Units for footprint preview widgets.

common/widgets/footprint_preview_widget.cpp

@@ -86,6 +86,12 @@ void FOOTPRINT_PREVIEW_WIDGET::ClearStatus()
 }
 
 
+void FOOTPRINT_PREVIEW_WIDGET::SetUserUnits( EDA_UNITS aUnits )
+{
+    m_prev_panel->SetUserUnits( aUnits );
+}
+
+
 void FOOTPRINT_PREVIEW_WIDGET::DisplayFootprint( const LIB_ID& aFPID )
 {
     if( !m_prev_panel || m_libid == aFPID )

eeschema/dialogs/dialog_choose_symbol.cpp

@@ -305,6 +305,7 @@ wxPanel* DIALOG_CHOOSE_SYMBOL::ConstructRightPanel( wxWindow* aParent )
                 m_fp_sel_ctrl = new FOOTPRINT_SELECT_WIDGET( m_parent, panel, fp_list, true );
 
             m_fp_preview = new FOOTPRINT_PREVIEW_WIDGET( panel, Kiway() );
+            m_fp_preview->SetUserUnits( GetUserUnits() );
         }
 
         if( m_fp_sel_ctrl )

include/widgets/footprint_preview_widget.h

@@ -1,7 +1,7 @@
 /*
  * This program source code file is part of KiCad, a free EDA CAD application.
  *
- * Copyright (C) 2017-2021 KiCad Developers, see AUTHORS.txt for contributors.
+ * Copyright (C) 2017-2023 KiCad Developers, see AUTHORS.txt for contributors.
  * Copyright (C) 2017 Chris Pavlina <pavlina.chris@gmail.com>
  *
  * This program is free software: you can redistribute it and/or modify it
@@ -25,10 +25,9 @@
 #include <functional>
 #include <import_export.h>
 #include <lib_id.h>
-
+#include <eda_units.h>
 #include <gal/color4d.h>
 
-class FOOTPRINT_LOAD_EVENT;
 class FOOTPRINT_PREVIEW_PANEL_BASE;
 class KIWAY;
 class wxStaticText;
@@ -64,6 +63,11 @@ public:
      */
     void ClearStatus();
 
+    /**
+     * Set the units for the preview.
+     */
+    void SetUserUnits( EDA_UNITS aUnits );
+
     /**
      * Set the currently displayed footprint. Any footprint passed in here
      * must have been passed to CacheFootprint before.
@@ -73,12 +77,11 @@ public:
 private:
     FOOTPRINT_PREVIEW_PANEL_BASE* m_prev_panel;
 
-    wxStaticText* m_status;
+    wxStaticText*                 m_status;
-    wxPanel*      m_statusPanel;
+    wxPanel*                      m_statusPanel;
-    wxSizer*      m_statusSizer;
+    wxSizer*                      m_statusSizer;
-    wxSizer*      m_outerSizer;
+    wxSizer*                      m_outerSizer;
-    LIB_ID        m_libid;
+    LIB_ID                        m_libid;
-
 };
 
 
@@ -91,6 +94,8 @@ class APIEXPORT FOOTPRINT_PREVIEW_PANEL_BASE
 public:
     virtual ~FOOTPRINT_PREVIEW_PANEL_BASE() {}
 
+    virtual void SetUserUnits( EDA_UNITS aUnits ) = 0;
+
     /**
      * Set the currently displayed footprint. Any footprint passed in here
      * must have been passed to CacheFootprint before.

pcbnew/dialogs/dialog_choose_footprint.cpp

@@ -174,6 +174,7 @@ wxPanel* DIALOG_CHOOSE_FOOTPRINT::ConstructRightPanel( wxWindow* aParent )
     auto sizer = new wxBoxSizer( wxVERTICAL );
 
     m_preview_ctrl = new FOOTPRINT_PREVIEW_WIDGET( panel, Kiway() );
+    m_preview_ctrl->SetUserUnits( GetUserUnits() );
     sizer->Add( m_preview_ctrl, 1, wxEXPAND | wxTOP | wxRIGHT, 5 );
 
     panel->SetSizer( sizer );

pcbnew/footprint_preview_panel.cpp

@@ -26,6 +26,7 @@
 #include <base_units.h>
 #include <board.h>
 #include <footprint.h>
+#include <pcb_dimension.h>
 #include <eda_draw_frame.h>
 #include <footprint_preview_panel.h>
 #include <fp_lib_table.h>
@@ -107,6 +108,25 @@ void FOOTPRINT_PREVIEW_PANEL::renderFootprint( std::shared_ptr<FOOTPRINT> aFootp
 
     m_currentFootprint->SetParent( m_dummyBoard.get() );
 
+    INSPECTOR_FUNC inspector =
+            [&]( EDA_ITEM* descendant, void* aTestData )
+            {
+                PCB_DIMENSION_BASE* dimension = static_cast<PCB_DIMENSION_BASE*>( descendant );
+
+                if( dimension->GetUnitsMode() == DIM_UNITS_MODE::AUTOMATIC )
+                {
+                    dimension->SetUnits( m_userUnits );
+                    dimension->Update();
+                }
+
+                return INSPECT_RESULT::CONTINUE;
+            };
+
+    m_currentFootprint->Visit( inspector, nullptr, { PCB_FP_DIM_LEADER_T,
+                                                     PCB_FP_DIM_ORTHOGONAL_T,
+                                                     PCB_FP_DIM_CENTER_T,
+                                                     PCB_FP_DIM_RADIAL_T } );
+
     // Ensure we are not using the high contrast mode to display the selected footprint
     KIGFX::PAINTER* painter = GetView()->GetPainter();
     auto settings = static_cast<KIGFX::PCB_RENDER_SETTINGS*>( painter->GetSettings() );
@@ -139,7 +159,8 @@ bool FOOTPRINT_PREVIEW_PANEL::DisplayFootprint( const LIB_ID& aFPID )
 
     try
     {
-        const FOOTPRINT* fp = fptbl->GetEnumeratedFootprint( aFPID.GetLibNickname(), aFPID.GetLibItemName() );
+        const FOOTPRINT* fp = fptbl->GetEnumeratedFootprint( aFPID.GetLibNickname(),
+                                                             aFPID.GetLibItemName() );
 
         if( fp )
             m_currentFootprint.reset( static_cast<FOOTPRINT*>( fp->Duplicate() ) );

pcbnew/footprint_preview_panel.h

@@ -53,6 +53,7 @@ public:
 
     virtual ~FOOTPRINT_PREVIEW_PANEL( );
 
+    virtual void SetUserUnits( EDA_UNITS aUnits ) override { m_userUnits = aUnits; }
     virtual bool DisplayFootprint( const LIB_ID& aFPID ) override;
 
     virtual const KIGFX::COLOR4D& GetBackgroundColor() const override;
@@ -81,6 +82,7 @@ private:
 private:
     std::unique_ptr<BOARD>                      m_dummyBoard;
     std::unique_ptr<KIGFX::GAL_DISPLAY_OPTIONS> m_displayOptions;
+    EDA_UNITS                                   m_userUnits;
     std::shared_ptr<FOOTPRINT>                  m_currentFootprint;
 };