jpgraph.php

本代码是为客户联系管理而做的系统

	$this->yaxis = new Axis($this->img,$this->yscale);
	$this->xgrid = new Grid($this->xaxis);
	$this->ygrid = new Grid($this->yaxis);	
	$this->ygrid->Show();			
    }
	
    // Specify secondary Y scale
    function SetY2Scale($aAxisType="lin",$aY2Min=1,$aY2Max=1) {
	if( $aAxisType=="lin" ) 
	    $this->y2scale = new LinearScale($aY2Min,$aY2Max);
	elseif( $aAxisType == "int" ) {
	    $this->y2scale = new LinearScale($aY2Min,$aY2Max);
	    $this->y2scale->SetIntScale();
	}
	elseif( $aAxisType=="log" ) {
	    $this->y2scale = new LogScale($aY2Min,$aY2Max);
	}
	else JpGraphError::Raise("JpGraph: Unsupported Y2 axis type: $axtype<br>");
			
	$this->y2scale->Init($this->img);	
	$this->y2axis = new Axis($this->img,$this->y2scale);
	$this->y2axis->scale->ticks->SetDirection(SIDE_LEFT); 
	$this->y2axis->SetLabelSide(SIDE_RIGHT); 
		
	// Deafult position is the max x-value
	$this->y2grid = new Grid($this->y2axis);							
    }
	
    // Specify density of ticks when autoscaling 'normal', 'dense', 'sparse', 'verysparse'
    // The dividing factor have been determined heuristically according to my aesthetic 
    // sense (or lack off) y.m.m.v !
    function SetTickDensity($aYDensity=TICKD_NORMAL,$aXDensity=TICKD_NORMAL) {
	$this->xtick_factor=30;
	$this->ytick_factor=25;		
	switch( $aYDensity ) {
	    case TICKD_DENSE:
		$this->ytick_factor=12;			
		break;
	    case TICKD_NORMAL:
		$this->ytick_factor=25;			
		break;
	    case TICKD_SPARSE:
		$this->ytick_factor=40;			
		break;
	    case TICKD_VERYSPARSE:
		$this->ytick_factor=100;			
		break;		
	    default:
		JpGraphError::Raise("JpGraph: Unsupported Tick density: $densy");
	}
	switch( $aXDensity ) {
	    case TICKD_DENSE:
		$this->xtick_factor=15;							
		break;
	    case TICKD_NORMAL:
		$this->xtick_factor=30;			
		break;
	    case TICKD_SPARSE:
		$this->xtick_factor=45;					
		break;
	    case TICKD_VERYSPARSE:
		$this->xtick_factor=60;								
		break;		
	    default:
		JpGraphError::Raise("JpGraph: Unsupported Tick density: $densx");
	}		
    }
	

    // Get a string of all image map areas	
    function GetCSIMareas() {
	if( !$this->iHasStroked )
	    $this->Stroke(_CSIM_SPECIALFILE);
	$csim=$this->legend->GetCSIMAreas();

	$n = count($this->plots);
	for( $i=0; $i<$n; ++$i ) 
	    $csim .= $this->plots[$i]->GetCSIMareas();

	$n = count($this->y2plots);
	for( $i=0; $i<$n; ++$i ) 
	    $csim .= $this->y2plots[$i]->GetCSIMareas();

	return $csim;
    }
	
    // Get a complete <MAP>..</MAP> tag for the final image map
    function GetHTMLImageMap($aMapName) {
	$im = "<MAP NAME=\"$aMapName\">\n";
	$im .= $this->GetCSIMareas();
	$im .= "</MAP>"; 
	return $im;
    }

    function CheckCSIMCache($aCacheName,$aTimeOut=60) {
	global $_SERVER;

	if( $aCacheName=='auto' )
	    $aCacheName=basename($_SERVER['PHP_SELF']);

	$this->csimcachename = CSIMCACHE_DIR.$aCacheName;
	$this->csimcachetimeout = $aTimeOut;

	// First determine if we need to check for a cached version
	// This differs from the standard cache in the sense that the
	// image and CSIM map HTML file is written relative to the directory
	// the script executes in and not the specified cache directory.
	// The reason for this is that the cache directory is not necessarily
	// accessible from the HTTP server.
	if( $this->csimcachename != '' ) {
	    $dir = dirname($this->csimcachename);
	    $base = basename($this->csimcachename);
	    $base = strtok($base,'.');
	    $suffix = strtok('.');
	    $basecsim = $dir.'/'.$base.'_csim_.html';
	    $baseimg = $dir.'/'.$base.'.'.$this->img->img_format;

	    $timedout=false;
		
	    // Does it exist at all ?
	    
