width of text

[NeX]

Hi there,

I asked previously if there was a way to get the pixel width of a string of text and got this great code:


int text_width(byte font, const char *s){  //calculates the width of text
 unsigned char widths[128];

 uint32_t font_addr = GD.rd32(0xffffc);

 font_addr += 148 * (font - 16);

 for (int i = 0; i < 128; i++)

    widths[i] = GD.rd(font_addr + i);

 int w = 0;

 while (*s)

   w += widths[*s++];

 return w;

}
and it works perfectly,

but there is a problem, it doesn't work with custom fonts, only built in fonts.

is there a way it could work for built in fonts?

thanks 

[NeX]

oops, i meant to say, can the code be modified to work with custom fonts? is there an automatic way of working out the width of text written with a custom font?

[jamesbowman]

There is now a proper implementation of this in the library:


void GD.textsize(int &w, int &h, int font, const char *s);


github.com/jamesbowman/gd2-lib/issues/9