Preload terminal chart canvas

2026-06-01 05:56:09 +08:00
parent 10cf557b11
commit 3447a043ff
3 changed files with 37 additions and 2 deletions
@@ -46,7 +46,11 @@ import { scanRootClass } from "@/components/dashboard/scan-root-styles";
 import { useRelativeTime } from "@/hooks/useRelativeTime";
 import { Panel } from "@/components/dashboard/scan-terminal/Panel";
 import { UsageGuideDashboard } from "@/components/dashboard/scan-terminal/UsageGuideDashboard";
-import { LiveTemperatureThresholdChart, clearCityDetailCache } from "@/components/dashboard/scan-terminal/LiveTemperatureThresholdChart";
+import {
+  LiveTemperatureThresholdChart,
+  clearCityDetailCache,
+  preloadTemperatureChartCanvas,
+} from "@/components/dashboard/scan-terminal/LiveTemperatureThresholdChart";
 import { KoyfinRowsTable } from "@/components/dashboard/scan-terminal/KoyfinRowsTable";
 import { rowName, pct, money, temp, edgeClass } from "@/components/dashboard/scan-terminal/utils";
 import { CitySelectorDropdown } from "@/components/dashboard/scan-terminal/CitySelectorDropdown";
@@ -428,6 +432,11 @@ function PolyWeatherTerminal({
  const [activeNavKey, setActiveNavKey] = useState<string>("thresholds");
  const [onlineCount, setOnlineCount] = useState<number | null>(null);

+  useEffect(() => {
+    if (activeNavKey !== "thresholds") return;
+    void preloadTemperatureChartCanvas();
+  }, [activeNavKey]);
+
  useEffect(() => {
    const fetchOnline = () => {
      if (typeof document !== "undefined" && document.visibilityState === "hidden") return;