Draft basic styling for TextInput

native/src/renderer/null.rs

@@ -97,6 +97,8 @@ impl scrollable::Renderer for Null {
 }
 
 impl text_input::Renderer for Null {
+    type Style = ();
+
     fn default_size(&self) -> u16 {
         20
     }
@@ -124,6 +126,7 @@ impl text_input::Renderer for Null {
         _placeholder: &str,
         _value: &text_input::Value,
         _state: &text_input::State,
+        _style: &Self::Style,
     ) -> Self::Output {
     }
 }

native/src/widget/container.rs

@@ -94,7 +94,7 @@ where
         self
     }
 
-    /// Sets the style the [`Container`].
+    /// Sets the style of the [`Container`].
     ///
     /// [`Container`]: struct.Container.html
     pub fn style(mut self, style: impl Into<Renderer::Style>) -> Self {

native/src/widget/text_input.rs

@@ -15,8 +15,9 @@ use unicode_segmentation::UnicodeSegmentation;
 ///
 /// # Example
 /// ```
-/// # use iced_native::{text_input, TextInput};
+/// # use iced_native::{text_input, renderer::Null};
 /// #
+/// # pub type TextInput<'a, Message> = iced_native::TextInput<'a, Message, Null>;
 /// #[derive(Debug, Clone)]
 /// enum Message {
 ///     TextInputChanged(String),
@@ -35,7 +36,7 @@ use unicode_segmentation::UnicodeSegmentation;
 /// ```
 /// ![Text input drawn by `iced_wgpu`](https://github.com/hecrj/iced/blob/7760618fb112074bc40b148944521f312152012a/docs/images/text_input.png?raw=true)
 #[allow(missing_debug_implementations)]
-pub struct TextInput<'a, Message> {
+pub struct TextInput<'a, Message, Renderer: self::Renderer> {
     state: &'a mut State,
     placeholder: String,
     value: Value,
@@ -46,9 +47,10 @@ pub struct TextInput<'a, Message> {
     size: Option<u16>,
     on_change: Box<dyn Fn(String) -> Message>,
     on_submit: Option<Message>,
+    style: Renderer::Style,
 }
 
-impl<'a, Message> TextInput<'a, Message> {
+impl<'a, Message, Renderer: self::Renderer> TextInput<'a, Message, Renderer> {
     /// Creates a new [`TextInput`].
     ///
     /// It expects:
@@ -79,6 +81,7 @@ impl<'a, Message> TextInput<'a, Message> {
             size: None,
             on_change: Box::new(on_change),
             on_submit: None,
+            style: Renderer::Style::default(),
         }
     }
 
@@ -130,11 +133,20 @@ impl<'a, Message> TextInput<'a, Message> {
         self.on_submit = Some(message);
         self
     }
+
+    /// Sets the style of the [`TextInput`].
+    ///
+    /// [`TextInput`]: struct.TextInput.html
+    pub fn style(mut self, style: impl Into<Renderer::Style>) -> Self {
+        self.style = style.into();
+        self
+    }
 }
 
-impl<'a, Message, Renderer> Widget<Message, Renderer> for TextInput<'a, Message>
+impl<'a, Message, Renderer> Widget<Message, Renderer>
+    for TextInput<'a, Message, Renderer>
 where
-    Renderer: self::Renderer,
+    Renderer: 'static + self::Renderer,
     Message: Clone + std::fmt::Debug,
 {
     fn width(&self) -> Length {
@@ -359,6 +371,7 @@ where
                 &self.placeholder,
                 &self.value.secure(),
                 &self.state,
+                &self.style,
             )
         } else {
             renderer.draw(
@@ -369,6 +382,7 @@ where
                 &self.placeholder,
                 &self.value,
                 &self.state,
+                &self.style,
             )
         }
     }
@@ -376,7 +390,7 @@ where
     fn hash_layout(&self, state: &mut Hasher) {
         use std::{any::TypeId, hash::Hash};
 
