Merge branch 'master' into advanced-text

7 files changed, 92 insertions, 8 deletions

diff --git a/core/Cargo.toml b/core/Cargo.toml
index dac31828..92d9773f 100644
--- a/core/Cargo.toml
+++ b/core/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "iced_core"
-version = "0.8.1"
+version = "0.9.0"
 authors = ["Héctor Ramón Jiménez <hector0193@gmail.com>"]
 edition = "2021"
 description = "The essential concepts of Iced"
diff --git a/core/README.md b/core/README.md
index 64d92e78..519e0608 100644
--- a/core/README.md
+++ b/core/README.md
@@ -18,7 +18,7 @@ This crate is meant to be a starting point for an Iced runtime.
 Add `iced_core` as a dependency in your `Cargo.toml`:
 
 ```toml
-iced_core = "0.8"
+iced_core = "0.9"
 ```
 
 __Iced moves fast and the `master` branch can contain breaking changes!__ If
diff --git a/core/src/lib.rs b/core/src/lib.rs
index 5bdcee6a..89dfb828 100644
--- a/core/src/lib.rs
+++ b/core/src/lib.rs
@@ -7,7 +7,7 @@
 //! ![The foundations of the Iced ecosystem](https://github.com/iced-rs/iced/blob/0525d76ff94e828b7b21634fa94a747022001c83/docs/graphs/foundations.png?raw=true)
 //!
 //! [Iced]: https://github.com/iced-rs/iced
-//! [`iced_native`]: https://github.com/iced-rs/iced/tree/0.8/native
+//! [`iced_native`]: https://github.com/iced-rs/iced/tree/0.9/native
 //! [`iced_web`]: https://github.com/iced-rs/iced_web
 #![doc(
     html_logo_url = "https://raw.githubusercontent.com/iced-rs/iced/9ab6923e943f784985e9ef9ca28b10278297225d/docs/logo.svg"
diff --git a/core/src/mouse/interaction.rs b/core/src/mouse/interaction.rs
index 57da93fe..072033fd 100644
--- a/core/src/mouse/interaction.rs
+++ b/core/src/mouse/interaction.rs
@@ -12,4 +12,5 @@ pub enum Interaction {
     Grabbing,
     ResizingHorizontally,
     ResizingVertically,
+    NotAllowed,
 }
diff --git a/core/src/widget.rs b/core/src/widget.rs
index 70e2c2d9..769f8659 100644
--- a/core/src/widget.rs
+++ b/core/src/widget.rs
@@ -33,12 +33,12 @@ use crate::{Clipboard, Length, Point, Rectangle, Shell};
 /// - [`geometry`], a custom widget showcasing how to draw geometry with the
 /// `Mesh2D` primitive in [`iced_wgpu`].
 ///
-/// [examples]: https://github.com/iced-rs/iced/tree/0.8/examples
-/// [`bezier_tool`]: https://github.com/iced-rs/iced/tree/0.8/examples/bezier_tool
-/// [`custom_widget`]: https://github.com/iced-rs/iced/tree/0.8/examples/custom_widget
-/// [`geometry`]: https://github.com/iced-rs/iced/tree/0.8/examples/geometry
+/// [examples]: https://github.com/iced-rs/iced/tree/0.9/examples
+/// [`bezier_tool`]: https://github.com/iced-rs/iced/tree/0.9/examples/bezier_tool
+/// [`custom_widget`]: https://github.com/iced-rs/iced/tree/0.9/examples/custom_widget
+/// [`geometry`]: https://github.com/iced-rs/iced/tree/0.9/examples/geometry
 /// [`lyon`]: https://github.com/nical/lyon
-/// [`iced_wgpu`]: https://github.com/iced-rs/iced/tree/0.8/wgpu
+/// [`iced_wgpu`]: https://github.com/iced-rs/iced/tree/0.9/wgpu
 pub trait Widget<Message, Renderer>
 where
     Renderer: crate::Renderer,
diff --git a/core/src/window.rs b/core/src/window.rs
index d829a4b4..81bd7e3d 100644
--- a/core/src/window.rs
+++ b/core/src/window.rs
@@ -1,10 +1,13 @@
 //! Build window-based GUI applications.
+pub mod icon;
+
 mod event;
 mod mode;
 mod redraw_request;
 mod user_attention;
 
 pub use event::Event;
+pub use icon::Icon;
 pub use mode::Mode;
 pub use redraw_request::RedrawRequest;
 pub use user_attention::UserAttention;
diff --git a/core/src/window/icon.rs b/core/src/window/icon.rs
new file mode 100644
index 00000000..31868ecf
--- /dev/null
+++ b/core/src/window/icon.rs
@@ -0,0 +1,80 @@
+//! Change the icon of a window.
+use crate::Size;
+
+use std::mem;
+
+/// Builds an  [`Icon`] from its RGBA pixels in the sRGB color space.
+pub fn from_rgba(
+    rgba: Vec<u8>,
+    width: u32,
+    height: u32,
+) -> Result<Icon, Error> {
+    const PIXEL_SIZE: usize = mem::size_of::<u8>() * 4;
+
+    if rgba.len() % PIXEL_SIZE != 0 {
+        return Err(Error::ByteCountNotDivisibleBy4 {
+            byte_count: rgba.len(),
+        });
+    }
+
+    let pixel_count = rgba.len() / PIXEL_SIZE;
+
+    if pixel_count != (width * height) as usize {
+        return Err(Error::DimensionsVsPixelCount {
+            width,
+            height,
+            width_x_height: (width * height) as usize,
+            pixel_count,
+        });
+    }
+
+    Ok(Icon {
+        rgba,
+        size: Size::new(width, height),
+    })
+}
+
+/// An window icon normally used for the titlebar or taskbar.
+#[derive(Debug, Clone)]
+pub struct Icon {
+    rgba: Vec<u8>,
+    size: Size<u32>,
+}
+
+impl Icon {
+    /// Returns the raw data of the [`Icon`].
+    pub fn into_raw(self) -> (Vec<u8>, Size<u32>) {
+        (self.rgba, self.size)
+    }
+}
+
+#[derive(Debug, thiserror::Error)]
+/// An error produced when using [`Icon::from_rgba`] with invalid arguments.
+pub enum Error {
+    /// Produced when the length of the `rgba` argument isn't divisible by 4, thus `rgba` can't be
+    /// safely interpreted as 32bpp RGBA pixels.
+    #[error(
+        "The provided RGBA data (with length {byte_count}) isn't divisible \
+        by 4. Therefore, it cannot be safely interpreted as 32bpp RGBA pixels"
+    )]
+    ByteCountNotDivisibleBy4 {
+        /// The length of the provided RGBA data.
+        byte_count: usize,
+    },
+    /// Produced when the number of pixels (`rgba.len() / 4`) isn't equal to `width * height`.
+    /// At least one of your arguments is incorrect.
+    #[error(
+        "The number of RGBA pixels ({pixel_count}) does not match the \
+        provided dimensions ({width}x{height})."
+    )]
+    DimensionsVsPixelCount {
+        /// The provided width.
+        width: u32,
+        /// The provided height.
+        height: u32,
+        /// The product of `width` and `height`.
+        width_x_height: usize,
+        /// The amount of pixels of the provided RGBA data.
+        pixel_count: usize,
+    },
+}