Update README.md

README.md

@@ -297,6 +297,104 @@ int main() {
 }
 ```
 
+# MultiProgress
+
+`indicators` supports management of multiple progress bars using the `MultiProgress` class. 
+
+<p align="center">
+  <img src="img/multi_progress.gif"/>  
+</p>
+
+`MultiProgress<typename Indicator, size_t count>` is a template class that holds references to progress bars and provides a safe interface to update the state of multiple bars. `MultiProgress` works with both `ProgressBar` and `BlockProgressBar`.
+
+```cpp
+#include <indicators/multi_progress.hpp>
+#include <indicators/progress_bar.hpp>
+
+int main() {
+
+  indicators::ProgressBar bar1;
+  bar1.set_bar_width(50);
+  bar1.start_bar_with("[");
+  bar1.fill_bar_progress_with("■");
+  bar1.lead_bar_progress_with("■");
+  bar1.fill_bar_remainder_with(" ");
+  bar1.end_bar_with(" ]");
+  bar1.set_foreground_color(indicators::Color::YELLOW);
+  bar1.show_elapsed_time();
+  bar1.show_remaining_time();
+  bar1.set_prefix_text("Progress Bar #1 ");
+
+  indicators::ProgressBar bar2;
+  bar2.set_bar_width(50);
+  bar2.start_bar_with("[");
+  bar2.fill_bar_progress_with("=");
+  bar2.lead_bar_progress_with(">");
+  bar2.fill_bar_remainder_with(" ");
+  bar2.end_bar_with(" ]");
+  bar2.set_foreground_color(indicators::Color::CYAN);
+  bar2.show_elapsed_time();
+  bar2.show_remaining_time();
+  bar2.set_prefix_text("Progress Bar #2 ");
+
+  indicators::ProgressBar bar3;
+  bar3.set_bar_width(50);
+  bar3.start_bar_with("[");
+  bar3.fill_bar_progress_with("#");
+  bar3.lead_bar_progress_with("#");
+  bar3.fill_bar_remainder_with(" ");
+  bar3.end_bar_with(" ]");
+  bar3.set_foreground_color(indicators::Color::RED);
+  bar3.show_elapsed_time();
+  bar3.show_remaining_time();
+  bar3.set_prefix_text("Progress Bar #3 ");
+
+  indicators::MultiProgress<indicators::ProgressBar, 3> bars;
+  bars.add_progress_bar(bar1);
+  bars.add_progress_bar(bar2);
+  bars.add_progress_bar(bar3);
+
+  std::cout << "Multiple Progress Bars:\n";
+
+  auto job1 = [&bars]() {
+    while (true) {
+      bars.tick<0>();
+      if (bars.is_completed<0>())
+        break;
+      std::this_thread::sleep_for(std::chrono::milliseconds(100));
+    }
+  };
+
+  auto job2 = [&bars]() {
+    while (true) {
+      bars.tick<1>();
+      if (bars.is_completed<1>())
+        break;
+      std::this_thread::sleep_for(std::chrono::milliseconds(200));
+    }
+  };
+
+  auto job3 = [&bars]() {
+    while (true) {
+      bars.tick<2>();
+      if (bars.is_completed<2>())
+        break;
+      std::this_thread::sleep_for(std::chrono::milliseconds(60));
+    }
+  };
+
+  std::thread first_job(job1);
+  std::thread second_job(job2);
+  std::thread third_job(job3);
+
+  first_job.join();
+  second_job.join();
+  third_job.join();
+
+  return 0;
+}
+```
+
 # Progress Spinner
 
 To introduce a progress spinner in your application, include `indicators/progress_spinner.hpp` and create a `ProgressSpinner` object.