Remove hash_layout method from Widget trait

native/src/widget/button.rs

@@ -8,12 +8,10 @@ use crate::overlay;
 use crate::renderer;
 use crate::touch;
 use crate::{
-    Background, Clipboard, Color, Element, Hasher, Layout, Length, Padding,
-    Point, Rectangle, Shell, Vector, Widget,
+    Background, Clipboard, Color, Element, Layout, Length, Padding, Point,
+    Rectangle, Shell, Vector, Widget,
 };
 
-use std::hash::Hash;
-
 pub use iced_style::button::{Style, StyleSheet};
 
 /// A generic widget that produces a message when pressed.
@@ -333,14 +331,6 @@ where
         );
     }
 
-    fn hash_layout(&self, state: &mut Hasher) {
-        struct Marker;
-        std::any::TypeId::of::<Marker>().hash(state);
-
-        self.width.hash(state);
-        self.content.hash_layout(state);
-    }
-
     fn overlay(
         &mut self,
         layout: Layout<'_>,

native/src/widget/checkbox.rs

@@ -1,6 +1,4 @@
 //! Show toggle controls using checkboxes.
-use std::hash::Hash;
-
 use crate::alignment;
 use crate::event::{self, Event};
 use crate::layout;
@@ -10,8 +8,8 @@ use crate::text;
 use crate::touch;
 use crate::widget::{self, Row, Text};
 use crate::{
-    Alignment, Clipboard, Element, Hasher, Layout, Length, Point, Rectangle,
-    Shell, Widget,
+    Alignment, Clipboard, Element, Layout, Length, Point, Rectangle, Shell,
+    Widget,
 };
 
 pub use iced_style::checkbox::{Style, StyleSheet};
@@ -262,13 +260,6 @@ where
             );
         }
     }
-
-    fn hash_layout(&self, state: &mut Hasher) {
-        struct Marker;
-        std::any::TypeId::of::<Marker>().hash(state);
-
-        self.label.hash(state);
-    }
 }
 
 impl<'a, Message, Renderer> From<Checkbox<'a, Message, Renderer>>

native/src/widget/column.rs

@@ -1,14 +1,12 @@
 //! Distribute content vertically.
-use std::hash::Hash;
-
 use crate::event::{self, Event};
 use crate::layout;
 use crate::mouse;
 use crate::overlay;
 use crate::renderer;
 use crate::{
-    Alignment, Clipboard, Element, Hasher, Layout, Length, Padding, Point,
-    Rectangle, Shell, Widget,
+    Alignment, Clipboard, Element, Layout, Length, Padding, Point, Rectangle,
+    Shell, Widget,
 };
 
 use std::u32;
@@ -199,23 +197,6 @@ where
         }
     }
 
-    fn hash_layout(&self, state: &mut Hasher) {
-        struct Marker;
-        std::any::TypeId::of::<Marker>().hash(state);
-
-        self.width.hash(state);
-        self.height.hash(state);
-        self.max_width.hash(state);
-        self.max_height.hash(state);
-        self.align_items.hash(state);
-        self.spacing.hash(state);
-        self.padding.hash(state);
-
-        for child in &self.children {
-            child.widget.hash_layout(state);
-        }
-    }
-
     fn overlay(
         &mut self,
         layout: Layout<'_>,

native/src/widget/container.rs

@@ -1,6 +1,4 @@
 //! Decorate content and apply alignment.
-use std::hash::Hash;
-
 use crate::alignment::{self, Alignment};
 use crate::event::{self, Event};
 use crate::layout;
@@ -8,8 +6,8 @@ use crate::mouse;
 use crate::overlay;
 use crate::renderer;
 use crate::{
-    Background, Clipboard, Color, Element, Hasher, Layout, Length, Padding,
-    Point, Rectangle, Shell, Widget,
+    Background, Clipboard, Color, Element, Layout, Length, Padding, Point,
+    Rectangle, Shell, Widget,
 };
 
 use std::u32;
@@ -219,21 +217,6 @@ where
         );
     }
 
-    fn hash_layout(&self, state: &mut Hasher) {
-        struct Marker;
-        std::any::TypeId::of::<Marker>().hash(state);
-
-        self.padding.hash(state);
-        self.width.hash(state);
-        self.height.hash(state);
-        self.max_width.hash(state);
-        self.max_height.hash(state);
-        self.horizontal_alignment.hash(state);
-        self.vertical_alignment.hash(state);
-
-        self.content.hash_layout(state);
-    }
-
     fn overlay(
         &mut self,
         layout: Layout<'_>,

