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