<?php
  //=======================================================================
  // File:        JPGRAPH_TEXT.INC.PHP
  // Description: Class to handle text as object in the graph.
  //              The low level text layout engine is handled by the GD class
  // Created:     2001-01-08 (Refactored to separate file 2008-08-01)
  // Ver:         $Id: jpgraph_text.inc.php 1844 2009-09-26 17:05:31Z ljp $
  //
  // Copyright (c) Asial Corporation. All rights reserved.
  //========================================================================
  
  
  //===================================================
  // CLASS Text
  // Description: Arbitrary text object that can be added to the graph
  //===================================================
  class Text {
      public $t;
      public $x=0,$y=0,$halign="left",$valign="top",$color=array(0,0,0);
      public $hide=false, $dir=0;
      public $iScalePosY=null,$iScalePosX=null;
      public $iWordwrap=0;
      public $font_family=FF_DEFAULT,$font_style=FS_NORMAL; // old. FF_FONT1
      protected $boxed=false; // Should the text be boxed
      protected $paragraph_align="left";
      protected $icornerradius=0,$ishadowwidth=3;
      protected $fcolor='white',$bcolor='black',$shadow=false;
      protected $iCSIMarea='',$iCSIMalt='',$iCSIMtarget='',$iCSIMWinTarget='';
      private $iBoxType = 1; // Which variant of filled box around text we want
  
      // for __get, __set
      private $_margin;
      private $_font_size=8; // old. 12
  
      //---------------
      // CONSTRUCTOR
  
      // Create new text at absolute pixel coordinates
      function __construct($aTxt="",$aXAbsPos=0,$aYAbsPos=0) {
          if( ! is_string($aTxt) ) {
              JpGraphError::RaiseL(25050);//('First argument to Text::Text() must be s atring.');
          }
          $this->t = $aTxt;
          $this->x = round($aXAbsPos);
          $this->y = round($aYAbsPos);
          $this->margin = 0;
      }
      //---------------
      // PUBLIC METHODS
      // Set the string in the text object
      function Set($aTxt) {
          $this->t = $aTxt;
      }
  
      // Alias for Pos()
      function SetPos($aXAbsPos=0,$aYAbsPos=0,$aHAlign="left",$aVAlign="top") {
      //$this->Pos($aXAbsPos,$aYAbsPos,$aHAlign,$aVAlign);
          $this->x = $aXAbsPos;
          $this->y = $aYAbsPos;
          $this->halign = $aHAlign;
          $this->valign = $aVAlign;
      }
  
      function SetScalePos($aX,$aY) {
          $this->iScalePosX = $aX;
          $this->iScalePosY = $aY;
      }
  
      // Specify alignment for the text
      function Align($aHAlign,$aVAlign="top",$aParagraphAlign="") {
          $this->halign = $aHAlign;
          $this->valign = $aVAlign;
          if( $aParagraphAlign != "" )
              $this->paragraph_align = $aParagraphAlign;
      }
  
      // Alias
      function SetAlign($aHAlign,$aVAlign="top",$aParagraphAlign="") {
          $this->Align($aHAlign,$aVAlign,$aParagraphAlign);
      }
  
      // Specifies the alignment for a multi line text
      function ParagraphAlign($aAlign) {
          $this->paragraph_align = $aAlign;
      }
  
      // Specifies the alignment for a multi line text
      function SetParagraphAlign($aAlign) {
          $this->paragraph_align = $aAlign;
      }
  
      function SetShadow($aShadowColor='gray',$aShadowWidth=3) {
          $this->ishadowwidth=$aShadowWidth;
          $this->shadow=$aShadowColor;
          $this->boxed=true;
      }
  
      function SetWordWrap($aCol) {
          $this->iWordwrap = $aCol ;
      }
  
      // Specify that the text should be boxed. fcolor=frame color, bcolor=border color,
      // $shadow=drop shadow should be added around the text.
      function SetBox($aFrameColor=array(255,255,255),$aBorderColor=array(0,0,0),$aShadowColor=false,$aCornerRadius=4,$aShadowWidth=3) {
          if( $aFrameColor === false ) {
              $this->boxed=false;
          }
          else {
              $this->boxed=true;
          }
          $this->fcolor=$aFrameColor;
          $this->bcolor=$aBorderColor;
          // For backwards compatibility when shadow was just true or false
          if( $aShadowColor === true ) {
              $aShadowColor = 'gray';
          }
          $this->shadow=$aShadowColor;
          $this->icornerradius=$aCornerRadius;
          $this->ishadowwidth=$aShadowWidth;
      }
  
      function SetBox2($aFrameColor=array(255,255,255),$aBorderColor=array(0,0,0),$aShadowColor=false,$aCornerRadius=4,$aShadowWidth=3) {
          $this->iBoxType=2;
          $this->SetBox($aFrameColor,$aBorderColor,$aShadowColor,$aCornerRadius,$aShadowWidth);
      }
  
      // Hide the text
      function Hide($aHide=true) {
          $this->hide=$aHide;
      }
  
      // This looks ugly since it's not a very orthogonal design
      // but I added this "inverse" of Hide() to harmonize
      // with some classes which I designed more recently (especially)
      // jpgraph_gantt
      function Show($aShow=true) {
          $this->hide=!$aShow;
      }
  
      // Specify font
      function SetFont($aFamily,$aStyle=FS_NORMAL,$aSize=10) {
          $this->font_family=$aFamily;
          $this->font_style=$aStyle;
          $this->font_size=$aSize;
      }
  
      // Center the text between $left and $right coordinates
      function Center($aLeft,$aRight,$aYAbsPos=false) {
          $this->x = $aLeft + ($aRight-$aLeft )/2;
          $this->halign = "center";
          if( is_numeric($aYAbsPos) )
              $this->y = $aYAbsPos;
      }
  
