src/motif/radiobut.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        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 #ifdef __VMS
  16 #define XtDisplay XTDISPLAY
  17 #endif
  18
  19 #include "wx/defs.h"
  20
  21 #include "wx/radiobut.h"
  22 #include "wx/utils.h"
  23
  24 #ifdef __VMS__
  25 #pragma message disable nosimpint
  26 #endif
  27 #include <Xm/ToggleB.h>
  28 #include <Xm/ToggleBG.h>
  29 #ifdef __VMS__
  30 #pragma message enable nosimpint
  31 #endif
  32
  33 #include "wx/motif/private.h"
  34
  35 void wxRadioButtonCallback (Widget w, XtPointer clientData,
  36                             XmToggleButtonCallbackStruct * cbs);
  37
  38 IMPLEMENT_DYNAMIC_CLASS(wxRadioButton, wxControl)
  39
  40 wxRadioButton::wxRadioButton()
  41 {
  42 }
  43
  44 bool wxRadioButton::Create(wxWindow *parent, wxWindowID id,
  45                            const wxString& label,
  46                            const wxPoint& pos,
  47                            const wxSize& size, long style,
  48                            const wxValidator& validator,
  49                            const wxString& name)
  50 {
  51     if( !CreateControl( parent, id, pos, size, style, validator, name ) )
  52         return false;
  53
  54     Widget parentWidget = (Widget) parent->GetClientWidget();
  55     Display* dpy = XtDisplay(parentWidget);
  56
  57     wxString label1(wxStripMenuCodes(label));
  58
  59     wxXmString text( label1 );
  60
  61     Widget radioButtonWidget = XtVaCreateManagedWidget ("toggle",
  62 #if wxUSE_GADGETS
  63         xmToggleButtonGadgetClass, parentWidget,
  64 #else
  65         xmToggleButtonWidgetClass, parentWidget,
  66 #endif
  67         wxFont::GetFontTag(), m_font.GetFontTypeC(dpy),
  68         XmNlabelString, text(),
  69         XmNfillOnSelect, True,
  70         XmNindicatorType, XmONE_OF_MANY, // diamond-shape
  71         NULL);
  72
  73     XtAddCallback (radioButtonWidget,
  74                    XmNvalueChangedCallback,
  75                    (XtCallbackProc)wxRadioButtonCallback,
  76                    (XtPointer)this);
  77
  78     m_mainWidget = (WXWidget) radioButtonWidget;
  79
  80     XtManageChild (radioButtonWidget);
  81
  82     AttachWidget (parent, m_mainWidget, (WXWidget) NULL,
  83                   pos.x, pos.y, size.x, size.y);
  84
  85     ChangeBackgroundColour();
  86
  87     //copied from mac/radiobut.cpp (from here till "return true;")
  88     m_cycle = this ;
  89
  90     if (HasFlag(wxRB_GROUP))
  91     {
  92         AddInCycle( NULL ) ;
  93     }
  94     else
  95     {
  96         /* search backward for last group start */
  97         wxRadioButton *chief = (wxRadioButton*) NULL;
  98         wxWindowList::compatibility_iterator node = parent->GetChildren().GetLast();
  99         while (node)
 100         {
 101             wxWindow *child = node->GetData();
 102             if (child->IsKindOf( CLASSINFO( wxRadioButton ) ) )
 103             {
 104                 chief = (wxRadioButton*) child;
 105                 if (child->HasFlag(wxRB_GROUP)) break;
 106             }
 107             node = node->GetPrevious();
 108         }
 109         AddInCycle( chief ) ;
 110     }
 111     return true;
 112 }
 113
 114 void wxRadioButton::SetValue(bool value)
 115 {
 116     if (GetValue() == value)
 117         return;
 118
 119     m_inSetValue = true;
 120     XmToggleButtonSetState ((Widget) m_mainWidget, (Boolean) value, False);
 121     m_inSetValue = false;
 122
 123     ClearSelections();
 124 }
 125
 126 // Get single selection, for single choice list items
 127 bool wxRadioButton::GetValue() const
 128 {
 129     return (XmToggleButtonGetState ((Widget) m_mainWidget) != 0);
 130 }
 131
 132 void wxRadioButton::Command (wxCommandEvent & event)
 133 {
 134     SetValue ( (event.GetInt() != 0) );
 135     ProcessCommand (event);
 136 }
 137
 138 void wxRadioButton::ChangeBackgroundColour()
 139 {
 140     wxWindow::ChangeBackgroundColour();
 141
 142     // What colour should this be?
 143     int selectPixel = wxBLACK->AllocColour(XtDisplay((Widget)m_mainWidget));
 144
 145     XtVaSetValues ((Widget) GetMainWidget(),
 146           XmNselectColor, selectPixel,
 147           NULL);
 148 }
 149
 150 void wxRadioButtonCallback (Widget w, XtPointer clientData,
 151                             XmToggleButtonCallbackStruct * cbs)
 152 {
 153     if (!cbs->set)
 154         return;
 155
 156     wxRadioButton *item = (wxRadioButton *) clientData;
 157     if (item->InSetValue())
 158         return;
 159
 160     //based on mac/radiobut.cpp
 161     wxRadioButton* old = item->ClearSelections();
 162     item->SetValue(true);
 163
 164     if ( old )
 165     {
 166         wxCommandEvent event(wxEVT_COMMAND_RADIOBUTTON_SELECTED,
 167                              old->GetId() );
 168         event.SetEventObject(old);
 169         event.SetInt( false );
 170         old->ProcessCommand(event);
 171     }
 172     wxCommandEvent event2(wxEVT_COMMAND_RADIOBUTTON_SELECTED, item->GetId() );
 173     event2.SetEventObject(item);
 174     event2.SetInt( true );
 175     item->ProcessCommand(event2);
 176 }
 177
 178 wxRadioButton* wxRadioButton::AddInCycle(wxRadioButton *cycle)
 179 {
 180     if (cycle == NULL)
 181     {
 182         m_cycle = this;
 183     }
 184     else
 185     {
 186         wxRadioButton* current = cycle;
 187         while ( current->m_cycle != cycle )
 188             current = current->m_cycle;
 189         m_cycle = cycle;
 190         current->m_cycle = this;
 191     }
 192
 193     return cycle;
 194 }
 195
 196 wxRadioButton* wxRadioButton::ClearSelections()
 197 {
 198     wxRadioButton* cycle = NextInCycle();
 199     wxRadioButton* old = 0;
 200
 201     if (cycle)
 202     {
 203         while (cycle != this)
 204         {
 205             if ( cycle->GetValue() )
 206             {
 207                 old = cycle;
 208                 cycle->SetValue(false);
 209             }
 210             cycle = cycle->NextInCycle();
 211         }
 212     }
 213
 214     return old;
 215 }
 216
 217 void wxRadioButton::RemoveFromCycle()
 218 {
 219     wxRadioButton* curr = NextInCycle();
 220
 221     while( curr )
 222     {
 223         if( curr->NextInCycle() == this )
 224         {
 225             curr->m_cycle = this->m_cycle;
 226             return;
 227         }
 228
 229         curr = curr->NextInCycle();
 230     }
 231 }