84 lines
2.0 KiB
C++
84 lines
2.0 KiB
C++
#include <LibFont/Font.h>
|
|
#include <LibGUI/Window.h>
|
|
|
|
#include <time.h>
|
|
|
|
static BAN::String get_task_bar_string()
|
|
{
|
|
BAN::String result;
|
|
|
|
const time_t current_time = time(nullptr);
|
|
if (!result.append(ctime(¤t_time)).is_error())
|
|
result.pop_back();
|
|
|
|
return result;
|
|
}
|
|
|
|
int main()
|
|
{
|
|
constexpr uint32_t padding = 3;
|
|
constexpr uint32_t bg_color = 0xFF202020;
|
|
constexpr uint32_t fg_color = 0xFFFFFFFF;
|
|
|
|
auto font = MUST(LibFont::Font::load("/usr/share/fonts/lat0-16.psfu"_sv));
|
|
|
|
auto attributes = LibGUI::Window::default_attributes;
|
|
attributes.title_bar = false;
|
|
attributes.movable = false;
|
|
attributes.focusable = false;
|
|
attributes.alpha_channel = false;
|
|
attributes.rounded_corners = false;
|
|
|
|
auto window = MUST(LibGUI::Window::create(0, font.height() + 2 * padding, "TaskBar", attributes));
|
|
|
|
window->set_close_window_event_callback([]() {});
|
|
|
|
window->set_position(0, 0);
|
|
|
|
window->fill(bg_color);
|
|
window->invalidate();
|
|
|
|
bool is_running = true;
|
|
|
|
const auto update_time_string =
|
|
[&]()
|
|
{
|
|
const auto text = get_task_bar_string();
|
|
|
|
const uint32_t text_w = text.size() * font.width();
|
|
const uint32_t text_h = font.height();
|
|
const uint32_t text_x = window->width() - text_w - padding;
|
|
const uint32_t text_y = padding;
|
|
|
|
window->fill_rect(text_x, text_y, text_w, text_h, bg_color);
|
|
window->draw_text(text, font, text_x, text_y, fg_color);
|
|
window->invalidate(text_x, text_y, text_w, text_h);
|
|
};
|
|
|
|
while (is_running)
|
|
{
|
|
update_time_string();
|
|
|
|
constexpr uint64_t ns_per_s = 1'000'000'000;
|
|
|
|
timespec current_ts;
|
|
clock_gettime(CLOCK_REALTIME, ¤t_ts);
|
|
|
|
uint64_t current_ns = 0;
|
|
current_ns += current_ts.tv_sec * ns_per_s;
|
|
current_ns += current_ts.tv_nsec;
|
|
|
|
uint64_t target_ns = current_ns;
|
|
if (auto rem = target_ns % ns_per_s)
|
|
target_ns += ns_per_s - rem;
|
|
|
|
uint64_t sleep_ns = target_ns - current_ns;
|
|
|
|
timespec sleep_ts;
|
|
sleep_ts.tv_sec = sleep_ns / ns_per_s;
|
|
sleep_ts.tv_nsec = sleep_ns % ns_per_s;
|
|
|
|
nanosleep(&sleep_ts, nullptr);
|
|
}
|
|
}
|