added modi for linenumbering

src/Editor.cpp

@@ -8,7 +8,7 @@ namespace groove {
 
 	Editor::Editor(std::string filename) : x(0), y(0),
 	 		buffer(std::make_unique<Buffer>()), mode_(Mode::EDIT),
-			filename(filename), offset(0) {
+			filename(filename), offset(0), lineMode(LineMode::NONE) {
 		this->modes.emplace(Mode::INSERT, std::make_unique<modes::Insert>(*this));
 		this->modes.emplace(Mode::EDIT, std::make_unique<modes::Edit>(*this));
 		this->modes.emplace(Mode::QUIT, std::make_unique<modes::Quit>(*this));
@@ -56,11 +56,21 @@ namespace groove {
 
 	void Editor::render() {
 		long linenumber = this->offset;
-		this->vspace = Editor::Digits(this->buffer->linebuffer().size()) + 2;
+		this->vspace = this->lineMode == LineMode::RELATIVE || this->lineMode == LineMode::NUMBERS ?
+					   Editor::Digits(this->buffer->linebuffer().size()) + 2 : 0;
 		clear();
 		for (int i = this->offset; i < LINES - 1 + this->offset; i++) {
-			long ln = static_cast<long>(std::sqrt(std::pow(static_cast<double>(this->y - linenumber), 2)));
+			long ln;
+			switch (this->lineMode) {
+				case LineMode::RELATIVE:
+					ln = static_cast<long>(std::sqrt(std::pow(static_cast<double>(this->y - linenumber), 2)));
 					ln = ln == 0 ? linenumber : ln;
+					break;
+				case LineMode::NUMBERS:
+					ln = linenumber;
+					break;
+			}
+
 			if(i >= this->buffer->linebuffer().size()) {
 				move(i - this->offset, 0);
 				clrtoeol();
@@ -72,6 +82,8 @@ namespace groove {
 				long x = this->vspace;
 				long found = -1;
 				long len = -1;
+
+				if (this->lineMode != LineMode::NONE) {
 					std::string label = std::string(x - Editor::Digits(ln) - 1, ' ');
 					label += std::to_string(ln) + ' ';
 					if (linenumber != this->y)
@@ -79,6 +91,8 @@ namespace groove {
 					mvprintw(i - offset, 0, label.c_str());
 					if (linenumber != this->y)
 						attroff(A_REVERSE);
+				}
+
 				for (auto& car : line) {
 					if (hilist.find(x - this->vspace) != hilist.end()) {
 						found = x - this->vspace;

src/Editor.hpp

@@ -18,6 +18,13 @@ namespace groove {
 		QUIT
 	};
 
+	enum LineMode {
+		NUMBERS,
+		RELATIVE,
+		NONE,
+		COUNT
+	};
+
 	class Editor {
 		friend class modes::Mode;
 		friend class modes::Insert;
@@ -29,6 +36,7 @@ namespace groove {
 		int offset;
 		long vspace;
 		char lastChar = 0;
+		LineMode lineMode;
 		std::unique_ptr<Buffer> buffer;
 		Mode mode_;
 		std::string clipboard = "";

src/modes/Edit.cpp

@@ -36,6 +36,19 @@ namespace groove {
 				case 'd':
 					this->editor.buffer->remove(this->editor.y);
 					break;
+				case 'l':
+					switch (this->editor.lineMode) {
+						case LineMode::NUMBERS:
+							this->editor.lineMode = LineMode::RELATIVE;
+							break;
+						case LineMode::RELATIVE:
+							this->editor.lineMode = LineMode::NONE;
+							break;
+						case LineMode::NONE:
+							this->editor.lineMode = LineMode::NUMBERS;
+							break;
+					}
+					break;
 			}
 		}
 	}