From 8f7387f026c8b983f8896626c1db689e23e148b9 Mon Sep 17 00:00:00 2001
From: Anton Tananaev <anton@traccar.org>
Date: Fri, 27 May 2022 08:48:14 -0700
Subject: Preload map images once

---
 modern/src/map/core/preloadImages.js | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)
 create mode 100644 modern/src/map/core/preloadImages.js

(limited to 'modern/src/map/core/preloadImages.js')

diff --git a/modern/src/map/core/preloadImages.js b/modern/src/map/core/preloadImages.js
new file mode 100644
index 00000000..e0796e1f
--- /dev/null
+++ b/modern/src/map/core/preloadImages.js
@@ -0,0 +1,19 @@
+import palette from '../../common/theme/palette';
+import deviceCategories from '../../common/util/deviceCategories';
+import { loadImage, prepareIcon } from './mapUtil';
+
+export const mapImages = {};
+
+export default async () => {
+  const background = await loadImage('images/background.svg');
+  mapImages.background = await prepareIcon(background);
+  await Promise.all(deviceCategories.map(async (category) => {
+    const results = [];
+    ['positive', 'negative', 'neutral'].forEach((color) => {
+      results.push(loadImage(`images/icon/${category}.svg`).then((icon) => {
+        mapImages[`${category}-${color}`] = prepareIcon(background, icon, palette.colors[color]);
+      }));
+    });
+    await Promise.all(results);
+  }));
+};
-- 
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