change(widget): make height adjustable at widget level

addtionally rename Progressbar to ProgressBar

examples/progress_bar.rs

@@ -1,8 +1,8 @@
 use iced::{
-    settings::Window, slider, Background, Color, Column, Element, Sandbox,
-    Settings, Slider,
+    settings::Window, slider, Background, Color, Column, Element, Length,
+    Sandbox, Settings, Slider,
 };
-use iced_winit::Progressbar;
+use iced_winit::ProgressBar;
 
 pub fn main() {
     Progress::run(Settings {
@@ -17,7 +17,7 @@ pub fn main() {
 #[derive(Default)]
 struct Progress {
     value: f32,
-    progressbar_slider: slider::State,
+    progress_bar_slider: slider::State,
 }
 
 #[derive(Debug, Clone, Copy)]
@@ -46,14 +46,15 @@ impl Sandbox for Progress {
         Column::new()
             .padding(20)
             .push(
-                Progressbar::new(0.0..=100.0, self.value)
+                ProgressBar::new(0.0..=100.0, self.value)
                     .background(Background::Color(Color::from_rgb(
                         0.6, 0.6, 0.6,
                     )))
-                    .active_color(Color::from_rgb(0.0, 0.95, 0.0)),
+                    .active_color(Color::from_rgb(0.0, 0.95, 0.0))
+                    .height(Length::Units(30)),
             )
             .push(Slider::new(
-                &mut self.progressbar_slider,
+                &mut self.progress_bar_slider,
                 0.0..=100.0,
                 self.value,
                 Message::SliderChanged,

native/src/widget.rs

@@ -25,7 +25,7 @@ pub mod checkbox;
 pub mod column;
 pub mod container;
 pub mod image;
-pub mod progressbar;
+pub mod progress_bar;
 pub mod radio;
 pub mod row;
 pub mod scrollable;
@@ -46,7 +46,7 @@ pub use container::Container;
 #[doc(no_inline)]
 pub use image::Image;
 #[doc(no_inline)]
-pub use progressbar::Progressbar;
+pub use progress_bar::ProgressBar;
 #[doc(no_inline)]
 pub use radio::Radio;
 #[doc(no_inline)]

native/src/widget/progress_bar.rs

@@ -1,7 +1,7 @@
-//! Display a progressbar
+//! Display a ProgressBar
 //!
 //!
-//! [`Progressbar`]: struct.Progressbar.html
+//! [`ProgressBar`]: struct.ProgressBar.html
 use crate::{
     layout, Background, Color, Element, Hasher, Layout, Length, Point,
     Rectangle, Size, Widget,
@@ -9,71 +9,83 @@ use crate::{
 
 use std::{hash::Hash, ops::RangeInclusive};
 
-/// A progressbar
+const DEFAULT_HEIGHT: Length = Length::Units(30);
+
+/// A ProgressBar
 ///
 /// # Example
 ///
 /// ```
-/// # use iced_native::Progressbar;
-/// 
+/// # use iced_native::ProgressBar;
+///
 /// let value = 50.0;
-/// Progressbar::new(0.0..=100.0, value);
+/// ProgressBar::new(0.0..=100.0, value);
 /// ```
 ///
-/// ![Default Progressbar](https://user-images.githubusercontent.com/18618951/71662391-a316c200-2d51-11ea-9cef-52758cab85e3.png)
+/// ![Default ProgressBar](https://user-images.githubusercontent.com/18618951/71662391-a316c200-2d51-11ea-9cef-52758cab85e3.png)
 #[allow(missing_debug_implementations)]
-pub struct Progressbar {
+pub struct ProgressBar {
     range: RangeInclusive<f32>,
     value: f32,
     width: Length,
+    height: Length,
     background: Option<Background>,
     active_color: Option<Color>,
 }
 
-impl Progressbar {
-    /// Creates a new [`Progressbar`].
+impl ProgressBar {
+    /// Creates a new [`ProgressBar`].
     ///
     /// It expects:
     ///   * an inclusive range of possible values
-    ///   * the current value of the [`Progressbar`]
+    ///   * the current value of the [`ProgressBar`]
     ///
-    /// [`Progressbar`]: struct.Progressbar.html
+    /// [`ProgressBar`]: struct.ProgressBar.html
     pub fn new(range: RangeInclusive<f32>, value: f32) -> Self {
-        Progressbar {
+        ProgressBar {
             value: value.max(*range.start()).min(*range.end()),
             range,
             width: Length::Fill,
+            height: DEFAULT_HEIGHT,
             background: None,
             active_color: None,
         }
     }
 
-    /// Sets the width of the [`Progressbar`].
+    /// Sets the width of the [`ProgressBar`].
     ///
-    /// [`Progressbar`]: struct.Progressbar.html
+    /// [`ProgressBar`]: struct.ProgressBar.html
     pub fn width(mut self, width: Length) -> Self {
         self.width = width;
         self
     }
 
