summaryrefslogtreecommitdiffstats
path: root/src/screen.c
blob: 7259fab3543595f011a85b602779a81ed607c445 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
/*
 * Terminal screen functions
 *
 * Copyright (C) 2019  Patrick McDermott
 *
 * This file is part of Timeteller.
 *
 * Timeteller 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 3 of the License, or
 * (at your option) any later version.
 *
 * Timeteller 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 Timeteller.  If not, see <http://www.gnu.org/licenses/>.
 */

#include "screen.h"

#include <assert.h>
#include <curses.h>
#include <stdbool.h>
#include <stdlib.h>
#include <unistd.h>

#include "clock.h"
#include "speech.h"

struct screen {
	WINDOW       *win;
	struct clock *clock;
};

struct screen *
screen_new(void)
{
	struct screen *screen;

	screen = calloc(1, sizeof(*screen));
	if (screen == NULL) {
		return NULL;
	}

	screen->win = initscr();  /* On failure, does not return.  */
	if (noecho() == ERR || raw() == ERR || nodelay(screen->win, TRUE)) {
		free(screen);
		return NULL;
	}
	curs_set(0);  /* Ignore errors.  */

	if (has_colors() && start_color() != ERR) {
		init_pair(1, COLOR_RED, COLOR_BLACK);
		wcolor_set(screen->win, 1, NULL);
	}

	screen->clock = clock_new(screen->win);
	if (screen->clock == NULL) {
		free(screen);
		return NULL;
	}

	return screen;
}

bool
screen_main(struct screen *screen, struct speech *speech)
{
	bool play;

	assert(screen);
	assert(speech);

	for (;;) {
		switch (wgetch(screen->win)) {
			case ERR:
				break;
			case 'q':
				return true;
			case 0x1B:  /* ASCII ESC */
				if (wgetch(screen->win) == ERR) {  /* Esc key */
					return true;
				}
				/* Probably a CSI sequence */
				while (wgetch(screen->win) != ERR);
				play = true;
				break;
#ifdef KEY_RESIZE
			case KEY_RESIZE:
				clock_clear(screen->clock);
				clock_size(screen->clock);
				break;
#endif
			default:
				/* Just to be safe: */
				while (wgetch(screen->win) != ERR);
				play = true;
		}

		clock_draw(screen->clock);
		refresh();

		if (play) {
			speech_play_time(speech);
			play = false;
		} else {
			sleep(1);
		}
	}

	return true;
}

struct screen *
screen_destroy(struct screen **screen_p)
{
	struct screen *screen;

	assert(screen_p && *screen_p);

	screen = *screen_p;

	delwin(screen->win);
	endwin();

	clock_destroy(&screen->clock);

	free(screen);
	return screen = NULL;
}