src/gtk/radiobut.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        radiobut.cpp
   3 // Purpose:
   4 // Author:      Robert Roebling
   5 // Id:          $Id$
   6 // Copyright:   (c) 1998 Robert Roebling
   7 // Licence:     wxWindows licence
   8 /////////////////////////////////////////////////////////////////////////////
   9
  10
  11 #ifdef __GNUG__
  12 #pragma implementation "radiobut.h"
  13 #endif
  14
  15 #include "wx/defs.h"
  16
  17 #if wxUSE_RADIOBOX
  18
  19 #include "wx/radiobut.h"
  20
  21 #include "wx/gtk/private.h"
  22
  23 //-----------------------------------------------------------------------------
  24 // idle system
  25 //-----------------------------------------------------------------------------
  26
  27 extern void wxapp_install_idle_handler();
  28 extern bool g_isIdle;
  29
  30 //-----------------------------------------------------------------------------
  31 // data
  32 //-----------------------------------------------------------------------------
  33
  34 extern bool       g_blockEventsOnDrag;
  35 extern wxCursor   g_globalCursor;
  36
  37 //-----------------------------------------------------------------------------
  38 // "clicked"
  39 //-----------------------------------------------------------------------------
  40
  41 static
  42 void gtk_radiobutton_clicked_callback( GtkToggleButton *button, wxRadioButton *rb )
  43 {
  44     if (g_isIdle) wxapp_install_idle_handler();
  45
  46     if (!rb->m_hasVMT) return;
  47
  48     if (g_blockEventsOnDrag) return;
  49
  50     if (!button->active) return;
  51
  52     if (rb->m_blockEvent) return;
  53
  54     wxCommandEvent event( wxEVT_COMMAND_RADIOBUTTON_SELECTED, rb->GetId());
  55     event.SetInt( rb->GetValue() );
  56     event.SetEventObject( rb );
  57     rb->GetEventHandler()->ProcessEvent( event );
  58 }
  59
  60 //-----------------------------------------------------------------------------
  61 // wxRadioButton
  62 //-----------------------------------------------------------------------------
  63
  64 IMPLEMENT_DYNAMIC_CLASS(wxRadioButton,wxControl)
  65
  66 bool wxRadioButton::Create( wxWindow *parent, wxWindowID id, const wxString& label,
  67   const wxPoint& pos,  const wxSize& size, long style,
  68   const wxValidator& validator, const wxString& name )
  69 {
  70     m_acceptsFocus = TRUE;
  71     m_needParent = TRUE;
  72     m_isRadioButton = TRUE;
  73
  74     m_blockEvent = FALSE;
  75
  76     if (!PreCreation( parent, pos, size ) ||
  77         !CreateBase( parent, id, pos, size, style, validator, name ))
  78     {
  79         wxFAIL_MSG( wxT("wxRadioButton creation failed") );
  80         return FALSE;
  81     }
  82
  83     if (HasFlag(wxRB_GROUP))
  84     {
  85         // start a new group
  86         m_radioButtonGroup = (GSList*) NULL;
  87     }
  88     else
  89     {
  90         // search backward for last group start
  91         wxRadioButton *chief = (wxRadioButton*) NULL;
  92         wxWindowList::Node *node = parent->GetChildren().GetLast();
  93         while (node)
  94         {
  95             wxWindow *child = node->GetData();
  96             if (child->m_isRadioButton)
  97             {
  98                 chief = (wxRadioButton*) child;
  99                 if (child->HasFlag(wxRB_GROUP)) break;
 100             }
 101             node = node->GetPrevious();
 102         }
 103         if (chief)
 104         {
 105             // we are part of the group started by chief
 106             m_radioButtonGroup = gtk_radio_button_group( GTK_RADIO_BUTTON(chief->m_widget) );
