jpgraph.php

最近在做软交换时研究的一个软交换的东东

	$this->subtitle->SetAlign('center');

	$this->subsubtitle = new Text();
	$this->subsubtitle->ParagraphAlign('center');
	$this->subsubtitle->SetMargin(2);
	$this->subsubtitle->SetAlign('center');

	$this->legend = new Legend();
	$this->footer = new Footer();

	// If the cached version exist just read it directly from the
	// cache, stream it back to browser and exit
	if( $aCachedName!="" && READ_CACHE && $aInline )
	    if( $this->cache->GetAndStream($aCachedName) ) {
		exit();
	    }
				
	$this->cache_name = $aCachedName;
	$this->SetTickDensity(); // Normal density

	$this->tabtitle = new GraphTabTitle();
    }
//---------------
// PUBLIC METHODS	
    
    // Enable final image perspective transformation
    function Set3DPerspective($aDir=1,$aHorizon=100,$aSkewDist=120,$aQuality=false,$aFillColor='#FFFFFF',$aBorder=false,$aMinSize=true,$aHorizonPos=0.5) {
	$this->iImgTrans = true;
	$this->iImgTransHorizon = $aHorizon;
	$this->iImgTransSkewDist= $aSkewDist;
	$this->iImgTransDirection = $aDir;
	$this->iImgTransMinSize = $aMinSize;
	$this->iImgTransFillColor=$aFillColor;
	$this->iImgTransHighQ=$aQuality;
	$this->iImgTransBorder=$aBorder;
	$this->iImgTransHorizonPos=$aHorizonPos;
    }



    // Should the grid be in front or back of the plot?
    function SetGridDepth($aDepth) {
	$this->grid_depth=$aDepth;
    }
	
    // Specify graph angle 0-360 degrees.
    function SetAngle($aAngle) {
	$this->img->SetAngle($aAngle);
    }

    function SetAlphaBlending($aFlg=true) {
	$this->img->SetAlphaBlending($aFlg);
    }

    // Shortcut to image margin
    function SetMargin($lm,$rm,$tm,$bm) {
	$this->img->SetMargin($lm,$rm,$tm,$bm);
    }

    function SetY2OrderBack($aBack=true) {
	$this->y2orderback = $aBack;
    }

    // Rotate the graph 90 degrees and set the margin 
    // when we have done a 90 degree rotation
    function Set90AndMargin($lm=0,$rm=0,$tm=0,$bm=0) {
	$lm = $lm ==0 ? floor(0.2 * $this->img->width)  : $lm ;
	$rm = $rm ==0 ? floor(0.1 * $this->img->width)  : $rm ;
	$tm = $tm ==0 ? floor(0.2 * $this->img->height) : $tm ;
	$bm = $bm ==0 ? floor(0.1 * $this->img->height) : $bm ;

	$adj = ($this->img->height - $this->img->width)/2;
	$this->img->SetMargin($tm-$adj,$bm-$adj,$rm+$adj,$lm+$adj);
	$this->img->SetCenter(floor($this->img->width/2),floor($this->img->height/2));
	$this->SetAngle(90);
	if( empty($this->yaxis) || empty($this->xaxis) ) {
	    JpgraphError::Raise('You must specify what scale to use with a call to Graph::SetScale()');
	}
	$this->xaxis->SetLabelAlign('right','center');
	$this->yaxis->SetLabelAlign('center','bottom');
    }
	
    function SetClipping($aFlg=true) {
	$this->iDoClipping = $aFlg ;
    }

    // Add a plot object to the graph
    function Add(&$aPlot) {
	if( $aPlot == null )
	    JpGraphError::Raise("Graph::Add() You tried to add a null plot to the graph.");
	if( is_array($aPlot) && count($aPlot) > 0 )
	    $cl = strtolower(get_class($aPlot[0]));
	else
	    $cl = strtolower(get_class($aPlot));

	if( $cl == 'text' ) 
	    $this->AddText($aPlot);
	elseif( $cl == 'plotline' )
	    $this->AddLine($aPlot);
	elseif( $cl == 'plotband' )
	    $this->AddBand($aPlot);
	elseif( $cl == 'iconplot' )
	    $this->AddIcon($aPlot);
	else
	    $this->plots[] = &$aPlot;
    }

    function AddIcon(&$aIcon) {
	if( is_array($aIcon) ) {
	    for($i=0; $i < count($aIcon); ++$i )
		$this->iIcons[]=&$aIcon[$i];
	}
	else {
	    $this->iIcons[] = $aIcon ;
	}	
    }

