Add a QRect to showWindowMenu

This is so we don't have to rely on the cursor position for the popup

BUG: 393163

decorations/decoratedclient.cpp

@@ -226,10 +226,9 @@ void DecoratedClientImpl::requestHideToolTip()
     m_toolTipShowing = false;
 }
 
-void DecoratedClientImpl::requestShowWindowMenu()
+void DecoratedClientImpl::requestShowWindowMenu(const QRect &rect)
 {
-    // TODO: add rect to requestShowWindowMenu
-    Workspace::self()->showWindowMenu(QRect(Cursors::self()->mouse()->pos(), Cursors::self()->mouse()->pos()), m_client);
+    Workspace::self()->showWindowMenu(QRect(m_client->pos() + rect.topLeft(), m_client->pos() + rect.bottomRight()), m_client);
 }
 
 void DecoratedClientImpl::requestShowApplicationMenu(const QRect &rect, int actionId)

decorations/decoratedclient.h

@@ -70,7 +70,7 @@ public:
     void requestContextHelp() override;
     void requestToggleMaximization(Qt::MouseButtons buttons) override;
     void requestMinimize() override;
-    void requestShowWindowMenu() override;
+    void requestShowWindowMenu(const QRect &rect) override;
     void requestShowApplicationMenu(const QRect &rect, int actionId) override;
     void requestToggleKeepAbove() override;
     void requestToggleKeepBelow() override;

kcmkwin/kwindecoration/declarative-plugin/previewclient.cpp

@@ -391,8 +391,9 @@ void PreviewClient::requestToggleKeepBelow()
     setKeepBelow(!isKeepBelow());
 }
 
-void PreviewClient::requestShowWindowMenu()
+void PreviewClient::requestShowWindowMenu(const QRect &rect)
 {
+    Q_UNUSED(rect)
     emit showWindowMenuRequested();
 }
 

kcmkwin/kwindecoration/declarative-plugin/previewclient.h

@@ -93,7 +93,7 @@ public:
     void requestToggleKeepAbove() override;
     void requestToggleKeepBelow() override;
     void requestToggleShade() override;
-    void requestShowWindowMenu() override;
+    void requestShowWindowMenu(const QRect &rect) override;
     void requestShowApplicationMenu(const QRect &rect, int actionId) override;
     void requestToggleOnAllDesktops() override;