| 1 | /*
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| 2 | * SPDX-FileCopyrightText: 2011 Martin Decky
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| 3 | *
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| 4 | * SPDX-License-Identifier: BSD-3-Clause
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| 5 | */
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| 6 |
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| 7 | /** @addtogroup libc
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| 8 | * @{
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| 9 | */
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| 10 | /**
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| 11 | * @file
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| 12 | */
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| 13 |
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| 14 | #ifndef _LIBC_IO_CHARGRID_H_
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| 15 | #define _LIBC_IO_CHARGRID_H_
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| 16 |
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| 17 | #include <io/charfield.h>
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| 18 | #include <types/common.h>
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| 19 | #include <stddef.h>
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| 20 |
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| 21 | typedef enum {
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| 22 | CHARGRID_FLAG_NONE = 0,
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| 23 | CHARGRID_FLAG_SHARED = 1
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| 24 | } chargrid_flag_t;
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| 25 |
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| 26 | typedef struct {
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| 27 | size_t size; /**< Structure size */
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| 28 | chargrid_flag_t flags; /**< Screenbuffer flags */
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| 29 |
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| 30 | sysarg_t cols; /**< Number of columns */
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| 31 | sysarg_t rows; /**< Number of rows */
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| 32 |
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| 33 | sysarg_t col; /**< Current column */
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| 34 | sysarg_t row; /**< Current row */
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| 35 | bool cursor_visible; /**< Cursor visibility */
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| 36 |
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| 37 | char_attrs_t attrs; /**< Current attributes */
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| 38 |
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| 39 | sysarg_t top_row; /**< The first row in the cyclic buffer */
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| 40 | charfield_t data[]; /**< Screen contents (cyclic buffer) */
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| 41 | } chargrid_t;
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| 42 |
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| 43 | static inline charfield_t *chargrid_charfield_at(chargrid_t *chargrid,
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| 44 | sysarg_t col, sysarg_t row)
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| 45 | {
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| 46 | return chargrid->data +
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| 47 | ((row + chargrid->top_row) % chargrid->rows) * chargrid->cols +
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| 48 | col;
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| 49 | }
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| 50 |
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| 51 | extern chargrid_t *chargrid_create(sysarg_t, sysarg_t,
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| 52 | chargrid_flag_t);
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| 53 | extern void chargrid_destroy(chargrid_t *);
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| 54 |
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| 55 | extern bool chargrid_cursor_at(chargrid_t *, sysarg_t, sysarg_t);
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| 56 |
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| 57 | extern sysarg_t chargrid_get_top_row(chargrid_t *);
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| 58 |
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| 59 | extern sysarg_t chargrid_putuchar(chargrid_t *, char32_t, bool);
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| 60 | extern sysarg_t chargrid_newline(chargrid_t *);
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| 61 | extern sysarg_t chargrid_tabstop(chargrid_t *, sysarg_t);
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| 62 | extern sysarg_t chargrid_backspace(chargrid_t *);
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| 63 |
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| 64 | extern void chargrid_clear(chargrid_t *);
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| 65 | extern void chargrid_clear_row(chargrid_t *, sysarg_t);
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| 66 |
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| 67 | extern void chargrid_set_cursor(chargrid_t *, sysarg_t, sysarg_t);
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| 68 | extern void chargrid_set_cursor_visibility(chargrid_t *, bool);
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| 69 | extern bool chargrid_get_cursor_visibility(chargrid_t *);
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| 70 |
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| 71 | extern void chargrid_get_cursor(chargrid_t *, sysarg_t *, sysarg_t *);
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| 72 |
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| 73 | extern void chargrid_set_style(chargrid_t *, console_style_t);
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| 74 | extern void chargrid_set_color(chargrid_t *, console_color_t,
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| 75 | console_color_t, console_color_attr_t);
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| 76 | extern void chargrid_set_rgb_color(chargrid_t *, pixel_t, pixel_t);
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| 77 |
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| 78 | #endif
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| 79 |
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| 80 | /** @}
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| 81 | */
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