Re: NSTextView and changing the selected text's color

FROM : Ross Carter
DATE : Fri May 30 17:15:20 2008

Instead of NSTextView setMarkedTextAttributes:, I think you want to 
look at setSelectedTextAttributes:. "Marked text" refers to text input 
that is not final. When you type option-e, NSTextView displays an 
accent glyph with a yellow background. That's marked text. When you 
type a letter, the the glyph is completed and the yellow marking goes 
away.

Ross

On May 30, 2008, at 7:25 AM, Mattias Arrelid wrote:

> Hi everyone,
>
> We have a subclass of NSTextView (SPTextView). A couple of these have
> some text with [NSColor grayColor] set as the
> NSForegroundColorAttributeName. It looks good, but when the user
> starts selecting text things go bad™. Since grey on light blue (the
> default system selection color) isn't very readable one could argue
> that we should change the selection color. That is pretty straight
> forward, but we'd rather not mess with this since the user might have
> her own highlight color set (through System Preferences / Appearance).
>
> The next approach would be to use NSTextView's
> setMarkedTextAttributes:. It takes a dictionary as paramater, with the
> following restrictions (according to the documentation): "A dictionary
> of attributes used to draw marked text. Text color, background color,
> and underline are the only supported attributes for marked text.".
> Regardless of how I try to specify these (I assume the attributes that
> are valid are NSForegroundColorAttributeName,
> NSBackgroundColorAttributeName, NSUnderlineColorAttributeName and
> NSUnderlineStyleAttributeName), that call doesn't affect the view.
>
> As a last resort, we could implement
> setSelectedRange:affinity:stillSelecting: in our NSTextView subclass,
> and set the foreground color of the selected range... but that would
> mean that we would have to change it back to whatever color it had
> before the selection took place. That doesn't feel right.
>
> Reading http://developer.apple.com/documentation/Cocoa/Conceptual/TextEditing/Tasks/SetFocus.html
> indicates that setMarkedTextAttributes: should do just this, but I
> cannot seem to get it working.
>
> Any suggestions?
>
> Best regards
> Mattias
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