I have an NSTextView
inside an NSView
(which is being used by a NSPopover
, don't know if that is relevant) that I'm trying to resize automatically and programmatically (cf caption).
I have been struggling with a lot of stuff, namely :
NSLayoutManager
and usedRectForTextContainer
that give me aberrant size values
(usedRectForTextContainer : {{0, 0}, {0.001, 28}}
)NSScrollView frame
, [NSScrollView contentView]
, [NSScrollView documentView]
I reached the point where I can resize my scollview and my Popover, but I can't get the actual height of the text inside the NSTextView.
Any kind of help would be appreciated.
-(void)resize
{
//Get clipView and scrollView
NSClipView* clip = [popoverTextView superview];
NSScrollView* scroll = [clip superview];
//First, have an extra long contentSize and ScrollView to test everything else
[popover setContentSize:NSMakeSize([popover contentSize].width, 200)];
[scroll setFrame:(NSRect){
[scroll frame].origin.x,[scroll frame].origin.y,
[scroll frame].size.width,155
}];
NSLayoutManager* layout = [popoverTextView layoutManager];
NSTextContainer* container = [popoverTextView textContainer];
NSRect myRect = [layout usedRectForTextContainer:container]; //Broken
//Now what ?
}
I still have no idea why I can't use [layout usedRectForTextContainer:container]
, but I managed to get the NSTextView
's height by using :
-(void)resize
{
//Get glyph range for boundingRectForGlyphRange:
NSRange range = [[myTextView layoutManager] glyphRangeForTextContainer:container];
//Finally get the height
float textViewHeight = [[myTextView layoutManager] boundingRectForGlyphRange:range
inTextContainer:container].size.height;
}
Here is some functional code that I have tested myself for swift. usedRectForTextContainer is not broken it just is set lazily. To set it i call glyphrangefortextcontainer
I found the answer here: http://stpeterandpaul.ca/tiger/documentation/Cocoa/Conceptual/TextLayout/Tasks/StringHeight.html
let textStorage = NSTextStorage(string: newValue as! String)
let textContainer = NSTextContainer(size: NSSize(width: view!.Text.frame.width, height:CGFloat.max))
let layoutManager = NSLayoutManager()
layoutManager.addTextContainer(textContainer)
textStorage.addLayoutManager(layoutManager)
textContainer.lineFragmentPadding = 0.0
textContainer.lineBreakMode = NSLineBreakMode.ByWordWrapping
textStorage.font = NSFont(name: "Times-Roman", size: 12)
layoutManager.glyphRangeForTextContainer(textContainer)
let rect = layoutManager.usedRectForTextContainer(textContainer)
Swift.print(rect)
The documentation also suggest that is the the case:
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