495 lines
18 KiB
PHP
495 lines
18 KiB
PHP
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<?php
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//=======================================================================
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// File: JPGRAPH_LEGEND.INC.PHP
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// Description: Class to handle the legend box in the graph that gives
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// names on the data series. The number of rows and columns
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// in the legend are user specifyable.
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// Created: 2001-01-08 (Refactored to separate file 2008-08-01)
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// Ver: $Id: jpgraph_legend.inc.php 1926 2010-01-11 16:33:07Z ljp $
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//
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// Copyright (c) Asial Co. Ltd. (Asial USA) All rights reserved.
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//========================================================================
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DEFINE('_DEFAULT_LPM_SIZE',8); // Default Legend Plot Mark size
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//===================================================
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// CLASS Legend
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// Description: Responsible for drawing the box containing
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// all the legend text for the graph
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//===================================================
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class Legend {
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public $txtcol=array();
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public $font_family=FF_DEFAULT,$font_style=FS_NORMAL,$font_size=8; // old. 12
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private $color=array(120,120,120); // Default frame color
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private $fill_color=array(245,245,245); // Default fill color
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private $shadow=false; // Shadow around legend "box"
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private $shadow_color='darkgray';
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private $mark_abs_hsize=_DEFAULT_LPM_SIZE,$mark_abs_vsize=_DEFAULT_LPM_SIZE;
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private $xmargin=10,$ymargin=0,$shadow_width=2;
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private $xlmargin=4;
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private $ylinespacing=5;
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// We need a separate margin since the baseline of the last text would coincide with the bottom otherwise
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private $ybottom_margin = 8;
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private $xpos=0.05, $ypos=0.15, $xabspos=-1, $yabspos=-1;
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private $halign="right", $valign="top";
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private $font_color='black';
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private $hide=false,$layout_n=1;
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private $weight=1,$frameweight=1;
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private $csimareas='';
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private $reverse = false ;
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private $bkg_gradtype=-1, $bkg_gradfrom='lightgray', $bkg_gradto='gray';
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//---------------
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// CONSTRUCTOR
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function __construct() {
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// Empty
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}
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//---------------
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// PUBLIC METHODS
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function Hide($aHide=true) {
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$this->hide=$aHide;
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}
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function SetHColMargin($aXMarg) {
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$this->xmargin = $aXMarg;
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}
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function SetVColMargin($aSpacing) {
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$this->ylinespacing = $aSpacing ;
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}
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function SetLeftMargin($aXMarg) {
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$this->xlmargin = $aXMarg;
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}
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// Synonym
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function SetLineSpacing($aSpacing) {
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$this->ylinespacing = $aSpacing ;
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}
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function SetShadow($aShow='gray',$aWidth=4) {
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if( is_string($aShow) ) {
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$this->shadow_color = $aShow;
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$this->shadow=true;
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}
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else {
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$this->shadow = $aShow;
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}
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$this->shadow_width = $aWidth;
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}
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function SetMarkAbsSize($aSize) {
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$this->mark_abs_vsize = $aSize ;
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$this->mark_abs_hsize = $aSize ;
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}
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function SetMarkAbsVSize($aSize) {
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$this->mark_abs_vsize = $aSize ;
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}
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function SetMarkAbsHSize($aSize) {
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$this->mark_abs_hsize = $aSize ;
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}
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function SetLineWeight($aWeight) {
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$this->weight = $aWeight;
