Image map image preview creator. More...

Public Member Functions
	ilImagemapPreview ($imagemap_filename="", $preview_filename="")
	ilImagemapPreview constructor
	addArea ($shape, $coords, $title="", $href="", $target="", $visible=true, $linecolor="red", $bordercolor="white", $fillcolor="\"#FFFFFFC0\"")
	deleteArea ($key, $value)
	createPreview ()
	getPreviewFilename ()
	getImagemap ($title)
	get imagemap html code note: html code should be placed in template files
Data Fields
	$imagemap_filename
	$preview_filename
	$areas
	$linewidth_outer
	$linewidth_inner

Detailed Description

Image map image preview creator.

Takes an image and imagemap areas and creates a preview image containing the imagemap areas.

Author:: Helmut Schottmüller <hschottm@tzi.de>

Version:

Id:: class.ilImagemapPreview.php 11953 2006-09-02 10:38:15Z hschottm

class.ilImagemapPreview.php Assessment

Definition at line 37 of file class.ilImagemapPreview.php.

Member Function Documentation

ilImagemapPreview::addArea	(	$	shape,
		$	coords,
		$	title = `""`,
		$	href = `""`,
		$	target = `""`,
		$	visible = `true`,
		$	linecolor = `"red"`,
		$	bordercolor = `"white"`,
		$	fillcolor = `"\"#FFFFFFC0\""`
	)

Definition at line 74 of file class.ilImagemapPreview.php.

        {
                array_push($this->areas, array(
                        "shape" => "$shape",
                        "coords" => "$coords",
                        "title" => "$title",
                        "href" => "$href",
                        "target" => "$target",
                        "linecolor" => "$linecolor",
                        "fillcolor" => "$fillcolor",
                        "bordercolor" => "$bordercolor",
                        "visible" => (int)$visible
                ));
        }

ilImagemapPreview::createPreview ( )

Definition at line 111 of file class.ilImagemapPreview.php.

References $x, and ilUtil::getConvertCmd().

        {
                if (!count($this->areas)) return;
                $convert_prefix = ilUtil::getConvertCmd() . " -quality 100 ";
                foreach ($this->areas as $area)
                {
                        if ($area["visible"] and strcmp(strtolower($area["shape"]), "rect") == 0)
                        {
                                preg_match("/(\d+)\s*,\s*(\d+)\s*,\s*(\d+)\s*,\s*(\d+)/", $area["coords"], $matches);
                                $x0 = $matches[1];
                                $y0 = $matches[2];
                                $x1 = $matches[3];
                                $y1 = $matches[4];
                                // draw a rect around the selection
                                $convert_cmd .= "-stroke " . $area["bordercolor"] . " -fill " . $area["fillcolor"] . " -strokewidth $this->linewidth_outer -draw \"rectangle " .
                                $x0 . "," . $y0 .       " " . ($x1) . "," . $y1 . "\" " .
                                "-stroke " . $area["linecolor"] . " -fill " . $area["fillcolor"] . " -strokewidth $this->linewidth_inner -draw \"rectangle " .
                                $x0 . "," . $y0 .       " " . ($x1) . "," . $y1 . "\" ";
                        }
                        else if ($area["visible"] and strcmp(strtolower($area["shape"]), "circle") == 0)
                        {
                                preg_match("/(\d+)\s*,\s*(\d+)\s*,\s*(\d+)/", $area["coords"], $matches);
                                $x = $matches[1];
                                $y = $matches[2];
                                $r = $matches[3];
                                // draw a circle around the selection
                                $convert_cmd .= "-stroke " . $area["bordercolor"] . " -fill " . $area["fillcolor"] . " -strokewidth $this->linewidth_outer -draw \"circle " .
                                $x . "," . $y . " " . ($x+$r) . "," . $y . "\" " .
                                "-stroke " . $area["linecolor"] . " -fill " . $area["fillcolor"] . " -strokewidth $this->linewidth_inner -draw \"circle " .
                                $x . "," . $y . " " . ($x+$r) . "," . $y . "\" ";
                        }
                        else if ($area["visible"] and strcmp(strtolower($area["shape"]), "poly") == 0)
                        {
                                // draw a polygon around the selection
                                $convert_cmd .= "-stroke " . $area["bordercolor"] . " -fill " . $area["fillcolor"] . " -strokewidth $this->linewidth_outer -draw \"polygon ";
                                preg_match_all("/(\d+)\s*,\s*(\d+)/", $area["coords"], $matches, PREG_PATTERN_ORDER);
                                for ($i = 0; $i < count($matches[0]); $i++)
                                {
                                        $convert_cmd .= $matches[1][$i] . "," . $matches[2][$i] .       " ";
                                }
                                $convert_cmd .= "\" ";
                                $convert_cmd .= "-stroke " . $area["linecolor"] . " -fill " . $area["fillcolor"] . " -strokewidth $this->linewidth_inner -draw \"polygon ";
                                preg_match_all("/(\d+)\s*,\s*(\d+)/", $area["coords"], $matches, PREG_PATTERN_ORDER);
                                for ($i = 0; $i < count($matches[0]); $i++)
                                {
                                        $convert_cmd .= $matches[1][$i] . "," . $matches[2][$i] .       " ";
                                }
                                $convert_cmd .= "\" ";
                        }
                }
                $convert_cmd = $convert_prefix . $convert_cmd .  escapeshellcmd(str_replace(" ", "\ ", $this->imagemap_filename)) ." " . escapeshellcmd($this->preview_filename);
                system($convert_cmd);
        }

