Zabbix

<?php declare(strict_types = 0);

/*

** Copyright (C) 2001-2025 Zabbix SIA

**

** This program is free software: you can redistribute it and/or modify it under the terms of

** the GNU Affero General Public License as published by the Free Software Foundation, version 3.

**

** This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;

** without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

** See the GNU Affero General Public License for more details.

**

** You should have received a copy of the GNU Affero General Public License along with this program.

** If not, see <https://www.gnu.org/licenses/>.

**/

​

​

class CSvgGraphSimpleTrigger extends CSvgGroup {

​

    private const LABEL_FONT_SIZE = 10;

    private const LABEL_MARGIN = 4;

​

    private const ZBX_STYLE_CLASS = 'svg-graph-simple-trigger';

​

    private $color;

​

    private $index;

    private $side;

​

    private $constant;

    private $description;

    private $value;

    private $min;

    private $max;

​

    public function __construct($constant, $description, $value, $min, $max) {

        parent::__construct();

​

        $this->constant = $constant;

        $this->description = $description;

        $this->value = $value;

        $this->min = $min;

        $this->max = $max;

    }

​

    public function setColor(string $color): CSvgGraphSimpleTrigger {

        $this->color = $color;

​

        return $this;

    }

​

    public function setIndex(int $index): CSvgGraphSimpleTrigger {

        $this->index = $index;

​

        return $this;

    }

​

    public function setSide(int $side): CSvgGraphSimpleTrigger {

        $this->side = $side;

​

        return $this;

    }

​

    public function makeStyles(): array {

        return [

            '.'.self::ZBX_STYLE_CLASS.'-'.$this->index.'-'.$this->side.' line' => [

                'stroke' => $this->color,

                'stroke-width' => '2px',

                'stroke-dasharray' => 5

            ],

            '.'.self::ZBX_STYLE_CLASS.'-'.$this->index.'-'.$this->side.' text' => [

                'font-size' => self::LABEL_FONT_SIZE.'px',

                'fill' => $this->color

            ]

        ];

    }

​

    private function draw(): void {

        $total = $this->max - $this->min;

​

        if ($total == INF) {

            $total = $this->max / 10 - $this->min / 10;

            $fraction = $this->value / 10 - $this->min / 10;

        }

        else {

            $fraction = $this->value - $this->min;

        }

​

        $y = $this->height + $this->y - CMathHelper::safeMul([

            $this->height, $fraction, 1 / $total

        ]);

        $label_x = ($this->side == GRAPH_YAXIS_SIDE_RIGHT)