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