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Scrolling text now in function and with a 'slide in' from right

This commit is contained in:
Florian Streibelt 2011-10-13 22:22:04 +02:00
parent 8261c3ecef
commit ad5eff49be
1 changed files with 39 additions and 17 deletions
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56
display-daemon/ser.c
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@ -22,7 +22,10 @@
int fd;
int screensaver;
int brightness = 4;
int offset = 0;
char *fifo;
char *pausemsg = NULL;
pthread_mutex_t mutex1 = PTHREAD_MUTEX_INITIALIZER;
pthread_t thread1;
@ -105,17 +108,17 @@ char display_set_timer[] = { 0x1F, 0x54 };
#define TIME_BASE 200000
#define TB_TO_SECS(x) (x*1000000/TIME_BASE)
#define TIME_CLOCK TB_TO_SECS(25)
#define TIME_CLOCK TB_TO_SECS(5)
#define TIME_DIM TB_TO_SECS(90)
#define TIME_OFF TB_TO_SECS(320)
#define DEVICE "/dev/ttyUSB0"
#define PAUSEMSG "Hallo, bitte melde Dich am Barcodereader an, um das Kassensystem zu benutzen *** "
// chars per line in our display:
#define LINELEN 20
void
display_write (const void *buf, size_t count)
{
@ -252,6 +255,36 @@ sighandler (int sig)
//signal(sig, sighandler);
}
void scrolltext(){
if (pausemsg){
char *message = calloc (LINELEN + 1, sizeof (char));
int spaces=0;
if (offset<LINELEN){
spaces = LINELEN-offset; //anzahl spaces im ersten durchgang
memset(message , ' ', spaces);
}
strncpy (message+spaces, pausemsg + offset - LINELEN, LINELEN-spaces);
offset=(offset + 1) % (strlen(pausemsg)+LINELEN);
if (offset==0){
offset=LINELEN;
}
int l = strlen (message);
if (l < LINELEN)
{
message = strncat (message, pausemsg, LINELEN - l);
}
SEND_TEXT ("\x0b");
SEND_TEXT (message);
free (message);
}
}
int
main (int argc, char **argv)
@ -260,8 +293,9 @@ main (int argc, char **argv)
//TODO: arg parser!
fifo = strdup ("/tmp/display");
pausemsg = strdup("Bitte scanne Deine ID-Karte um Dich anzumelden *** ");
if (argc != 2)
if (argc != 2)
{
devnode = strdup (DEVICE);
printf ("no device specified, using default %s\n", devnode);
@ -307,6 +341,7 @@ main (int argc, char **argv)
sleep (3);
screensaver = 0;
offset = 0; // offset for scrolltext in screensaver
while (1)
{
@ -325,7 +360,6 @@ main (int argc, char **argv)
if (screensaver < (TIME_CLOCK + TIME_OFF + TIME_DIM + 10)){
screensaver++;
}
//screensaver = (screensaver + 1) % (TIME_CLOCK + TIME_OFF + TIME_DIM + 10);
if (screensaver == TIME_CLOCK)
{
@ -340,19 +374,7 @@ main (int argc, char **argv)
//show a scroll text while the screensaver is active...
if ((screensaver > (TIME_CLOCK + 10)) && (screensaver < TIME_OFF))
{
char *message = calloc (LINELEN + 1, sizeof (char));
strncpy (message,
PAUSEMSG +
((screensaver - TIME_CLOCK - 1) % strlen (PAUSEMSG)),
LINELEN);
int l = strlen (message);
if (l < LINELEN)
{
message = strncat (message, PAUSEMSG, LINELEN - l);
}
SEND_TEXT ("\x0b");
SEND_TEXT (message);
free (message);
scrolltext();
}
//after some more seconds of inactivity dim display and finally turn off