hover effect, layout hands and ponds

src/tui/input/mouse.rs

@@ -0,0 +1,65 @@
+use bevy::prelude::*;
+use bevy_ratatui::{RatatuiContext, event::MouseMessage};
+use ratatui::{crossterm::event::MouseEvent, layout::Position};
+
+use crate::tui::render::Hovered;
+
+#[derive(Component)]
+pub(crate) struct PickRegion {
+    pub(crate) area: ratatui::prelude::Rect,
+}
+
+// enum PickEvent {
+//     Click { col: u16, row: u16 },
+//     Hover { col: u16, row: u16 },
+// }
+
+pub(crate) fn input_system(
+    mut commands: Commands,
+    mut messages: MessageReader<MouseMessage>,
+    context: Res<RatatuiContext>,
+    entities: Query<(Entity, &PickRegion)>,
+    hovered: Query<(Entity, &PickRegion), With<Hovered>>,
+) -> Result {
+    for message in messages.read() {
+        let event = message.0;
+        // let term_size = context.size().unwrap();
+        let position = Position::new(event.column, event.row);
+        match event.kind {
+            ratatui::crossterm::event::MouseEventKind::Down(mouse_button) => match mouse_button {
+                ratatui::crossterm::event::MouseButton::Left => {
+                    for (entity, region) in &entities {}
+                }
+                // ratatui::crossterm::event::MouseButton::Right => todo!(),
+                // ratatui::crossterm::event::MouseButton::Middle => todo!(),
+                _ => {}
+            },
+            // ratatui::crossterm::event::MouseEventKind::Up(mouse_button) => todo!(),
+            // ratatui::crossterm::event::MouseEventKind::Drag(mouse_button) => todo!(),
+            ratatui::crossterm::event::MouseEventKind::Moved => {
+                for (entity, region) in &hovered {
+                    if !region.area.contains(position) {
+                        commands.get_entity(entity)?.remove::<Hovered>();
+                    }
+                }
+                for (entity, region) in &entities {
+                    // debug!(
+                    //     "{:?}, {position:?}",
+                    //     region.area.positions().collect::<Vec<_>>()
+                    // );
+                    if region.area.contains(position) {
+                        commands.get_entity(entity)?.insert(Hovered);
+                        // trace!("{entity:?} hovered!")
+                    }
+                }
+            }
+            // ratatui::crossterm::event::MouseEventKind::ScrollDown => todo!(),
+            // ratatui::crossterm::event::MouseEventKind::ScrollUp => todo!(),
+            // ratatui::crossterm::event::MouseEventKind::ScrollLeft => todo!(),
+            // ratatui::crossterm::event::MouseEventKind::ScrollRight => todo!(),
+            _ => {}
+        }
+    }
+
+    Ok(())
+}