Ignore signals during command execution

Disable signal handlers in wins_prepare_external() and reactivate them
in wins_unprepare_external().

Before, it was possible that resizing the window during editor/pager
mode resulted in the calcurse main screen appearing on top.

Addresses BUG#9.

Signed-off-by: Lukas Fleischer <calcurse@cryptocrack.de>

1 files changed, 14 insertions, 0 deletions

diff --git a/src/sigs.c b/src/sigs.c
index 4cc01bf..77ef6b8 100644
--- a/src/sigs.c
+++ b/src/sigs.c
@@ -108,3 +108,17 @@ void sigs_init()
       || !sigs_set_hdlr(SIGINT, SIG_IGN))
     exit_calcurse(1);
 }
+
+/* Ignore SIGWINCH and SIGTERM signals. */
+void sigs_ignore(void)
+{
+  sigs_set_hdlr(SIGWINCH, SIG_IGN);
+  sigs_set_hdlr(SIGTERM, SIG_IGN);
+}
+
+/* No longer ignore SIGWINCH and SIGTERM signals. */
+void sigs_unignore(void)
+{
+  sigs_set_hdlr(SIGWINCH, generic_hdlr);
+  sigs_set_hdlr(SIGTERM, generic_hdlr);
+}