public GraphicsHandler(NSView view)
{
this.view = view;
graphicsContext = NSGraphicsContext.FromWindow(view.Window);
graphicsContext = graphicsContext.IsFlipped ? graphicsContext : NSGraphicsContext.FromGraphicsPort(graphicsContext.GraphicsPortHandle, true);
disposeContext = true;
Control = graphicsContext.GraphicsPort;
view.PostsFrameChangedNotifications = true;
AddObserver(NSView.FrameChangedNotification, FrameDidChange, view);
// if control is in a scrollview, we need to trap when it's scrolled as well
var parent = view.Superview;
while (parent != null)
{
var scroll = parent as NSScrollView;
if (scroll != null)
{
scroll.ContentView.PostsBoundsChangedNotifications = true;
AddObserver(NSView.BoundsChangedNotification, FrameDidChange, scroll.ContentView);
}
parent = parent.Superview;
}
SetDefaults();
InitializeContext(view.IsFlipped);
}
public GraphicsHandler(NSView view, Control ctl)
{
this.view = view;
#if OSX
graphicsContext = NSGraphicsContext.FromWindow(view.Window);
disposeContext = true;
Control = graphicsContext.GraphicsPort;
this.Flipped = view.IsFlipped;
#elif IOS
this.Control = UIGraphics.GetCurrentContext();
this.Flipped = view != null && view.Layer != null && !view.Layer.GeometryFlipped;
#endif
Control.InterpolationQuality = CGInterpolationQuality.High;
Control.SetAllowsSubpixelPositioning(false);
Control.SaveState();
#if OSX
view.PostsFrameChangedNotifications = true;
AddObserver(NSView.FrameChangedNotification, FrameDidChange, view);
// if control is in a scrollview, we need to trap when it's scrolled as well
var parent = view.Superview;
while (parent != null)
{
var scroll = parent as NSScrollView;
if (scroll != null)
{
scroll.ContentView.PostsBoundsChangedNotifications = true;
AddObserver(NSView.BoundsChangedNotification, FrameDidChange, scroll.ContentView);
}
parent = parent.Superview;
}
SetViewClip();
#endif
}
