remove modules and have single event manager (atomics feature parity + preparation for local state)

src/default/attr.rs

@@ -1,21 +1,29 @@
-use crate::prelude::*;
+use crate::{default::UiState, prelude::*};
 use std::time::{Duration, Instant};
 use winit::dpi::{LogicalPosition, LogicalSize};
 
+event_ctx!(UiState);
+
 pub struct Selector;
 
-impl<W: 'static + Widget> WidgetAttr<W> for Selector {
+impl<W: Widget + 'static> WidgetAttr<W> for Selector {
     type Input = WidgetRef<TextEdit>;
 
     fn run(ui: &mut Ui, container: WidgetRef<W>, id: Self::Input) {
-        ui.register_event(&container, CursorSense::click_or_drag(), move |mut ctx| {
-            let ui = ctx.ui;
-            let region = ui.window_region(&id).unwrap();
+        ui.register_event(container, CursorSense::click_or_drag(), move |ctx| {
+            let region = ctx.ui.window_region(&id).unwrap();
             let id_pos = region.top_left;
-            let container_pos = ui.window_region(&container).unwrap().top_left;
-            ctx.data.cursor += container_pos - id_pos;
-            ctx.data.size = region.size();
-            select(ui, id, ctx.state, ctx.data);
+            let container_pos = ctx.ui.window_region(&container).unwrap().top_left;
+            let pos = ctx.data.pos + container_pos - id_pos;
+            let size = region.size();
+            select(
+                ctx.ui,
+                id,
+                ctx.state,
+                pos,
+                size,
+                ctx.data.sense.is_dragging(),
+            );
         });
     }
 }
@@ -26,18 +34,31 @@ impl WidgetAttr<TextEdit> for Selectable {
     type Input = ();
 
     fn run(ui: &mut Ui, id: WidgetRef<TextEdit>, _: Self::Input) {
-        ui.register_event(&id, CursorSense::click_or_drag(), move |ctx| {
-            select(ctx.ui, id, ctx.state, ctx.data);
+        ui.register_event(id, CursorSense::click_or_drag(), move |ctx| {
+            select(
+                ctx.ui,
+                id,
+                ctx.state,
+                ctx.data.pos,
+                ctx.data.size,
+                ctx.data.sense.is_dragging(),
+            );
         });
     }
 }
 
-fn select(ui: &mut Ui, id: WidgetRef<TextEdit>, state: &mut UiState, data: CursorData) {
+fn select(
+    ui: &mut Ui,
+    id: WidgetRef<TextEdit>,
+    state: &mut UiState,
+    pos: Vec2,
+    size: Vec2,
+    dragging: bool,
+) {
     let now = Instant::now();
     let recent = (now - state.last_click) < Duration::from_millis(300);
     state.last_click = now;
-    id.edit(ui)
-        .select(data.cursor, data.size, data.sense.is_dragging(), recent);
+    id.edit(ui).select(pos, size, dragging, recent);
     if let Some(region) = ui.window_region(&id) {
         state.window.set_ime_allowed(true);
         state.window.set_ime_cursor_area(

src/default/event.rs

@@ -1,9 +1,9 @@
-use iris_core::DefaultEvent;
+use iris_core::Event;
 
 #[derive(Eq, PartialEq, Hash, Clone)]
 pub struct Submit;
-impl DefaultEvent for Submit {}
+impl Event for Submit {}
 
 #[derive(Eq, PartialEq, Hash, Clone)]
 pub struct Edited;
-impl DefaultEvent for Edited {}
+impl Event for Edited {}

src/default/mod.rs

@@ -11,12 +11,14 @@ mod attr;
 mod event;
 mod input;
 mod render;
+mod sense;
 
 pub use app::*;
 pub use attr::*;
 pub use event::*;
 pub use input::*;
 pub use render::*;
+pub use sense::*;
 
 pub type Proxy<Event> = EventLoopProxy<Event>;
 pub type DefaultApp<Data> = App<DefaultState<Data>>;
@@ -131,13 +133,13 @@ impl<State: DefaultAppState> AppState for DefaultState<State> {
                             ui_state.window.set_ime_allowed(false);
                         }
                         TextInputResult::Submit => {
-                            ui.run_event(app_state, sel, Submit, ());
+                            ui.run_event::<Submit, _>(app_state, sel, &mut ());
                         }
                         TextInputResult::Paste => {
                             if let Ok(t) = ui_state.clipboard.get_text() {
                                 text.insert(&t);
                             }
-                            ui.run_event(app_state, sel, Edited, ());
+                            ui.run_event::<Edited, _>(app_state, sel, &mut ());
                         }
                         TextInputResult::Copy(text) => {
                             if let Err(err) = ui_state.clipboard.set_text(text) {
@@ -145,7 +147,7 @@ impl<State: DefaultAppState> AppState for DefaultState<State> {
                             }
                         }
                         TextInputResult::Used => {
-                            ui.run_event(app_state, sel, Edited, ());
+                            ui.run_event::<Edited, _>(app_state, sel, &mut ());
                         }
                         TextInputResult::Unused => {}
                     }

