Parse mouse events.

examples/util/print_key_press.cpp

@@ -23,10 +23,35 @@ class DrawKey : public Component {
         code += L" " + std::to_wstring((unsigned int)it);
 
       code = L"(" + code + L" ) -> ";
-      if (keys[i].is_character())
-        code += keys[i].character();
-      else
+      if (keys[i].is_character()) {
+        code += std::wstring(L"character(") + keys[i].character() + L")";
+      } else if (keys[i].is_mouse_move()) {
+        code += L"mouse_move(" +  //
+                std::to_wstring(keys[i].mouse_x()) + L"," +
+                std::to_wstring(keys[i].mouse_y()) + L")";
+      } else if (keys[i].is_mouse_up()) {
+        code += L"mouse_up(" +  //
+                std::to_wstring(keys[i].mouse_x()) + L"," +
+                std::to_wstring(keys[i].mouse_y()) + L")";
+      } else if (keys[i].is_mouse_left_down()) {
+        code += L"mouse_left_down(" +  //
+                std::to_wstring(keys[i].mouse_x()) + L"," +
+                std::to_wstring(keys[i].mouse_y()) + L")";
+      } else if (keys[i].is_mouse_left_move()) {
+        code += L"mouse_left_move(" +  //
+                std::to_wstring(keys[i].mouse_x()) + L"," +
+                std::to_wstring(keys[i].mouse_y()) + L")";
+      } else if (keys[i].is_mouse_right_down()) {
+        code += L"mouse_right_down(" +  //
+                std::to_wstring(keys[i].mouse_x()) + L"," +
+                std::to_wstring(keys[i].mouse_y()) + L")";
+      } else if (keys[i].is_mouse_right_move()) {
+        code += L"mouse_right_move(" +  //
+                std::to_wstring(keys[i].mouse_x()) + L"," +
+                std::to_wstring(keys[i].mouse_y()) + L")";
+      } else {
         code += L"(special)";
+      }
       children.push_back(text(code));
     }
     return window(text(L"keys"), vbox(std::move(children)));

include/ftxui/component/event.hpp

@@ -26,8 +26,14 @@ struct Event {
   static Event Character(char);
   static Event Character(wchar_t);
 
-  static Event Character(const std::string&);
-  static Event Special(const std::string&);
+  static Event Character(std::string);
+  static Event Special(std::string);
+  static Event MouseMove(std::string, int x, int y);
+  static Event MouseUp(std::string, int x, int y);
+  static Event MouseLeftMove(std::string, int x, int y);
+  static Event MouseLeftDown(std::string, int x, int y);
+  static Event MouseRightMove(std::string, int x, int y);
+  static Event MouseRightDown(std::string, int x, int y);
 
   // --- Arrow ---
   static const Event ArrowLeft;
@@ -48,17 +54,47 @@ struct Event {
   static Event Custom;
 
   //--- Method section ---------------------------------------------------------
-  bool is_character() const { return is_character_; }
+  bool is_character() const { return type_ == Type::Character;}
   wchar_t character() const { return character_; }
+
+  bool is_mouse_left_down() const { return type_ == Type::MouseLeftDown; }
+  bool is_mouse_left_move() const { return type_ == Type::MouseLeftMove; }
+  bool is_mouse_right_down() const { return type_ == Type::MouseRightDown; }
+  bool is_mouse_right_move() const { return type_ == Type::MouseRightMove; }
+  bool is_mouse_up() const { return type_ == Type::MouseUp; }
+  bool is_mouse_move() const { return type_ == Type::MouseMove; }
+  int mouse_x() const { return mouse_.x; }
+  int mouse_y() const { return mouse_.y; }
+
   const std::string& input() const { return input_; }
 
   bool operator==(const Event& other) const { return input_ == other.input_; }
 
   //--- State section ----------------------------------------------------------
  private:
-  std::string input_;
-  bool is_character_ = false;
+  enum class Type {
+    Unknown,
+    Character,
+    MouseMove,
+    MouseUp,
+    MouseLeftDown,
+    MouseLeftMove,
+    MouseRightDown,
+    MouseRightMove,
+  };
+
+  struct Mouse {
+    int x;
+    int y;
+  };
+
+  Type type_ = Type::Unknown;
+
+  union {
     wchar_t character_ = U'?';
+    Mouse mouse_;
+  };
+  std::string input_;
 };
 
 

src/ftxui/component/event.cpp

@@ -6,11 +6,11 @@
 namespace ftxui {
 
 // static
-Event Event::Character(const std::string& input) {
+Event Event::Character(std::string input) {
   Event event;
-  event.input_ = input;
-  event.is_character_ = true;
   event.character_ = to_wstring(input)[0];
+  event.input_ = std::move(input);
+  event.type_ = Type::Character;
   return event;
 }
 
@@ -23,13 +23,67 @@ Event Event::Character(char c) {
 Event Event::Character(wchar_t c) {
   Event event;
   event.input_ = {(char)c};
-  event.is_character_ = true;
+  event.type_ = Type::Character;
   event.character_ = c;
   return event;
 }
 
