<?php
require 'sector.php';
class PDF_Diag extends PDF_Sector {
    var $legends;
    var $wLegend;
    var $sum;
    var $NbVal;
    function PieChart($w, $h, $data, $format, $colors=null)
    {
        $this->SetFont('Courier', '', 10);
        $this->SetLegends($data,$format);
        $XPage = $this->GetX();
        $YPage = $this->GetY();
        $margin = 2;
        $hLegend = 5;
        $radius = min($w - $margin * 4 - $hLegend - $this->wLegend, $h - $margin * 2);
        $radius = floor($radius / 2);
        $XDiag = $XPage + $margin + $radius;
        $YDiag = $YPage + $margin + $radius;
        if($colors == null) {
            for($i = 0; $i < $this->NbVal; $i++) {
                $gray = $i * intval(255 / $this->NbVal);
                $colors[$i] = array($gray,$gray,$gray);
            }
        }
        //Sectors
        $this->SetLineWidth(0.2);
        $angleStart = 0;
        $angleEnd = 0;
        $i = 0;
        foreach($data as $val) {
            $angle = ($val * 360) / doubleval($this->sum);
            if ($angle != 0) {
                $angleEnd = $angleStart + $angle;
                $this->SetFillColor($colors[$i][0],$colors[$i][1],$colors[$i][2]);
                $this->Sector($XDiag, $YDiag, $radius, $angleStart, $angleEnd);
                $angleStart += $angle;
            }
            $i++;
        }
        //Legends
        $this->SetFont('Courier', '', 10);
        $x1 = $XPage + 2 * $radius + 4 * $margin;
        $x2 = $x1 + $hLegend + $margin;
        $y1 = $YDiag - $radius + (2 * $radius - $this->NbVal*($hLegend + $margin)) / 2;
        for($i=0; $i<$this->NbVal; $i++) {
            $this->SetFillColor($colors[$i][0],$colors[$i][1],$colors[$i][2]);
            $this->Rect($x1, $y1, $hLegend, $hLegend, 'DF');
            $this->SetXY($x2,$y1);
            $this->Cell(0,$hLegend,$this->legends[$i]);
            $y1+=$hLegend + $margin;
        }
    }
    function BarDiagram($w, $h, $data, $format, $color=null, $maxVal=0, $nbDiv=4)
    {
        $this->SetFont('Courier', '', 10);
        $this->SetLegends($data,$format);
        $XPage = $this->GetX();
        $YPage = $this->GetY();
        $margin = 2;
        $YDiag = $YPage + $margin;
        $hDiag = floor($h - $margin * 2);
        $XDiag = $XPage + $margin * 2 + $this->wLegend;
        $lDiag = floor($w - $margin * 3 - $this->wLegend);
        if($color == null)
            $color=array(155,155,155);
        if ($maxVal == 0) {
            $maxVal = max($data);
        }
        $valIndRepere = ceil($maxVal / $nbDiv);
        $maxVal = $valIndRepere * $nbDiv;
        $lRepere = floor($lDiag / $nbDiv);
        $lDiag = $lRepere * $nbDiv;
        $unit = $lDiag / $maxVal;
        $hBar = floor($hDiag / ($this->NbVal + 1));
        $hDiag = $hBar * ($this->NbVal + 1);
        $eBaton = floor($hBar * 80 / 100);
        $this->SetLineWidth(0.2);
        $this->Rect($XDiag, $YDiag, $lDiag, $hDiag);
        $this->SetFont('Courier', '', 10);
        $this->SetFillColor($color[0],$color[1],$color[2]);
        $i=0;
        foreach($data as $val) {
            //Bar
            $xval = $XDiag;
            $lval = (int)($val * $unit);
            $yval = $YDiag + ($i + 1) * $hBar - $eBaton / 2;
            $hval = $eBaton;
            $this->Rect($xval, $yval, $lval, $hval, 'DF');
            //Legend
            $this->SetXY(0, $yval);
            $this->Cell($xval - $margin, $hval, $this->legends[$i],0,0,'R');
            $i++;
        }
        //Scales
        for ($i = 0; $i <= $nbDiv; $i++) {
            $xpos = $XDiag + $lRepere * $i;
            $this->Line($xpos, $YDiag, $xpos, $YDiag + $hDiag);
            $val = $i * $valIndRepere;
            $xpos = $XDiag + $lRepere * $i - $this->GetStringWidth($val) / 2;
            $ypos = $YDiag + $hDiag - $margin;
            $this->Text($xpos, $ypos, $val);
        }
    }
    function SetLegends($data, $format)
    {
        $this->legends=array();
        $this->wLegend=0;
        $this->sum=array_sum($data);
        $this->NbVal=count($data);
        foreach($data as $l=>$val)
        {
            $p=sprintf('%.2f',$val/$this->sum*100).'%';
            $legend=str_replace(array('%l','%v','%p'),array($l,$val,$p),$format);
            $this->legends[]=$legend;
            $this->wLegend=max($this->GetStringWidth($legend),$this->wLegend);
        }
    }
}
?>