<?php
// Displays a fan chart
//
// webtrees: Web based Family History software
// Copyright (C) 2011 webtrees development team.
//
// Derived from PhpGedView
// Copyright (C) 2002 to 2010  PGV Development Team.  All rights reserved.
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
//
// $Id$

define('WT_SCRIPT_NAME', 'fanchart.php');
require './includes/session.php';
require_once WT_ROOT.'includes/functions/functions_charts.php';

/**
 * split and center text by lines
 *
 * @param string $data input string
 * @param int $maxlen max length of each line
 * @return string $text output string
 */
function split_align_text($data, $maxlen) {
	global $RTLOrd;

	$lines = explode("\n", $data);
	// more than 1 line : recursive calls
	if (count($lines)>1) {
		$text = "";
		foreach ($lines as $indexval => $line) $text .= split_align_text($line, $maxlen)."\n";
		return $text;
	}
	// process current line word by word
	$split = explode(" ", $data);
	$text = "";
	$line = "";
	// do not split hebrew line

	$found = false;
	foreach ($RTLOrd as $indexval => $ord) {
		if (strpos($data, chr($ord)) !== false) $found=true;
	}
	if ($found) $line=$data;
	else
	foreach ($split as $indexval => $word) {
		$len = strlen($line);
		//if (!empty($line) and ord($line{0})==215) $len/=2; // hebrew text
		$wlen = strlen($word);
		// line too long ?
		if (($len+$wlen)<$maxlen) {
			if (!empty($line)) $line .= " ";
			$line .= "$word";
		}
		else {
			$p = max(0,floor(($maxlen-$len)/2));
			if (!empty($line)) {
				$line = str_repeat(" ", $p) . "$line"; // center alignment using spaces
				$text .= "$line\n";
			}
			$line = $word;
		}
	}
	// last line
	if (!empty($line)) {
		$len = strlen($line);
		if (in_array(ord($line{0}),$RTLOrd)) $len/=2;
		$p = max(0,floor(($maxlen-$len)/2));
		$line = str_repeat(" ", $p) . "$line"; // center alignment using spaces
		$text .= "$line";
	}
	return $text;
}

/**
 * print ancestors on a fan chart
 *
 * @param array $treeid ancestry pid
 * @param int $fanw fan width in px (default=640)
 * @param int $fandeg fan size in deg (default=270)
 */
function print_fan_chart($treeid, $fanw=640, $fandeg=270) {
	global $PEDIGREE_GENERATIONS, $fan_width, $fan_style, $name, $TEXT_DIRECTION;
	global $WT_IMAGES, $GEDCOM, $fanChart;

	// check for GD 2.x library
	if (!defined("IMG_ARC_PIE")) {
		echo "<span class=\"error\">".WT_I18N::translate('PHP server misconfiguration: GD 2.x library required to use image functions.')."</span>";
		echo " <a href=\"" . WT_I18N::translate('http://www.php.net/gd') . "\"><img src=\"".$WT_IMAGES["help"]."\" class=\"icon\" alt=\"\" /></a><br /><br />";
		return false;
	}
	if (!function_exists("ImageTtfBbox")) {
		echo "<span class=\"error\">".WT_I18N::translate('PHP server misconfiguration: FreeType library required to use TrueType fonts.')."</span>";
		echo " <a href=\"" . WT_I18N::translate('http://www.php.net/gd') . "\"><img src=\"".$WT_IMAGES["help"]."\" class=\"icon\" alt=\"\" /></a><br /><br />";
		return false;
	}

	// Validate
	if (!file_exists($fanChart['font'])) {
		echo '<p class="ui-state-error">', WT_I18N::translate('The file “%s” does not exist.', $fanChart['font']), '</p>';
		return false;
	}

	$fanChart['size'] = intval($fanChart['size']);
	if ($fanChart['size']<2) $fanChart['size'] = 7;

	if (empty($fanChart['color']) || $fanChart['color']{0}!='#') $fanChart['color'] = '#000000';
	if (empty($fanChart['bgColor']) || $fanChart['bgColor']{0}!='#') $fanChart['bgColor'] = '#EEEEEE';
	if (empty($fanChart['bgMColor']) || $fanChart['bgMColor']{0}!='#') $fanChart['bgMColor'] = '#D0D0AC';
	if (empty($fanChart['bgFColor']) || $fanChart['bgFColor']{0}!='#') $fanChart['bgFColor'] = '#D0ACD0';

	$treesize=count($treeid);
	if ($treesize<1) return;

	// generations count
	$gen=log($treesize)/log(2)-1;
	$sosa=$treesize-1;

