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 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
  13 #pragma implementation "radiobut.h"
  14 #endif
  15
  16 // For compilers that support precompilation, includes "wx.h".
  17 #include "wx/wxprec.h"
  18
  19 #ifdef __VMS
  20 #define XtDisplay XTDISPLAY
  21 #endif
  22
  23 #include "wx/defs.h"
  24
  25 #include "wx/radiobut.h"
  26 #include "wx/utils.h"
  27
  28 #ifdef __VMS__
  29 #pragma message disable nosimpint
  30 #endif
  31 #include <Xm/ToggleB.h>
  32 #include <Xm/ToggleBG.h>
  33 #ifdef __VMS__
  34 #pragma message enable nosimpint
  35 #endif
  36
  37 #include "wx/motif/private.h"
  38
  39 void wxRadioButtonCallback (Widget w, XtPointer clientData,
  40                             XmToggleButtonCallbackStruct * cbs);
  41
  42 IMPLEMENT_DYNAMIC_CLASS(wxRadioButton, wxControl)
  43
  44 wxRadioButton::wxRadioButton()
  45 {
  46 }
  47
  48 bool wxRadioButton::Create(wxWindow *parent, wxWindowID id,
  49                            const wxString& label,
  50                            const wxPoint& pos,
  51                            const wxSize& size, long style,
  52                            const wxValidator& validator,
  53                            const wxString& name)
  54 {
  55     if( !CreateControl( parent, id, pos, size, style, validator, name ) )
  56         return false;
  57
  58     Widget parentWidget = (Widget) parent->GetClientWidget();
  59     Display* dpy = XtDisplay(parentWidget);
  60
  61     wxString label1(wxStripMenuCodes(label));
  62
  63     wxXmString text( label1 );
  64
  65     Widget radioButtonWidget = XtVaCreateManagedWidget ("toggle",
  66 #if wxUSE_GADGETS
  67         xmToggleButtonGadgetClass, parentWidget,
  68 #else
  69         xmToggleButtonWidgetClass, parentWidget,
  70 #endif
  71         wxFont::GetFontTag(), m_font.GetFontTypeC(dpy),
  72         XmNlabelString, text(),
  73         XmNfillOnSelect, True,
  74         XmNindicatorType, XmONE_OF_MANY, // diamond-shape
  75         NULL);
  76
  77     XtAddCallback (radioButtonWidget,
  78                    XmNvalueChangedCallback,
  79                    (XtCallbackProc)wxRadioButtonCallback,
  80                    (XtPointer)this);
  81
  82     m_mainWidget = (WXWidget) radioButtonWidget;
  83
  84     XtManageChild (radioButtonWidget);
  85
  86     AttachWidget (parent, m_mainWidget, (WXWidget) NULL,
  87                   pos.x, pos.y, size.x, size.y);
  88
  89     ChangeBackgroundColour();
  90
  91     //copied from mac/radiobut.cpp (from here till "return true;")
  92     m_cycle = this ;
  93
  94     if (HasFlag(wxRB_GROUP))
  95     {
  96         AddInCycle( NULL ) ;
  97     }
  98     else
  99     {
 100         /* search backward for last group start */
 101         wxRadioButton *chief = (wxRadioButton*) NULL;
 102         wxWindowList::compatibility_iterator node = parent->GetChildren().GetLast();
 103         while (node)
 104         {
 105             wxWindow *child = node->GetData();
 106             if (child->IsKindOf( CLASSINFO( wxRadioButton ) ) )
 107             {
 108                 chief = (wxRadioButton*) child;
 109                 if (child->HasFlag(wxRB_GROUP)) break;
 110             }
 111             node = node->GetPrevious();
 112         }
 113         AddInCycle( chief ) ;
 114     }
 115     return true;
 116 }
 117
 118 void wxRadioButton::SetValue(bool value)
 119 {
 120     if (GetValue() == value)
 121         return;
 122
 123     m_inSetValue = true;
 124     XmToggleButtonSetState ((Widget) m_mainWidget, (Boolean) value, False);
 125     m_inSetValue = false;
 126
 127     ClearSelections();
 128 }
 129
 130 // Get single selection, for single choice list items
 131 bool wxRadioButton::GetValue() const
 132 {
 133     return (XmToggleButtonGetState ((Widget) m_mainWidget) != 0);
 134 }
 135
 136 void wxRadioButton::Command (wxCommandEvent & event)
 137 {
 138     SetValue ( (event.GetInt() != 0) );
 139     ProcessCommand (event);
 140 }
 141
 142 void wxRadioButton::ChangeBackgroundColour()
 143 {
 144     wxWindow::ChangeBackgroundColour();
 145
 146     // What colour should this be?
 147     int selectPixel = wxBLACK->AllocColour(XtDisplay((Widget)m_mainWidget));
 148
 149     XtVaSetValues ((Widget) GetMainWidget(),
 150           XmNselectColor, selectPixel,
 151           NULL);
 152 }
 153
 154 void wxRadioButtonCallback (Widget w, XtPointer clientData,
 155                             XmToggleButtonCallbackStruct * cbs)
 156 {
 157     if (!cbs->set)
 158         return;
 159
 160     wxRadioButton *item = (wxRadioButton *) clientData;
 161     if (item->InSetValue())
 162         return;
 163
 164     //based on mac/radiobut.cpp
 165     wxRadioButton* old = item->ClearSelections();
 166     item->SetValue(true);
 167
 168     if ( old )
 169     {
 170         wxCommandEvent event(wxEVT_COMMAND_RADIOBUTTON_SELECTED,
 171                              old->GetId() );
 172         event.SetEventObject(old);
 173         event.SetInt( false );
 174         old->ProcessCommand(event);
 175     }
 176     wxCommandEvent event2(wxEVT_COMMAND_RADIOBUTTON_SELECTED, item->GetId() );
 177     event2.SetEventObject(item);
 178     event2.SetInt( true );
 179     item->ProcessCommand(event2);
 180 }
 181
 182 wxRadioButton* wxRadioButton::AddInCycle(wxRadioButton *cycle)
 183 {
 184     wxRadioButton* next;
 185     wxRadioButton* current;
 186
 187     if (cycle == NULL)
 188     {
 189         m_cycle = this;
 190         return this;
 191     }
 192     else
 193     {
 194         current = cycle;
 195         while ((next = current->m_cycle) != cycle)
 196             current = current->m_cycle;
 197         m_cycle = cycle;
 198         current->m_cycle = this;
 199         return cycle;
 200     }
 201 }
 202
 203 wxRadioButton* wxRadioButton::ClearSelections()
 204 {
 205     wxRadioButton* cycle = NextInCycle();
 206     wxRadioButton* old = 0;
 207
 208     if (cycle)
 209     {
 210         while (cycle != this)
 211         {
 212             if ( cycle->GetValue() )
 213             {
 214                 old = cycle;
 215                 cycle->SetValue(false);
 216             }
 217             cycle = cycle->NextInCycle();
 218         }
 219     }
 220
 221     return old;
 222 }
 223
 224 void wxRadioButton::RemoveFromCycle()
 225 {
 226     wxRadioButton* curr = NextInCycle();
 227
 228     while( curr )
 229     {
 230         if( curr->NextInCycle() == this )
 231         {
 232             curr->m_cycle = this->m_cycle;
 233             return;
 234         }
 235
 236         curr = curr->NextInCycle();
 237     }
 238 }