ilImagemapPreview Class Reference

This file is part of ILIAS, a powerful learning management system published by ILIAS open source e-Learning e.V. More...

Collaboration diagram for ilImagemapPreview:

Public Member Functions
	__construct ($imagemap_filename="")
	ilImagemapPreview constructor More...
	getAreaCount ()
	getPointCount ()
	addArea ( $index, $shape, $coords, $title="", $href="", $target="", $visible=true, $linecolor="red", $bordercolor="white", $fillcolor="#FFFFFFA0")
	addPoint ( $index, $coords, $visible=true, $linecolor="red", $bordercolor="white", $fillcolor="#FFFFFFA0")
	getAreaIdent ()
	createPreview ()
	getPreviewFilename (string $image_path, string $base_file_name)
	getImagemap ($title)
	get imagemap html code note: html code should be placed in template files More...

Static Public Member Functions
static	escapeShellCmd ($a_arg)
static	execQuoted ($cmd, $args=null)

Data Fields
	$imagemap_filename
	$preview_filename
	$areas
	$points
	$linewidth_outer
	$linewidth_inner
	$lng

Private Attributes
ilGlobalTemplateInterface	$main_tpl

Detailed Description

This file is part of ILIAS, a powerful learning management system published by ILIAS open source e-Learning e.V.

ILIAS is licensed with the GPL-3.0, see https://www.gnu.org/licenses/gpl-3.0.en.html You should have received a copy of said license along with the source code, too.

If this is not the case or you just want to try ILIAS, you'll find us at: https://www.ilias.de https://github.com/ILIAS-eLearning Image map image preview creator

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

Author

Helmut Schottmüller helmu.nosp@m.t.sc.nosp@m.hottm.nosp@m.uell.nosp@m.er@ma.nosp@m.c.co.nosp@m.m

Version

$Id$ \

Definition at line 29 of file class.ilImagemapPreview.php.

Constructor & Destructor Documentation

__construct()

ilImagemapPreview::__construct

(

$imagemap_filename = ""

)

ilImagemapPreview constructor

Creates an instance of the ilImagemapPreview class

Parameters

integer

$id

The database id of a image map question object @access public

Definition at line 48 of file class.ilImagemapPreview.php.

    {
        global $DIC;
        $this->main_tpl = $DIC->ui()->mainTemplate();
        $lng = $DIC['lng'];
        $this->lng = &$lng;
        $this->imagemap_filename = $imagemap_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 = ilFileUtils::ilTempnam() . $extension;
        }
        $this->areas = [];
        $this->points = [];
        $this->linewidth_outer = 4;
        $this->linewidth_inner = 2;
    }

References $DIC, $imagemap_filename, $lng, ilFileUtils\ilTempnam(), and ILIAS\Repository\lng().

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Member Function Documentation

addArea()

ilImagemapPreview::addArea	(		$index,
			$shape,
			$coords,
			$title = "",
			$href = "",
			$target = "",
			$visible = true,
			$linecolor = "red",
			$bordercolor = "white",
			$fillcolor = "#FFFFFFA0"
	)

Definition at line 79 of file class.ilImagemapPreview.php.

     : void {
        if (ini_get("safe_mode")) {
            if ((strpos($fillcolor, "#") !== false) || (strpos($fillcolor, "rgb") !== false)) {
                $fillcolor = str_replace("\"", "", $fillcolor);
            }
        }
        $this->areas[$index] = [
            "shape" => "$shape",
            "coords" => "$coords",
            "title" => htmlspecialchars($title),
            "href" => "$href",
            "target" => "$target",
            "linecolor" => '"' . $linecolor . '"',
            "fillcolor" => '"' . $fillcolor . '"',
            "bordercolor" => '"' . $bordercolor . '"',
            "visible" => (int) $visible
        ];
    }

addPoint()

ilImagemapPreview::addPoint	(		$index,
			$coords,
			$visible = true,
			$linecolor = "red",
			$bordercolor = "white",
			$fillcolor = "#FFFFFFA0"
	)

Definition at line 109 of file class.ilImagemapPreview.php.

