Implement basic cursor availability

3 files changed, 13 insertions, 83 deletions

diff --git a/widget/src/canvas.rs b/widget/src/canvas.rs
index 171c4534..96062038 100644
--- a/widget/src/canvas.rs
+++ b/widget/src/canvas.rs
@@ -1,10 +1,8 @@
 //! Draw 2D graphics for your users.
 pub mod event;
 
-mod cursor;
 mod program;
 
-pub use cursor::Cursor;
 pub use event::Event;
 pub use program::Program;
 
@@ -17,7 +15,7 @@ use crate::core::mouse;
 use crate::core::renderer;
 use crate::core::widget::tree::{self, Tree};
 use crate::core::{Clipboard, Element, Shell, Widget};
-use crate::core::{Length, Point, Rectangle, Size, Vector};
+use crate::core::{Length, Rectangle, Size, Vector};
 use crate::graphics::geometry;
 
 use std::marker::PhantomData;
@@ -28,8 +26,9 @@ use std::marker::PhantomData;
 /// If you want to get a quick overview, here's how we can draw a simple circle:
 ///
 /// ```no_run
-/// # use iced_widget::canvas::{self, Canvas, Cursor, Fill, Frame, Geometry, Path, Program};
+/// # use iced_widget::canvas::{self, Canvas, Fill, Frame, Geometry, Path, Program};
 /// # use iced_widget::core::{Color, Rectangle};
+/// # use iced_widget::core::mouse;
 /// # use iced_widget::style::Theme;
 /// #
 /// # pub type Renderer = iced_widget::renderer::Renderer<Theme>;
@@ -43,7 +42,7 @@ use std::marker::PhantomData;
 /// impl Program<()> for Circle {
 ///     type State = ();
 ///
-///     fn draw(&self, _state: &(), renderer: &Renderer, _theme: &Theme, bounds: Rectangle, _cursor: Cursor) -> Vec<Geometry>{
+///     fn draw(&self, _state: &(), renderer: &Renderer, _theme: &Theme, bounds: Rectangle, _cursor: mouse::Cursor) -> Vec<Geometry>{
 ///         // We prepare a new `Frame`
 ///         let mut frame = Frame::new(renderer, bounds.size());
 ///
@@ -144,7 +143,7 @@ where
         tree: &mut Tree,
         event: core::Event,
         layout: Layout<'_>,
-        cursor_position: Point,
+        cursor: mouse::Cursor,
         _renderer: &Renderer,
         _clipboard: &mut dyn Clipboard,
         shell: &mut Shell<'_, Message>,
@@ -160,8 +159,6 @@ where
             _ => None,
         };
 
-        let cursor = Cursor::from_window_position(cursor_position);
-
         if let Some(canvas_event) = canvas_event {
             let state = tree.state.downcast_mut::<P::State>();
 
@@ -182,12 +179,11 @@ where
         &self,
         tree: &Tree,
         layout: Layout<'_>,
-        cursor_position: Point,
+        cursor: mouse::Cursor,
         _viewport: &Rectangle,
         _renderer: &Renderer,
     ) -> mouse::Interaction {
         let bounds = layout.bounds();
-        let cursor = Cursor::from_window_position(cursor_position);
         let state = tree.state.downcast_ref::<P::State>();
 
         self.program.mouse_interaction(state, bounds, cursor)
@@ -200,7 +196,7 @@ where
         theme: &Renderer::Theme,
         _style: &renderer::Style,
         layout: Layout<'_>,
-        cursor_position: Point,
+        cursor: mouse::Cursor,
         _viewport: &Rectangle,
     ) {
         let bounds = layout.bounds();
@@ -209,7 +205,6 @@ where
             return;
         }
 
