From ba5bc5871fb015a8fb55ff6991bc951f677a2a4f Mon Sep 17 00:00:00 2001
From: Vaxry <vaxry@vaxry.net>
Date: Sun, 12 Nov 2023 23:06:31 +0000
Subject: [PATCH] subsurfaces: damage window on subsurface size change

---
 src/helpers/SubsurfaceTree.cpp | 10 +++++++++-
 src/helpers/SubsurfaceTree.hpp |  2 ++
 2 files changed, 11 insertions(+), 1 deletion(-)

diff --git a/src/helpers/SubsurfaceTree.cpp b/src/helpers/SubsurfaceTree.cpp
index c10d45e1..5891411b 100644
--- a/src/helpers/SubsurfaceTree.cpp
+++ b/src/helpers/SubsurfaceTree.cpp
@@ -220,6 +220,8 @@ void Events::listener_commitSubsurface(void* owner, void* data) {
 
     // no damaging if it's not visible
     if (!g_pHyprRenderer->shouldRenderWindow(pNode->pWindowOwner)) {
+        pNode->lastSize = pNode->pSurface->exists() ? Vector2D{pNode->pSurface->wlr()->current.width, pNode->pSurface->wlr()->current.height} : Vector2D{};
+
         static auto* const PLOGDAMAGE = &g_pConfigManager->getConfigValuePtr("debug:log_damage")->intValue;
         if (*PLOGDAMAGE)
             Debug::log(LOG, "Refusing to commit damage from {} because it's invisible.", pNode->pWindowOwner);
@@ -244,9 +246,13 @@ void Events::listener_commitSubsurface(void* owner, void* data) {
             }
         }
 
-    if (pNode->pSurface && pNode->pSurface->exists())
+    if (pNode->pSurface && pNode->pSurface->exists()) {
         g_pHyprRenderer->damageSurface(pNode->pSurface->wlr(), lx, ly, SCALE);
 
+        if (pNode->lastSize != Vector2D{pNode->pSurface->wlr()->current.width, pNode->pSurface->wlr()->current.height} && pNode->pWindowOwner)
+            g_pHyprRenderer->damageWindow(pNode->pWindowOwner);
+    }
+
     if (pNode->pWindowOwner) {
         if (pNode->pWindowOwner->m_bIsX11)
             pNode->pWindowOwner->m_vReportedSize = pNode->pWindowOwner->m_vPendingReportedSize; // apply pending size. We pinged, the window ponged.
@@ -269,6 +275,8 @@ void Events::listener_commitSubsurface(void* owner, void* data) {
             }
         }
     }
+
+    pNode->lastSize = pNode->pSurface->exists() ? Vector2D{pNode->pSurface->wlr()->current.width, pNode->pSurface->wlr()->current.height} : Vector2D{};
 }
 
 void Events::listener_destroySubsurface(void* owner, void* data) {
diff --git a/src/helpers/SubsurfaceTree.hpp b/src/helpers/SubsurfaceTree.hpp
index d6f04a58..7a8b8fb8 100644
--- a/src/helpers/SubsurfaceTree.hpp
+++ b/src/helpers/SubsurfaceTree.hpp
@@ -26,6 +26,8 @@ struct SSurfaceTreeNode {
     void*                  globalOffsetData;
     CWindow*               pWindowOwner = nullptr;
 
+    Vector2D               lastSize;
+
     //
     bool operator==(const SSurfaceTreeNode& rhs) const {
         return pSurface == rhs.pSurface;