-    /// Sets the background of the [`Progressbar`].
+    /// Sets the height of the [`ProgressBar`].
     ///
-    /// [`Progressbar`]: struct.Progressbar.html
+    /// [`ProgressBar`]: struct.ProgressBar.html
+    pub fn height(mut self, height: Length) -> Self {
+        self.height = height;
+        self
+    }
+
+    /// Sets the background of the [`ProgressBar`].
+    ///
+    /// [`ProgressBar`]: struct.ProgressBar.html
     pub fn background(mut self, background: Background) -> Self {
         self.background = Some(background);
         self
     }
 
-    /// Sets the active color of the [`Progressbar`].
+    /// Sets the active color of the [`ProgressBar`].
     ///
-    /// [`Progressbar`]: struct.Progressbar.html
+    /// [`ProgressBar`]: struct.ProgressBar.html
     pub fn active_color(mut self, active_color: Color) -> Self {
         self.active_color = Some(active_color);
         self
     }
 }
 
-impl<Message, Renderer> Widget<Message, Renderer> for Progressbar
+impl<Message, Renderer> Widget<Message, Renderer> for ProgressBar
 where
     Renderer: self::Renderer,
 {
@@ -82,17 +94,15 @@ where
     }
 
     fn height(&self) -> Length {
-        Length::Shrink
+        self.height
     }
 
     fn layout(
         &self,
-        renderer: &Renderer,
+        _renderer: &Renderer,
         limits: &layout::Limits,
     ) -> layout::Node {
-        let limits = limits
-            .width(self.width)
-            .height(Length::Units(renderer.height() as u16));
+        let limits = limits.width(self.width).height(self.height);
 
         let size = limits.resolve(Size::ZERO);
 
@@ -119,30 +129,25 @@ where
     }
 }
 
-/// The renderer of a [`Progressbar`].
+/// The renderer of a [`ProgressBar`].
 ///
 /// Your [renderer] will need to implement this trait before being
-/// able to use a [`Progressbar`] in your user interface.
+/// able to use a [`ProgressBar`] in your user interface.
 ///
-/// [`Progressbar`]: struct.Progressbar.html
+/// [`ProgressBar`]: struct.ProgressBar.html
 /// [renderer]: ../../renderer/index.html
 pub trait Renderer: crate::Renderer {
-    /// Returns the height of the [`Progressbar`].
-    ///
-    /// [`Progressbar`]: struct.Progressbar.html
-    fn height(&self) -> u32;
-
-    /// Draws a [`Progressbar`].
+    /// Draws a [`ProgressBar`].
     ///
     /// It receives:
-    ///   * the local state of the [`Progressbar`]
-    ///   * the bounds of the [`Progressbar`]
-    ///   * the range of values of the [`Progressbar`]
-    ///   * the current value of the [`Progressbar`]
-    ///   * maybe a specific background of the [`Progressbar`]
-    ///   * maybe a specific active color of the [`Progressbar`]
+    ///   * the local state of the [`ProgressBar`]
+    ///   * the bounds of the [`ProgressBar`]
+    ///   * the range of values of the [`ProgressBar`]
+    ///   * the current value of the [`ProgressBar`]
+    ///   * maybe a specific background of the [`ProgressBar`]
+    ///   * maybe a specific active color of the [`ProgressBar`]
     ///
-    /// [`Progressbar`]: struct.Progressbar.html
+    /// [`ProgressBar`]: struct.ProgressBar.html
     /// [`State`]: struct.State.html
     /// [`Class`]: enum.Class.html
     fn draw(
@@ -155,12 +160,12 @@ pub trait Renderer: crate::Renderer {
     ) -> Self::Output;
 }
 
-impl<'a, Message, Renderer> From<Progressbar> for Element<'a, Message, Renderer>
+impl<'a, Message, Renderer> From<ProgressBar> for Element<'a, Message, Renderer>
 where
     Renderer: self::Renderer,
     Message: 'static,
 {
-    fn from(progressbar: Progressbar) -> Element<'a, Message, Renderer> {
+    fn from(progressbar: ProgressBar) -> Element<'a, Message, Renderer> {
         Element::new(progressbar)
     }
 }

wgpu/src/renderer/widget.rs

@@ -2,7 +2,7 @@ mod button;
 mod checkbox;
 mod column;
 mod image;
-mod progressbar;
+mod progress_bar;
 mod radio;
 mod row;
 mod scrollable;

wgpu/src/renderer/widget/progress_bar.rs

@@ -1,11 +1,7 @@
 use crate::{Primitive, Renderer};
-use iced_native::{progressbar, Background, Color, MouseCursor, Rectangle};
-
-impl progressbar::Renderer for Renderer {
-    fn height(&self) -> u32 {
-        30
-    }
+use iced_native::{progress_bar, Background, Color, MouseCursor, Rectangle};
 
+impl progress_bar::Renderer for Renderer {
     fn draw(
         &self,
         bounds: Rectangle,