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vendor/yiisoft/yii2-debug/models/timeline/Svg.php

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+<?php
+/**
+ * @link http://www.yiiframework.com/
+ * @copyright Copyright (c) 2008 Yii Software LLC
+ * @license http://www.yiiframework.com/license/
+ */
+
+namespace yii\debug\models\timeline;
+
+use yii\base\BaseObject;
+use yii\debug\panels\TimelinePanel;
+use yii\helpers\StringHelper;
+
+/**
+ * Svg is used to draw a graph using SVG
+ *
+ * @author Dmitriy Bashkarev <dmitriy@bashkarev.com>
+ * @since 2.0.8
+ */
+class Svg extends BaseObject
+{
+    /**
+     * @var int Max X coordinate
+     */
+    public $x = 1920;
+    /**
+     * @var int Max Y coordinate
+     */
+    public $y = 40;
+    /**
+     * @var string Stroke color
+     */
+    public $stroke = '#1e6823';
+    /**
+     * @var array Listen messages panels
+     */
+    public $listenMessages = ['log', 'profiling'];
+    /**
+     * @var array Color indicators svg graph.
+     */
+    public $gradient = [
+        10 => '#d6e685',
+        60 => '#8cc665',
+        90 => '#44a340',
+        100 => '#1e6823'
+    ];
+    /**
+     * @var string Svg template
+     */
+    public $template = '<svg width="{x}" height="{y}" viewBox="0 0 {x} {y}" preserveAspectRatio="none"><defs>{linearGradient}</defs><g><polygon points="{polygon}" fill="url(#gradient)"/><polyline points="{polyline}" fill="none" stroke="{stroke}" stroke-width="1"/></g></svg>';
+
+    /**
+     * ```php
+     * [
+     *  [x, y]
+     * ]
+     * ```
+     * @var array Each point is define by a X and a Y coordinate.
+     */
+    protected $points = [];
+    /**
+     * @var TimelinePanel
+     */
+    protected $panel;
+
+
+    /**
+     * @inheritdoc
+     */
+    public function __construct(TimelinePanel $panel, $config = [])
+    {
+        parent::__construct($config);
+        $this->panel = $panel;
+        foreach ($this->listenMessages as $panel) {
+            if (isset($this->panel->module->panels[$panel]->data['messages'])) {
+                $this->addPoints($this->panel->module->panels[$panel]->data['messages']);
+            }
+        }
+    }
+
+    /**
+     * @return string
+     */
+    public function __toString()
+    {
+        if ($this->points === []) {
+            return '';
+        }
+
+        return strtr($this->template, [
+            '{x}' => StringHelper::normalizeNumber($this->x),
+            '{y}' =>  StringHelper::normalizeNumber($this->y),
+            '{stroke}' => $this->stroke,
+            '{polygon}' => $this->polygon(),
+            '{polyline}' => $this->polyline(),
+            '{linearGradient}' => $this->linearGradient()
+        ]);
+    }
+
+    /**
+     * @return bool Has points
+     */
+    public function hasPoints()
+    {
+        return ($this->points !== []);
+    }
+
+    /**
+     * @param array $messages log messages. See [[Logger::messages]] for the structure
+     * @return int added points
+     */
+    protected function addPoints($messages)
+    {
+        $hasPoints = $this->hasPoints();
+
+        $memory = $this->panel->memory / 100; // 1 percent memory
+        $yOne = $this->y / 100; // 1 percent Y coordinate
+        $xOne = $this->panel->duration / $this->x; // 1 percent X coordinate
+
+        $i = 0;
+        foreach ($messages as $message) {
+            if (empty($message[5])) {
+                break;
+            }
+            ++$i;
+            $this->points[] = [
+                ($message[3] * 1000 - $this->panel->start) / $xOne,
+                $this->y - ($message[5] / $memory * $yOne),
+            ];
+        }
+
+        if ($hasPoints && $i) {
+            usort($this->points, function ($a, $b) {
+                return ($a[0] < $b[0]) ? -1 : 1;
+            });
+        }
+        return $i;
+    }
+
+    /**
+     * @return string Points attribute for polygon path
+     */
+    protected function polygon()
+    {
+        $str = "0 $this->y ";
+        foreach ($this->points as $point) {
+            list($x, $y) = $point;
+            $str .= "{$x} {$y} ";
+        }
+        $str .= $this->x - 0.001 . " {$y} {$this->x} {$this->y}";
+        return StringHelper::normalizeNumber($str);
+    }
+
+    /**
+     * @return string Points attribute for polyline path
+     */
+    protected function polyline()
+    {
+        $str = "0 $this->y ";
+        foreach ($this->points as $point) {
+            list($x, $y) = $point;
+            $str .= "{$x} {$y} ";
+        }
+        $str .= "$this->x {$y}";
+        return StringHelper::normalizeNumber($str);
+    }
+
+    /**
+     * @return string
+     */
+    protected function linearGradient()
+    {
+        $gradient = '<linearGradient id="gradient" x1="0" x2="0" y1="1" y2="0">';
+        foreach ($this->gradient as $percent => $color) {
+            $gradient .= '<stop offset="' . StringHelper::normalizeNumber($percent) . '%" stop-color="' . $color . '"></stop>';
+        }
+        return $gradient . '</linearGradient>';
+    }
+
+}