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.
---
 .../leaflet-elevation/src/handlers/cadence.js      | 54 ++++++++++++++++++++++
 1 file changed, 54 insertions(+)
 create mode 100644 assets/static/vendor/leaflet-elevation/src/handlers/cadence.js

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

diff --git a/assets/static/vendor/leaflet-elevation/src/handlers/cadence.js b/assets/static/vendor/leaflet-elevation/src/handlers/cadence.js
new file mode 100644
index 0000000..0ad7704
--- /dev/null
+++ b/assets/static/vendor/leaflet-elevation/src/handlers/cadence.js
@@ -0,0 +1,54 @@
+export function Cadence() {
+
+    const _ = L.Control.Elevation.Utils;
+
+    return {
+        name: 'cadence',    // <-- Your custom option name (eg. "cadence: true")
+        unit: 'rpm',
+        meta: 'cad',        // <-- point.meta.cad
+        coordinateProperties: ["cads", "cadences", "cad", "cadence"], // List of GPX Extensions ("coordinateProperties") to be handled by "@tmcw/toGeoJSON"
+        pointToAttr: (point, i) => (point.cad ?? point.meta.cad ?? point.prev('cadence')) || 0,
+		stats: { max: _.iMax, min: _.iMin, avg: _.iAvg },
+        scale: {
+            axis       : "y",
+            position   : "right",
+            scale      : { min: -1, max: +1 },
+            tickPadding: 16,
+            labelX     : 25,
+            labelY     : -8,
+        },
+        path: {
+            label        : 'RPM',
+            yAttr        : 'cadence',
+            scaleX       : 'distance',
+            scaleY       : 'cadence',
+            color        : '#FFF',
+            strokeColor  : 'blue',
+            strokeOpacity: "0.85",
+            fillOpacity  : "0.1",
+        },
+        tooltip: {
+            name: 'cadence',
+            chart: (item) => L._("cad: ") + item.cadence + " " +  'rpm',
+            marker: (item) => Math.round(item.cadence) + " "  + 'rpm',
+            order: 1
+        },
+        summary: {
+            "minrpm": {
+                label: "Min RPM: ",
+                value: (track, unit) =>  Math.round(track.cadence_min || 0) + '&nbsp;' + unit,
+                // order: 30
+            },
+            "maxrpm": {
+                label: "Max RPM: ",
+                value: (track, unit) => Math.round(track.cadence_max || 0) + '&nbsp;' + unit,
+                // order: 30
+            },
+            "avgrpm": {
+                label: "Avg RPM: ",
+                value: (track, unit) => Math.round(track.cadence_avg || 0) + '&nbsp;' + unit,
+                // order: 20
+            },
+        }
+    };
+}
\ No newline at end of file
-- 
cgit v1.3.1