src/univ/radiobut.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        univ/radiobut.cpp
   3 // Purpose:     wxRadioButton implementation
   4 // Author:      Vadim Zeitlin
   5 // Modified by:
   6 // Created:     10.09.00
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) 2000 SciTech Software, Inc. (www.scitechsoft.com)
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
  21     #pragma implementation "univradiobut.h"
  22 #endif
  23
  24 #include "wx/wxprec.h"
  25
  26 #ifdef __BORLANDC__
  27     #pragma hdrstop
  28 #endif
  29
  30 #if wxUSE_RADIOBTN
  31
  32 #ifndef WX_PRECOMP
  33     #include "wx/dcclient.h"
  34     #include "wx/radiobut.h"
  35     #include "wx/validate.h"
  36 #endif
  37
  38 #include "wx/univ/theme.h"
  39 #include "wx/univ/renderer.h"
  40 #include "wx/univ/inphand.h"
  41 #include "wx/univ/colschem.h"
  42
  43 // ============================================================================
  44 // implementation
  45 // ============================================================================
  46
  47 IMPLEMENT_DYNAMIC_CLASS(wxRadioButton, wxControl)
  48
  49 // ----------------------------------------------------------------------------
  50 // wxRadioButton
  51 // ----------------------------------------------------------------------------
  52
  53 wxRadioButton::wxRadioButton()
  54 {
  55     Init();
  56 }
  57
  58 wxRadioButton::wxRadioButton(wxWindow *parent,
  59                              wxWindowID id,
  60                              const wxString& label,
  61                              const wxPoint& pos,
  62                              const wxSize& size,
  63                              long style,
  64                              const wxValidator& validator,
  65                              const wxString& name)
  66 {
  67     Init();
  68
  69     Create(parent, id, label, pos, size, style, validator, name);
  70 }
  71
  72 bool wxRadioButton::Create(wxWindow *parent,
  73                         wxWindowID id,
  74                         const wxString &label,
  75                         const wxPoint &pos,
  76                         const wxSize &size,
  77                         long style,
  78                         const wxValidator& validator,
  79                         const wxString &name)
  80 {
  81     if ( !wxCheckBox::Create(parent, id, label, pos, size, style,
  82                              validator, name) )
  83     {
  84         return FALSE;
  85     }
  86
  87     return TRUE;
  88 }
  89
  90 // ----------------------------------------------------------------------------
  91 // radio button methods
  92 // ----------------------------------------------------------------------------
  93
  94 void wxRadioButton::OnCheck()
  95 {
  96     // clear all others radio buttons in our group: for this we need to
  97     // find the radio button which is the first in the group, i.e. the one
  98     // with wxRB_GROUP style
  99     const wxWindowList& siblings = GetParent()->GetChildren();
 100     wxWindowList::compatibility_iterator nodeStart = siblings.Find(this);
 101     while ( nodeStart )
 102     {
 103         // stop if we found a radio button with wxRB_GROUP style or it we
 104         // are at the first control
 105         if ( !nodeStart->GetPrevious() ||
 106              (nodeStart->GetData()->GetWindowStyle() & wxRB_GROUP) )
 107             break;
 108
 109         nodeStart = nodeStart->GetPrevious();
 110     }
 111
 112     // now clear all radio buttons from the starting one until the next
 113     // one with wxRB_GROUP style
 114     while ( nodeStart )
 115     {
 116         wxWindow *win = nodeStart->GetData();
 117         if ( win != this )
 118         {
 119             wxRadioButton *btn = wxDynamicCast(win, wxRadioButton);
 120             if ( btn )
 121             {
 122                 btn->ClearValue();
 123             }
 124         }
 125
 126         nodeStart = nodeStart->GetNext();
 127         if ( !nodeStart ||
 128              (nodeStart->GetData()->GetWindowStyle() & wxRB_GROUP) )
 129         {
 130             // we reached the next group
 131             break;
 132         }
 133     }
 134 }
 135
 136 void wxRadioButton::ChangeValue(bool value)
 137 {
 138     if ( value == IsChecked() )
 139         return;
 140
 141     if ( !IsChecked() )
 142     {
 143         wxCheckBox::ChangeValue(value);
 144     }
 145     else // attempt to clear a radio button - this can't be done
 146     {
 147         // but still refresh as our PRESSED flag changed
 148         Refresh();
 149     }
 150 }
 151
 152 void wxRadioButton::ClearValue()
 153 {
 154     if ( IsChecked() )
 155     {
 156         SetValue(FALSE);
 157     }
 158 }
 159
 160 void wxRadioButton::SendEvent()
 161 {
 162     wxCommandEvent event(wxEVT_COMMAND_RADIOBUTTON_SELECTED, GetId());
 163     InitCommandEvent(event);
 164     event.SetInt(IsChecked());
 165     Command(event);
 166 }
 167
 168 // ----------------------------------------------------------------------------
 169 // overridden wxCheckBox methods
 170 // ----------------------------------------------------------------------------
 171
 172 wxSize wxRadioButton::GetBitmapSize() const
 173 {
 174     wxBitmap bmp = GetBitmap(State_Normal, Status_Checked);
 175     return bmp.Ok() ? wxSize(bmp.GetWidth(), bmp.GetHeight())
 176                     : GetRenderer()->GetRadioBitmapSize();
 177 }
 178
 179 void wxRadioButton::DoDraw(wxControlRenderer *renderer)
 180 {
 181     wxDC& dc = renderer->GetDC();
 182     dc.SetFont(GetFont());
 183     dc.SetTextForeground(GetForegroundColour());
 184
 185     int flags = GetStateFlags();
 186     Status status = GetStatus();
 187     if ( status == Status_Checked )
 188         flags |= wxCONTROL_CHECKED;
 189
 190     renderer->GetRenderer()->
 191         DrawRadioButton(dc,
 192                         GetLabel(),
 193                         GetBitmap(GetState(flags), status),
 194                         renderer->GetRect(),
 195                         flags,
 196                         GetWindowStyle() & wxALIGN_RIGHT ? wxALIGN_RIGHT
 197                                                          : wxALIGN_LEFT,
 198                         GetAccelIndex());
 199 }
 200
 201 #endif // wxUSE_RADIOBTN
 202