switch to sqlite

Billing.Shared/UI/Converters.cs

@@ -205,7 +205,7 @@ namespace Billing.UI
                     {
                         if (!int.TryParse(key, NumberStyles.HexNumber, CultureInfo.InvariantCulture, out int i))
                         {
-                            return ImageSource.FromFile(BaseModel.ICON_DEFAULT);
+                            return ImageSource.FromFile(Definition.DefaultIcon);
                         }
                         glyph = char.ConvertFromUtf32(i);
                     }

Billing.Shared/UI/Definition.cs

@@ -1,17 +1,15 @@
 using System;
-using System.Collections.Generic;
-using System.IO;
 using System.Threading.Tasks;
-using System.Xml.Linq;
 using Billing.Languages;
-using Billing.Models;
 using Xamarin.Forms;
 
 namespace Billing.UI
 {
     public static partial class Definition
     {
-        public static string PrimaryColorKey = "PrimaryColor";
+        public const string PrimaryColorKey = "PrimaryColor";
+        public const string DefaultIcon = "ic_default";
+
         public static partial (string main, long build) GetVersion();
         public static partial string GetRegularFontFamily();
         public static partial string GetSemiBoldFontFamily();
@@ -98,50 +96,33 @@ namespace Billing.UI
             // add 23:59:59.999...
             return date.AddTicks(863999999999);
         }
-    }
 
-    public static class ModelExtensionHelper
-    {
-        public static List<T> FromStream<T>(Stream stream) where T : IModel, new()
+        public static bool IsTransparent(this long color)
         {
-            XDocument doc = XDocument.Load(stream);
-            var root = doc.Root;
-            var list = new List<T>();
-            foreach (XElement ele in root.Elements("item"))
-            {
-                if (ele.Attribute("null")?.Value == "1")
-                {
-                    list.Add(default);
-                }
-                else
-                {
-                    T value = new();
-                    value.OnXmlDeserialize(ele);
-                    list.Add(value);
-                }
-            }
-            return list;
+            return (color & 0xff000000L) == 0x00000000L;
         }
 
-        public static void ToStream<T>(this IEnumerable<T> list, Stream stream) where T : IModel
+        public static Color ToColor(this long color)
         {
-            XElement root = new("root");
-            foreach (var t in list)
-            {
-                XElement item = new("item");
-                if (t == null)
-                {
-                    item.Add(new XAttribute("null", 1));
-                }
-                else
-                {
-                    t.OnXmlSerialize(item);
-                }
-                root.Add(item);
-            }
+            ulong c = (ulong)color;
+            int r = (int)(c & 0xff);
+            c >>= 8;
+            int g = (int)(c & 0xff);
+            c >>= 8;
+            int b = (int)(c & 0xff);
+            c >>= 8;
+            int a = (int)(c & 0xff);
+            return Color.FromRgba(r, g, b, a);
+        }
 
-            XDocument doc = new(new XDeclaration("1.0", "utf-8", "yes"), root);
-            doc.Save(stream, SaveOptions.DisableFormatting);
+        public static long ToLong(this Color color)
+        {
+            long l =
+                (uint)(color.A * 255) << 24 |
+                (uint)(color.B * 255) << 16 |
+                (uint)(color.G * 255) << 8 |
+                (uint)(color.R * 255);
+            return l;
         }
     }