Device: partial implementation of line scrolling logic.

Signed-off-by: Ramūnas Mažeikis <ramunasnezinomas@gmail.com>

1 files changed, 22 insertions, 0 deletions

diff --git a/src/device/screen.h b/src/device/screen.h
new file mode 100755
index 0000000..ec30cd5
--- /dev/null
+++ b/src/device/screen.h
@@ -0,0 +1,22 @@
+#ifndef DEVICE_SCREEN_H
+#define DEVICE_SCREEN_H
+
+#include <time.h>
+
+/**
+ * Struct that keeps track of the lines on the screen.
+ */
+struct display_status {
+	time_t delta;			/* Seconds/Line */
+	time_t last_scroll_time;	/* Last second the line was scrolled */
+	char *message;			/* Entire message to be shown */
+	char *first_line;		/* First line on display */
+	char *second_line;		/* Second line on display */
+	size_t message_len;		/* Length of the message */
+	size_t line_cursor;		/* Index of the first line being displayed. */
+};
+
+void display_update_scroll(struct display_status *status);
+void display_status_init(struct display_status *status, char *msg);
+
+#endif /* DEVICE_SCREEN_H */
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