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