DOKK / manpages / debian 10 / allegro4-doc / merge_fonts.3alleg4.en
merge_fonts(3alleg4) Allegro manual merge_fonts(3alleg4)

merge_fonts - Merges two fonts into one font. Allegro game programming library.

#include <allegro.h>

FONT *merge_fonts(FONT *f1, FONT *f2)

This function merges the character ranges from two fonts and returns a new font containing all characters in the old fonts. In general, you cannot merge fonts of different types (eg, TrueType fonts and bitmapped fonts), but as a special case, this function can promote a monochrome bitmapped font to a color font and merge those. Example:


FONT *myfont;
FONT *myfancy_font;
FONT *lower_range;
FONT *upper_range;
FONT *capitals;
FONT *combined_font;
FONT *tempfont;
...
/* Create a font that contains the capitals from */
/* the fancy font but other characters from myfont */
lower_range = extract_font_range(myfont, -1, 'A'-1);
upper_range = extract_font_range(myfont, 'Z'+1, -1);
capitals = extract_font_range(myfancy_font, 'A', 'Z');

tempfont = merge_fonts(lower_range, capitals);
combined_font = merge_fonts(tempfont, upper_range);

/* Clean up temporary fonts */
destroy_font(lower_range);
destroy_font(upper_range);
destroy_font(capitals);
destroy_font(tempfont);

Returns a pointer to the new font or NULL on error. Remember that you are responsible for destroying the font when you are finished with it to avoid memory leaks.

extract_font_range(3alleg4), is_trans_font(3alleg4), is_color_font(3alleg4), is_mono_font(3alleg4), exfont(3alleg4)

version 4.4.2 Allegro