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ilImagemapPreview::deleteArea	(	$	key,
		$	value
	)

Definition at line 99 of file class.ilImagemapPreview.php.

        {
                foreach ($this->areas as $areakey => $areavalue)
                {
                        if (strcmp($value, $areavalue[$key]) == 0)
                        {
                                unset($this->areas[$areakey]);
                        }
                }
                $this->areas = array_values($this->areas);
        }

ilImagemapPreview::getImagemap ( $ title )

get imagemap html code note: html code should be placed in template files

Definition at line 181 of file class.ilImagemapPreview.php.

        {
                $map = "<map name=\"$title\"> ";
                foreach ($this->areas as $area)
                {
                        $map .= "<area alt=\"" . $area["title"] . "\"  title=\"" . $area["title"] . "\" ";
                        $map .= "shape=\"" . $area["shape"] . "\" ";
                        $map .= "coords=\"" .  $area["coords"] . "\" ";
                        if ($area["href"])
                        {
                                $map .= "href=\"" . $area["href"] . "\" ";
                                if ($area["target"])
                                {
                                        $map .= "target=\"" . $area["target"] . "\" ";
                                }
                                $map .= "/>\n";
                        }
                        else
                        {
                                $map .= "nohref />\n";
                        }
                }
                $map .= "</map>";
                return $map;
        }

ilImagemapPreview::getPreviewFilename ( )

Definition at line 165 of file class.ilImagemapPreview.php.

        {
                if (is_file($this->preview_filename))
                {
                        return basename($this->preview_filename);
                }
                else
                {
                        return "";
                }
        }

ilImagemapPreview::ilImagemapPreview	(	$	imagemap_filename = `""`,
		$	preview_filename = `""`
	)

ilImagemapPreview constructor

Creates an instance of the ilImagemapPreview class

Parameters:

integer

$id The database id of a image map question object public

Definition at line 53 of file class.ilImagemapPreview.php.

References $imagemap_filename, $preview_filename, and ilUtil::ilTempnam().

        {
                $this->imagemap_filename = $imagemap_filename;
                $this->preview_filename = $preview_filename;
                if (!@is_file($this->preview_filename))
                {
                        $extension = ".jpg";
                        if (preg_match("/.*\.(png|jpg|gif|jpeg)$/", $this->imagemap_filename, $matches))
                        {
                                $extension = "." . $matches[1];
                        }
                        $this->preview_filename = ilUtil::ilTempnam() . $extension;
                }
                $this->areas = array();
                $this->linewidth_outer = 4;
                $this->linewidth_inner = 2;
        }

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