src/univ/radiobut.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/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 #include "wx/radiobut.h"
  29
  30 #ifndef WX_PRECOMP
  31     #include "wx/dcclient.h"
  32     #include "wx/validate.h"
  33 #endif
  34
  35 #include "wx/univ/theme.h"
  36 #include "wx/univ/renderer.h"
  37 #include "wx/univ/inphand.h"
  38 #include "wx/univ/colschem.h"
  39
  40 // ============================================================================
  41 // implementation
  42 // ============================================================================
  43
  44 // ----------------------------------------------------------------------------
  45 // wxRadioButton
  46 // ----------------------------------------------------------------------------
  47
  48 bool wxRadioButton::Create(wxWindow *parent,
  49                         wxWindowID id,
  50                         const wxString &label,
  51                         const wxPoint &pos,
  52                         const wxSize &size,
  53                         long style,
  54                         const wxValidator& validator,
  55                         const wxString &name)
  56 {
  57     if ( !wxCheckBox::Create(parent, id, label, pos, size, style,
  58                              validator, name) )
  59     {
  60         return false;
  61     }
  62
  63     return true;
  64 }
  65
  66 // ----------------------------------------------------------------------------
  67 // radio button methods
  68 // ----------------------------------------------------------------------------
  69
  70 void wxRadioButton::OnCheck()
  71 {
  72     // clear all others radio buttons in our group: for this we need to
  73     // find the radio button which is the first in the group, i.e. the one
  74     // with wxRB_GROUP style
  75     const wxWindowList& siblings = GetParent()->GetChildren();
  76     wxWindowList::compatibility_iterator nodeStart = siblings.Find(this);
  77     while ( nodeStart )
  78     {
  79         // stop if we found a radio button with wxRB_GROUP style or it we
  80         // are at the first control
  81         if ( !nodeStart->GetPrevious() ||
  82              (nodeStart->GetData()->GetWindowStyle() & wxRB_GROUP) )
  83             break;
  84
  85         nodeStart = nodeStart->GetPrevious();
  86     }
  87
  88     // now clear all radio buttons from the starting one until the next
  89     // one with wxRB_GROUP style
  90     while ( nodeStart )
  91     {
  92         wxWindow *win = nodeStart->GetData();
  93         if ( win != this )
  94         {
  95             wxRadioButton *btn = wxDynamicCast(win, wxRadioButton);
  96             if ( btn )
  97             {
  98                 btn->ClearValue();
  99             }
 100         }
 101
 102         nodeStart = nodeStart->GetNext();
 103         if ( !nodeStart ||
 104              (nodeStart->GetData()->GetWindowStyle() & wxRB_GROUP) )
 105         {
 106             // we reached the next group
 107             break;
 108         }
 109     }
 110 }
 111
 112 void wxRadioButton::ChangeValue(bool value)
 113 {
 114     if ( value == IsChecked() )
 115         return;
 116
 117     if ( !IsChecked() )
 118     {
 119         wxCheckBox::ChangeValue(value);
 120     }
 121     else // attempt to clear a radio button - this can't be done
 122     {
 123         // but still refresh as our PRESSED flag changed
 124         Refresh();
 125     }
 126 }
 127
 128 void wxRadioButton::ClearValue()
 129 {
 130     if ( IsChecked() )
 131     {
 132         SetValue(false);
 133     }
 134 }
 135
 136 void wxRadioButton::SendEvent()
 137 {
 138     wxCommandEvent event(wxEVT_RADIOBUTTON, GetId());
 139     InitCommandEvent(event);
 140     event.SetInt(IsChecked());
 141     Command(event);
 142 }
 143
 144 // ----------------------------------------------------------------------------
 145 // overridden wxCheckBox methods
 146 // ----------------------------------------------------------------------------
 147
 148 wxSize wxRadioButton::GetBitmapSize() const
 149 {
 150     wxBitmap bmp = GetBitmap(State_Normal, Status_Checked);
 151     return bmp.IsOk() ? wxSize(bmp.GetWidth(), bmp.GetHeight())
 152                     : GetRenderer()->GetRadioBitmapSize();
 153 }
 154
 155 void wxRadioButton::DoDraw(wxControlRenderer *renderer)
 156 {
 157     wxDC& dc = renderer->GetDC();
 158     dc.SetFont(GetFont());
 159     dc.SetTextForeground(GetForegroundColour());
 160
 161     int flags = GetStateFlags();
 162     Status status = GetStatus();
 163     if ( status == Status_Checked )
 164         flags |= wxCONTROL_CHECKED;
 165
 166     renderer->GetRenderer()->
 167         DrawRadioButton(dc,
 168                         GetLabel(),
 169                         GetBitmap(GetState(flags), status),
 170                         renderer->GetRect(),
 171                         flags,
 172                         GetWindowStyle() & wxALIGN_RIGHT ? wxALIGN_RIGHT
 173                                                          : wxALIGN_LEFT,
 174                         GetAccelIndex());
 175 }
 176
 177 #endif // wxUSE_RADIOBTN