-        let cursor = Cursor::from_window_position(cursor_position);
         let state = tree.state.downcast_ref::<P::State>();
 
         renderer.with_translation(
diff --git a/widget/src/canvas/cursor.rs b/widget/src/canvas/cursor.rs
deleted file mode 100644
index 5a65e9a7..00000000
--- a/widget/src/canvas/cursor.rs
+++ /dev/null
@@ -1,64 +0,0 @@
-use crate::core::{Point, Rectangle};
-
-/// The mouse cursor state.
-#[derive(Debug, Clone, Copy, PartialEq)]
-pub enum Cursor {
-    /// The cursor has a defined position.
-    Available(Point),
-
-    /// The cursor is currently unavailable (i.e. out of bounds or busy).
-    Unavailable,
-}
-
-impl Cursor {
-    // TODO: Remove this once this type is used in `iced_native` to encode
-    // proper cursor availability
-    pub(crate) fn from_window_position(position: Point) -> Self {
-        if position.x < 0.0 || position.y < 0.0 {
-            Cursor::Unavailable
-        } else {
-            Cursor::Available(position)
-        }
-    }
-
-    /// Returns the absolute position of the [`Cursor`], if available.
-    pub fn position(&self) -> Option<Point> {
-        match self {
-            Cursor::Available(position) => Some(*position),
-            Cursor::Unavailable => None,
-        }
-    }
-
-    /// Returns the relative position of the [`Cursor`] inside the given bounds,
-    /// if available.
-    ///
-    /// If the [`Cursor`] is not over the provided bounds, this method will
-    /// return `None`.
-    pub fn position_in(&self, bounds: &Rectangle) -> Option<Point> {
-        if self.is_over(bounds) {
-            self.position_from(bounds.position())
-        } else {
-            None
-        }
-    }
-
-    /// Returns the relative position of the [`Cursor`] from the given origin,
-    /// if available.
-    pub fn position_from(&self, origin: Point) -> Option<Point> {
-        match self {
-            Cursor::Available(position) => {
-                Some(Point::new(position.x - origin.x, position.y - origin.y))
-            }
-            Cursor::Unavailable => None,
-        }
-    }
-
-    /// Returns whether the [`Cursor`] is currently over the provided bounds
-    /// or not.
-    pub fn is_over(&self, bounds: &Rectangle) -> bool {
-        match self {
-            Cursor::Available(position) => bounds.contains(*position),
-            Cursor::Unavailable => false,
-        }
-    }
-}
diff --git a/widget/src/canvas/program.rs b/widget/src/canvas/program.rs
index ad0fbb83..929ee285 100644
--- a/widget/src/canvas/program.rs
+++ b/widget/src/canvas/program.rs
@@ -1,6 +1,5 @@
 use crate::canvas::event::{self, Event};
 use crate::canvas::mouse;
-use crate::canvas::Cursor;
 use crate::core::Rectangle;
 use crate::graphics::geometry::{self, Geometry};
 
@@ -33,7 +32,7 @@ where
         _state: &mut Self::State,
         _event: Event,
         _bounds: Rectangle,
-        _cursor: Cursor,
+        _cursor: mouse::Cursor,
     ) -> (event::Status, Option<Message>) {
         (event::Status::Ignored, None)
     }
@@ -51,7 +50,7 @@ where
         renderer: &Renderer,
         theme: &Renderer::Theme,
         bounds: Rectangle,
-        cursor: Cursor,
+        cursor: mouse::Cursor,
     ) -> Vec<Geometry>;
 
     /// Returns the current mouse interaction of the [`Program`].
@@ -64,7 +63,7 @@ where
         &self,
         _state: &Self::State,
         _bounds: Rectangle,
-        _cursor: Cursor,
+        _cursor: mouse::Cursor,
     ) -> mouse::Interaction {
         mouse::Interaction::default()
     }
@@ -82,7 +81,7 @@ where
         state: &mut Self::State,
         event: Event,
         bounds: Rectangle,
-        cursor: Cursor,
+        cursor: mouse::Cursor,
     ) -> (event::Status, Option<Message>) {
         T::update(self, state, event, bounds, cursor)
     }
@@ -93,7 +92,7 @@ where
         renderer: &Renderer,
         theme: &Renderer::Theme,
         bounds: Rectangle,
-        cursor: Cursor,
+        cursor: mouse::Cursor,
     ) -> Vec<Geometry> {
         T::draw(self, state, renderer, theme, bounds, cursor)
     }
@@ -102,7 +101,7 @@ where
         &self,
         state: &Self::State,
         bounds: Rectangle,
-        cursor: Cursor,
+        cursor: mouse::Cursor,
     ) -> mouse::Interaction {
         T::mouse_interaction(self, state, bounds, cursor)
     }