private void TextblockGestureRecognizer()
{
var recognizer = new GestureRecognizer()
{
GestureSettings = GestureSettings.ManipulationScale
};
recognizer.ManipulationStarted += (_, __) => ViewModel.TranslatedTextFontSizePitchStart.OnNext(Unit.Default);
recognizer.ManipulationCompleted += (_, __) => ViewModel.TranslatedTextFontSizePitchCompleted.OnNext(Unit.Default);
recognizer.ManipulationUpdated += (_, e) =>
{
ViewModel.TranslatedTextFontSizePitch.OnNext(e.Cumulative.Scale);
};
// Panel has override router event, so we must use AddHandler
// to add our handler
TranslatedTextViewer.AddHandler(PointerPressedEvent,
new PointerEventHandler((_, e) =>
{
TranslatedText.CapturePointer(e.Pointer);
recognizer.ProcessDownEvent(e.GetCurrentPoint(TranslatedTextPanel));
}),
true);
TranslatedTextViewer.AddHandler(PointerMovedEvent,
new PointerEventHandler((_, e) =>
{
recognizer.ProcessMoveEvents(e.GetIntermediatePoints(TranslatedTextPanel));
}),
true);
TranslatedTextViewer.AddHandler(PointerReleasedEvent,
new PointerEventHandler((_, e) =>
{
recognizer.ProcessUpEvent(e.GetCurrentPoint(TranslatedTextPanel));
TranslatedText.ReleasePointerCapture(e.Pointer);
}),
true);
TranslatedTextViewer.AddHandler(PointerCanceledEvent,
new PointerEventHandler((_, e) =>
{
recognizer.CompleteGesture();
TranslatedText.ReleasePointerCapture(e.Pointer);
}),
true);
}