plugin_chart.php

<?php
/*
This file is part of Mkframework.

Mkframework is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation, either version 3 of the License.

Mkframework is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public License
along with Mkframework.  If not, see <http://www.gnu.org/licenses/>.

*/
class plugin_chart{

    public static $PIE='PIE';
    public static $HISTO='HISTO';
    public static $LINES='LINES';
    public static $BAR='BAR';
    
    private $iWidth;
    
    private $oChart;

    public function __construct($sType,$iWidth=null,$iHeight=null){
        $this->iWidth=$iWidth;
        $this->iHeight=$iHeight;
        
        if($sType==self::$PIE){
            $this->oChart=new plugin_chartPie($this->iWidth,$this->iHeight);
        }else if($sType==self::$HISTO){
            $this->oChart=new plugin_chartHisto($this->iWidth,$this->iHeight);
        }else if($sType==self::$LINES){
            $this->oChart=new plugin_chartLine($this->iWidth,$this->iHeight);
        }else if($sType==self::$BAR){
            $this->oChart=new plugin_chartBar($this->iWidth,$this->iHeight);
        }else{
            throw new Exception('sType non reconnu, attendu: (PIE,HISTO,LINES,BAR)');
        }
    }
    
    public function setData($tData){
        $this->oChart->setData($tData);
    }
    
    public function show(){ 
        return $this->oChart->show();
    }
    
    public function addGroup($sLabel,$sColor){
        $this->oChart->addGroup($sLabel,$sColor);
    }
    public function addPoint($x,$y){
        $this->oChart->addPoint($x,$y);
    }
    
    public function setMarginLeft($x){
        $this->oChart->setMarginLeft($x);
    }
    public function setMaxX($x){
        $this->oChart->setMaxX($x);
    }
    public function setMinX($x){
        $this->oChart->setMinX($x);
    }
    public function setMaxY($x){
        $this->oChart->setMaxY($x);
    }
    public function setMinY($x){
        $this->oChart->setMinY($x);
    }
    public function addMarkerY($y,$color='#ccc'){
        $this->oChart->addMarkerY($y,$color);
    }
    public function setPaddingX($padding){
        $this->oChart->setPaddingX($padding);
    }
    public function setPaddingY($padding){
        $this->oChart->setPaddingY($padding);
    }
    public function setGridY($y,$color){
        $this->oChart->setGridY($y,$color);
    }
    public function setTextSizeLegend($size){
        $this->oChart->setTextSizeLegend($size);
    }
    public function setCoordLegend($x,$y){
        $this->oChart->setCoordLegend($x,$y);
    }
    public function setStepX($stepX){
        $this->oChart->setStepX($stepX);
    }
    public function setStepY($stepY){
        $this->oChart->setStepY($stepY);
    }
    
}
class abstract_pluginChart{
    protected $tData;
    protected $iWidth;
    protected $height;
    
    protected $id;
    
    public static $uid=0;
    
    protected $iMax=0;
    
    protected $sHtml;
    
    protected $tColor;
    
    protected $iMarginLeft;
    protected $iMinX;
    protected $iMaxX;   
    protected $iMinY;
    protected $iMaxY;
    
    protected $tMarkerY=array();
    
    protected $paddingX;
    protected $paddingY;
    
    protected $gridY;
    
    protected $textsizeLegend;
    
    protected $legendX=200;
    protected $legendY=50;
    
    protected $stepX=null;
    protected $stepY=null;
    
    public function __construct($iWidth=null,$iHeight=null){
        $this->iWidth=$iWidth;
        $this->iHeight=$iHeight;
        
        $this->tColor=array(
                'green',
                'blue',
                'red',
        );
        
        self::$uid+=1;
        
        $this->id='canvasPluginChart'.self::$uid;
        
