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     wxFont*                          pTextFont = new wxFont( 10
  89                                                             ,wxMODERN
  90                                                             ,wxNORMAL
  91                                                             ,wxNORMAL
  92                                                            );
  93     SetFont(*pTextFont);
  94     SetSize( rPos.x
  95             ,rPos.y
  96             ,rSize.x
  97             ,rSize.y
  98            );
  99     delete pTextFont;
 100     return TRUE;
 101 } // end of wxRadioButton::Create
 102
 103 wxSize wxRadioButton::DoGetBestSize() const
 104 {
 105     static int                      snRadioSize = 0;
 106
 107     if (!snRadioSize)
 108     {
 109         wxScreenDC                  vDC;
 110
 111         vDC.SetFont(wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT));
 112         snRadioSize = vDC.GetCharHeight();
 113     }
 114
 115     wxString                        sStr = GetLabel();
 116     int                             nRadioWidth;
 117     int                             nRadioHeight;
 118
 119     if (!sStr.empty())
 120     {
 121         GetTextExtent( sStr
 122                       ,&nRadioWidth
 123                       ,&nRadioHeight
 124                      );
 125         nRadioWidth += snRadioSize + GetCharWidth();
 126         if (nRadioHeight < snRadioSize)
 127             nRadioHeight = snRadioSize;
 128     }
 129     else
 130     {
 131         nRadioWidth  = snRadioSize;
 132         nRadioHeight = snRadioSize;
 133     }
 134     return wxSize( nRadioWidth
 135                   ,nRadioHeight
 136                  );
 137 } // end of wxRadioButton::DoGetBestSize
 138
 139 //
 140 // Get single selection, for single choice list items
 141 //
 142 bool wxRadioButton::GetValue() const
 143 {
 144     return((::WinSendMsg((HWND) GetHWND(), BM_QUERYCHECK, (MPARAM)0L, (MPARAM)0L) != 0));
 145 } // end of wxRadioButton::GetValue
 146
 147 bool wxRadioButton::OS2Command(
 148   WXUINT                            wParam
 149 , WXWORD                            wId
 150 )
 151 {
 152     if (wParam == BN_CLICKED)
 153     {
 154         wxCommandEvent              rEvent( wxEVT_COMMAND_RADIOBUTTON_SELECTED
 155                                            ,m_windowId
 156                                           );
 157
 158         rEvent.SetEventObject(this);
 159         ProcessCommand(rEvent);
 160         return TRUE;
 161     }
 162     else
 163         return FALSE;
 164 } // end of wxRadioButton::OS2Command
 165
 166 void wxRadioButton::SetFocus()
 167 {
 168     // when the radio button receives a WM_SETFOCUS message it generates a
 169     // BN_CLICKED which is totally unexpected and leads to catastrophic results
 170     // if you pop up a dialog from the radio button event handler as, when the
 171     // dialog is dismissed, the focus is returned to the radio button which
 172     // generates BN_CLICKED which leads to showing another dialog and so on
 173     // without end!
 174     //
 175     // to aviod this, we drop the pseudo BN_CLICKED events generated when the
 176     // button gains focus
 177     m_bFocusJustSet = TRUE;
 178
 179     wxControl::SetFocus();
 180 }
 181
 182 void wxRadioButton::SetLabel(
 183   const wxString&                   rsLabel
 184 )
 185 {
 186     ::WinSetWindowText((HWND)GetHWND(), (const char *)rsLabel.c_str());
 187 } // end of wxRadioButton::SetLabel
 188
 189 void wxRadioButton::SetValue(
 190   bool                              bValue
 191 )
 192 {
 193     ::WinSendMsg((HWND)GetHWND(), BM_SETCHECK, (MPARAM)bValue, (MPARAM)0);
 194 } // end of wxRadioButton::SetValue
 195
 196 MRESULT wxRadioButton::OS2WindowProc(
 197   WXUINT                            uMsg
 198 , WXWPARAM                          wParam
 199 , WXLPARAM                          lParam
 200 )
 201 {
 202     if (uMsg == WM_SETFOCUS)
 203     {
 204         m_bFocusJustSet = TRUE;
 205
 206         MRESULT                     mRc = wxControl::OS2WindowProc( uMsg
 207                                                                    ,wParam
 208                                                                    ,lParam
 209                                                                   );
 210
 211         m_bFocusJustSet = FALSE;
 212         return mRc;
 213     }
 214     return wxControl::OS2WindowProc( uMsg
 215                                     ,wParam
 216                                     ,lParam
 217                                    );
 218 } // end of wxRadioButton::OS2WindowProc