remove gtk_frame_extents from window geometries

--under x11 environment remove the gtk_frame_extents that
are used for shadows under plasma environment

BUG:417856

app/wm/xwindowinterface.cpp

@@ -332,6 +332,23 @@ void XWindowInterface::setActiveEdge(QWindow *view, bool active) const
     xcb_change_property(c, XCB_PROP_MODE_REPLACE, window->winId(), atom->atom, XCB_ATOM_CARDINAL, 32, 1, &value);
 }
 
+#if KF5_VERSION_MINOR >= 65
+QRect XWindowInterface::visibleGeometry(const WindowId &wid, const QRect &frameGeometry) const
+{
+
+    NETWinInfo ni(QX11Info::connection(), wid.toUInt(), QX11Info::appRootWindow(), 0, NET::WM2GTKFrameExtents);
+    NETStrut struts = ni.gtkFrameExtents();
+    QMargins margins(struts.left, struts.top, struts.right, struts.bottom);
+    QRect visibleGeometry = frameGeometry;
+
+    if (!margins.isNull()) {
+        visibleGeometry -= margins;
+    }
+
+    return visibleGeometry;
+}
+#endif
+
 WindowInfoWrap XWindowInterface::requestInfoActive() const
 {
     return requestInfo(KWindowSystem::activeWindow());
@@ -367,7 +384,11 @@ WindowInfoWrap XWindowInterface::requestInfo(WindowId wid) const
         winfoWrap.setIsShaded(winfo.hasState(NET::Shaded));
         winfoWrap.setIsOnAllDesktops(winfo.onAllDesktops());
         winfoWrap.setIsOnAllActivities(winfo.activities().empty());
+#if KF5_VERSION_MINOR >= 65
+        winfoWrap.setGeometry(visibleGeometry(wid, winfo.frameGeometry()));
+#else
         winfoWrap.setGeometry(winfo.frameGeometry());
+#endif
         winfoWrap.setIsKeepAbove(winfo.hasState(NET::KeepAbove));
         winfoWrap.setIsKeepBelow(winfo.hasState(NET::KeepBelow));
         winfoWrap.setHasSkipTaskbar(winfo.hasState(NET::SkipTaskbar));

app/wm/xwindowinterface.h

@@ -22,6 +22,7 @@
 #define XWINDOWINTERFACE_H
 
 // local
+#include <config-latte.h>
 #include "abstractwindowinterface.h"
 #include "windowinfowrap.h"
 
@@ -86,6 +87,10 @@ private:
     bool isValidWindow(const KWindowInfo &winfo) const;
     bool isFullScreenWindow(WindowId wid) const;
 
+#if KF5_VERSION_MINOR >= 65
+    QRect visibleGeometry(const WindowId &wid, const QRect &frameGeometry) const;
+#endif
+
     bool isAcceptableWindow(WId wid);
     void windowAddedProxy(WId wid);
     void windowChangedProxy(WId wid, NET::Properties prop1, NET::Properties2 prop2);