public override bool OnTouchEvent(MotionEvent e)
{
//return base.OnTouchEvent(e);
int action = MotionEventCompat.GetActionMasked(e);
bool isStickerOnEdit = true;
switch (action)
{
case (int)MotionEventActions.Down:
downX = e.GetX();
downY = e.GetY();
if (sticker == null)
{
return(false);
}
if (removeIcon.isInActionCheck(e))
{
if (listener != null)
{
listener.onDelete(this);
}
}
else if (rotateIcon.isInActionCheck(e))
{
mode = (int)ActionMode.ROTATE;
downMatrix.Set(sticker.getMatrix());
imageMidPoint = sticker.getImageMidPoint(downMatrix);
oldRotation = sticker.getSpaceRotation(e, imageMidPoint);
Log.Debug("onTouchEvent", "Rotate gesture");
}
else if (zoomIcon.isInActionCheck(e))
{
mode = (int)ActionMode.ZOOM_SINGLE;
downMatrix.Set(sticker.getMatrix());
imageMidPoint = sticker.getImageMidPoint(downMatrix);
oldDistance = sticker.getSingleTouchDistance(e, imageMidPoint);
Log.Debug("onTouchEvent", "Single point zoom gesture");
}
else if (isInStickerArea(sticker, e))
{
mode = (int)ActionMode.TRANS;
downMatrix.Set(sticker.getMatrix());
Log.Debug("onTouchEvent", "Pan gesture");
}
else
{
isStickerOnEdit = false;
}
break;
case (int)MotionEventActions.PointerDown:
mode = (int)ActionMode.ZOOM_MULTI;
oldDistance = sticker.getMultiTouchDistance(e);
midPoint = sticker.getMidPoint(e);
downMatrix.Set(sticker.getMatrix());
break;
case (int)MotionEventActions.Move:
if (mode == (int)ActionMode.ROTATE)
{
moveMatrix.Set(downMatrix);
float deltaRotation = sticker.getSpaceRotation(e, imageMidPoint) - oldRotation;
moveMatrix.PostRotate(deltaRotation, imageMidPoint.X, imageMidPoint.Y);
sticker.getMatrix().Set(moveMatrix);
Invalidate();
}
else if (mode == (int)ActionMode.ZOOM_SINGLE)
{
moveMatrix.Set(downMatrix);
float scale = sticker.getSingleTouchDistance(e, imageMidPoint) / oldDistance;
moveMatrix.PostScale(scale, scale, imageMidPoint.X, imageMidPoint.Y);
sticker.getMatrix().Set(moveMatrix);
Invalidate();
}
else if (mode == (int)ActionMode.ZOOM_MULTI)
{
moveMatrix.Set(downMatrix);
float scale = sticker.getMultiTouchDistance(e) / oldDistance;
moveMatrix.PostScale(scale, scale, midPoint.X, midPoint.Y);
sticker.getMatrix().Set(moveMatrix);
Invalidate();
}
else if (mode == (int)ActionMode.TRANS)
{
moveMatrix.Set(downMatrix);
moveMatrix.PostTranslate(e.GetX() - downX, e.GetY() - downY);
sticker.getMatrix().Set(moveMatrix);
Invalidate();
}
break;
case (int)MotionEventActions.PointerUp:
case (int)MotionEventActions.Up:
mode = (int)ActionMode.NONE;
midPoint = null;
imageMidPoint = null;
break;
default:
break;
}
if (isStickerOnEdit && listener != null)
{
listener.onEdit(this);
}
return(isStickerOnEdit);
}