display

Layout and Rendering TUI library
git clone git://git.dimitrijedobrota.com/display.git
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commit 5d72bc83d55bf33579c79bb100f437241918f6cb
parent 5aeddc86c66cd8a845f0d0ae753f5062e158504c
author Dimitrije Dobrota < mail@dimitrijedobrota.com >
date Wed, 5 Feb 2025 12:00:38 +0100

Handle screen resize signal

Diffstat:
M example/example.cpp | ----
M source/display.cpp | +++++++++++++++++++ --

2 files changed, 19 insertions(+), 6 deletions(-)

diff --git a/ example/example.cpp b/ example/example.cpp

@@ -13,10 +13,6 @@ int main()

if (event.type() == alec::event::Type::KEY && event.key() == 'q') {
break;
}

const auto size = alec::get_screen_size();
std::cout << std::format("({}, {})\n", std::get<0>(size), std::get<1>(size))
<< std::flush;
}

display::stop();

diff --git a/ source/display.cpp b/ source/display.cpp

@@ -4,6 +4,7 @@

#include "display/display.hpp"

#include <alec/alec.hpp>
#include <signal.h>
#include <termios.h>
#include <unistd.h>

@@ -23,6 +24,12 @@ namespace display


static int start_count = 0; // NOLINT

void handle_sigwinch(int)
{
const auto [col, row] = alec::get_screen_size();
std::cout << col << " " << row << std::endl;
}

void exit()
{
stop(/* force= */ true);

@@ -39,8 +46,19 @@ void start(exit_f f_exit)

throw std::runtime_error("Can't register new exit function");
}

struct sigaction old_sig_action = {};
sigaction(SIGWINCH, nullptr, &old_sig_action);
if (old_sig_action.sa_handler != SIG_IGN) {
struct sigaction new_sig_action = {};

new_sig_action.sa_handler = handle_sigwinch;
sigemptyset(&new_sig_action.sa_mask);
new_sig_action.sa_flags = SA_RESTART;

alec::init_buffer(2);
sigaction(SIGWINCH, &new_sig_action, nullptr);
}

alec::init_buffer(STDIN_FILENO);
write<alec::abuf_enable_v>();
write<alec::cursor_hide_v>();
}

@@ -52,7 +70,6 @@ void stop(bool force)

return;
}


alec::dest_buffer();
write<alec::cursor_show_v>();
}