src/gtk/checkbox.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        checkbox.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 "checkbox.h"
  13 #endif
  14
  15 #include "wx/checkbox.h"
  16
  17 #if wxUSE_CHECKBOX
  18
  19 #include "gdk/gdk.h"
  20 #include "gtk/gtk.h"
  21
  22 //-----------------------------------------------------------------------------
  23 // idle system
  24 //-----------------------------------------------------------------------------
  25
  26 extern void wxapp_install_idle_handler();
  27 extern bool g_isIdle;
  28
  29 //-----------------------------------------------------------------------------
  30 // data
  31 //-----------------------------------------------------------------------------
  32
  33 extern bool   g_blockEventsOnDrag;
  34
  35 //-----------------------------------------------------------------------------
  36 // "clicked"
  37 //-----------------------------------------------------------------------------
  38
  39 static void gtk_checkbox_clicked_callback( GtkWidget *WXUNUSED(widget), wxCheckBox *cb )
  40 {
  41     if (g_isIdle) wxapp_install_idle_handler();
  42
  43     if (!cb->m_hasVMT) return;
  44
  45     if (cb->m_blockFirstEvent)
  46     {
  47         cb->m_blockFirstEvent = FALSE;
  48         return;
  49     }
  50
  51     if (g_blockEventsOnDrag) return;
  52
  53     wxCommandEvent event(wxEVT_COMMAND_CHECKBOX_CLICKED, cb->GetId());
  54     event.SetInt( cb->GetValue() );
  55     event.SetEventObject(cb);
  56     cb->GetEventHandler()->ProcessEvent(event);
  57 }
  58
  59 //-----------------------------------------------------------------------------
  60 // wxCheckBox
  61 //-----------------------------------------------------------------------------
  62
  63 IMPLEMENT_DYNAMIC_CLASS(wxCheckBox,wxControl)
  64
  65 wxCheckBox::wxCheckBox()
  66 {
  67 }
  68
  69 bool wxCheckBox::Create(wxWindow *parent,
  70                         wxWindowID id,
  71                         const wxString &label,
  72                         const wxPoint &pos,
  73                         const wxSize &size,
  74                         long style,
  75                         const wxValidator& validator,
  76                         const wxString &name )
  77 {
  78     m_needParent = TRUE;
  79     m_acceptsFocus = TRUE;
  80
  81     PreCreation( parent, id, pos, size, style, name );
  82
  83     m_blockFirstEvent = FALSE;
  84
  85     SetValidator( validator );
  86     wxControl::SetLabel( label );
  87
  88     if ( style & wxALIGN_RIGHT )
  89     {
  90         // VZ: as I don't know a way to create a right aligned checkbox with
  91         //     GTK we will create a checkbox without label and a label at the
  92         //     left of it
  93         m_widgetCheckbox = gtk_check_button_new();
  94
  95         m_widgetLabel = gtk_label_new(m_label.mbc_str());
  96         gtk_misc_set_alignment(GTK_MISC(m_widgetLabel), 0.0, 0.5);
  97
  98         m_widget = gtk_hbox_new(FALSE, 0);
  99         gtk_box_pack_start(GTK_BOX(m_widget), m_widgetLabel, FALSE, FALSE, 3);
 100         gtk_box_pack_start(GTK_BOX(m_widget), m_widgetCheckbox, FALSE, FALSE, 3);
 101
 102         // VZ: why do I have to do this to make them appear?
 103         gtk_widget_show( m_widgetLabel );
 104         gtk_widget_show( m_widgetCheckbox );
 105     }
 106     else
 107     {
 108         m_widgetCheckbox = gtk_check_button_new_with_label( m_label.mbc_str() );
 109         m_widgetLabel = GTK_BUTTON( m_widgetCheckbox )->child;
 110         m_widget = m_widgetCheckbox;
 111     }
 112
 113     wxSize newSize(size);
 114     if (newSize.x == -1)
 115     {
 116         newSize.x = 25 + gdk_string_measure( m_widgetCheckbox->style->font,
 117                                              m_label.mbc_str() );
 118     }
 119     if (newSize.y == -1)
 120         newSize.y = 26;
 121
 122     SetSize( newSize.x, newSize.y );
 123
 124     gtk_signal_connect( GTK_OBJECT(m_widgetCheckbox),
 125                         "clicked",
 126                         GTK_SIGNAL_FUNC(gtk_checkbox_clicked_callback),
 127                         (gpointer *)this );
 128
 129     m_parent->DoAddChild( this );
 130
 131     PostCreation();
 132
 133     SetBackgroundColour( parent->GetBackgroundColour() );
 134     SetForegroundColour( parent->GetForegroundColour() );
 135     SetFont( parent->GetFont() );
 136
 137     Show( TRUE );
 138
 139     return TRUE;
 140 }
 141
 142 void wxCheckBox::SetValue( bool state )
 143 {
 144     wxCHECK_RET( m_widgetCheckbox != NULL, _T("invalid checkbox") );
 145
 146     if ( state == GetValue() )
 147         return;
 148
 149     // for compatibility with wxMSW don't send notification when the check box
 150     // state is changed programmatically
 151     m_blockFirstEvent = TRUE;
 152
 153     gtk_toggle_button_set_state( GTK_TOGGLE_BUTTON(m_widgetCheckbox), state );
 154 }
 155
 156 bool wxCheckBox::GetValue() const
 157 {
 158     wxCHECK_MSG( m_widgetCheckbox != NULL, FALSE, _T("invalid checkbox") );
 159
 160     return GTK_TOGGLE_BUTTON(m_widgetCheckbox)->active;
 161 }
 162
 163 void wxCheckBox::SetLabel( const wxString& label )
 164 {
 165     wxCHECK_RET( m_widgetLabel != NULL, _T("invalid checkbox") );
 166
 167     wxControl::SetLabel( label );
 168
 169     gtk_label_set( GTK_LABEL(m_widgetLabel), GetLabel().mbc_str() );
 170 }
 171
 172 bool wxCheckBox::Enable( bool enable )
 173 {
 174     if ( !wxControl::Enable( enable ) )
 175         return FALSE;
 176
 177     gtk_widget_set_sensitive( m_widgetLabel, enable );
 178
 179     return TRUE;
 180 }
 181
 182 void wxCheckBox::ApplyWidgetStyle()
 183 {
 184     SetWidgetStyle();
 185     gtk_widget_set_style( m_widgetCheckbox, m_widgetStyle );
 186     gtk_widget_set_style( m_widgetLabel, m_widgetStyle );
 187 }
 188
 189 #endif