On Jan 15, 2016, at 10:27 PM, Graham Cox <graham....@bigpond.com> wrote: > > I have a need to draw as if to the entire screen as an overlay.
> Where I’m having a problem is that I need the overlay content to match up to > objects drawn in another view, in another window. This view can be scrolled > and zoomed arbitrarily. So I need to convert coordinates from this original > view up to the screen coordinates, then back down to my overlay window’s > contentView. NSView* view1 = /* ... */; NSRect rect = /* some rect in view1's internal coordinate space (relative to its bounds, not its frame) */; NSView* view2 = /* some view in another window */; rect = [view1 convertRect:rect toView:nil]; rect = [view1.window convertRectToScreen:rect]; rect = [view2.window convertRectFromScreen:rect]; rect = [view2 convertRect:rect fromView:nil]; rect is now in view2's internal coordinate space. Regards, Ken _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