src/default/sense.rs

@@ -0,0 +1,294 @@
+use crate::prelude::*;
+use std::{
+    ops::{BitOr, Deref, DerefMut},
+    rc::Rc,
+};
+
+#[derive(Clone, Copy, PartialEq)]
+pub enum CursorButton {
+    Left,
+    Right,
+    Middle,
+}
+
+#[derive(Clone, Copy, PartialEq)]
+pub enum CursorSense {
+    PressStart(CursorButton),
+    Pressing(CursorButton),
+    PressEnd(CursorButton),
+    HoverStart,
+    Hovering,
+    HoverEnd,
+    Scroll,
+}
+
+#[derive(Clone)]
+pub struct CursorSenses(Vec<CursorSense>);
+
+impl Event for CursorSenses {
+    type Data<'a> = CursorData<'a>;
+    type State = SensorState;
+    fn should_run(&self, data: &mut Self::Data<'_>) -> bool {
+        if let Some(sense) = should_run(self, data.cursor, data.hover) {
+            data.sense = sense;
+            true
+        } else {
+            false
+        }
+    }
+}
+
+impl CursorSense {
+    pub fn click() -> Self {
+        Self::PressStart(CursorButton::Left)
+    }
+    pub fn click_or_drag() -> CursorSenses {
+        Self::click() | Self::Pressing(CursorButton::Left)
+    }
+    pub fn unclick() -> Self {
+        Self::PressEnd(CursorButton::Left)
+    }
+    pub fn is_dragging(&self) -> bool {
+        matches!(self, CursorSense::Pressing(CursorButton::Left))
+    }
+}
+
+#[derive(Default, Clone)]
+pub struct CursorState {
+    pub pos: Vec2,
+    pub exists: bool,
+    pub buttons: CursorButtons,
+    pub scroll_delta: Vec2,
+}
+
+#[derive(Default, Clone)]
+pub struct CursorButtons {
+    pub left: ActivationState,
+    pub middle: ActivationState,
+    pub right: ActivationState,
+}
+
+impl CursorButtons {
+    pub fn select(&self, button: &CursorButton) -> &ActivationState {
+        match button {
+            CursorButton::Left => &self.left,
+            CursorButton::Right => &self.right,
+            CursorButton::Middle => &self.middle,
+        }
+    }
+
+    pub fn end_frame(&mut self) {
+        self.left.end_frame();
+        self.middle.end_frame();
+        self.right.end_frame();
+    }
+
+    pub fn iter(&self) -> impl Iterator<Item = (CursorButton, &ActivationState)> {
+        [
+            CursorButton::Left,
+            CursorButton::Middle,
+            CursorButton::Right,
+        ]
+        .into_iter()
+        .map(|b| (b, self.select(&b)))
+    }
+}
+
+impl CursorState {
+    pub fn end_frame(&mut self) {
+        self.buttons.end_frame();
+        self.scroll_delta = Vec2::ZERO;
+    }
+}
+
+#[derive(Debug, Clone, Copy, Default, PartialEq)]
+pub enum ActivationState {
+    Start,
+    On,
+    End,
+    #[default]
+    Off,
+}
+
+/// this and other similar stuff has a generic
+/// because I kind of want to make CursorModule generic
+/// or basically have some way to have custom senses
+/// that depend on active widget positions
+/// but I'm not sure how or if worth it
+pub struct Sensor<Ctx, Data> {
+    pub senses: CursorSenses,
+    pub f: Rc<dyn EventFn<Ctx, Data>>,
+}
+
+pub type SenseShape = UiRegion;
+
+#[derive(Default, Debug)]
+pub struct SensorState {
+    pub hover: ActivationState,
+}
+
+pub struct CursorData<'a> {
+    /// where this widget was hit
+    pub pos: Vec2,
+    pub size: Vec2,
+    pub scroll_delta: Vec2,
+    pub hover: ActivationState,
+    pub cursor: &'a CursorState,
+    /// the first sense that triggered this
+    pub sense: CursorSense,
+}
+
+pub trait SensorUi {
+    fn run_sensors<Ctx: 'static>(&mut self, ctx: &mut Ctx, cursor: &CursorState, window_size: Vec2);
+}
+
+impl SensorUi for Ui {
+    fn run_sensors<Ctx: 'static>(
+        &mut self,
+        ctx: &mut Ctx,
+        cursor: &CursorState,
+        window_size: Vec2,
+    ) {
+        let layers = std::mem::take(&mut self.data.layers);
+        let mut active =
+            std::mem::take(&mut self.data.events.get_type::<CursorSense, Ctx>().active);
+        for layer in layers.indices().rev() {
+            let mut sensed = false;
+            for (id, state) in active.get_mut(&layer).into_iter().flatten() {