	// fan size
	if ($fandeg==0) $fandeg=360;
	$fandeg=min($fandeg, 360);
	$fandeg=max($fandeg, 90);
	$cx=$fanw/2-1; // center x
	$cy=$cx; // center y
	$rx=$fanw-1;
	$rw=$fanw/($gen+1);
	$fanh=$fanw; // fan height
	if ($fandeg==180) $fanh=round($fanh*($gen+1)/($gen*2));
	if ($fandeg==270) $fanh=round($fanh*.86);
	$scale=$fanw/640;

	// image init
	$image = ImageCreate($fanw, $fanh);
	$black = ImageColorAllocate($image, 0, 0, 0);
	$white = ImageColorAllocate($image, 0xFF, 0xFF, 0xFF);
	ImageFilledRectangle ($image, 0, 0, $fanw, $fanh, $white);
	ImageColorTransparent($image, $white);

	$color = ImageColorAllocate($image, hexdec(substr($fanChart['color'],1,2)), hexdec(substr($fanChart['color'],3,2)), hexdec(substr($fanChart['color'],5,2)));
	$bgcolor = ImageColorAllocate($image, hexdec(substr($fanChart['bgColor'],1,2)), hexdec(substr($fanChart['bgColor'],3,2)), hexdec(substr($fanChart['bgColor'],5,2)));
	$bgcolorM = ImageColorAllocate($image, hexdec(substr($fanChart['bgMColor'],1,2)), hexdec(substr($fanChart['bgMColor'],3,2)), hexdec(substr($fanChart['bgMColor'],5,2)));
	$bgcolorF = ImageColorAllocate($image, hexdec(substr($fanChart['bgFColor'],1,2)), hexdec(substr($fanChart['bgFColor'],3,2)), hexdec(substr($fanChart['bgFColor'],5,2)));

	// imagemap
	$imagemap="<map id=\"fanmap\" name=\"fanmap\">";

	// loop to create fan cells
	while ($gen>=0) {
		// clean current generation area
		$deg2=360+($fandeg-180)/2;
		$deg1=$deg2-$fandeg;
		ImageFilledArc($image, $cx, $cy, $rx, $rx, $deg1, $deg2, $bgcolor, IMG_ARC_PIE);
		$rx-=3;

		// calculate new angle
		$p2=pow(2, $gen);
		$angle=$fandeg/$p2;
		$deg2=360+($fandeg-180)/2;
		$deg1=$deg2-$angle;
		// special case for rootid cell
		if ($gen==0) {
			$deg1=90;
			$deg2=360+$deg1;
		}

		// draw each cell
		while ($sosa >= $p2) {
			$pid=$treeid[$sosa];
			if ($pid) {
				$person =WT_Person::getInstance($pid);
				$name   =$person->getFullName();
				$addname=$person->getAddName();

				switch($person->getSex()) {
				case 'M':
					$bg=$bgcolorM;
					break;
				case 'F':
					$bg=$bgcolorF;
					break;
				case 'U':
					$bg=$bgcolor;
					break;
				}

				ImageFilledArc($image, $cx, $cy, $rx, $rx, $deg1, $deg2, $bg, IMG_ARC_PIE);

//$name = str_replace(array('<span class="starredname">', '</span>'), '', $name);
//$addname = str_replace(array('<span class="starredname">', '</span>'), '', $addname);
//$name = str_replace(array('<span class="starredname">', '</span>'), array('<u>', '</u>'), $name); //@@
//$addname = str_replace(array('<span class="starredname">', '</span>'), array('<u>', '</u>'), $addname); //@@
// ToDo - print starred names underlined - 1985154
// Todo - print Arabic letters combined - 1360209

				$text = reverseText($name) . "\n";
				if (!empty($addname)) $text .= reverseText($addname). "\n";

				if ($person->canDisplayDetails()) {
					$birthrec = get_sub_record(1, "1 BIRT", $person->getGedcomRecord());
					$ct = preg_match("/2 DATE.*(\d\d\d\d)/", $birthrec, $match);
					if ($ct>0) $text.= trim($match[1]);
					$deathrec = get_sub_record(1, "1 DEAT", $person->getGedcomRecord());
					$ct = preg_match("/2 DATE.*(\d\d\d\d)/", $deathrec, $match);
					if ($ct>0) $text.= "-".trim($match[1]);
				}

				$text = unhtmlentities($text);
				$text = strip_tags($text);
//Do we still need?

