Calculate text width for a label

[Sobraj]

Hi,

Is there a way to know what a length will be of a string (based on settings of a label)?

I want to know before I assign text to a label if it will fit inside the label (with a max width).
Something like:

   if(myLabel.TextWidth(myText) > myLabel.width) do something with myText;

[ArenMook]

label.UpdateNGUIText();
Vector2 size = NGUIText.CalculatePrintedSize("some text");

[Sobraj]

It does some weird things on my end.

My label has a width of 650 and has shrinkContent when I have a string which is clearly larger than the label can contain without resizing, it gives me a x value of 642.
If I put my label on clamp it does the same, and when I put it on resize freely it says it is 270.

Am I missing something?

[ArenMook]

You need to turn off Shrink Content before doing this, otherwise it won't resize.

[Sobraj]

When I put it on freely resize it says it is 270 wide, while it clearly is way more then 650.

[ArenMook]

Let me rephrase... you need to change the label to Resize Freely prior to calling NGUIText.Update.

You can also forego the whole NGUIText thing just by simply doing this:

1. UILabel.Overflow ov = label.overflowMethod;
2. label.overflowMethod = UILabel.Overflow.ResizeFreely;
3. label.text = "Whatever long text you want";
4. Debug.Log(label.printedSize);
5. label.overflowMethod = ov;

What I typically do in Windward (for tooltips and such) is do a check -- is the printedSize.x less or greater than a specified value? if so, then I set the label's width and change the overflow method to Resize Height instead of Resize Freely.

[Sobraj]

My label was on resize freely prior the call to UpdateNGUIText.

I used the code you supplied in your last post, works like a charm.
Thanks for your help.

[cayou]

Yeah, I don't get it how you can calculate the size of the label with a static method (NGUIText.CalculatePrintedSize), how does the system know all the settings on your label? I'm VERY curious about that. It must takes into acount the current font, the font size, the spacing of the label, etc...
Calling this method for me results in very weird results too.
But still, the printedSize accessor of the UILabel makes a lot more sense.

[ArenMook]

UILabel.UpdateNGUIText()

[cayou]

Does the combo "myLabel.UpdateNGUIText + NGUIText.CalculatePrintedSize" make the same result as "myLabel.printedSize" ?

[ArenMook]

printedSize results in a call to ProcessText() which does more than setting NGUIText. It handles resizing of the label as well, for example.

[bandingyue]

I think maybe you should add a param to this function,a int param of lable`s size.

sometimes it is unconvinent to use label.UpdateNGUIText before.