     : void {
        $this->points[$index] = [
            "coords" => "$coords",
            "linecolor" => '"' . $linecolor . '"',
            "fillcolor" => '"' . $fillcolor . '"',
            "bordercolor" => '"' . $bordercolor . '"',
            "visible" => (int) $visible
        ];
    }

createPreview()

ilImagemapPreview::createPreview

(

)

Definition at line 142 of file class.ilImagemapPreview.php.

                                   : void
    {
        if (count($this->areas) + count($this->points) == 0) {
            return;
        }
        $convert_cmd = "-quality 100 ";
        foreach ($this->points as $point) {
            if ($point["visible"]) {
                preg_match("/(\d+)\s*,\s*(\d+)/", $point["coords"], $matches);
                $x = $matches[1];
                $y = $matches[2];
                $r = 6;
                // draw a circle at the point
                $convert_cmd .= "-stroke " . $point["bordercolor"] . " -fill " . $point["fillcolor"] . " -strokewidth $this->linewidth_outer -draw \"line " .
                ($x - $r) . "," . ($y - $r) . " " . ($x + $r) . "," . ($y + $r) . "\" " .
                "-stroke " . $point["bordercolor"] . " -fill " . $point["fillcolor"] . " -strokewidth $this->linewidth_outer -draw \"line " .
                ($x + $r) . "," . ($y - $r) . " " . ($x - $r) . "," . ($y + $r) . "\" " .
                "-stroke " . $point["linecolor"] . " -fill " . $point["fillcolor"] . " -strokewidth $this->linewidth_inner -draw \"line " .
                ($x - $r) . "," . ($y - $r) . " " . ($x + $r) . "," . ($y + $r) . "\" " .
                "-stroke " . $point["linecolor"] . " -fill " . $point["fillcolor"] . " -strokewidth $this->linewidth_inner -draw \"line " .
                ($x + $r) . "," . ($y - $r) . " " . ($x - $r) . "," . ($y + $r) . "\" ";
            }
        }
        foreach ($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) . "," . $y1 . "\" ";
            } elseif ($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) . "," . $y . "\" ";
            } elseif ($area["visible"] and strcmp(strtolower($area["shape"]), "poly") == 0) {
                $obj = "polygon";
                // draw a polygon around the selection
                preg_match_all("/(\d+)\s*,\s*(\d+)/", $area["coords"], $matches, PREG_PATTERN_ORDER);
                if (count($matches[0]) == 2) {
                    $obj = "line";
                }
                $convert_cmd .= "-stroke " . $area["bordercolor"] . " -fill " . $area["fillcolor"] . " -strokewidth $this->linewidth_outer -draw \"$obj ";
                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 $this->linewidth_inner -draw \"$obj ";
                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 .= "\" ";
            }
        }
 
        $source = $this->escapeShellCmd($this->imagemap_filename);
        $target = $this->escapeShellCmd($this->preview_filename);
        $convert_cmd = $this->escapeShellCmd($convert_cmd);
        $convert_cmd = preg_replace('/\\\\(#([a-fA-F0-9]{3}|[a-fA-F0-9]{6}|[a-fA-F0-9]{8}))/', '${1}', $convert_cmd);
        $convert_cmd = $source . "[0] " . $convert_cmd . " " . $target;
        $this->execQuoted(PATH_TO_CONVERT, $convert_cmd);
    }

escapeShellCmd()

static ilImagemapPreview::escapeShellCmd (   $a_arg )

static

Definition at line 216 of file class.ilImagemapPreview.php.

    {
        if (ini_get('safe_mode') == 1) {
            return $a_arg;
        }
        setlocale(LC_CTYPE, "UTF8", "en_US.UTF-8"); // fix for PHP escapeshellcmd bug. See: http://bugs.php.net/bug.php?id=45132
        return escapeshellcmd($a_arg);
    }

execQuoted()

static ilImagemapPreview::execQuoted (   $cmd,   $args = null  )

static

Definition at line 225 of file class.ilImagemapPreview.php.

