GerbView: Add actions to reload files

NEW: Adds new items in File Menu and Toolbar to reload the Gerber files
for all layers.

Fixes: lp:1794004
* https://bugs.launchpad.net/kicad/+bug/1794004

gerbview/events_called_functions.cpp

@@ -57,6 +57,7 @@ BEGIN_EVENT_TABLE( GERBVIEW_FRAME, EDA_DRAW_FRAME )
 
     EVT_TOOL( wxID_FILE, GERBVIEW_FRAME::Files_io )
     EVT_TOOL( ID_GERBVIEW_ERASE_ALL, GERBVIEW_FRAME::Files_io )
+    EVT_TOOL( ID_GERBVIEW_RELOAD_ALL, GERBVIEW_FRAME::Files_io )
     EVT_TOOL( ID_GERBVIEW_LOAD_DRILL_FILE, GERBVIEW_FRAME::Files_io )
     EVT_TOOL( ID_GERBVIEW_LOAD_ZIP_ARCHIVE_FILE, GERBVIEW_FRAME::Files_io )
     EVT_TOOL( ID_GERBVIEW_LOAD_JOB_FILE, GERBVIEW_FRAME::Files_io )

gerbview/files.cpp

@@ -120,6 +120,32 @@ void GERBVIEW_FRAME::Files_io( wxCommandEvent& event )
         ClearMsgPanel();
         break;
 
+    case ID_GERBVIEW_RELOAD_ALL:
+    {
+        // Store filenames
+        wxArrayString listOfFilenames;
+        listOfFilenames.Empty();
+        for( unsigned i = 0; i < GetImagesList()->ImagesMaxCount(); i++ )
+        {
+            if( GetImagesList()->GetGbrImage( i ) != nullptr )
+            {
+                if( GetImagesList()->GetGbrImage( i )->m_InUse == 1 )
+                    listOfFilenames.Add( GetImagesList()->GetGbrImage( i )->m_FileName );
+            }
+        }
+
+        // Clear all layers
+        Clear_DrawLayers( false );
+        Zoom_Automatique( false );
+        m_canvas->Refresh();
+        ClearMsgPanel();
+
+        // Load the layers from stored paths
+        wxBusyCursor wait;
+        loadListOfGerberFiles( wxEmptyString, listOfFilenames );
+    }
+    break;
+
     case ID_GERBVIEW_LOAD_DRILL_FILE:
         LoadExcellonFiles( wxEmptyString );
         m_canvas->Refresh();

gerbview/gerbview_id.h

@@ -45,6 +45,7 @@ enum gerbview_ids
     ID_GERBVIEW_LOAD_JOB_FILE,
     ID_GERBVIEW_LOAD_ZIP_ARCHIVE_FILE,
     ID_GERBVIEW_ERASE_ALL,
+    ID_GERBVIEW_RELOAD_ALL,
     ID_TOOLBARH_GERBER_SELECT_ACTIVE_DCODE,
     ID_GERBVIEW_SHOW_SOURCE,
     ID_GERBVIEW_EXPORT_TO_PCBNEW,

gerbview/menubar.cpp

@@ -145,6 +145,13 @@ void GERBVIEW_FRAME::ReCreateMenuBar()
                  _( "Clear all layers. All data will be deleted" ),
                  KiBitmap( delete_gerber_xpm ) );
 
+    // Reload all
+    AddMenuItem( fileMenu,
+                 ID_GERBVIEW_RELOAD_ALL,
+                 _( "Reload All Layers" ),
+                 _( "Reload all layers. All data will be reloaded" ),
+                 KiBitmap( reload2_xpm ) );
+
     // Separator
     fileMenu->AppendSeparator();
 

gerbview/toolbars_gerber.cpp

@@ -56,6 +56,10 @@ void GERBVIEW_FRAME::ReCreateHToolbar( void )
                             KiScaledBitmap( delete_gerber_xpm, this ),
                             _( "Clear all layers" ) );
 
+    m_mainToolBar->AddTool( ID_GERBVIEW_RELOAD_ALL, wxEmptyString,
+                            KiScaledBitmap( reload2_xpm, this ),
+                            _( "Reload all layers" ) );
+
     m_mainToolBar->AddTool( wxID_FILE, wxEmptyString, KiScaledBitmap( load_gerber_xpm, this ),
                             _( "Open Gerber file(s) on the current layer. Previous data will be deleted" ) );