1 /*
2 * `Soft' font definitions
3 *
4 * Created 1995 by Geert Uytterhoeven
5 * Rewritten 1998 by Martin Mares <mj@ucw.cz>
6 *
7 * 2001 - Documented with DocBook
8 * - Brad Douglas <brad@neruo.com>
9 *
10 * This file is subject to the terms and conditions of the GNU General Public
11 * License. See the file COPYING in the main directory of this archive
12 * for more details.
13 */
14
15 #include <linux/module.h>
16 #include <linux/types.h>
17 #include <linux/string.h>
18 #if defined(__mc68000__)
19 #include <asm/setup.h>
20 #endif
21 #include <linux/font.h>
22
23 static const struct font_desc *fonts[] = {
24 #ifdef CONFIG_FONT_8x8
25 &font_vga_8x8,
26 #endif
27 #ifdef CONFIG_FONT_8x16
28 &font_vga_8x16,
29 #endif
30 #ifdef CONFIG_FONT_6x11
31 &font_vga_6x11,
32 #endif
33 #ifdef CONFIG_FONT_7x14
34 &font_7x14,
35 #endif
36 #ifdef CONFIG_FONT_SUN8x16
37 &font_sun_8x16,
38 #endif
39 #ifdef CONFIG_FONT_SUN12x22
40 &font_sun_12x22,
41 #endif
42 #ifdef CONFIG_FONT_10x18
43 &font_10x18,
44 #endif
45 #ifdef CONFIG_FONT_ACORN_8x8
46 &font_acorn_8x8,
47 #endif
48 #ifdef CONFIG_FONT_PEARL_8x8
49 &font_pearl_8x8,
50 #endif
51 #ifdef CONFIG_FONT_MINI_4x6
52 &font_mini_4x6,
53 #endif
54 #ifdef CONFIG_FONT_6x10
55 &font_6x10,
56 #endif
57 #ifdef CONFIG_FONT_TER16x32
58 &font_ter_16x32,
59 #endif
60 #ifdef CONFIG_FONT_6x8
61 &font_6x8,
62 #endif
63 };
64
65 #define num_fonts ARRAY_SIZE(fonts)
66
67 #ifdef NO_FONTS
68 #error No fonts configured.
69 #endif
70
71
72 /**
73 * find_font - find a font
74 * @name: string name of a font
75 *
76 * Find a specified font with string name @name.
77 *
78 * Returns %NULL if no font found, or a pointer to the
79 * specified font.
80 *
81 */
82 const struct font_desc *find_font(const char *name)
83 {
84 unsigned int i;
85
86 BUILD_BUG_ON(!num_fonts);
87 for (i = 0; i < num_fonts; i++)
88 if (!strcmp(fonts[i]->name, name))
89 return fonts[i];
90 return NULL;
91 }
92 EXPORT_SYMBOL(find_font);
93
94
95 /**
96 * get_default_font - get default font
97 * @xres: screen size of X
98 * @yres: screen size of Y
99 * @font_w: bit array of supported widths (1 - FB_MAX_BLIT_WIDTH)
100 * @font_h: bit array of supported heights (1 - FB_MAX_BLIT_HEIGHT)
101 *
102 * Get the default font for a specified screen size.
103 * Dimensions are in pixels.
104 *
105 * font_w or font_h being NULL means all values are supported.
106 *
107 * Returns %NULL if no font is found, or a pointer to the
108 * chosen font.
109 *
110 */
111 const struct font_desc *get_default_font(int xres, int yres,
112 unsigned long *font_w,
113 unsigned long *font_h)
114 {
115 int i, c, cc, res;
116 const struct font_desc *f, *g;
117
118 g = NULL;
119 cc = -10000;
120 for (i = 0; i < num_fonts; i++) {
121 f = fonts[i];
122 c = f->pref;
123 #if defined(__mc68000__)
124 #ifdef CONFIG_FONT_PEARL_8x8
125 if (MACH_IS_AMIGA && f->idx == PEARL8x8_IDX)
126 c = 100;
127 #endif
128 #ifdef CONFIG_FONT_6x11
129 if (MACH_IS_MAC && xres < 640 && f->idx == VGA6x11_IDX)
130 c = 100;
131 #endif
132 #endif
133 if ((yres < 400) == (f->height <= 8))
134 c += 1000;
135
136 /* prefer a bigger font for high resolution */
137 res = (xres / f->width) * (yres / f->height) / 1000;
138 if (res > 20)
139 c += 20 - res;
140
141 if ((!font_w || test_bit(f->width - 1, font_w)) &&
142 (!font_h || test_bit(f->height - 1, font_h)))
143 c += 1000;
144
145 if (c > cc) {
146 cc = c;
147 g = f;
148 }
149 }
150 return g;
151 }
152 EXPORT_SYMBOL(get_default_font);
153
154 MODULE_AUTHOR("James Simmons <jsimmons@users.sf.net>");
155 MODULE_DESCRIPTION("Console Fonts");
156 MODULE_LICENSE("GPL");
157
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