Restructure the entire editor codebase to consistently match the message hierarchy

Closes #744

editor/src/test_utils.rs

@@ -0,0 +1,93 @@
+use crate::application::Editor;
+use crate::messages::input_mapper::utility_types::input_keyboard::ModifierKeys;
+use crate::messages::input_mapper::utility_types::input_mouse::{EditorMouseState, MouseKeys, ScrollDelta, ViewportPosition};
+use crate::messages::prelude::*;
+use crate::messages::tool::utility_types::ToolType;
+
+use graphene::color::Color;
+
+/// A set of utility functions to make the writing of editor test more declarative
+pub trait EditorTestUtils {
+	fn new_document(&mut self);
+
+	fn draw_rect(&mut self, x1: f64, y1: f64, x2: f64, y2: f64);
+	fn draw_shape(&mut self, x1: f64, y1: f64, x2: f64, y2: f64);
+	fn draw_ellipse(&mut self, x1: f64, y1: f64, x2: f64, y2: f64);
+
+	/// Select given tool and drag it from (x1, y1) to (x2, y2)
+	fn drag_tool(&mut self, typ: ToolType, x1: f64, y1: f64, x2: f64, y2: f64);
+	fn move_mouse(&mut self, x: f64, y: f64);
+	fn mousedown(&mut self, state: EditorMouseState);
+	fn mouseup(&mut self, state: EditorMouseState);
+	fn lmb_mousedown(&mut self, x: f64, y: f64);
+	fn input(&mut self, message: InputPreprocessorMessage);
+	fn select_tool(&mut self, typ: ToolType);
+	fn select_primary_color(&mut self, color: Color);
+}
+
+impl EditorTestUtils for Editor {
+	fn new_document(&mut self) {
+		self.handle_message(Message::Portfolio(PortfolioMessage::NewDocumentWithName { name: String::from("Test document") }));
+	}
+
+	fn draw_rect(&mut self, x1: f64, y1: f64, x2: f64, y2: f64) {
+		self.drag_tool(ToolType::Rectangle, x1, y1, x2, y2);
+	}
+
+	fn draw_shape(&mut self, x1: f64, y1: f64, x2: f64, y2: f64) {
+		self.drag_tool(ToolType::Shape, x1, y1, x2, y2);
+	}
+
+	fn draw_ellipse(&mut self, x1: f64, y1: f64, x2: f64, y2: f64) {
+		self.drag_tool(ToolType::Ellipse, x1, y1, x2, y2);
+	}
+
+	fn drag_tool(&mut self, typ: ToolType, x1: f64, y1: f64, x2: f64, y2: f64) {
+		self.select_tool(typ);
+		self.move_mouse(x1, y1);
+		self.lmb_mousedown(x1, y1);
+		self.move_mouse(x2, y2);
+		self.mouseup(EditorMouseState {
+			editor_position: (x2, y2).into(),
+			mouse_keys: MouseKeys::empty(),
+			scroll_delta: ScrollDelta::default(),
+		});
+	}
+
+	fn move_mouse(&mut self, x: f64, y: f64) {
+		let mut editor_mouse_state = EditorMouseState::new();
+		editor_mouse_state.editor_position = ViewportPosition::new(x, y);
+		let modifier_keys = ModifierKeys::default();
+		self.input(InputPreprocessorMessage::PointerMove { editor_mouse_state, modifier_keys });
+	}
+
+	fn mousedown(&mut self, editor_mouse_state: EditorMouseState) {
+		let modifier_keys = ModifierKeys::default();
+		self.input(InputPreprocessorMessage::PointerDown { editor_mouse_state, modifier_keys });
+	}
+
+	fn mouseup(&mut self, editor_mouse_state: EditorMouseState) {
+		let modifier_keys = ModifierKeys::default();
+		self.handle_message(InputPreprocessorMessage::PointerUp { editor_mouse_state, modifier_keys });
+	}
+
+	fn lmb_mousedown(&mut self, x: f64, y: f64) {
+		self.mousedown(EditorMouseState {
+			editor_position: (x, y).into(),
+			mouse_keys: MouseKeys::LEFT,
+			scroll_delta: ScrollDelta::default(),
+		});
+	}
+
+	fn input(&mut self, message: InputPreprocessorMessage) {
+		self.handle_message(Message::InputPreprocessor(message));
+	}
+
+	fn select_tool(&mut self, tool_type: ToolType) {
+		self.handle_message(Message::Tool(ToolMessage::ActivateTool { tool_type }));
+	}
+
+	fn select_primary_color(&mut self, color: Color) {
+		self.handle_message(Message::Tool(ToolMessage::SelectPrimaryColor { color }));
+	}
+}