core-text

I'm trying to set the infamous NSFontAttributeName property of an NSAttributedString in iOS but it just doesn't seem to work: first off, none of the NS constants seem defined for iOS I read somewhere that I could instead work around it by passing the CoreText consts instead. Fine... but still, The attribute expects an NSFont and I'm stuck with UIFont or CTFontRef, neither of which seems to work: this doesn't work: CTFontRef ctFont = CTFontCreateWithName((CFStringRef)[UIFont boldSystemFontOfSize:16].fontName, [UIFont boldSystemFontOfSize:16].pointSize, NULL); [myAttString addAttribute:(NSString

I want to "highlight" specific words in UITextView, not with a solid color (which would be possible via NSAttributedString ), but rather with a gradient and maybe some other fancy effects. Hence, I decided it would be necessary to manually create a view and overlay (or underlay) it using the bounding rectangles of the given text. To my surprise this turned out to be pretty straightforward. Example is inside a UIViewController, txtView being a UITextView connected as IBOutlet : override func viewDidLayoutSubviews() { super.viewDidLayoutSubviews() // Converting to NSString as I need a NSRange

I am using Core Text to add text to UITableviewCell's content but arabic content seems to be overlapping and repeating itself as I scroll and superimpose on the other cells. I am also using other elements on the page which appear just fine and are not repeating . Just the Core Text seems to be repeating. I cant figure out why . Here is my code: - (CTFontRef)newCustomFontWithName:(NSString *)aFontName ofType:(NSString *)type attributes:(NSDictionary *)attributes { NSString *fontPath = [[NSBundle mainBundle] pathForResource:aFontName ofType:type]; NSData *data = [[NSData alloc]

I draw the text using CTFramesetter, I have set kCTParagraphStyleSpecifierParagraphSpacing , kCTParagraphStyleSpecifierLineSpacing , kCTParagraphStyleSpecifierParagraphSpacingBefore all to 0.0. As you can see in the image, the space between the last 2 lines of a paragraph is much larger than others'. There're in total 15 lines in this image, I pasted their ascent , descent , leading , origin.y in the following, we can see that the ascent and descent on the 5th and 10th line are larger than others', I couldn't find any specifier to set to avoid this weird layout. Any ideas? 1 ascent=20.639999,

I'm trying to draw text in the centre of shapes in iOS, an example would be Microsoft Office's insert shape see: https://www.dropbox.com/s/cgqyyuvy6hcv5g8/Screenshot%202014-01-21%2013.48.17.png I have an array of coordinates that are used to form the shape, which works fine for creating the actual shape. My first tactic was following this stackoverflow question: Core Text With Asymmetric Shape on iOS however I can only get it to draw the text at the bottom of the shape. Is there any way to centre the text vertically and horizontally? I then had a look at the new TextKit but I got stuck with

Is it possible to align multiple sized text by bounding center (of each size) instead of baseline? I tried CTRunDelegate feature, but it doesn't work. It was possible with CTRunDelegateCallbacks.getAscent and CTRunDelegateCallbacks.getDescent , but the feature doesn't work. Only CTRunDelegateCallbacks.getWidth worked. I succeed to laying out multiple sized text, images, and any objects, but only baseline-alignment supported. The run delegate methods getAscent and getDescent are, in fact, called (it is working in my own code). Of course, it makes sense that this doesn't change the baseline (and