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 | |