src/motif/radiobut.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/motif/radiobut.cpp
   3 // Purpose:     wxRadioButton
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     17/09/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // For compilers that support precompilation, includes "wx.h".
  13 #include "wx/wxprec.h"
  14
  15 #include "wx/radiobut.h"
  16
  17 #ifndef WX_PRECOMP
  18     #include "wx/utils.h"
  19 #endif
  20
  21 #ifdef __VMS__
  22 #pragma message disable nosimpint
  23 #endif
  24 #include <Xm/ToggleB.h>
  25 #include <Xm/ToggleBG.h>
  26 #ifdef __VMS__
  27 #pragma message enable nosimpint
  28 #endif
  29
  30 #include "wx/motif/private.h"
  31
  32 void wxRadioButtonCallback (Widget w, XtPointer clientData,
  33                             XmToggleButtonCallbackStruct * cbs);
  34
  35 IMPLEMENT_DYNAMIC_CLASS(wxRadioButton, wxControl)
  36
  37 wxRadioButton::wxRadioButton()
  38 {
  39 }
  40
  41 bool wxRadioButton::Create(wxWindow *parent, wxWindowID id,
  42                            const wxString& label,
  43                            const wxPoint& pos,
  44                            const wxSize& size, long style,
  45                            const wxValidator& validator,
  46                            const wxString& name)
  47 {
  48     if( !CreateControl( parent, id, pos, size, style, validator, name ) )
  49         return false;
  50     PreCreation();
  51
  52     Widget parentWidget = (Widget) parent->GetClientWidget();
  53     Display* dpy = XtDisplay(parentWidget);
  54
  55     wxString label1(GetLabelText(label));
  56
  57     wxXmString text( label1 );
  58
  59     Widget radioButtonWidget = XtVaCreateManagedWidget ("toggle",
  60 #if wxUSE_GADGETS
  61         xmToggleButtonGadgetClass, parentWidget,
  62 #else
  63         xmToggleButtonWidgetClass, parentWidget,
  64 #endif
  65         wxFont::GetFontTag(), m_font.GetFontTypeC(dpy),
  66         XmNlabelString, text(),
  67         XmNfillOnSelect, True,
  68         XmNindicatorType, XmONE_OF_MANY, // diamond-shape
  69         NULL);
  70
  71     XtAddCallback (radioButtonWidget,
  72                    XmNvalueChangedCallback,
  73                    (XtCallbackProc)wxRadioButtonCallback,
  74                    (XtPointer)this);
  75
  76     m_mainWidget = (WXWidget) radioButtonWidget;
  77
  78     XtManageChild (radioButtonWidget);
  79
  80     PostCreation();
  81     AttachWidget (parent, m_mainWidget, (WXWidget) NULL,
  82                   pos.x, pos.y, size.x, size.y);
  83
  84     //copied from mac/radiobut.cpp (from here till "return true;")
  85     m_cycle = this ;
  86
  87     if (HasFlag(wxRB_GROUP))
  88     {
  89         AddInCycle( NULL ) ;
  90     }
  91     else
  92     {
  93         /* search backward for last group start */
  94         wxRadioButton *chief = NULL;
  95         wxWindowList::compatibility_iterator node = parent->GetChildren().GetLast();
  96         while (node)
  97         {
  98             wxWindow *child = node->GetData();
  99             if (child->IsKindOf( CLASSINFO( wxRadioButton ) ) )
 100             {
 101                 chief = (wxRadioButton*) child;
 102                 if (child->HasFlag(wxRB_GROUP)) break;
 103             }
 104             node = node->GetPrevious();
 105         }
 106         AddInCycle( chief ) ;
 107     }
 108     return true;
 109 }
 110
 111 void wxRadioButton::SetValue(bool value)
 112 {
 113     if (GetValue() == value)
 114         return;
 115
 116     m_inSetValue = true;
 117     XmToggleButtonSetState ((Widget) m_mainWidget, (Boolean) value, False);
 118     m_inSetValue = false;
 119
 120     ClearSelections();
 121 }
 122
 123 // Get single selection, for single choice list items
 124 bool wxRadioButton::GetValue() const
 125 {
 126     return (XmToggleButtonGetState ((Widget) m_mainWidget) != 0);
 127 }
 128
 129 void wxRadioButton::Command (wxCommandEvent & event)
 130 {
 131     SetValue ( (event.GetInt() != 0) );
 132     ProcessCommand (event);
 133 }
 134
 135 void wxRadioButton::ChangeBackgroundColour()
 136 {
 137     wxWindow::ChangeBackgroundColour();
 138
 139     // What colour should this be?
 140     wxColour colour = *wxBLACK;
 141     WXPixel selectPixel = colour.AllocColour(XtDisplay((Widget)m_mainWidget));
 142
 143     XtVaSetValues ((Widget) GetMainWidget(),
 144           XmNselectColor, selectPixel,
 145           NULL);
 146 }
 147
 148 void wxRadioButtonCallback (Widget WXUNUSED(w), XtPointer clientData,
 149                             XmToggleButtonCallbackStruct * cbs)
 150 {
 151     if (!cbs->set)
 152         return;
 153
 154     wxRadioButton *item = (wxRadioButton *) clientData;
 155     if (item->InSetValue())
 156         return;
 157
 158     //based on mac/radiobut.cpp
 159     wxRadioButton* old = item->ClearSelections();
 160     item->SetValue(true);
 161
 162     if ( old )
 163     {
 164         wxCommandEvent event(wxEVT_COMMAND_RADIOBUTTON_SELECTED,
 165                              old->GetId() );
 166         event.SetEventObject(old);
 167         event.SetInt( false );
 168         old->ProcessCommand(event);
 169     }
 170     wxCommandEvent event2(wxEVT_COMMAND_RADIOBUTTON_SELECTED, item->GetId() );
 171     event2.SetEventObject(item);
 172     event2.SetInt( true );
 173     item->ProcessCommand(event2);
 174 }
 175
 176 wxRadioButton* wxRadioButton::AddInCycle(wxRadioButton *cycle)
 177 {
 178     if (cycle == NULL)
 179     {
 180         m_cycle = this;
 181     }
 182     else
 183     {
 184         wxRadioButton* current = cycle;
 185         while ( current->m_cycle != cycle )
 186             current = current->m_cycle;
 187         m_cycle = cycle;
 188         current->m_cycle = this;
 189     }
 190
 191     return cycle;
 192 }
 193
 194 wxRadioButton* wxRadioButton::ClearSelections()
 195 {
 196     wxRadioButton* cycle = NextInCycle();
 197     wxRadioButton* old = 0;
 198
 199     if (cycle)
 200     {
 201         while (cycle != this)
 202         {
 203             if ( cycle->GetValue() )
 204             {
 205                 old = cycle;
 206                 cycle->SetValue(false);
 207             }
 208             cycle = cycle->NextInCycle();
 209         }
 210     }
 211
 212     return old;
 213 }
 214
 215 void wxRadioButton::RemoveFromCycle()
 216 {
 217     wxRadioButton* curr = NextInCycle();
 218
 219     while( curr )
 220     {
 221         if( curr->NextInCycle() == this )
 222         {
 223             curr->m_cycle = this->m_cycle;
 224             return;
 225         }
 226
 227         curr = curr->NextInCycle();
 228     }
 229 }