/* vga-dynafont.c - Dynamic font handling for VGA cards. Copyright (C) 2002, 2010 Free Software Foundation, Inc. Written by Marcus Brinkmann. This file is part of the GNU Hurd. The GNU Hurd is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2, or (at your option) any later version. The GNU Hurd is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA. */ #include #include #include #include #include #include #include #include #include "vga-hw.h" #include "vga-support.h" #include "bdf.h" #include "vga-dynafont.h" #include "unicode.h" /* The currently active (visible) dynafont. The original idea was to use some sort of caching for multiple dynafonts using the 8 font buffers on the graphic card, but the new idea is to share a common state among all virtual consoles and do a full refresh on switching. However, bits and pieces of the old idea are still present, in case they become useful. */ static dynafont_t active_dynafont; /* One glyph in a VGA font is 8 pixels wide and 32 pixels high. Only the first N lines are visible, and N depends on the VGA register settings. */ typedef char vga_font_glyph[VGA_FONT_HEIGHT]; /* For each glyph in the VGA font, one instance of this structure is held in the dynafont. */ struct mapped_character { /* Reference count of the mapped character. If this drops zero, we can remove the mapping at any time. */ int refs; /* Remember the character this glyph belongs to, so the glyph can be reloaded when the font is changed. This is actually a wchar_t with some text attributes mixed into the high bits. */ #define WCHAR_BOLD ((wchar_t) 0x20000000) #define WCHAR_ITALIC ((wchar_t) 0x10000000) #define WCHAR_MASK CONS_WCHAR_MASK wchar_t character; /* Used by libihash for fast removal of elements. */ hurd_ihash_locp_t locp; }; struct dynafont { /* The sorted font to take the glyphs from. */ bdf_font_t font; /* The sorted font to take the italic glyphs from. */ bdf_font_t font_italic; /* The sorted font to take the bold glyphs from. */ bdf_font_t font_bold; /* The sorted font to take the bold and italic glyphs from. */ bdf_font_t font_bold_italic; /* The size of the VGA font (256 or 512). Must be a power of 2! */ int size; /* The width of the VGA font (8 or 9). */ int width; /* A hash containing a pointer to a struct mapped_character for each UCS-4 character we map to a VGA font index. */ struct hurd_ihash charmap; /* The struct mapped_characters are preallocated for all vga font index values. This points to an array of SIZE such elements. */ struct mapped_character *charmap_data; /* The last vga font index that had been free (or could be reused). */ int vga_font_last_free_index; /* The number of free slots in the VGA font. */ int vga_font_free_indices; int use_lgc; /* The last vga font index that had been free (or could be reused) for horizontal line graphic characters. */ int vga_font_last_free_index_lgc; /* The number of free slots in the VGA font for horizontal line graphic charactes. */ int vga_font_free_indices_lgc; /* The font memory as stored on the card. */ vga_font_glyph *vga_font; /* The cursor size, standout or normal. */ int cursor_standout; }; /* The VGA standard font follows IBM code page 437. The following table maps this to unicode. For simplicity, a 1:1 mapping is assumed. Ambiguities are special cased in create_system_font. */ static wchar_t ibm437_to_unicode[VGA_FONT_SIZE] = { 0, /* 0x00 */ UNICODE_WHITE_SMILING_FACE, /* 0x01 */ UNICODE_BLACK_SMILING_FACE, /* 0x02 */ UNICODE_BLACK_HEART_SUIT, /* 0x03 */ UNICODE_BLACK_DIAMOND_SUIT, /* 0x04 */ UNICODE_BLACK_CLUB_SUIT, /* 0x05 */ UNICODE_BLACK_SPADE_SUIT, /* 0x06 */ UNICODE_BULLET, /* 0x07 */ UNICODE_INVERSE_BULLET, /* 0x08 */ UNICODE_WHITE_CIRCLE, /* 0x09 */ UNICODE_INVERSE_WHITE_CIRCLE, /* 0x0a */ UNICODE_MALE_SIGN, /* 0x0b */ UNICODE_FEMALE_SIGN, /* 0x0c */ UNICODE_EIGHTH_NOTE, /* 0x0d */ UNICODE_BEAMED_EIGHTH_NOTES, /* 0x0e */ UNICODE_WHITE_SUN_WITH_RAYS, /* 0x0f */ UNICODE_BLACK_RIGHT_POINTING_TRIANGLE, /* 0x10 */ UNICODE_BLACK_LEFT_POINTING_TRIANGLE, /* 0x11 */ UNICODE_UP_DOWN_ARROW, /* 0x12 */ UNICODE_DOUBLE_EXCLAMATION_MARK, /* 0x13 */ UNICODE_PILCROW_SIGN, /* 0x14 */ UNICODE_SECTION_SIGN, /* 0x15 */ UNICODE_BLACK_RECTANGLE, /* 0x16 */ UNICODE_UP_DOWN_ARROW_WITH_BASE, /* 0x17 */ UNICODE_UPWARDS_ARROW, /* 0x18 */ UNICODE_DOWNWARDS_ARROW, /* 0x19 */ UNICODE_RIGHTWARDS_ARROW, /* 0x1a */ UNICODE_LEFTWARDS_ARROW, /* 0x1b */ UNICODE_RIGHT_ANGLE, /* 0x1c */ UNICODE_LEFT_RIGHT_ARROW, /* 0x1d */ UNICODE_BLACK_UP_POINTING_TRIANGLE, /* 0x1e */ UNICODE_BLACK_DOWN_POINTING_TRIANGLE, /* 0x1f */ ' ', '!', '"', '#', '$', '%', '&', '\'', /* 0x20 - 0x27 */ '(', ')', '*', '+', ',', '-', '.', '/', /* 0x28 - 0x2f */ '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', /* 0x30 - 0x37 */ ':', ';', '<', '=', '>', '?', /* 0x38 - 0x3f */ '@', 'A', 'B', 'C', 'D', 'E', 'F', 'G', /* 0x40 - 0x47 */ 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', /* 0x48 - 0x4f */ 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', /* 0x50 - 0x57 */ 'X', 'Y', 'Z', '[', '\\', ']', '^', '_', /* 0x58 - 0x5f */ '`', 'a', 'b', 'c', 'd', 'e', 'f', 'g', /* 0x60 - 0x67 */ 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', /* 0x68 - 0x6f */ 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', /* 0x70 - 0x77 */ 'x', 'y', 'z', '{', '|', '}', '~', UNICODE_HOUSE, /* 0x78 - 0x7f */ UNICODE_LATIN_CAPITAL_LETTER_C_WITH_CEDILLA, /* 0x80 */ UNICODE_LATIN_SMALL_LETTER_U_WITH_DIARESIS, /* 0x81 */ UNICODE_LATIN_SMALL_LETTER_E_WITH_ACUTE, /* 0x82 */ UNICODE_LATIN_SMALL_LETTER_A_WITH_CIRCUMFLEX, /* 0x83 */ UNICODE_LATIN_SMALL_LETTER_A_WITH_DIARESIS, /* 0x84 */ UNICODE_LATIN_SMALL_LETTER_A_WITH_GRAVE, /* 0x85 */ UNICODE_LATIN_SMALL_LETTER_A_WITH_RING_ABOVE, /* 0x86 */ UNICODE_LATIN_SMALL_LETTER_C_WITH_CEDILLA, /* 0x87 */ UNICODE_LATIN_SMALL_LETTER_E_WITH_CIRCUMFLEX, /* 0x88 */ UNICODE_LATIN_SMALL_LETTER_E_WITH_DIARESIS, /* 0x89 */ UNICODE_LATIN_SMALL_LETTER_E_WITH_GRAVE, /* 0x8a */ UNICODE_LATIN_SMALL_LETTER_I_WITH_DIARESIS, /* 0x8b */ UNICODE_LATIN_SMALL_LETTER_I_WITH_CIRCUMFLEX, /* 0x8c */ UNICODE_LATIN_SMALL_LETTER_I_WITH_GRAVE, /* 0x8d */ UNICODE_LATIN_CAPITAL_LETTER_A_WITH_DIARESIS, /* 0x8e */ UNICODE_LATIN_CAPITAL_LETTER_A_WITH_RING_ABOVE, /* 0x8f */ UNICODE_LATIN_CAPITAL_LETTER_E_WITH_ACUTE, /* 0x90 */ UNICODE_LATIN_SMALL_LETTER_AE, /* 0x91 */ UNICODE_LATIN_CAPITAL_LETTER_AE, /* 0x92 */ UNICODE_LATIN_SMALL_LETTER_O_WITH_CIRCUMFLEX, /* 0x93 */ UNICODE_LATIN_SMALL_LETTER_O_WITH_DIARESIS, /* 0x94 */ UNICODE_LATIN_SMALL_LETTER_O_WITH_GRAVE, /* 0x95 */ UNICODE_LATIN_SMALL_LETTER_U_WITH_CIRCUMFLEX, /* 0x96 */ UNICODE_LATIN_SMALL_LETTER_U_WITH_GRAVE, /* 0x97 */ UNICODE_LATIN_SMALL_LETTER_Y_WITH_DIARESIS, /* 0x98 */ UNICODE_LATIN_CAPITAL_LETTER_O_WITH_DIARESIS, /* 0x99 */ UNICODE_LATIN_CAPITAL_LETTER_U_WITH_DIARESIS, /* 0x9a */ UNICODE_CENT_SIGN, /* 0x9b */ UNICODE_POUND_SIGN, /* 0x9c */ UNICODE_YEN_SIGN, /* 0x9d */ UNICODE_PESETA_SIGN, /* 0x9e */ UNICODE_LATIN_SMALL_LETTER_F_WITH_HOOK, /* 0x9f */ UNICODE_LATIN_SMALL_LETTER_A_WITH_ACUTE, /* 0xa0 */ UNICODE_LATIN_SMALL_LETTER_I_WITH_ACUTE, /* 0xa1 */ UNICODE_LATIN_SMALL_LETTER_O_WITH_ACUTE, /* 0xa2 */ UNICODE_LATIN_SMALL_LETTER_U_WITH_ACUTE, /* 0xa3 */ UNICODE_LATIN_SMALL_LETTER_N_WITH_TILDE, /* 0xa4 */ UNICODE_LATIN_CAPITAL_LETTER_N_WITH_TILDE, /* 0xa5 */ UNICODE_FEMININE_ORDINAL_INDICATOR, /* 0xa6 */ UNICODE_MASCULINE_ORDINAL_INDICATOR, /* 0xa7 */ UNICODE_INVERTED_QUESTION_MARK, /* 0xa8 */ UNICODE_REVERSED_NOT_SIGN, /* 0xa9 */ UNICODE_NOT_SIGN, /* 0xaa */ UNICODE_VULGAR_FRACTION_ONE_HALF, /* 0xab */ UNICODE_VULGAR_FRACTION_ONE_QUARTER, /* 0xac */ UNICODE_INVERTED_EXCLAMATION_MARK, /* 0xad */ UNICODE_LEFT_POINTING_DOUBLE_ANGLE_QUOTATION_MARK, /* 0xae */ UNICODE_RIGHT_POINTING_DOUBLE_ANGLE_QUOTATION_MARK, /* 0xaf */ UNICODE_LIGHT_SHADE, /* 0xb0 */ UNICODE_MEDIUM_SHADE, /* 0xb1 */ UNICODE_DARK_SHADE, /* 0xb2 */ UNICODE_BOX_DRAWINGS_LIGHT_VERTICAL, /* 0xb3 */ UNICODE_BOX_DRAWINGS_LIGHT_VERTICAL_AND_LEFT, /* 0xb4 */ UNICODE_BOX_DRAWINGS_VERTICAL_SINGLE_AND_LEFT_DOUBLE, /* 0xb5 */ UNICODE_BOX_DRAWINGS_VERTICAL_DOUBLE_AND_LEFT_SINGLE, /* 0xb6 */ UNICODE_BOX_DRAWINGS_DOWN_DOUBLE_AND_LEFT_SINGLE, /* 0xb7 */ UNICODE_BOX_DRAWINGS_DOWN_SINGLE_AND_LEFT_DOUBLE, /* 0xb8 */ UNICODE_BOX_DRAWINGS_DOUBLE_VERTICAL_AND_LEFT, /* 0xb9 */ UNICODE_BOX_DRAWINGS_DOUBLE_VERTICAL, /* 0xba */ UNICODE_BOX_DRAWINGS_DOUBLE_DOWN_AND_LEFT, /* 0xbb */ UNICODE_BOX_DRAWINGS_DOUBLE_UP_AND_LEFT, /* 0xbc */ UNICODE_BOX_DRAWINGS_UP_DOUBLE_AND_LEFT_SINGLE, /* 0xbd */ UNICODE_BOX_DRAWINGS_UP_SINGLE_AND_LEFT_DOUBLE, /* 0xbe */ UNICODE_BOX_DRAWINGS_LIGHT_DOWN_AND_LEFT, /* 0xbf */ UNICODE_BOX_DRAWINGS_LIGHT_UP_AND_RIGHT, /* 0xc0 */ UNICODE_BOX_DRAWINGS_LIGHT_UP_AND_HORIZONTAL, /* 0xc1 */ UNICODE_BOX_DRAWINGS_LIGHT_DOWN_AND_HORIZONTAL, /* 0xc2 */ UNICODE_BOX_DRAWINGS_LIGHT_VERTICAL_AND_RIGHT, /* 0xc3 */ UNICODE_BOX_DRAWINGS_LIGHT_HORIZONTAL, /* 0xc4 */ UNICODE_BOX_DRAWINGS_LIGHT_VERTICAL_AND_HORIZONTAL, /* 0xc5 */ UNICODE_BOX_DRAWINGS_VERTICAL_SINGLE_AND_RIGHT_DOUBLE, /* 0xc6 */ UNICODE_BOX_DRAWINGS_VERTICAL_DOUBLE_AND_RIGHT_SINGLE, /* 0xc7 */ UNICODE_BOX_DRAWINGS_DOUBLE_UP_AND_RIGHT, /* 0xc8 */ UNICODE_BOX_DRAWINGS_DOUBLE_DOWN_AND_RIGHT, /* 0xc9 */ UNICODE_BOX_DRAWINGS_DOUBLE_UP_AND_HORIZONTAL, /* 0xca */ UNICODE_BOX_DRAWINGS_DOUBLE_DOWN_AND_HORIZONTAL, /* 0xcb */ UNICODE_BOX_DRAWINGS_DOUBLE_VERTICAL_AND_RIGHT, /* 0xcc */ UNICODE_BOX_DRAWINGS_DOUBLE_HORIZONTAL, /* 0xcd */ UNICODE_BOX_DRAWINGS_DOUBLE_VERTICAL_AND_HORIZONTAL,/* 0xce */ UNICODE_BOX_DRAWINGS_UP_SINGLE_AND_HORIZONTAL_DOUBLE, /* 0xcf */ UNICODE_BOX_DRAWINGS_UP_DOUBLE_AND_HORIZONTAL_SINGLE, /* 0xd0 */ UNICODE_BOX_DRAWINGS_DOWN_SINGLE_AND_HORIZONTAL_DOUBLE, /* 0xd1 */ UNICODE_BOX_DRAWINGS_DOWN_DOUBLE_AND_HORIZONTAL_SINGLE, /* 0xd2 */ UNICODE_BOX_DRAWINGS_UP_DOUBLE_AND_RIGHT_SINGLE, /* 0xd3 */ UNICODE_BOX_DRAWINGS_UP_SINGLE_AND_RIGHT_DOUBLE, /* 0xd4 */ UNICODE_BOX_DRAWINGS_DOWN_SINGLE_AND_RIGHT_DOUBLE, /* 0xd5 */ UNICODE_BOX_DRAWINGS_DOWN_DOUBLE_AND_RIGHT_SINGLE, /* 0xd6 */ UNICODE_BOX_DRAWINGS_VERTICAL_DOUBLE_AND_HORIZONTAL_SINGLE, /* 0xd7 */ UNICODE_BOX_DRAWINGS_VERTICAL_SINGLE_AND_HORIZONTAL_DOUBLE, /* 0xd8 */ UNICODE_BOX_DRAWINGS_LIGHT_UP_AND_LEFT, /* 0xd9 */ UNICODE_BOX_DRAWINGS_LIGHT_DOWN_AND_RIGHT, /* 0xda */ UNICODE_FULL_BLOCK, /* 0xdb */ UNICODE_LOWER_HALF_BLOCK, /* 0xdc */ UNICODE_LEFT_HALF_BLOCK, /* 0xdd */ UNICODE_RIGHT_HALF_BLOCK, /* 0xde */ UNICODE_UPPER_HALF_BLOCK, /* 0xdf */ UNICODE_GREEK_SMALL_LETTER_ALPHA, /* 0xe0 */ /* The next one: Also sz-ligature. */ UNICODE_GREEK_SMALL_LETTER_BETA, /* 0xe1 */ UNICODE_GREEK_CAPITAL_LETTER_GAMMA, /* 0xe2 */ UNICODE_GREEK_SMALL_LETTER_PI, /* 0xe3 */ UNICODE_GREEK_CAPITAL_LETTER_SIGMA, /* 0xe4 */ UNICODE_GREEK_SMALL_LETTER_SIGMA, /* 0xe5 */ /* The next one: Also micro. */ UNICODE_GREEK_SMALL_LETTER_MU, /* 0xe6 */ UNICODE_GREEK_SMALL_LETTER_TAU, /* 0xe7 */ UNICODE_GREEK_CAPITAL_LETTER_PHI, /* 0xe8 */ UNICODE_GREEK_CAPITAL_LETTER_OMICRON, /* 0xe9 */ UNICODE_GREEK_CAPITAL_LETTER_OMEGA, /* 0xea */ UNICODE_GREEK_SMALL_LETTER_DELTA, /* 0xeb */ UNICODE_INFINITY, /* 0xec */ UNICODE_GREEK_SMALL_LETTER_PHI, /* 0xed */ UNICODE_GREEK_SMALL_LETTER_EPSILON, /* 0xee */ UNICODE_INTERSECTION, /* 0xef */ UNICODE_IDENTICAL_TO, /* 0xf0 */ UNICODE_PLUS_MINUS_SIGN, /* 0xf1 */ UNICODE_GREATER_THAN_OR_EQUAL_TO, /* 0xf2 */ UNICODE_LESS_THAN_OR_EQUAL_TO, /* 0xf3 */ UNICODE_TOP_HALF_INTEGRAL, /* 0xf4 */ UNICODE_BOTTOM_HALF_INTEGRAL, /* 0xf5 */ UNICODE_DIVISION_SIGN, /* 0xf6 */ UNICODE_ALMOST_EQUAL_TO, /* 0xf7 */ UNICODE_DEGREE_SIGN, /* 0xf8 */ UNICODE_BULLET_OPERATOR, /* 0xf9 */ UNICODE_MIDDLE_DOT, /* 0xfa */ UNICODE_SQUARE_ROOT, /* 0xfb */ UNICODE_SUPERSCRIPT_LATIN_SMALL_LETTER, /* 0xfc */ UNICODE_SUPERSCRIPT_TWO, /* 0xfd */ UNICODE_BLACK_SQUARE, /* 0xfe */ UNICODE_NO_BREAK_SPACE /* 0xff */ }; /* Read the VGA card's memory as IBM 437 font and create a Unicode BDF font from it. If an error occurs, errno is set and NULL is returned. */ static bdf_font_t create_system_font (void) { bdf_error_t bdferr; bdf_font_t font; unsigned char bitmap[VGA_FONT_SIZE][VGA_FONT_HEIGHT]; /* 8kB on stack. */ int width = vga_get_font_width (); int i; /* Add the glyph at position POS to the font for character ENCODING. */ void vga_add_glyph (int pos, int encoding) { char name[16]; snprintf (name, sizeof (name), "VGA %i", pos); if (width == 8) bdferr = bdf_add_glyph (font, name, encoding, 0, 8, 16, 0, 0, bitmap[pos]); else { int i; char glyph_bitmap[32]; for (i = 0; i < 16; i++) { glyph_bitmap[i * 2] = bitmap[pos][i]; if (pos >= VGA_FONT_LGC_BEGIN && pos < VGA_FONT_LGC_BEGIN + VGA_FONT_LGC_COUNT) glyph_bitmap[i * 2 + 1] = (bitmap[pos][i] & 1) ? 0x80 : 0; else glyph_bitmap[i * 2 + 1] = 0; } bdferr = bdf_add_glyph (font, name, encoding, 0, 9, 16, 0, 0, glyph_bitmap); } } /* The point size and resolution is arbitrary. */ bdferr = bdf_new (&font, 2, 2, "vga-system", 10, 100, 100, width, 16, 0, 0, 0); if (bdferr) { if (bdferr != BDF_SYSTEM_ERROR) errno = EGRATUITOUS; return NULL; } vga_read_font_buffer (0, 0, (unsigned char *) bitmap, VGA_FONT_SIZE * VGA_FONT_HEIGHT); for (i = 0; i < VGA_FONT_SIZE; i++) if (ibm437_to_unicode[i]) { vga_add_glyph (i, ibm437_to_unicode[i]); if (bdferr) break; /* Some glyphs are ambivalent. */ if (ibm437_to_unicode[i] == UNICODE_GREEK_SMALL_LETTER_BETA) vga_add_glyph (i, UNICODE_LATIN_SMALL_LETTER_SHARP_S); else if (ibm437_to_unicode[i] == UNICODE_GREEK_SMALL_LETTER_MU) vga_add_glyph (i, UNICODE_MICRO_SIGN); if (bdferr) break; } if (bdferr) { bdf_destroy (font); if (bdferr != BDF_SYSTEM_ERROR) errno = EGRATUITOUS; return NULL; } return font; } #if QUAERENDO_INVENIETIS #define GNU_HEAD_BEGIN (UNICODE_PRIVATE_USE_AREA + 0x0f00) static void add_gnu_head (bdf_font_t font) { #define GNU_HEAD_WIDTH 6 static unsigned char gnu_head[][GNU_HEAD_WIDTH] = { { 255, 255, 255, 255, 255, 255 }, { 255, 0, 127, 255, 252, 31 }, { 252, 0, 31, 255, 224, 7 }, { 248, 0, 7, 255, 0, 3 }, { 240, 0, 15, 255, 128, 3 }, { 240, 31, 255, 255, 252, 1 }, { 224, 63, 241, 255, 255, 1 }, { 192, 127, 128, 96, 255, 129 }, { 192, 255, 0, 0, 63, 193 }, { 192, 254, 0, 0, 31, 193 }, { 192, 252, 0, 0, 15, 193 }, { 192, 248, 0, 0, 15, 193 }, { 192, 248, 0, 0, 7, 129 }, { 192, 96, 63, 131, 192, 1 }, { 192, 1, 227, 98, 112, 1 }, { 192, 3, 195, 244, 176, 3 }, { 224, 7, 221, 125, 248, 3 }, { 240, 15, 184, 124, 120, 7 }, { 240, 15, 248, 124, 60, 15 }, { 248, 15, 220, 254, 124, 127 }, { 252, 31, 223, 255, 254, 127 }, { 255, 159, 159, 255, 31, 191 }, { 255, 223, 159, 255, 35, 63 }, { 255, 191, 127, 195, 152, 127 }, { 255, 188, 255, 156, 199, 255 }, { 255, 96, 253, 134, 115, 255 }, { 254, 134, 251, 227, 251, 255 }, { 254, 46, 254, 249, 251, 255 }, { 255, 238, 126, 127, 231, 255 }, { 255, 239, 127, 127, 207, 255 }, { 255, 239, 63, 63, 231, 255 }, { 255, 247, 159, 158, 15, 255 }, { 255, 247, 207, 193, 159, 255 }, { 255, 247, 223, 255, 223, 255 }, { 255, 243, 199, 252, 31, 255 }, { 255, 251, 227, 224, 63, 255 }, { 255, 253, 241, 240, 255, 255 }, { 255, 252, 244, 126, 255, 255 }, { 255, 254, 121, 122, 255, 255 }, { 255, 255, 252, 48, 255, 255 }, { 255, 255, 252, 35, 255, 255 }, { 255, 255, 249, 1, 127, 255 }, { 255, 255, 251, 0, 127, 255 }, { 255, 255, 255, 128, 255, 255 }, { 255, 255, 255, 255, 255, 255 } }; /* Height of a single glyph, truncated to fit VGA glyph slot. */ int height = (font->bbox.height > 32) ? 32 : font->bbox.height; /* Width of a single glyph in byte. */ int width = (font->bbox.width + 7) / 8; /* Number of rows in bitmap. */ int rows = sizeof (gnu_head) / sizeof (gnu_head[0]); /* Number of rows of glyphs necessary. */ int nr = (rows + height - 1) / height; int row, col; /* Check that all those glyphs are free in the private area. */ if (nr * GNU_HEAD_WIDTH > GNU_HEAD_BEGIN - UNICODE_PRIVATE_USE_AREA + 1) return; for (int i = 0; i < nr * GNU_HEAD_WIDTH; i++) if (bdf_find_glyph (font, (int) GNU_HEAD_BEGIN + i, 0) || bdf_find_glyph (font, -1, (int) GNU_HEAD_BEGIN + i)) return; for (row = 0; row < nr; row++) for (col = 0; col < GNU_HEAD_WIDTH; col++) { char bitmap[font->bbox.height][width]; char name[] = "GNU Head .........."; /* strlen ("GNU Head ") == 9. */ sprintf (&name[9], "%i", row * GNU_HEAD_WIDTH + col); memset (bitmap, 0, sizeof (bitmap)); for (int j = 0; j < height && row * height + j < rows; j++) bitmap[j][0] = gnu_head[row * height + j][col]; if (bdf_add_glyph (font, name, GNU_HEAD_BEGIN + row * GNU_HEAD_WIDTH + col, 0, font->bbox.width, font->bbox.height, 0, 0, (unsigned char *) bitmap)) return; } } #endif /* Create a new dynafont object, which uses glyphs from the font FONT (which should be 8 or 9 pixels wide and 13 to 16 pixels high). SIZE is either 256 or 512, and specifies the number of available glyphs in the font cache. The object is returned in DYNAFONT. The font is consumed. If FONT is the null pointer, the VGA card's memory is converted to a font according to the VGA default map (IBM Code Page 437). */ error_t dynafont_new (bdf_font_t font, bdf_font_t font_italic, bdf_font_t font_bold, bdf_font_t font_bold_italic, int size, int width, dynafont_t *dynafont) { dynafont_t df; struct bdf_glyph *glyph = NULL; if (!font) font = create_system_font (); if (!font || !font->bbox.height) return errno; if (!width) width = font->bbox.width; if ((width % 8) == 0) width = 8; if (width != 8 && width != 9) return EINVAL; df = malloc (sizeof *df); if (!df) return ENOMEM; #if QUAERENDO_INVENIETIS add_gnu_head (font); #endif bdf_sort_glyphs (font); df->font = font; df->font_italic = font_italic; df->font_bold = font_bold; df->font_bold_italic = font_bold_italic; df->size = size; df->width = width; df->cursor_standout = 0; df->charmap_data = calloc (size, sizeof (struct mapped_character)); if (!df->charmap_data) { free (df); return ENOMEM; } df->vga_font = malloc (sizeof (vga_font_glyph) * size); if (!df->vga_font) { free (df->charmap_data); free (df); return ENOMEM; } hurd_ihash_init (&df->charmap, offsetof (struct mapped_character, locp)); if (width == 