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}
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function SetFrameWeight($aWeight) {
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$this->frameweight = $aWeight;
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}
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function SetLayout($aDirection=LEGEND_VERT) {
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$this->layout_n = $aDirection==LEGEND_VERT ? 1 : 99 ;
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}
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function SetColumns($aCols) {
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$this->layout_n = $aCols ;
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}
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function SetReverse($f=true) {
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$this->reverse = $f ;
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}
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// Set color on frame around box
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function SetColor($aFontColor,$aColor='black') {
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$this->font_color=$aFontColor;
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$this->color=$aColor;
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}
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function SetFont($aFamily,$aStyle=FS_NORMAL,$aSize=10) {
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$this->font_family = $aFamily;
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$this->font_style = $aStyle;
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$this->font_size = $aSize;
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}
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function SetPos($aX,$aY,$aHAlign='right',$aVAlign='top') {
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$this->Pos($aX,$aY,$aHAlign,$aVAlign);
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}
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function SetAbsPos($aX,$aY,$aHAlign='right',$aVAlign='top') {
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$this->xabspos=$aX;
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$this->yabspos=$aY;
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$this->halign=$aHAlign;
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$this->valign=$aVAlign;
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}
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function Pos($aX,$aY,$aHAlign='right',$aVAlign='top') {
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if( !($aX<1 && $aY<1) ) {
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JpGraphError::RaiseL(25120);//(" Position for legend must be given as percentage in range 0-1");
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}
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$this->xpos=$aX;
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$this->ypos=$aY;
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$this->halign=$aHAlign;
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$this->valign=$aVAlign;
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}
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function SetFillColor($aColor) {
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$this->fill_color=$aColor;
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}
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function Clear() {
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$this->txtcol = array();
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}
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function Add($aTxt,$aColor,$aPlotmark='',$aLinestyle=0,$csimtarget='',$csimalt='',$csimwintarget='') {
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$this->txtcol[]=array($aTxt,$aColor,$aPlotmark,$aLinestyle,$csimtarget,$csimalt,$csimwintarget);
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}
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function GetCSIMAreas() {
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return $this->csimareas;
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}
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function SetBackgroundGradient($aFrom='navy',$aTo='silver',$aGradType=2) {
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$this->bkg_gradtype=$aGradType;
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$this->bkg_gradfrom = $aFrom;
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$this->bkg_gradto = $aTo;
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}
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function HasItems() {
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return (boolean)(count($this->txtcol));
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}
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function Stroke($aImg) {
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// Constant
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$fillBoxFrameWeight=1;
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if( $this->hide ) return;
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$aImg->SetFont($this->font_family,$this->font_style,$this->font_size);
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if( $this->reverse ) {
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$this->txtcol = array_reverse($this->txtcol);
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}
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$n=count($this->txtcol);
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if( $n == 0 ) return;
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// Find out the max width and height of each column to be able
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// to size the legend box.
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$numcolumns = ($n > $this->layout_n ? $this->layout_n : $n);
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for( $i=0; $i < $numcolumns; ++$i ) {
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$colwidth[$i] = $aImg->GetTextWidth($this->txtcol[$i][0]) +
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2*$this->xmargin + 2*$this->mark_abs_hsize;
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$colheight[$i] = 0;
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}
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// Find our maximum height in each row
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$rows = 0 ; $rowheight[0] = 0;
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for( $i=0; $i < $n; ++$i ) {
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$h = max($this->mark_abs_vsize,$aImg->GetTextHeight($this->txtcol[$i][0]))+$this->ylinespacing;
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// Makes sure we always have a minimum of 1/4 (1/2 on each side) of the mark as space
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// between two vertical legend entries
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//$h = round(max($h,$this->mark_abs_vsize+$this->ymargin));