        $this->iMarginLeft=0;
        $this->textsizeLegend=12;
    }
    public function setData($tData){
        $this->tData=$tData;
    }
    public function setColorTab($tColor){
        $this->tColor=$tColor;
    }
    public function setMarginLeft($iMarginLeft){
        $this->iMarginLeft=$iMarginLeft;
    }
    public function setMaxX($iMaxX){
        $this->iMaxX=$iMaxX;
    }
    public function setMinX($iMinX){
        $this->iMinX=$iMinX;
    }
    public function setMaxY($iMaxX){
        $this->iMaxY=$iMaxX;
    }
    public function setMinY($iMinX){
        $this->iMinY=$iMinX;
    }
    public function addMarkerY($y,$color='#444'){
        $this->tMarkerY[]=array($y,$color);
    }
    public function setPaddingX($padding){
        $this->paddingX=$padding;
    }
    public function setPaddingY($padding){
        $this->paddingY=$padding;
    }
    public function setGridY($y,$color){
        $this->gridY=array($y,$color);
    }
    public function setTextSizeLegend($size){
        $this->textsizeLegend=$size;
    }
    public function setCoordLegend($x,$y){
        $this->legendX=$x;
        $this->legendY=$y;
    }
    
    public function setStepX($stepX){
        $this->stepX=$stepX;
    }
    public function setStepY($stepY){
        $this->stepY=$stepY;
    }
    
    
    public function loadCanvas(){
        $this->sHtml.='<canvas id="'.$this->id.'" width="'.$this->iWidth.'px" height="'.$this->iHeight.'px" ></canvas>';
        
        $this->startScript();
        
        $this->sHtml.='var canvas = document.getElementById("'.$this->id.'"); ';
        $this->sHtml.='var context = canvas.getContext("2d")';
        
        $this->endScript();
    }
    
    public function startScript(){
        $this->sHtml.='<script>';
    }
    public function endScript(){
        $this->sHtml.='</script>';
    }
    
    protected function rect($x,$y,$iWidth,$iHeight,$sColor){
        $this->sHtml.='context.beginPath();'."\n";
        $this->sHtml.='context.fillStyle="'.$sColor.'";   '."\n";
        $this->sHtml.='context.rect('.$x.','.$y.','.$iWidth.','.$iHeight.');'."\n";
        $this->sHtml.='context.fill();'."\n";
    }
    
    protected function partPie($x,$y,$diameter,$degStart,$degEnd,$sColor){
        $this->sHtml.='context.fillStyle="'.$sColor.'";'."\n";
        $this->sHtml.='context.beginPath(); '."\n";
        $this->sHtml.='context.arc('.$x.','.$y.','.$diameter.','.$degStart.','.$degEnd.');'."\n";
        $this->sHtml.='context.lineTo('.$x.','.$y.');'."\n";
        $this->sHtml.='context.fill();'."\n";
    }
    
    protected function text($x,$y,$sText,$sColor='black',$font='10px arial'){
        $this->sHtml.='context.font="'.$font.'";'."\n";
        $this->sHtml.='context.fillStyle="'.$sColor.'";   '."\n";
        $this->sHtml.='context.fillText("'.$sText.'",'.$x.','.$y.');'."\n";
    }
    
    protected function lineFromTo($x,$y,$x2,$y2,$sColor='black',$opacity=1){
        
        $this->sHtml.='context.globalAlpha='.$opacity.';'."\n";
        
        $this->sHtml.='context.strokeStyle="'.$sColor.'";'."\n";
        $this->sHtml.='context.beginPath(); '."\n";
        $this->sHtml.='context.moveTo('.$x.','.$y.'); '."\n";
        $this->sHtml.='context.lineTo('.$x2.','.$y2.');'."\n";
        $this->sHtml.='context.stroke();'."\n";
        
        $this->sHtml.='context.globalAlpha=1;'."\n";
    }
}
class plugin_chartPie extends abstract_pluginChart{
    
    public function show(){
        
        
        $this->loadCanvas();
        
        $iTotal=0;
        foreach($this->tData as $tLine){
            list($sLabel,$iValue)=$tLine;
            
            $iTotal+=$iValue;
        }
        
        $this->startScript();
        
        $diameter=($this->iWidth/4)-10;
        
        $x=$diameter+2;
        $y=$diameter+2;
        
        
        $degTotal=6.3;
        
        $degStart=0;
        
        $this->sHtml.='context.beginPath(); '."\n";
        $this->sHtml.='context.arc('.$x.','.$y.','.$diameter.',0,Math.PI*2);'."\n";
        
        $tPct=array();
        
        foreach($this->tData as $j => $tLine){
            list($sLabel,$iValue)=$tLine;
            
            $pct=($iValue/$iTotal);
            $degEnd=$pct*$degTotal;
            $degEnd+=$degStart;
            
            $tPct[$j]=$pct*100;
            
            $this->partPie($x,$y,$diameter,$degStart,$degEnd,$this->tColor[$j]);
            
