57 lines
2.9 KiB
C
57 lines
2.9 KiB
C
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
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│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
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╞══════════════════════════════════════════════════════════════════════════════╡
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│ Copyright 2020 Justine Alexandra Roberts Tunney │
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│ │
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│ This program is free software; you can redistribute it and/or modify │
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│ it under the terms of the GNU General Public License as published by │
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│ the Free Software Foundation; version 2 of the License. │
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│ │
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│ This program is distributed in the hope that it will be useful, but │
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│ WITHOUT ANY WARRANTY; without even the implied warranty of │
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│ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU │
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│ General Public License for more details. │
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│ │
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│ You should have received a copy of the GNU General Public License │
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│ along with this program; if not, write to the Free Software │
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│ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA │
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│ 02110-1301 USA │
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "libc/conv/itoa.h"
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#include "libc/macros.h"
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#include "libc/str/str.h"
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#include "tool/build/lib/buffer.h"
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#include "tool/build/lib/cga.h"
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/* blk blu grn cyn red mag yel wht */
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static const uint8_t kCgaToAnsi[16] = {30, 34, 32, 36, 31, 35, 33, 37,
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90, 94, 92, 96, 91, 95, 93, 97};
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size_t FormatCga(uint8_t bgfg, char buf[hasatleast 11]) {
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char *p = buf;
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*p++ = '\e';
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*p++ = '[';
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p += uint64toarray_radix10(kCgaToAnsi[(bgfg & 0xF0) >> 4] + 10, p);
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*p++ = ';';
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p += uint64toarray_radix10(kCgaToAnsi[bgfg & 0x0F], p);
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*p++ = 'm';
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*p = '\0';
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return p - buf;
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}
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void DrawCga(struct Panel *p, uint8_t v[25][80][2]) {
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char buf[11];
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unsigned y, x, n, a;
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n = MIN(25, p->bottom - p->top);
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for (y = 0; y < n; ++y) {
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a = -1;
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for (x = 0; x < 80; ++x) {
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if (v[y][x][1] != a) {
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AppendData(&p->lines[y], buf, FormatCga((a = v[y][x][1]), buf));
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}
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AppendWide(&p->lines[y], kCp437[v[y][x][0]]);
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}
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AppendStr(&p->lines[y], "\e[0m");
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}
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}
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