147 lines
4.3 KiB
PHP
147 lines
4.3 KiB
PHP
<?php
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/**
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* Contains PhpMyAdmin\Plugins\Schema\Pdf\RelationStatsPdf class
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*/
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declare(strict_types=1);
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namespace PhpMyAdmin\Plugins\Schema\Pdf;
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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 PDF document.
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*
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* @see Schema\Pdf::setDrawColor
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* @see Schema\Pdf::setLineWidthScale
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* @see Pdf::lineScale
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*/
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class RelationStatsPdf extends RelationStats
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{
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/**
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* @param Pdf $diagram The PDF 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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$this->wTick = 5;
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parent::__construct($diagram, $master_table, $master_field, $foreign_table, $foreign_field);
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}
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/**
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* draws relation links and arrows shows foreign key relations
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*
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* @see Pdf
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*
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* @param bool $showColor Whether to use one color per relation or not
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* @param int $i The id of the link to draw
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*/
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public function relationDraw($showColor, $i): void
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{
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if ($showColor) {
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$d = $i % 6;
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$j = ($i - $d) / 6;
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$j %= 4;
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$j++;
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$case = [
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[
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1,
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0,
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0,
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],
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[
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0,
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1,
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0,
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],
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[
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0,
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0,
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1,
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],
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[
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1,
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1,
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0,
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],
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[
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1,
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0,
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1,
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],
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[
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0,
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1,
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1,
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],
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];
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[$a, $b, $c] = $case[$d];
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$e = 1 - ($j - 1) / 6;
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$this->diagram->setDrawColor($a * 255 * $e, $b * 255 * $e, $c * 255 * $e);
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} else {
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$this->diagram->setDrawColor(0);
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}
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$this->diagram->setLineWidthScale(0.2);
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$this->diagram->lineScale($this->xSrc, $this->ySrc, $this->xSrc + $this->srcDir * $this->wTick, $this->ySrc);
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$this->diagram->lineScale(
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$this->xDest + $this->destDir * $this->wTick,
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$this->yDest,
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$this->xDest,
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$this->yDest
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);
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$this->diagram->setLineWidthScale(0.1);
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$this->diagram->lineScale(
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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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);
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/*
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* Draws arrows ->
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*/
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$root2 = 2 * sqrt(2);
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$this->diagram->lineScale(
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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 / $root2
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);
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$this->diagram->lineScale(
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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 / $root2
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);
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$this->diagram->lineScale(
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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 / $root2
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);
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$this->diagram->lineScale(
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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 / $root2
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);
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$this->diagram->setDrawColor(0);
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}
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}
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