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