stopwatch_form.cpp

demonstrates the use of xtd::forms::button, xtd::forms::label controls and xtd::forms::timer component.

Windows

macOS

Gnome

#include <xtd/diagnostics/stopwatch>
#include <xtd/drawing/color_converter>
#include <xtd/forms/application>
#include <xtd/forms/button>
#include <xtd/forms/form>
#include <xtd/forms/lcd_label>
#include <xtd/forms/panel>
#include "../properties/resources.hpp"
 
using namespace xtd;
using namespace xtd::drawing;
using namespace xtd::forms;
 
class main_form : public form {
public:
  main_form() {
    text("Stopwatch");
    start_position(form_start_position::center_screen);
    client_size({275, 120});
    icon(stopwatch_form::properties::resources::stopwatch_ico());
    form_border_style(forms::form_border_style::fixed_single);
    maximize_box(false);
    
    watch_panel.parent(*this);
    watch_panel.border_style(forms::border_style::bevel_inset);
    watch_panel.bounds({20, 10, 235, 50});
    watch_panel.back_color(color_converter::average(color::black, color::lime, 0.25));
    watch_panel.fore_color(color::lime);
    
    watch.parent(watch_panel);
    watch.bounds({10, 8, 214, 33});
    watch.text("00:00:00.000");
    
    start_stop.parent(*this);
    start_stop.location({10, 80});
    start_stop.text("Start");
    start_stop.click += event_handler(*this, &main_form::on_start_stop_click);
    
    pause_resume.parent(*this);
    pause_resume.location({100, 80});
    pause_resume.text("Pause");
    pause_resume.enabled(false);
    pause_resume.click += event_handler(*this, &main_form::on_pause_resume_click);
    
    reset.parent(*this);
    reset.location({190, 80});
    reset.text("Reset");
    reset.enabled(false);
    reset.click += event_handler(*this, &main_form::on_reset_click);
    
    timer_chrono.interval(11_ms);
    timer_chrono.tick += event_handler(*this, &main_form::on_timer_tick);
  }
  
private:
  void on_start_stop_click(object& sender, const event_args& e) {
    if (stopwatch.is_running()) stopwatch.stop();
    else stopwatch.start();
    
    timer_chrono.enabled(stopwatch.is_running());
    start_stop.text(timer_chrono.enabled() ? "Stop" :  "Start");
    pause_resume.enabled(timer_chrono.enabled());
    reset.enabled(!timer_chrono.enabled() || !stopwatch.is_running());
  };
  
  void on_pause_resume_click(object& sender, const event_args& e) {
    timer_chrono.enabled(!timer_chrono.enabled());
    pause_resume.text(timer_chrono.enabled() ? "Pause" :  "Resume");
    start_stop.enabled(timer_chrono.enabled());
    reset.enabled(!timer_chrono.enabled() || !stopwatch.is_running());
  };
  
  void on_reset_click(object& sender, const event_args& e) {
    timer_chrono.enabled(false);
    stopwatch.reset();
    start_stop.enabled(true);
    pause_resume.enabled(false);
    reset.enabled(false);
    watch.text("00:00:00.000");
    start_stop.text("Start");
    pause_resume.text("Pause");
  };
  
  void on_timer_tick(object& sender, const event_args& e) {
    watch.text(string::format("{0:H}:{0:M}:{0:S}.{0:L}", stopwatch.elapsed()));
  };
  
  xtd::diagnostics::stopwatch stopwatch;
  panel watch_panel;
  lcd_label watch;
  button start_stop;
  button pause_resume;
  button reset;
  timer timer_chrono;
};
 
auto main() -> int {
  application::run(main_form());
}