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C/C++ Source or Header  |  2002-08-30  |  6KB  |  218 lines
  1. /////////////////////////////////////////////////////////////////////////////
  2. // Name:        radiobut.cpp
  3. // Purpose:     wxRadioButton
  4. // Author:      David Webster
  5. // Modified by:
  6. // Created:     10/12/99
  7. // RCS-ID:      $Id: RADIOBUT.CPP,v 1.16 2002/08/30 13:37:08 DW Exp $
  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
  218.