From 1fe1d13c600b7dfe421b3b99b833b7d5d1232724 Mon Sep 17 00:00:00 2001
From: Dennis Fink
Date: Thu, 23 Jul 2026 00:18:21 +0200
Subject: Add GPX trail maps to blog posts

This adds a trail flow block so posts can include attached GPX files as
interactive maps with route display, elevation charts, activity
summaries, and start/finish markers.

The trail assets are loaded only when needed, keeping the shared
templates clean while vendoring the Leaflet dependencies required for
offline, self-hosted map rendering.
---
 .../vendor/leaflet-elevation/src/handlers/speed.js | 66 ++++++++++++++++++++++
 1 file changed, 66 insertions(+)
 create mode 100644 assets/static/vendor/leaflet-elevation/src/handlers/speed.js

(limited to 'assets/static/vendor/leaflet-elevation/src/handlers/speed.js')

diff --git a/assets/static/vendor/leaflet-elevation/src/handlers/speed.js b/assets/static/vendor/leaflet-elevation/src/handlers/speed.js
new file mode 100644
index 0000000..534b340
--- /dev/null
+++ b/assets/static/vendor/leaflet-elevation/src/handlers/speed.js
@@ -0,0 +1,66 @@
+export function Speed() {
+
+	const _ = L.Control.Elevation.Utils;
+
+	let opts = this.options;
+	let speed = {};
+
+	speed.label      = opts.speedLabel  || L._(opts.imperial ? 'mph' : 'km/h');
+	opts.speedFactor = opts.speedFactor || 1;
+
+	return {
+		name: 'speed',
+		required: (this.options.acceleration),
+		unit: speed.label,
+		deltaMax: this.options.speedDeltaMax,
+		clampRange: this.options.speedRange,
+		decimals: 2,
+		pointToAttr: (_, i) => {
+			let dx   = (this._data[i].dist - this._data[i > 0 ? i - 1 : i].dist) * 1000;
+			let dt   = this._data[i].time - this._data[ i > 0 ? i - 1 : i].time;
+			return dt > 0 ? Math.abs((dx / dt) * opts.timeFactor) * opts.speedFactor : NaN;
+		},
+		stats: { max: _.iMax, min: _.iMin, avg: _.iAvg },
+		scale : (this.options.speed && this.options.speed != "summary") && {
+			axis       : "y",
+			position   : "right",
+			scale      : { min : 0, max : +1 },
+			tickPadding: 16,
+			labelX     : 25,
+			labelY     : -8,
+		},
+		path: (this.options.speed && this.options.speed != "summary") && {
+			// name         : 'speed',
+			label        : 'Speed',
+			yAttr        : "speed",
+			scaleX       : 'distance',
+			scaleY       : 'speed',
+			color        : '#03ffff',
+			strokeColor  : '#000',
+			strokeOpacity: "0.5",
+			fillOpacity  : "0.25",
+		},
+		tooltip: (this.options.speed) && {
+			chart: (item) => L._('v: ') + item.speed + " " + speed.label,
+			marker: (item) => Math.round(item.speed) + " " + speed.label,
+			order: 50,
+		},
+		summary: (this.options.speed) && {
+			"minspeed"  : {
+				label: "Min Speed: ",
+				value: (track, unit) => Math.round(track.speed_min || 0) + ' ' + unit,
+				order: 51
+			},
+			"maxspeed"  : {
+				label: "Max Speed: ",
+				value: (track, unit) => Math.round(track.speed_max || 0) + ' ' + unit,
+				order: 51
+			},
+			"avgspeed": {
+				label: "Avg Speed: ",
+				value: (track, unit) => Math.round(track.speed_avg || 0) + ' ' + unit,
+				order: 52
+			},
+		}
+	};
+}
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