iOS: Fix toolbars disappearing when scrolling too far up

Gemini-iOS/ContentView.swift

@@ -49,11 +49,16 @@ struct ContentView: View {
                     // It's not actually user scrolling, and this screws up our animation, so we ignore it.
                     guard abs(delta) != outer.safeAreaInsets.top else { return }
                     
-                    if delta != 0 {
-                        barOffset += delta
+                    if scrollOffset < 0 {
+                        barOffset = 0
+                    } else {
+                        if delta != 0 {
+                            barOffset += delta
+                        }
+                        
+                        print(barOffset)
+                        barOffset = max(0, min(navBarHeight + outer.safeAreaInsets.top, barOffset))
                     }
-                    
-                    barOffset = max(0, min(navBarHeight + outer.safeAreaInsets.top, barOffset))
                 }
             }
             
@@ -63,7 +68,7 @@ struct ContentView: View {
                         Color.clear.preference(key: NavBarHeightPrefKey.self, value: geom.frame(in: .global).height)
                     })
                     .offset(y: -barOffset)
-                
+
                 Spacer()
                 
                 ToolBar(navigator: navigator, shareCurrentURL: shareCurrentURL)

Gemini.xcodeproj/xcshareddata/xcschemes/Gemini-iOS.xcscheme

@@ -59,7 +59,7 @@
          <EnvironmentVariable
             key = "DEFAULT_URL"
             value = "gemini://drewdevault.com"
-            isEnabled = "YES">
+            isEnabled = "NO">
          </EnvironmentVariable>
       </EnvironmentVariables>
    </LaunchAction>