/// <summary>
/// アイテムをロック画面に設定する.
/// </summary>
/// <param name="item"></param>
/// <returns></returns>
private async Task <bool> SetSelectedItemToLockscreenAsync(LockscreenImageItem item)
{
bool succeedToSet = false;
try
{
await LockScreen.SetImageFileAsync(item.Item);
succeedToSet = true;
}
catch (UnauthorizedAccessException)
{
// 画像ファイルを貼り付けしてその直後に
// ロック画面に設定しようとすると↑はアクセス拒否で失敗する。
// その場合でも↓で問題ないのでそれを試す。
// もしかしたら常に↓でよいのかもしれない...
}
if (!succeedToSet)
{
using (var strm = await item.Item.OpenReadAsync())
{
await LockScreen.SetImageStreamAsync(strm);
succeedToSet = true;
}
}
return(succeedToSet);
}
/// <summary>
/// セカンダリタイル用のロゴ画像のファイルを作成する.
/// </summary>
/// <param name="item">ロック画面に設定するアイテム</param>
/// <returns></returns>
private async Task CreateLogoImageFileForTileAsync(LockscreenImageItem item, string tileId)
{
System.Diagnostics.Debug.Assert(item != null);
if ((this.normalLogoImageFile != null) || (this.wideLogoImageFile != null))
{
throw new InvalidOperationException("Already created");
}
using (var inStream = await item.Item.OpenReadAsync())
{
var decoder = await BitmapDecoder.CreateAsync(inStream);
var pixelDataProvider = await decoder.GetPixelDataAsync(
BitmapPixelFormat.Rgba8,
BitmapAlphaMode.Premultiplied,
new BitmapTransform(),
ExifOrientationMode.RespectExifOrientation,
ColorManagementMode.ColorManageToSRgb);
var pixelData = pixelDataProvider.DetachPixelData();
var folder = await ApplicationData.Current.LocalFolder.CreateFolderAsync(TileImageCacheSubFolderName, CreationCollisionOption.OpenIfExists);
if (folder == null)
{
return;
}
var normalFile = await CreateTileImageCacheFileAsync(
folder,
String.Format(TileImageCacheFileNameFormatForNormal, tileId),
150,
150,
decoder,
pixelData);
var wideFile = await CreateTileImageCacheFileAsync(
folder,
String.Format(TileImageCacheFileNameFormatForWide, tileId),
310,
150,
decoder,
pixelData);
this.normalLogoImageFile = normalFile;
this.wideLogoImageFile = wideFile;
}
}
/// <summary>
/// 「ロック画面に設定するアイテム」を登録解除する.
/// </summary>
/// <param name="item"></param>
/// <returns></returns>
public static async Task Remove(LockscreenImageItem item)
{
if (StorageApplicationPermissions.FutureAccessList.ContainsItem(item.Setting.Token))
{
StorageApplicationPermissions.FutureAccessList.Remove(item.Setting.Token);
}
if (item.Setting.IsTemporary)
{
await item.Item.DeleteAsync();
}
if (!String.IsNullOrEmpty(item.Setting.TileId))
{
await TileHelper.RemoveTileRegistrationAsync(item.Setting.TileId);
item.Setting.TileId = null;
}
}
/// <summary>
/// ロック画面に設定するアイテムのセカンダリタイルを取得する.
/// </summary>
/// <param name="item"></param>
/// <returns></returns>
public static async Task <Tile> GetSecondaryTileForItem(LockscreenImageItem item)
{
if (item == null)
{
throw new ArgumentNullException("item");
}
var secondaryTile = await TileHelper.GetSecondaryTileFromTileIdAsync(item.Setting.TileId);
if (secondaryTile == null)
{
return(null);
}
return(new Tile()
{
SecondaryTile = secondaryTile,
});
}
/// <summary>
/// セカンダリタイルを作成する.
/// </summary>
/// <param name="item"></param>
public static async Task <Tile> CreateSecodaryTileForItem(LockscreenImageItem item)
{
if (item == null)
{
throw new ArgumentNullException("item");
}
var tileId = TileHelper.GetNewTileId();
if (tileId == null)
{
throw new InvalidOperationException("Too many tiles");
}
var tile = new Tile();
await tile.CreateLogoImageFileForTileAsync(item, tileId);
if (!tile.IsTileLogoImageCreated)
{
return(null);
}
Uri normalLogoUri = new Uri(TileImageCacheUriPrefix + tile.normalLogoImageFile.Name);
Uri wideLogoUri = new Uri(TileImageCacheUriPrefix + tile.wideLogoImageFile.Name);
tile.SecondaryTile = new SecondaryTile(
tileId,
item.Name,
Windows.ApplicationModel.Package.Current.Id.Name,
TileHelper.TileArgumentsSetLockscreen,
TileOptions.ShowNameOnLogo | TileOptions.ShowNameOnWideLogo,
normalLogoUri,
wideLogoUri);
return(tile);
}