From 3e02d5aff85babc3ffbfcf52313f2108e313aa23 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Sat, 13 Apr 2024 13:46:43 +0200
Subject: Adding upstream version 2.12.1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 library/Icinga/Chart/Graph/LineGraph.php | 202 +++++++++++++++++++++++++++++++
 1 file changed, 202 insertions(+)
 create mode 100644 library/Icinga/Chart/Graph/LineGraph.php

(limited to 'library/Icinga/Chart/Graph/LineGraph.php')

diff --git a/library/Icinga/Chart/Graph/LineGraph.php b/library/Icinga/Chart/Graph/LineGraph.php
new file mode 100644
index 0000000..21f930a
--- /dev/null
+++ b/library/Icinga/Chart/Graph/LineGraph.php
@@ -0,0 +1,202 @@
+<?php
+/* Icinga Web 2 | (c) 2013 Icinga Development Team | GPLv2+ */
+
+
+namespace Icinga\Chart\Graph;
+
+use DOMElement;
+use Icinga\Chart\Primitive\Drawable;
+use Icinga\Chart\Primitive\Path;
+use Icinga\Chart\Primitive\Circle;
+use Icinga\Chart\Primitive\Styleable;
+use Icinga\Chart\Render\RenderContext;
+
+/**
+ * LineGraph implementation for drawing a set of datapoints as
+ * a connected path
+ */
+class LineGraph extends Styleable implements Drawable
+{
+    /**
+     * The dataset to use
+     *
+     * @var array
+     */
+    private $dataset;
+
+    /**
+     * True to show dots for each datapoint
+     *
+     * @var bool
+     */
+    private $showDataPoints = false;
+
+    /**
+     * When true, the path will be discrete, i.e. showing hard steps instead of a direct line
+     *
+     * @var bool
+     */
+    private $isDiscrete = false;
+
+    /**
+     * The tooltips
+     *
+     * @var
+     */
+    private $tooltips;
+
+    /** @var array */
+    private $graphs;
+
+    /** @var int */
+    private $order;
+
+    /**
+     * The default stroke width
+     * @var int
+     */
+    public $strokeWidth = 5;
+
+    /**
+     * The size of the displayed dots
+     *
+     * @var int
+     */
+    public $dotWith = 0;
+
+    /**
+     * Create a new LineGraph displaying the given dataset
+     *
+     * @param array $dataset An array of [x, y] arrays to display
+     */
+    public function __construct(
+        array $dataset,
+        array &$graphs,
+        $order,
+        array $tooltips = null
+    ) {
+        usort($dataset, array($this, 'sortByX'));
+        $this->dataset = $dataset;
+        $this->graphs = $graphs;
+
+        $this->tooltips = $tooltips;
+        $ts = [];
+        foreach ($this->tooltips as $value) {
+            $ts[] = $value;
+        }
+        $this->tooltips = $ts;
+        $this->order = $order;
+    }
+
+    /**
+     * Set datapoints to be emphased via dots
+     *
+     * @param bool $bool True to enable datapoints, otherwise false
+     */
+    public function setShowDataPoints($bool)
+    {
+        $this->showDataPoints = $bool;
+    }
+
+    /**
+     * Sort the daset by the xaxis
+     *
+     * @param   array $v1
+     * @param   array $v2
+     * @return  int
+     */
+    private function sortByX(array $v1, array $v2)
+    {
+        if ($v1[0] === $v2[0]) {
+            return 0;
+        }
+        return ($v1[0] < $v2[0]) ? -1 : 1;
+    }
+
+    /**
+     * Configure this style
+     *
+     * @param array $cfg The configuration as given in the drawLine call
+     */
+    public function setStyleFromConfig(array $cfg)
+    {
+        $fill = false;
+        foreach ($cfg as $elem => $value) {
+            if ($elem === 'color') {
+                $this->setStrokeColor($value);
+            } elseif ($elem === 'width') {
+                $this->setStrokeWidth($value);
+            } elseif ($elem === 'showPoints') {
+                $this->setShowDataPoints($value);
+            } elseif ($elem === 'fill') {
+                $fill = $value;
+            } elseif ($elem === 'discrete') {
+                $this->isDiscrete = true;
+            }
+        }
+        if ($fill) {
+            $this->setFill($this->strokeColor);
+            $this->setStrokeColor('black');
+        }
+    }
+
+    /**
+     * Render this BarChart
+     *
+     * @param   RenderContext   $ctx    The rendering context to use for drawing
+     *
+     * @return  DOMElement      $dom    Element
+     */
+    public function toSvg(RenderContext $ctx)
+    {
+        $path = new Path($this->dataset);
+        if ($this->isDiscrete) {
+            $path->setDiscrete(true);
+        }
+        $path->setStrokeColor($this->strokeColor);
+        $path->setStrokeWidth($this->strokeWidth);
+
+        $path->setAttribute('data-icinga-graph-type', 'line');
+        if ($this->fill !== 'none') {
+            $firstX = $this->dataset[0][0];
+            $lastX = $this->dataset[count($this->dataset)-1][0];
+            $path->prepend(array($firstX, 100))
+                ->append(array($lastX, 100));
+            $path->setFill($this->fill);
+        }
+
+        $path->setAdditionalStyle(['clip-path' => 'url(#clip)']);
+        $path->setId($this->id ?? uniqid('line-graph-'));
+        $group = $path->toSvg($ctx);
+
+        foreach ($this->dataset as $x => $point) {
+            if ($this->showDataPoints === true) {
+                $dot = new Circle($point[0], $point[1], $this->dotWith);
+                $dot->setFill($this->strokeColor);
+                $group->appendChild($dot->toSvg($ctx));
+            }
+
+            // Draw invisible circle for tooltip hovering
+            if (isset($this->tooltips[$x])) {
+                $invisible = new Circle($point[0], $point[1], 20);
+                $invisible->setFill($this->strokeColor);
+                $invisible->setAdditionalStyle(['opacity' => '0.0']);
+                $data = array(
+                    'label' => isset($this->graphs[$this->order]['label']) ?
+                            strtolower($this->graphs[$this->order]['label']) : '',
+                    'color' => isset($this->graphs[$this->order]['color']) ?
+                            strtolower($this->graphs[$this->order]['color']) : '#fff'
+                );
+                $format = isset($this->graphs[$this->order]['tooltip'])
+                    ? $this->graphs[$this->order]['tooltip'] : null;
+                $title = $ctx->getDocument()->createElement('title');
+                $title->textContent = $this->tooltips[$x]->renderNoHtml($this->order, $data, $format);
+                $invisibleRendered = $invisible->toSvg($ctx);
+                $invisibleRendered->appendChild($title);
+                $group->appendChild($invisibleRendered);
+            }
+        }
+
+        return $group;
+    }
+}
-- 
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