-        TypeId::of::<TextInput<'static, ()>>().hash(state);
+        TypeId::of::<TextInput<'static, (), Renderer>>().hash(state);
 
         self.width.hash(state);
         self.max_width.hash(state);
@@ -393,6 +407,8 @@ where
 /// [`TextInput`]: struct.TextInput.html
 /// [renderer]: ../../renderer/index.html
 pub trait Renderer: crate::Renderer + Sized {
+    type Style: Default;
+
     /// Returns the default size of the text of the [`TextInput`].
     ///
     /// [`TextInput`]: struct.TextInput.html
@@ -441,17 +457,18 @@ pub trait Renderer: crate::Renderer + Sized {
         placeholder: &str,
         value: &Value,
         state: &State,
+        style: &Self::Style,
     ) -> Self::Output;
 }
 
-impl<'a, Message, Renderer> From<TextInput<'a, Message>>
+impl<'a, Message, Renderer> From<TextInput<'a, Message, Renderer>>
     for Element<'a, Message, Renderer>
 where
     Renderer: 'static + self::Renderer,
     Message: 'static + Clone + std::fmt::Debug,
 {
     fn from(
-        text_input: TextInput<'a, Message>,
+        text_input: TextInput<'a, Message, Renderer>,
     ) -> Element<'a, Message, Renderer> {
         Element::new(text_input)
     }

src/native.rs

@@ -38,16 +38,6 @@ pub mod widget {
         pub use iced_winit::scrollable::State;
     }
 
-    pub mod text_input {
-        //! Ask for information using text fields.
-        //!
-        //! A [`TextInput`] has some local [`State`].
-        //!
-        //! [`TextInput`]: struct.TextInput.html
-        //! [`State`]: struct.State.html
-        pub use iced_winit::text_input::{State, TextInput};
-    }
-
     pub mod slider {
         //! Display an interactive selector of a single value from a range of
         //! values.

style/src/container.rs

@@ -12,6 +12,12 @@ pub struct Style {
 /// A set of rules that dictate the style of a container.
 pub trait StyleSheet {
     /// Produces the style of a container.
+    fn style(&self) -> Style;
+}
+
+struct Default;
+
+impl StyleSheet for Default {
     fn style(&self) -> Style {
         Style {
             text_color: None,
@@ -21,10 +27,6 @@ pub trait StyleSheet {
     }
 }
 
-struct Default;
-
-impl StyleSheet for Default {}
-
 impl std::default::Default for Box<dyn StyleSheet> {
     fn default() -> Self {
         Box::new(Default)

style/src/lib.rs

@@ -1,2 +1,3 @@
 pub mod button;
 pub mod container;
+pub mod text_input;

style/src/text_input.rs

@@ -0,0 +1,72 @@
+//! Display fields that can be filled with text.
+use iced_core::{Background, Color};
+
+/// The appearance of a text input.
+#[derive(Debug, Clone, Copy)]
+pub struct Style {
+    pub background: Background,
+    pub border_radius: u16,
+    pub border_width: u16,
+    pub border_color: Color,
+}
+
+/// A set of rules that dictate the style of a text input.
+pub trait StyleSheet {
+    /// Produces the style of an active text input.
+    fn active(&self) -> Style;
+
+    /// Produces the style of a focused text input.
+    fn focused(&self) -> Style;
+
+    /// Produces the style of an hovered text input.
+    fn hovered(&self) -> Style {
+        self.focused()
+    }
+
+    fn placeholder_color(&self) -> Color;
+
+    fn value_color(&self) -> Color;
+}
+
+struct Default;
+
+impl StyleSheet for Default {
+    fn active(&self) -> Style {
+        Style {
+            background: Background::Color(Color::WHITE),
+            border_radius: 5,
+            border_width: 1,
+            border_color: Color::from_rgb(0.7, 0.7, 0.7),
+        }
+    }
+
+    fn focused(&self) -> Style {
+        Style {
+            border_color: Color::from_rgb(0.5, 0.5, 0.5),
+            ..self.active()
+        }
+    }
+
+    fn placeholder_color(&self) -> Color {
+        Color::from_rgb(0.7, 0.7, 0.7)
+    }
+
+    fn value_color(&self) -> Color {
+        Color::from_rgb(0.3, 0.3, 0.3)
+    }
+}
+
+impl std::default::Default for Box<dyn StyleSheet> {
+    fn default() -> Self {
+        Box::new(Default)
+    }
+}
+
+impl<T> From<T> for Box<dyn StyleSheet>
+where
+    T: 'static + StyleSheet,
+{
+    fn from(style: T) -> Self {
+        Box::new(style)
+    }
+}