				// split and center text by lines
				$wmax = floor($angle*7/$fanChart['size']*$scale);
				$wmax = min($wmax, 35*$scale);
				if ($gen==0) $wmax = min($wmax, 17*$scale);
				$text = split_align_text($text, $wmax);

				// text angle
				$tangle = 270-($deg1+$angle/2);
				if ($gen==0) $tangle=0;

				// calculate text position
				$bbox=ImageTtfBbox((double)$fanChart['size'], 0, $fanChart['font'], $text);
				$textwidth = $bbox[4];
				$deg = $deg1+.44;
				if ($deg2-$deg1>40) $deg = $deg1+($deg2-$deg1)/11;
				if ($deg2-$deg1>80) $deg = $deg1+($deg2-$deg1)/7;
				if ($deg2-$deg1>140) $deg = $deg1+($deg2-$deg1)/4;
				if ($gen==0) $deg=180;
				$rad=deg2rad($deg);
				$mr=($rx-$rw/4)/2;
				if ($gen>0 and $deg2-$deg1>80) $mr=$rx/2;
				$tx=$cx + ($mr) * cos($rad);
				$ty=$cy - $mr * -sin($rad);
				if ($sosa==1) $ty-=$mr/2;

				// print text
				ImageTtfText($image, (double)$fanChart['size'], $tangle, $tx, $ty, $color, $fanChart['font'], $text);

