Improve text alignment in grids and one-line Scintilla controls.

Fixes https://gitlab.com/kicad/code/kicad/-/issues/16685

common/widgets/grid_text_helpers.cpp

@@ -47,8 +47,8 @@ void GRID_CELL_TEXT_EDITOR::StartingKey( wxKeyEvent& event )
 {
     if( m_validator )
     {
-        m_validator.get()->SetWindow( Text() );
-        m_validator.get()->ProcessEvent( event );
+        m_validator->SetWindow( Text() );
+        m_validator->ProcessEvent( event );
     }
 
     if( event.GetSkipped() )
@@ -66,9 +66,12 @@ void GRID_CELL_TEXT_EDITOR::SetSize( const wxRect& aRect )
 
 #if defined( __WXMSW__ )
     rect.Offset( 0, 1 );
+#elif defined( __WXMAC__ )
+    rect.Offset( 0, 2 );
+    rect.SetHeight( rect.GetHeight() - 4 );
 #endif
 
-    wxGridCellEditor::SetSize( rect );
+    wxGridCellEditor::SetSize( rect );      // NOLINT(*-parent-virtual-call)
 }
 
 
@@ -125,7 +128,10 @@ void GRID_CELL_STC_EDITOR::SetSize( const wxRect& aRect )
 #if defined( __WXMSW__ )
     rect.Offset( -1, 1 );
 #elif defined( __WXGTK__ )
-    rect.Offset( -1, 3 );
+    rect.Offset( -1, 1 );
+#else
+    rect.Offset( 1, 3 );
+    rect.SetHeight( rect.GetHeight() - 6 );
 #endif
 
     wxGridCellEditor::SetSize( rect );
@@ -137,6 +143,11 @@ void GRID_CELL_STC_EDITOR::Create( wxWindow* aParent, wxWindowID aId, wxEvtHandl
     m_control = new wxStyledTextCtrl( aParent, wxID_ANY, wxDefaultPosition, wxSize( 0, 0 ),
                                       wxBORDER_NONE );
 
+#ifdef __WXGTK__
+    stc_ctrl()->SetExtraAscent( 6 );
+    stc_ctrl()->SetExtraDescent( 2 );
+#endif
+
     stc_ctrl()->SetTabIndents( false );
     stc_ctrl()->SetBackSpaceUnIndents( false );
     stc_ctrl()->SetViewEOL( false );

eeschema/dialogs/dialog_field_properties.cpp

@@ -76,6 +76,14 @@ DIALOG_FIELD_PROPERTIES::DIALOG_FIELD_PROPERTIES( SCH_BASE_FRAME* aParent, const
 
     m_StyledTextCtrl->SetEOLMode( wxSTC_EOL_LF );   // Normalize EOL across platforms
 
+#ifdef __WXGTK__
+    m_StyledTextCtrl->SetExtraAscent( 6 );
+    m_StyledTextCtrl->SetExtraDescent( 2 );
+#else
+    m_StyledTextCtrl->SetExtraAscent( 1 );
+    m_StyledTextCtrl->SetExtraDescent( 2 );
+#endif
+
 #ifdef _WIN32
     // Without this setting, on Windows, some esoteric unicode chars create display issue
     // in a wxStyledTextCtrl.