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 #ifdef __GNUG__
  13 #pragma implementation "radiobut.h"
  14 #endif
  15
  16 #ifdef __VMS
  17 #define XtDisplay XTDISPLAY
  18 #endif
  19
  20 #include "wx/defs.h"
  21
  22 #include "wx/radiobut.h"
  23 #include "wx/utils.h"
  24
  25 #ifdef __VMS__
  26 #pragma message disable nosimpint
  27 #endif
  28 #include <Xm/Label.h>
  29 #include <Xm/LabelG.h>
  30 #include <Xm/ToggleB.h>
  31 #include <Xm/ToggleBG.h>
  32 #include <Xm/RowColumn.h>
  33 #include <Xm/Form.h>
  34 #ifdef __VMS__
  35 #pragma message enable nosimpint
  36 #endif
  37
  38 #include "wx/motif/private.h"
  39
  40 void wxRadioButtonCallback (Widget w, XtPointer clientData,
  41                             XmToggleButtonCallbackStruct * cbs);
  42
  43 IMPLEMENT_DYNAMIC_CLASS(wxRadioButton, wxControl)
  44
  45 wxRadioButton::wxRadioButton()
  46 {
  47 }
  48
  49 bool wxRadioButton::Create(wxWindow *parent, wxWindowID id,
  50                            const wxString& label,
  51                            const wxPoint& pos,
  52                            const wxSize& size, long style,
  53                            const wxValidator& validator,
  54                            const wxString& name)
  55 {
  56     SetName(name);
  57     SetValidator(validator);
  58     m_backgroundColour = parent->GetBackgroundColour();
  59     m_foregroundColour = parent->GetForegroundColour();
  60     m_font = parent->GetFont();
  61
  62     if (parent) parent->AddChild(this);
  63
  64     if ( id == -1 )
  65         m_windowId = (int)NewControlId();
  66     else
  67         m_windowId = id;
  68
  69     m_windowStyle = style ;
  70
  71     Widget parentWidget = (Widget) parent->GetClientWidget();
  72
  73     wxString label1(wxStripMenuCodes(label));
  74
  75     wxXmString text( label1 );
  76
  77     WXFontType fontType = m_font.GetFontType(XtDisplay(parentWidget));
  78
  79     Widget radioButtonWidget = XtVaCreateManagedWidget ("toggle",
  80 #if wxUSE_GADGETS
  81         xmToggleButtonGadgetClass, parentWidget,
  82 #else
  83         xmToggleButtonWidgetClass, parentWidget,
  84 #endif
  85         wxFont::GetFontTag(), fontType,
  86         XmNlabelString, text(),
  87         XmNfillOnSelect, True,
  88         XmNindicatorType, XmONE_OF_MANY, // diamond-shape
  89         NULL);
  90
  91     XtAddCallback (radioButtonWidget, XmNvalueChangedCallback, (XtCallbackProc) wxRadioButtonCallback,
  92         (XtPointer) this);
  93
  94     m_mainWidget = (WXWidget) radioButtonWidget;
  95
  96     XtManageChild (radioButtonWidget);
  97
  98     AttachWidget (parent, m_mainWidget, (WXWidget) NULL, pos.x, pos.y, size.x, size.y);
  99
 100     ChangeBackgroundColour();
 101
 102     //copied from mac/radiobut.cpp (from here till "return TRUE;")
 103     m_cycle = this ;
 104
 105     if (HasFlag(wxRB_GROUP))
 106     {
 107         AddInCycle( NULL ) ;
 108     }
 109     else
 110     {
 111         /* search backward for last group start */
 112         wxRadioButton *chief = (wxRadioButton*) NULL;
 113         wxWindowList::compatibility_iterator node = parent->GetChildren().GetLast();
 114         while (node)
 115         {
 116             wxWindow *child = node->GetData();
 117             if (child->IsKindOf( CLASSINFO( wxRadioButton ) ) )
 118             {
 119                 chief = (wxRadioButton*) child;
 120                 if (child->HasFlag(wxRB_GROUP)) break;
 121             }
 122             node = node->GetPrevious();
 123         }
 124         AddInCycle( chief ) ;
 125     }
 126     return TRUE;
 127 }
 128
 129 void wxRadioButton::SetValue(bool value)
 130 {
 131     if (GetValue() == value)
 132         return;
 133
 134     m_inSetValue = TRUE;
 135     XmToggleButtonSetState ((Widget) m_mainWidget, (Boolean) value, FALSE);
 136     m_inSetValue = FALSE;
 137
 138     ClearSelections();
 139 }
 140
 141 // Get single selection, for single choice list items
 142 bool wxRadioButton::GetValue() const
 143 {
 144     return (XmToggleButtonGetState ((Widget) m_mainWidget) != 0);
 145 }
 146
 147 void wxRadioButton::Command (wxCommandEvent & event)
 148 {
 149     SetValue ( (event.m_commandInt != 0) );
 150     ProcessCommand (event);
 151 }
 152
 153 void wxRadioButton::ChangeFont(bool keepOriginalSize)
 154 {
 155     wxWindow::ChangeFont(keepOriginalSize);
 156 }
 157
 158 void wxRadioButton::ChangeBackgroundColour()
 159 {
 160     wxWindow::ChangeBackgroundColour();
 161
 162     // What colour should this be?
