Implement HardRedraw for eeschema and libedit.

eeschema/libedit/lib_edit_frame.cpp

@@ -1720,11 +1720,13 @@ void LIB_EDIT_FRAME::ShowChangedLanguage()
     UpdateMsgPanel();
 }
 
+
 void LIB_EDIT_FRAME::SetScreen( BASE_SCREEN* aScreen )
 {
     EDA_DRAW_FRAME::SetScreen( aScreen );
 }
 
+
 void LIB_EDIT_FRAME::RebuildView()
 {
     KIGFX::SCH_VIEW* view = GetCanvas()->GetView();
@@ -1742,6 +1744,13 @@ void LIB_EDIT_FRAME::RebuildView()
     GetCanvas()->Refresh();
 }
 
+
+void LIB_EDIT_FRAME::HardRedraw()
+{
+    RebuildView();
+}
+
+
 const BOX2I LIB_EDIT_FRAME::GetDocumentExtents() const
 {
     LIB_PART*  part = GetCurPart();

eeschema/libedit/lib_edit_frame.h

@@ -715,6 +715,11 @@ public:
 
     void RebuildView();
 
+    /**
+     * Rebuild the GAL and redraw the screen.  Call when something went wrong.
+     */
+    void HardRedraw() override;
+
     /**
      * Checks all draw objects of part to see if they are with block.
      *

eeschema/sch_edit_frame.cpp

@@ -592,6 +592,13 @@ void SCH_EDIT_FRAME::SetCurrentSheet( const SCH_SHEET_PATH& aSheet )
 }
 
 
+void SCH_EDIT_FRAME::HardRedraw()
+{
+    static_cast<SCH_DRAW_PANEL*>( m_canvas )->DisplaySheet( m_CurrentSheet->LastScreen() );
+    GetCanvas()->Refresh();
+}
+
+
 void SCH_EDIT_FRAME::SetUndoItem( const SCH_ITEM* aItem )
 {
     // if aItem != NULL, delete a previous m_undoItem, if exists

eeschema/sch_edit_frame.h

@@ -626,6 +626,11 @@ public:
 
     void SetCurrentSheet( const SCH_SHEET_PATH& aSheet );
 
+    /**
+     * Rebuild the GAL and redraw the screen.  Call when something went wrong.
+     */
+    void HardRedraw() override;
+
     /**
      * Draw the current sheet on the display.
      */