From 3c9e9366534187cd880ad5a975a411ce443a42fe Mon Sep 17 00:00:00 2001
From: Kanyin Cai <kanyin.cai@sap.com>
Date: Sat, 21 Mar 2026 13:47:38 +0100
Subject: [PATCH] fix(02-01): preserve aspect ratio in fir_resize

The old image crate's DynamicImage::resize() fitted within (w, h)
bounds while preserving aspect ratio. fir_resize() was resizing to
exact dimensions, stretching images to fill the preview panel.
---
 yazi-adapter/src/image.rs | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/yazi-adapter/src/image.rs b/yazi-adapter/src/image.rs
index abac7d09..8a67663b 100644
--- a/yazi-adapter/src/image.rs
+++ b/yazi-adapter/src/image.rs
@@ -101,6 +101,13 @@ impl Image {
 	}
 
 	fn fir_resize(img: DynamicImage, w: u32, h: u32, alg: ResizeAlg) -> anyhow::Result<DynamicImage> {
+		// Preserve aspect ratio: fit within (w, h) bounds, matching the old
+		// DynamicImage::resize() behavior.
+		let (w, h) = {
+			let ratio = (w as f64 / img.width() as f64).min(h as f64 / img.height() as f64);
+			((img.width() as f64 * ratio).round() as u32, (img.height() as f64 * ratio).round() as u32)
+		};
+
 		let img = match img.pixel_type() {
 			Some(_) => img,
 			None => {