void Initialize()
{
var bounds = Bounds;
visibleArea = bounds.ToRectangleF();
canvas = new Canvas(bounds.ToRectangleF())
{
AutoresizingMask = UIViewAutoresizing.FlexibleDimensions,
};
BackgroundColor = Colors.White;
scrollContent = new Canvas(new RectangleF(PointF.Empty, contentSize))
{
Opaque = false,
BackgroundColor = UIColor.Clear.GetColor(),
};
scrollContent.TouchBegan += HandleTouchBegan;
scrollContent.TouchMoved += HandleTouchMoved;
scrollContent.TouchEnded += HandleTouchEnded;
scrollContent.TouchCancelled += HandleTouchCancelled;
scroll = new Scroller(bounds)
{
AutoresizingMask = UIViewAutoresizing.FlexibleDimensions,
MinimumZoomScale = 1 / 4.0f,
MaximumZoomScale = 4.0f,
AlwaysBounceVertical = true,
AlwaysBounceHorizontal = true,
BackgroundColor = UIColor.Clear,
};
scroll.AddSubview(scrollContent);
scroll.ContentSize = contentSize.ToSizeF();
TouchEnabled = true;
TouchDelayed = true;
scroll.ViewForZoomingInScrollView = delegate {
return(scrollContent);
};
scroll.ZoomingEnded += delegate {
};
scroll.Scrolled += HandleScrolled;
AddSubviews(canvas, scroll);
//
// Prime the visible area
//
HandleScrolled(scroll, EventArgs.Empty);
//
// Ready to Draw
//
SetVisibleArea();
canvas.Drawing += HandleDrawing;
}
void Initialize ()
{
var bounds = Bounds;
visibleArea = bounds.ToRectangleF ();
canvas = new Canvas (bounds.ToRectangleF ()) {
AutoresizingMask = UIViewAutoresizing.FlexibleDimensions,
};
BackgroundColor = Colors.White;
scrollContent = new Canvas (new RectangleF (PointF.Empty, contentSize)) {
Opaque = false,
BackgroundColor = UIColor.Clear.GetColor (),
};
scrollContent.TouchBegan += HandleTouchBegan;
scrollContent.TouchMoved += HandleTouchMoved;
scrollContent.TouchEnded += HandleTouchEnded;
scrollContent.TouchCancelled += HandleTouchCancelled;
scroll = new Scroller (bounds) {
AutoresizingMask = UIViewAutoresizing.FlexibleDimensions,
MinimumZoomScale = 1/4.0f,
MaximumZoomScale = 4.0f,
AlwaysBounceVertical = true,
AlwaysBounceHorizontal = true,
BackgroundColor = UIColor.Clear,
};
scroll.AddSubview (scrollContent);
scroll.ContentSize = contentSize.ToSizeF ();
TouchEnabled = true;
TouchDelayed = true;
scroll.ViewForZoomingInScrollView = delegate {
return scrollContent;
};
scroll.ZoomingEnded += delegate {
};
scroll.Scrolled += HandleScrolled;
AddSubviews (canvas, scroll);
//
// Prime the visible area
//
HandleScrolled (scroll, EventArgs.Empty);
//
// Ready to Draw
//
SetVisibleArea ();
canvas.Drawing += HandleDrawing;
}