I use NSButton with empty title and image on it, and it cannot be accessed with VoiceOver.
But when I'm setting title (VoiceOver seems to use title), NSButton tries to show it.
I think there should be an easy way to not display title, or to set button text, used by VoiceOver, however quick search didn't give any results yet.
P.S. I'm creating button programmatically.
you must assign the accessibilityLabel to the image object directly, It works this way.
Solved issue - added subclass for NSButtonCell, which does nothing in drawTitle: method and returns NSZeroRect. Seems to work ok.
Related
so im toying around with Autolayout with a Storyboard.
So i have a View, containing a Button and to its right a TextField. (Sadly i cant post Pictures here yet) ;)
now what im trying to do, is that by default, when my view gets shown the button is hidden, and the view kinda resizes it self to only contain the Text field.
And after the text field is clicked (selected) the button is shown and with this the view resizes itself to fit the button and the Textfield.
I think i might be able to do that in code, by simply updating the View width with the width of the contained and shown items.
But i feel like there has to be a easy way to do that with Autolayout.
So i tryed many things, but it just doesnt work, no matter what constrains i add.
How can i solve this ? Thanks in Advance.
EDIT
i forgot to mention, even if i remove the button from the superview i get bad results, i suppose the reason is that the constrains get messed up if i remove the Button.
So thats not an Option.
OS X Finder has this nice feature to colour-label files. I'm thinking of using a similar feature in my app (that is: use this in an NSTableView/NSOutlineView, not looking to highlight items in Finder from my app). Is this ability somehow available through any of the default user interface classes or would it require a custom implementation?
I have experimented with setting NSTextFieldBezelStyle to NSTextFieldRoundedBezel but this seems to kill the ability to draw a background colour and also defaults to a grey border.
Have a look at the NSURL NSURLLabelColorKey, which is one of the attributes you can set for a URL. You can set these values with setResourceValues:error:
After Edit: Sorry, I misinterpreted the question. I think the easiest way is to use a view based table and put a borderless label inside an NSBox of the custom type. You can give the box rounded corners and a background color with no border, and that looks just like the finder label.
Download the Apple SourceView sample app. It's an NSOutlineView that uses a custom NSTextFieldCell for the drawing; tweak that to draw your custom colors.
Is there a way to hide the pop-up button of an NSComboBox? I can't find anything in the documentation for NSComboBox or NSComboBoxCell. There is a setButtonBordered: method on NSComboBox, but this just changes to an alterate button style.
If I can't hide it, can I at least disable it?
If the combo box has no items, clicking the pop-up button doesn't do anything.
Maybe you can work around the limitation by emptying the list when you want to disable the button.
It makes clicking have no effect, but it doesn't hide the button or draw it as disabled.
I don't think this is possible. An NSComboBox without the button is effectively an NSTextField, so I guess it was deemed unnecessary. You could probably do this by subclassing NSComboBoxCell and override -drawWithFrame:inView: or -drawInteriorWithFrame:inView:.
Safest way would probably be to add your own buttonHidden property and use the ObjC runtime method class_getMethodImplementation to look up the IMP for the same method in NSTextField and just call that when the button is hidden. You'd effectively be calling super's super, so you'd get a regular text field look.
you can disable it by doing:
myComboBox.Enabled = false;
Hey guys, I've just migrated my image selector from NSCollectionView to IKImageBrowserView. I've got almost everything set up the way I want it, except for the selection ring. I don't like the greyed out background that IKImageBrowserView defaults to, and I wanted to do a yellow stroke around the edge of my selected image to indicate it's selection (like in iPhoto). Is is possible to override the draw state of IKImageBrowserCell? I haven't been able to find any way to do it yet. It doesn't have the simple drawRect methods that I'm used to. Any help would be appreciated. I'm assuming I have to use CALayers?
I overrode - (CALayer *)layerForType:(NSString *)type and tried just as a test, setting the layer corner radius to 0, but it didn't seem to change anything. The method is being called because if I throw a breakpoint in it, it stops there. However, even if I return nil from that method, it still draws the images like usual.
Thanks!
That is the right method for customizing the IKImageBrowserCell.
Using CALayers and configuring different attributes, you can control many facets of how the images are presented.,
A layer of type = IKImageBrowserCellSelectionLayer is what you will want to change to have the display behave and present as you wish.
Here's a link to Apple's sample code project that will get you started
I have an instance of NSImageView. I have told InterfaceBuilder to allow the user to paste or drag an image into this view. This works. However, I don't see a way in the NSImageView or related documentation to get notified when this actually happens. I was expecting a delegate or some such, but I have been unable to find it. Any ideas?
This is what Cocoa Bindings does best.
Instead of talking to the view, simply have a property whose value is an image, and bind the image view's image binding to it; then, when you want to change the image in the image view yourself, all you have to do is set the value of the property, and the image view will notice the change.
The user pasting or dragging into the image view is essentially the same thing, partly in reverse: The paste or drop will change the value of the image view, which will then set the value of your property, which will cause anything else bound to it to notice the change and pick up the new value as before.
Aside from ripping out your existing send-explicit-messages-to-views code, this will require almost no code work: The only code you need is for your property. You'll hook up the Binding in IB.
See the Key-Value Coding Programming Guide and the Cocoa Bindings Programming Topics.
As for me the better way to override function
-(void)paste:(id)sender
But only if you have it in NSView based class which has NSResponder as parent