public bool OnTouch(View v, MotionEvent evt)
{
if (view.touchListener != null)
{
view.touchListener.OnTouch(v, evt); // User-defined handler, maybe
}
view.mScaleDetector.OnTouchEvent(evt);
view.mGestureDetector.OnTouchEvent(evt);
PointF curr = new PointF(evt.GetX(), evt.GetY());
if (view.state == TouchState.NONE || view.state == TouchState.DRAG || view.state == TouchState.FLING)
{
switch (evt.Action)
{
case MotionEventActions.Down:
last.Set(curr);
if (view.fling != null)
{
view.fling.CancelFling();
}
view.SetState(TouchState.DRAG);
break;
case MotionEventActions.Move:
if (view.state == TouchState.DRAG)
{
float deltaX = curr.X - last.X;
float deltaY = curr.Y - last.Y;
float fixTransX = view.GetFixDragTrans(deltaX, view.viewWidth, view.GetImageWidth());
float fixTransY = view.GetFixDragTrans(deltaY, view.viewHeight, view.GetImageHeight());
view.matrix.PostTranslate(fixTransX, fixTransY);
view.FixTrans();
last.Set(curr.X, curr.Y);
}
break;
case MotionEventActions.Up:
case MotionEventActions.PointerUp:
view.SetState(TouchState.NONE);
break;
}
}
view.ImageMatrix = view.matrix;
//
// indicate event was handled
//
return(true);
}
public void Run()
{
if (scroller.IsFinished)
{
scroller = null;
return;
}
if (scroller.ComputeScrollOffset())
{
int newX = scroller.CurrX;
int newY = scroller.CurrY;
int transX = newX - currX;
int transY = newY - currY;
currX = newX;
currY = newY;
view.matrix.PostTranslate(transX, transY);
view.FixTrans();
view.ImageMatrix = view.matrix;
view.CompatPostOnAnimation(this);
}
}