Find CGRect of a substring

Asked Sep 01 '14 at 17:02

Active Sep 01 '14 at 17:02

Viewed 813 times

I want to get the coordinates of a substring of attributed text. This is a simplified version of the premise.

// Content
NSString *haystack = @"This is a paragraph of moderate length. I want to find a specific word within it. And then draw on top of that Word a rectangular shape.";
NSString *needle = @"word";

// Finding the needle
NSRange range = [haystack rangeOfString:needle];
range.location; // 66
range.length;   // 4

// Draw it
UILabel *label;
label.text = haystack;

The range only gives me a character-wise location of the needle within the haystack. I need a bounding CGRect of the needle. Here's what I want to achieve, having this UILabel.

Draw a rounded rect over the needle.

asked Sep 01 '14 at 17:02

Morgan Wilde

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I am thinking, take a screenshot, do character recognition using Tesseract. Get the cordinates and size from it in exact pixels. – avismara Sep 01 '14 at 17:10
@codingVoldemort wow, that seems like major overkill. – Morgan Wilde Sep 01 '14 at 17:22
1

If my client wants this tomorrow, that's what I would do. Meanwhile, I am thinking better ways. :P – avismara Sep 01 '14 at 17:23
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This guy seems to have achieved a similar thing: http://stackoverflow.com/questions/16362407/nsattributedstring-background-color-and-rounded-corners – Dhwanit Zaveri Sep 01 '14 at 17:31
There MUST be a better way than that. @MorganWilde, hold on brother! :P – avismara Sep 01 '14 at 17:34

Find CGRect of a substring

0 Answers0