				$imagemap .= "<area shape=\"poly\" coords=\"";
				// plot upper points
				$mr=$rx/2;
				$deg=$deg1;
				while ($deg<=$deg2) {
					$rad=deg2rad($deg);
					$tx=round($cx + ($mr) * cos($rad));
					$ty=round($cy - $mr * -sin($rad));
					$imagemap .= "$tx, $ty, ";
					$deg+=($deg2-$deg1)/6;
				}
				// plot lower points
				$mr=($rx-$rw)/2;
				$deg=$deg2;
				while ($deg>=$deg1) {
					$rad=deg2rad($deg);
					$tx=round($cx + ($mr) * cos($rad));
					$ty=round($cy - $mr * -sin($rad));
					$imagemap .= "$tx, $ty, ";
					$deg-=($deg2-$deg1)/6;
				}
				// join first point
				$mr=$rx/2;
				$deg=$deg1;
				$rad=deg2rad($deg);
				$tx=round($cx + ($mr) * cos($rad));
				$ty=round($cy - $mr * -sin($rad));
				$imagemap .= "$tx, $ty";
				// add action url
				$tempURL = $person->getHtmlUrl();
				$imagemap .= "\" href=\"$tempURL\" ";
				$tempURL = "fanchart.php?rootid={$pid}&PEDIGREE_GENERATIONS={$PEDIGREE_GENERATIONS}&fan_width={$fan_width}&fan_style={$fan_style}&amp;ged=".WT_GEDURL;
				$count=0;
				$lbwidth=200;
				echo "<div id=\"I".$pid.".".$count."links\" style=\"position:absolute; >";
				echo "left:".$tx."px; top:".$ty."px; width: ".($lbwidth)."px; visibility:hidden; z-index:'100';\">";
				echo "<table class=\"person_box\"><tr><td class=\"details1\">";
				echo "<a href=\"".$person->getHtmlUrl()."\" class=\"name1\">" . $name;
				if (!empty($addname)) echo "<br />" . $addname;
				echo "</a>";
				echo "<br /><a href=\"pedigree.php?rootid=$pid&amp;ged=".WT_GEDURL."\" >".WT_I18N::translate('Pedigree')."</a>";
				if (array_key_exists('googlemap', WT_Module::getActiveModules())) {
					echo "<br /><a href=\"module.php?mod=googlemap&mod_action=pedigree_map&rootid=".$pid."&amp;ged=".WT_GEDURL."\" onmouseover=\"clear_family_box_timeout('".$pid.".".$count."');\" onmouseout=\"family_box_timeout('".$pid.".".$count."');\">".WT_I18N::translate('Pedigree map')."</a>";
				}
				if (WT_USER_GEDCOM_ID && WT_USER_GEDCOM_ID!=$pid) {
					echo "<br /><a href=\"relationship.php?pid1=".WT_USER_GEDCOM_ID."&amp;pid2={$pid}&amp;ged=".WT_GEDURL."\" onmouseover=\"clear_family_box_timeout('".$pid.".".$count."');\" onmouseout=\"family_box_timeout('".$pid.".".$count."');\">".WT_I18N::translate('Relationship to me')."</a>";
				}
				echo "<br /><a href=\"descendancy.php?pid=$pid&amp;ged=".WT_GEDURL."\" >".WT_I18N::translate('Descendants')."</a>";
				echo "<br /><a href=\"ancestry.php?rootid=$pid&amp;ged=".WT_GEDURL."\" onmouseover=\"clear_family_box_timeout('".$pid.".".$count."');\" onmouseout=\"family_box_timeout('".$pid.".".$count."');\">".WT_I18N::translate('Ancestors')."</a>";
				echo "<br /><a href=\"compact.php?rootid=$pid&amp;ged=".WT_GEDURL."\" onmouseover=\"clear_family_box_timeout('".$pid.".".$count."');\" onmouseout=\"family_box_timeout('".$pid.".".$count."');\">".WT_I18N::translate('Compact tree')."</a>";
				echo "<br /><a href=\"".$tempURL."\" onmouseover=\"clear_family_box_timeout('".$pid.".".$count."');\" onmouseout=\"family_box_timeout('".$pid.".".$count."');\">".WT_I18N::translate('Fan chart')."</a>";
				echo "<br /><a href=\"hourglass.php?pid=$pid&amp;ged=".WT_GEDURL."\" onmouseover=\"clear_family_box_timeout('".$pid.".".$count."');\" onmouseout=\"family_box_timeout('".$pid.".".$count."');\">".WT_I18N::translate('Hourglass chart')."</a>";
				if (array_key_exists('tree', WT_Module::getActiveModules())) {
					echo '<br /><a href="module.php?mod=tree&amp;mod_action=treeview&amp;ged='.WT_GEDURL.'&amp;rootid='.$pid."\" onmouseover=\"clear_family_box_timeout('".$pid.".".$count."');\" onmouseout=\"family_box_timeout('".$pid.".".$count."');\">".WT_I18N::translate('Interactive tree')."</a>";
				}
				// spouse(s) and children
				foreach ($person->getSpouseFamilies() as $family) {
					$spouse=$family->getSpouse($person);
					if ($spouse) {
						echo '<br /><a href="', $spouse->getHtmlUrl(), '" class="name1">', $spouse->getFullName(), '</a>';
					}
					foreach ($family->getChildren() as $child) {
						echo '<br />&nbsp;&nbsp;<a href="', $child->getHtmlUrl(), '" class="name1">&lt; ', $child->getFullName(), '</a>';
					}
				}
				// siblings
				foreach ($person->getChildFamilies() as $family) {
					$children=$family->getChildren();
					if (count($children)>2) {
						echo '<br /><span class="name1">', WT_I18N::translate('Siblings'), '</span>';
					} elseif (count($children)==2) {
						echo '<br /><span class="name1">', WT_I18N::translate('Sibling'), '</span>';
					}
					foreach ($children as $sibling) {
						if (!$sibling->equals($person)) {
							echo '<br />&nbsp;&nbsp;<a href="', $sibling->getHtmlUrl(), '" class="name1"> ', $sibling->getFullName(), '</a>';
						}
					}
				}
				echo '</td></tr></table>';
				echo '</div>';
				$imagemap .= " onclick=\"show_family_box('".$pid.".".$count."', 'relatives'); return false;\"";
				$imagemap .= " onmouseout=\"family_box_timeout('".$pid.".".$count."'); return false;\"";
				$imagemap .= " alt=\"".htmlspecialchars(strip_tags($name))."\" title=\"".htmlspecialchars(strip_tags($name))."\" />";
			}
			$deg1-=$angle;
			$deg2-=$angle;
			$sosa--;
		}
		$rx-=$rw;
		$gen--;
	}

	$imagemap .= "</map>";
	echo $imagemap;

	ImageStringUp($image, 1, $fanw-10, $fanh/3, WT_SERVER_NAME.WT_SCRIPT_PATH, $color);

	// here we cannot send image to browser ('header already sent')
	// and we dont want to use a tmp file

	// step 1. save image data in a session variable
	ob_start();
	ImagePng($image);
	$image_data = ob_get_contents();
	ob_end_clean();
	$image_data = serialize($image_data);
	unset ($_SESSION['image_data']);
	$_SESSION['image_data']=$image_data;

	// step 2. call imageflush.php to read this session variable and display image
	// note: arg "image_name=" is to avoid image miscaching
	$image_name= "V".time();
	unset($_SESSION[$image_name]); // statisticsplot.php uses this to hold a filename to send to browser
	$image_title=preg_replace("~<.*>~", "", $name) . " " . WT_I18N::translate('Fan chart');
	echo "<p align=\"center\" >";
	echo "<img src=\"imageflush.php?image_type=png&amp;image_name=$image_name&amp;height=$fanh&amp;width=$fanw\" width=\"$fanw\" height=\"$fanh\" border=\"0\" alt=\"$image_title\" title=\"$image_title\" usemap=\"#fanmap\" />";
	echo "</p>";
	ImageDestroy($image);
}

