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<?php
/* vim: set expandtab sw=4 ts=4 sts=4: */
/**
* Contains PhpMyAdmin\Plugins\Schema\Eps\RelationStatsEps class
*
* @package PhpMyAdmin
*/
namespace PhpMyAdmin\Plugins\Schema\Eps;
use PhpMyAdmin\Plugins\Schema\RelationStats;
/**
* Relation preferences/statistics
*
* This class fetches the table master and foreign fields positions
* and helps in generating the Table references and then connects
* master table's master field to foreign table's foreign key
* in EPS document.
*
* @package PhpMyAdmin
* @name Relation_Stats_Eps
* @see PMA_EPS
*/
class RelationStatsEps extends RelationStats
{
/**
* The "PhpMyAdmin\Plugins\Schema\Eps\RelationStatsEps" constructor
*
* @param object $diagram The EPS diagram
* @param string $master_table The master table name
* @param string $master_field The relation field in the master table
* @param string $foreign_table The foreign table name
* @param string $foreign_field The relation field in the foreign table
*/
public function __construct(
$diagram, $master_table, $master_field, $foreign_table, $foreign_field
) {
$this->wTick = 10;
parent::__construct(
$diagram, $master_table, $master_field, $foreign_table, $foreign_field
);
$this->ySrc += 10;
$this->yDest += 10;
}
/**
* draws relation links and arrows
* shows foreign key relations
*
* @see PMA_EPS
*
* @return void
*/
public function relationDraw()
{
// draw a line like -- to foreign field
$this->diagram->line(
$this->xSrc,
$this->ySrc,
$this->xSrc + $this->srcDir * $this->wTick,
$this->ySrc,
1
);
// draw a line like -- to master field
$this->diagram->line(
$this->xDest + $this->destDir * $this->wTick,
$this->yDest,
$this->xDest,
$this->yDest,
1
);
// draw a line that connects to master field line and foreign field line
$this->diagram->line(
$this->xSrc + $this->srcDir * $this->wTick,
$this->ySrc,
$this->xDest + $this->destDir * $this->wTick,
$this->yDest,
1
);
$root2 = 2 * sqrt(2);
$this->diagram->line(
$this->xSrc + $this->srcDir * $this->wTick * 0.75,
$this->ySrc,
$this->xSrc + $this->srcDir * (0.75 - 1 / $root2) * $this->wTick,
$this->ySrc + $this->wTick / $root2,
1
);
$this->diagram->line(
$this->xSrc + $this->srcDir * $this->wTick * 0.75,
$this->ySrc,
$this->xSrc + $this->srcDir * (0.75 - 1 / $root2) * $this->wTick,
$this->ySrc - $this->wTick / $root2,
1
);
$this->diagram->line(
$this->xDest + $this->destDir * $this->wTick / 2,
$this->yDest,
$this->xDest + $this->destDir * (0.5 + 1 / $root2) * $this->wTick,
$this->yDest + $this->wTick / $root2,
1
);
$this->diagram->line(
$this->xDest + $this->destDir * $this->wTick / 2,
$this->yDest,
$this->xDest + $this->destDir * (0.5 + 1 / $root2) * $this->wTick,
$this->yDest - $this->wTick / $root2,
1
);
}
}
|