raspu
The UITextField can't show the whole code file
In your demo, the Maxima file:
/* Maxima computer algebra system */
/* symbolic constants */
[true, false, unknown, inf, minf, ind,
und, %e, %i, %pi, %phi, %gamma];
/* programming keywords */
if a then b elseif c then d else f;
for x:1 thru 10 step 2 do print(x);
for z:-2 while z < 0 do print(z);
for m:0 unless m > 10 do print(m);
for x in [1, 2, 3] do print(x);
foo and bar or not baz;
/* built-in variables */
[_, __, %, %%, linel, simp, dispflag,
stringdisp, lispdisp, %edispflag];
/* built-in functions */
[sin, cosh, exp, atan2, sqrt, log, struve_h,
sublist_indices, read_array];
/* user-defined symbols */
[foo, ?bar, baz%, quux_mumble_blurf];
/* symbols using Unicode characters */
[Љ, Щ, щ, Ӄ, ЩЩЩ, ӃӃЉЉщ];
/* numbers */
ibase : 18 $
[0, 1234, 1234., 0abcdefgh];
reset (ibase) $
[.54321, 3.21e+0, 12.34B56];
/* strings */
s1 : "\"now\" is";
s2 : "the 'time' for all good men";
print (s1, s2, "to come to the aid",
"of their country");
/* expressions */
foo (x, y, z) :=
if x > 1 + y
then z - x*y
elseif y <= 100!
then x/(y + z)^2
else z - y . x . y;
But in the demo, your UITextField can't show all the letters:
Wierd, I'll take a look at it, but must probably is an issue in the demo, not in the library.
@raspu I kill the app, and restart. It go back to normal. 🤣 I will try to find the problem, again.....
It's a very very strange question.
In the demo, if you choose the device to iPhone 8 and iPhone X in .xib file, the code will be less than the origin code.
WTF!!! The bad apple.....😓
I fixed it with the following code
let layoutManager = NSLayoutManager()
textStorage.addLayoutManager(layoutManager)
var file = UserDefaults.standard.string(forKey: "currentFile")
let token = file?.components(separatedBy: "Documents/")
file = token?[1]
if let dir = FileManager.default.urls(for: .documentDirectory, in: .userDomainMask).first {
let fileURL = dir.appendingPathComponent(file!)
//reading
do {
code = try String(contentsOf: fileURL, encoding: .utf8)
}
catch { NSLog("some error")}
}
let textContainer = NSTextContainer(size: code.height(withConstrainedWidth: viewPlaceholder.frame.size.width, font: UIFont.systemFont(ofSize: 35.0)))
layoutManager.addTextContainer(textContainer)
extension String {
func height(withConstrainedWidth width: CGFloat, font: UIFont) -> CGSize {
let constraintRect = CGSize(width: width, height: .greatestFiniteMagnitude)
let boundingBox = self.boundingRect(with: constraintRect, options: .usesLineFragmentOrigin, attributes: [.font : font], context: nil)
return boundingBox.size
}
func width(withConstrainedHeight height: CGFloat, font: UIFont) -> CGFloat {
let constraintRect = CGSize(width: .greatestFiniteMagnitude, height: height)
let boundingBox = self.boundingRect(with: constraintRect, options: .usesLineFragmentOrigin, attributes: [.font : font], context: nil)
return ceil(boundingBox.width)
}
}
You can see it used and working in this app
Phantom HTTP by JJS Digital Pty Ltd https://itunes.apple.com/au/app/phantom-http/id1335468125?mt=8
@JosephShenton I use your code to solve this problem. And I found your way is to change the textContainer's height dynamically.
And now, I wanted to achieve an effect, which needs to keep one line code to show in one line (not wrap automatically). And by your way, I calculate the Text Height - (Font Size + Line Interval) * Lines, but it still wrapped automatically..😭
So, is there any ideas? Thx.
tested https://github.com/raspu/Highlightr/pull/52
the key:
let textContainer = NSTextContainer()
also iOS demo
Disable text wrapping on the textview maybe?
@JosephShenton after a lot of searching, it look like disabling text wrapping in UITextView is impossible. But if you know otherwise, please let us know.
