diff options
| -rw-r--r-- | src/drivers/ao_console.c | 151 | ||||
| -rw-r--r-- | src/drivers/ao_console.h | 24 |
2 files changed, 175 insertions, 0 deletions
diff --git a/src/drivers/ao_console.c b/src/drivers/ao_console.c new file mode 100644 index 00000000..cbde38c9 --- /dev/null +++ b/src/drivers/ao_console.c @@ -0,0 +1,151 @@ +/* + * Copyright © 2016 Keith Packard <keithp@keithp.com> + * + * This program 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 of the License, or + * (at your option) any later version. + * + * This program 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. + */ + +#include "ao.h" +#include "ao_console.h" +#include "ao_ps2.h" +#include "ao_vga.h" + +static uint8_t console_row, console_col; + +#define ao_console_bitmap ao_vga_bitmap + +static uint8_t console_rows, console_cols; + +static void +ao_console_scroll(void) +{ + ao_copy(&ao_console_bitmap, + 0, 0, + ao_console_bitmap.width, + ao_console_bitmap.height - ao_font.height, + &ao_console_bitmap, + 0, ao_font.height, + AO_COPY); + ao_rect(&ao_console_bitmap, + 0, + (console_rows - 1) * ao_font.height, + ao_console_bitmap.width, + ao_font.height, + 1, + AO_COPY); +} + +static void +ao_console_cursor(void) +{ + ao_rect(&ao_console_bitmap, + console_col * ao_font.width, + console_row * ao_font.height, + ao_font.width, + ao_font.height, + 1, + AO_XOR); +} + +static void +ao_console_clear(void) +{ + ao_rect(&ao_console_bitmap, + 0, 0, + ao_console_bitmap.width, + ao_console_bitmap.height, + 1, + AO_COPY); +} + +static void +ao_console_space(void) +{ + ao_rect(&ao_console_bitmap, + console_col * ao_font.width, + console_row * ao_font.height, + ao_font.width, + ao_font.height, + 1, + AO_COPY); +} + +static void +ao_console_newline(void) +{ + if (++console_row == console_rows) { + ao_console_scroll(); + console_row--; + } +} + +void +ao_console_putchar(char c) +{ + if (' ' <= c && c < 0x7f) { + char text[2]; + ao_console_space(); + text[0] = c; + text[1] = '\0'; + ao_text(&ao_console_bitmap, + console_col * ao_font.width, + console_row * ao_font.height + ao_font.ascent, + text, + 0, + AO_COPY); + if (++console_col == console_cols) { + console_col = 0; + ao_console_newline(); + } + } else { + ao_console_cursor(); + switch (c) { + case '\r': + console_col = 0; + break; + case '\t': + console_col += 8 - (console_col & 7); + if (console_col >= console_cols) { + console_col = 0; + ao_console_newline(); + } + break; + case '\n': + ao_console_newline(); + break; + case '\f': + console_col = console_row = 0; + ao_console_clear(); + break; + case '\177': + case '\010': + if (console_col) + console_col--; + break; + } + } + ao_console_cursor(); +} + +void +ao_console_init(void) +{ + console_cols = ao_console_bitmap.width / ao_font.width; + console_rows = ao_console_bitmap.height / ao_font.height; +#if CONSOLE_STDIN + ao_ps2_stdin = 1; + ao_add_stdio(_ao_ps2_pollchar, + ao_console_putchar, + NULL); +#endif + ao_console_clear(); + ao_console_cursor(); + ao_vga_enable(1); +} diff --git a/src/drivers/ao_console.h b/src/drivers/ao_console.h new file mode 100644 index 00000000..33d3658a --- /dev/null +++ b/src/drivers/ao_console.h @@ -0,0 +1,24 @@ +/* + * Copyright © 2016 Keith Packard <keithp@keithp.com> + * + * This program 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 of the License, or + * (at your option) any later version. + * + * This program 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. + */ + +#ifndef _AO_CONSOLE_H_ +#define _AO_CONSOLE_H_ + +void +ao_console_putchar(char c); + +void +ao_console_init(void); + +#endif /* _AO_CONSOLE_H_ */ |