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//echo "Textheight #$i: tetxheight=".$aImg->GetTextHeight($this->txtcol[$i][0]).', ';
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//echo "h=$h ({$this->mark_abs_vsize},{$this->ymargin})<br>";
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if( $i % $numcolumns == 0 ) {
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$rows++;
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$rowheight[$rows-1] = 0;
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}
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$rowheight[$rows-1] = max($rowheight[$rows-1],$h)+1;
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}
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$abs_height = 0;
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for( $i=0; $i < $rows; ++$i ) {
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$abs_height += $rowheight[$i] ;
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}
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// Make sure that the height is at least as high as mark size + ymargin
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$abs_height = max($abs_height,$this->mark_abs_vsize);
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$abs_height += $this->ybottom_margin;
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// Find out the maximum width in each column
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for( $i=$numcolumns; $i < $n; ++$i ) {
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$colwidth[$i % $numcolumns] = max(
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$aImg->GetTextWidth($this->txtcol[$i][0])+2*$this->xmargin+2*$this->mark_abs_hsize,
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$colwidth[$i % $numcolumns]);
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}
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// Get the total width
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$mtw = 0;
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for( $i=0; $i < $numcolumns; ++$i ) {
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$mtw += $colwidth[$i] ;
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}
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// remove the last rows interpace margin (since there is no next row)
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$abs_height -= $this->ylinespacing;
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// Find out maximum width we need for legend box
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$abs_width = $mtw+$this->xlmargin+($numcolumns-1)*$this->mark_abs_hsize;
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if( $this->xabspos === -1 && $this->yabspos === -1 ) {
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$this->xabspos = $this->xpos*$aImg->width ;
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$this->yabspos = $this->ypos*$aImg->height ;
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}
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// Positioning of the legend box
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if( $this->halign == 'left' ) {
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$xp = $this->xabspos;
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}
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elseif( $this->halign == 'center' ) {
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$xp = $this->xabspos - $abs_width/2;
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}
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else {
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$xp = $aImg->width - $this->xabspos - $abs_width;
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}
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$yp=$this->yabspos;
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if( $this->valign == 'center' ) {
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$yp-=$abs_height/2;
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}
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elseif( $this->valign == 'bottom' ) {
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$yp-=$abs_height;
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}
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// Stroke legend box
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$aImg->SetColor($this->color);
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$aImg->SetLineWeight($this->frameweight);
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$aImg->SetLineStyle('solid');
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if( $this->shadow ) {
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$aImg->ShadowRectangle($xp,$yp,
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$xp+$abs_width+$this->shadow_width+2,
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$yp+$abs_height+$this->shadow_width+2,
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$this->fill_color,$this->shadow_width+2,$this->shadow_color);
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}
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else {
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$aImg->SetColor($this->fill_color);
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$aImg->FilledRectangle($xp,$yp,$xp+$abs_width,$yp+$abs_height);
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$aImg->SetColor($this->color);
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$aImg->Rectangle($xp,$yp,$xp+$abs_width,$yp+$abs_height);
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}
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if( $this->bkg_gradtype >= 0 ) {
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$grad = new Gradient($aImg);
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$grad->FilledRectangle($xp+1, $yp+1,
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$xp+$abs_width-3, $yp+$abs_height-3,
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$this->bkg_gradfrom, $this->bkg_gradto,
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$this->bkg_gradtype);
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}
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// x1,y1 is the position for the legend marker + text
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// The vertical position is the baseline position for the text
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// and every marker is adjusted acording to that.
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// For multiline texts this get more complicated.
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$x1 = $xp + $this->xlmargin;
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$y1 = $yp + $rowheight[0] - $this->ylinespacing + 2 ; // The ymargin is included in rowheight
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// Now, y1 is the bottom vertical position of the first legend, i.e if
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// the legend has multiple lines it is the bottom line.