 // static
-Event Event::Special(const std::string& input) {
+Event Event::MouseMove(std::string input, int x, int y) {
+  Event event;
+  event.input_ = std::move(input);
+  event.type_ = Type::MouseMove;
+  event.mouse_ = {x, y};
+  return event;
+}
+
+// static
+Event Event::MouseUp(std::string input, int x, int y) {
+  Event event;
+  event.input_ = std::move(input);
+  event.type_ = Type::MouseUp;
+  event.mouse_ = {x, y};
+  return event;
+}
+
+// static
+Event Event::MouseLeftDown(std::string input, int x, int y) {
+  Event event;
+  event.input_ = std::move(input);
+  event.type_ = Type::MouseLeftDown;
+  event.mouse_ = {x, y};
+  return event;
+}
+
+// static
+Event Event::MouseLeftMove(std::string input, int x, int y) {
+  Event event;
+  event.input_ = std::move(input);
+  event.type_ = Type::MouseLeftMove;
+  event.mouse_ = {x, y};
+  return event;
+}
+
+// static
+Event Event::MouseRightDown(std::string input, int x, int y) {
+  Event event;
+  event.input_ = std::move(input);
+  event.type_ = Type::MouseRightDown;
+  event.mouse_ = {x, y};
+  return event;
+}
+
+// static
+Event Event::MouseRightMove(std::string input, int x, int y) {
+  Event event;
+  event.input_ = std::move(input);
+  event.type_ = Type::MouseRightMove;
+  event.mouse_ = {x, y};
+  return event;
+}
+
+// static
+Event Event::Special(std::string input) {
   Event event;
   event.input_ = std::move(input);
   return event;

src/ftxui/component/screen_interactive.cpp

@@ -155,8 +155,8 @@ static const char DISABLE_LINE_WRAP[] = "\x1B[7l";
 static const char USE_ALTERNATIVE_SCREEN[] = "\x1B[?1049h";
 static const char USE_NORMAL_SCREEN[] = "\x1B[?1049l";
 
-static const char ENABLE_MOUSE[] = "\x1B[?1000;1006;1015h";
-static const char DISABLE_MOUSE[] = "\x1B[?1000;10006;1015l";
+static const char ENABLE_MOUSE[] = "\x1B[?1000;1003;1006;1015h";
+static const char DISABLE_MOUSE[] = "\x1B[?1000;1003;10006;1015l";
 
 using SignalHandler = void(int);
 std::stack<std::function<void()>> on_exit_functions;

src/ftxui/component/terminal_input_parser.cpp

@@ -30,28 +30,56 @@ bool TerminalInputParser::Eat() {
   return position_ < (int)pending_.size();
 }
 
-void TerminalInputParser::Send(TerminalInputParser::Type type) {
-  switch (type) {
+void TerminalInputParser::Send(TerminalInputParser::Output output) {
+  switch (output.type) {
     case UNCOMPLETED:
       return;
 
     case DROP:
-      pending_.clear();
-      return;
+      break;
 
     case CHARACTER:
       out_->Send(Event::Character(std::move(pending_)));
-      pending_.clear();
-      return;
+      break;
 
     case SPECIAL:
       out_->Send(Event::Special(std::move(pending_)));
-      pending_.clear();
-      return;
+      break;
+
+    case MOUSE_MOVE:
+      out_->Send(
+          Event::MouseMove(std::move(pending_), output.mouse.x, output.mouse.y));
+      break;
+
+    case MOUSE_UP:
+      out_->Send(
+          Event::MouseUp(std::move(pending_), output.mouse.x, output.mouse.y));
+      break;
+
+    case MOUSE_LEFT_DOWN:
+      out_->Send(Event::MouseLeftDown(std::move(pending_), output.mouse.x,
+                                      output.mouse.y));
+      break;
+
+    case MOUSE_LEFT_MOVE:
+      out_->Send(Event::MouseLeftMove(std::move(pending_), output.mouse.x,
+                                  output.mouse.y));
+      break;
+
+    case MOUSE_RIGHT_DOWN:
+      out_->Send(Event::MouseRightDown(std::move(pending_), output.mouse.x,
+                                      output.mouse.y));
+      break;
+
+    case MOUSE_RIGHT_MOVE:
+      out_->Send(Event::MouseRightMove(std::move(pending_), output.mouse.x,
+                                  output.mouse.y));
+      break;
   }
+  pending_.clear();
 }
 
-TerminalInputParser::Type TerminalInputParser::Parse() {
+TerminalInputParser::Output TerminalInputParser::Parse() {
   if (!Eat())
     return UNCOMPLETED;
 
@@ -75,7 +103,7 @@ TerminalInputParser::Type TerminalInputParser::Parse() {
   return ParseUTF8();
 }
 
