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NCurses: do not resize directly in signal handler, malloc may not be working there

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This commit is contained in:
Maxime Coste 2012-12-03 18:50:44 +01:00
parent 9e3c1c74c5
commit 8724a12dc1
1 changed files with 19 additions and 20 deletions
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39
src/ncurses.cc
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@ -75,20 +75,9 @@ static void set_color(Color fg_color, Color bg_color)
}
}
static NCursesUI* signal_ui = nullptr;
void on_term_resize(int)
{
if (not signal_ui)
return;
int fd = open("/dev/tty", O_RDWR);
winsize ws;
if (fd == -1 or ioctl(fd, TIOCGWINSZ, (void*)&ws) != 0)
return;
close(fd);
resizeterm(ws.ws_row, ws.ws_col);
ungetch(KEY_RESIZE);
signal_ui->update_dimensions();
EventManager::instance().force_signal(0);
}
@ -115,19 +104,17 @@ NCursesUI::NCursesUI()
m_menu_fg = get_color_pair(Color::Blue, Color::Cyan);
m_menu_bg = get_color_pair(Color::Cyan, Color::Blue);
update_dimensions();
assert(signal_ui == nullptr);
signal_ui = this;
signal(SIGWINCH, on_term_resize);
signal(SIGINT, on_sigint);
update_dimensions();
}
NCursesUI::~NCursesUI()
{
endwin();
assert(signal_ui == this);
signal_ui = nullptr;
signal(SIGWINCH, SIG_DFL);
signal(SIGINT, SIG_DFL);
}
static void redraw(WINDOW* menu_win)
@ -238,10 +225,10 @@ bool NCursesUI::is_key_available()
Key NCursesUI::get_key()
{
const unsigned c = getch();
const int c = getch();
if (c > 0 and c < 27)
{
return {Key::Modifiers::Control, c - 1 + 'a'};
return {Key::Modifiers::Control, Codepoint(c) - 1 + 'a'};
}
else if (c == 27)
{
@ -253,6 +240,18 @@ Key NCursesUI::get_key()
else
return Key::Escape;
}
else if (c == KEY_RESIZE)
{
int fd = open("/dev/tty", O_RDWR);
winsize ws;
if (fd != -1 and ioctl(fd, TIOCGWINSZ, (void*)&ws) == 0)
{
close(fd);
resizeterm(ws.ws_row, ws.ws_col);
update_dimensions();
}
return Key::Invalid;
}
else switch (c)
{
case KEY_BACKSPACE: return Key::Backspace;
@ -265,7 +264,7 @@ Key NCursesUI::get_key()
case KEY_BTAB: return Key::BackTab;
}
if (c < 256)
if (c >= 0 and c < 256)
{
ungetch(c);
return utf8::codepoint(getch_iterator{});