native/src/widget/image.rs

@@ -6,8 +6,7 @@ use crate::image;
 use crate::layout;
 use crate::renderer;
 use crate::{
-    ContentFit, Element, Hasher, Layout, Length, Point, Rectangle, Size,
-    Vector, Widget,
+    ContentFit, Element, Layout, Length, Point, Rectangle, Size, Vector, Widget,
 };
 
 use std::hash::Hash;
@@ -149,16 +148,6 @@ where
             render(renderer)
         }
     }
-
-    fn hash_layout(&self, state: &mut Hasher) {
-        struct Marker;
-        std::any::TypeId::of::<Marker>().hash(state);
-
-        self.handle.hash(state);
-        self.width.hash(state);
-        self.height.hash(state);
-        self.content_fit.hash(state);
-    }
 }
 
 impl<'a, Message, Renderer, Handle> From<Image<Handle>>

native/src/widget/image/viewer.rs

@@ -5,8 +5,8 @@ use crate::layout;
 use crate::mouse;
 use crate::renderer;
 use crate::{
-    Clipboard, Element, Hasher, Layout, Length, Point, Rectangle, Shell, Size,
-    Vector, Widget,
+    Clipboard, Element, Layout, Length, Point, Rectangle, Shell, Size, Vector,
+    Widget,
 };
 
 use std::hash::Hash;
@@ -335,17 +335,6 @@ where
             });
         });
     }
-
-    fn hash_layout(&self, state: &mut Hasher) {
-        struct Marker;
-        std::any::TypeId::of::<Marker>().hash(state);
-
-        self.width.hash(state);
-        self.height.hash(state);
-        self.padding.hash(state);
-
-        self.handle.hash(state);
-    }
 }
 
 /// The local state of a [`Viewer`].

native/src/widget/pane_grid.rs

@@ -34,8 +34,8 @@ use crate::overlay;
 use crate::renderer;
 use crate::touch;
 use crate::{
-    Clipboard, Color, Element, Hasher, Layout, Length, Point, Rectangle, Shell,
-    Size, Vector, Widget,
+    Clipboard, Color, Element, Layout, Length, Point, Rectangle, Shell, Size,
+    Vector, Widget,
 };
 
 pub use iced_style::pane_grid::{Line, StyleSheet};
@@ -666,21 +666,6 @@ where
         }
     }
 
-    fn hash_layout(&self, state: &mut Hasher) {
-        use std::hash::Hash;
-
-        struct Marker;
-        std::any::TypeId::of::<Marker>().hash(state);
-
-        self.width.hash(state);
-        self.height.hash(state);
-        self.state.hash_layout(state);
-
-        for (_, element) in &self.elements {
-            element.hash_layout(state);
-        }
-    }
-
     fn overlay(
         &mut self,
         layout: Layout<'_>,

native/src/widget/pane_grid/content.rs

@@ -5,9 +5,7 @@ use crate::overlay;
 use crate::renderer;
 use crate::widget::container;
 use crate::widget::pane_grid::TitleBar;
-use crate::{
-    Clipboard, Element, Hasher, Layout, Point, Rectangle, Shell, Size,
-};
+use crate::{Clipboard, Element, Layout, Point, Rectangle, Shell, Size};
 
 /// The content of a [`Pane`].
 ///
@@ -236,14 +234,6 @@ where
             .max(title_bar_interaction)
     }
 
-    pub(crate) fn hash_layout(&self, state: &mut Hasher) {
-        if let Some(title_bar) = &self.title_bar {
-            title_bar.hash_layout(state);
-        }
-
-        self.body.hash_layout(state);
-    }
-
     pub(crate) fn overlay(
         &mut self,
         layout: Layout<'_>,

native/src/widget/pane_grid/state.rs

@@ -1,7 +1,7 @@
 use crate::widget::pane_grid::{
     Axis, Configuration, Direction, Node, Pane, Split,
 };
-use crate::{Hasher, Point, Rectangle, Size};
+use crate::{Point, Rectangle, Size};
 
 use std::collections::{BTreeMap, HashMap};
 
@@ -292,10 +292,4 @@ impl Internal {
     pub fn idle(&mut self) {
         self.action = Action::Idle;
     }
-
-    pub fn hash_layout(&self, hasher: &mut Hasher) {
-        use std::hash::Hash;
-
-        self.layout.hash(hasher);
-    }
 }

native/src/widget/pane_grid/title_bar.rs

@@ -5,7 +5,7 @@ use crate::overlay;
 use crate::renderer;
 use crate::widget::container;
 use crate::{
-    Clipboard, Element, Hasher, Layout, Padding, Point, Rectangle, Shell, Size,
+    Clipboard, Element, Layout, Padding, Point, Rectangle, Shell, Size,
 };
 
