content/classes/Media/class.ilMapArea.php

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<?php
/*
        +-----------------------------------------------------------------------------+
        | ILIAS open source                                                           |
        +-----------------------------------------------------------------------------+
        | Copyright (c) 1998-2001 ILIAS open source, University of Cologne            |
        |                                                                             |
        | 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. |
        +-----------------------------------------------------------------------------+
*/

require_once("content/classes/Pages/class.ilInternalLink.php");

define("IL_AREA_RECT", "Rect");
define("IL_AREA_CIRCLE", "Circle");
define("IL_AREA_POLY", "Poly");

define("IL_INT_LINK", "int");
define("IL_EXT_LINK", "ext");

define("IL_LT_STRUCTURE", "StructureObject");
define("IL_LT_PAGE", "PageObject");
define("IL_LT_MEDIA", "MediaObject");
define("IL_LT_GLITEM", "GlossaryItem");

define("IL_TF_MEDIA", "Media");
define("IL_TF_FAQ", "FAQ");
define("IL_TF_GLOSSARY", "Glossary");
define("IL_TF_NEW", "New");


class ilMapArea
{
        var $ilias;
        var $item_id;
        var $nr;
        var $shape;
        var $coords;
        var $title;
        var $linktype;
        var $xl_title;
        var $xl_href;
        var $il_target;
        var $il_type;
        var $il_target_frame;


        function ilMapArea($a_item_id = 0, $a_nr = 0)
        {
                global $ilias;

                $this->ilias =& $ilias;
                $this->title = "";

                if ($a_item_id !=0 && $a_nr != 0)
                {
                        $this->setItemId($a_item_id);
                        $this->setNr($a_nr);
                        $this->read();
                }
        }

        function create()
        {
                global $ilDB;

                $q = "INSERT INTO map_area (item_id, nr, shape, ".
                        "coords, link_type, title, href, target, type, target_frame) ".
                        " VALUES (".
                        $ilDB->quote($this->getItemId()).",".
                        $ilDB->quote($this->getNr()).",".
                        $ilDB->quote($this->getShape()).",".
                        $ilDB->quote($this->getCoords()).",".
                        $ilDB->quote($this->getLinkType()).",".
                        $ilDB->quote($this->getTitle()).",".
                        $ilDB->quote($this->getHref()).",".
                        $ilDB->quote($this->getTarget()).",".
                        $ilDB->quote($this->getType()).",".
                        $ilDB->quote($this->getTargetFrame()).")";
                $this->ilias->db->query($q);
        }

        function _getMaxNr($a_item_id)
        {
                $q = "SELECT max(nr) AS max_nr FROM map_area WHERE item_id='".$a_item_id."'";
                $max_set = $this->ilias->db->query($q);
                $max_rec = $max_set->fetchRow(DB_FETCHMODE_ASSOC);

                return $max_rec["max_nr"];
        }

        function read()
        {
                $q = "SELECT * FROM map_area WHERE item_id='".$this->getItemId().
                        "' AND nr='".$this->getNr()."'";
                $area_set = $this->ilias->db->query($q);
                $area_rec = $area_set->fetchRow(DB_FETCHMODE_ASSOC);

                $this->setShape($area_rec["shape"]);
//echo $area_rec["Shape"];
                $this->setNr($area_rec["nr"]);
                $this->setCoords($area_rec["coords"]);
                $this->setLinkType($area_rec["link_type"]);
                $this->setTitle($area_rec["title"]);
                $this->setHref($area_rec["href"]);
                $this->setTarget($area_rec["target"]);
                $this->setType($area_rec["type"]);
                $this->setTargetFrame($area_rec["target_frame"]);
        }

        function update()
        {
                global $ilDB;

                $q = "UPDATE map_area SET shape = ".$ilDB->quote($this->getShape()).
                        ", coords = ".$ilDB->quote($this->getCoords()).
                        ", link_type = ".$ilDB->quote($this->getLinkType()).
                        ", title = ".$ilDB->quote($this->getTitle()).
                        ", href = ".$ilDB->quote($this->getHref()).
                        ", target = ".$ilDB->quote($this->getTarget()).
                        ", type = ".$ilDB->quote($this->getType()).
                        ", target_frame = ".$ilDB->quote($this->getTargetFrame()).
                        " WHERE item_id = ".$ilDB->quote($this->getItemId())." AND nr = ".
                                $ilDB->quote($this->getNr());
                $this->ilias->db->query($q);
//echo "<br>$q<br>";
        }

        function _resolveIntLinks($a_item_id)
        {
                global $ilDB;

//echo "maparea::resolve<br>";
                $q = "SELECT * FROM map_area WHERE item_id='".$a_item_id."'";
                $area_set = $this->ilias->db->query($q);
                while ($area_rec = $area_set->fetchRow(DB_FETCHMODE_ASSOC))
                {
                        $target = $area_rec["target"];
                        $type = $area_rec["type"];
                        $item_id = $area_rec["item_id"];
                        $nr = $area_rec["nr"];

                        if (($area_rec["link_type"] == IL_INT_LINK) && (!is_int(strpos($target, "__"))))
                        {
                                $new_target = ilInternalLink::_getIdForImportId($type, $target);
                                if ($new_target !== false)
                                {
                                        $query = "UPDATE map_area SET target= ".$ilDB->quote($new_target)." ".
                                                "WHERE item_id= ".$ilDB->quote($item_id)." AND nr=".$ilDB->quote($nr);
                                        $this->ilias->db->query($query);
                                }
                        }
                }
        }

        function _getIntLinks($a_item_id)
        {
                $q = "SELECT * FROM map_area WHERE item_id='".$a_item_id."'";
                $area_set = $this->ilias->db->query($q);

