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 #include "wx/dcscreen.h"
  25 #include "wx/settings.h"
  26 #endif
  27
  28 #include "wx/os2/private.h"
  29
  30 IMPLEMENT_DYNAMIC_CLASS(wxRadioButton, wxControl)
  31
  32 extern void  wxAssociateWinWithHandle( HWND         hWnd
  33                                       ,wxWindowOS2* pWin
  34                                      );
  35
  36 void wxRadioButton::Init()
  37 {
  38     m_bFocusJustSet = FALSE;
  39 } // end of wxRadioButton::Init
  40
  41 void wxRadioButton::Command (
  42   wxCommandEvent&                   rEvent
  43 )
  44 {
  45     SetValue ((rEvent.GetInt() != 0) );
  46     ProcessCommand (rEvent);
  47 } // end of wxRadioButton::Command
  48
  49 bool wxRadioButton::Create(
  50   wxWindow*                         pParent
  51 , wxWindowID                        vId
  52 , const wxString&                   rsLabel
  53 , const wxPoint&                    rPos
  54 , const wxSize&                     rSize
  55 , long                              lStyle
  56 #if wxUSE_VALIDATORS
  57 , const wxValidator&                rValidator
  58 #endif
  59 , const wxString&                   rsName
  60 )
  61 {
  62     if ( !CreateControl( pParent
  63                         ,vId
  64                         ,rPos
  65                         ,rSize
  66                         ,lStyle
  67 #if wxUSE_VALIDATORS
  68                         ,rValidator
  69 #endif
  70                         ,rsName))
  71         return FALSE;
  72
  73     long                            lSstyle = HasFlag(wxRB_GROUP) ? WS_GROUP : 0;
  74
  75     lSstyle |= BS_AUTORADIOBUTTON;
  76
  77     if (HasFlag(wxCLIP_SIBLINGS))
  78         lSstyle |= WS_CLIPSIBLINGS;
  79
  80     if (!OS2CreateControl( _T("BUTTON")
  81                           ,lSstyle
  82                           ,rPos
  83                           ,rSize
  84                           ,rsLabel
  85                           ,0
  86                          ))
  87         return FALSE;
  88
  89     wxAssociateWinWithHandle(m_hWnd, this);
  90     if (HasFlag(wxRB_GROUP))
  91         SetValue(TRUE);
  92
  93     SetFont(*wxSMALL_FONT);
  94     SetSize( rPos.x
  95             ,rPos.y
  96             ,rSize.x
  97             ,rSize.y
  98            );
  99     return TRUE;
 100 } // end of wxRadioButton::Create
 101
 102 wxSize wxRadioButton::DoGetBestSize() const
 103 {
 104     static int                      snRadioSize = 0;
 105
 106     if (!snRadioSize)
 107     {
 108         wxScreenDC                  vDC;
 109
 110         vDC.SetFont(wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT));
 111         snRadioSize = vDC.GetCharHeight();
 112     }
 113
 114     wxString                        sStr = GetLabel();
 115     int                             nRadioWidth;
 116     int                             nRadioHeight;
 117
 118     if (!sStr.empty())
 119     {
 120         GetTextExtent( sStr
 121                       ,&nRadioWidth
 122                       ,&nRadioHeight
 123                      );
 124         nRadioWidth += snRadioSize + GetCharWidth();
 125         if (nRadioHeight < snRadioSize)
 126             nRadioHeight = snRadioSize;
 127     }
 128     else
 129     {
 130         nRadioWidth  = snRadioSize;
 131         nRadioHeight = snRadioSize;
 132     }
 133     return wxSize( nRadioWidth
 134                   ,nRadioHeight
 135                  );
 136 } // end of wxRadioButton::DoGetBestSize
 137
 138 //
 139 // Get single selection, for single choice list items
 140 //
 141 bool wxRadioButton::GetValue() const
 142 {
 143     return((::WinSendMsg((HWND) GetHWND(), BM_QUERYCHECK, (MPARAM)0L, (MPARAM)0L) != 0));
 144 } // end of wxRadioButton::GetValue
 145
 146 bool wxRadioButton::OS2Command(
 147   WXUINT                            wParam
 148 , WXWORD                            wId
 149 )
 150 {
 151     if (wParam == BN_CLICKED)
 152     {
 153         wxCommandEvent              rEvent( wxEVT_COMMAND_RADIOBUTTON_SELECTED
 154                                            ,m_windowId
 155                                           );
 156
 157         rEvent.SetEventObject(this);
 158         ProcessCommand(rEvent);
 159         return TRUE;
 160     }
 161     else
 162         return FALSE;
 163 } // end of wxRadioButton::OS2Command
 164
 165 void wxRadioButton::SetFocus()
 166 {
 167     // when the radio button receives a WM_SETFOCUS message it generates a
 168     // BN_CLICKED which is totally unexpected and leads to catastrophic results
 169     // if you pop up a dialog from the radio button event handler as, when the
 170     // dialog is dismissed, the focus is returned to the radio button which
 171     // generates BN_CLICKED which leads to showing another dialog and so on
 172     // without end!
 173     //
 174     // to aviod this, we drop the pseudo BN_CLICKED events generated when the
 175     // button gains focus
 176     m_bFocusJustSet = TRUE;
 177
 178     wxControl::SetFocus();
 179 }
 180
 181 void wxRadioButton::SetLabel(
 182   const wxString&                   rsLabel
 183 )
 184 {
 185     ::WinSetWindowText((HWND)GetHWND(), (const char *)rsLabel.c_str());
 186 } // end of wxRadioButton::SetLabel
 187
 188 void wxRadioButton::SetValue(
 189   bool                              bValue
 190 )
 191 {
 192     ::WinSendMsg((HWND)GetHWND(), BM_SETCHECK, (MPARAM)bValue, (MPARAM)0);
 193 } // end of wxRadioButton::SetValue
 194
 195 MRESULT wxRadioButton::OS2WindowProc(
 196   WXUINT                            uMsg
 197 , WXWPARAM                          wParam
 198 , WXLPARAM                          lParam
 199 )
 200 {
 201     if (uMsg == WM_SETFOCUS)
 202     {
 203         m_bFocusJustSet = TRUE;
 204
 205         MRESULT                     mRc = wxControl::OS2WindowProc( uMsg
 206                                                                    ,wParam
 207                                                                    ,lParam
 208                                                                   );
 209
 210         m_bFocusJustSet = FALSE;
 211         return mRc;
 212     }
 213     return wxControl::OS2WindowProc( uMsg
 214                                     ,wParam
 215                                     ,lParam
 216                                    );
 217 } // end of wxRadioButton::OS2WindowProc