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2010-01-10 Carles Pina i Estany <carles@pina.cat>

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* font/font.c: Include `ascii.h'.
	(ASCII_BITMAP_SIZE): New macro.
	(ascii_font_glyph): Define.
	(ascii_glyph_lookup): New function.
	(grub_font_get_string_width): Change comment. If glyph not found, use
	ascii_glyph_lookup.
	(grub_font_get_glyph_with_fallback): If glyph not available returns
	ascii_glyph_lookup.
	* util/grub-mkfont.c (file_formats): New enum.
	(options): Add `ascii-bitmaps' new option.
	(usage): Add `asii-bitmaps' new option.
	(write_font_ascii_bitmap): New function.
	(write_font): Rename to ...
	(write_font_p2): ... this. Remove print_glyphs call.
	(main): Use file_format. Implement code for ranges if ascii-bitmaps is
	used. Call print_glyphs.
	* Makefile.in (pkgdata_DATA): Add `font/ascii.h'.
This commit is contained in:
carles 2010-01-10 23:33:57 +00:00
parent f40f890a12
commit 26ba5c2262
4 changed files with 154 additions and 12 deletions
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61
font/font.c
View file

@ -17,6 +17,8 @@
* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
*/
#define GENERATE_ASCII
#include <grub/bufio.h>
#include <grub/dl.h>
#include <grub/file.h>
@ -27,6 +29,10 @@
#include <grub/video.h>
#include <grub/bitmap.h>
#ifdef GENERATE_ASCII
#include "ascii.h"
#endif
#ifndef FONT_DEBUG
#define FONT_DEBUG 0
#endif
@ -43,6 +49,7 @@ struct char_index_entry
#define FONT_WEIGHT_NORMAL 100
#define FONT_WEIGHT_BOLD 200
#define ASCII_BITMAP_SIZE 16
struct grub_font
{
@ -129,6 +136,48 @@ static struct grub_font null_font;
/* Flag to ensure module is initialized only once. */
static grub_uint8_t font_loader_initialized;
#ifdef GENERATE_ASCII
static struct grub_font_glyph *ascii_font_glyph[0x80];
#endif
static struct grub_font_glyph *
ascii_glyph_lookup (grub_uint32_t code)
{
#ifdef GENERATE_ASCII
static int ascii_failback_initialized = 0;
if (code >= 0x80)
return unknown_glyph;
if (ascii_failback_initialized == 0)
{
int current;
for (current = 0; current < 0x80; current++)
{
ascii_font_glyph[current] = grub_malloc(sizeof(struct grub_font_glyph)
+ ASCII_BITMAP_SIZE);
ascii_font_glyph[current]->width = 8;
ascii_font_glyph[current]->height = 16;
ascii_font_glyph[current]->offset_x = 0;
ascii_font_glyph[current]->offset_y = -2;
ascii_font_glyph[current]->device_width = 8;
grub_memcpy (ascii_font_glyph[current]->bitmap,
&ascii_bitmaps[(0x7f - current) * ASCII_BITMAP_SIZE],
ASCII_BITMAP_SIZE);
}
ascii_failback_initialized = 1;
}
return ascii_font_glyph[code];
#else
(void) code;
return unknown_glyph;
#endif
}
void
grub_font_loader_init (void)
{
@ -865,15 +914,17 @@ grub_font_get_string_width (grub_font_t font, const char *str)
}
/* Get the glyph for FONT corresponding to the Unicode code point CODE.
Returns a pointer to an glyph indicating there is no glyph available
if CODE does not exist in the font. The glyphs are cached once loaded. */
Returns the ASCII glyph for the code if no other fonts are available.
The glyphs are cached once loaded. */
struct grub_font_glyph *
grub_font_get_glyph (grub_font_t font, grub_uint32_t code)
{
struct grub_font_glyph *glyph;
glyph = grub_font_get_glyph_internal (font, code);
if (glyph == 0)
glyph = unknown_glyph;
{
glyph = ascii_glyph_lookup (code);
}
return glyph;
}
@ -968,8 +1019,8 @@ grub_font_get_glyph_with_fallback (grub_font_t font, grub_uint32_t code)
if (best_glyph)
return best_glyph;
else
/* Glyph not available in any font. Return unknown glyph. */
return unknown_glyph;
/* Glyph not available in any font. Return ASCII failback. */
return ascii_glyph_lookup (code);
}