-/* font types */
-#define FS_SMALL 0
-#define FS_BIG 1
-#define FS_MEDIUM 2
-#define FS_TILE 3
-
-/* font colors */
-#define FC_RED 0
-#define FC_BLUE 1
-#define FC_GREEN 2
-#define FC_YELLOW 3
-#define FC_SPECIAL1 4
-#define FC_SPECIAL2 5
-#define FC_SPECIAL3 6
-
-/* font graphics definitions */
-#define FONT1_XSIZE 32
-#define FONT1_YSIZE 32
-#define FONT2_XSIZE 14
-#define FONT2_YSIZE 14
-#define FONT3_XSIZE 11
-#define FONT3_YSIZE 14
-#define FONT4_XSIZE 16
-#define FONT4_YSIZE 16
-#define FONT5_XSIZE 10
-#define FONT5_YSIZE 14
-#define FONT6_XSIZE 16
-#define FONT6_YSIZE 32
-
-#define FONT_CHARS_PER_LINE 16
-#define FONT_LINES_PER_FONT 4
-
-/* text output definitions */
-#define MAX_OUTPUT_LINESIZE 256
-
-/* font structure definitions */
-
-struct FontInfo
-{
- Bitmap *bitmap_big;
- Bitmap *bitmap_medium;
- Bitmap *bitmap_small;
- Bitmap *bitmap_tile;
-};
-
-
-void InitFontInfo(Bitmap *, Bitmap *, Bitmap *, Bitmap *);
-int getFontWidth(int, int);
-int getFontHeight(int, int);
+// default fonts
+#define MAIN_FONT_INITIAL_1 0
+#define MAIN_FONT_INITIAL_2 1
+#define MAIN_FONT_INITIAL_3 2
+#define MAIN_FONT_INITIAL_4 3
+
+// font colors
+#define FC_RED MAIN_FONT_INITIAL_1
+#define FC_BLUE MAIN_FONT_INITIAL_2
+#define FC_GREEN MAIN_FONT_INITIAL_3
+#define FC_YELLOW MAIN_FONT_INITIAL_4
+
+// text output definitions
+#define MAX_OUTPUT_LINESIZE 1024
+
+// special constants for old ISO-8859-1 character byte values
+#define CHAR_BYTE_UMLAUT_A ((char)0xc4)
+#define CHAR_BYTE_UMLAUT_O ((char)0xd6)
+#define CHAR_BYTE_UMLAUT_U ((char)0xdc)
+#define CHAR_BYTE_UMLAUT_a ((char)0xe4)
+#define CHAR_BYTE_UMLAUT_o ((char)0xf6)
+#define CHAR_BYTE_UMLAUT_u ((char)0xfc)
+#define CHAR_BYTE_SHARP_S ((char)0xdf)
+#define CHAR_BYTE_COPYRIGHT ((char)0xa9)
+#define CHAR_BYTE_REGISTERED ((char)0xae)
+#define CHAR_BYTE_DEGREE ((char)0xb0)
+#define CHAR_BYTE_CURSOR ((char)0xa0)
+
+// special character mapping for default fonts
+#define FONT_ASCII_CURSOR ((char)160)
+#define FONT_ASCII_BUTTON ((char)128)
+#define FONT_ASCII_UP ((char)129)
+#define FONT_ASCII_DOWN ((char)130)
+#define FONT_ASCII_LEFT ((char)'<')
+#define FONT_ASCII_RIGHT ((char)'>')
+
+#define MAP_FONT_ASCII(c) ((c) >= 'a' && (c) <= 'z' ? 'A' + (c) - 'a' : \
+ (c) == CHAR_BYTE_COPYRIGHT ? 96 : \
+ (c) == CHAR_BYTE_UMLAUT_a ? 97 : \
+ (c) == CHAR_BYTE_UMLAUT_A ? 97 : \
+ (c) == CHAR_BYTE_UMLAUT_o ? 98 : \
+ (c) == CHAR_BYTE_UMLAUT_O ? 98 : \
+ (c) == CHAR_BYTE_UMLAUT_u ? 99 : \
+ (c) == CHAR_BYTE_UMLAUT_U ? 99 : \
+ (c) == CHAR_BYTE_DEGREE ? 100 : \
+ (c) == CHAR_BYTE_REGISTERED ? 101 : \
+ (c) == FONT_ASCII_CURSOR ? 102 : \
+ (c) == FONT_ASCII_BUTTON ? 109 : \
+ (c) == FONT_ASCII_UP ? 110 : \
+ (c) == FONT_ASCII_DOWN ? 111 : \
+ (c))
+
+// 64 regular ordered ASCII characters, 6 special characters, 1 cursor char.
+#define MIN_NUM_CHARS_PER_FONT 64
+#define DEFAULT_NUM_CHARS_PER_FONT (MIN_NUM_CHARS_PER_FONT + 6 +1)
+#define DEFAULT_NUM_CHARS_PER_LINE 16
+
+
+// font structure definitions
+
+void InitFontInfo(struct FontBitmapInfo *, int,
+ int (*function1)(int), int (*function2)(char *));
+void FreeFontInfo(struct FontBitmapInfo *);
+
+struct FontBitmapInfo *getFontBitmapInfo(int);
+
+int getFontWidth(int);
+int getFontHeight(int);
+int getFontDrawOffsetX(int);
+int getFontDrawOffsetY(int);
+int getTextWidth(char *, int);
+
+void getFontCharSource(int, char, Bitmap **, int *, int *);
+
+int maxWordLengthInRequestString(char *);
+