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	Handle terminal resizes. - irc - Unnamed repository; edit this file 'descriptio…
	git clone git://vernunftzentrum.de/irc.git
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	---
	commit c5b6ac6afa188bd107bdbfb96500182447368b05
	parent 646d0a762d1536fca7c19518d1e30a269b57cba5
	Author: Quentin Carbonneaux <[email protected]>
	Date: Sun, 11 Mar 2012 22:03:49 +0100

	Handle terminal resizes.

	The KEY_RESIZE feature of ncurses is not used since it is not possible
	to detect if a KEY_RESIZE was queued by selecting on stdin. Hence, tinit
	now installs a SIGWINCH handler which will set the winchg variable to 1.

	I rely on the fact that select will be interrupted by the signal which
	pops after a terminal resize to be able to redraw the screen
	instantaneously.

	tresize does all the job of resizing the three used curses windows.

	Diffstat:
	irc.c \| 34 +++++++++++++++++++++++--------

	1 file changed, 26 insertions(+), 8 deletions(-)
	---
	diff --git a/irc.c b/irc.c
	@@ -2,6 +2,7 @@
	*/
	#include <assert.h>
	#include <limits.h>
	+#include <signal.h>
	#include <stdio.h>
	#include <stdlib.h>
	#include <stdarg.h>
	@@ -28,7 +29,7 @@ enum { ChanLen = 64, LineLen = 512, MaxChans = 16, BufSz = 20…

	char nick[64];
	char prefix[64];
	-int quit;
	+int quit, winchg;
	int sfd; /* Server file descriptor. */
	struct {
	int x;
	@@ -315,9 +316,16 @@ uparse(char *m)
	}

	static void
	+sigwinch(int sig)
	+{
	+ if (sig) winchg=1;
	+}
	+
	+static void
	tinit(void)
	{
	setlocale(LC_ALL, "");
	+ signal(SIGWINCH, sigwinch);
	initscr();
	raw();
	noecho();
	@@ -337,6 +345,19 @@ tinit(void)
	}

	static void
	+tresize(void)
	+{
	+ winchg=0;
	+ getmaxyx(stdscr, scr.y, scr.x);
	+ if (scr.y<3 \|\| scr.x<10) panic("Screen too small.");
	+ wresize(scr.mw, scr.y-2, scr.x);
	+ wresize(scr.iw, 1, scr.x);
	+ wresize(scr.sw, 1, scr.x);
	+ mvwin(scr.iw, scr.y-1, 1);
	+ tredraw();
	+}
	+
	+static void
	tredraw(void)
	{
	struct Chan * const c=&chl[ch];
	@@ -425,11 +446,6 @@ tgetch(void)
	uparse(lb);
	dirty=cu=len=0;
	break;
	- case KEY_RESIZE:
	- getmaxyx(stdscr, scr.y, scr.x);
	- if (scr.y<3 \|\| scr.x<10) panic("Screen too small.");
	- tredraw();
	- return;
	default:
	if (c>CHAR_MAX \|\| len>=BufSz) return; /* Skip other curses cod…
	memmove(&lb[cu+1], &lb[cu], len-cu);
	@@ -476,7 +492,9 @@ main(void)
	while (!quit) {
	fd_set rfs, wfs;
	int ret;
	-
	+
	+ if (winchg)
	+ tresize();
	FD_ZERO(&wfs);
	FD_ZERO(&rfs);
	FD_SET(0, &rfs);
	@@ -494,7 +512,7 @@ main(void)
	}
	if (FD_ISSET(sfd, &wfs)) {
	int wr;
	-
	+
	wr=write(sfd, outb, outp-outb);
	if (wr<0) {
	if (errno==EINTR) continue;