src/os2/radiobut.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        radiobut.cpp
   3 // Purpose:     wxRadioButton
   4 // Author:      David Webster
   5 // Modified by:
   6 // Created:     10/12/99
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) David Webster
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // For compilers that support precompilation, includes "wx.h".
  13 #include "wx/wxprec.h"
  14
  15 #ifdef __BORLANDC__
  16 #pragma hdrstop
  17 #endif
  18
  19 #ifndef WX_PRECOMP
  20 #include <stdio.h>
  21 #include "wx/setup.h"
  22 #include "wx/radiobut.h"
  23 #include "wx/brush.h"
  24 #endif
  25
  26 #include "wx/os2/private.h"
  27
  28 IMPLEMENT_DYNAMIC_CLASS(wxRadioButton, wxControl)
  29
  30 void wxRadioButton::Init()
  31 {
  32     m_bFocusJustSet = FALSE;
  33 } // end of wxRadioButton::Init
  34
  35 void wxRadioButton::Command (
  36   wxCommandEvent&                   rEvent
  37 )
  38 {
  39     SetValue ((rEvent.GetInt() != 0) );
  40     ProcessCommand (rEvent);
  41 } // end of wxRadioButton::Command
  42
  43 bool wxRadioButton::Create(
  44   wxWindow*                         pParent
  45 , wxWindowID                        vId
  46 , const wxString&                   rsLabel
  47 , const wxPoint&                    rPos
  48 , const wxSize&                     rSize
  49 , long                              lStyle
  50 #if wxUSE_VALIDATORS
  51 , const wxValidator&                rValidator
  52 #endif
  53 , const wxString&                   rsName
  54 )
  55 {
  56     if ( !CreateControl( pParent
  57                         ,vId
  58                         ,rPos
  59                         ,rSize
  60                         ,lStyle
  61 #if wxUSE_VALIDATORS
  62                         ,rValidator
  63 #endif
  64                         ,rsName))
  65         return FALSE;
  66
  67     long                            lSstyle = HasFlag(wxRB_GROUP) ? WS_GROUP : 0;
  68
  69     lSstyle |= BS_AUTORADIOBUTTON;
  70
  71     if (HasFlag(wxCLIP_SIBLINGS))
  72         lSstyle |= WS_CLIPSIBLINGS;
  73
  74     if (!OS2CreateControl( _T("BUTTON")
  75                           ,lSstyle
  76                           ,rPos
  77                           ,rSize
  78                           ,rsLabel
  79                           ,0
  80                          ))
  81         return FALSE;
  82
  83     if (HasFlag(wxRB_GROUP))
  84         SetValue(TRUE);
  85
  86     SetFont(*wxSMALL_FONT);
  87     SetSize( rPos.x
  88             ,rPos.y
  89             ,rSize.x
  90             ,rSize.y
  91            );
  92     return TRUE;
  93 } // end of wxRadioButton::Create
  94
  95 wxSize wxRadioButton::DoGetBestSize() const
  96 {
  97     static int                      snRadioSize = 0;
  98
  99     if (!snRadioSize)
 100     {
 101         wxScreenDC                  vDC;
 102
 103         vDC.SetFont(wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT));
 104         snRadioSize = vDC.GetCharHeight();
 105     }
 106
 107     wxString                        sStr = GetLabel();
 108     int                             nRadioWidth;
 109     int                             nRadioHeight;
 110
 111     if (!sStr.empty())
 112     {
 113         GetTextExtent( sStr
 114                       ,&nRadioWidth
 115                       ,&nRadioHeight
 116                      );
 117         nRadioWidth += snRadioSize + GetCharWidth();
 118         if (nRadioHeight < snRadioSize)
 119             nRadioHeight = snRadioSize;
 120     }
 121     else
 122     {
 123         nRadioWidth  = snRadioSize;
 124         nRadioHeight = snRadioSize;
 125     }
 126     return wxSize( nRadioWidth
 127                   ,nRadioHeight
 128                  );
 129 } // end of wxRadioButton::DoGetBestSize
 130
 131 //
 132 // Get single selection, for single choice list items
 133 //
 134 bool wxRadioButton::GetValue() const
 135 {
 136     return((::WinSendMsg((HWND) GetHWND(), BM_QUERYCHECK, (MPARAM)0L, (MPARAM)0L) != 0));
 137 } // end of wxRadioButton::GetValue
 138
 139 bool wxRadioButton::OS2Command(
 140   WXUINT                            wParam
 141 , WXWORD                            wId
 142 )
 143 {
 144     if (wParam == BN_CLICKED)
 145     {
 146         wxCommandEvent              rEvent( wxEVT_COMMAND_RADIOBUTTON_SELECTED
 147                                            ,m_windowId
 148                                           );
 149
 150         rEvent.SetEventObject(this);
 151         ProcessCommand(rEvent);
 152         return TRUE;
 153     }
 154     else
 155         return FALSE;
 156 } // end of wxRadioButton::OS2Command
 157
 158 void wxRadioButton::SetFocus()
 159 {
 160     // when the radio button receives a WM_SETFOCUS message it generates a
 161     // BN_CLICKED which is totally unexpected and leads to catastrophic results
 162     // if you pop up a dialog from the radio button event handler as, when the
 163     // dialog is dismissed, the focus is returned to the radio button which
 164     // generates BN_CLICKED which leads to showing another dialog and so on
 165     // without end!
 166     //
 167     // to aviod this, we drop the pseudo BN_CLICKED events generated when the
 168     // button gains focus
 169     m_bFocusJustSet = TRUE;
 170
 171     wxControl::SetFocus();
 172 }
 173
 174 void wxRadioButton::SetLabel(
 175   const wxString&                   rsLabel
 176 )
 177 {
 178     ::WinSetWindowText((HWND)GetHWND(), (const char *)rsLabel.c_str());
 179 } // end of wxRadioButton::SetLabel
 180
 181 void wxRadioButton::SetValue(
 182   bool                              bValue
 183 )
 184 {
 185     ::WinSendMsg((HWND)GetHWND(), BM_SETCHECK, (MPARAM)bValue, (MPARAM)0);
 186 } // end of wxRadioButton::SetValue
 187