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138 lines
4.0 KiB
138 lines
4.0 KiB
<?php declare(strict_types = 0);
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/*
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** Zabbix
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** Copyright (C) 2001-2023 Zabbix SIA
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**
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** This program is free software; you can redistribute it and/or modify
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** it under the terms of the GNU General Public License as published by
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** the Free Software Foundation; either version 2 of the License, or
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** (at your option) any later version.
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**
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** This program is distributed in the hope that it will be useful,
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** but WITHOUT ANY WARRANTY; without even the implied warranty of
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** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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** GNU General Public License for more details.
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**
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** You should have received a copy of the GNU General Public License
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** along with this program; if not, write to the Free Software
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** Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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**/
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class CSvgGraphLegend extends CDiv {
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// Legend single line height is 18px. Value should be synchronized with $svg-legend-line-height in scss.
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public const LINE_HEIGHT = 18;
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private const ZBX_STYLE_CLASS = 'svg-graph-legend';
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private const ZBX_STYLE_GRAPH_LEGEND_STATISTIC = 'svg-graph-legend-statistic';
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private const ZBX_STYLE_GRAPH_LEGEND_HEADER = 'svg-graph-legend-header';
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private const ZBX_STYLE_GRAPH_LEGEND_ITEM = 'svg-graph-legend-item';
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private const ZBX_STYLE_GRAPH_LEGEND_NO_DATA = 'svg-graph-legend-no-data';
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private $legend_items;
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private $columns_count = 0;
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private $lines_count = 0;
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private $show_statistic = false;
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/**
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* @param array $legend_items
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* @param string $legend_items[]['name']
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* @param string $legend_items[]['color']
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* @param string $legend_items[]['units']
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* @param string $legend_items[]['min']
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* @param string $legend_items[]['avg']
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* @param string $legend_items[]['max']
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*/
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public function __construct(array $legend_items) {
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parent::__construct();
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$this->legend_items = $legend_items;
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}
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public function setColumnsCount(int $columns_count): self {
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$this->columns_count = $columns_count;
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return $this;
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}
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public function getLinesCount(): int {
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return $this->lines_count + ($this->show_statistic ? 1 : 0);
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}
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public function setLinesCount(int $lines_count): self {
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$this->lines_count = $lines_count;
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return $this;
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}
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public function showStatistic(int $show_statistic): self {
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$this->show_statistic = ($show_statistic == SVG_GRAPH_LEGEND_STATISTIC_ON);
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return $this;
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}
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private function draw(): void {
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if ($this->show_statistic) {
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$this->addItem([
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(new CDiv(_('min')))->addClass(self::ZBX_STYLE_GRAPH_LEGEND_HEADER),
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(new CDiv(_('avg')))->addClass(self::ZBX_STYLE_GRAPH_LEGEND_HEADER),
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(new CDiv(_('max')))->addClass(self::ZBX_STYLE_GRAPH_LEGEND_HEADER)
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]);
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}
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foreach ($this->legend_items as $item) {
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// border-color is for legend element ::before pseudo element.
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$this->addItem(
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(new CDiv(new CSpan($item['name'])))
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->addClass(self::ZBX_STYLE_GRAPH_LEGEND_ITEM)
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->setAttribute('style', '--color: '.$item['color'])
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);
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if ($this->show_statistic) {
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if (array_key_exists('units', $item)) {
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$this->addItem([
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new CDiv(convertUnits([
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'value' => $item['min'],
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'units' => $item['units'],
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'convert' => ITEM_CONVERT_NO_UNITS
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])),
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new CDiv(convertUnits([
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'value' => $item['avg'],
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'units' => $item['units'],
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'convert' => ITEM_CONVERT_NO_UNITS
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])),
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new CDiv(convertUnits([
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'value' => $item['max'],
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'units' => $item['units'],
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'convert' => ITEM_CONVERT_NO_UNITS
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]))
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]);
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}
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else {
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$this->addItem(
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(new CDiv('['._('no data').']'))->addClass(self::ZBX_STYLE_GRAPH_LEGEND_NO_DATA)
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);
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}
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}
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}
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}
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public function toString($destroy = true): string {
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$this
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->addClass(self::ZBX_STYLE_CLASS)
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->addClass($this->show_statistic ? self::ZBX_STYLE_GRAPH_LEGEND_STATISTIC : null)
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->addStyle('--lines: '.$this->getLinesCount().';');
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if (!$this->show_statistic) {
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$this->addStyle('--columns: '. min($this->columns_count, count($this->legend_items)).';');
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}
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$this->draw();
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return parent::toString($destroy);
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}
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}
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