public static void AddToRecents(EmojiDataItem emojiDataItem)
{
if (Recents == null)
{
LoadRecents();
if (Recents == null)
{
Recents = new List <EmojiDataItem>();
}
}
var prevItem = Recents.FirstOrDefault(x => x.Code == emojiDataItem.Code);
if (prevItem != null)
{
Recents.Remove(prevItem);
Recents.Insert(0, prevItem);
}
else
{
Recents.Insert(0, emojiDataItem);
Recents = Recents.Take(42).ToList();
}
SaveRecents();
}
public static void LoadRecents()
{
using (var store = IsolatedStorageFile.GetUserStoreForApplication())
{
if (!store.FileExists("EmojiRecents"))
{
return;
}
using (var stream = new IsolatedStorageFileStream("EmojiRecents", FileMode.OpenOrCreate, FileAccess.Read, FileShare.ReadWrite, store))
{
if (stream.Length <= 0)
{
return;
}
using (var br = new BinaryReader(stream))
{
var count = br.ReadInt32();
Recents = new List <EmojiDataItem>();
for (var i = 0; i < count; i++)
{
var emoji = new EmojiDataItem(br.ReadString(), br.ReadUInt64());
emoji.Uri = EmojiDataItem.BuildUri(emoji.String);
Recents.Add(emoji);
}
}
}
}
}
public static EmojiDataItem GetByIndex(int categoryIndex, int spriteIndex, int itemIndex)
{
var category = EmojiData.CodesByCategory[categoryIndex];
var emojiIndex = spriteIndex * EmojiData.ItemsInSprite + itemIndex;
if (category.Length <= emojiIndex)
{
return(null); // out of bounds
}
ulong code = category[emojiIndex];
var result = new EmojiDataItem
{
Code = code,
String = BuildString(code)
};
result.Uri = BuildUri(result.String);
return(result);
}
private void ViewOnTap(object sender, GestureEventArgs args)
{
var point = args.GetPosition(View);
var column = (int)Math.Ceiling(point.X / 79);
var row = (int)Math.Ceiling(point.Y / 70);
if (column <= 0 || row <= 0)
{
return;
}
//Debug.WriteLine("{0}-{1}", column, row);
var itemIndex = (row - 1) * EmojiData.ItemsInRow + (column - 1);
var emoji = EmojiDataItem.GetByIndex(CategoryIndex, SpriteOffset, itemIndex);
if (emoji != null)
{
EmojiSelected(this, new EmojiSelectedEventArgs {
DataItem = emoji
});
}
}