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$grad = new Gradient($aImg);
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$patternFactory = null;
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// Now stroke each legend in turn
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// Each plot has added the following information to the legend
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// p[0] = Legend text
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// p[1] = Color,
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// p[2] = For markers a reference to the PlotMark object
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// p[3] = For lines the line style, for gradient the negative gradient style
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// p[4] = CSIM target
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// p[5] = CSIM Alt text
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$i = 1 ; $row = 0;
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foreach($this->txtcol as $p) {
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// STROKE DEBUG BOX
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if( _JPG_DEBUG ) {
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$aImg->SetLineWeight(1);
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$aImg->SetColor('red');
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$aImg->SetLineStyle('solid');
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$aImg->Rectangle($x1,$y1,$xp+$abs_width-1,$y1-$rowheight[$row]);
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}
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$aImg->SetLineWeight($this->weight);
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$x1 = round($x1)+1; // We add one to not collide with the border
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$y1=round($y1);
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// This is the center offset up from the baseline which is
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// considered the "center" of the marks. This gets slightly complicated since
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// we need to consider if the text is a multiline paragraph or if it is only
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// a single line. The reason is that for single line the y1 corresponds to the baseline
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// and that is fine. However for a multiline paragraph there is no single baseline
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// and in that case the y1 corresponds to the lowest y for the bounding box. In that
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// case we center the mark in the middle of the paragraph
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if( !preg_match('/\n/',$p[0]) ) {
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// Single line
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$marky = ceil($y1-$this->mark_abs_vsize/2)-1;
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} else {
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// Paragraph
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$marky = $y1 - $aImg->GetTextHeight($p[0])/2;
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// echo "y1=$y1, p[o]={$p[0]}, marky=$marky<br>";
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}
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//echo "<br>Mark #$i: marky=$marky<br>";
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$x1 += $this->mark_abs_hsize;
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if ( !empty($p[2]) && $p[2]->GetType() > -1 ) {
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|
||
|
|
// Make a plot mark legend. This is constructed with a mark which
|
||
|
|
// is run through with a line
|
||
|
|
|
||
|
|
// First construct a bit of the line that looks exactly like the
|
||
|
|
// line in the plot
|
||
|
|
$aImg->SetColor($p[1]);
|
||
|
|
if( is_string($p[3]) || $p[3]>0 ) {
|
||
|
|
$aImg->SetLineStyle($p[3]);
|
||
|
|
$aImg->StyleLine($x1-$this->mark_abs_hsize,$marky,$x1+$this->mark_abs_hsize,$marky);
|
||
|
|
}
|
||
|
|
|
||
|
|
// Stroke a mark using image
|
||
|
|
if( $p[2]->GetType() == MARK_IMG ) {
|
||
|
|
$p[2]->Stroke($aImg,$x1,$marky);
|
||
|
|
}
|
||
|
|
|
||
|
|
// Stroke a mark with the standard size
|
||
|
|
// (As long as it is not an image mark )
|
||
|
|
if( $p[2]->GetType() != MARK_IMG ) {
|
||
|
|
|
||
|
|
// Clear any user callbacks since we ont want them called for
|
||
|
|
// the legend marks
|
||
|
|
$p[2]->iFormatCallback = '';
|
||
|
|
$p[2]->iFormatCallback2 = '';
|
||
|
|
|
||
|
|
// Since size for circles is specified as the radius
|
||
|
|
// this means that we must half the size to make the total
|
||
|
|
// width behave as the other marks
|
||
|
|
if( $p[2]->GetType() == MARK_FILLEDCIRCLE || $p[2]->GetType() == MARK_CIRCLE ) {
|
||
|
|
$p[2]->SetSize(min($this->mark_abs_vsize,$this->mark_abs_hsize)/2);
|
||
|
|
$p[2]->Stroke($aImg,$x1,$marky);
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
$p[2]->SetSize(min($this->mark_abs_vsize,$this->mark_abs_hsize));
|
||
|
|
$p[2]->Stroke($aImg,$x1,$marky);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
elseif ( !empty($p[2]) && (is_string($p[3]) || $p[3]>0 ) ) {
|
||
|
|
// Draw a styled line
|
||
|
|
$aImg->SetColor($p[1]);
|
||
|
|
$aImg->SetLineStyle($p[3]);
|
||
|
|
$aImg->StyleLine($x1-$this->mark_abs_hsize,$marky,$x1+$this->mark_abs_hsize,$marky);
|
||
|
|
$aImg->StyleLine($x1-$this->mark_abs_hsize,$marky+1,$x1+$this->mark_abs_hsize,$marky+1);
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
// Draw a colored box
|
||
|
|
$color = $p[1] ;
|
||
|
|
|
||
|
|
// We make boxes slightly larger to better show
|
||
|
|
$boxsize = max($this->mark_abs_vsize,$this->mark_abs_hsize) + 2 ;
|
||
|
|
|
||
|
|
$ym = $marky-ceil($boxsize/2) ; // Marker y-coordinate
|
||
|
|
|
||
|
|
// We either need to plot a gradient or a
|
||
|
|
// pattern. To differentiate we use a kludge.
