jpgraph_pie.php

通达OA2007SE源代码 非常好的

	    $r += $img->GetFontHeight()/1.5;

	    $xt=round($r*cos($a)+$xc);
	    $yt=round($yc-$r*sin($a));

	    // Normalize angle
	    while( $a < 0 ) $a += 2*M_PI;
	    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 {
    private $imidsize=0.5;		// Fraction of total width
    private $imidcolor='white';
    public $midtitle='';
    private $middlecsimtarget="",$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;

	// Special case when we have only one slice since then both start and end
	// angle will be == 0
	if( abs($sa - $ea) < 0.0001 ) {
	    $sa=2*M_PI; $ea=0;
	}

	// 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;

	// If we cross the 360-limit with a slice we need to handle
	// the fact that end angle is smaller than start
	if( $sa < $ea ) {
	    while ($a <= 2*M_PI) {
		$xp = floor($radius*cos($a)+$xc);
		$yp = floor($yc-$radius*sin($a));
		$coords.= ", $xp, $yp";
		$a += 0.25;
	    }
	    $a -= 2*M_PI;
	}

	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]);
		$this->csimareas .= " title=\"$tmp\"";
	    }
	    $this->csimareas .= " alt=\"$tmp\" />\n";
	}
    }


    function Stroke($img,$aaoption=0) {

	// Stroke the pie but don't stroke values
	$tmp =  $this->value->show;
	$this->value->show = false;
	parent::Stroke($img,$aaoption);
	$this->value->show = $tmp;

 	$xc = round($this->posx*$img->width);
	$yc = round($this->posy*$img->height);

	$radius = floor($this->radius * min($img->width,$img->height)) ;


	if( $this->imidsize > 0 && $aaoption !== 2 ) {

	    if( $this->ishadowcolor != "" ) {
		$img->SetColor($this->ishadowcolor);
		$img->FilledCircle($xc+$this->ishadowdrop,$yc+$this->ishadowdrop,
				   round($radius*$this->imidsize));
	    }

	    $img->SetColor($this->imidcolor);
	    $img->FilledCircle($xc,$yc,round($radius*$this->imidsize));

	    if(  $this->pie_border && $aaoption === 0 ) {
		$img->SetColor($this->color);
		$img->Circle($xc,$yc,round($radius*$this->imidsize));
	    }

	    if( !empty($this->middlecsimtarget) )
		$this->AddMiddleCSIM($xc,$yc,round($radius*$this->imidsize));

	}

	if( $this->value->show && $aaoption !== 1) {
	    $this->StrokeAllLabels($img,$xc,$yc,$radius);
	    $this->midtitle->SetPos($xc,$yc,'center','center');
	    $this->midtitle->Stroke($img);
	}

    }

    function AddMiddleCSIM($xc,$yc,$r) {
	$xc=round($xc);$yc=round($yc);$r=round($r);
	$this->csimareas .= "<area shape=\"circle\" coords=\"$xc,$yc,$r\" href=\"".
	    $this->middlecsimtarget."\"";
	if( !empty($this->middlecsimalt) ) {
	    $tmp = $this->middlecsimalt;
	    $this->csimareas .= " title=\"$tmp\"";
	}
	$this->csimareas .= " alt=\"$tmp\" />\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 {
    private $posx, $posy, $radius;		
    private $legends=array();	
    public $plots=array();
    public $pieaa = false ;
//---------------
// CONSTRUCTOR
    function PieGraph($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($aObj) {

	if( is_array($aObj) && count($aObj) > 0 )
	    $cl = $aObj[0];
	else
	    $cl = $aObj;

	if( $cl instanceof Text ) 
	    $this->AddText($aObj);
	elseif( class_exists('IconPlot',false) && ($cl instanceof IconPlot) ) 
	    $this->AddIcon($aObj);
	else {
	    if( is_array($aObj) ) {
		$n = count($aObj);
		for($i=0; $i < $n; ++$i ) {
		    $this->plots[] = $aObj[$i];
		}
	    }
	    else {
		$this->plots[] = $aObj;
	    }
	}
    }

    function SetAntiAliasing($aFlg=true) {
	$this->pieaa = $aFlg;
    }
	
    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);
		$n = count($coords[0]);
		for ($i=0; $i < $n; $i++) {
		    if ($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]);
			$m = count($pts[0]);
			for ($j=0; $j < $m; $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;