    // Add plot to second Y-scale
    function AddY2(&$aPlot) {
	if( $aPlot == null )
	    JpGraphError::Raise("Graph::AddY2() You tried to add a null plot to the graph.");	

	if( is_array($aPlot) && count($aPlot) > 0 )
	    $cl = strtolower(get_class($aPlot[0]));
	else
	    $cl = strtolower(get_class($aPlot));

	if( $cl == 'text' ) 
	    $this->AddText($aPlot,true);
	elseif( $cl == 'plotline' )
	    $this->AddLine($aPlot,true);
	elseif( $cl == 'plotband' )
	    $this->AddBand($aPlot,true);
	else
	    $this->y2plots[] = &$aPlot;
    }
	
    // Add text object to the graph
    function AddText(&$aTxt,$aToY2=false) {
	if( $aTxt == null )
	    JpGraphError::Raise("Graph::AddText() You tried to add a null text to the graph.");		
	if( $aToY2 ) {
	    if( is_array($aTxt) ) {
		for($i=0; $i < count($aTxt); ++$i )
		    $this->y2texts[]=&$aTxt[$i];
	    }
	    else
		$this->y2texts[] = &$aTxt;
	}
	else {
	    if( is_array($aTxt) ) {
		for($i=0; $i < count($aTxt); ++$i )
		    $this->texts[]=&$aTxt[$i];
	    }
	    else
		$this->texts[] = &$aTxt;
	}
    }
	
    // Add a line object (class PlotLine) to the graph
    function AddLine(&$aLine,$aToY2=false) {
	if( $aLine == null )
	    JpGraphError::Raise("Graph::AddLine() You tried to add a null line to the graph.");	

	if( $aToY2 ) {
 	    if( is_array($aLine) ) {
		for($i=0; $i < count($aLine); ++$i )
		    $this->y2lines[]=&$aLine[$i];
	    }
	    else
		$this->y2lines[] = &$aLine;
	}
	else {
 	    if( is_array($aLine) ) {
		for($i=0; $i < count($aLine); ++$i )
		    $this->lines[]=&$aLine[$i];
	    }
	    else
		$this->lines[] = &$aLine;
	}
    }

    // Add vertical or horizontal band
    function AddBand(&$aBand,$aToY2=false) {
	if( $aBand == null )
	    JpGraphError::Raise(" Graph::AddBand() You tried to add a null band to the graph.");

	if( $aToY2 ) {
	    if( is_array($aBand) ) {
		for($i=0; $i < count($aBand); ++$i )
		    $this->y2bands[] = &$aBand[$i];
	    }
	    else
		$this->y2bands[] = &$aBand;
	}
	else {
	    if( is_array($aBand) ) {
		for($i=0; $i < count($aBand); ++$i )
		    $this->bands[] = &$aBand[$i];
	    }
	    else
		$this->bands[] = &$aBand;
	}
    }

    function SetBackgroundGradient($aFrom='navy',$aTo='silver',$aGradType=2,$aStyle=BGRAD_FRAME) {
	$this->bkg_gradtype=$aGradType;
	$this->bkg_gradstyle=$aStyle;
	$this->bkg_gradfrom = $aFrom;
	$this->bkg_gradto = $aTo;
    } 
	
    // Set a country flag in the background
    function SetBackgroundCFlag($aName,$aBgType=BGIMG_FILLPLOT,$aMix=100) {
	$this->background_cflag = $aName;
	$this->background_cflag_type = $aBgType;
	$this->background_cflag_mix = $aMix;
    }

    // Alias for the above method
    function SetBackgroundCountryFlag($aName,$aBgType=BGIMG_FILLPLOT,$aMix=100) {
	$this->background_cflag = $aName;
	$this->background_cflag_type = $aBgType;
	$this->background_cflag_mix = $aMix;
    }


    // Specify a background image
    function SetBackgroundImage($aFileName,$aBgType=BGIMG_FILLPLOT,$aImgFormat="auto") {

	if( $GLOBALS['gd2'] && !USE_TRUECOLOR ) {
	    JpGraphError::Raise("You are using GD 2.x and are trying to use a background images on a non truecolor image. To use background images with GD 2.x you <b>must</b> enable truecolor by setting the USE_TRUECOLOR constant to TRUE. Due to a bug in GD 2.0.1 using any truetype fonts with truecolor images will result in very poor quality fonts.");
	}

	// Get extension to determine image type
	if( $aImgFormat == "auto" ) {
	    $e = explode('.',$aFileName);
	    if( !$e ) {
		JpGraphError::Raise('Incorrect file name for Graph::SetBackgroundImage() : '.$aFileName.' Must have a valid image extension (jpg,gif,png) when using autodetection of image type');
	    }

	    $valid_formats = array('png', 'jpg', 'gif');
	    $aImgFormat = strtolower($e[count($e)-1]);
	    if ($aImgFormat == 'jpeg')  {
		$aImgFormat = 'jpg';
	    }
	    elseif (!in_array($aImgFormat, $valid_formats) )  {
		JpGraphError::Raise('Unknown file extension ($aImgFormat) in Graph::SetBackgroundImage() for filename: '.$aFileName);
	    }    
	}

