Execute clang tidy. (#477)

src/ftxui/component/component_options.cpp

@@ -181,11 +181,13 @@ ButtonOption ButtonOption::Animated(Color color) {
 /// @brief Create a ButtonOption, using animated colors.
 // static
 ButtonOption ButtonOption::Animated(Color background, Color foreground) {
+  // NOLINTBEGIN
   return ButtonOption::Animated(
       /*bakground=*/background,
       /*foreground=*/foreground,
       /*background_active=*/foreground,
       /*foreground_active=*/background);
+  // NOLINTEND
 }
 
 /// @brief Create a ButtonOption, using animated colors.

src/ftxui/component/screen_interactive.cpp

@@ -10,6 +10,7 @@
 #include <iostream>  // for cout, ostream, basic_ostream, operator<<, endl, flush
 #include <stack>     // for stack
 #include <thread>    // for thread, sleep_for
+#include <tuple>
 #include <type_traits>  // for decay_t
 #include <utility>      // for move, swap
 #include <variant>      // for visit
@@ -240,7 +241,8 @@ void OnExit(int signal) {
 
 const auto install_signal_handler = [](int sig, SignalHandler handler) {
   auto old_signal_handler = std::signal(sig, handler);
-  on_exit_functions.push([=] { std::signal(sig, old_signal_handler); });
+  on_exit_functions.push(
+      [=] { std::ignore = std::signal(sig, old_signal_handler); });
 };
 
 Closure g_on_resize = [] {};  // NOLINT
@@ -289,22 +291,42 @@ ScreenInteractive::ScreenInteractive(int dimx,
 
 // static
 ScreenInteractive ScreenInteractive::FixedSize(int dimx, int dimy) {
-  return ScreenInteractive(dimx, dimy, Dimension::Fixed, false);
+  return {
+      dimx,
+      dimy,
+      Dimension::Fixed,
+      false,
+  };
 }
 
 // static
 ScreenInteractive ScreenInteractive::Fullscreen() {
-  return ScreenInteractive(0, 0, Dimension::Fullscreen, true);
+  return {
+      0,
+      0,
+      Dimension::Fullscreen,
+      true,
+  };
 }
 
 // static
 ScreenInteractive ScreenInteractive::TerminalOutput() {
-  return ScreenInteractive(0, 0, Dimension::TerminalOutput, false);
+  return {
+      0,
+      0,
+      Dimension::TerminalOutput,
+      false,
+  };
 }
 
 // static
 ScreenInteractive ScreenInteractive::FitComponent() {
-  return ScreenInteractive(0, 0, Dimension::FitComponent, false);
+  return {
+      0,
+      0,
+      Dimension::FitComponent,
+      false,
+  };
 }
 
 void ScreenInteractive::Post(Task task) {
@@ -684,7 +706,7 @@ void ScreenInteractive::SigStop() {
     dimx_ = 0;
     dimy_ = 0;
     Flush();
-    std::raise(SIGTSTP);
+    std::ignore = std::raise(SIGTSTP);
     Install();
   });
 #endif

src/ftxui/component/slider.cpp

@@ -33,7 +33,7 @@ Decorator flexDirection(GaugeDirection direction) {
 template <class T>
 class SliderBase : public ComponentBase {
  public:
-  SliderBase(Ref<SliderOption<T>> options)
+  explicit SliderBase(Ref<SliderOption<T>> options)
       : value_(options->value),
         min_(options->min),
         max_(options->max),
@@ -125,8 +125,9 @@ class SliderBase : public ComponentBase {
     }
 
     value_() = util::clamp(value_(), min_(), max_());
-    if (old_value != value_())
+    if (old_value != value_()) {
       return true;
+    }
 
     return ComponentBase::OnEvent(event);
   }
@@ -196,15 +197,17 @@ class SliderBase : public ComponentBase {
 
 class SliderWithLabel : public ComponentBase {
  public:
-  SliderWithLabel(ConstStringRef label, Component inner) : label_(label) {
+  SliderWithLabel(ConstStringRef label, Component inner)
-    Add(inner);
+      : label_(std::move(label)) {
-    SetActiveChild(inner);
+    Add(std::move(inner));
+    SetActiveChild(ChildAt(0));
   }
 
  private:
   bool OnEvent(Event event) final {
-    if (ComponentBase::OnEvent(event))
+    if (ComponentBase::OnEvent(event)) {
       return true;
+    }
 
     if (!event.is_mouse()) {
       return false;
@@ -272,7 +275,7 @@ Component Slider(ConstStringRef label,
   option.max = max;
   option.increment = increment;
   auto slider = Make<SliderBase<int>>(option);
-  return Make<SliderWithLabel>(label, slider);
+  return Make<SliderWithLabel>(std::move(label), slider);
 }
 
 Component Slider(ConstStringRef label,
@@ -286,7 +289,7 @@ Component Slider(ConstStringRef label,
   option.max = max;
   option.increment = increment;
   auto slider = Make<SliderBase<float>>(option);
-  return Make<SliderWithLabel>(label, slider);
+  return Make<SliderWithLabel>(std::move(label), slider);
 }
 Component Slider(ConstStringRef label,
                  Ref<long> value,
@@ -299,7 +302,7 @@ Component Slider(ConstStringRef label,
   option.max = max;
   option.increment = increment;
   auto slider = Make<SliderBase<long>>(option);
-  return Make<SliderWithLabel>(label, slider);
+  return Make<SliderWithLabel>(std::move(label), slider);
 }
 
 /// @brief A slider in any direction.