refactor: split every monolithic module into focused submodules

Each source file that had grown beyond a single concern is replaced by an identically-named directory containing focused submodules. `src/event_loop/mod.rs` (878 lines) becomes a directory with clipboard, context_menu, cursor_shape, drag, focus, handlers, invalidation, overlays_reconcile, repeat, run, surface, text_editing, and tooltip. Every widget, input handler, and theme component follows the same split. Public interfaces are unchanged — only the internal file layout moves.
image bumped from 0.25.2 to 0.25.9.

src/widget/image/mod.rs

@@ -0,0 +1,107 @@
+// SPDX-License-Identifier: LGPL-2.1-only
+// Copyright (C) 2026 Liberux Labs, S. L. <info@liberux.net>
+
+use std::sync::Arc;
+use crate::types::Rect;
+use crate::render::Canvas;
+
+/// A static image widget that renders RGBA pixel data.
+///
+/// Images are scaled to fill their allocated rect. Alpha blending against the
+/// background is handled automatically (straight → premultiplied conversion).
+///
+/// The pixel buffer is shared via `Arc` so reusing the same image across
+/// frames (e.g. a background decoded once at startup) is a cheap pointer
+/// copy instead of a full `Vec<u8>` clone.
+///
+/// ```rust,no_run
+/// # use std::sync::Arc;
+/// # use ltk::{ img_widget, Element };
+/// # #[ derive( Clone ) ] enum Msg {}
+/// # fn _ex( rgba_bytes: Arc<Vec<u8>>, width: u32, height: u32 ) -> Element<Msg> {
+/// img_widget( rgba_bytes, width, height )
+///     .opacity( 0.8 )
+/// .into()
+/// # }
+/// ```
+pub struct Image
+{
+	/// Raw RGBA pixel data (4 bytes per pixel, straight alpha).
+	pub rgba:    Arc<Vec<u8>>,
+	/// Pixel width of the source image.
+	pub width:   u32,
+	/// Pixel height of the source image.
+	pub height:  u32,
+	/// When `true` the image scales to fill the available width (cover mode).
+	pub cover:   bool,
+	/// Optional explicit display size in logical pixels.
+	pub display_size: Option<( f32, f32 )>,
+	/// Opacity multiplier in `[0.0, 1.0]`. Default: `1.0`.
+	pub opacity: f32,
+}
+
+impl Image
+{
+	/// Create an image from a shared RGBA buffer.
+	///
+	/// `width` and `height` must match the dimensions of `rgba`.
+	pub fn new( rgba: Arc<Vec<u8>>, width: u32, height: u32 ) -> Self
+	{
+		Self { rgba, width, height, cover: false, display_size: None, opacity: 1.0 }
+	}
+
+	/// Load an image from a file path. Supports PNG, JPEG, and other formats
+	/// supported by the [`image`](https://crates.io/crates/image) crate.
+	pub fn from_path( path: &str ) -> Result<Self, Box<dyn std::error::Error>>
+	{
+		let img = image::open( path )?.into_rgba8();
+		let ( width, height ) = img.dimensions();
+		Ok( Self { rgba: Arc::new( img.into_raw() ), width, height, cover: false, display_size: None, opacity: 1.0 } )
+	}
+
+	/// Scale the image to fill the available width, preserving aspect ratio (cover mode).
+	pub fn cover( mut self ) -> Self
+	{
+		self.cover = true;
+		self
+	}
+
+	/// Set an explicit display size in logical pixels.
+	pub fn size( mut self, width: f32, height: f32 ) -> Self
+	{
+		self.display_size = Some( ( width.max( 0.0 ), height.max( 0.0 ) ) );
+		self
+	}
+
+	/// Set the opacity multiplier. Clamped to `[0.0, 1.0]`.
+	pub fn opacity( mut self, o: f32 ) -> Self
+	{
+		self.opacity = o.clamp( 0.0, 1.0 );
+		self
+	}
+
+	/// Return the preferred `(width, height)` given available `max_width`.
+	pub fn preferred_size( &self, max_width: f32 ) -> (f32, f32)
+	{
+		if let Some( size ) = self.display_size
+		{
+			return size;
+		}
+		if self.cover
+		{
+			( max_width, max_width * self.height as f32 / self.width as f32 )
+		} else {
+			let scale = max_width / self.width as f32;
+			( max_width, self.height as f32 * scale )
+		}
+	}
+
+	/// Draw the image into `canvas` at `rect`.
+	pub fn draw( &self, canvas: &mut Canvas, rect: Rect )
+	{
+		canvas.draw_image_data( &self.rgba[..], self.width, self.height, rect, self.opacity );
+	}
+}
+
+#[ cfg( test ) ]
+mod tests;