added pageup/down support; tried help screen, not working yet, though

src/Editor.cpp

@@ -14,6 +14,10 @@ namespace groove {
 		this->modes.emplace(Mode::EDIT, std::make_unique<modes::Edit>(*this));
 		this->modes.emplace(Mode::QUIT, std::make_unique<modes::Quit>(*this));
 		this->modes.emplace(Mode::SAVE, std::make_unique<modes::Save>(*this));
+
+		this->overlay = newwin(LINES * 0.9, COLS * 0.9, (LINES * 0.1f) / 2.0f, (COLS * 0.1f) / 2.0f);
+		box(this->overlay, 0, 0);
+
 		if (!this->load()) {
 			std::cerr << "Could not open file: '" << this->filename << "', creating it on save.\n";
 			this->buffer->insert("");
@@ -126,6 +130,8 @@ namespace groove {
 		}
 		this->status();
 		move(static_cast<int>(this->y - this->offset), static_cast<int>(this->x + this->vspace));
+		this->renderOverlay();
+
 	}
 
 	void Editor::status() {

src/Editor.hpp

@@ -40,6 +40,7 @@ namespace groove {
 		long vspace;
 		bool inComment;
 		char lastChar = 0;
+		WINDOW* overlay;
 		History history;
 		LineMode lineMode;
 		std::unique_ptr<Buffer> buffer;
@@ -126,11 +127,20 @@ namespace groove {
 					return false;
 			}
 		}
+		void renderOverlay() {
+			wbkgd(this->overlay, COLOR_PAIR(ncurses::Colors::STATUSBAR));
+			mvwaddstr(this->overlay, 3, 3, "Hallo win");
+			refresh();
+			wrefresh(this->overlay);
+		}
 	public:
 		Editor(std::string file = "ubenannt");
 		Mode mode() {
 			return this->mode_;
 		}
+		~Editor() {
+			delete this->overlay;
+		}
 		void input(int c);
 		void render();
 		static long Digits(long number);

src/modes/Edit.cpp

@@ -1,5 +1,6 @@
 #include <modes/Edit.hpp>
 #include <Editor.hpp>
+#include <ncurses.h>
 
 namespace groove {
 	namespace modes {
@@ -104,6 +105,16 @@ namespace groove {
 					this->editor.y = this->editor.buffer->size() - 1;
 					this->editor.offset = this->editor.buffer->size() - LINES + 1;
 					break;
+				case KEY_NPAGE:
+					for (int i = 0; i < LINES; i++) {
+						this->editor.down();
+					}
+					break;
+				case KEY_PPAGE:
+					for (int i = 0; i < LINES; i++) {
+						this->editor.up();
+					}
+					break;
 			}
 		}
 	}

src/ncurses/ncurses.hpp

@@ -30,8 +30,11 @@ namespace groove {
 		};
 
 		class ncurses {
+		private:
+			WINDOW* overlay;
 		public:
-			ncurses() {};
+			ncurses() {
+			};
 			void init() {
 				setlocale(LC_ALL, "");
 				initscr();                      // Start ncurses mode