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git-svn-id: http://www.observium.org/svn/observer/trunk@2447 61d68cd4-352d-0410-923a-c4978735b2b8
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		@@ -1,95 +0,0 @@
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<?php
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/*=======================================================================
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// File: 	JPGRAPH_CANVAS.PHP
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// Description:	Canvas drawing extension for JpGraph
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// Created: 	2001-01-08
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// Ver:		$Id: jpgraph_canvas.php 781 2006-10-08 08:07:47Z ljp $
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//
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// Copyright (c) Aditus Consulting. All rights reserved.
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//========================================================================
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*/
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//===================================================
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// CLASS CanvasGraph
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// Description: Creates a simple canvas graph which
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// might be used together with the basic Image drawing
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// primitives. Useful to auickoly produce some arbitrary
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// graphic which benefits from all the functionality in the
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// graph liek caching for example. 
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//===================================================
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class CanvasGraph extends Graph {
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//---------------
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// CONSTRUCTOR
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    function CanvasGraph($aWidth=300,$aHeight=200,$aCachedName="",$timeout=0,$inline=1) {
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	$this->Graph($aWidth,$aHeight,$aCachedName,$timeout,$inline);
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    }
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//---------------
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// PUBLIC METHODS	
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    function InitFrame() {
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	$this->StrokePlotArea();
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    }
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    // Method description
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    function Stroke($aStrokeFileName="") {
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	if( $this->texts != null ) {
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	    for($i=0; $i < count($this->texts); ++$i) {
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		$this->texts[$i]->Stroke($this->img);
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	    }
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	}		
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	if( $this->iTables !== null ) {
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	    for($i=0; $i < count($this->iTables); ++$i) {
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		$this->iTables[$i]->Stroke($this->img);
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	    }   
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	}
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	$this->StrokeTitles();
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	// If the filename is the predefined value = '_csim_special_'
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	// we assume that the call to stroke only needs to do enough
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	// to correctly generate the CSIM maps.
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	// We use this variable to skip things we don't strictly need
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	// to do to generate the image map to improve performance
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	// a best we can. Therefor you will see a lot of tests !$_csim in the
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	// code below.
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	$_csim = ($aStrokeFileName===_CSIM_SPECIALFILE);
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	// We need to know if we have stroked the plot in the
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	// GetCSIMareas. Otherwise the CSIM hasn't been generated
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	// and in the case of GetCSIM called before stroke to generate
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	// CSIM without storing an image to disk GetCSIM must call Stroke.
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	$this->iHasStroked = true;
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	if( !$_csim ) {
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	    // Should we do any final image transformation
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	    if( $this->iImgTrans ) {
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		if( !class_exists('ImgTrans') ) {
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		    require_once('jpgraph_imgtrans.php');
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		}
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		$tform = new ImgTrans($this->img->img);
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		$this->img->img = $tform->Skew3D($this->iImgTransHorizon,$this->iImgTransSkewDist,
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						 $this->iImgTransDirection,$this->iImgTransHighQ,
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						 $this->iImgTransMinSize,$this->iImgTransFillColor,
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						 $this->iImgTransBorder);
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	    }
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	    // If the filename is given as the special _IMG_HANDLER
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	    // then the image handler is returned and the image is NOT
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	    // streamed back
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	    if( $aStrokeFileName == _IMG_HANDLER ) {
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		return $this->img->img;
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	    }
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	    else {
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		// Finally stream the generated picture					
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		$this->cache->PutAndStream($this->img,$this->cache_name,$this->inline,$aStrokeFileName);
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		return true;
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	    }
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	}
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    }
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} // Class
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/* EOF */
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?>
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