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 Vadim Zeitlin
   9 // Licence:     wxWindows license
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 #ifdef __GNUG__
  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 bool wxRadioButton::Create(wxWindow *parent,
  54                         wxWindowID id,
  55                         const wxString &label,
  56                         const wxPoint &pos,
  57                         const wxSize &size,
  58                         long style,
  59                         const wxValidator& validator,
  60                         const wxString &name)
  61 {
  62     if ( !wxCheckBox::Create(parent, id, label, pos, size, style,
  63                              wxDefaultValidator, name) )
  64     {
  65         return FALSE;
  66     }
  67
  68     return TRUE;
  69 }
  70
  71 // ----------------------------------------------------------------------------
  72 // radio button methods
  73 // ----------------------------------------------------------------------------
  74
  75 void wxRadioButton::OnCheck()
  76 {
  77     // clear all others radio buttons in our group: for this we need to
  78     // find the radio button which is the first in the group, i.e. the one
  79     // with wxRB_GROUP style
  80     const wxWindowList& siblings = GetParent()->GetChildren();
  81     wxWindowList::Node *nodeStart = siblings.Find(this);
  82     while ( nodeStart )
  83     {
  84         // stop if we found a radio button with wxRB_GROUP style or it we
  85         // are at the first control
  86         if ( !nodeStart->GetPrevious() ||
  87              (nodeStart->GetData()->GetWindowStyle() & wxRB_GROUP) )
  88             break;
  89
  90         nodeStart = nodeStart->GetPrevious();
  91     }
  92
  93     // now clear all radio buttons from the starting one until the next
  94     // one with wxRB_GROUP style
  95     while ( nodeStart )
  96     {
  97         wxWindow *win = nodeStart->GetData();
  98         if ( win != this )
  99         {
 100             wxRadioButton *btn = wxDynamicCast(win, wxRadioButton);
 101             if ( btn )
 102             {
 103                 btn->ClearValue();
 104             }
 105         }
 106
 107         nodeStart = nodeStart->GetNext();
 108         if ( !nodeStart ||
 109              (nodeStart->GetData()->GetWindowStyle() & wxRB_GROUP) )
 110         {
 111             // we reached the next group
 112             break;
 113         }
 114     }
 115 }
 116
 117 void wxRadioButton::ChangeValue(bool value)
 118 {
 119     if ( value == IsChecked() )
 120         return;
 121
 122     if ( !IsChecked() )
 123     {
 124         wxCheckBox::ChangeValue(value);
 125     }
 126     else // attempt to clear a radio button - this can't be done
 127     {
 128         // but still refresh as our PRESSED flag changed
 129         Refresh();
 130     }
 131 }
 132
 133 void wxRadioButton::ClearValue()
 134 {
 135     if ( IsChecked() )
 136     {
 137         SetValue(FALSE);
 138     }
 139 }
 140
 141 void wxRadioButton::SendEvent()
 142 {
 143     wxCommandEvent event(wxEVT_COMMAND_RADIOBUTTON_SELECTED, GetId());
 144     InitCommandEvent(event);
 145     event.SetInt(IsChecked());
 146     Command(event);
 147 }
 148
 149 // ----------------------------------------------------------------------------
 150 // overridden wxCheckBox methods
 151 // ----------------------------------------------------------------------------
 152
 153 wxSize wxRadioButton::GetBitmapSize() const
 154 {
 155     wxBitmap bmp = GetBitmap(State_Normal, Status_Checked);
 156     return bmp.Ok() ? wxSize(bmp.GetWidth(), bmp.GetHeight())
 157                     : GetRenderer()->GetRadioBitmapSize();
 158 }
 159
 160 void wxRadioButton::DoDraw(wxControlRenderer *renderer)
 161 {
 162     wxDC& dc = renderer->GetDC();
 163     dc.SetFont(GetFont());
 164     dc.SetTextForeground(GetForegroundColour());
 165
 166     int flags = GetStateFlags();
 167     Status status = GetStatus();
 168     if ( status == Status_Checked )
 169         flags |= wxCONTROL_CHECKED;
 170
 171     renderer->GetRenderer()->
 172         DrawRadioButton(dc,
 173                         GetLabel(),
 174                         GetBitmap(GetState(flags), status),
 175                         renderer->GetRect(),
 176                         flags,
 177                         GetWindowStyle() & wxALIGN_RIGHT ? wxALIGN_RIGHT
 178                                                          : wxALIGN_LEFT,
 179                         GetAccelIndex());
 180 }
 181
 182 #endif // wxUSE_RADIOBTN
 183