nsview

问题 Is there a way for a custom NSView to know whether it is embedded in a NSScrollView or not? I am creating a custom NSView for displaying some content. When my view is placed in a window or another view, its size is fixed and the content is clipped to available size. When my view is placed in a NSScrollView its size must be adjusted according to content so it can be scrolled if necessary. I know I can add a member in my view that specifies the NSScrollView that hosts my view and set this

问题 How do I programatically set the size of a view of an NSCollectionViewItem? I tried doing this in an NSCollectionView subclass: @implementation CustomCollectionView - (NSCollectionViewItem *)newItemForRepresentedObject:(id)object { NSCollectionViewItem *newitem = [[self itemPrototype] copy]; [newitem setRepresentedObject:object]; NSView *itemview = [newitem view]; [itemView setFrame:NSMakeRect([itemView frame].origin.x, [itemView frame].origin.y, [itemView frame].size.width, 500)]; return

问题 I have an NSView subclass that gets initialized with an OpenGL context and has a bunch of mouse event handling (onMouseDown, etc...). I have an app using it which has a main Cocoa window that contains the view and all the mouse events are working properly. However, I'm trying to use it now in another app where i have a secondary window that pops open and gets initialized with the view and while i get mouse moved evets, I don't seem to get any mouse click (or keyboard for that matter) events

问题 Background: My application has a main window which contains a few smaller NSView objects, each of which contains several different controls, labels, images, etc. One of these views (and everything it contains) is disabled in response to a given flag. When the flag is set, I automatically disable and grey-out all of the controls embedded within that NSView . Question: I would like to know how to darken the disabled NSView . The effect I am looking for would be something like drawing a 50%

问题 I have a custom NSView subclass with (for example) the following methods: override func mouseDown(with event: NSEvent) { Swift.print("mouseDown") } override func mouseDragged(with event: NSEvent) { Swift.print("mouseDragged") } override func mouseUp(with event: NSEvent) { Swift.print("mouseUp") } As long as the mouse (button) is pressed, dragged and released all inside the view, this works fine. However, when the mouse is depressed inside the view, moved outside the view, and only then

问题 I have a custom NSView subclass with (for example) the following methods: override func mouseDown(with event: NSEvent) { Swift.print("mouseDown") } override func mouseDragged(with event: NSEvent) { Swift.print("mouseDragged") } override func mouseUp(with event: NSEvent) { Swift.print("mouseUp") } As long as the mouse (button) is pressed, dragged and released all inside the view, this works fine. However, when the mouse is depressed inside the view, moved outside the view, and only then

问题 I'm customizing the UI for one of my apps, and the idea is that a text area is initially bordered gray when out of focus, and when it comes into focus, the border becomes bright white. My app uses a dark theme, and for a single-lined NSTextField , this works great. I'm running into problems with a subclassed NSTextView , however. In order to alter the border properly, I ended up having to actually subclass the parent NSScrollView , but am still seeing strange behavior. (See screenshot below.)

问题 I was trying to figure out how to create a custom view using xib files. In this question the next method is used. NSBundle.mainBundle().loadNibNamed("CardView", owner: nil, options: nil)[0] as! UIView Cocoa has the same method,however, this method has changed in swift 3 to loadNibNamed(_:owner:topLevelObjects:), which returns Bool , and previous code generates "Type Bool has no subscript members" error, which is obvious, since the return type is Bool. So, my question is how to a load view

问题 How difficult would it be to use core animation to make an NSView slide in an out of view like a sheet? Generally speaking, what would be involved in accomplishing this? I've been reading through the CA documentation, but it's been hard for me to pinpoint which parts are relevant to what I want to do since I have no experience with the framework. Any tips at all would be much appreciated. Thanks. 回答1: Since you're talking of a NSView, you're probably using Cocoa's animation support, not CA

问题 I ran into this really frustrating issue today. I want to set my view to be autosizing like this: But all I find in my xcode settings for an NSView is like this: The two screenshots are taken from two different projects with the same xcode 4.3.2. Is this a bug or am I missing something? Thanks. 回答1: Seaid's solution works. but i think it's bug because the auto sizing tool will apear about half a second when switching to another inspector. Xcode 4 interface-builder problems 回答2: Starting in