Mindboards

Posted: **31 Jul 2012, 05:03**

I have created an easy way to centre text for displaying on the NXT screen. Returns the X position of the text passed in through the first parameter.

Use:

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#include "CenterText.Lib.nxc"
TextOut( CenterText("Hello World!"), LCD_LINE3, "Hello World!" );

Remember to use the same text that you are displaying in the CenterText function.

Or use:

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#include "CenterText.Lib.nxc"
CenterTextOut(  LCD_LINE3, "Hello World!" );

Code: (for those too lazy to download)

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/*
	CenterText.Lib.nxc
*/

int CenterText( const string text ) {
	int len = StrLen(text);
	len = (len * 5);
	len = (100 - len);
	len = (len / 2);
	len = (len - 5);
	return len;
}

char CenterTextOut( int y, string text, unsigned long options = DRAW_OPT_NORMAL ) {
	int len = CenterText(text);
	return TextOut( len, y, text, options );
}

Download:

CenterText.lib.nxc: CenterText.Lib.nxc; (354 Bytes) Downloaded 333 times

Posted: **31 Jul 2012, 12:17**

Just a suggestion:

Code: Select all

int CenterTextOut( int y, string text , unsigned long options = DRAW_OPT_NORMAL ){
   int len = StrLen(text);
   len = (len * 5);
   len = (100 - len);
   len = (len / 2);
   len = (len - 5);
   TextOut( len, text, options );
}

Code: Select all

#include "CenterText.Lib.nxc"
CenterTextOut( LCD_LINE3, "Hello World!" );

Posted: **01 Aug 2012, 03:36**

I did think of doing something like that. Instead of replacing the CenterText function, how about adding to it by creating a CenterTextOut function that does exactly what your function does but insted uses the CenterText function to calculate length. (See first post for updated code.)

Posted: **03 Aug 2012, 09:17**

I agree with your int centertext-x function.
I'm only curious why you are using "5" for calculating internally:
len = (len * 5);

IIRC, the char width is 5+1 (for white space) = 6 ...

Mindboards

[LIB] CenterText

[LIB] CenterText

Re: [LIB] CenterText

Re: [LIB] CenterText

Re: [LIB] CenterText