From 1e0862acdc2e6ccf77bf3a1436b877d3af5e5fe7 Mon Sep 17 00:00:00 2001

From: Jan Grulich <jgrulich@redhat.com>

Date: Wed, 10 Feb 2021 17:11:27 +0100

Subject: [PATCH] Translate opaque area with frame margins

The opaque area doesn't take window decorations into account, which may

result into possible graphical artefacts.

Pick-to: 5.15

Change-Id: I1606e8256e7e204dad927931eb1221b576e227fd

---

diff --git a/src/client/qwaylandwindow.cpp b/src/client/qwaylandwindow.cpp

index 04c2dbd..b29edfa 100644

--- a/src/client/qwaylandwindow.cpp

+++ b/src/client/qwaylandwindow.cpp

@@ -1242,12 +1242,14 @@

 void QWaylandWindow::setOpaqueArea(const QRegion &opaqueArea)

 {

-    if (opaqueArea == mOpaqueArea || !mSurface)

+    const QRegion translatedOpaqueArea = opaqueArea.translated(frameMargins().left(), frameMargins().top());

+

+    if (translatedOpaqueArea == mOpaqueArea || !mSurface)

         return;

-    mOpaqueArea = opaqueArea;

+    mOpaqueArea = translatedOpaqueArea;

-    struct ::wl_region *region = mDisplay->createRegion(opaqueArea);

+    struct ::wl_region *region = mDisplay->createRegion(translatedOpaqueArea);

     mSurface->set_opaque_region(region);

     wl_region_destroy(region);

 }