Hiding and showing cursor with CSI sequences. Updated progress spinner states

include/progress/bar.hpp

@@ -6,12 +6,22 @@
 #include <thread>
 
 class ProgressBar {
-  std::string _name{"Running"};
-  size_t _bar_width{80};  
-  std::string _start{"|"};
-  std::string _end{"|"};
-  std::mutex _mutex;
+  std::string _name{""};
   float _progress{0.0};
+  size_t _bar_width{80};  
+  std::string _start{"["};
+  std::string _step{"■"};
+  std::string _head{"■"};
+  std::string _end{"]"};
+  std::mutex _mutex;
+
+  void hide_cursor() {
+    std::cout << "\e[?25l";
+  }
+
+  void show_cursor() {
+    std::cout << "\e[?25h";
+  }
   
 public:
 
@@ -20,14 +30,17 @@ public:
   void increment(float value) {
     std::unique_lock<std::mutex> lock{_mutex};    
     _progress = value / 100.0;
-    std::cout << _name << " [";
+    hide_cursor();
+    std::cout << _start;
     float pos = _progress * static_cast<float>(_bar_width);
     for (size_t i = 0; i < _bar_width; ++i) {
-      if (i < pos) std::cout << '#';
-      else if (i == pos) std::cout << ">";
-      else std::cout << " ";
+      if (i < pos) std::cout << _step;
+      else if (i == pos) std::cout << _head;
+      else std::cout << "-";
     }
-    std::cout << "] " << static_cast<int>(value) << "%\r";
+    std::cout << _end << " " << static_cast<int>(value) << "%";
+    std::cout << " " << _name << "\r";
     std::cout.flush();
+    show_cursor();
   }
 };