Accurately Calculating Text Height In Cocoa For Mac

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(a solution in Swift is at the end of the post) I tried all of these methods and none worked for me. The 'official' way (as mentioned by OP) was off most of the time for my NSTextField.Switching to NSTextView was impossible because of XCode/IB always crashing after adding a 'NSTextView in an NSScrollView'. Long story short, I found this easy way to determine the height of my NSTextField but.

Accurately Calculating Text Height In Cocoa (for Mac, Not Ios

The more accurate the estimates, the more seamless the user experience becomes. Note When working with table view cells, you cannot change the layout of the predefined content (for example, the textLabel, detailTextLabel, and imageView properties). The very first iPhone rendered its display 60 times a second, which gives us just 0.0166 seconds to perform any app updates and render the current screen. Today, the iPad Pro goes even faster – the ProMotion 120Hz technology means our time slice has shrunk to just 0.0083 seconds, so the pressure.

I'd like to take you up on the offer hi i'm new to this but i'm designing a label for a bottle i created in 3DS Max. I'm going to give you the hieght of the label and the diameters of the two circles, if that's ok? Erm i'll post my e-mail so you can send me the draught thankyou so so so much you're gonna sve my life, cause i couldn't possibly of drawn the shape to scale on fireworks or any other related soft ware hieght 500 upper diameter 435 lower diameter 770 if you need units just use mm thanks again i'l post you an image of the bottle the label is for. Easier than older suggestions I've just started using Illustrator. The above suggestions would work, but I've discovered a much easier method, particularly if you don't have CAD won't be dealing with a big commercial job or want to make a mock up to pitch an idea. Simply measure the height of the area on the container you want to make a label for and also the approximate circumference.

Accurately Calculating Text Height In Cocoa (for Mac Not Ios 11

Open a new document in Illustrator and create a rectangle with those dimensions. Use the warparc command and set the amount to 10.

Print out the warped rectangle, cut it out and see if it will work. Then adjust the amount of warp accordingly. It's an 'old school' design method, but it worked the first time for my project. Click to expand.Hi guys, I had the same problem and I'm just a graphic designer not an engineer, so I used some weird but easy logic to figure out the warp-arch percentage to use on my label.

Simply divide the top diameter by the bottom diameter and it will give you a percentage number, take a rectangle and go to menu object/ envelope distort/ make it with warp. Choose style ARCH and use your percentage!

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Accurately Calculating Text Height In Cocoa (for Mac Not Ios 10

It works, print the retangle and cut it, put it over your cup and it will fit. I love the conical development that stevep suggested, mine is for the right brain designers Cheers.

There may be times when you need to know the height of a block of text formed by a text string after it is laid out in a fixed-width area. The NSLayoutManager class can do this very simply. This article illustrates the technique implemented in a single function.

Accurately calculating text height in cocoa for mac free

Note: You don’t need to use this technique to find the height of a single line of text. The NSLayoutManager method defaultLineHeightForFont: returns that value. The default line height is the sum of a font’s tallest ascender, plus the absolute value of its deepest descender, plus its leading.

The basic technique for calculating text height uses the three basic non-view components of the text system: NSTextStorage, NSTextContainer, and NSLayoutManager. The text storage object holds the string to be measured; the text container specifies the width of the layout area; and the layout manager does the layout and returns the height.

To set up the text system for the calculation, you need the text string to be measured, a font for the string, and a width for the area modeled by the text container. You can pass these values into a function with a declaration such as the following:

The argument names in the function declaration appear as variables in the following code fragments that define the method body.

First, you instantiate the needed text objects and hook them together. You use the designated initializer for the text storage object, which takes the string pointer as an argument. Likewise, the text container’s designated initializer takes the container size as its argument. You set the container width to your desired width and set the height to an arbitrarily large value, as shown in the following code fragment:

Once the text objects are created, you can hook them together:

You don’t need to release the text container and layout manager because you added them to the autorelease pool at initialization time. Next, set the font by adding the font attribute to the range of the entire string in the text storage object. Set the line fragment padding to 0 to get an accurate width measurement. (Padding is used in page layout to prevent the text in a text container from abutting too closely other elements on a page, such as graphics.)

Finally, because the layout manager performs layout lazily, on demand, you must force it to lay out the text, even though you don’t need the glyph range returned by this function. Then you can simply ask the layout manager for the height of the rectangle occupied by the laid-out text and, assuming this code is in a function implementation, return the value: