public virtual bool onGenericMotionEvent(android.widget.TextView widget, android.text.Spannable
text, android.view.MotionEvent @event)
{
if ((@event.getSource() & android.view.InputDevice.SOURCE_CLASS_POINTER) != 0)
{
switch (@event.getAction())
{
case android.view.MotionEvent.ACTION_SCROLL:
{
float vscroll;
float hscroll;
if ((@event.getMetaState() & android.view.KeyEvent.META_SHIFT_ON) != 0)
{
vscroll = 0;
hscroll = @event.getAxisValue(android.view.MotionEvent.AXIS_VSCROLL);
}
else
{
vscroll = [email protected](android.view.MotionEvent.AXIS_VSCROLL);
hscroll = @event.getAxisValue(android.view.MotionEvent.AXIS_HSCROLL);
}
bool handled = false;
if (hscroll < 0)
{
handled |= scrollLeft(widget, text, (int)System.Math.Ceiling(-hscroll));
}
else
{
if (hscroll > 0)
{
handled |= scrollRight(widget, text, (int)System.Math.Ceiling(hscroll));
}
}
if (vscroll < 0)
{
handled |= scrollUp(widget, text, (int)System.Math.Ceiling(-vscroll));
}
else
{
if (vscroll > 0)
{
handled |= scrollDown(widget, text, (int)System.Math.Ceiling(vscroll));
}
}
return handled;
}
}
}
return false;
}
public override bool onTouchEvent(android.view.MotionEvent @event)
{
if (!mIsUserSeekable || !isEnabled())
{
return(false);
}
switch (@event.getAction())
{
case android.view.MotionEvent.ACTION_DOWN:
{
if (isInScrollingContainer())
{
mTouchDownX = @event.getX();
}
else
{
setPressed(true);
if (mThumb != null)
{
invalidate(mThumb.getBounds());
}
// This may be within the padding region
onStartTrackingTouch();
trackTouchEvent(@event);
attemptClaimDrag();
}
break;
}
case android.view.MotionEvent.ACTION_MOVE:
{
if (mIsDragging)
{
trackTouchEvent(@event);
}
else
{
float x = @event.getX();
if (System.Math.Abs(x - mTouchDownX) > mScaledTouchSlop)
{
setPressed(true);
if (mThumb != null)
{
invalidate(mThumb.getBounds());
}
// This may be within the padding region
onStartTrackingTouch();
trackTouchEvent(@event);
attemptClaimDrag();
}
}
break;
}
case android.view.MotionEvent.ACTION_UP:
{
if (mIsDragging)
{
trackTouchEvent(@event);
onStopTrackingTouch();
setPressed(false);
}
else
{
// Touch up when we never crossed the touch slop threshold should
// be interpreted as a tap-seek to that location.
onStartTrackingTouch();
trackTouchEvent(@event);
onStopTrackingTouch();
}
// ProgressBar doesn't know to repaint the thumb drawable
// in its inactive state when the touch stops (because the
// value has not apparently changed)
invalidate();
break;
}
case android.view.MotionEvent.ACTION_CANCEL:
{
if (mIsDragging)
{
onStopTrackingTouch();
setPressed(false);
}
invalidate();
// see above explanation
break;
}
}
return(true);
}