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