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<?php
/**
* Classes to create relation schema in EPS format.
*/
declare(strict_types=1);
namespace PhpMyAdmin\Plugins\Schema\Eps;
use PhpMyAdmin\Core;
use PhpMyAdmin\ResponseRenderer;
use function strlen;
/**
* This Class is EPS Library and
* helps in developing structure of EPS Schema Export
*
* @see https://www.php.net/manual/en/book.xmlwriter.php
*/
class Eps
{
/** @var string */
public $font = 'Arial';
/** @var int */
public $fontSize = 12;
/** @var string */
public $stringCommands;
/**
* Upon instantiation This starts writing the EPS Document.
* %!PS-Adobe-3.0 EPSF-3.0 This is the MUST first comment to include
* it shows/tells that the Post Script document is purely under
* Document Structuring Convention [DSC] and is Compliant
* Encapsulated Post Script Document
*/
public function __construct()
{
$this->stringCommands = '';
$this->stringCommands .= "%!PS-Adobe-3.0 EPSF-3.0 \n";
}
/**
* Set document title
*
* @param string $value sets the title text
*/
public function setTitle($value): void
{
$this->stringCommands .= '%%Title: ' . $value . "\n";
}
/**
* Set document author
*
* @param string $value sets the author
*/
public function setAuthor($value): void
{
$this->stringCommands .= '%%Creator: ' . $value . "\n";
}
/**
* Set document creation date
*
* @param string $value sets the date
*/
public function setDate($value): void
{
$this->stringCommands .= '%%CreationDate: ' . $value . "\n";
}
/**
* Set document orientation
*
* @param string $orientation sets the orientation
*/
public function setOrientation($orientation): void
{
$this->stringCommands .= "%%PageOrder: Ascend \n";
if ($orientation === 'L') {
$orientation = 'Landscape';
$this->stringCommands .= '%%Orientation: ' . $orientation . "\n";
} else {
$orientation = 'Portrait';
$this->stringCommands .= '%%Orientation: ' . $orientation . "\n";
}
$this->stringCommands .= "%%EndComments \n";
$this->stringCommands .= "%%Pages 1 \n";
$this->stringCommands .= "%%BoundingBox: 72 150 144 170 \n";
}
/**
* Set the font and size
*
* font can be set whenever needed in EPS
*
* @param string $value sets the font name e.g Arial
* @param int $size sets the size of the font e.g 10
*/
public function setFont(string $value, int $size): void
{
$this->font = $value;
$this->fontSize = $size;
$this->stringCommands .= '/' . $value . " findfont % Get the basic font\n";
$this->stringCommands .= ''
. $size . ' scalefont % Scale the font to ' . $size . " points\n";
$this->stringCommands .= "setfont % Make it the current font\n";
}
/**
* Get the font
*
* @return string return the font name e.g Arial
*/
public function getFont()
{
return $this->font;
}
/**
* Get the font Size
*
* @return int return the size of the font e.g 10
*/
public function getFontSize(): int
{
return $this->fontSize;
}
/**
* Draw the line
*
* drawing the lines from x,y source to x,y destination and set the
* width of the line. lines helps in showing relationships of tables
*
* @param int $x_from The x_from attribute defines the start
* left position of the element
* @param int $y_from The y_from attribute defines the start
* right position of the element
* @param int $x_to The x_to attribute defines the end
* left position of the element
* @param int $y_to The y_to attribute defines the end
* right position of the element
* @param int $lineWidth Sets the width of the line e.g 2
*/
public function line(
$x_from = 0,
$y_from = 0,
$x_to = 0,
$y_to = 0,
$lineWidth = 0
): void {
$this->stringCommands .= $lineWidth . " setlinewidth \n";
$this->stringCommands .= $x_from . ' ' . $y_from . " moveto \n";
$this->stringCommands .= $x_to . ' ' . $y_to . " lineto \n";
$this->stringCommands .= "stroke \n";
}
/**
* Draw the rectangle
*
* drawing the rectangle from x,y source to x,y destination and set the
* width of the line. rectangles drawn around the text shown of fields
*
* @param int $x_from The x_from attribute defines the start
* left position of the element
* @param int $y_from The y_from attribute defines the start
* right position of the element
* @param int $x_to The x_to attribute defines the end
* left position of the element
* @param int $y_to The y_to attribute defines the end
* right position of the element
* @param int $lineWidth Sets the width of the line e.g 2
*/
public function rect($x_from, $y_from, $x_to, $y_to, $lineWidth): void
{
$this->stringCommands .= $lineWidth . " setlinewidth \n";
$this->stringCommands .= "newpath \n";
$this->stringCommands .= $x_from . ' ' . $y_from . " moveto \n";
$this->stringCommands .= '0 ' . $y_to . " rlineto \n";
$this->stringCommands .= $x_to . " 0 rlineto \n";
$this->stringCommands .= '0 -' . $y_to . " rlineto \n";
$this->stringCommands .= "closepath \n";
$this->stringCommands .= "stroke \n";
}
/**
* Set the current point
*
* The moveto operator takes two numbers off the stack and treats
* them as x and y coordinates to which to move. The coordinates
* specified become the current point.
*
* @param int $x The x attribute defines the left position of the element
* @param int $y The y attribute defines the right position of the element
*/
public function moveTo($x, $y): void
{
$this->stringCommands .= $x . ' ' . $y . " moveto \n";
}
/**
* Output/Display the text
*
* @param string $text The string to be displayed
*/
public function show($text): void
{
$this->stringCommands .= '(' . $text . ") show \n";
}
/**
* Output the text at specified co-ordinates
*
* @param string $text String to be displayed
* @param int $x X attribute defines the left position of the element
* @param int $y Y attribute defines the right position of the element
*/
public function showXY($text, $x, $y): void
{
$this->moveTo($x, $y);
$this->show($text);
}
/**
* Ends EPS Document
*/
public function endEpsDoc(): void
{
$this->stringCommands .= "showpage \n";
}
/**
* Output EPS Document for download
*
* @param string $fileName name of the eps document
*/
public function showOutput($fileName): void
{
// if(ob_get_clean()){
//ob_end_clean();
//}
$output = $this->stringCommands;
ResponseRenderer::getInstance()
->disable();
Core::downloadHeader(
$fileName,
'image/x-eps',
strlen($output)
);
print $output;
}
}