            $degStart=$degEnd;
            
        }
        
        foreach($this->tData as $i => $tLine){
            list($sLabel,$iValue)=$tLine;
            
            $x=$this->legendX;
            $y=$i*20+$this->legendY;
            
            $this->rect($x,$y-8,10,10,$this->tColor[$i]);
            $this->text($x+16,$y,$sLabel.': '.$tPct[$i].'%','#000',$this->textsizeLegend);
            
        }
        
        $this->endScript();
        
        return $this->sHtml;
    }
        
        
    
}
class plugin_chartHisto extends abstract_pluginChart{
    
    public function show(){
        $this->loadCanvas();
        
        foreach($this->tData as $tLine){
            list($sLabel,$iValue)=$tLine;
            
            if($iValue > $this->iMax){
                $this->iMax=$iValue;
            }
        }
        $iWidthBar=($this->iWidth-200)/count($this->tData);
        $iWidthBar=$iWidthBar*0.8;
                
        $this->startScript();
        
        
        
        $j=0;
        foreach($this->tData as $j=> $tLine){
            list($sLabel,$iValue)=$tLine;
            
            $iHeight=1-(($iValue/$this->iMax)*($this->iHeight-24));
            
            $this->rect($j*($iWidthBar+3),$this->iHeight,($iWidthBar),$iHeight,$this->tColor[$j]);
            
            $j++;
        }
        
        //legend
        $i=0;
        foreach($this->tData as $j => $tDetail){
            $sLabel=$tDetail[0];
            
            $x=$this->legendX;
            $y=$i*20+$this->legendY;
            
            $this->rect($x,$y-8,10,10,$this->tColor[$j]);
            $this->text($x+16,$y,$sLabel,'#000',$this->textsizeLegend);
            
            $i++;
        }
        
        $this->lineFromTo(0,0,0,$this->iHeight);
        $this->lineFromTo(0,$this->iHeight,$this->iWidth-200,$this->iHeight);
        
        $this->endScript();
        
        return $this->sHtml;
    }
}
class plugin_chartLine extends abstract_pluginChart{
    
    private $tmpGroup;
    
    
    
    
    public function show(){
        $this->loadCanvas();
        
        $iMaxX=0;
        $iMaxY=0;
        
        $iMinX='';
        $iMinY='';
        
        
        
        foreach($this->tData as $sGroup => $tDetail){
            foreach($tDetail['tPoint'] as $tPoint){
            
                list($x,$y)=$tPoint;
                
                if($iMaxX < $x){
                    $iMaxX=$x;
                }
                if($iMaxY < $y){
                    $iMaxY=$y;
                }
                
                if($iMinX=='' or $iMinX > $x){
                    $iMinX=$x;
                }
                if($iMinY=='' or $iMinY > $y){
                    $iMinY=$y;
                }
                
            }
        }
        
        
        if($this->iMaxX){
            $iMaxX=$this->iMaxX;
        }
        if($this->iMinX){
            $iMinX=$this->iMinX;
        }
        if($this->iMaxY){
            $iMaxY=$this->iMaxY;
        }
        if($this->iMinY!=null){
            $iMinY=$this->iMinY;
        }
        
        if($this->paddingX ){
            $iMinX-=$this->paddingX;
            $iMaxX+=$this->paddingX;
        }
        if($this->paddingY ){
            $iMinY-=$this->paddingY;
            $iMaxY+=$this->paddingY;
        }
        
        $this->startScript();
        
        $iHeight=$this->iHeight-10;
        $iWidth=$this->iWidth-200-$this->iMarginLeft;
        
        if($this->gridY){
            $step=$this->gridY[0];
            $color=$this->gridY[1];
            
            for($y=$iMinY;$y<$iMaxY;$y+=$step){
                
                $y2=(1-($y-$iMinY)/($iMaxY-$iMinY))*$iHeight;
                $this->lineFromTo($this->iMarginLeft,$y2,$this->iWidth-200,$y2,$color,0.5   );
            }
            
        }
        
        if($this->tMarkerY){
            foreach($this->tMarkerY as $tLineY){
                
                list($y,$color)=$tLineY;
                $y=(1-($y-$iMinY)/($iMaxY-$iMinY))*$iHeight;
                