 /// The title bar of a [`Pane`].
@@ -157,17 +157,6 @@ where
         }
     }
 
-    pub(crate) fn hash_layout(&self, hasher: &mut Hasher) {
-        use std::hash::Hash;
-
-        self.content.hash_layout(hasher);
-        self.padding.hash(hasher);
-
-        if let Some(controls) = &self.controls {
-            controls.hash_layout(hasher);
-        }
-    }
-
     pub(crate) fn layout(
         &self,
         renderer: &Renderer,

native/src/widget/pick_list.rs

@@ -10,8 +10,8 @@ use crate::renderer;
 use crate::text::{self, Text};
 use crate::touch;
 use crate::{
-    Clipboard, Element, Hasher, Layout, Length, Padding, Point, Rectangle,
-    Shell, Size, Widget,
+    Clipboard, Element, Layout, Length, Padding, Point, Rectangle, Shell, Size,
+    Widget,
 };
 use std::borrow::Cow;
 
@@ -220,24 +220,6 @@ where
         layout::Node::new(size)
     }
 
-    fn hash_layout(&self, state: &mut Hasher) {
-        use std::hash::Hash as _;
-
-        match self.width {
-            Length::Shrink => {
-                self.placeholder.hash(state);
-
-                self.options
-                    .iter()
-                    .map(ToString::to_string)
-                    .for_each(|label| label.hash(state));
-            }
-            _ => {
-                self.width.hash(state);
-            }
-        }
-    }
-
     fn on_event(
         &mut self,
         event: Event,

native/src/widget/progress_bar.rs

@@ -1,11 +1,9 @@
 //! Provide progress feedback to your users.
 use crate::layout;
 use crate::renderer;
-use crate::{
-    Color, Element, Hasher, Layout, Length, Point, Rectangle, Size, Widget,
-};
+use crate::{Color, Element, Layout, Length, Point, Rectangle, Size, Widget};
 
-use std::{hash::Hash, ops::RangeInclusive};
+use std::ops::RangeInclusive;
 
 pub use iced_style::progress_bar::{Style, StyleSheet};
 
@@ -141,14 +139,6 @@ where
             );
         }
     }
-
-    fn hash_layout(&self, state: &mut Hasher) {
-        struct Marker;
-        std::any::TypeId::of::<Marker>().hash(state);
-
-        self.width.hash(state);
-        self.height.hash(state);
-    }
 }
 
 impl<'a, Message, Renderer> From<ProgressBar<'a>>

native/src/widget/radio.rs

@@ -1,6 +1,4 @@
 //! Create choices using radio buttons.
-use std::hash::Hash;
-
 use crate::alignment;
 use crate::event::{self, Event};
 use crate::layout;
@@ -10,8 +8,8 @@ use crate::text;
 use crate::touch;
 use crate::widget::{self, Row, Text};
 use crate::{
-    Alignment, Clipboard, Color, Element, Hasher, Layout, Length, Point,
-    Rectangle, Shell, Widget,
+    Alignment, Clipboard, Color, Element, Layout, Length, Point, Rectangle,
+    Shell, Widget,
 };
 
 pub use iced_style::radio::{Style, StyleSheet};
@@ -280,13 +278,6 @@ where
             );
         }
     }
-
-    fn hash_layout(&self, state: &mut Hasher) {
-        struct Marker;
-        std::any::TypeId::of::<Marker>().hash(state);
-
-        self.label.hash(state);
-    }
 }
 
 impl<'a, Message, Renderer> From<Radio<'a, Message, Renderer>>

native/src/widget/row.rs

@@ -5,11 +5,10 @@ use crate::mouse;
 use crate::overlay;
 use crate::renderer;
 use crate::{
-    Alignment, Clipboard, Element, Hasher, Layout, Length, Padding, Point,
-    Rectangle, Shell, Widget,
+    Alignment, Clipboard, Element, Layout, Length, Padding, Point, Rectangle,
+    Shell, Widget,
 };
 
-use std::hash::Hash;
 use std::u32;
 
 /// A container that distributes its contents horizontally.
@@ -198,23 +197,6 @@ where
         }
     }
 
