Add Magpie cursor input (closes #23)

apps/magpie/src/service/window.rs

@@ -2,10 +2,10 @@ use std::collections::HashMap;
 use std::path::PathBuf;
 use std::time::Instant;
 
-use canary::{Panel, Runtime, Vec2};
+use canary::{CursorEventKind, Panel, Runtime, Vec2, PX_PER_MM};
 use glium::backend::glutin::DisplayCreationError;
 use glium::{glutin, Surface};
-use glutin::event::{Event, WindowEvent};
+use glutin::event::{ElementState, Event, MouseButton, WindowEvent};
 use glutin::event_loop::{ControlFlow, EventLoop, EventLoopProxy, EventLoopWindowTarget};
 use glutin::window::WindowId;
 
@@ -26,6 +26,7 @@ pub struct Window {
     pub graphics: Graphics,
     pub panel: Panel,
     pub last_update: Instant,
+    pub cursor_pos: Vec2,
 }
 
 impl Window {
@@ -42,6 +43,7 @@ impl Window {
             graphics,
             panel,
             last_update,
+            cursor_pos: Vec2::ZERO,
         })
     }
 
@@ -75,9 +77,26 @@ impl Window {
     pub fn on_event(&mut self, event: WindowEvent) {
         match event {
             WindowEvent::Resized(size) => {
-                self.resize(Vec2::new(size.width as f32, size.height as f32) * canary::PX_PER_MM);
+                self.resize(Vec2::new(size.width as f32, size.height as f32) * PX_PER_MM);
                 self.request_redraw()
             }
+            WindowEvent::CursorMoved { position, .. } => {
+                let x = position.x as f32 * PX_PER_MM;
+                let y = position.y as f32 * PX_PER_MM;
+                self.cursor_pos = Vec2::new(x, y);
+            }
+            WindowEvent::MouseInput {
+                state,
+                button: MouseButton::Left,
+                ..
+            } => {
+                let event = match state {
+                    ElementState::Pressed => CursorEventKind::Select,
+                    ElementState::Released => CursorEventKind::Deselect,
+                };
+
+                self.panel.on_cursor_event(event, self.cursor_pos);
+            }
             _ => {}
         }
     }