Set clang-format macro indent.

1) Set clang-format macro indent.
2) Run clang-format on every files.

.clang-format

@@ -2,3 +2,4 @@
 # http://clang.llvm.org/docs/ClangFormatStyleOptions.html
 BasedOnStyle: Chromium
 Standard: Cpp11
+IndentPPDirectives: BeforeHash

include/ftxui/component/checkbox.hpp

@@ -1,9 +1,10 @@
 #ifndef FTXUI_COMPONENT_CHECKBOX_HPP
 #define FTXUI_COMPONENT_CHECKBOX_HPP
 
-#include "ftxui/component/component.hpp"
 #include <functional>
 
+#include "ftxui/component/component.hpp"
+
 namespace ftxui {
 
 class CheckBox : public Component {
@@ -15,8 +16,8 @@ class CheckBox : public Component {
   bool state = false;
   std::wstring label = L"label";
 
-  //std::wstring checked = L"[X] ";
-  //std::wstring unchecked = L"[ ] ";
+  // std::wstring checked = L"[X] ";
+  // std::wstring unchecked = L"[ ] ";
   std::wstring checked = L"▣ ";
   std::wstring unchecked = L"☐ ";
 
@@ -24,7 +25,7 @@ class CheckBox : public Component {
   Decorator unfocused_style = nothing;
 
   // State update callback.
-  std::function<void()> on_change = [](){};
+  std::function<void()> on_change = []() {};
 
   // Component implementation.
   Element Render() override;

include/ftxui/component/component.hpp

@@ -11,7 +11,6 @@ class Focus;
 
 class Component {
  public:
-
   // Constructor/Destructor.
   Component() = default;
   virtual ~Component();

include/ftxui/component/input.hpp

@@ -1,9 +1,10 @@
 #ifndef FTXUI_COMPONENT_INPUT_H_
 #define FTXUI_COMPONENT_INPUT_H_
 
-#include "ftxui/component/component.hpp"
 #include <functional>
 
+#include "ftxui/component/component.hpp"
+
 namespace ftxui {
 
 class Input : public Component {
@@ -17,8 +18,8 @@ class Input : public Component {
   std::wstring placeholder;
 
   // State update callback.
-  std::function<void()> on_change = [](){};
-  std::function<void()> on_enter = [](){};
+  std::function<void()> on_change = []() {};
+  std::function<void()> on_enter = []() {};
 
   // Component implementation.
   Element Render() override;

include/ftxui/component/menu.hpp

@@ -1,9 +1,10 @@
 #ifndef FTXUI_COMPONENT_MENU
 #define FTXUI_COMPONENT_MENU
 
+#include <functional>
+
 #include "ftxui/component/component.hpp"
 #include "ftxui/dom/elements.hpp"
-#include <functional>
 
 namespace ftxui {
 
@@ -22,14 +23,14 @@ class Menu : public Component {
   Decorator normal_style = nothing;
 
   // State update callback.
-  std::function<void()> on_change = [](){};
-  std::function<void()> on_enter = [](){};
+  std::function<void()> on_change = []() {};
+  std::function<void()> on_enter = []() {};
 
   // Component implementation.
   Element Render() override;
   bool OnEvent(Event) override;
 };
 
-}  // namespace ftxui::Component
+}  // namespace ftxui
 
 #endif /* end of include guard: FTXUI_COMPONENT_MENU */

include/ftxui/component/radiobox.hpp

@@ -1,9 +1,10 @@
 #ifndef FTXUI_COMPONENT_RADIOBOX_HPP
 #define FTXUI_COMPONENT_RADIOBOX_HPP
 
-#include "ftxui/component/component.hpp"
 #include <functional>
 
+#include "ftxui/component/component.hpp"
+
 namespace ftxui {
 
 class RadioBox : public Component {
@@ -23,7 +24,7 @@ class RadioBox : public Component {
   Decorator unfocused_style = nothing;
 
   // State update callback.
-  std::function<void()> on_change = [](){};
+  std::function<void()> on_change = []() {};
 
