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/settings.h"
  25 #endif
  26
  27 #include "wx/generic/panelg.h"
  28
  29 #if !USE_SHARED_LIBRARY
  30 IMPLEMENT_DYNAMIC_CLASS(wxPanel, wxWindow)
  31
  32 BEGIN_EVENT_TABLE(wxPanel, wxWindow)
  33   EVT_SYS_COLOUR_CHANGED(wxPanel::OnSysColourChanged)
  34   EVT_NAVIGATION_KEY(wxPanel::OnNavigationKey)
  35 END_EVENT_TABLE()
  36
  37 #endif
  38
  39 wxPanel::wxPanel()
  40 {
  41 }
  42
  43 bool wxPanel::Create(wxWindow *parent, wxWindowID id,
  44                      const wxPoint& pos,
  45                      const wxSize& size,
  46                      long style,
  47                      const wxString& name)
  48 {
  49   bool ret = wxWindow::Create(parent, id, pos, size, style, name);
  50
  51   if ( ret ) {
  52     SetBackgroundColour(wxSystemSettings::GetSystemColour(wxSYS_COLOUR_3DFACE));
  53     SetDefaultBackgroundColour(wxSystemSettings::GetSystemColour(wxSYS_COLOUR_3DFACE));
  54     SetFont(wxSystemSettings::GetSystemFont(wxSYS_DEFAULT_GUI_FONT));
  55   }
  56
  57   return ret;
  58 }
  59
  60 void wxPanel::InitDialog(void)
  61 {
  62         wxInitDialogEvent event(GetId());
  63         event.SetEventObject(this);
  64         GetEventHandler()->ProcessEvent(event);
  65 }
  66
  67 void wxPanel::SetFocus()
  68 {
  69   SetFocusToNextChild();
  70 }
  71
  72 // Responds to colour changes, and passes event on to children.
  73 void wxPanel::OnSysColourChanged(wxSysColourChangedEvent& event)
  74 {
  75     SetBackgroundColour(wxSystemSettings::GetSystemColour(wxSYS_COLOUR_3DFACE));
  76     SetDefaultBackgroundColour(wxSystemSettings::GetSystemColour(wxSYS_COLOUR_3DFACE));
  77     Refresh();
  78
  79     // Propagate the event to the non-top-level children
  80     wxWindow::OnSysColourChanged(event);
  81 }
  82
  83 void wxPanel::OnNavigationKey(wxNavigationKeyEvent& event)
  84 {
  85   // don't process these ones here
  86   if ( event.IsWindowChange() ) {
  87     event.Skip();
  88     return;
  89   }
  90
  91   // first of all, find the window which currently has the focus
  92   wxNode *node = GetChildren()->First();
  93   wxWindow *winFocus = event.GetCurrentFocus();
  94   if ( winFocus == NULL )
  95     winFocus = wxWindow::FindFocus();
  96   while ( node != NULL ) {
  97     if ( node->Data() == winFocus )
  98       break;
  99
 100     node = node->Next();
 101   }
 102
 103   if ( !SetFocusToNextChild(node, event.GetDirection()) )
 104     event.Skip();
 105 }
 106
 107 // set focus to the next child which accepts it (or first/last if node == NULL)
 108 bool wxPanel::SetFocusToNextChild(wxNode *node, bool bForward)
 109 {
 110   // @@ using typed list would be better...
 111   #define WIN(node) ((wxWindow *)(node->Data()))
 112
 113   bool bFound = FALSE;  // have we found a window we will set focus to?
 114
 115   wxList *children = GetChildren();
 116   if ( node == NULL ) {
 117     // we've never had focus before
 118     node = bForward ? children->First() : children->Last();
 119     if ( node == NULL ) {
 120       // no children
 121       return FALSE;
 122     }
 123
 124     bFound = WIN(node)->AcceptsFocus();
 125   }
 126   else {
 127     // just to be sure it's the right one
 128     wxASSERT( WIN(node)->AcceptsFocus() );
 129   }
 130
 131   // find the next child which accepts focus
 132   while ( !bFound ) {
 133     node = bForward ? node->Next() : node->Previous();
 134     if ( node == NULL ) {
 135       // ask parent if he doesn't want to advance focus to the next panel
 136       if ( GetParent() != NULL ) {
 137         wxNavigationKeyEvent event;
 138         event.SetDirection(bForward);
 139         event.SetWindowChange(FALSE);
 140         event.SetCurrentFocus(this);
 141
 142         if ( GetParent()->ProcessEvent(event) )
 143           return TRUE;
 144       }
 145
 146       // wrap around
 147       node = bForward ? children->First() : children->Last();
 148     }
 149
 150     bFound = WIN(node)->AcceptsFocus();
 151   }
 152
 153   WIN(node)->SetFocus();
 154
 155   #undef WIN
 156
 157   return TRUE;
 158 }