 163     int selectPixel = wxBLACK->AllocColour(XtDisplay((Widget)m_mainWidget));
 164
 165     XtVaSetValues ((Widget) GetMainWidget(),
 166           XmNselectColor, selectPixel,
 167           NULL);
 168 }
 169
 170 void wxRadioButton::ChangeForegroundColour()
 171 {
 172     wxWindow::ChangeForegroundColour();
 173 }
 174
 175 void wxRadioButtonCallback (Widget w, XtPointer clientData,
 176                             XmToggleButtonCallbackStruct * cbs)
 177 {
 178     if (!cbs->set)
 179         return;
 180
 181     wxRadioButton *item = (wxRadioButton *) clientData;
 182     if (item->InSetValue())
 183         return;
 184
 185     //based on mac/radiobut.cpp
 186     wxRadioButton* old = item->ClearSelections();
 187     item->SetValue(TRUE);
 188
 189     if ( old )
 190     {
 191         wxCommandEvent event(wxEVT_COMMAND_RADIOBUTTON_SELECTED,
 192                              old->GetId() );
 193         event.SetEventObject(old);
 194         event.SetInt( FALSE );
 195         old->ProcessCommand(event);
 196     }
 197     wxCommandEvent event2(wxEVT_COMMAND_RADIOBUTTON_SELECTED, item->GetId() );
 198     event2.SetEventObject(item);
 199     event2.SetInt( TRUE );
 200     item->ProcessCommand(event2);
 201 }
 202
 203 wxRadioButton* wxRadioButton::AddInCycle(wxRadioButton *cycle)
 204 {
 205     wxRadioButton* next;
 206     wxRadioButton* current;
 207
 208     if (cycle == NULL)
 209     {
 210         m_cycle = this;
 211         return this;
 212     }
 213     else
 214     {
 215         current = cycle;
 216         while ((next = current->m_cycle) != cycle)
 217             current = current->m_cycle;
 218         m_cycle = cycle;
 219         current->m_cycle = this;
 220         return cycle;
 221     }
 222 }
 223
 224 wxRadioButton* wxRadioButton::ClearSelections()
 225 {
 226     wxRadioButton* cycle = NextInCycle();
 227     wxRadioButton* old = 0;
 228
 229     if (cycle)
 230     {
 231         while (cycle != this)
 232         {
 233             if ( cycle->GetValue() )
 234             {
 235                 old = cycle;
 236                 cycle->SetValue(FALSE);
 237             }
 238             cycle = cycle->NextInCycle();
 239         }
 240     }
 241
 242     return old;
 243 }
 244
 245 void wxRadioButton::RemoveFromCycle()
 246 {
 247     wxRadioButton* curr = NextInCycle();
 248
 249     while( curr )
 250     {
 251         if( curr->NextInCycle() == this )
 252         {
 253             curr->m_cycle = this->m_cycle;
 254             return;
 255         }
 256
 257         curr = curr->NextInCycle();
 258     }
 259 }