From 7054c872e37f70b0cfda777d21f2df4bd5335cc6 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Leonardo=20Gibrowski=20Fa=C3=A9?= <leonardo.fae44@gmail.com>
Date: Thu, 11 Apr 2024 12:21:21 -0300
Subject: [PATCH] accept and process buffer transform events

---
 daemon/src/main.rs      | 13 +++++++++++--
 daemon/src/wallpaper.rs | 11 ++++++++++-
 2 files changed, 21 insertions(+), 3 deletions(-)

diff --git a/daemon/src/main.rs b/daemon/src/main.rs
index e7d96033..b697fc11 100644
--- a/daemon/src/main.rs
+++ b/daemon/src/main.rs
@@ -558,8 +558,17 @@ impl Dispatch<WlSurface, ()> for Daemon {
                 }
                 warn!("received new scale factor for non-existing surface")
             }
-            wl_surface::Event::PreferredBufferTransform { .. } => {
-                warn!("Received transform. We currently ignore those")
+            wl_surface::Event::PreferredBufferTransform { transform } => {
+                if let wayland_client::WEnum::Value(transform) = transform {
+                    for wallpaper in state.wallpapers.iter_mut() {
+                        if wallpaper.has_surface(proxy) {
+                            wallpaper.set_transform(transform);
+                            wallpaper.commit_surface_changes();
+                            return;
+                        }
+                    }
+                    warn!("received new transform for non-existing surface")
+                }
             }
             e => error!("unrecognized WlSurface event: {e:?}"),
         }
diff --git a/daemon/src/wallpaper.rs b/daemon/src/wallpaper.rs
index fb692693..4b0cac17 100644
--- a/daemon/src/wallpaper.rs
+++ b/daemon/src/wallpaper.rs
@@ -10,7 +10,11 @@ use std::{
 };
 
 use wayland_client::{
-    protocol::{wl_output::WlOutput, wl_shm::WlShm, wl_surface::WlSurface},
+    protocol::{
+        wl_output::{Transform, WlOutput},
+        wl_shm::WlShm,
+        wl_surface::WlSurface,
+    },
     Proxy, QueueHandle,
 };
 
@@ -189,6 +193,11 @@ impl Wallpaper {
         }
     }
 
+    #[inline]
+    pub fn set_transform(&self, transform: Transform) {
+        self.wl_surface.set_buffer_transform(transform);
+    }
+
     #[inline]
     pub fn commit_surface_changes(&self) {
         let mut inner = self.inner.write().unwrap();