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Diffstat (limited to 'lib/fonts/fonts.c')
| -rw-r--r-- | lib/fonts/fonts.c | 153 |
1 files changed, 153 insertions, 0 deletions
diff --git a/lib/fonts/fonts.c b/lib/fonts/fonts.c new file mode 100644 index 0000000000..9738664386 --- /dev/null +++ b/lib/fonts/fonts.c @@ -0,0 +1,153 @@ +/* + * `Soft' font definitions + * + * Created 1995 by Geert Uytterhoeven + * Rewritten 1998 by Martin Mares <mj@ucw.cz> + * + * 2001 - Documented with DocBook + * - Brad Douglas <brad@neruo.com> + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file COPYING in the main directory of this archive + * for more details. + */ + +#include <linux/module.h> +#include <linux/types.h> +#include <linux/string.h> +#if defined(__mc68000__) +#include <asm/setup.h> +#endif +#include <linux/font.h> + +static const struct font_desc *fonts[] = { +#ifdef CONFIG_FONT_8x8 + &font_vga_8x8, +#endif +#ifdef CONFIG_FONT_8x16 + &font_vga_8x16, +#endif +#ifdef CONFIG_FONT_6x11 + &font_vga_6x11, +#endif +#ifdef CONFIG_FONT_7x14 + &font_7x14, +#endif +#ifdef CONFIG_FONT_SUN8x16 + &font_sun_8x16, +#endif +#ifdef CONFIG_FONT_SUN12x22 + &font_sun_12x22, +#endif +#ifdef CONFIG_FONT_10x18 + &font_10x18, +#endif +#ifdef CONFIG_FONT_ACORN_8x8 + &font_acorn_8x8, +#endif +#ifdef CONFIG_FONT_PEARL_8x8 + &font_pearl_8x8, +#endif +#ifdef CONFIG_FONT_MINI_4x6 + &font_mini_4x6, +#endif +#ifdef CONFIG_FONT_6x10 + &font_6x10, +#endif +#ifdef CONFIG_FONT_TER16x32 + &font_ter_16x32, +#endif +#ifdef CONFIG_FONT_6x8 + &font_6x8, +#endif +}; + +#define num_fonts ARRAY_SIZE(fonts) + +#ifdef NO_FONTS +#error No fonts configured. +#endif + + +/** + * find_font - find a font + * @name: string name of a font + * + * Find a specified font with string name @name. + * + * Returns %NULL if no font found, or a pointer to the + * specified font. + * + */ +const struct font_desc *find_font(const char *name) +{ + unsigned int i; + + BUILD_BUG_ON(!num_fonts); + for (i = 0; i < num_fonts; i++) + if (!strcmp(fonts[i]->name, name)) + return fonts[i]; + return NULL; +} +EXPORT_SYMBOL(find_font); + + +/** + * get_default_font - get default font + * @xres: screen size of X + * @yres: screen size of Y + * @font_w: bit array of supported widths (1 - 32) + * @font_h: bit array of supported heights (1 - 32) + * + * Get the default font for a specified screen size. + * Dimensions are in pixels. + * + * Returns %NULL if no font is found, or a pointer to the + * chosen font. + * + */ +const struct font_desc *get_default_font(int xres, int yres, u32 font_w, + u32 font_h) +{ + int i, c, cc, res; + const struct font_desc *f, *g; + + g = NULL; + cc = -10000; + for (i = 0; i < num_fonts; i++) { + f = fonts[i]; + c = f->pref; +#if defined(__mc68000__) +#ifdef CONFIG_FONT_PEARL_8x8 + if (MACH_IS_AMIGA && f->idx == PEARL8x8_IDX) + c = 100; +#endif +#ifdef CONFIG_FONT_6x11 + if (MACH_IS_MAC && xres < 640 && f->idx == VGA6x11_IDX) + c = 100; +#endif +#endif + if ((yres < 400) == (f->height <= 8)) + c += 1000; + + /* prefer a bigger font for high resolution */ + res = (xres / f->width) * (yres / f->height) / 1000; + if (res > 20) + c += 20 - res; + + if ((font_w & (1U << (f->width - 1))) && + (font_h & (1U << (f->height - 1)))) + c += 1000; + + if (c > cc) { + cc = c; + g = f; + } + } + return g; +} +EXPORT_SYMBOL(get_default_font); + +MODULE_AUTHOR("James Simmons <jsimmons@users.sf.net>"); +MODULE_DESCRIPTION("Console Fonts"); +MODULE_LICENSE("GPL"); |