+                let shape = self.data.active.get(id).unwrap().region;
+                let region = shape.to_px(window_size);
+                let in_shape = cursor.exists && region.contains(cursor.pos);
+                state.hover.update(in_shape);
+                if state.hover == ActivationState::Off {
+                    continue;
+                }
+                sensed = true;
+
+                let mut data = CursorData {
+                    pos: cursor.pos - region.top_left,
+                    size: region.bot_right - region.top_left,
+                    scroll_delta: cursor.scroll_delta,
+                    hover: state.hover,
+                    cursor,
+                    // this does not have any meaning;
+                    // might wanna set up Event to have a prepare stage
+                    sense: CursorSense::Hovering,
+                };
+                self.run_event::<CursorSense, Ctx>(ctx, *id, &mut data);
+            }
+            if sensed {
+                break;
+            }
+        }
+        self.data.events.get_type::<CursorSense, Ctx>().active = active;
+        self.data.layers = layers;
+    }
+}
+
+pub fn should_run(
+    senses: &CursorSenses,
+    cursor: &CursorState,
+    hover: ActivationState,
+) -> Option<CursorSense> {
+    for sense in senses.iter() {
+        if match sense {
+            CursorSense::PressStart(button) => cursor.buttons.select(button).is_start(),
+            CursorSense::Pressing(button) => cursor.buttons.select(button).is_on(),
+            CursorSense::PressEnd(button) => cursor.buttons.select(button).is_end(),
+            CursorSense::HoverStart => hover.is_start(),
+            CursorSense::Hovering => hover.is_on(),
+            CursorSense::HoverEnd => hover.is_end(),
+            CursorSense::Scroll => cursor.scroll_delta != Vec2::ZERO,
+        } {
+            return Some(*sense);
+        }
+    }
+    None
+}
+
+impl ActivationState {
+    pub fn is_start(&self) -> bool {
+        *self == Self::Start
+    }
+    pub fn is_on(&self) -> bool {
+        *self == Self::Start || *self == Self::On
+    }
+    pub fn is_end(&self) -> bool {
+        *self == Self::End
+    }
+    pub fn is_off(&self) -> bool {
+        *self == Self::End || *self == Self::Off
+    }
+    pub fn update(&mut self, on: bool) {
+        *self = match *self {
+            Self::Start => match on {
+                true => Self::On,
+                false => Self::End,
+            },
+            Self::On => match on {
+                true => Self::On,
+                false => Self::End,
+            },
+            Self::End => match on {
+                true => Self::Start,
+                false => Self::Off,
+            },
+            Self::Off => match on {
+                true => Self::Start,
+                false => Self::Off,
+            },
+        }
+    }
+
+    pub fn end_frame(&mut self) {
+        match self {
+            Self::Start => *self = Self::On,
+            Self::End => *self = Self::Off,
+            _ => (),
+        }
+    }
+}
+
+impl EventLike for CursorSense {
+    type Event = CursorSenses;
+    fn into_event(self) -> Self::Event {
+        self.into()
+    }
+}
+
+impl Deref for CursorSenses {
+    type Target = Vec<CursorSense>;
+
+    fn deref(&self) -> &Self::Target {
+        &self.0
+    }
+}
+
+impl DerefMut for CursorSenses {
+    fn deref_mut(&mut self) -> &mut Self::Target {
+        &mut self.0
+    }
+}
+
+impl From<CursorSense> for CursorSenses {
+    fn from(val: CursorSense) -> Self {
+        CursorSenses(vec![val])
+    }
+}
+
+impl BitOr for CursorSense {
+    type Output = CursorSenses;
+
+    fn bitor(self, rhs: Self) -> Self::Output {
+        CursorSenses(vec![self, rhs])
+    }
+}
+
+impl BitOr<CursorSense> for CursorSenses {
+    type Output = Self;
+
+    fn bitor(mut self, rhs: CursorSense) -> Self::Output {
+        self.0.push(rhs);
+        self
+    }
+}