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<?php

//=======================================================================

// File:	JPGRAPH_ICONPLOT.PHP

// Description:	PHP4 Graph Plotting library. Extension module.

// Created: 	2004-02-18

// Ver:		$Id: jpgraph_iconplot.php 838 2007-01-22 21:01:22Z ljp $

//

// Copyright (c) Aditus Consulting. All rights reserved.

//========================================================================

//===================================================

// CLASS IconPlot

// Description: Make it possible to add a (small) image

// to the graph

//===================================================

class IconPlot {

    var $iHorAnchor='left',$iVertAnchor='top';

    var $iX=0,$iY=0;

    var $iFile='';

    var $iScale=1.0,$iMix=100;

    var $iAnchors = array('left','right','top','bottom','center');

    var $iCountryFlag='',$iCountryStdSize=3;

    var $iScalePosY=null,$iScalePosX=null;

    var $iImgString='';

    function IconPlot($aFile="",$aX=0,$aY=0,$aScale=1.0,$aMix=100) {

	$this->iFile = $aFile;

	$this->iX=$aX;

	$this->iY=$aY;

	$this->iScale= $aScale;

	if( $aMix < 0 || $aMix > 100 ) {

	    JpGraphError::RaiseL(8001); //('Mix value for icon must be between 0 and 100.');

	}

	$this->iMix = $aMix ;

    }

    function CreateFromString($aStr) {

	$this->iImgString = $aStr;

    }

    function SetCountryFlag($aFlag,$aX=0,$aY=0,$aScale=1.0,$aMix=100,$aStdSize=3) {

	$this->iCountryFlag = $aFlag;

	$this->iX=$aX;

	$this->iY=$aY;

	$this->iScale= $aScale;

	if( $aMix < 0 || $aMix > 100 ) {

	    JpGraphError::RaiseL(8001);//'Mix value for icon must be between 0 and 100.');

	}

	$this->iMix = $aMix;

	$this->iCountryStdSize = $aStdSize;

    }

    function SetPos($aX,$aY) {

	$this->iX=$aX;

	$this->iY=$aY;

    }

    function SetScalePos($aX,$aY) {

	$this->iScalePosX = $aX;

	$this->iScalePosY = $aY;

    }

    function SetScale($aScale) {

	$this->iScale = $aScale;

    }

    function SetMix($aMix) {

	if( $aMix < 0 || $aMix > 100 ) {

	    JpGraphError::RaiseL(8001);//('Mix value for icon must be between 0 and 100.');

	}

	$this->iMix = $aMix ;

    }

    function SetAnchor($aXAnchor='left',$aYAnchor='center') {

	if( !in_array($aXAnchor,$this->iAnchors) ||

	    !in_array($aYAnchor,$this->iAnchors) ) {

	    JpGraphError::RaiseL(8002);//("Anchor position for icons must be one of 'top', 'bottom', 'left', 'right' or 'center'");

	}

	$this->iHorAnchor=$aXAnchor;

	$this->iVertAnchor=$aYAnchor;

    }

    function PreStrokeAdjust($aGraph) {

	// Nothing to do ...

    }

    function DoLegend($aGraph) {

	// Nothing to do ...

    }

    function Max() {

	return array(false,false);

    }

    // The next four function are framework function tht gets called

    // from Gantt and is not menaiungfull in the context of Icons but

    // they must be implemented to avoid errors.

    function GetMaxDate() { return false;   }

    function GetMinDate() { return false;   }

    function GetLineNbr() { return 0;   }

    function GetAbsHeight() {return 0;  }

    function Min() {

	return array(false,false);

    }

    function StrokeMargin(&$aImg) {

	return true;

    }

    function Stroke(&$aImg,&$axscale,&$ayscale) {

	$this->StrokeWithScale($aImg,$axscale,$ayscale);

    }

    function StrokeWithScale(&$aImg,&$axscale,&$ayscale) {

	if( $this->iScalePosX === null ||

	    $this->iScalePosY === null ) {

	    $this->_Stroke($aImg);

	}

	else {

	    $this->_Stroke($aImg,

			  round($axscale->Translate($this->iScalePosX)),

			  round($ayscale->Translate($this->iScalePosY)));

	}

    }

    function GetWidthHeight() {

	$dummy=0;

	return $this->_Stroke($dummy,null,null,true);

    }

    function _Stroke(&$aImg,$x=null,$y=null,$aReturnWidthHeight=false) {

	if( $this->iFile != '' && $this->iCountryFlag != '' ) {

	    JpGraphError::RaiseL(8003);//('It is not possible to specify both an image file and a country flag for the same icon.');

	}

	if( $this->iFile != '' ) {

	    $gdimg = Graph::LoadBkgImage('',$this->iFile);

	}

	elseif( $this->iImgString != '') {

	    $gdimg = Image::CreateFromString($this->iImgString);

	}

	else {

	    if( ! class_exists('FlagImages') ) {

		JpGraphError::RaiseL(8004);//('In order to use Country flags as icons you must include the "jpgraph_flags.php" file.');

	    }

	    $fobj = new FlagImages($this->iCountryStdSize);

	    $dummy='';

	    $gdimg = $fobj->GetImgByName($this->iCountryFlag,$dummy);

	}

	$iconw = imagesx($gdimg);

	$iconh = imagesy($gdimg);

	if( $aReturnWidthHeight ) {

	    return array(round($iconw*$this->iScale),round($iconh*$this->iScale));

	}

	if( $x !== null && $y !== null ) {

	    $this->iX = $x; $this->iY = $y;

	}

	if( $this->iX >= 0  && $this->iX <= 1.0 ) {

	    $w = imagesx($aImg->img);

	    $this->iX = round($w*$this->iX);

	}

	if( $this->iY >= 0  && $this->iY <= 1.0 ) {

	    $h = imagesy($aImg->img);

	    $this->iY = round($h*$this->iY);

	}

	if( $this->iHorAnchor == 'center' )

	    $this->iX -= round($iconw*$this->iScale/2);

	if( $this->iHorAnchor == 'right' )

	    $this->iX -= round($iconw*$this->iScale);

	if( $this->iVertAnchor == 'center' )

	    $this->iY -= round($iconh*$this->iScale/2);

	if( $this->iVertAnchor == 'bottom' )

	    $this->iY -= round($iconh*$this->iScale);

	$aImg->CopyMerge($gdimg,$this->iX,$this->iY,0,0,

			 round($iconw*$this->iScale),round($iconh*$this->iScale),

			 $iconw,$iconh,

			 $this->iMix);

    }

}

?>