      // Set text color
      function SetColor($aColor) {
          $this->color = $aColor;
      }
  
      function SetAngle($aAngle) {
          $this->SetOrientation($aAngle);
      }
  
      // Orientation of text. Note only TTF fonts can have an arbitrary angle
      function SetOrientation($aDirection=0) {
          if( is_numeric($aDirection) )
              $this->dir=$aDirection;
          elseif( $aDirection=="h" )
              $this->dir = 0;
          elseif( $aDirection=="v" )
              $this->dir = 90;
          else
              JpGraphError::RaiseL(25051);//(" Invalid direction specified for text.");
      }
  
      // Total width of text
      function GetWidth($aImg) {
          $aImg->SetFont($this->font_family,$this->font_style,$this->raw_font_size);
          $w = $aImg->GetTextWidth($this->t,$this->dir);
          return $w;
      }
  
      // Hight of font
      function GetFontHeight($aImg) {
          $aImg->SetFont($this->font_family,$this->font_style,$this->raw_font_size);
          $h = $aImg->GetFontHeight();
          return $h;
  
      }
  
      function GetTextHeight($aImg) {
          $aImg->SetFont($this->font_family,$this->font_style,$this->raw_font_size);
          $h = $aImg->GetTextHeight($this->t,$this->dir);
          return $h;
      }
  
      function GetHeight($aImg) {
      // Synonym for GetTextHeight()
          $aImg->SetFont($this->font_family,$this->font_style,$this->raw_font_size);
          $h = $aImg->GetTextHeight($this->t,$this->dir);
          return $h;
      }
  
      // Set the margin which will be interpretated differently depending
      // on the context.
      function SetMargin($aMarg) {
          $this->margin = $aMarg;
      }
  
      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 SetCSIMTarget($aURITarget,$aAlt='',$aWinTarget='') {
          $this->iCSIMtarget = $aURITarget;
          $this->iCSIMalt = $aAlt;
          $this->iCSIMWinTarget = $aWinTarget;
      }
  
      function GetCSIMareas() {
          if( $this->iCSIMtarget !== '' ) {
              return $this->iCSIMarea;
          }
          else {
              return '';
          }
      }
  
      // Display text in image
      function Stroke($aImg,$x=null,$y=null) {
  
          if( $x !== null ) $this->x = round($x);
          if( $y !== null ) $this->y = round($y);
  
          // Insert newlines
          if( $this->iWordwrap > 0 ) {
              $this->t = wordwrap($this->t,$this->iWordwrap,"\n");
          }
  
          // If position been given as a fraction of the image size
          // calculate the absolute position
          if( $this->x < 1 && $this->x > 0 ) $this->x *= $aImg->width;
          if( $this->y < 1 && $this->y > 0 ) $this->y *= $aImg->height;
  
          $aImg->PushColor($this->color);
          $aImg->SetFont($this->font_family,$this->font_style,$this->raw_font_size);
          $aImg->SetTextAlign($this->halign,$this->valign);
  
          if( $this->boxed ) {
              if( $this->fcolor=="nofill" ) {
                  $this->fcolor=false;
              }
  
              $oldweight=$aImg->SetLineWeight(1);
  
              if( $this->iBoxType == 2 && $this->font_family > FF_FONT2+2 ) {
  
                  $bbox = $aImg->StrokeBoxedText2($this->x, $this->y,
                                                  $this->t, $this->dir,
                                                  $this->fcolor,
                                                  $this->bcolor,
                                                  $this->shadow,
                                                  $this->paragraph_align,
                                                  2,4,
                                                  $this->icornerradius,
                                                  $this->ishadowwidth);
              }
              else {
                  $bbox = $aImg->StrokeBoxedText($this->x,$this->y,$this->t,
                      $this->dir,$this->fcolor,$this->bcolor,$this->shadow,
                      $this->paragraph_align,3,3,$this->icornerradius,
                      $this->ishadowwidth);
              }
  
              $aImg->SetLineWeight($oldweight);
          }
          else {
              $debug=false;
              $bbox = $aImg->StrokeText($this->x,$this->y,$this->t,$this->dir,$this->paragraph_align,$debug);
          }
  
          // Create CSIM targets
          $coords = $bbox[0].','.$bbox[1].','.$bbox[2].','.$bbox[3].','.$bbox[4].','.$bbox[5].','.$bbox[6].','.$bbox[7];
          $this->iCSIMarea = "<area shape=\"poly\" coords=\"$coords\" href=\"".htmlentities($this->iCSIMtarget)."\" ";
          if( trim($this->iCSIMalt) != '' ) {
              $this->iCSIMarea .= " alt=\"".$this->iCSIMalt."\" ";
              $this->iCSIMarea .= " title=\"".$this->iCSIMalt."\" ";
          }
          if( trim($this->iCSIMWinTarget) != '' ) {
              $this->iCSIMarea .= " target=\"".$this->iCSIMWinTarget."\" ";
          }
          $this->iCSIMarea .= " />\n";
  
          $aImg->PopColor($this->color);
      }
  
      function __get($name) {
  
          if (strpos($name, 'raw_') !== false) {
              // if $name == 'raw_left_margin' , return $this->_left_margin;
              $variable_name = '_' . str_replace('raw_', '', $name);
              return $this->$variable_name;
          }
  
          $variable_name = '_' . $name; 
  
          if (isset($this->$variable_name)) {
              return $this->$variable_name * SUPERSAMPLING_SCALE;
          } else {
              JpGraphError::RaiseL('25132', $name);
          } 
      }
  
      function __set($name, $value) {
          $this->{'_'.$name} = $value;
      }
  } // Class
  
  
  ?>