Record mouse movement (#51)

* Record mouse movement

* Use get for last_point and first_point

* Use first and las for first_point and last_point

* Remove unnecessary comment

* Derive Default for Trace

Co-authored-by: RustyNixieTube <RustyNixieTube@users.noreply.github.com>

core/editor/src/dispatcher/events.rs

@@ -16,8 +16,26 @@ pub enum Response {
 	UpdateCanvas,
 }
 
-#[derive(Debug, Clone)]
+#[derive(Debug, Clone, Default)]
 pub struct Trace(Vec<MouseState>);
+
+impl Trace {
+	pub fn new() -> Self {
+		Self::default()
+	}
+	pub fn first_point(&self) -> Option<&MouseState> {
+		self.0.first()
+	}
+	pub fn last_point(&self) -> Option<&MouseState> {
+		self.0.last()
+	}
+	pub fn append_point(&mut self, x: u32, y: u32) {
+		self.0.push(MouseState::from_pos(x, y))
+	}
+	pub fn clear(&mut self) {
+		self.0.clear()
+	}
+}
 #[derive(Debug, Clone, Default)]
 pub struct MouseState {
 	x: u32,

core/editor/src/tools/mod.rs

@@ -1,7 +1,9 @@
-use crate::Color;
+use crate::{events::Trace, Color};
 use std::collections::HashMap;
 
 pub struct ToolState {
+	pub mouse_is_clicked: bool,
+	pub trace: Trace,
 	pub primary_color: Color,
 	pub secondary_color: Color,
 	pub active_tool: ToolType,
@@ -11,6 +13,8 @@ pub struct ToolState {
 impl ToolState {
 	pub fn new() -> Self {
 		ToolState {
+			mouse_is_clicked: false,
+			trace: Trace::new(),
 			primary_color: Color::BLACK,
 			secondary_color: Color::WHITE,
 			active_tool: ToolType::Select,