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site/jpgraph/jpgraph_plotline.php 4.12 KB
8ec98c9f   Guillaume   MAJ
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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)
          );
      }
  }
  
  
  ?>