some really minor changes (the most important one: small memory hole in

[wxWidgets.git] / src / gtk1 / checkbox.cpp

/////////////////////////////////////////////////////////////////////////////
// Name:        checkbox.cpp
// Purpose:
// Author:      Robert Roebling
// Id:          $Id$
// Copyright:   (c) 1998 Robert Roebling
// Licence:   	wxWindows licence
/////////////////////////////////////////////////////////////////////////////


#ifdef __GNUG__
#pragma implementation "checkbox.h"
#endif

#include "wx/checkbox.h"

#include "gdk/gdk.h"
#include "gtk/gtk.h"

//-----------------------------------------------------------------------------
// data
//-----------------------------------------------------------------------------

extern bool   g_blockEventsOnDrag;

//-----------------------------------------------------------------------------
// "clicked"
//-----------------------------------------------------------------------------

static void gtk_checkbox_clicked_callback( GtkWidget *WXUNUSED(widget), wxCheckBox *cb )
{
    if (!cb->HasVMT()) return;
  
    if (cb->m_blockFirstEvent)
    {
        cb->m_blockFirstEvent = FALSE;
        return;
    } 
  
    if (g_blockEventsOnDrag) return;
  
    wxCommandEvent event(wxEVT_COMMAND_CHECKBOX_CLICKED, cb->GetId());
    event.SetInt( cb->GetValue() );
    event.SetEventObject(cb);
    cb->GetEventHandler()->ProcessEvent(event);
}

//-----------------------------------------------------------------------------
// wxCheckBox
//-----------------------------------------------------------------------------

IMPLEMENT_DYNAMIC_CLASS(wxCheckBox,wxControl)

wxCheckBox::wxCheckBox(void)
{
}

bool wxCheckBox::Create(  wxWindow *parent, wxWindowID id, const wxString &label,
      const wxPoint &pos, const wxSize &size, 
      long style, const wxValidator& validator, const wxString &name )
{
    m_needParent = TRUE;
    m_acceptsFocus = TRUE;
  
    PreCreation( parent, id, pos, size, style, name );

    SetValidator( validator );

    m_widget = gtk_check_button_new_with_label( m_label );
 
    m_blockFirstEvent = FALSE;
  
    wxSize newSize = size;
    if (newSize.x == -1) newSize.x = 25+gdk_string_measure( m_widget->style->font, label );
    if (newSize.y == -1) newSize.y = 26;
    SetSize( newSize.x, newSize.y );
   
    gtk_signal_connect( GTK_OBJECT(m_widget), "clicked", 
      GTK_SIGNAL_FUNC(gtk_checkbox_clicked_callback), (gpointer*)this );
    
    m_parent->AddChild( this );

    (m_parent->m_insertCallback)( m_parent, this );
  
    PostCreation();
  
    gtk_widget_realize( GTK_BUTTON( m_widget )->child );
  
    SetLabel( label );

    SetBackgroundColour( parent->GetBackgroundColour() );
    SetForegroundColour( parent->GetForegroundColour() );

    Show( TRUE );
    
    return TRUE;
}

void wxCheckBox::SetValue( bool state )
{
    wxCHECK_RET( m_widget != NULL, "invalid checkbox" );
    
    if ( state == GetValue() )
        return;

    // for compatibility with wxMSW don't send notification when the check box
    // state is changed programmatically
    m_blockFirstEvent = TRUE;

    gtk_toggle_button_set_state( GTK_TOGGLE_BUTTON(m_widget), state );
}

bool wxCheckBox::GetValue() const
{
    wxCHECK_MSG( m_widget != NULL, FALSE, "invalid checkbox" );

    return GTK_TOGGLE_BUTTON(m_widget)->active;
}

void wxCheckBox::SetLabel( const wxString& label )
{
    wxCHECK_RET( m_widget != NULL, "invalid checkbox" );

    wxControl::SetLabel( label );
  
    gtk_label_set( GTK_LABEL( GTK_BUTTON(m_widget)->child ), GetLabel() );
}

void wxCheckBox::Enable( bool enable )
{
    wxCHECK_RET( m_widget != NULL, "invalid checkbox" );

    wxControl::Enable( enable );
  
    gtk_widget_set_sensitive( GTK_BUTTON(m_widget)->child, enable );
}

void wxCheckBox::ApplyWidgetStyle()
{
    SetWidgetStyle();
    gtk_widget_set_style( m_widget, m_widgetStyle );
    gtk_widget_set_style( GTK_BUTTON(m_widget)->child, m_widgetStyle );
}