	    if( file_exists($basecsim) && file_exists($baseimg) ) {
		// Check that it hasn't timed out
		$diff=time()-filemtime($basecsim);
		if( $this->csimcachetimeout>0 && ($diff > $this->csimcachetimeout*60) ) {
		    $timedout=true;
		    @unlink($basecsim);
		    @unlink($baseimg);
		}
		else {
		    if ($fh = @fopen($basecsim, "r")) {
			fpassthru($fh);
			exit();
		    }
		    else
			JpGraphError::Raise(" Can't open cached CSIM \"$basecsim\" for reading.");
		}
	    }
	}
	return false;
    }

    function StrokeCSIM($aScriptName='',$aCSIMName='',$aBorder=0) {
	GLOBAL $HTTP_GET_VARS;

	if( $aCSIMName=='' ) {
	    // create a random map name
	    $r = rand(0,100000);
	    $aCSIMName='__mapname'.$r.'__';
	}
	if( empty($HTTP_GET_VARS[_CSIM_DISPLAY]) ) {
	    // First determine if we need to check for a cached version
	    // This differs from the standard cache in the sense that the
	    // image and CSIM map HTML file is written relative to the directory
	    // the script executes in and not the specified cache directory.
	    // The reason for this is that the cache directory is not necessarily
	    // accessible from the HTTP server.
	    if( $this->csimcachename != '' ) {
		$dir = dirname($this->csimcachename);
		$base = basename($this->csimcachename);
		$base = strtok($base,'.');
		$suffix = strtok('.');
		$basecsim = $dir.'/'.$base.'_csim_.html';
		$baseimg = $base.'.'.$this->img->img_format;

		// Check that apache can write to directory specified

		if( file_exists($dir) && !is_writeable($dir) ) {
		    JpgraphError::Raise('Apache/PHP does not have permission to write to the CSIM cache directory ('.$dir.'). Check permissions.');
		}
		
		// Make sure directory exists
		$this->cache->MakeDirs($dir);

		// Write the image file
		$this->Stroke(CSIMCACHE_DIR.$baseimg);

		// Construct wrapper HTML and write to file and send it back to browser
		$htmlwrap = $this->GetHTMLImageMap($aCSIMName)."\n".
		    '<img src="'.CSIMCACHE_HTTP_DIR.$baseimg.'" ISMAP USEMAP="#'.$aCSIMName.'" border='.$aBorder.'>'."\n";
		if($fh =  @fopen($basecsim,'w') ) {
		    fwrite($fh,$htmlwrap);
		    fclose($fh);
		    echo $htmlwrap;
		}
		else
		    JpGraphError::Raise(" Can't write CSIM \"$basecsim\" for writing. Check free space and permissions.");
	    }
	    else {

		if( $aScriptName=='' ) {
		    JpGraphError::Raise('Missing script name in call to StrokeCSIM(). You must specify the name of the actual image script as the first parameter to StrokeCSIM().');
		    exit();
		}

		// Construct the HTML wrapper page
		// Get all user defined URL arguments
		reset($HTTP_GET_VARS);
		
		// This is a JPGRAPH internal defined that prevents
		// us from recursively coming here again
		$urlarg='?'._CSIM_DISPLAY.'=1';

		while( list($key,$value) = each($HTTP_GET_VARS) ) {
		    if( is_array($value) ) {
			$n = count($value);
			for( $i=0; $i < $n; ++$i ) {
			    $urlarg .= '&'.$key.'%5B%5D='.urlencode($value[$i]);
			}
		    }
		    else {
			$urlarg .= '&'.$key.'='.urlencode($value);
		    }
		}
		
		echo $this->GetHTMLImageMap($aCSIMName);

		echo "<img src='".$aScriptName.$urlarg."' ISMAP USEMAP='#".$aCSIMName."' border=$aBorder>";
	    }
	}
	else {
	    $this->Stroke();
	}
    }

    function GetTextsYMinMax() {
	$n = count($this->texts);
	$min=null;
	$max=null;
	for( $i=0; $i < $n; ++$i ) {
	    if( $this->texts[$i]->iScalePosY !== null && 
		$this->texts[$i]->iScalePosX !== null  ) {
		if( $min === null  ) {
		    $min = $max = $this->texts[$i]->iScalePosY ;
		}
		else {
		    $min = min($min,$this->texts[$i]->iScalePosY);
		    $max = max($max,$this->texts[$i]->iScalePosY);
		}
	    }
	}
	if( $min !== null ) {
	    return array($min,$max);
	}
	else
	    return null;
    }

    function GetTextsXMinMax() {
	$n = count($this->texts);
	$min=null;
	$max=null;
	for( $i=0; $i < $n; ++$i ) {
	    if( $this->texts[$i]->iScalePosY !== null && 
		$this->texts[$i]->iScalePosX !== null  ) {
		if( $min === null  ) {
		    $min = $max = $this->texts[$i]->iScalePosX ;
		}
		else {
		    $min = min($min,$this->texts[$i]->iScalePosX);
		    $max = max($max,$this->texts[$i]->iScalePosX);
		}
	    }
	}
	if( $min !== null ) {
	    return array($min,$max);
	}
	else
	    return null;
    }



