rename from Pixiview to Gallery

Gallery/Login/LoginPage.xaml.cs

@@ -0,0 +1,31 @@
+using System;
+using Gallery.UI;
+using Gallery.Utils;
+
+namespace Gallery.Login
+{
+    public partial class LoginPage : AdaptedPage
+    {
+        private readonly Action action;
+
+        public LoginPage(Action after)
+        {
+            InitializeComponent();
+            webView.UserAgent = Configs.UserAgent;
+
+            BindingContext = this;
+            action = after;
+        }
+
+        private async void Button_Clicked(object sender, EventArgs e)
+        {
+            await Navigation.PopModalAsync();
+        }
+
+        private async void WebView_LoginHandle(object sender, EventArgs e)
+        {
+            await Navigation.PopModalAsync();
+            action?.Invoke();
+        }
+    }
+}