/* Slide the main button left or right with the user's mouse movement when
* the mouse is held down. Once it crosses the left or right slide limit
* thresholds, fire the appropriate slide event, and fire the mouse up event
* to reset the main button to a sane location. */
private void BtnEdit_MouseMove(object sender, MouseEventArgs e)
{
var withinLimitLeft = btnMain.Location.X >= btnLeft.Location.X - btnLeft.Width;
var withinLimitRight = btnMain.Location.X <= btnLeft.Location.X + btnLeft.Width;
if (Slide && withinLimitLeft && withinLimitRight)
{
btnMain.Location = new Point(btnMain.Location.X + (e.X - Mouse), btnMain.Location.Y);
var beyondLimitLeft = btnMain.Location.X <= btnLeft.Location.X - btnLeft.Width;
var beyondLimitRight = btnMain.Location.X >= btnLeft.Location.X + btnLeft.Width;
if (beyondLimitLeft)
{
btnMain.Location = new Point(btnLeft.Location.X - btnLeft.Width, btnMain.Location.Y);
SlideLeft?.Invoke(this, null);
BtnEdit_MouseUp(this, null);
}
if (beyondLimitRight)
{
btnMain.Location = new Point(btnLeft.Location.X + btnLeft.Width, btnMain.Location.Y);
SlideRight?.Invoke(this, null);
BtnEdit_MouseUp(this, null);
}
}
}
private void NextButton_OnClick(object sender, RoutedEventArgs e)
{
if (BlockTransitions)
{
return;
}
SlideLeft.Begin();
}
protected override void OnManipulationCompleted(ManipulationCompletedEventArgs e)
{
base.OnManipulationCompleted(e);
if (BlockTransitions)
{
return;
}
var horizontalVelocity = e.FinalVelocities.LinearVelocity.X;
var verticalVelocity = e.FinalVelocities.LinearVelocity.Y;
var direction = GetDirection(horizontalVelocity, verticalVelocity);
if (direction == Orientation.Horizontal && Math.Abs(horizontalVelocity) > 200)
{
if (e.TotalManipulation.Translation.X < 0)
{
if (ShowNextButton)
{
SlideLeft.Begin();
}
else
{
SlideTopLeft.Begin();
}
}
else
{
if (ShowPreviousButton)
{
SlideRight.Begin();
}
else
{
SlideTopRight.Begin();
}
}
}
}
public virtual void OnSlideLeft(GestureEventArgs e)
{
SlideLeft?.Invoke(this, e);
}