   // Component implementation.
   Element Render() override;

include/ftxui/component/screen_interactive.hpp

@@ -1,12 +1,12 @@
 #ifndef FTXUI_COMPONENT_SCREEN_INTERACTIVE_HPP
 #define FTXUI_COMPONENT_SCREEN_INTERACTIVE_HPP
 
+#include <atomic>
 #include <condition_variable>
 #include <functional>
 #include <memory>
 #include <mutex>
 #include <queue>
-#include <atomic>
 
 #include "ftxui/component/event.hpp"
 #include "ftxui/screen/screen.hpp"

include/ftxui/component/toggle.hpp

@@ -1,10 +1,11 @@
 #ifndef FTXUI_COMPONENT_TOGGLE_H_
 #define FTXUI_COMPONENT_TOGGLE_H_
 
-#include "ftxui/component/component.hpp"
 #include <functional>
 #include <string>
 
+#include "ftxui/component/component.hpp"
+
 namespace ftxui {
 
 class Toggle : public Component {
@@ -21,13 +22,13 @@ class Toggle : public Component {
   Decorator normal_style = dim;
 
   // Callback.
-  std::function<void()> on_change = [](){};
+  std::function<void()> on_change = []() {};
 
   // Component implementation.
   Element Render() override;
   bool OnEvent(Event) override;
 };
 
-}  // namespace ftxui::Component
+}  // namespace ftxui
 
 #endif /* end of include guard: FTXUI_COMPONENT_TOGGLE_H_ */

include/ftxui/dom/node.hpp

@@ -30,6 +30,7 @@ class Node {
   virtual void Render(Screen& screen);
 
   std::vector<std::unique_ptr<Node>> children;
+
  protected:
   Requirement requirement_;
   Box box_;

include/ftxui/dom/requirement.hpp

@@ -7,10 +7,16 @@ namespace ftxui {
 
 struct Requirement {
   // The required size to fully draw the element.
-  struct { int x = 0; int y = 0; } min;
+  struct {
+    int x = 0;
+    int y = 0;
+  } min;
 
   // How much flexibility is given to the component.
-  struct { int x = 0; int y = 0; } flex;
+  struct {
+    int x = 0;
+    int y = 0;
+  } flex;
 
   // Frame.
   enum Selection {

include/ftxui/dom/take_any_args.hpp

@@ -10,7 +10,7 @@ inline void Merge(Elements& container, Element element) {
 
 template <>
 inline void Merge(Elements& container, Elements elements) {
-  for(auto& element : elements)
+  for (auto& element : elements)
     container.push_back(std::move(element));
 }
 
@@ -24,7 +24,7 @@ Elements unpack(Args... args) {
 
 // Make |container| able to take any number of argments.
 #define TAKE_ANY_ARGS(container)                               \
-template <class... Args> \
-Element container(Args... children) { \
+  template <class... Args>                                     \
+  Element container(Args... children) {                        \
     return container(unpack(std::forward<Args>(children)...)); \
-}
+  }

include/ftxui/screen/screen.hpp

@@ -1,15 +1,15 @@
 #ifndef FTXUI_SCREEN_SCREEN
 #define FTXUI_SCREEN_SCREEN
 
+#include <memory>
 #include <string>
 #include <vector>
-#include <memory>
 
-#include "ftxui/screen/color.hpp"
 #include "ftxui/screen/box.hpp"
+#include "ftxui/screen/color.hpp"
 
 namespace ftxui {
-  class Node;
+class Node;
 }
 
 namespace ftxui {
@@ -49,8 +49,8 @@ class Screen {
   std::string ToString();
 
   // Get screen dimensions.
-  int dimx() { return dimx_;}
-  int dimy() { return dimy_;}
+  int dimx() { return dimx_; }
+  int dimy() { return dimy_; }
 
   // Move the terminal cursor n-lines up with n = dimy().
   std::string ResetPosition();

include/ftxui/screen/string.hpp

@@ -6,7 +6,7 @@
 std::string to_string(const std::wstring& s);
 std::wstring to_wstring(const std::string& s);
 