    {
        global $DIC;
 
        if (ilUtil::isWindows() && strpos($cmd, " ") !== false && substr($cmd, 0, 1) !== '"') {
            $cmd = '"' . $cmd . '"';
            if ($args) {
                $cmd .= " " . $args;
            }
        } elseif ($args) {
            $cmd .= " " . $args;
        }
        exec($cmd, $arr);
 
        $DIC->logger()->root()->debug("ilUtil::execQuoted: " . $cmd . ".");
 
        return $arr;
    }

References $DIC, and ilUtil\isWindows().

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getAreaCount()

ilImagemapPreview::getAreaCount

(

)

Definition at line 69 of file class.ilImagemapPreview.php.

                                  : int
    {
        return count($this->areas);
    }

getAreaIdent()

ilImagemapPreview::getAreaIdent

(

)

Definition at line 126 of file class.ilImagemapPreview.php.

                                  : string
    {
        if (count($this->areas) + count($this->points) > 0) {
            $arr = array_merge(array_keys($this->areas), array_keys($this->points));
            sort($arr, SORT_NUMERIC);
 
            $inner = join("_", $arr);
            if (strlen($inner) > 32) {
                $inner = md5($inner);
            }
            return "preview_" . $inner . "_";
        } else {
            return "";
        }
    }

References ILIAS\UI\examples\Symbol\Glyph\Sort\sort().

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getImagemap()

ilImagemapPreview::getImagemap

(

$title

)

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

Definition at line 273 of file class.ilImagemapPreview.php.

                                       : string
    {
        $map = "<map name=\"$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;
    }

getPointCount()

ilImagemapPreview::getPointCount

(

)

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

                                   : int
    {
        return count($this->points);
    }

getPreviewFilename()

ilImagemapPreview::getPreviewFilename	(	string	$image_path,
		string	$base_file_name
	)

Definition at line 244 of file class.ilImagemapPreview.php.

     : string {
        if (count($this->areas) + count($this->points) < 1) {
            return $base_file_name;
        }
 
        $preview_file = $this->preview_filename;
        if (!is_file($preview_file)) {
            $this->main_tpl->setOnScreenMessage('info', $this->lng->txt("qpl_imagemap_preview_missing"));
            return $base_file_name;
        }
 
        $ident = $this->getAreaIdent();
        $requested_preview_file = $image_path . $ident . $base_file_name;
        if ((!is_file($requested_preview_file)
            || md5_file($requested_preview_file) !== md5_file($preview_file))
            && $ident !== '') {
            copy($preview_file, $requested_preview_file);
        }
        unlink($preview_file);
        return basename($requested_preview_file);
    }

Field Documentation

$areas

ilImagemapPreview::$areas

Definition at line 33 of file class.ilImagemapPreview.php.

$imagemap_filename

ilImagemapPreview::$imagemap_filename

Definition at line 31 of file class.ilImagemapPreview.php.

Referenced by __construct().

$linewidth_inner

ilImagemapPreview::$linewidth_inner

Definition at line 36 of file class.ilImagemapPreview.php.

$linewidth_outer

ilImagemapPreview::$linewidth_outer

Definition at line 35 of file class.ilImagemapPreview.php.

$lng

ilImagemapPreview::$lng

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

Referenced by __construct().

$main_tpl

ilGlobalTemplateInterface ilImagemapPreview::$main_tpl

private

Definition at line 38 of file class.ilImagemapPreview.php.

$points

ilImagemapPreview::$points

Definition at line 34 of file class.ilImagemapPreview.php.

$preview_filename

ilImagemapPreview::$preview_filename

Definition at line 32 of file class.ilImagemapPreview.php.

---

The documentation for this class was generated from the following file:

• components/ILIAS/TestQuestionPool/classes/class.ilImagemapPreview.php