/// <summary>
/// 手描き入力終了を処理する.
/// </summary>
/// <param name="e"></param>
private void ProcessEndStroke(PointerRoutedEventArgs e)
{
var pointerPoint = e.GetCurrentPoint(this.MainCanvas);
Windows.UI.Xaml.Shapes.Polyline line;
if (!this.pressedPointerDictionay.TryGetValue(pointerPoint.PointerId, out line))
{
if (this.strokeCandidateDictionary.ContainsKey(pointerPoint.PointerId))
{
this.strokeCandidateDictionary.Remove(pointerPoint.PointerId);
}
return;
}
var trace = new EndStrokeTrace()
{
Index = (uint)line.Tag,
Position = pointerPoint.Position,
Timestamp = DateTimeOffset.UtcNow.Ticks,
};
// this.Item.InputRecorder.Add(trace);
this.inputRecorderForNewTrace.Add(trace);
EndStroke(trace);
this.pressedPointerDictionay.Remove(pointerPoint.PointerId);
}
/// <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);
}
/// <summary>
/// 手描きの入力が終わったときに呼び出す.
/// </summary>
/// <param name="pointer"></param>
private void EndStroke(EndStrokeTrace trace)
{
var elem = GetCanvasElement <Windows.UI.Xaml.Shapes.Polyline>(trace.Index);
if (elem == null)
{
return;
}
elem.Points.Add(trace.Position);
}
