track_bar2.cpp

demonstrates the use of xtd::forms::track_bar control.

Windows

macOS

Gnome

#include <xtd/forms/application>
#include <xtd/forms/button>
#include <xtd/forms/button_images>
#include <xtd/forms/form>
#include <xtd/forms/track_bar>
#include <xtd/startup>
 
using namespace xtd::forms;
 
class form1 : public form {
public:
  form1() {
    client_size({400, 100});
    controls().push_back_range({track_bar1, button1});
    text("Track bar 2 example");
    
    track_bar1.auto_size(false);
    track_bar1.bounds({40, 10, 200, 80});
    track_bar1.set_range(0, 100);
    track_bar1.tick_frequency(10);
    track_bar1.value_changed += [&] {
      if (muted && track_bar1.value()) muted = false;
      if (!muted || track_bar1.value()) volume = track_bar1.value();
      
      if (track_bar1.value() == 0) button1.image(button_images::from_name("audio-volume-muted", xtd::drawing::size {64, 64}));
      else if (track_bar1.value() < 30) button1.image(button_images::from_name("audio-volume-low", xtd::drawing::size {64, 64}));
      else if (track_bar1.value() < 80) button1.image(button_images::from_name("audio-volume-medium", xtd::drawing::size {64, 64}));
      else button1.image(button_images::from_name("audio-volume-high", xtd::drawing::size {64, 64}));
    };
    track_bar1.value(60);
    
    button1.bounds({280, 10, 80, 80});
    button1.click += [&] {
      muted = !muted;
      track_bar1.value(muted ? 0 : volume);
    };
  }
  
  static auto main() {
    application::run(form1 {});
  }
  
private:
  bool muted = false;
  int volume = 0;
  track_bar track_bar1;
  button button1;
};
 
startup_(form1::main);