this->ymin > $yn) {
$this->ymin = floor(($yn - $i)/$i) * $i;
$changed = 1;
}
$this->_drawyaxis();
$this->_drawxaxis();
}
/**
* _drawyaxis
* Insert description here
*
*
* @return
*
* @access
* @static
* @see
* @since
*/
function _drawyaxis() {
$x0 = $this->lm;
$y0 = $this->tm + $this->cheight;
$x1 = $x0;