	$n = count($this->plots);

	if( $this->pieaa ) {

	    if( !$_csim ) {
		if( $this->background_image != "" ) {
		    $this->StrokeFrameBackground();		
		}
		else {
		    $this->StrokeFrame();		
		    $this->StrokeBackgroundGrad();
		}
	    }


	    $w = $this->img->width;
	    $h = $this->img->height;
	    $oldimg = $this->img->img;

	    $this->img->CreateImgCanvas(2*$w,2*$h);
	    
	    $this->img->SetColor( $this->margin_color );
	    $this->img->FilledRectangle(0,0,2*$w-1,2*$h-1);

	    // Make all icons *2 i size since we will be scaling down the
	    // imahe to do the anti aliasing
	    $ni = count($this->iIcons);
	    for($i=0; $i < $ni; ++$i) {
		$this->iIcons[$i]->iScale *= 2 ;
		if( $this->iIcons[$i]->iX > 1 ) 
		    $this->iIcons[$i]->iX *= 2 ;
		if( $this->iIcons[$i]->iY > 1 ) 
		    $this->iIcons[$i]->iY *= 2 ;
	    }

	    $this->StrokeIcons();

	    for($i=0; $i < $n; ++$i) {
		if( $this->plots[$i]->posx > 1 ) 
		    $this->plots[$i]->posx *= 2 ;
		if( $this->plots[$i]->posy > 1 ) 
		    $this->plots[$i]->posy *= 2 ;

		$this->plots[$i]->Stroke($this->img,1);

		if( $this->plots[$i]->posx > 1 ) 
		    $this->plots[$i]->posx /= 2 ;
		if( $this->plots[$i]->posy > 1 ) 
		    $this->plots[$i]->posy /= 2 ;
	    }

	    $indent = $this->doframe ? ($this->frame_weight + ($this->doshadow ? $this->shadow_width : 0 )) : 0 ;
	    $indent += $this->framebevel ? $this->framebeveldepth + 1 : 0 ;
	    $this->img->CopyCanvasH($oldimg,$this->img->img,$indent,$indent,$indent,$indent,
				    $w-2*$indent,$h-2*$indent,2*($w-$indent),2*($h-$indent));

	    $this->img->img = $oldimg ;
	    $this->img->width = $w ;
	    $this->img->height = $h ;

	    for($i=0; $i < $n; ++$i) {
		$this->plots[$i]->Stroke($this->img,2); // Stroke labels
		$this->plots[$i]->Legend($this);
	    }

	}
	else {

	    if( !$_csim ) {
		if( $this->background_image != "" ) {
		    $this->StrokeFrameBackground();		
		}
		else {
		    $this->StrokeFrame();		
		}
	    }

	    $this->StrokeIcons();

	    for($i=0; $i < $n; ++$i) {
		$this->plots[$i]->Stroke($this->img);
		$this->plots[$i]->Legend($this);
	    }
	}

	$this->legend->Stroke($this->img);
	$this->footer->Stroke($this->img);
	$this->StrokeTitles();

	if( !$_csim ) {	

	    // Stroke texts
	    if( $this->texts != null ) {
		$n = count($this->texts);
		for($i=0; $i < $n; ++$i ) {
		    $this->texts[$i]->Stroke($this->img);
		}
	    }

	    if( _JPG_DEBUG ) {
		$this->DisplayCSIMAreas();
	    }

	    // Should we do any final image transformation
	    if( $this->iImgTrans ) {
		if( !class_exists('ImgTrans',false) ) {
		    require_once('jpgraph_imgtrans.php');
		    //JpGraphError::Raise('In order to use image transformation you must include the file jpgraph_imgtrans.php in your script.');
		}
	       
		$tform = new ImgTrans($this->img->img);
		$this->img->img = $tform->Skew3D($this->iImgTransHorizon,$this->iImgTransSkewDist,
						 $this->iImgTransDirection,$this->iImgTransHighQ,
						 $this->iImgTransMinSize,$this->iImgTransFillColor,
						 $this->iImgTransBorder);
	    }


	    // 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 */
?>