	$this->background_image = $aFileName;
	$this->background_image_type=$aBgType;
	$this->background_image_format=$aImgFormat;
    }

    function SetBackgroundImageMix($aMix) {
	$this->background_image_mix = $aMix ;
    }
	
    // Adjust brightness and constrast for background image
    function AdjBackgroundImage($aBright,$aContr=0,$aSat=0) {
	$this->background_image_bright=$aBright;
	$this->background_image_contr=$aContr;
	$this->background_image_sat=$aSat;
    }
	
    // Adjust brightness and constrast for image
    function AdjImage($aBright,$aContr=0,$aSat=0) {
	$this->image_bright=$aBright;
	$this->image_contr=$aContr;
	$this->image_sat=$aSat;
    }

    // Specify axis style (boxed or single)
    function SetAxisStyle($aStyle) {
        $this->iAxisStyle = $aStyle ;
    }
	
    // Set a frame around the plot area
    function SetBox($aDrawPlotFrame=true,$aPlotFrameColor=array(0,0,0),$aPlotFrameWeight=1) {
	$this->boxed = $aDrawPlotFrame;
	$this->box_weight = $aPlotFrameWeight;
	$this->box_color = $aPlotFrameColor;
    }
	
    // Specify color for the plotarea (not the margins)
    function SetColor($aColor) {
	$this->plotarea_color=$aColor;
    }
	
    // Specify color for the margins (all areas outside the plotarea)
    function SetMarginColor($aColor) {
	$this->margin_color=$aColor;
    }
	
    // Set a frame around the entire image
    function SetFrame($aDrawImgFrame=true,$aImgFrameColor=array(0,0,0),$aImgFrameWeight=1) {
	$this->doframe = $aDrawImgFrame;
	$this->frame_color = $aImgFrameColor;
	$this->frame_weight = $aImgFrameWeight;
    }

    function SetFrameBevel($aDepth=3,$aBorder=false,$aBorderColor='black',$aColor1='white@0.4',$aColor2='darkgray@0.4',$aFlg=true) {
	$this->framebevel = $aFlg ;
	$this->framebeveldepth = $aDepth ;
	$this->framebevelborder = $aBorder ;
	$this->framebevelbordercolor = $aBorderColor ;
	$this->framebevelcolor1 = $aColor1 ;
	$this->framebevelcolor2 = $aColor2 ;

	$this->doshadow = false ;
    }

    // Set the shadow around the whole image
    function SetShadow($aShowShadow=true,$aShadowWidth=5,$aShadowColor=array(102,102,102)) {
	$this->doshadow = $aShowShadow;
	$this->shadow_color = $aShadowColor;
	$this->shadow_width = $aShadowWidth;
	$this->footer->iBottomMargin += $aShadowWidth;
	$this->footer->iRightMargin += $aShadowWidth;
    }

    // Specify x,y scale. Note that if you manually specify the scale
    // you must also specify the tick distance with a call to Ticks::Set()
    function SetScale($aAxisType,$aYMin=1,$aYMax=1,$aXMin=1,$aXMax=1) {
	$this->axtype = $aAxisType;

	if( $aYMax < $aYMin || $aXMax < $aXMin )
	    JpGraphError::Raise('Graph::SetScale(): Specified Max value must be larger than the specified Min value.');

	$yt=substr($aAxisType,-3,3);
	if( $yt=="lin" )
	    $this->yscale = new LinearScale($aYMin,$aYMax);
	elseif( $yt == "int" ) {
	    $this->yscale = new LinearScale($aYMin,$aYMax);
	    $this->yscale->SetIntScale();
	}
	elseif( $yt=="log" )
	    $this->yscale = new LogScale($aYMin,$aYMax);
	else
	    JpGraphError::Raise("Unknown scale specification for Y-scale. ($aAxisType)");
			
	$xt=substr($aAxisType,0,3);
	if( $xt == "lin" || $xt == "tex" ) {
	    $this->xscale = new LinearScale($aXMin,$aXMax,"x");
	    $this->xscale->textscale = ($xt == "tex");
	}
	elseif( $xt == "int" ) {
	    $this->xscale = new LinearScale($aXMin,$aXMax,"x");
	    $this->xscale->SetIntScale();
	}
	elseif( $xt == "log" )
	    $this->xscale = new LogScale($aXMin,$aXMax,"x");
	else
	    JpGraphError::Raise(" Unknown scale specification for X-scale. ($aAxisType)");

	$this->xaxis = new Axis($this->img,$this->xscale);
	$this->yaxis = new Axis($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: $aAxisType\nMust be one of (lin,log,int)");
			
	$this->y2axis = new Axis($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");
	}		
    }