src/generic/panelg.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        panelg.cpp
   3 // Purpose:     wxPanel
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     04/01/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart and Markus Holzem
   9 // Licence:           wxWindows license
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifdef __GNUG__
  13 #pragma implementation "panelg.h"
  14 #endif
  15
  16 // For compilers that support precompilation, includes "wx.h".
  17 #include "wx/wxprec.h"
  18
  19 #ifdef __BORLANDC__
  20 #pragma hdrstop
  21 #endif
  22
  23 #ifndef WX_PRECOMP
  24 #include "wx/object.h"
  25 #include "wx/font.h"
  26 #include "wx/colour.h"
  27 #include "wx/settings.h"
  28 #endif
  29
  30 #include "wx/generic/panelg.h"
  31
  32 #if !USE_SHARED_LIBRARY
  33 IMPLEMENT_DYNAMIC_CLASS(wxPanel, wxWindow)
  34
  35 BEGIN_EVENT_TABLE(wxPanel, wxWindow)
  36   EVT_SYS_COLOUR_CHANGED(wxPanel::OnSysColourChanged)
  37   EVT_SET_FOCUS(wxPanel::OnFocus)
  38   EVT_NAVIGATION_KEY(wxPanel::OnNavigationKey)
  39 END_EVENT_TABLE()
  40
  41 #endif
  42
  43 wxPanel::wxPanel()
  44 {
  45     m_lastFocus = NULL;
  46 }
  47
  48 bool wxPanel::Create(wxWindow *parent, wxWindowID id,
  49                      const wxPoint& pos,
  50                      const wxSize& size,
  51                      long style,
  52                      const wxString& name)
  53 {
  54     m_lastFocus = NULL;
  55
  56     bool ret = wxWindow::Create(parent, id, pos, size, style, name);
  57
  58     if ( ret )
  59     {
  60 #ifndef __WXGTK__
  61         SetBackgroundColour(wxSystemSettings::GetSystemColour(wxSYS_COLOUR_3DFACE));
  62         SetFont(wxSystemSettings::GetSystemFont(wxSYS_DEFAULT_GUI_FONT));
  63 #endif
  64     }
  65
  66     return ret;
  67 }
  68
  69 void wxPanel::InitDialog(void)
  70 {
  71     wxInitDialogEvent event(GetId());
  72     event.SetEventObject(this);
  73     GetEventHandler()->ProcessEvent(event);
  74 }
  75
  76 // Responds to colour changes, and passes event on to children.
  77 void wxPanel::OnSysColourChanged(wxSysColourChangedEvent& event)
  78 {
  79     SetBackgroundColour(wxSystemSettings::GetSystemColour(wxSYS_COLOUR_3DFACE));
  80     Refresh();
  81
  82     // Propagate the event to the non-top-level children
  83     wxWindow::OnSysColourChanged(event);
  84 }
  85
  86 void wxPanel::OnNavigationKey( wxNavigationKeyEvent& event )
  87 {
  88     // there is not much to do if we have only one child (or not at all)
  89     if (GetChildren().GetCount() < 2)
  90     {
  91         event.Skip();
  92         return;
  93     }
  94
  95     // don't process these ones here
  96     if (event.IsWindowChange())
  97     {
  98         event.Skip();
  99         return;
 100     }
 101
 102     wxWindow *winFocus = event.GetCurrentFocus();
 103     if (!winFocus)
 104         winFocus = wxWindow::FindFocus();
 105
 106     if (!winFocus)
 107     {
 108         event.Skip();
 109         return;
 110     }
 111
 112     wxNode *start_node = GetChildren().Find( winFocus );
 113     if (!start_node)
 114         start_node = GetChildren().First();
 115
 116     wxNode *node = event.GetDirection() ? start_node->Next()
 117                                         : start_node->Previous();
 118
 119     while (node != start_node)
 120     {
 121         if (!node)
 122         {
 123 #ifndef __WXGTK__
 124      // FIXME seems to enter in an infinite loop - how is this possible?
 125             // we arrived at the last/first of our children - but may be this
 126             // panel is inside another panel, so make focus go to the next/prev
 127             // control in the parent (if we have one)
 128             if (GetParent() != NULL)
 129             {
 130                 wxNavigationKeyEvent new_event;
 131                 new_event.SetDirection( event.GetDirection() );
 132                 new_event.SetWindowChange(FALSE);
 133                 new_event.SetCurrentFocus( this );
 134
 135                 if (GetParent()->GetEventHandler()->ProcessEvent(new_event))
 136                 {
 137                     return;
 138                 }
 139             }
 140 #endif
 141
 142             node = event.GetDirection() ? GetChildren().First()
 143                                         : GetChildren().Last();
 144
 145         }
 146
 147         wxWindow *child = (wxWindow *)node->Data();
 148
 149         if (child->AcceptsFocus())
 150         {
 151             // ok, event processed
 152             child->SetFocus();
 153             return;
 154         }
 155
 156         node = event.GetDirection() ? node->Next() : node->Previous();
 157     }
 158
 159     // we cycled through all of our children and none of them wanted to accept
 160     // focus
 161     event.Skip();
 162 }
 163
 164 void wxPanel::OnFocus(wxFocusEvent& event)
 165 {
 166     if ( m_lastFocus )
 167         m_lastFocus->SetFocus();
 168     else
 169         event.Skip();
 170 }