9) { /* 32 from 256 font slots are for horizontal line graphic characters. */ df->use_lgc = 1; df->vga_font_free_indices = df->size - (df->size / 256) * VGA_FONT_LGC_COUNT; df->vga_font_last_free_index = 0; df->vga_font_free_indices_lgc = (df->size / 256) * VGA_FONT_LGC_COUNT; df->vga_font_last_free_index_lgc = VGA_FONT_LGC_BEGIN; } else { df->use_lgc = 0; df->vga_font_free_indices = df->size; df->vga_font_last_free_index = 0; df->vga_font_free_indices_lgc = 0; df->vga_font_last_free_index_lgc = 0; } /* Ensure that ASCII is always available 1-to-1, for kernel messages. */ for (int c = ' '; c <= '~'; c++) { glyph = bdf_find_glyph (df->font, c, 0); if (!glyph) glyph = bdf_find_glyph (df->font, -1, c); if (glyph) { struct mapped_character *chr = &df->charmap_data[c]; df->vga_font_free_indices--; chr->refs = 1; for (int i = 0; i < ((glyph->bbox.height > 32) ? 32 : glyph->bbox.height); i++) df->vga_font[c][i] = glyph->bitmap[i * ((glyph->bbox.width + 7) / 8)]; if (glyph->bbox.height < 32) memset (((char *) df->vga_font[c]) + glyph->bbox.height, 0, 32 - glyph->bbox.height); /* Update the hash table. */ hurd_ihash_add (&df->charmap, c, chr); } } /* Ensure that we always have the replacement character available. */ { struct mapped_character *chr = &df->charmap_data[FONT_INDEX_UNKNOWN]; df->vga_font_free_indices--; chr->refs = 1; glyph = bdf_find_glyph (df->font, UNICODE_REPLACEMENT_CHARACTER, 0); if (!glyph) glyph = bdf_find_glyph (df->font, -1, UNICODE_REPLACEMENT_CHARACTER); if (glyph) { for (int i = 0; i < ((glyph->bbox.height > 32) ? 32 : glyph->bbox.height); i++) df->vga_font[FONT_INDEX_UNKNOWN][i] = glyph->bitmap[i * ((glyph->bbox.width + 7) / 8)]; if (glyph->bbox.height < 32) memset (((char *) df->vga_font[FONT_INDEX_UNKNOWN]) + glyph->bbox.height, 0, 32 - glyph->bbox.height); /* Update the hash table. */ hurd_ihash_add (&df->charmap, UNICODE_REPLACEMENT_CHARACTER, chr); } else { int i; char *gl = df->vga_font[FONT_INDEX_UNKNOWN]; /* XXX Take font height into account. */ gl[0] = 0x7E; /* ****** */ gl[1] = 0xC3; /* ** ** */ gl[2] = 0x99; /* * ** * */ gl[3] = 0x99; /* * ** * */ gl[4] = 0xF9; /* ***** * */ gl[5] = 0xF3; /* **** ** */ gl[6] = 0xF3; /* *** *** */ gl[7] = 0xE7; /* *** *** */ gl[8] = 0xFF; /* ******** */ gl[9] = 0xE7; /* *** *** */ gl[10] = 0xE7; /* *** *** */ gl[11] = 0x7E; /* ****** */ for (i = 12; i < 32; i++) gl[i] = 0; } } *dynafont = df; return 0; } /* Release a dynafont object and its associated resources. */ void dynafont_free (dynafont_t df) { if (active_dynafont == df) active_dynafont = NULL; bdf_destroy (df->font); if (df->font_italic) bdf_destroy (df->font_italic); if (df->font_bold) bdf_destroy (df->font_bold); if (df->font_bold_italic) bdf_destroy (df->font_bold_italic); hurd_ihash_destroy (&df->charmap); free (df->charmap_data); free (df->vga_font); free (df); } /* Determine if CHR is a character that needs to be continuous in the horizontal direction by repeating the last (eighth) column in 9-pixel-width mode. */ static inline int is_lgc (wchar_t chr) { /* This list must be sorted for bsearch! */ static wchar_t horiz_glyphs[] = { UNICODE_BOX_DRAWINGS_LIGHT_HORIZONTAL, /* 0x2500 */ UNICODE_BOX_DRAWINGS_HEAVY_HORIZONTAL, /* 0x2501 */ UNICODE_BOX_DRAWINGS_LIGHT_DOWN_AND_RIGHT, /* 0x250c */ UNICODE_BOX_DRAWINGS_DOWN_LIGHT_AND_RIGHT_HEAVY, /* 0x250d */ UNICODE_BOX_DRAWINGS_DOWN_HEAVY_AND_RIGHT_LIGHT, /* 0x250e */ UNICODE_BOX_DRAWINGS_HEAVY_DOWN_AND_RIGHT, /* 0x250f */ UNICODE_BOX_DRAWINGS_LIGHT_UP_AND_RIGHT, /* 0x2514 */ UNICODE_BOX_DRAWINGS_UP_LIGHT_AND_RIGHT_HEAVY, /* 0x2515 */ UNICODE_BOX_DRAWINGS_UP_HEAVY_AND_RIGHT_LIGHT, /* 0x2516 */ UNICODE_BOX_DRAWINGS_HEAVY_UP_AND_RIGHT, /* 0x2517 */ UNICODE_BOX_DRAWINGS_LIGHT_VERTICAL_AND_RIGHT, /* 0x251c */ UNICODE_BOX_DRAWINGS_VERTICAL_LIGHT_AND_RIGHT_HEAVY, /* 0x251d */ UNICODE_BOX_DRAWINGS_UP_HEAVY_AND_RIGHT_UP_LIGHT, /* 0x251e */ UNICODE_BOX_DRAWINGS_DOWN_HEAVY_AND_RIGHT_UP_LIGHT, /* 0x251f */ UNICODE_BOX_DRAWINGS_VERTICAL_HEAVY_AND_RIGHT_LIGHT, /* 0x2520 */ UNICODE_BOX_DRAWINGS_DOWN_LIGHT_AND_RIGHT_UP_HEAVY, /* 0x2521 */ UNICODE_BOX_DRAWINGS_UP_LIGHT_AND_RIGHT_DOWN_HEAVY, /* 0x2522 */ UNICODE_BOX_DRAWINGS_HEAVY_VERTICAL_AND_RIGHT, /* 0x2523 */ UNICODE_BOX_DRAWINGS_LIGHT_DOWN_AND_HORIZONTAL, /* 0x252c */ UNICODE_BOX_DRAWINGS_LEFT_HEAVY_AND_RIGHT_DOWN_LIGHT, /* 0x252d */ UNICODE_BOX_DRAWINGS_RIGHT_HEAVY_AND_LEFT_DOWN_LIGHT, /* 0x252e */ UNICODE_BOX_DRAWINGS_DOWN_LIGHT_AND_HORIZONTAL_HEAVY, /* 0x252f */ UNICODE_BOX_DRAWINGS_DOWN_HEAVY_AND_HORIZONTAL_LIGHT, /* 0x2530 */ UNICODE_BOX_DRAWINGS_RIGHT_LIGHT_AND_LEFT_DOWN_HEAVY, /* 0x2531 */ UNICODE_BOX_DRAWINGS_LEFT_LIGHT_AND_RIGHT_DOWN_HEAVY, /* 0x2532 */ UNICODE_BOX_DRAWINGS_HEAVY_DOWN_AND_HORIZONTAL, /* 0x2533 */ UNICODE_BOX_DRAWINGS_LIGHT_UP_AND_HORIZONTAL, /* 0x2534 */ UNICODE_BOX_DRAWINGS_LEFT_HEAVY_AND_RIGHT_UP_LIGHT, /* 0x2535 */ UNICODE_BOX_DRAWINGS_RIGHT_HEAVY_AND_LEFT_UP_LIGHT, /* 0x2536 */ UNICODE_BOX_DRAWINGS_UP_LIGHT_AND_HORIZONTAL_HEAVY, /* 0x2537 */ UNICODE_BOX_DRAWINGS_UP_HEAVY_AND_HORIZONTAL_LIGHT, /* 0x2538 */ UNICODE_BOX_DRAWINGS_RIGHT_LIGHT_AND_LEFT_UP_HEAVY, /* 0x2539 */ UNICODE_BOX_DRAWINGS_LEFT_LIGHT_AND_RIGHT_UP_HEAVY, /* 0x253a */ UNICODE_BOX_DRAWINGS_HEAVY_UP_AND_HORIZONTAL, /* 0x253b */ UNICODE_BOX_DRAWINGS_LIGHT_VERTICAL_AND_HORIZONTAL, /* 0x253c */ UNICODE_BOX_DRAWINGS_LEFT_HEAVY_AND_RIGHT_VERTICAL_LIGHT, /* 0x253d */ UNICODE_BOX_DRAWINGS_RIGHT_HEAVY_AND_LEFT_VERTICAL_LIGHT, /* 0x253e */ UNICODE_BOX_DRAWINGS_VERTICAL_LIGHT_AND_HORIZONTAL_HEAVY, /* 0x253f */ UNICODE_BOX_DRAWINGS_UP_HEAVY_AND_DOWN_HORIZONTAL_LIGHT, /* 0x2540 */ UNICODE_BOX_DRAWINGS_DOWN_HEAVY_AND_UP_HORIZONTAL_LIGHT, /* 0x2541 */ UNICODE_BOX_DRAWINGS_VERTICAL_HEAVY_AND_HORIZONTAL_LIGHT, /* 0x2542 */ UNICODE_BOX_DRAWINGS_LEFT_UP_HEAVY_AND_RIGHT_DOWN_LIGHT, /* 0x2543 */ UNICODE_BOX_DRAWINGS_RIGHT_UP_HEAVY_AND_LEFT_DOWN_LIGHT, /* 0x2544 */ UNICODE_BOX_DRAWINGS_LEFT_DOWN_HEAVY_AND_RIGHT_UP_LIGHT, /* 0x2545 */ UNICODE_BOX_DRAWINGS_RIGHT_DOWN_HEAVY_AND_LEFT_UP_LIGHT, /* 0x2546 */ UNICODE_BOX_DRAWINGS_DOWN_LIGHT_AND_UP_HORIZONTAL_HEAVY, /* 0x2547 */ UNICODE_BOX_DRAWINGS_UP_LIGHT_AND_DOWN_HORIZONTAL_HEAVY, /* 0x2548 */ UNICODE_BOX_DRAWINGS_RIGHT_LIGHT_AND_LEFT_VERTICAL_HEAVY, /* 0x2549 */ UNICODE_BOX_DRAWINGS_LEFT_LIGHT_AND_RIGHT_VERTICAL_HEAVY, /* 0x254a */ UNICODE_BOX_DRAWINGS_HEAVY_VERTICAL_AND_HORIZONTAL, /* 0x254b */ UNICODE_BOX_DRAWINGS_DOUBLE_HORIZONTAL, /* 0x2550 */ UNICODE_BOX_DRAWINGS_DOWN_SINGLE_AND_RIGHT_DOUBLE, /* 0x2552 */ UNICODE_BOX_DRAWINGS_DOWN_DOUBLE_AND_RIGHT_SINGLE, /* 0x2553 */ UNICODE_BOX_DRAWINGS_DOUBLE_DOWN_AND_RIGHT, /* 0x2554 */ UNICODE_BOX_DRAWINGS_UP_SINGLE_AND_RIGHT_DOUBLE, /* 0x2558 */ UNICODE_BOX_DRAWINGS_UP_DOUBLE_AND_RIGHT_SINGLE, /* 0x2559 */ UNICODE_BOX_DRAWINGS_DOUBLE_UP_AND_RIGHT, /* 0x255a */ UNICODE_BOX_DRAWINGS_VERTICAL_SINGLE_AND_RIGHT_DOUBLE, /* 0x255e */ UNICODE_BOX_DRAWINGS_VERTICAL_DOUBLE_AND_RIGHT_SINGLE, /* 0x255f */ UNICODE_BOX_DRAWINGS_DOUBLE_VERTICAL_AND_RIGHT, /* 0x2560 */ UNICODE_BOX_DRAWINGS_DOWN_SINGLE_AND_HORIZONTAL_DOUBLE, /* 0x2564 */ UNICODE_BOX_DRAWINGS_DOWN_DOUBLE_AND_HORIZONTAL_SINGLE, /* 0x2565 */ UNICODE_BOX_DRAWINGS_DOUBLE_DOWN_AND_HORIZONTAL, /* 0x2566 */ UNICODE_BOX_DRAWINGS_UP_SINGLE_AND_HORIZONTAL_DOUBLE, /* 0x2567 */ UNICODE_BOX_DRAWINGS_UP_DOUBLE_AND_HORIZONTAL_SINGLE, /* 0x2568 */ UNICODE_BOX_DRAWINGS_DOUBLE_UP_AND_HORIZONTAL, /* 0x2569 */ UNICODE_BOX_DRAWINGS_VERTICAL_SINGLE_AND_HORIZONTAL_DOUBLE, /* 0x256a */ UNICODE_BOX_DRAWINGS_VERTICAL_DOUBLE_AND_HORIZONTAL_SINGLE, /* 0x256b */ UNICODE_BOX_DRAWINGS_DOUBLE_VERTICAL_AND_HORIZONTAL, /* 0x256c */ UNICODE_BOX_DRAWINGS_LIGHT_ARC_DOWN_AND_RIGHT, /* 0x256d */ UNICODE_BOX_DRAWINGS_LIGHT_ARC_UP_AND_RIGHT, /* 0x2570 */ #if 0 /* The diagonal lines don't look much better with or without the ninth column. */ /* 0x2571 */ UNICODE_BOX_DRAWINGS_LIGHT_DIAGONAL_UPPER_RIGHT_TO_LOWER_LEFT, /* 0x2572 */ UNICODE_BOX_DRAWINGS_LIGHT_DIAGONAL_UPPER_LEFT_TO_LOWER_RIGHT, UNICODE_BOX_DRAWINGS_LIGHT_DIAGONAL_CROSS, /* 0x2573 */ #endif UNICODE_BOX_DRAWINGS_LIGHT_RIGHT, /* 0x2576 */ UNICODE_BOX_DRAWINGS_HEAVY_RIGHT, /* 0x257a */ UNICODE_BOX_DRAWINGS_LIGHT_LEFT_AND_HEAVY_RIGHT, /* 0x257c */ UNICODE_BOX_DRAWINGS_HEAVY_LEFT_AND_LIGHT_RIGHT, /* 0x257e */ UNICODE_UPPER_HALF_BLOCK, /* 0x2580 */ UNICODE_LOWER_ONE_EIGHTH_BLOCK, /* 0x2581 */ UNICODE_LOWER_ONE_QUARTER_BLOCK, /* 0x2582 */ UNICODE_LOWER_THREE_EIGHTHS_BLOCK, /* 0x2583 */ UNICODE_LOWER_HALF_BLOCK, /* 0x2584 */ UNICODE_LOWER_FIVE_EIGHTHS_BLOCK, /* 0x2585 */ UNICODE_LOWER_THREE_QUARTERS_BLOCK, /* 0x2586 */ UNICODE_LOWER_SEVEN_EIGHTHS_BLOCK, /* 0x2587 */ UNICODE_FULL_BLOCK, /* 0x2588 */ UNICODE_RIGHT_HALF_BLOCK, /* 0x2590 */ #if 0 /* The shades don't look much better with or without the ninth column. */ UNICODE_LIGHT_SHADE, /* 0x2591 */ UNICODE_MEDIUM_SHADE, /* 0x2592 */ UNICODE_DARK_SHADE, /* 0x2593 */ #endif UNICODE_BLACK_SQUARE, /* 0x25a0 */ UNICODE_UPPER_ONE_EIGHTH_BLOCK, /* 0x2594 */ UNICODE_RIGHT_ONE_EIGHTH_BLOCK, /* 0x2595 */ UNICODE_QUADRANT_LOWER_RIGHT, /* 0x2597 */ UNICODE_QUADRANT_UPPER_LEFT_AND_LOWER_LEFT_AND_LOWER_RIGHT, /* 0x2599 */ UNICODE_QUADRANT_UPPER_LEFT_AND_LOWER_RIGHT, /* 0x259a */ UNICODE_QUADRANT_UPPER_LEFT_AND_UPPER_RIGHT_AND_LOWER_LEFT, /* 0x259b */ UNICODE_QUADRANT_UPPER_LEFT_AND_UPPER_RIGHT_AND_LOWER_RIGHT, /* 0x259c */ UNICODE_QUADRANT_UPPER_RIGHT, /* 0x259d */ UNICODE_QUADRANT_UPPER_RIGHT_AND_LOWER_LEFT, /* 0x259e */ UNICODE_QUADRANT_UPPER_RIGHT_AND_LOWER_LEFT_AND_LOWER_RIGHT, /* 0x259f */ }; int cmp_wchar (const void *a, const void *b) { const wchar_t *wa = (const wchar_t *) a; const wchar_t *wb = (const wchar_t *) b; return (*wa > *wb) - (*wa < *wb); } #if QUAERENDO_INVENIETIS /* XXX The (maximum) size is hard coded. */ if (chr >= GNU_HEAD_BEGIN && chr <= GNU_HEAD_BEGIN + 50) return 1; #endif return bsearch (&chr, horiz_glyphs, sizeof (horiz_glyphs) / sizeof (horiz_glyphs[0]), sizeof (horiz_glyphs[0]), cmp_wchar) ? 1 : 0; } /* Try to look up glyph CHR in font FONT of dynafont DF with attribute ATTR. This is a helper function for dynafont_lookup. Returns 1 on success, 0 otherwise. */ static int dynafont_lookup_internal (dynafont_t df, bdf_font_t font, wchar_t wide_chr, wchar_t attr, int *rpos) { /* When hashing the character, we mix in the font attribute. */ struct mapped_character *chr = hurd_ihash_find (&df->charmap, (int) (wide_chr | attr)); int lgc; struct bdf_glyph *glyph; int pos; int found = 0; lgc = df->use_lgc ? is_lgc (wide_chr) : 0; if (chr) { if (!chr->refs++) { if (lgc) df->vga_font_free_indices_lgc--; else df->vga_font_free_indices--; } /* Return the index of CHR. */ *rpos = chr - df->charmap_data; return 1; } /* The character is not currently mapped. Look for an empty slot and add it. */ if ((lgc && !df->vga_font_free_indices_lgc) || (!lgc && !df->vga_font_free_indices)) return 0; glyph = bdf_find_glyph (font, (int) (wide_chr & ~CONS_WCHAR_CONTINUED), 0); if (!glyph) glyph = bdf_find_glyph (font, -1, (int) (wide_chr & ~CONS_WCHAR_CONTINUED)); if (!glyph) return 0; if (lgc) { int start_pos = df->vga_font_last_free_index_lgc + 1; if ((start_pos % VGA_FONT_SIZE) == VGA_FONT_LGC_BEGIN + VGA_FONT_LGC_COUNT) { start_pos += VGA_FONT_SIZE - VGA_FONT_LGC_COUNT; start_pos %= df->size; } pos = start_pos; do { if (df->charmap_data[pos].refs == 0) { found = 1; break; } pos++; if ((pos % VGA_FONT_SIZE) == VGA_FONT_LGC_BEGIN + VGA_FONT_LGC_COUNT) { pos += VGA_FONT_SIZE - VGA_FONT_LGC_COUNT; pos %= df->size; } } while (pos != start_pos); assert (found); df->vga_font_free_indices_lgc--; df->vga_font_last_free_index_lgc = pos; } else { int start_pos = (df->vga_font_last_free_index + 1) % df->size; if (df->use_lgc && (start_pos % VGA_FONT_SIZE) == VGA_FONT_LGC_BEGIN) start_pos += VGA_FONT_LGC_COUNT; pos = start_pos; do { if (df->charmap_data[pos].refs == 0) { found = 1; break; } pos = (pos + 1) % df->size; if (df->use_lgc && (pos % VGA_FONT_SIZE) == VGA_FONT_LGC_BEGIN) pos += VGA_FONT_LGC_COUNT; } while (pos != start_pos); assert (found); df->vga_font_free_indices--; df->vga_font_last_free_index = pos; } /* Ok, we found a new entry, use it. */ chr = &df->charmap_data[pos]; chr->refs = 1; chr->character = (wide_chr | attr); /* Copy the glyph bitmap, taking into account double-width characters. */ { int height = (glyph->bbox.height > 32) ? 32 : glyph->bbox.height; int bwidth = (glyph->bbox.width + 7) / 8; int ofs = (bwidth >= 2) && (wide_chr & CONS_WCHAR_CONTINUED); for (int i = 0; i < height; i++) df->vga_font[pos][i] = glyph->bitmap[i * bwidth + ofs]; if (height < 32) memset (&df->vga_font[pos][height], 0, 32 - height); } if (active_dynafont == df) vga_write_font_buffer (0, pos, df->vga_font[pos], VGA_FONT_HEIGHT); /* Update the hash table. */ if (chr->locp) hurd_ihash_locp_remove (&df->charmap, chr->locp); hurd_ihash_add (&df->charmap, (int) (wide_chr | attr), chr); *rpos = pos; return 1; } /* Look up the vga font index for an UCS-4 character. If not already mapped, try to find space for a new entry and add the mapping. Acquires an additional reference to the character. Might return the glyph for the unrepresentable character if the glyph is ot available for this character or no free slot is available right now. In the former case, some information gets lost (to do otherwise, one would have to either assign one of the scarce font indices to each undisplayable character value on screen, or to store the whole scrollback buffer as wide chars as well to recover the lost info from that copy of the