Allegro FONT conversion routines. More...

#include <math.h>
#include <string.h>
#include <stdio.h>
#include <allegro.h>
#include <allegro/internal/aintern.h>
#include "alleggl.h"
#include "allglint.h"
#include <GL/glu.h>

Defines

#define PREFIX_I "agl-font INFO: "
#define PREFIX_W "agl-font WARNING: "
#define PREFIX_E "agl-font ERROR: "
#define FONT_CHARACTER_SPACING 2
#define MIN_TEXTURE_SIZE 2
#define NUM_TEXTURE_SIZE 13

Typedefs

typedef struct texture_size texture_size

Functions

static int agl_get_font_height (AL_CONST FONT *f)
static int agl_char_length (const FONT *f, int ch)
static int agl_text_length (const FONT *f, const char *str)
static int agl_get_font_ranges (FONT *f)
static int agl_get_font_range_begin (FONT *f, int range)
static int agl_get_font_range_end (FONT *f, int range)
static FONT * agl_extract_font_range (FONT *f, int start, int end)
static FONT * agl_merge_fonts (FONT *f1, FONT *f2)
static int agl_transpose_font (FONT *f, int drange)
static void aglf_convert_allegro_font_to_bitmap (FONT_AGL_DATA *dest, FONT *f, void *src, int *height)
static void aglf_convert_allegro_font_to_texture (FONT_AGL_DATA **dest, FONT *f, void *src, int *height, float scale, GLint format)
static GLuint aglf_upload_texture (BITMAP *bmp, GLint format, int has_alpha)
static int aglf_check_texture (BITMAP *bmp, GLint format, int has_alpha)
static BITMAP * look_for_texture (int beg, int end, AGL_GLYPH *glyphs, int max_w, int max_h, int total_area, GLint format, int has_alpha)
static int iroundf (float v)
static float agl_char_length_fractional (const FONT *f, int ch)
static int create_textured_font_call_lists (AGL_GLYPH *coords, int max, BITMAP *bmp, float scale, int *height)
static FONT_AGL_DATA * copy_glyph_range (FONT_AGL_DATA *fad, int start, int end, int *height)
FONT * allegro_gl_convert_allegro_font (FONT *f, int type, float scale)
Equivalent to:
FONT * allegro_gl_convert_allegro_font_ex (FONT *f, int type, float scale, GLint format)
Converts a regular Allegro FONT to the AGL format for 3D display.
static int sort_glyphs (const void *c1, const void *c2)
static int unsort_glyphs (const void *c1, const void *c2)
static int sort_textures (const void *c1, const void *c2)
static int aglf_sort_out_glyphs (BITMAP *bmp, AGL_GLYPH *glyphs, const int beg, const int end)
static int split_font (FONT *f, void *source, void **dest1, void **dest2)
static void destroy_split_font (FONT *f, union mixed_ptr range1, union mixed_ptr range2)
static int do_crop_font_range (FONT *f, AGL_GLYPH *glyphs, int beg, int end)
static int crop_font_range (FONT *f, void *src, int beg, int end, AGL_GLYPH *glyphs, int *net_area, int *gross_area, int *max_w, int *max_h)
static int dummy_render_char (AL_CONST FONT *f, int ch, int fg, int bg, BITMAP *bmp, int x, int y)
static int draw_glyphs (BITMAP *bmp, FONT *f, GLint format, int beg, int end, AGL_GLYPH *glyphs)

Variables

FONT_VTABLE _agl_font_vtable
FONT_VTABLE * font_vtable_agl = &_agl_font_vtable

Detailed Description

Allegro FONT conversion routines.

Notes: - Depends on the Allegro's FONT structure remaining intact. Bugs: - Bitmapped font support is flakey at best.

Definition in file fontconv.c.

Variable Documentation

FONT_VTABLE _agl_font_vtable

Initial value:

 {
    agl_get_font_height,
    agl_char_length,
    agl_text_length,
    NULL, 
    NULL, 
    allegro_gl_destroy_font,
    agl_get_font_ranges,
    agl_get_font_range_begin,
    agl_get_font_range_end,
    agl_extract_font_range,
    agl_merge_fonts,

    agl_transpose_font

}