                $links = array();

                while ($area_rec = $area_set->fetchRow(DB_FETCHMODE_ASSOC))
                {
                        $target = $area_rec["target"];
                        $type = $area_rec["type"];
                        $targetframe = $area_rec["target_frame"];

                        if (($area_rec["link_type"] == IL_INT_LINK) && (is_int(strpos($target, "__"))))
                        {
                                $links[$target.":".$type.":".$targetframe] =
                                        array("Target" => $target, "Type" => $type,
                                                "TargetFrame" => $targetframe);
                        }
                }
                return $links;
        }

        function setItemId($a_item_id)
        {
                $this->item_id = $a_item_id;
        }

        function getItemId()
        {
                return $this->item_id;
        }

        function setNr($a_nr)
        {
                $this->nr = $a_nr;
        }

        function getNr()
        {
                return $this->nr;
        }

        function setShape($a_shape)
        {
                $this->shape = $a_shape;
        }

        function getShape()
        {
                return $this->shape;
        }

        function setCoords($a_coords)
        {
                $this->coords = $a_coords;
        }

        function getCoords()
        {
                return $this->coords;
        }

        function setTitle($a_title)
        {
                $this->title = $a_title;
        }

        function appendTitle($a_title_str)
        {
                $this->title.= $a_title_str;
        }

        function getTitle()
        {
                return $this->title;
        }

        function setLinkType($a_link_type)
        {
                $this->linktype = $a_link_type;
        }

        function getLinkType()
        {
                return $this->linktype;
        }

        function setHref($a_href)
        {
                $this->xl_href = $a_href;
        }

        function getHref()
        {
                return $this->xl_href;
        }

        function setExtTitle($a_title)
        {
                $this->xl_title = $a_title;
        }

        function getExtTitle()
        {
                return $this->xl_title;
        }

        function setTarget($a_target)
        {
                $this->il_target = $a_target;
        }

        function getTarget($a_insert_inst = false)
        {
                $target = $this->il_target;

                if ((substr($target, 0, 4) == "il__") && $a_insert_inst)
                {
                        $target = "il_".IL_INST_ID."_".substr($target, 4, strlen($target) - 4);
                }

                return $target;
        }

        function setType($a_type)
        {
                $this->il_type = $a_type;
        }

        function getType()
        {
                return $this->il_type;
        }

        function setTargetFrame($a_target_frame)
        {
                $this->il_target_frame = $a_target_frame;
        }

        function getTargetFrame()
        {
                return $this->il_target_frame;
        }

        function draw(&$a_image, $a_col1, $a_col2, $a_close_poly = true)
        {
                switch ($this->getShape())
                {
                        case "Rect" :
                                $this->drawRect($a_image, $this->getCoords(), $a_col1, $a_col2);
                                break;

                        case "Circle" :
                                $this->drawCircle($a_image, $this->getCoords(), $a_col1, $a_col2);
                                break;

                        case "Poly" :
                                $this->drawPoly($a_image, $this->getCoords(), $a_col1, $a_col2, $a_close_poly);
                                break;
                }
        }

        function drawLine(&$im, $x1, $y1, $x2, $y2, $c1, $c2)
        {
                imageline($im, $x1+1, $y1, $x2+1, $y2, $c1);
                imageline($im, $x1-1, $y1, $x2-1, $y2, $c1);
                imageline($im, $x1, $y1+1, $x2, $y2+1, $c1);
                imageline($im, $x1, $y1-1, $x2, $y2-1, $c1);
                imageline($im, $x1, $y1, $x2, $y2, $c2);
        }

        function drawRect(&$im,$coords,$c1,$c2)
        {
                $coord=explode(",", $coords);
                $this->drawLine($im, $coord[0], $coord[1], $coord[0], $coord[3], $c1, $c2);
                $this->drawLine($im, $coord[0], $coord[3], $coord[2], $coord[3], $c1, $c2);
                $this->drawLine($im, $coord[2], $coord[3], $coord[2], $coord[1], $c1, $c2);
                $this->drawLine($im, $coord[2], $coord[1], $coord[0], $coord[1], $c1, $c2);
        }


        function drawPoly(&$im, $coords, $c1, $c2, $closed)
        {
                if ($closed)
                {
                        $p = 0;
                }
                else
                {
                        $p = 1;
                }

                $anz = ilMapArea::countCoords($coords);

                if ($anz < (3 - $p))
                {
                        return;
                }

                $c = explode(",", $coords);

                for($i=0; $i<$anz-$p; $i++)
                {
                        $this->drawLine($im, $c[$i*2], $c[$i*2+1], $c[($i*2+2)%(2*$anz)],
                                $c[($i*2+3)%(2*$anz)], $c1, $c2);
                }
        }


        function drawCircle(&$im, $coords, $c1, $c2)
        {
                $c = explode(",", $coords);
                imagearc($im, $c[0], $c[1], ($c[2]+1)*2, ($c[2]+1)*2, 1, 360, $c1);
                imagearc($im, $c[0], $c[1], ($c[2]-1)*2, ($c[2]-1)*2, 1, 360, $c1);
                imagearc($im, $c[0], $c[1], $c[2]*2, $c[2]*2, 1, 360, $c2);
        }

        function countCoords($c)
        {
                if ($c == "")
                {
                        return 0;
                }
                else
                {
                        $coord_array = explode(",", $c);
                        return (count($coord_array) / 2);
                }
        }

}
?>