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 void wxPanel::Init()
  44 {
  45     m_winLastFocused = (wxWindow *)NULL;
  46     m_btnDefault = (wxButton *)NULL;
  47 }
  48
  49 bool wxPanel::Create(wxWindow *parent, wxWindowID id,
  50                      const wxPoint& pos,
  51                      const wxSize& size,
  52                      long style,
  53                      const wxString& name)
  54 {
  55     bool ret = wxWindow::Create(parent, id, pos, size, style, name);
  56
  57     if ( ret )
  58     {
  59 #ifndef __WXGTK__
  60         SetBackgroundColour(wxSystemSettings::GetSystemColour(wxSYS_COLOUR_3DFACE));
  61         SetFont(wxSystemSettings::GetSystemFont(wxSYS_DEFAULT_GUI_FONT));
  62 #endif
  63     }
  64
  65     return ret;
  66 }
  67
  68 void wxPanel::InitDialog(void)
  69 {
  70     wxInitDialogEvent event(GetId());
  71     event.SetEventObject(this);
  72     GetEventHandler()->ProcessEvent(event);
  73 }
  74
  75 // Responds to colour changes, and passes event on to children.
  76 void wxPanel::OnSysColourChanged(wxSysColourChangedEvent& event)
  77 {
  78     SetBackgroundColour(wxSystemSettings::GetSystemColour(wxSYS_COLOUR_3DFACE));
  79     Refresh();
  80
  81     // Propagate the event to the non-top-level children
  82     wxWindow::OnSysColourChanged(event);
  83 }
  84
  85 void wxPanel::OnNavigationKey( wxNavigationKeyEvent& event )
  86 {
  87     // there is not much to do if we have only one child (or not at all)
  88     if (GetChildren().GetCount() < 2)
  89     {
  90         event.Skip();
  91         return;
  92     }
  93
  94     // don't process these ones here
  95     if (event.IsWindowChange())
  96     {
  97         event.Skip();
  98         return;
  99     }
 100
 101     wxWindow *winFocus = event.GetCurrentFocus();
 102     if (!winFocus)
 103         winFocus = wxWindow::FindFocus();
 104
 105     if (!winFocus)
 106     {
 107         event.Skip();
 108         return;
 109     }
 110
 111     wxWindowList::Node *start_node = GetChildren().Find( winFocus );
 112     if (!start_node)
 113         start_node = GetChildren().GetFirst();
 114
 115     wxWindowList::Node *node = event.GetDirection() ? start_node->GetNext()
 116                                                     : start_node->GetPrevious();
 117
 118     while (node != start_node)
 119     {
 120         if (!node)
 121         {
 122             node = event.GetDirection() ? GetChildren().GetFirst()
 123                                         : GetChildren().GetLast();
 124
 125             continue;
 126         }
 127
 128         wxWindow *child = node->GetData();
 129
 130         if (child->AcceptsFocus())
 131         {
 132             // ok, event processed
 133             child->SetFocus();
 134             return;
 135         }
 136
 137         node = event.GetDirection() ? node->GetNext() : node->GetPrevious();
 138     }
 139
 140     // we cycled through all of our children and none of them wanted to accept
 141     // focus
 142     event.Skip();
 143 }
 144
 145 void wxPanel::OnFocus(wxFocusEvent& event)
 146 {
 147     if ( m_winLastFocused )
 148     {
 149         // it might happen that the window got reparented...
 150         if ( m_winLastFocused->GetParent() != this )
 151             m_winLastFocused = (wxWindow *)NULL;
 152         else
 153             m_winLastFocused->SetFocus();
 154     }
 155     else
 156         event.Skip();
 157 }