clean up selection rendering

src/editor.rs

@@ -2,7 +2,6 @@ use crossterm::{
 	cursor::{self, MoveTo},
 	event::{self, Event, KeyCode, KeyEvent, KeyModifiers},
 	queue,
-	style::{Color, Colors, ResetColor, SetColors},
 	terminal::{self, Clear, ClearType},
 };
 use std::{
@@ -15,7 +14,7 @@ use std::{
 };
 
 use crate::clipboard::Clipboard;
-use crate::util::read_line;
+use crate::util::{color_highlight, color_reset, read_line};
 
 const TAB_SIZE: usize = 4;
 
@@ -170,36 +169,32 @@ impl Editor {
 		let end = (self.scroll + max_rows).min(self.lines.len());
 		let visible_rows = self.scroll..end;
 
-		let cursor = self.char_index();
-		let marker = self.marker.unwrap_or(0);
-		let selection = (marker.min(cursor))..(marker.max(cursor));
+		let selection = self.selection().unwrap_or_default();
 
 		for (line_index, line) in self.lines[visible_rows].iter().enumerate() {
 			let text = &self.text[line.clone()];
 
 			queue!(stdout(), MoveTo(0, line_index as u16)).unwrap();
 
-			if self.marker.is_none() {
-				print!("{}", text.replace('\t', &" ".repeat(TAB_SIZE)));
-			} else {
-				let mut in_selection = false;
-				for (i, char) in text.char_indices() {
-					let char_i = line.start + i;
-					if char_i >= selection.start && char_i <= selection.end && !in_selection {
-						color_selection();
+			let mut in_selection = false;
+			for (i, char) in text.char_indices() {
+				let char_i = line.start + i;
+				if selection.contains(&char_i) {
+					if !in_selection {
+						color_highlight();
 						in_selection = true;
-					} else if char_i > selection.end && in_selection {
-						color_reset();
-						in_selection = false;
-					}
-					if char == '\t' {
-						print!("{:1$}", " ", TAB_SIZE);
-					} else {
-						print!("{char}");
 					}
+				} else if in_selection {
+					color_reset();
+					in_selection = false;
+				}
+				if char == '\t' {
+					print!("{:1$}", " ", TAB_SIZE);
+				} else {
+					print!("{char}");
 				}
-				color_reset();
 			}
+			color_reset();
 		}
 		self.status_line();
 		queue!(
@@ -208,7 +203,8 @@ impl Editor {
 				self.physical_column() as u16,
 				(self.cursor.line - self.scroll) as u16
 			),
-			cursor::Show
+			cursor::Show,
+			cursor::SetCursorStyle::BlinkingBar
 		)
 		.unwrap();
 		stdout().flush().unwrap();
@@ -459,11 +455,3 @@ impl Editor {
 		}
 	}
 }
-
-fn color_selection() {
-	queue!(stdout(), SetColors(Colors::new(Color::Black, Color::White))).unwrap();
-}
-
-fn color_reset() {
-	queue!(stdout(), ResetColor).unwrap();
-}

src/main.rs

@@ -2,7 +2,6 @@ use crossterm::{
 	cursor::{self, MoveTo},
 	event::{self, Event, KeyCode, KeyModifiers},
 	execute, queue,
-	style::{Color, Colors, ResetColor, SetColors},
 	terminal::{
 		self, disable_raw_mode, enable_raw_mode, Clear, ClearType, EnterAlternateScreen,
 		LeaveAlternateScreen,
@@ -18,6 +17,7 @@ use std::{
 mod clipboard;
 mod editor;
 mod util;
+use crate::util::{color_highlight, color_reset};
 use clipboard::Clipboard;
 use editor::Editor;
 
@@ -97,11 +97,11 @@ impl Navigator {
 
 		for (index, editor) in self.editors.iter().enumerate() {
 			if index == self.selected {
-				queue!(stdout(), SetColors(Colors::new(Color::Black, Color::White))).unwrap();
+				color_highlight();
 			}
 			queue!(stdout(), MoveTo(1, index as u16 + 1)).unwrap();
 			print!("{}", editor.title());
-			queue!(stdout(), ResetColor).unwrap();
+			color_reset();
 		}
 
 		let offset = self.editors.len() as u16 + 2;
@@ -114,7 +114,7 @@ impl Navigator {
 
 		for (index, path) in self.files[visible_rows].iter().enumerate() {
 			if index + self.scroll == self.selected.wrapping_sub(self.editors.len()) {
-				queue!(stdout(), SetColors(Colors::new(Color::Black, Color::White))).unwrap();
+				color_highlight();
 			}
 			queue!(stdout(), MoveTo(1, index as u16 + 1 + offset)).unwrap();
 			if let Some(name) = path.file_name() {
@@ -125,7 +125,7 @@ impl Navigator {
 			if path.is_dir() {
 				print!("/");
 			}
-			queue!(stdout(), ResetColor).unwrap();
+			color_reset();
 		}
 
 		if let Some(text) = &self.message {

src/util.rs

@@ -1,7 +1,9 @@
 use crossterm::{
 	cursor,
 	event::{self, Event, KeyCode},
-	queue, terminal,
+	queue,
+	style::{Color, Colors, ResetColor, SetColors},
+	terminal,
 };
 use std::io::{stdout, Write};
 
@@ -37,3 +39,11 @@ pub fn read_line(prompt: &str) -> Option<String> {
 	}
 	Some(response.trim().into())
 }
+
+pub fn color_highlight() {
+	queue!(stdout(), SetColors(Colors::new(Color::Black, Color::White))).unwrap();
+}
+
+pub fn color_reset() {
+	queue!(stdout(), ResetColor).unwrap();
+}