lokdialog: Callback for dialog cursor invalidation

Change-Id: Iecadb68737ed7b1a425d9ea633976fb24d1055c6
Reviewed-on: https://gerrit.libreoffice.org/44721Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: pranavk <pranavk@collabora.co.uk>

include/vcl/dialog.hxx

@@ -97,6 +97,7 @@ public:
 
     void LOKKeyInput(const KeyEvent& rKeyEvent);
     void LOKKeyUp(const KeyEvent& rKeyEvent);
+    void LOKCursorInvalidate(const tools::Rectangle& rRect);
 
 protected:
     explicit        Dialog( WindowType nType );

vcl/headless/svpinst.cxx

@@ -266,7 +266,7 @@ bool SvpSalInstance::DoYield(bool bWait, bool bHandleAllCurrentEvents)
 {
     // first, process current user events
     bool bEvent = DispatchUserEvents( bHandleAllCurrentEvents );
-    if ( !bHandleAllCurrentEvents &&bEvent )
+    if ( !bHandleAllCurrentEvents && bEvent )
         return true;
 
     bEvent = CheckTimeout() || bEvent;

vcl/source/control/edit.cxx

@@ -17,6 +17,8 @@
  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  */
 
+#include <comphelper/lok.hxx>
+
 #include <vcl/decoview.hxx>
 #include <vcl/event.hxx>
 #include <vcl/cursor.hxx>
@@ -1143,6 +1145,18 @@ void Edit::ImplShowCursor( bool bOnlyIfVisible )
         pCursor->SetSize( Size( nCursorWidth, nTextHeight ) );
         pCursor->Show();
     }
+
+    if (comphelper::LibreOfficeKit::isActive())
+    {
+        const long X = GetOutOffXPixel() + pCursor->GetPos().X();
+        const long Y = GetOutOffYPixel() + pCursor->GetPos().Y();
+        if (nCursorWidth == 0)
+            nCursorWidth = 2;
+        const tools::Rectangle aRect(Point(X, Y), Size(nCursorWidth, pCursor->GetHeight()));
+        Dialog* pParentDlg = GetParentDialog();
+        if (pParentDlg)
+            pParentDlg->LOKCursorInvalidate(aRect);
+    }
 }
 
 void Edit::ImplAlign()

vcl/source/window/dialog.cxx

@@ -1015,6 +1015,16 @@ void Dialog::LOKKeyUp(const KeyEvent& rKeyEvent)
     ImplWindowFrameProc(this, SalEvent::ExternalKeyUp, &rKeyEvent);
 }
 
+void Dialog::LOKCursorInvalidate(const tools::Rectangle& aRect)
+{
+    assert(comphelper::LibreOfficeKit::isActive());
+
+    if (!comphelper::LibreOfficeKit::isDialogPainting() && mpDialogRenderable && !maID.isEmpty())
+    {
+        mpDialogRenderable->notifyDialog(maID, "cursor_invalidate", &aRect);
+    }
+}
+
 void Dialog::ensureRepaint()
 {
     // ensure repaint