public override bool OnFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY)
{
//
// If a previous fling is still active, it should be cancelled so that two flings
// are not run simultaenously.
//
_view._fling?.CancelFling();
_view._fling = new Fling(_view, (int)velocityX, (int)velocityY);
_view.CompatPostOnAnimation(_view._fling);
return(base.OnFling(e1, e2, velocityX, velocityY));
}
public void Run()
{
try
{
if (_scroller.IsFinished)
{
_scroller = null;
return;
}
if (_scroller.ComputeScrollOffset())
{
var newX = _scroller.CurrX;
var newY = _scroller.CurrY;
var transX = newX - _currX;
var transY = newY - _currY;
_currX = newX;
_currY = newY;
_view._matrix.PostTranslate(transX, transY);
_view.FixTrans();
_view.ImageMatrix = _view._matrix;
_view.CompatPostOnAnimation(this);
}
}
catch (System.Exception ex)
{
AppSettings.Logger.Warning(ex);
}
}
public void Run()
{
try
{
if (_scroller.IsFinished)
{
_scroller = null;
return;
}
if (_scroller.ComputeScrollOffset())
{
var newX = _scroller.CurrX;
var newY = _scroller.CurrY;
var transX = newX - _currX;
var transY = newY - _currY;
_currX = newX;
_currY = newY;
_view._matrix.PostTranslate(transX, transY);
_view.FixTrans();
_view.ImageMatrix = _view._matrix;
_view.CompatPostOnAnimation(this);
}
}
catch
{
//todo nothing
}
}
public override void OnScaleEnd(ScaleGestureDetector detector)
{
base.OnScaleEnd(detector);
_view.SetState(TouchState.None);
var animateToZoomBoundary = false;
var targetZoom = _view._normalizedScale;
if (_view._normalizedScale > _view._maxScale)
{
targetZoom = _view._maxScale;
animateToZoomBoundary = true;
}
else if (_view._normalizedScale < _view._minScale)
{
targetZoom = _view._minScale;
animateToZoomBoundary = true;
}
if (animateToZoomBoundary)
{
var doubleTap = new DoubleTapZoom(_view, targetZoom, _view.ViewWidth / 2f, _view.ViewHeight / 2f, true);
_view.CompatPostOnAnimation(doubleTap);
}
}
public void Run()
{
var t = Interpolate();
var deltaScale = CalculateDeltaScale(t);
_view.ScaleImage(deltaScale, _bitmapX, _bitmapY, _stretchImageToSuper);
TranslateImageToCenterTouchPosition(t);
_view.FixScaleTrans();
_view.ImageMatrix = _view._matrix;
if (t < 1f)
{
//
// We haven't finished zooming
//
_view.CompatPostOnAnimation(this);
}
else
{
//
// Finished zooming
//
_view.SetState(TouchState.None);
}
}