wgpu/src/renderer/widget/text_input.rs

@@ -1,4 +1,4 @@
-use crate::{Primitive, Renderer};
+use crate::{text_input::StyleSheet, Primitive, Renderer};
 
 use iced_native::{
     text_input, Background, Color, Font, HorizontalAlignment, MouseCursor,
@@ -7,6 +7,8 @@ use iced_native::{
 use std::f32;
 
 impl text_input::Renderer for Renderer {
+    type Style = Box<dyn StyleSheet>;
+
     fn default_size(&self) -> u16 {
         // TODO: Make this configurable
         20
@@ -61,20 +63,24 @@ impl text_input::Renderer for Renderer {
         placeholder: &str,
         value: &text_input::Value,
         state: &text_input::State,
+        style_sheet: &Self::Style,
     ) -> Self::Output {
         let is_mouse_over = bounds.contains(cursor_position);
 
+        let style = if state.is_focused() {
+            style_sheet.focused()
+        } else if is_mouse_over {
+            style_sheet.hovered()
+        } else {
+            style_sheet.active()
+        };
+
         let input = Primitive::Quad {
             bounds,
-            background: Background::Color(Color::WHITE),
-            border_radius: 5,
-            border_width: 1,
-            border_color: if is_mouse_over || state.is_focused() {
-                [0.5, 0.5, 0.5]
-            } else {
-                [0.7, 0.7, 0.7]
-            }
-            .into(),
+            background: style.background,
+            border_radius: style.border_radius,
+            border_width: style.border_width,
+            border_color: style.border_color,
         };
 
         let text = value.to_string();
@@ -86,9 +92,9 @@ impl text_input::Renderer for Renderer {
                 text.clone()
             },
             color: if text.is_empty() {
-                [0.7, 0.7, 0.7]
+                style_sheet.placeholder_color()
             } else {
-                [0.3, 0.3, 0.3]
+                style_sheet.value_color()
             }
             .into(),
             font: Font::Default,
@@ -117,7 +123,7 @@ impl text_input::Renderer for Renderer {
                     width: 1.0,
                     height: text_bounds.height,
                 },
-                background: Background::Color(Color::BLACK),
+                background: Background::Color(style_sheet.value_color()),
                 border_radius: 0,
                 border_width: 0,
                 border_color: Color::TRANSPARENT,

wgpu/src/widget.rs

@@ -1,2 +1,3 @@
 pub mod button;
 pub mod container;
+pub mod text_input;

wgpu/src/widget/text_input.rs

@@ -0,0 +1,15 @@
+//! Display fields that can be filled with text.
+//!
+//! A [`TextInput`] has some local [`State`].
+//!
+//! [`TextInput`]: struct.TextInput.html
+//! [`State`]: struct.State.html
+use crate::Renderer;
+
+pub use iced_native::text_input::State;
+pub use iced_style::text_input::{Style, StyleSheet};
+
+/// A field that can be filled with text.
+///
+/// This is an alias of an `iced_native` text input with an `iced_wgpu::Renderer`.
+pub type TextInput<'a, Message> = iced_native::TextInput<'a, Message, Renderer>;