From 2deed2d10c19c1324877ccaed66c18f0cb03120d Mon Sep 17 00:00:00 2001
From: Michail Vourlakos <mvourlakos@gmail.com>
Date: Mon, 30 Nov 2020 21:06:24 +0200
Subject: [PATCH] visibilitymanager use effects to hide/show mask

---
 app/view/visibilitymanager.cpp | 16 ++++++++++++----
 app/view/visibilitymanager.h   |  2 +-
 2 files changed, 13 insertions(+), 5 deletions(-)

diff --git a/app/view/visibilitymanager.cpp b/app/view/visibilitymanager.cpp
index 38325b1ac..778561ccb 100644
--- a/app/view/visibilitymanager.cpp
+++ b/app/view/visibilitymanager.cpp
@@ -643,14 +643,22 @@ void VisibilityManager::updateGhostWindowState()
 
 void VisibilityManager::hide()
 {
-    m_lastMask = m_latteView->mask();
-    m_latteView->setMask(ISHIDDENMASK);
+    if (!m_latteView->effects()) {
+        return;
+    }
+
+    m_lastMask = m_latteView->effects()->mask();
+    m_latteView->effects()->setMask(ISHIDDENMASK);
 }
 
 void VisibilityManager::show()
 {
-    if (m_latteView->mask() == ISHIDDENMASK) {
-        m_latteView->setMask(m_lastMask);
+    if (!m_latteView->effects()) {
+        return;
+    }
+
+    if (m_latteView->effects()->mask() == ISHIDDENMASK) {
+        m_latteView->effects()->setMask(m_lastMask);
     }
 }
 
diff --git a/app/view/visibilitymanager.h b/app/view/visibilitymanager.h
index ac5d2aff5..95433df51 100644
--- a/app/view/visibilitymanager.h
+++ b/app/view/visibilitymanager.h
@@ -224,7 +224,7 @@ private:
     QStringList m_blockHidingEvents;
 
     QRect m_publishedStruts;
-    QRegion m_lastMask;
+    QRect m_lastMask;
 
     //! KWin Edges
     bool m_enableKWinEdgesFromUser{true};