-TerminalInputParser::Type TerminalInputParser::ParseUTF8() {
+TerminalInputParser::Output TerminalInputParser::ParseUTF8() {
   unsigned char head = static_cast<unsigned char>(Current());
   for (int i = 0; i < 3; ++i, head <<= 1) {
     if ((head & 0b11000000) != 0b11000000)
@@ -86,7 +114,7 @@ TerminalInputParser::Type TerminalInputParser::ParseUTF8() {
   return CHARACTER;
 }
 
-TerminalInputParser::Type TerminalInputParser::ParseESC() {
+TerminalInputParser::Output TerminalInputParser::ParseESC() {
   if (!Eat())
     return UNCOMPLETED;
   switch (Current()) {
@@ -103,7 +131,7 @@ TerminalInputParser::Type TerminalInputParser::ParseESC() {
   }
 }
 
-TerminalInputParser::Type TerminalInputParser::ParseDCS() {
+TerminalInputParser::Output TerminalInputParser::ParseDCS() {
   // Parse until the string terminator ST.
   while (1) {
     if (!Eat())
@@ -122,19 +150,35 @@ TerminalInputParser::Type TerminalInputParser::ParseDCS() {
   }
 }
 
-TerminalInputParser::Type TerminalInputParser::ParseCSI() {
+TerminalInputParser::Output TerminalInputParser::ParseCSI() {
+  int argument;
+  std::vector<int> arguments;
   while (true) {
     if (!Eat())
       return UNCOMPLETED;
 
-    if (Current() >= '0' && Current() <= '9')
+    if (Current() >= '0' && Current() <= '9') {
+      argument *= 10;
+      argument += int(Current() - '0');
       continue;
+    }
 
-    if (Current() == ';')
+    if (Current() == ';') {
+      arguments.push_back(argument);
+      argument = 0;
       continue;
+    }
 
-    if (Current() >= ' ' && Current() <= '~')
+    if (Current() >= ' ' && Current() <= '~') {
+      arguments.push_back(argument);
+      argument = 0;
+      switch (Current()) {
+        case 'M':
+          return ParseMouse(std::move(arguments));
+        default:
           return SPECIAL;
+      }
+    }
 
     // Invalid ESC in CSI.
     if (Current() == '\x1B')
@@ -142,7 +186,7 @@ TerminalInputParser::Type TerminalInputParser::ParseCSI() {
   }
 }
 
-TerminalInputParser::Type TerminalInputParser::ParseOSC() {
+TerminalInputParser::Output TerminalInputParser::ParseOSC() {
   // Parse until the string terminator ST.
   while (true) {
     if (!Eat())
@@ -156,4 +200,28 @@ TerminalInputParser::Type TerminalInputParser::ParseOSC() {
     return SPECIAL;
   }
 }
+
+TerminalInputParser::Output TerminalInputParser::ParseMouse(
+    std::vector<int> arguments) {
+  if (arguments.size() != 3)
+    return SPECIAL;
+  switch(arguments[0]) {
+    case 32:
+      return Output(MOUSE_LEFT_DOWN, arguments[1], arguments[2]);
+    case 64:
+      return Output(MOUSE_LEFT_MOVE, arguments[1], arguments[2]);
+
+    case 34:
+      return Output(MOUSE_RIGHT_DOWN, arguments[1], arguments[2]);
+    case 66:
+      return Output(MOUSE_RIGHT_MOVE, arguments[1], arguments[2]);
+
+    case 35:
+      return Output(MOUSE_UP, arguments[1], arguments[2]);
+    case 67:
+      return Output(MOUSE_MOVE, arguments[1], arguments[2]);
+  }
+  return SPECIAL;
+}
+
 }  // namespace ftxui

src/ftxui/component/terminal_input_parser.hpp

@@ -20,18 +20,42 @@ class TerminalInputParser {
   bool Eat();
 
   enum Type {
-    UNCOMPLETED = 0,
-    DROP = 1,
-    CHARACTER = 2,
-    SPECIAL = 3,
+    UNCOMPLETED,
+    DROP,
+    CHARACTER,
+    SPECIAL,
+    MOUSE_UP,
+    MOUSE_MOVE,
+    MOUSE_LEFT_DOWN,
+    MOUSE_LEFT_MOVE,
+    MOUSE_RIGHT_DOWN,
+    MOUSE_RIGHT_MOVE,
   };
-  void Send(Type type);
-  Type Parse();
-  Type ParseUTF8();
-  Type ParseESC();
-  Type ParseDCS();
-  Type ParseCSI();
-  Type ParseOSC();
+
+  struct Mouse {
+    int x;
+    int y;
+    Mouse(int x, int y) : x(x), y(y) {}
+  };
+
+  struct Output {
+    Type type;
+    union {
+      Mouse mouse;
+    };
+
+    Output(Type type) : type(type) {}
+    Output(Type type, int x, int y) : type(type), mouse(x, y) {}
+  };
+
+  void Send(Output type);
+  Output Parse();
+  Output ParseUTF8();
+  Output ParseESC();
+  Output ParseDCS();
+  Output ParseCSI();
+  Output ParseOSC();
+  Output ParseMouse(std::vector<int> arguments);
 
   Sender<Event> out_;
   int position_ = -1;