    function GetXMinMax() {
	list($min,$ymin) = $this->plots[0]->Min();
	list($max,$ymax) = $this->plots[0]->Max();
	foreach( $this->plots as $p ) {
	    list($xmin,$ymin) = $p->Min();
	    list($xmax,$ymax) = $p->Max();			
	    $min = Min($xmin,$min);
	    $max = Max($xmax,$max);
	}
	if( $this->y2axis != null ) {
	    foreach( $this->y2plots as $p ) {
		list($xmin,$ymin) = $p->Min();
			list($xmax,$ymax) = $p->Max();			
			$min = Min($xmin,$min);
			$max = Max($xmax,$max);
	    }		    
	}
	return array($min,$max);
    }

    function AdjustMarginsForTitles() {
	$totrequired = 
	    ($this->title->t != '' ? 
	     $this->title->GetTextHeight($this->img) + $this->title->margin + 5 : 0 ) +
	    ($this->subtitle->t != '' ? 
	     $this->subtitle->GetTextHeight($this->img) + $this->subtitle->margin + 5 : 0 ) + 
	    ($this->subsubtitle->t != '' ? 
	     $this->subsubtitle->GetTextHeight($this->img) + $this->subsubtitle->margin + 5 : 0 ) ;
	

	$btotrequired = 0;
	if( !$this->xaxis->hide && !$this->xaxis->hide_labels ) {
	    // Minimum bottom margin
	    if( $this->xaxis->title->t != '' ) {
		if( $this->img->a == 90 ) 
		    $btotrequired = $this->yaxis->title->GetTextHeight($this->img) + 5 ;
		else
		    $btotrequired = $this->xaxis->title->GetTextHeight($this->img) + 5 ;
	    }
	    else
		$btotrequired = 0;
	    
	    if( $this->img->a == 90 ) {
		$this->img->SetFont($this->yaxis->font_family,$this->yaxis->font_style,
				    $this->yaxis->font_size);
		$lh = $this->img->GetTextHeight('Mg',$this->yaxis->label_angle);
	    }
	    else {
		$this->img->SetFont($this->xaxis->font_family,$this->xaxis->font_style,
				    $this->xaxis->font_size);
		$lh = $this->img->GetTextHeight('Mg',$this->xaxis->label_angle);
	    }
	    
	    $btotrequired += $lh + 5;
	}

	if( $this->img->a == 90 ) {
	    // DO Nothing. It gets too messy to do this properly for 90 deg...
	}
	else{
	    if( $this->img->top_margin < $totrequired ) {
		$this->SetMargin($this->img->left_margin,$this->img->right_margin,
				 $totrequired,$this->img->bottom_margin);
	    }
	    if( $this->img->bottom_margin < $btotrequired ) {
		$this->SetMargin($this->img->left_margin,$this->img->right_margin,
				 $this->img->top_margin,$btotrequired);
	    }
	}
    }

    // Stroke the graph
    // $aStrokeFileName	If != "" the image will be written to this file and NOT
    // streamed back to the browser
    function Stroke($aStrokeFileName="") {		

	// Start by adjusting the margin so that potential titles will fit.
	$this->AdjustMarginsForTitles();

	// 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;

	// Do any pre-stroke adjustment that is needed by the different plot types
	// (i.e bar plots want's to add an offset to the x-labels etc)
	for($i=0; $i<count($this->plots) ; ++$i ) {
	    $this->plots[$i]->PreStrokeAdjust($this);
	    $this->plots[$i]->DoLegend($this);
	}
		
	// Any plots on the second Y scale?
	if( $this->y2scale != null ) {
	    for($i=0; $i<count($this->y2plots)	; ++$i ) {
		$this->y2plots[$i]->PreStrokeAdjust($this);
		$this->y2plots[$i]->DoLegend($this);
	    }
	}
		
	// Bail out if any of the Y-axis not been specified and
	// has no plots. (This means it is impossible to do autoscaling and
	// no other scale was given so we can't possible draw anything). If you use manual
	// scaling you also have to supply the tick steps as well.
	if( (!$this->yscale->IsSpecified() && count($this->plots)==0) ||
	    ($this->y2scale!=null && !$this->y2scale->IsSpecified() && count($this->y2plots)==0) ) {
	    $e = "Can't draw unspecified Y-scale.<br>\nYou have either:<br>\n";
	    $e .= "1. Specified an Y axis for autoscaling but have not supplied any plots<br>\n";
	    $e .= "2. Specified a scale manually but have forgot to specify the tick steps";
	    JpGraphError::Raise($e);
	}
		
	// Bail out if no plots and no specified X-scale
	if( (!$this->xscale->IsSpecified() && count($this->plots)==0 && count($this->y2plots)==0) )
	    JpGraphError::Raise("<strong>JpGraph: Can't draw unspecified X-scale.</strong><br>No plots.<br>");

	//Check if we should autoscale y-axis
	if( !$this->yscale->IsSpecified() && count($this->plots)>0 ) {
	    list($min,$max) = $this->GetPlotsYMinMax($this->plots);
 	    $lres = $this->GetLinesYMinMax($this->lines);
	    if( $lres ) {
		list($linmin,$linmax) = $lres ;
		$min = min($min,$linmin);
		$max = max($max,$linmax);
	    }
	    $tres = $this->GetTextsYMinMax();