jpgraph_plotline.php
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<?php
/*=======================================================================
// File: JPGRAPH_PLOTLINE.PHP
// Description: PlotLine extension for JpGraph
// Created: 2009-03-24
// Ver: $Id: jpgraph_plotline.php 1931 2010-03-22 15:05:48Z ljp $
//
// CLASS PlotLine
// Data container class to hold properties for a static
// line that is drawn directly in the plot area.
// Useful to add static borders inside a plot to show for example set-values
//
// Copyright (c) Asial Corporation. All rights reserved.
//========================================================================
*/
class PlotLine {
public $scaleposition, $direction=-1;
protected $weight=1;
protected $color = 'black';
private $legend='',$hidelegend=false, $legendcsimtarget='', $legendcsimalt='',$legendcsimwintarget='';
private $iLineStyle='solid';
public $numpoints=0; // Needed since the framework expects this property
function __construct($aDir=HORIZONTAL,$aPos=0,$aColor='black',$aWeight=1) {
$this->direction = $aDir;
$this->color=$aColor;
$this->weight=$aWeight;
$this->scaleposition=$aPos;
}
function SetLegend($aLegend,$aCSIM='',$aCSIMAlt='',$aCSIMWinTarget='') {
$this->legend = $aLegend;
$this->legendcsimtarget = $aCSIM;
$this->legendcsimwintarget = $aCSIMWinTarget;
$this->legendcsimalt = $aCSIMAlt;
}
function HideLegend($f=true) {
$this->hidelegend = $f;
}
function SetPosition($aScalePosition) {
$this->scaleposition=$aScalePosition;
}
function SetDirection($aDir) {
$this->direction = $aDir;
}
function SetColor($aColor) {
$this->color=$aColor;
}
function SetWeight($aWeight) {
$this->weight=$aWeight;
}
function SetLineStyle($aStyle) {
$this->iLineStyle = $aStyle;
}
function GetCSIMAreas() {
return '';
}
//---------------
// PRIVATE METHODS
function DoLegend($graph) {
if( !$this->hidelegend ) $this->Legend($graph);
}
// Framework function the chance for each plot class to set a legend
function Legend($aGraph) {
if( $this->legend != '' ) {
$dummyPlotMark = new PlotMark();
$lineStyle = 1;
$aGraph->legend->Add($this->legend,$this->color,$dummyPlotMark,$lineStyle,
$this->legendcsimtarget,$this->legendcsimalt,$this->legendcsimwintarget);
}
}
function PreStrokeAdjust($aGraph) {
// Nothing to do
}
// Called by framework to allow the object to draw
// optional information in the margin area
function StrokeMargin($aImg) {
// Nothing to do
}
// Framework function to allow the object to adjust the scale
function PrescaleSetup($aGraph) {
// Nothing to do
}
function Min() {
return array(null,null);
}
function Max() {
return array(null,null);
}
function _Stroke($aImg,$aMinX,$aMinY,$aMaxX,$aMaxY,$aXPos,$aYPos) {
$aImg->SetColor($this->color);
$aImg->SetLineWeight($this->weight);
$oldStyle = $aImg->SetLineStyle($this->iLineStyle);
if( $this->direction == VERTICAL ) {
$ymin_abs = $aMinY;
$ymax_abs = $aMaxY;
$xpos_abs = $aXPos;
$aImg->StyleLine($xpos_abs, $ymin_abs, $xpos_abs, $ymax_abs);
}
elseif( $this->direction == HORIZONTAL ) {
$xmin_abs = $aMinX;
$xmax_abs = $aMaxX;
$ypos_abs = $aYPos;
$aImg->StyleLine($xmin_abs, $ypos_abs, $xmax_abs, $ypos_abs);
}
else {
JpGraphError::RaiseL(25125);//(" Illegal direction for static line");
}
$aImg->SetLineStyle($oldStyle);
}
function Stroke($aImg,$aXScale,$aYScale) {
$this->_Stroke($aImg,
$aImg->left_margin,
$aYScale->Translate($aYScale->GetMinVal()),
$aImg->width-$aImg->right_margin,
$aYScale->Translate($aYScale->GetMaxVal()),
$aXScale->Translate($this->scaleposition),
$aYScale->Translate($this->scaleposition)
);
}
}
?>