public Fling(TouchImageView view, int velocityX, int velocityY)
{
this.view = view;
view.SetState(TouchState.FLING);
scroller = new Scroller(view.context);
view.matrix.GetValues(view.m);
int startX = (int)view.m[Matrix.MtransX];
int startY = (int)view.m[Matrix.MtransY];
int minX, maxX, minY, maxY;
if (view.GetImageWidth() > view.viewWidth)
{
minX = view.viewWidth - (int)view.GetImageWidth();
maxX = 0;
}
else
{
minX = maxX = startX;
}
if (view.GetImageHeight() > view.viewHeight)
{
minY = view.viewHeight - (int)view.GetImageHeight();
maxY = 0;
}
else
{
minY = maxY = startY;
}
scroller.Fling(startX, startY, (int)velocityX, (int)velocityY, minX, maxX, minY, maxY);
currX = startX;
currY = startY;
}
public DoubleTapZoom(TouchImageView view, float targetZoom, float focusX, float focusY, bool stretchImageToSuper)
{
this.view = view;
view.SetState(TouchState.ANIMATE_ZOOM);
startTime = DateTime.Now.Ticks;
this.startZoom = view.normalizedScale;
this.targetZoom = targetZoom;
this.stretchImageToSuper = stretchImageToSuper;
PointF bitmapPoint = view.TransformCoordTouchToBitmap(focusX, focusY, false);
this.bitmapX = bitmapPoint.X;
this.bitmapY = bitmapPoint.Y;
//
// Used for translating image during scaling
//
startTouch = view.TransformCoordBitmapToTouch(bitmapX, bitmapY);
endTouch = new PointF(view.viewWidth / 2, view.viewHeight / 2);
}
public ScaleListener(TouchImageView view)
{
this.view = view;
}
public TouchImageViewListener(TouchImageView view)
{
this.view = view;
}
public GestureListener(TouchImageView view)
{
this.view = view;
}
/**
* Set zoom parameters equal to another TouchImageView. Including scale, position,
* and ScaleType.
* @param TouchImageView
*/
public void SetZoom(TouchImageView img)
{
PointF center = img.GetScrollPosition();
SetZoom(img.GetCurrentZoom(), center.X, center.Y, img.GetScaleType());
}