 107         }
 108         else
 109         {
 110             // start a new group
 111             m_radioButtonGroup = (GSList*) NULL;
 112         }
 113     }
 114
 115     m_widget = gtk_radio_button_new_with_label( m_radioButtonGroup, label.mbc_str() );
 116
 117     SetLabel(label);
 118
 119     gtk_signal_connect( GTK_OBJECT(m_widget), "clicked",
 120       GTK_SIGNAL_FUNC(gtk_radiobutton_clicked_callback), (gpointer*)this );
 121
 122     m_parent->DoAddChild( this );
 123
 124     PostCreation();
 125
 126     SetFont( parent->GetFont() );
 127
 128     wxSize size_best( DoGetBestSize() );
 129     wxSize new_size( size );
 130     if (new_size.x == -1)
 131         new_size.x = size_best.x;
 132     if (new_size.y == -1)
 133         new_size.y = size_best.y;
 134     if ((new_size.x != size.x) || (new_size.y != size.y))
 135         SetSize( new_size.x, new_size.y );
 136
 137     SetBackgroundColour( parent->GetBackgroundColour() );
 138     SetForegroundColour( parent->GetForegroundColour() );
 139
 140     Show( TRUE );
 141
 142     return TRUE;
 143 }
 144
 145 void wxRadioButton::SetLabel( const wxString& label )
 146 {
 147     wxCHECK_RET( m_widget != NULL, wxT("invalid radiobutton") );
 148
 149     wxControl::SetLabel( label );
 150     GtkLabel *g_label = GTK_LABEL( BUTTON_CHILD(m_widget) );
 151     gtk_label_set( g_label, GetLabel().mbc_str() );
 152 }
 153
 154 void wxRadioButton::SetValue( bool val )
 155 {
 156     wxCHECK_RET( m_widget != NULL, wxT("invalid radiobutton") );
 157
 158     if (val == GetValue())
 159         return;
 160
 161     m_blockEvent = TRUE;
 162
 163     if (val)
 164     {
 165         gtk_toggle_button_set_active( GTK_TOGGLE_BUTTON(m_widget), TRUE );
 166     }
 167     else
 168     {
 169         // should give an assert
 170         // RL - No it shouldn't.  A wxGenericValidator might try to set it
 171         //      as FALSE.  Failing silently is probably TRTTD here.
 172     }
 173
 174     m_blockEvent = FALSE;
 175 }
 176
 177 bool wxRadioButton::GetValue() const
 178 {
 179     wxCHECK_MSG( m_widget != NULL, FALSE, wxT("invalid radiobutton") );
 180
 181     return GTK_TOGGLE_BUTTON(m_widget)->active;
 182 }
 183
 184 bool wxRadioButton::Enable( bool enable )
 185 {
 186     if ( !wxControl::Enable( enable ) )
 187         return FALSE;
 188
 189     gtk_widget_set_sensitive( BUTTON_CHILD(m_widget), enable );
 190
 191     return TRUE;
 192 }
 193
 194 void wxRadioButton::ApplyWidgetStyle()
 195 {
 196     SetWidgetStyle();
 197     gtk_widget_set_style( m_widget, m_widgetStyle );
 198     gtk_widget_set_style( BUTTON_CHILD(m_widget), m_widgetStyle );
 199 }
 200
 201 bool wxRadioButton::IsOwnGtkWindow( GdkWindow *window )
 202 {
 203     return window == TOGGLE_BUTTON_EVENT_WIN(m_widget);
 204 }
 205
 206 void wxRadioButton::OnInternalIdle()
 207 {
 208     wxCursor cursor = m_cursor;
 209     if (g_globalCursor.Ok()) cursor = g_globalCursor;
 210
 211     GdkWindow *win = TOGGLE_BUTTON_EVENT_WIN(m_widget);
 212     if ( win && cursor.Ok())
 213     {
 214         /* I now set the cursor the anew in every OnInternalIdle call
 215        as setting the cursor in a parent window also effects the
 216        windows above so that checking for the current cursor is
 217        not possible. */
 218
 219        gdk_window_set_cursor( win, cursor.GetCursor() );
 220     }
 221
 222     UpdateWindowUI();
 223 }
 224
 225 wxSize wxRadioButton::DoGetBestSize() const
 226 {
 227     return wxControl::DoGetBestSize();
 228 }
 229
 230 #endif