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Dynamically size terminal using SIGWINCH

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Jon Williams 2013-06-19 00:16:13 -04:00
parent acecc6d79b
commit f18180fef4
1 changed files with 28 additions and 1 deletions
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29
dump1090.c
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@ -41,9 +41,11 @@
#include <fcntl.h>
#include <ctype.h>
#include <sys/stat.h>
#include <sys/ioctl.h>
#include "rtl-sdr.h"
#include "anet.h"
#define MODES_DEFAULT_RATE 2000000
#define MODES_DEFAULT_FREQ 1090000000
#define MODES_DEFAULT_WIDTH 1000
@ -241,6 +243,8 @@ void useModesMessage(struct modesMessage *mm);
int fixSingleBitErrors(unsigned char *msg, int bits);
int fixTwoBitsErrors(unsigned char *msg, int bits);
int modesMessageLenByType(int type);
void sigWinchCallback();
int getTermRows();
/* ============================= Utility functions ========================== */
@ -277,6 +281,8 @@ void modesInitConfig(void) {
Modes.interactive_rows = MODES_INTERACTIVE_ROWS;
Modes.interactive_ttl = MODES_INTERACTIVE_TTL;
Modes.aggressive = 0;
Modes.interactive_rows = getTermRows();
}
void modesInit(void) {
@ -2363,7 +2369,7 @@ void showHelp(void) {
"--freq <hz> Set frequency (default: 1090 Mhz).\n"
"--ifile <filename> Read data from file (use '-' for stdin).\n"
"--interactive Interactive mode refreshing data on screen.\n"
"--interactive-rows <num> Max number of rows in interactive mode (default: 15).\n"
"--interactive-rows <num> Max number of rows in interactive mode (default: 15 or size of terminal).\n"
"--interactive-ttl <sec> Remove from list if idle for <sec> (default: 60).\n"
"--raw Show only messages hex values.\n"
"--net Enable networking.\n"
@ -2499,6 +2505,11 @@ int main(int argc, char **argv) {
}
}
/* Setup for SIGWINCH for handling lines */
if(Modes.interactive == 1) {
signal(SIGWINCH, sigWinchCallback);
}
/* Initialization */
modesInit();
if (Modes.net_only) {
@ -2568,3 +2579,19 @@ int main(int argc, char **argv) {
rtlsdr_close(Modes.dev);
return 0;
}
/* Handle resizing terminal */
void sigWinchCallback() {
signal(SIGWINCH, SIG_IGN);
Modes.interactive_rows = getTermRows();
interactiveShowData();
signal(SIGWINCH, sigWinchCallback);
}
int getTermRows()
{
struct winsize w;
ioctl(STDOUT_FILENO, TIOCGWINSZ, &w);
return w.ws_row;
}