// Extract form parameters
$rootid   =safe_GET_xref('rootid');
$fan_style=safe_GET_integer('fan_style',  2,  4,  3);
$fan_width=safe_GET_integer('fan_width',  50, 300, 100);
$PEDIGREE_GENERATIONS=safe_GET_integer('PEDIGREE_GENERATIONS', 2, $MAX_PEDIGREE_GENERATIONS, $DEFAULT_PEDIGREE_GENERATIONS);

// Validate form parameters
$rootid = check_rootid($rootid);

$person =WT_Person::getInstance($rootid);
$name   =$person->getFullName();
$addname=$person->getAddName();

// -- print html header information
print_header(/* I18N: http://en.wikipedia.org/wiki/Family_tree#Fan_chart - %s is a person's name */ WT_I18N::translate('Fan chart of %s', $person->getFullName()));

if ($ENABLE_AUTOCOMPLETE) require WT_ROOT.'js/autocomplete.js.htm';

if (strlen($name)<30) $cellwidth="420";
else $cellwidth=(strlen($name)*14);
echo "<table class=\"list_table $TEXT_DIRECTION\"><tr><td width=\"".$cellwidth."px\" valign=\"top\">";
echo '<h2>', WT_I18N::translate('Fan chart of %s', $person->getFullName()), '</h2>';

// -- print the form to change the number of displayed generations
echo WT_JS_START;
echo "var pastefield; function paste_id(value) { pastefield.value=value; }";
echo WT_JS_END;
echo "</td><td><form name=\"people\" method=\"get\" action=\"?\">";
echo "<table class=\"list_table $TEXT_DIRECTION\"><tr>";

// NOTE: rootid
echo "<td class=\"descriptionbox\">";
echo WT_I18N::translate('Root Person ID'), help_link('rootid');
echo "</td><td class=\"optionbox\">";
echo "<input class=\"pedigree_form\" type=\"text\" name=\"rootid\" id=\"rootid\" size=\"3\" value=\"$rootid\" />";
print_findindi_link("rootid","");
echo "</td>";

// NOTE: fan style
echo "<td rowspan=\"3\" class=\"descriptionbox\">";
echo WT_I18N::translate('Circle diagram'), help_link('fan_style');
echo "</td><td rowspan=\"3\" class=\"optionbox\">";
echo "<input type=\"radio\" name=\"fan_style\" value=\"2\"";
if ($fan_style==2) echo " checked=\"checked\"";
echo " /> 1/2";
echo "<br /><input type=\"radio\" name=\"fan_style\" value=\"3\"";
if ($fan_style==3) echo " checked=\"checked\"";
echo " /> 3/4";
echo "<br /><input type=\"radio\" name=\"fan_style\" value=\"4\"";
if ($fan_style==4) echo " checked=\"checked\"";
echo " /> 4/4";

// NOTE: submit
echo "</td><td rowspan=\"3\" class=\"topbottombar vmiddle\">";
echo "<input type=\"submit\" value=\"" . WT_I18N::translate('View') . "\" />";
echo "</td></tr>";

// NOTE: generations
echo "<tr><td class=\"descriptionbox\">";
echo WT_I18N::translate('Generations'), help_link('PEDIGREE_GENERATIONS');
echo "</td><td class=\"optionbox\">";
echo "<select name=\"PEDIGREE_GENERATIONS\">";
// Can only show 9 generations (256 ancestors) as graphics library has integer degree resolution
for ($i=2; $i<=min(9,$MAX_PEDIGREE_GENERATIONS); $i++) {
echo "<option value=\"".$i."\"" ;
if ($i == $PEDIGREE_GENERATIONS) echo "selected=\"selected\" ";
	echo ">".$i."</option>";
}
echo "</select>";
echo "</td>";
echo "</tr><tr>";
// NOTE: fan width
echo "<td class=\"descriptionbox\">";
echo WT_I18N::translate('Width'), help_link('fan_width');
echo "</td><td class=\"optionbox\">";
echo "<input type=\"text\" size=\"3\" name=\"fan_width\" value=\"$fan_width\" /> <b>%</b> ";
echo "</td>";
echo "</tr></table>";
echo "</form><br />";
echo "</td></tr></table>";

$treeid = ancestry_array($rootid);
print_fan_chart($treeid, 640*$fan_width/100, $fan_style*90);

print_footer();
