Draft implementation of MultiProgress for progress bars

include/indicators/block_progress_bar.hpp

@@ -231,6 +231,9 @@ private:
       auto remaining = eta > elapsed ? (eta - elapsed) : (elapsed - eta);
       _print_duration(std::cout, remaining);
       std::cout << "]";
+    } else {
+      if (_show_elapsed_time)
+        std::cout << "]";
     }
 
     if (_max_postfix_text_length == 0)

include/indicators/multi_progress.hpp

@@ -26,51 +26,62 @@ SOFTWARE.
 */
 #pragma once
 #define NOMINMAX
+#include <functional>
 #include <indicators/progress_bar.hpp>
 #include <vector>
-#include <functional>
 
 namespace indicators {
 
-template <size_t count>
-class MultiProgress {
+template <size_t count> class MultiProgress {
 public:
-  void add_progress_bar(ProgressBar& bar) {
+  void add_progress_bar(ProgressBar &bar) {
     _bars.push_back(bar);
     bar._multi_progress_mode = true;
   }
 
   template <size_t index>
-  typename std::enable_if<(index < count), void>::type
-  set_progress(float value) {
-    _bars[index].get().set_progress(value);
+  typename std::enable_if<(index < count), void>::type set_progress(float value) {
+    if (!_bars[index].get().is_completed())
+      _bars[index].get().set_progress(value);
+    _print_progress();
+  }
+
+  template <size_t index> typename std::enable_if<(index < count), void>::type tick() {
+    if (!_bars[index].get().is_completed())
+      _bars[index].get().tick();
     _print_progress();
   }
 
   template <size_t index>
-  typename std::enable_if<(index < count), void>::type    
-  tick() {
-    _bars[index].get().tick();
-    _print_progress();
+  typename std::enable_if<(index < count), bool>::type is_completed() const {
+    return _bars[index].get().is_completed();
   }
 
-  template <size_t index>
-  typename std::enable_if<(index < count), bool>::type    
-  is_completed() const { return _bars[index].get().is_completed(); }
-
 private:
+  std::atomic<bool> _started{false};
+  std::mutex _mutex;
   std::vector<std::reference_wrapper<ProgressBar>> _bars;
 
-  void _print_progress() {
+  bool _all_completed() {
+    bool result{true};
     for (size_t i = 0; i < count; ++i)
-      std::cout << "\x1b[A";
-    for (auto& bar: _bars) {
-      bar.get()._print_progress();
-      std::cout << "\n";
-    }
+      result &= _bars[i].get().is_completed();
+    return result;
   }
 
+  void _print_progress() {
+    std::unique_lock<std::mutex> lock{_mutex};
+    if (_started)
+      for (size_t i = 0; i < count; ++i)
+        std::cout << "\x1b[A";
+    for (auto &bar : _bars) {
+      bar.get()._print_progress(true);
+      std::cout << "\n";
+    }
+    std::cout << termcolor::reset;
+    if (!_started)
+      _started = true;
+  }
 };
 
-}
-
+} // namespace indicators

include/indicators/progress_bar.hpp

@@ -36,7 +36,6 @@ SOFTWARE.
 #include <mutex>
 #include <string>
 #include <thread>
-#include <indicators/multi_progress.hpp>
 
 namespace indicators {
 
@@ -146,10 +145,9 @@ private:
   std::atomic<bool> _saved_start_time{false};
   std::chrono::time_point<std::chrono::high_resolution_clock> _start_time_point;
   std::mutex _mutex;
-  Color _foreground_color;
+  Color _foreground_color{indicators::Color::WHITE};
 
-  template <size_t count>
-  friend class MultiProgress;
+  template <size_t count> friend class MultiProgress;
   std::atomic<bool> _multi_progress_mode{false};
 
   std::ostream &_print_duration(std::ostream &os, std::chrono::nanoseconds ns) {
@@ -181,7 +179,13 @@ private:
     }
   }
 
-  void _print_progress() {    
+  void _print_progress(bool force = false) {
+    if (_multi_progress_mode && !force) {
+      if (_progress > 100.0) {
+        _completed = true;
+      }
+      return;
+    }
     std::unique_lock<std::mutex> lock{_mutex};
     auto now = std::chrono::high_resolution_clock::now();
     auto elapsed = std::chrono::duration_cast<std::chrono::nanoseconds>(now - _start_time_point);
@@ -244,6 +248,9 @@ private:
       auto remaining = eta > elapsed ? (eta - elapsed) : (elapsed - eta);
       _print_duration(std::cout, remaining);
       std::cout << "]";
+    } else {
+      if (_show_elapsed_time)
+        std::cout << "]";
     }
 
     if (_max_postfix_text_length == 0)
@@ -253,7 +260,7 @@ private:
     if (_progress > 100.0) {
       _completed = true;
     }
-    if (_completed)
+    if (_completed && !force)
       std::cout << termcolor::reset << std::endl;
   }
 };

include/indicators/progress_spinner.hpp

@@ -207,6 +207,9 @@ private:
       auto remaining = eta > elapsed ? (eta - elapsed) : (elapsed - eta);
       _print_duration(std::cout, remaining);
       std::cout << "]";
+    } else {
+      if (_show_elapsed_time)
+        std::cout << "]";
     }
 
     if (_max_postfix_text_length == 0)

samples/CMakeLists.txt

@@ -16,3 +16,6 @@ target_link_libraries(progress_spinner PRIVATE indica::indica)
 
 add_executable(time_meter time_meter.cpp)
 target_link_libraries(time_meter PRIVATE indica::indica)
+
+add_executable(multi_progress multi_progress.cpp)
+target_link_libraries(multi_progress PRIVATE indica::indica)

samples/multi_progress.cpp

@@ -0,0 +1,84 @@
+#include <indicators/multi_progress.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<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;
+}