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<?php
//=======================================================================
// File: JPGRAPH_ICONPLOT.PHP
// Description: PHP4 Graph Plotting library. Extension module.
// Created: 2004-02-18
// Author: Johan Persson (johanp@aditus.nu)
// Ver: $Id: jpgraph_iconplot.php 21 2005-05-30 20:35:34Z 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;
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::Raise('Mix value for icon must be between 0 and 100.');
}
$this->iMix = $aMix ;
}
function SetCountryFlag($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::Raise('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::Raise('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::Raise("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 _Stroke($aImg,$x=null,$y=null) {
if( $this->iFile != '' && $this->iCountryFlag != '' ) {
JpGraphError::Raise('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);
}
else {
if( ! class_exists('FlagImages') ) {
JpGraphError::Raise('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);
}
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);
}
$iconw = imagesx($gdimg);
$iconh = imagesy($gdimg);
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);
}
}
?>
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