-template<typename T>
+template <typename T>
 std::wstring to_wstring(T s) {
   return to_wstring(std::to_string(s));
 }

include/ftxui/util/autoreset.hpp

@@ -3,15 +3,15 @@
 
 namespace ftxui {
 
-template<typename T>
+template <typename T>
 class AutoReset {
  public:
   AutoReset(T* variable, T new_value)
-      : variable_(variable),
-        previous_value_(std::move(*variable)) {
+      : variable_(variable), previous_value_(std::move(*variable)) {
     *variable_ = std::move(new_value);
   }
   ~AutoReset() { *variable_ = std::move(previous_value_); }
+
  private:
   T* variable_;
   T previous_value_;

src/ftxui/component/input.cpp

@@ -1,7 +1,9 @@
 #include "ftxui/component/input.hpp"
-#include "ftxui/screen/string.hpp"
+
 #include <algorithm>
 
+#include "ftxui/screen/string.hpp"
+
 namespace ftxui {
 
 // Component implementation.
@@ -22,15 +24,14 @@ Element Input::Render() {
   if (!is_focused)
     return text(content) | main_decorator;
 
-  std::wstring part_before_cursor = content.substr(0,cursor_position);
+  std::wstring part_before_cursor = content.substr(0, cursor_position);
   std::wstring part_at_cursor = cursor_position < (int)content.size()
                                     ? content.substr(cursor_position, 1)
                                     : L" ";
   std::wstring part_after_cursor = cursor_position < (int)content.size() - 1
                                        ? content.substr(cursor_position + 1)
                                        : L"";
-  auto focused = 
-    is_focused ? focus : select;
+  auto focused = is_focused ? focus : select;
 
   // clang-format off
   return

src/ftxui/component/menu.cpp

@@ -1,7 +1,7 @@
 #include "ftxui/component/menu.hpp"
+
 #include <algorithm>
 #include <iostream>
-#include <algorithm>
 
 namespace ftxui {
 

src/ftxui/component/radiobox.cpp

@@ -1,6 +1,7 @@
 #include "ftxui/component/radiobox.hpp"
-#include <functional>
+
 #include <algorithm>
+#include <functional>
 
 namespace ftxui {
 
@@ -41,7 +42,7 @@ bool RadioBox::OnEvent(Event event) {
     return true;
   }
 
-  if (event == Event::Character(' ') || event==Event::Return) {
+  if (event == Event::Character(' ') || event == Event::Return) {
     selected = focused;
     on_change();
   }

src/ftxui/component/screen_interactive.cpp

@@ -3,16 +3,18 @@
 #include <stdio.h>
 #include <termios.h>
 #include <unistd.h>
+
+#include <algorithm>
 #include <csignal>
 #include <iostream>
 #include <stack>
 #include <thread>
+
 #include "ftxui/component/component.hpp"
 #include "ftxui/screen/string.hpp"
 #include "ftxui/screen/terminal.hpp"
-#include <algorithm>
 
-#if defined(__clang__) && defined (__APPLE__)
+#if defined(__clang__) && defined(__APPLE__)
   // Quick exit is missing in standard CLang headers
   #define quick_exit(a) exit(a)
 #endif
@@ -42,14 +44,12 @@ auto install_signal_handler = [](int sig, SignalHandler handler) {
   on_exit_functions.push([&]() { std::signal(sig, old_signal_handler); });
 };
 
-std::function<void()> on_resize = []{};
+std::function<void()> on_resize = [] {};
 void OnResize(int /* signal */) {
   on_resize();
 }
 
-ScreenInteractive::ScreenInteractive(int dimx,
-                                     int dimy,
-                                     Dimension dimension)
+ScreenInteractive::ScreenInteractive(int dimx, int dimy, Dimension dimension)
     : Screen(dimx, dimy), dimension_(dimension) {}
 ScreenInteractive::~ScreenInteractive() {}
 
