private async Task SetImageAsync(SetImageTrace trace)
{
using (var strm = await trace.File.OpenReadAsync())
{
await SetImageAsync(strm);
}
}
/// <summary>
/// 文字列にシリアライズされた手描き入力を復元する.
/// </summary>
/// <param name="text"></param>
/// <returns></returns>
private static InputTraceBase ParseTrace(string text)
{
JsonArray jsonArray;
if (!JsonArray.TryParse(text, out jsonArray))
{
return(null);
}
InputTraceKind kind;
if (!Enum.TryParse(jsonArray.GetStringAt(0), out kind))
{
return(null);
}
InputTraceBase trace;
switch (kind)
{
case InputTraceKind.BeginStroke:
trace = new BeginStrokeTrace();
break;
case InputTraceKind.MoveStroke:
trace = new MoveStrokeTrace();
break;
case InputTraceKind.EndStroke:
trace = new EndStrokeTrace();
break;
case InputTraceKind.RemoveStroke:
trace = new RemoveStrokeTrace();
break;
case InputTraceKind.SetStrokeColor:
trace = new SetStrokeColorTrace();
break;
case InputTraceKind.SetStrokeThickness:
trace = new SetStrokeThicknessTrace();
break;
case InputTraceKind.SetBackgroundColor:
trace = new SetBackgroundColorTrace();
break;
case InputTraceKind.SetImage:
trace = new SetImageTrace();
break;
default:
return(null);
}
trace.LoadFromJson(jsonArray);
return(trace);
}
public async Task SetImageAsync(Windows.Storage.StorageFile imageFile, bool deferred = false)
{
var trace = new SetImageTrace()
{
Timestamp = DateTime.UtcNow.Ticks,
FileName = imageFile.Name,
File = imageFile,
Source = InputTraceFileSource.CreateNew,
};
await SetImageAsync(trace);
if (deferred)
{
this.inputRecorderForNewTrace.AddDeferredTrace(trace);
}
else
{
this.inputRecorderForNewTrace.Add(trace);
}
}