                $this->lineFromTo($this->iMarginLeft,$y,$this->iWidth-200,$y,$color,0.5 );
            }
        }
    
        foreach($this->tData as $sGroup => $tDetail){
            $lastX=null;
            $lastY=null;
            foreach($tDetail['tPoint'] as $j => $tPoint){
                
                list($x,$y)=$tPoint;
                
                $x2=(($x-$iMinX)/($iMaxX-$iMinX))*$iWidth+$this->iMarginLeft;
                $y2=(1-($y-$iMinY)/($iMaxY-$iMinY))*$iHeight;
                
                $x3=$x2-3;
                $y3=$y2-3;
                
                if($x3<=0){
                    $x3=0;
                }
                if($y3<=0){
                    $y3=0;
                }
                
                $this->rect($x3,$y3,6,6,$tDetail['color']);
                
                if($j>0){
                    $this->lineFromTo($lastX,$lastY,$x2,$y2,$tDetail['color']);
                    
                }
                
                $lastX=$x2;
                $lastY=$y2;
                
            }
        }
        
        //legend
        $i=0;
        if($this->tData){
            foreach($this->tData as $sGroup => $tDetail){
                $sLabel=$sGroup;
                
                $x=$this->legendX;
                $y=$i*20+$this->legendY;
                
                $this->rect($x,$y-8,10,10,$tDetail['color']);
                $this->text($x+16,$y,$sLabel,'#000',$this->textsizeLegend);
                
                $i++;
            }
        }
        
        $this->lineFromTo($this->iMarginLeft,0,$this->iMarginLeft,$this->iHeight-10);
        $this->lineFromTo($this->iMarginLeft,$this->iHeight-10,$this->iWidth-200,$this->iHeight-10);
        
        
        //step
        if($this->stepX !== null){
            for($x=($iMinX);$x<$iMaxX;$x+=$this->stepX){
                $x2=(($x-$iMinX)/($iMaxX-$iMinX))*$iWidth+$this->iMarginLeft;
                
                $this->lineFromTo($x2,($this->iHeight-10),$x2,($this->iHeight-5) );
                
                $this->text($x2+2,($this->iHeight),$x);
            }
        }else{
            $this->text(0,$this->iHeight,$iMinX);
        
            $this->text($this->iWidth-200,$this->iHeight,$iMaxX);
        }
        
        //step
        if($this->stepY !== null){
            for($y=($iMinY);$y<$iMaxY;$y+=$this->stepY){
                $y2=(1-($y-$iMinY)/($iMaxY-$iMinY))*$iHeight;
                
                $this->lineFromTo($this->iMarginLeft-5,$y2,$this->iMarginLeft,$y2 );
                
                $this->text(0,$y2,$y);
            }
        }else{
            $this->text(0,10,$iMaxY);
            $this->text(0,$this->iHeight-10 ,$iMinY);
        }
        
        
        $this->endScript();
        
        return $this->sHtml;
    }
    
    
    public function addGroup($sLabel,$sColor){
        $this->tmpGroup=$sLabel;
        
        $this->tData[$this->tmpGroup]['label']=$sLabel;
        $this->tData[$this->tmpGroup]['color']=$sColor;
    }
    public function addPoint($x,$y){
        $this->tData[$this->tmpGroup]['tPoint'][]=array($x,$y);
    }
    
}
class plugin_chartBar extends abstract_pluginChart{
    
    private $tmpGroup;
    
    
    
    
    public function show(){
        $this->loadCanvas();
        
        $iMaxX=0;
        $iMaxY=0;
        
        $iMinX='';
        $iMinY='';
        
        
        
        foreach($this->tData as $sGroup => $tDetail){
            foreach($tDetail['tPoint'] as $tPoint){
            
                list($x,$y)=$tPoint;
                
                if($iMaxX < $x){
                    $iMaxX=$x;
                }
                if($iMaxY < $y){
                    $iMaxY=$y;
                }
                
                if($iMinX=='' or $iMinX > $x){
                    $iMinX=$x;
                }
                if($iMinY=='' or $iMinY > $y){
                    $iMinY=$y;
                }
                
            }
        }
        
        
        if($this->iMaxX){
            $iMaxX=$this->iMaxX;
        }
        if($this->iMinX){
            $iMinX=$this->iMinX;
        }
        if($this->iMaxY){
            $iMaxY=$this->iMaxY;
        }
        if($this->iMinY!=null){
            $iMinY=$this->iMinY;
        }
        
        if($this->paddingX ){
            $iMinX-=$this->paddingX;
            $iMaxX+=$this->paddingX;
        }
        if($this->paddingY ){
            $iMinY-=$this->paddingY;
            $iMaxY+=$this->paddingY;
        }
        