@@ -176,8 +176,7 @@ void ScreenInteractive::Draw(Component* component) {
   if (dimx != dimx_ || dimy != dimy_) {
     dimx_ = dimx;
     dimy_ = dimy;
-    pixels_ = std::vector<std::vector<Pixel>>(
-        dimy, std::vector<Pixel>(dimx));
+    pixels_ = std::vector<std::vector<Pixel>>(dimy, std::vector<Pixel>(dimx));
     cursor_.x = dimx_ - 1;
     cursor_.y = dimy_ - 1;
   }

src/ftxui/component/toggle.cpp

@@ -1,4 +1,5 @@
 #include "ftxui/component/toggle.hpp"
+
 #include <algorithm>
 
 namespace ftxui {

src/ftxui/dom/border.cpp

@@ -1,8 +1,8 @@
+#include <algorithm>
+
 #include "ftxui/dom/elements.hpp"
 #include "ftxui/dom/node.hpp"
 
-#include <algorithm>
-
 namespace ftxui {
 
 using namespace ftxui;

src/ftxui/dom/dbox.cpp

@@ -1,8 +1,8 @@
+#include <algorithm>
+
 #include "ftxui/dom/elements.hpp"
 #include "ftxui/dom/node.hpp"
 
-#include <algorithm>
-
 namespace ftxui {
 
 class DBox : public Node {

src/ftxui/dom/frame.cpp

@@ -4,8 +4,6 @@
 #include "ftxui/dom/node.hpp"
 #include "ftxui/util/autoreset.hpp"
 
-#include <algorithm>
-
 namespace ftxui {
 
 using namespace ftxui;

src/ftxui/dom/hbox.cpp

@@ -3,8 +3,6 @@
 #include "ftxui/dom/elements.hpp"
 #include "ftxui/dom/node.hpp"
 
-#include <algorithm>
-
 namespace ftxui {
 
 class HBox : public Node {

src/ftxui/dom/hflow.cpp

@@ -1,8 +1,8 @@
+#include <algorithm>
+
 #include "ftxui/dom/elements.hpp"
 #include "ftxui/dom/node.hpp"
 
-#include <algorithm>
-
 namespace ftxui {
 
 class HFlow : public Node {

src/ftxui/dom/size.cpp

@@ -3,8 +3,6 @@
 #include "ftxui/dom/elements.hpp"
 #include "ftxui/dom/node.hpp"
 
-#include <algorithm>
-
 namespace ftxui {
 
 class Size : public Node {

src/ftxui/dom/vbox.cpp

@@ -3,8 +3,6 @@
 #include "ftxui/dom/elements.hpp"
 #include "ftxui/dom/node.hpp"
 
-#include <algorithm>
-
 namespace ftxui {
 
 class VBox : public Node {

src/ftxui/screen/screen.cpp

@@ -7,7 +7,6 @@
 #include "ftxui/screen/string.hpp"
 #include "ftxui/screen/terminal.hpp"
 
-
 namespace ftxui {
 
 namespace {

src/ftxui/screen/terminal.cpp

@@ -3,12 +3,12 @@
 #include <stdio.h>
 
 #ifdef WIN32
-#define WIN32_LEAN_AND_MEAN
-#define NOMINMAX
-#include <Windows.h>
+  #define WIN32_LEAN_AND_MEAN
+  #define NOMINMAX
+  #include <Windows.h>
 #else
-#include <sys/ioctl.h>
-#include <unistd.h>
+  #include <sys/ioctl.h>
+  #include <unistd.h>
 #endif
 
 #include <iostream>

src/ftxui/screen/wcwidth.cpp

@@ -59,9 +59,10 @@
  * Latest version: http://www.cl.cam.ac.uk/~mgk25/ucs/wcwidth.c
  */
 
-#include "ftxui/screen/string.hpp"
 #include <wchar.h>
 
+#include "ftxui/screen/string.hpp"
+
 namespace {
 struct interval {
   int first;