* @param glyph_width VARIABLE for proportional fonts, VARIABLE for monospace ones
* @param filename image file containing the characters
* @param shadowfile image file containing the characters shadows
* @param char_width width of a character
* @param char_height height of a character
*/
* @param glyph_width VARIABLE for proportional fonts, VARIABLE for monospace ones
* @param filename image file containing the characters
* @param shadowfile image file containing the characters shadows
* @param char_width width of a character
* @param char_height height of a character
*/