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Fixes #154: Enable zoom in Nightscout view #439

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Merged
merged 1 commit into from
Jul 21, 2025
Merged

Fixes #154: Enable zoom in Nightscout view #439

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19 changes: 15 additions & 4 deletions LoopFollow/ViewControllers/NightScoutViewController.swift
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Original file line number Diff line number Diff line change
Expand Up @@ -23,16 +23,17 @@ class NightscoutViewController: UIViewController {

guard let myUrl = URL(string: url) else { return }

webView.configuration.preferences.javaScriptEnabled = true
let webpagePreferences = WKWebpagePreferences()
webpagePreferences.allowsContentJavaScript = true
webView.configuration.defaultWebpagePreferences = webpagePreferences

webView.navigationDelegate = self
webView.uiDelegate = self
webView.load(URLRequest(url: myUrl))

let refreshControl = UIRefreshControl()
refreshControl.addTarget(self, action: #selector(reloadWebView(_:)), for: .valueChanged)
webView.scrollView.addSubview(refreshControl)

webView.uiDelegate = self
}

@objc func reloadWebView(_ sender: UIRefreshControl) {
Expand All @@ -41,7 +42,6 @@ class NightscoutViewController: UIViewController {
sender.endRefreshing()
}

// New code to clear web cache
func clearWebCache() {
let dataStore = WKWebsiteDataStore.default()
let cacheTypes = Set([WKWebsiteDataTypeDiskCache, WKWebsiteDataTypeMemoryCache])
Expand Down Expand Up @@ -106,4 +106,15 @@ extension NightscoutViewController: WKNavigationDelegate, WKUIDelegate {

return nil
}

func webView(_ webView: WKWebView, didFinish _: WKNavigation!) {
let javascript = """
var meta = document.querySelector('meta[name="viewport"]');
if (meta) {
meta.setAttribute('content', 'width=device-width, initial-scale=0.9, maximum-scale=5.0, user-scalable=yes');
}
"""

webView.evaluateJavaScript(javascript)
}
}