|
||
|
|
// Patterns have a p[3] value of < -100
|
||
|
|
if( $p[3] < -100 ) {
|
||
|
|
// p[1][0] == iPattern, p[1][1] == iPatternColor, p[1][2] == iPatternDensity
|
||
|
|
if( $patternFactory == null ) {
|
||
|
|
$patternFactory = new RectPatternFactory();
|
||
|
|
}
|
||
|
|
$prect = $patternFactory->Create($p[1][0],$p[1][1],1);
|
||
|
|
$prect->SetBackground($p[1][3]);
|
||
|
|
$prect->SetDensity($p[1][2]+1);
|
||
|
|
$prect->SetPos(new Rectangle($x1,$ym,$boxsize,$boxsize));
|
||
|
|
$prect->Stroke($aImg);
|
||
|
|
$prect=null;
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
if( is_array($color) && count($color)==2 ) {
|
||
|
|
// The client want a gradient color
|
||
|
|
$grad->FilledRectangle($x1-$boxsize/2,$ym,
|
||
|
|
$x1+$boxsize/2,$ym+$boxsize,
|
||
|
|
$color[0],$color[1],-$p[3]);
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
$aImg->SetColor($p[1]);
|
||
|
|
$aImg->FilledRectangle($x1-$boxsize/2,$ym, $x1+$boxsize/2,$ym+$boxsize);
|
||
|
|
}
|
||
|
|
|
||
|
|
// Draw a plot frame line
|
||
|
|
$aImg->SetColor($this->color);
|
||
|
|
$aImg->SetLineWeight($fillBoxFrameWeight);
|
||
|
|
$aImg->Rectangle($x1-$boxsize/2,$ym,
|
||
|
|
$x1+$boxsize/2,$ym+$boxsize);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
$aImg->SetColor($this->font_color);
|
||
|
|
$aImg->SetFont($this->font_family,$this->font_style,$this->font_size);
|
||
|
|
$aImg->SetTextAlign('left','baseline');
|
||
|
|
|
||
|
|
$debug=false;
|
||
|
|
$aImg->StrokeText($x1+$this->mark_abs_hsize+$this->xmargin,$y1,$p[0],
|
||
|
|
0,'left',$debug);
|
||
|
|
|
||
|
|
// Add CSIM for Legend if defined
|
||
|
|
if( !empty($p[4]) ) {
|
||
|
|
|
||
|
|
$xs = $x1 - $this->mark_abs_hsize ;
|
||
|
|
$ys = $y1 + 1 ;
|
||
|
|
$xe = $x1 + $aImg->GetTextWidth($p[0]) + $this->mark_abs_hsize + $this->xmargin ;
|
||
|
|
$ye = $y1-$rowheight[$row]+1;
|
||
|
|
$coords = "$xs,$ys,$xe,$y1,$xe,$ye,$xs,$ye";
|
||
|
|
if( ! empty($p[4]) ) {
|
||
|
|
$this->csimareas .= "<area shape=\"poly\" coords=\"$coords\" href=\"".htmlentities($p[4])."\"";
|
||
|
|
|
||
|
|
if( !empty($p[6]) ) {
|
||
|
|
$this->csimareas .= " target=\"".$p[6]."\"";
|
||
|
|
}
|
||
|
|
|
||
|
|
if( !empty($p[5]) ) {
|
||
|
|
$tmp=sprintf($p[5],$p[0]);
|
||
|
|
$this->csimareas .= " title=\"$tmp\" alt=\"$tmp\" ";
|
||
|
|
}
|
||
|
|
$this->csimareas .= " />\n";
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if( $i >= $this->layout_n ) {
|
||
|
|
$x1 = $xp+$this->xlmargin;
|
||
|
|
$row++;
|
||
|
|
if( !empty($rowheight[$row]) )
|
||
|
|
$y1 += $rowheight[$row];
|
||
|
|
$i = 1;
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
$x1 += $colwidth[($i-1) % $numcolumns] ;
|
||
|
|
++$i;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
} // Class
|
||
|
|
|
||
|
|
?>
|