original text. */ int dynafont_lookup (dynafont_t df, conchar_t *conchr) { wchar_t attr = (conchr->attr.italic ? WCHAR_ITALIC : 0) | (conchr->attr.bold ? WCHAR_BOLD : 0); int found = 0; int pos = FONT_INDEX_UNKNOWN; if (attr == (WCHAR_BOLD | WCHAR_ITALIC) && df->font_bold_italic) found = dynafont_lookup_internal (df, df->font_bold_italic, conchr->chr, WCHAR_BOLD | WCHAR_ITALIC, &pos); /* This order will prefer bold over italic if both are requested but are not available at the same time. The other order is just as good. XXX. */ if (!found && (attr & WCHAR_BOLD) && df->font_bold) found = dynafont_lookup_internal (df, df->font_bold, conchr->chr, WCHAR_BOLD, &pos); if (!found && (attr & WCHAR_ITALIC) && df->font_italic) found = dynafont_lookup_internal (df, df->font_italic, conchr->chr, WCHAR_ITALIC, &pos); if (!found) found = dynafont_lookup_internal (df, df->font, conchr->chr, 0, &pos); if (!found) { df->charmap_data[FONT_INDEX_UNKNOWN].refs++; pos = FONT_INDEX_UNKNOWN; } return pos; } /* Release a reference to the glyph VGA_FONT_INDEX in dynafont DF. */ void dynafont_release (dynafont_t df, int vga_font_index) { if (! --df->charmap_data[vga_font_index].refs) { if (df->use_lgc && is_lgc (df->charmap_data[vga_font_index].character & WCHAR_MASK)) df->vga_font_free_indices_lgc++; else df->vga_font_free_indices++; } } /* Set the cursor to normal if STANDOUT is zero, or to a block cursor otherwise. */ void dynafont_set_cursor (dynafont_t df, int standout) { int height = (df->font->bbox.height > 32) ? 32 : df->font->bbox.height; df->cursor_standout = standout; if (df == active_dynafont) { if (standout) vga_set_cursor_size (1, height - 1); else vga_set_cursor_size ((height >= 2) ? height - 2 : 0, height - 1); } } /* Load the VGA font to the card and make it active. */ void dynafont_activate (dynafont_t df) { int height = (df->font->bbox.height > 32) ? 32 : df->font->bbox.height; vga_write_font_buffer (0, 0, (char *) df->vga_font, df->size * VGA_FONT_HEIGHT); vga_select_font_buffer (0, (df->size == 512) ? 1 : 0); /* XXX Changing the font height below 13 or above 16 will cause display problems for the user if we don't also program the video mode timings. The standard font height for 80x25 is 16. */ vga_set_font_height (height); vga_set_font_width (df->width); active_dynafont = df; dynafont_set_cursor (df, df->cursor_standout); } #if 0 /* XXX This code is deactivated because it needs to be changed to allow the italic and bold code, too. */ /* Change the font used by dynafont DF to FONT. This transformation is initially loss-less, if the new font can't display some characters on the screen, you can always go back to a font that does and get the glyphs for those characters back. (However, the comments in dynafont_lookup hold for glyphs looked up after the font change.) */ void dynafont_change_font (dynafont_t df, bdf_font_t font) { int i; df->font = font; for (i = 0; i < df->size; i++) { /* If we don't derive the unknown or space glyph from the font, we don't update it. */ #ifndef ENCODING_UNKNOWN if (i == FONT_INDEX_UNKNOWN) continue; #endif if (! df->charmap_data[i].refs) { /* The glyph is not used. If it is mapped, we need to remove the mapping to invalidate the glyph. */ if (df->charmap_data[i].locp) { hurd_ihash_locp_remove (&df->charmap, df->charmap_data[i].locp); df->charmap_data[i].locp = NULL; } } else { /* The glyph is mapped and in use. We will not destroy the mapping, but just override the glyph in the VGA font. This way the user can recover from loading a bad font by going back to a better one. */ struct bdf_glyph *glyph; glyph = bdf_find_glyph (df->font, (int) df->charmap_data[i].character, 0); if (!glyph) glyph = bdf_find_glyph (df->font, -1, (int) df->charmap_data[i].character); if (!glyph) { #ifdef ENCODING_UNKNOWN /* The new font doesn't have a representation for the unknown glyph at the desired place, so keep the old one. XXX Should load the built-in one here. */ if (i == FONT_INDEX_UNKNOWN) continue; #endif memcpy (df->vga_font[i], df->vga_font[FONT_INDEX_UNKNOWN], 32); } else { /* XXX Take font size and glyph size into account. */ for (int j = 0; j < ((glyph->bbox.height > 32) ? 32 : glyph->bbox.height); j++) df->vga_font[i][j] = glyph->bitmap[j * ((glyph->bbox.width + 7) / 8)]; if (glyph->bbox.height < 32) memset (((char *) df->vga_font[i]) + glyph->bbox.height, 0, 32 - glyph->bbox.height); } } } if (active_dynafont == df) /* Refresh the card info. */ dynafont_activate (df); } #endif