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