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.

1 files changed, 88 insertions, 0 deletions

diff --git a/assets/static/vendor/leaflet-elevation/src/options.js b/assets/static/vendor/leaflet-elevation/src/options.js
new file mode 100644
index 0000000..5923163
--- /dev/null
+++ b/assets/static/vendor/leaflet-elevation/src/options.js
@@ -0,0 +1,88 @@
+import * as _ from './utils';
+
+export var Options = {
+	autofitBounds: true,
+	autohide: false,
+	autohideMarker: true,
+	almostover: true,
+	altitude: true,
+	closeBtn: true,
+	collapsed: false,
+	detached: true,
+	distance: true,
+	distanceMarkers: { lazy: true, distance: true, direction: true },
+	dragging: !L.Browser.mobile,
+	downloadLink: 'link',
+	elevationDiv: "#elevation-div",
+	edgeScale: { bar: true, icon: false, coords: false },
+	followMarker: true,
+	imperial: false,
+	legend: true,
+	handlers: ["Distance", "Time", "Altitude", "Slope", "Speed", "Acceleration"],
+	hotline: 'elevation',
+	marker: 'elevation-line',
+	markerIcon: L.divIcon({
+		className: 'elevation-position-marker',
+		html: '<i class="elevation-position-icon"></i>',
+		iconSize: [32, 32],
+		iconAnchor: [16, 16],
+	}),
+	position: "topright",
+	polyline: {
+		className: 'elevation-polyline',
+		color: '#000',
+		opacity: 0.75,
+		weight: 5,
+		lineCap: 'round'
+	},
+	polylineSegments: {
+		className: 'elevation-polyline-segments',
+		color: '#F00',
+		interactive: false,
+	},
+	preferCanvas: false,
+	reverseCoords: false,
+	ruler: true,
+	theme: "lightblue-theme",
+	summary: 'inline',
+	slope: false,
+	speed: false,
+	time: true,
+	timeFactor: 3600,
+	timestamps: false,
+	trkStart: { className: 'start-marker', radius: 6, weight: 2, color: '#fff', fillColor: '#00d800', fillOpacity: 1, interactive: false },
+	trkEnd: { className: 'end-marker', radius: 6, weight: 2, color: '#fff', fillColor: '#ff0606', fillOpacity: 1, interactive: false },
+	waypoints: true,
+	wptIcons: {
+		'': L.divIcon({
+			className: 'elevation-waypoint-marker',
+			html: '<i class="elevation-waypoint-icon default"></i>',
+			iconSize: [30, 30],
+			iconAnchor: [8, 30],
+		}),
+	},
+	wptLabels: true,
+	xAttr: "dist",
+	xLabel: "km",
+	yAttr: "z",
+	yLabel: "m",
+	zFollow: false,
+	zooming: !L.Browser.Mobile,
+
+	// Quite uncommon and undocumented options
+	margins: { top: 30, right: 30, bottom: 30, left: 40 },
+	height: (screen.height * 0.3) || 200,
+	width: (screen.width * 0.6) || 600,
+	xTicks: undefined,
+	yTicks: undefined,
+
+	decimalsX: 2,
+	decimalsY: 0,
+	forceAxisBounds: false,
+	interpolation: "curveLinear",
+	yAxisMax: undefined,
+	yAxisMin: undefined,
+
+	// Prevent CORS issues for relative locations (dynamic import)
+	srcFolder: ((document.currentScript && document.currentScript.src) || (import.meta && import.meta.url)).split("/").slice(0,-1).join("/") + '/',
+};