55 lines
1.4 KiB
C
55 lines
1.4 KiB
C
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#include <stdio.h>
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#include <time.h>
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#include <hexagram/clock.h>
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static ssize_t format_text(hexagram_text *text, char *buf, size_t len) {
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hexagram_clock *clock = (hexagram_clock *)text;
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switch (clock->format) {
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case HEXAGRAM_CLOCK_24H:
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return snprintf(buf, len, "%d:%02d",
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clock->time.hour, clock->time.minute);
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case HEXAGRAM_CLOCK_12H:
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return snprintf(buf, len, "%d:%02d %s",
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clock->time.hour, clock->time.minute,
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clock->time.hour < 12? "am": "pm");
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}
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return 0;
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}
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int hexagram_clock_init(hexagram_clock *clock,
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double x,
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double y,
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hexagram_text_align align,
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hexagram_clock_format format) {
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if (hexagram_text_init(&clock->text,
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x,
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y,
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align,
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format_text) < 0) {
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goto error_text_init;
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}
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clock->format = format;
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clock->time.hour = 0;
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clock->time.minute = 0;
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return 0;
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error_text_init:
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return -1;
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}
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void hexagram_clock_set(hexagram_clock *clock, time_t now) {
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struct tm *now_tm;
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if ((now_tm = localtime(&now)) == NULL) {
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return;
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}
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clock->time.hour = now_tm->tm_hour;
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clock->time.minute = now_tm->tm_min;
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}
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