-    fn hash_layout(&self, state: &mut Hasher) {
-        struct Marker;
-        std::any::TypeId::of::<Marker>().hash(state);
-
-        self.width.hash(state);
-        self.height.hash(state);
-        self.max_width.hash(state);
-        self.max_height.hash(state);
-        self.align_items.hash(state);
-        self.spacing.hash(state);
-        self.padding.hash(state);
-
-        for child in &self.children {
-            child.widget.hash_layout(state);
-        }
-    }
-
     fn overlay(
         &mut self,
         layout: Layout<'_>,

native/src/widget/rule.rs

@@ -1,11 +1,7 @@
 //! Display a horizontal or vertical rule for dividing content.
 use crate::layout;
 use crate::renderer;
-use crate::{
-    Color, Element, Hasher, Layout, Length, Point, Rectangle, Size, Widget,
-};
-
-use std::hash::Hash;
+use crate::{Color, Element, Layout, Length, Point, Rectangle, Size, Widget};
 
 pub use iced_style::rule::{FillMode, Style, StyleSheet};
 
@@ -122,14 +118,6 @@ where
             style.color,
         );
     }
-
-    fn hash_layout(&self, state: &mut Hasher) {
-        struct Marker;
-        std::any::TypeId::of::<Marker>().hash(state);
-
-        self.width.hash(state);
-        self.height.hash(state);
-    }
 }
 
 impl<'a, Message, Renderer> From<Rule<'a>> for Element<'a, Message, Renderer>

native/src/widget/scrollable.rs

@@ -7,11 +7,11 @@ use crate::renderer;
 use crate::touch;
 use crate::widget::Column;
 use crate::{
-    Alignment, Background, Clipboard, Color, Element, Hasher, Layout, Length,
-    Padding, Point, Rectangle, Shell, Size, Vector, Widget,
+    Alignment, Background, Clipboard, Color, Element, Layout, Length, Padding,
+    Point, Rectangle, Shell, Size, Vector, Widget,
 };
 
-use std::{f32, hash::Hash, u32};
+use std::{f32, u32};
 
 pub use iced_style::scrollable::StyleSheet;
 
@@ -570,16 +570,6 @@ where
         }
     }
 
-    fn hash_layout(&self, state: &mut Hasher) {
-        struct Marker;
-        std::any::TypeId::of::<Marker>().hash(state);
-
-        self.height.hash(state);
-        self.max_height.hash(state);
-
-        self.content.hash_layout(state)
-    }
-
     fn overlay(
         &mut self,
         layout: Layout<'_>,

native/src/widget/slider.rs

@@ -7,11 +7,10 @@ use crate::mouse;
 use crate::renderer;
 use crate::touch;
 use crate::{
-    Background, Clipboard, Color, Element, Hasher, Layout, Length, Point,
-    Rectangle, Shell, Size, Widget,
+    Background, Clipboard, Color, Element, Layout, Length, Point, Rectangle,
+    Shell, Size, Widget,
 };
 
-use std::hash::Hash;
 use std::ops::RangeInclusive;
 
 pub use iced_style::slider::{Handle, HandleShape, Style, StyleSheet};
@@ -374,13 +373,6 @@ where
             mouse::Interaction::default()
         }
     }
-
-    fn hash_layout(&self, state: &mut Hasher) {
-        struct Marker;
-        std::any::TypeId::of::<Marker>().hash(state);
-
-        self.width.hash(state);
-    }
 }
 
 impl<'a, T, Message, Renderer> From<Slider<'a, T, Message>>

native/src/widget/space.rs

@@ -1,9 +1,7 @@
 //! Distribute content vertically.
 use crate::layout;
 use crate::renderer;
-use crate::{Element, Hasher, Layout, Length, Point, Rectangle, Size, Widget};
-
-use std::hash::Hash;
+use crate::{Element, Layout, Length, Point, Rectangle, Size, Widget};
 
 /// An amount of empty space.
 ///
@@ -68,13 +66,6 @@ where
         _viewport: &Rectangle,
     ) {
     }
-
-    fn hash_layout(&self, state: &mut Hasher) {
-        std::any::TypeId::of::<Space>().hash(state);
-
-        self.width.hash(state);
-        self.height.hash(state);
-    }
 }
 
 impl<'a, Message, Renderer> From<Space> for Element<'a, Message, Renderer>

native/src/widget/svg.rs

@@ -3,11 +3,9 @@ use crate::layout;
 use crate::renderer;
 use crate::svg::{self, Handle};
 use crate::{
-    ContentFit, Element, Hasher, Layout, Length, Point, Rectangle, Size,
-    Vector, Widget,
+    ContentFit, Element, Layout, Length, Point, Rectangle, Size, Vector, Widget,
 };
 
-use std::hash::Hash;
 use std::path::PathBuf;
 
