From a1e74710d529cddd01107d83d120c370895e8d1c Mon Sep 17 00:00:00 2001
From: Dan Moran MBA15 <dmoran@alumni.whitman.edu>
Date: Tue, 26 Nov 2024 11:14:17 +0100
Subject: [PATCH] added support for .palettename.txt

---
 public/favicon.svg                |  9 +++++++++
 src/components/Map.astro          |  7 ++++++-
 src/scripts/parseQGISColorfile.js | 21 +++++++++++++++++++++
 3 files changed, 36 insertions(+), 1 deletion(-)
 create mode 100644 public/favicon.svg

diff --git a/public/favicon.svg b/public/favicon.svg
new file mode 100644
index 0000000..f157bd1
--- /dev/null
+++ b/public/favicon.svg
@@ -0,0 +1,9 @@
+<svg xmlns="http://www.w3.org/2000/svg" fill="none" viewBox="0 0 128 128">
+    <path d="M50.4 78.5a75.1 75.1 0 0 0-28.5 6.9l24.2-65.7c.7-2 1.9-3.2 3.4-3.2h29c1.5 0 2.7 1.2 3.4 3.2l24.2 65.7s-11.6-7-28.5-7L67 45.5c-.4-1.7-1.6-2.8-2.9-2.8-1.3 0-2.5 1.1-2.9 2.7L50.4 78.5Zm-1.1 28.2Zm-4.2-20.2c-2 6.6-.6 15.8 4.2 20.2a17.5 17.5 0 0 1 .2-.7 5.5 5.5 0 0 1 5.7-4.5c2.8.1 4.3 1.5 4.7 4.7.2 1.1.2 2.3.2 3.5v.4c0 2.7.7 5.2 2.2 7.4a13 13 0 0 0 5.7 4.9v-.3l-.2-.3c-1.8-5.6-.5-9.5 4.4-12.8l1.5-1a73 73 0 0 0 3.2-2.2 16 16 0 0 0 6.8-11.4c.3-2 .1-4-.6-6l-.8.6-1.6 1a37 37 0 0 1-22.4 2.7c-5-.7-9.7-2-13.2-6.2Z" />
+    <style>
+        path { fill: #000; }
+        @media (prefers-color-scheme: dark) {
+            path { fill: #FFF; }
+        }
+    </style>
+</svg>
diff --git a/src/components/Map.astro b/src/components/Map.astro
index 7625093..88b1d7d 100644
--- a/src/components/Map.astro
+++ b/src/components/Map.astro
@@ -18,7 +18,7 @@ import { getInterpolateBand1AsColor } from '../scripts/palette.js';
 import { transformExtent, Projection, get as getProjection, fromLonLat } from 'ol/proj';
 import {register,fromEPSGCode} from 'ol/proj/proj4';
 import proj4 from 'proj4'
-import {getQGISColorfile} from '../scripts/parseQGISColorfile.js';
+import {getQGISColorfile, getPalettenameFile} from '../scripts/parseQGISColorfile.js';
 
 
 let source : any = null;
@@ -117,6 +117,11 @@ async function buildMapForGeotiff() {
     }
   });
 
+  // Launch an async function to try and get a .palettename.txt for this URL  
+  // This will trigger a "newpalette" event if found
+  getPalettenameFile();
+
+
   // Launch an async function to try and get a QGIS colorfile for the palette
   // This will trigger a "newpalette" event if a QGIS colorfile is found
   getQGISColorfile();
diff --git a/src/scripts/parseQGISColorfile.js b/src/scripts/parseQGISColorfile.js
index af7aff0..809698d 100644
--- a/src/scripts/parseQGISColorfile.js
+++ b/src/scripts/parseQGISColorfile.js
@@ -45,6 +45,27 @@ export async function getQGISColorfile(){
     }
 }
 
+
+/**
+ * Try and get the .palettename.txt file for the URL
+ * This will trigger a "newpalette" event if found
+ * @returns 
+ */
+export async function getPalettenameFile(){
+    const url = localStorage.getItem('url');
+    if (!url) return null;
+    try {
+        const palettenameurl = url.replace('.tif', '.palettename.txt');
+        const response = await fetch(palettenameurl);
+        if (!response.ok) return null;
+        const text = await response.text();
+        localStorage.setItem('palettename', text);
+        document.dispatchEvent(new Event('newpalette'));
+    } catch (e) {
+    }
+}
+
+
 /**
  * Returns a function which accepts a value in the domain
  * of the QGISColorfile and returns a color.