private void Viewport_ManipulationStateChanged(object sender, ManipulationStateChangedEventArgs e)
{
// Viewport sometimes does not animate correctly back to the content area,
// so here we fix it if that happens
if (Viewport.ManipulationState == ManipulationState.Idle)
{
if (Viewport.Viewport.X < 0)
{
Viewport.SetViewportOrigin(new Point(0, Viewport.Viewport.Y));
}
else if (Viewport.Viewport.X > Image.Width - Viewport.Viewport.Width)
{
Viewport.SetViewportOrigin(new Point(Image.Width - Viewport.Width, Viewport.Viewport.Y));
}
if (Viewport.Viewport.Y < 0)
{
Viewport.SetViewportOrigin(new Point(Viewport.Viewport.X, 0));
}
else if (Viewport.Viewport.Y > Image.Height - Viewport.Viewport.Height)
{
Viewport.SetViewportOrigin(new Point(Viewport.Viewport.X, Image.Height - Viewport.Height));
}
}
}
private void _vpCtrl_ManipulationStateChanged(object sender, ManipulationStateChangedEventArgs e)
{
if (this.OnScrollStateChanged == null)
{
return;
}
this.OnScrollStateChanged(this._vpCtrl.ManipulationState > 0, this._vpCtrl.ManipulationState == ManipulationState.Manipulating);
}
private void _viewport_ManipulationStateChanged(object sender, ManipulationStateChangedEventArgs e)
{
this._preventPullUntilNextManipulationStateChange = false;
ViewportControl viewport = this._viewport;
if (viewport.ManipulationState == ManipulationState.Manipulating && this.ScrollPosition == 0.0)
{
this.LockBoundsForPull(viewport);
}
else
{
this.UnlockBounds();
}
}
private void ViewportControl_OnManipulationStateChanged(object sender, ManipulationStateChangedEventArgs e)
{
if (this._isAnimating || this._viewportControl.ManipulationState != ManipulationState.Idle)
{
return;
}
this.UpdateSystemTrayAndAppBarIfNeeded();
this._isAnimating = true;
if (this.ShouldHide())
{
this.Hide(this._viewportControl.Viewport.Y < this._ucHeader.ActualHeight);
}
else
{
this.Show(true);
}
}
void OnManipulationStateChanged(object o, ManipulationStateChangedEventArgs args)
{
switch (ViewportControl.ManipulationState)
{
case ManipulationState.Idle:
// thing is rested
IsInPullToRefresh = false;
break;
case ManipulationState.Manipulating:
// user interaction
IsInPullToRefresh = ViewportAtTop;
break;
case ManipulationState.Animating:
// user let go
IsInPullToRefresh = false;
break;
default:
throw new ArgumentOutOfRangeException();
}
}
private void OnManipulationStateChanged(object sender, ManipulationStateChangedEventArgs e)
{
}
private void Viewport_ManipulationStateChanged(object sender, ManipulationStateChangedEventArgs e)
{
// Viewport sometimes does not animate correctly back to the content area,
// so here we fix it if that happens
if (Viewport.ManipulationState == ManipulationState.Idle)
{
if (Viewport.Viewport.X < 0)
{
Viewport.SetViewportOrigin(new Point(0, Viewport.Viewport.Y));
}
else if (Viewport.Viewport.X > Image.Width - Viewport.Viewport.Width)
{
Viewport.SetViewportOrigin(new Point(Image.Width - Viewport.Width, Viewport.Viewport.Y));
}
if (Viewport.Viewport.Y < 0)
{
Viewport.SetViewportOrigin(new Point(Viewport.Viewport.X, 0));
}
else if (Viewport.Viewport.Y > Image.Height - Viewport.Viewport.Height)
{
Viewport.SetViewportOrigin(new Point(Viewport.Viewport.X, Image.Height - Viewport.Height));
}
}
}
// this event fires when manupulation changes
void _viewportControl_ManipulationStateChanged(object sender, ManipulationStateChangedEventArgs e)
{
//fire the event.
PositionChanged(_viewportControl, new EventArgs());
}
// this event fires when manupulation changes
void _viewportControl_ManipulationStateChanged(object sender, ManipulationStateChangedEventArgs e)
{
//fire the event.
PositionChanged(_viewportControl, new EventArgs());
}