        $this->startScript();
        
        $iHeight=$this->iHeight-10;
        $iWidth=$this->iWidth-200-$this->iMarginLeft-(4);
        
        if($this->gridY){
            $step=$this->gridY[0];
            $color=$this->gridY[1];
            
            for($y=$iMinY;$y<$iMaxY;$y+=$step){
                
                $y2=(1-($y-$iMinY)/($iMaxY-$iMinY))*$iHeight;
                $this->lineFromTo($this->iMarginLeft,$y2,$this->iWidth-200,$y2,$color,0.5   );
            }
            
        }
        
        if($this->tMarkerY){
            foreach($this->tMarkerY as $tLineY){
                
                list($y,$color)=$tLineY;
                $y=(1-($y-$iMinY)/($iMaxY-$iMinY))*$iHeight;
                
                $this->lineFromTo($this->iMarginLeft,$y,$this->iWidth-200,$y,$color,0.5 );
            }
        }
    
        $k=0;
        if($this->tData){
            foreach($this->tData as $sGroup => $tDetail){
                $lastX=null;
                $lastY=null;
                foreach($tDetail['tPoint'] as $tPoint){
                    
                    list($x,$y)=$tPoint;
                    
                    $x2=(($x-$iMinX)/($iMaxX-$iMinX))*$iWidth+$this->iMarginLeft;
                    $y2=(1-($y-$iMinY)/($iMaxY-$iMinY))*$iHeight;
                    
                    $x3=$x2;
                    $y3=$y2-3;
                    
                    if($x3<=0){
                        $x3=0;
                    }
                    if($y3<=0){
                        $y3=0;
                    }
                    
                    $this->rect($x3+($k*8),$y3,6,$iHeight-$y3,$tDetail['color']);
                    
                 
                    $lastX=$x2;
                    $lastY=$y2;
                    
                }
                $k++;
            }
        }
        
        //legend
        $i=0;
        foreach($this->tData as $sGroup => $tDetail){
            $sLabel=$sGroup;
            
            $x=$this->legendX;
            $y=$i*20+$this->legendY;
            
            $this->rect($x,$y-8,10,10,$tDetail['color']);
            $this->text($x+16,$y,$sLabel,'#000',$this->textsizeLegend);
            
            $i++;
        }
        
        $this->lineFromTo($this->iMarginLeft,0,$this->iMarginLeft,$this->iHeight-10);
        $this->lineFromTo($this->iMarginLeft,$this->iHeight-10,$this->iWidth-200,$this->iHeight-10);
        
        
        //step
        if($this->stepX !== null){
            for($x=($iMinX);$x<$iMaxX;$x+=$this->stepX){
                $x2=(($x-$iMinX)/($iMaxX-$iMinX))*$iWidth+$this->iMarginLeft;
                
                $this->lineFromTo($x2,($this->iHeight-10),$x2,($this->iHeight-5) );
                
                $this->text($x2+2,($this->iHeight),$x);
            }
        }else{
            $this->text(0,$this->iHeight,$iMinX);
        
            $this->text($this->iWidth-200,$this->iHeight,$iMaxX);
        }
        
        //step
        if($this->stepY !== null){
            for($y=($iMinY);$y<$iMaxY;$y+=$this->stepY){
                $y2=(1-($y-$iMinY)/($iMaxY-$iMinY))*$iHeight;
                
                $this->lineFromTo($this->iMarginLeft-5,$y2,$this->iMarginLeft,$y2 );
                
                $this->text(0,$y2,$y);
            }
        }else{
            $this->text(0,10,$iMaxY);
            $this->text(0,$this->iHeight-10 ,$iMinY);
        }
        
        
        $this->endScript();
        
        return $this->sHtml;
    }
    
    
    public function addGroup($sLabel,$sColor){
        $this->tmpGroup=$sLabel;
        
        $this->tData[$this->tmpGroup]['label']=$sLabel;
        $this->tData[$this->tmpGroup]['color']=$sColor;
    }
    public function addPoint($x,$y){
        $this->tData[$this->tmpGroup]['tPoint'][]=array($x,$y);
    }
    
}