 /// A vector graphics image.
@@ -146,15 +144,6 @@ where
             render(renderer)
         }
     }
-
-    fn hash_layout(&self, state: &mut Hasher) {
-        std::any::TypeId::of::<Svg>().hash(state);
-
-        self.handle.hash(state);
-        self.width.hash(state);
-        self.height.hash(state);
-        self.content_fit.hash(state);
-    }
 }
 
 impl<'a, Message, Renderer> From<Svg> for Element<'a, Message, Renderer>

native/src/widget/text.rs

@@ -3,11 +3,7 @@ use crate::alignment;
 use crate::layout;
 use crate::renderer;
 use crate::text;
-use crate::{
-    Color, Element, Hasher, Layout, Length, Point, Rectangle, Size, Widget,
-};
-
-use std::hash::Hash;
+use crate::{Color, Element, Layout, Length, Point, Rectangle, Size, Widget};
 
 /// A paragraph of text.
 ///
@@ -151,16 +147,6 @@ where
             self.vertical_alignment,
         );
     }
-
-    fn hash_layout(&self, state: &mut Hasher) {
-        struct Marker;
-        std::any::TypeId::of::<Marker>().hash(state);
-
-        self.content.hash(state);
-        self.size.hash(state);
-        self.width.hash(state);
-        self.height.hash(state);
-    }
 }
 
 /// Draws text using the same logic as the [`Text`] widget.

native/src/widget/text_input.rs

@@ -20,8 +20,8 @@ use crate::renderer;
 use crate::text::{self, Text};
 use crate::touch;
 use crate::{
-    Clipboard, Color, Element, Hasher, Layout, Length, Padding, Point,
-    Rectangle, Shell, Size, Vector, Widget,
+    Clipboard, Color, Element, Layout, Length, Padding, Point, Rectangle,
+    Shell, Size, Vector, Widget,
 };
 
 use std::u32;
@@ -783,17 +783,6 @@ where
     ) {
         self.draw(renderer, layout, cursor_position, None)
     }
-
-    fn hash_layout(&self, state: &mut Hasher) {
-        use std::{any::TypeId, hash::Hash};
-        struct Marker;
-        TypeId::of::<Marker>().hash(state);
-
-        self.width.hash(state);
-        self.max_width.hash(state);
-        self.padding.hash(state);
-        self.size.hash(state);
-    }
 }
 
 impl<'a, Message, Renderer> From<TextInput<'a, Message, Renderer>>

native/src/widget/toggler.rs

@@ -1,5 +1,4 @@
 //! Show toggle controls using togglers.
-use std::hash::Hash;
 
 use crate::alignment;
 use crate::event;
@@ -9,8 +8,8 @@ use crate::renderer;
 use crate::text;
 use crate::widget::{Row, Text};
 use crate::{
-    Alignment, Clipboard, Element, Event, Hasher, Layout, Length, Point,
-    Rectangle, Shell, Widget,
+    Alignment, Clipboard, Element, Event, Layout, Length, Point, Rectangle,
+    Shell, Widget,
 };
 
 pub use iced_style::toggler::{Style, StyleSheet};
@@ -295,13 +294,6 @@ where
             style.foreground,
         );
     }
-
-    fn hash_layout(&self, state: &mut Hasher) {
-        struct Marker;
-        std::any::TypeId::of::<Marker>().hash(state);
-
-        self.label.hash(state)
-    }
 }
 
 impl<'a, Message, Renderer> From<Toggler<'a, Message, Renderer>>

native/src/widget/tooltip.rs

@@ -1,8 +1,4 @@
 //! Display a widget over another.
-use std::hash::Hash;
-
-use iced_core::Rectangle;
-
 use crate::event;
 use crate::layout;
 use crate::mouse;
@@ -11,8 +7,8 @@ use crate::text;
 use crate::widget::container;
 use crate::widget::text::Text;
 use crate::{
-    Clipboard, Element, Event, Hasher, Layout, Length, Padding, Point, Shell,
-    Size, Vector, Widget,
+    Clipboard, Element, Event, Layout, Length, Padding, Point, Rectangle,
+    Shell, Size, Vector, Widget,
 };
 
 /// An element to display a widget over another.
@@ -268,13 +264,6 @@ where
             });
         }
     }
-
-    fn hash_layout(&self, state: &mut Hasher) {
-        struct Marker;
-        std::any::TypeId::of::<Marker>().hash(state);
-
-        self.content.hash_layout(state);
-    }
 }
 
 impl<'a, Message, Renderer> From<Tooltip<'a, Message, Renderer>>