KiCad PCB EDA Suite
eda_view_switcher.cpp
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23 
25 
26 
27 #ifdef __WXGTK__
28 #define LIST_BOX_H_PADDING 20
29 #define LIST_BOX_V_PADDING 8
30 #else
31 #define LIST_BOX_H_PADDING 10
32 #define LIST_BOX_V_PADDING 5
33 #endif
34 
35 
36 EDA_VIEW_SWITCHER::EDA_VIEW_SWITCHER( wxWindow* aParent, const wxArrayString& aItems ) :
37  EDA_VIEW_SWITCHER_BASE( aParent ),
38  m_tabState( true ),
39  m_receivingEvents( false )
40 {
41  m_listBox->InsertItems( aItems, 0 );
42  m_listBox->SetSelection( std::min( 1, (int) m_listBox->GetCount() - 1 ) );
43 
44  int width = 0;
45  int height = 0;
46 
47  for( const wxString& item : aItems )
48  {
49  wxSize extents = m_listBox->GetTextExtent( item );
50  width = std::max( width, extents.x );
51  height += extents.y + LIST_BOX_V_PADDING;
52  }
53 
54  m_listBox->SetMinSize( wxSize( width + LIST_BOX_H_PADDING, height ) );
56 
57  // this line fixes an issue on Linux Ubuntu using Unity (dialog not shown),
58  // and works fine on all systems
59  GetSizer()->Fit( this );
60 
61  Centre();
62 }
63 
64 
65 bool EDA_VIEW_SWITCHER::Show( bool aShow )
66 {
67  if( !aShow )
68  m_receivingEvents = false;
69 
70  bool ret = DIALOG_SHIM::Show( aShow );
71 
72  if( aShow )
73  {
74  m_receivingEvents = true;
75 
76  // Force the dialog to always be centered over the window
77  Centre();
78  }
79 
80  return ret;
81 }
82 
83 
84 // OK, this is *really* annoying, but wxWidgets doesn't give us key-down events while the
85 // control key is being held down. So we can't use OnKeyDown() or OnCharHook() and instead
86 // must rely on watching key states in TryBefore().
87 //
88 // Just checking the state of the tab key is tempting, but then we'll think it's been hit
89 // several times when it's actually just a key-down followed by a redraw or idle event.
90 //
91 // So we have to keep a state machine of the tab key.
92 //
93 bool EDA_VIEW_SWITCHER::TryBefore( wxEvent& aEvent )
94 {
95  if( !m_receivingEvents )
96  {
97  return DIALOG_SHIM::TryBefore( aEvent );
98  }
99 
100  // Check for tab key leading edge
101  if( !m_tabState && wxGetKeyState( WXK_TAB ) )
102  {
103  m_tabState = true;
104 
105  int idx = m_listBox->GetSelection();
106 
107  if( wxGetKeyState( WXK_SHIFT ) )
108  {
109  if( --idx < 0 )
110  m_listBox->SetSelection( (int) m_listBox->GetCount() - 1 );
111  else
112  m_listBox->SetSelection( idx );
113  }
114  else
115  {
116  if( ++idx >= (int) m_listBox->GetCount() )
117  m_listBox->SetSelection( 0 );
118  else
119  m_listBox->SetSelection( idx );
120  }
121 
122  return true;
123  }
124 
125  // Check for tab key trailing edge
126  if( m_tabState && !wxGetKeyState( WXK_TAB ) )
127  {
128  m_tabState = false;
129  }
130 
131  // Check for control key trailing edge
132  if( !wxGetKeyState( WXK_RAW_CONTROL ) )
133  {
134  wxPostEvent( this, wxCommandEvent( wxEVT_COMMAND_BUTTON_CLICKED, wxID_OK ) );
135  }
136 
137  return DIALOG_SHIM::TryBefore( aEvent );
138 }
EDA_VIEW_SWITCHER(wxWindow *aParent, const wxArrayString &aItems)
#define LIST_BOX_H_PADDING
Class EDA_VIEW_SWITCHER_BASE.
bool TryBefore(wxEvent &aEvent) override
void SetInitialFocus(wxWindow *aWindow)
Sets the window (usually a wxTextCtrl) that should be focused when the dialog is shown.
Definition: dialog_shim.h:97
#define LIST_BOX_V_PADDING
bool Show(bool show) override
bool Show(bool show) override