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 (g_blockEventsOnDrag) return;
  46
  47     wxCommandEvent event(wxEVT_COMMAND_CHECKBOX_CLICKED, cb->GetId());
  48     event.SetInt( cb->GetValue() );
  49     event.SetEventObject(cb);
  50     cb->GetEventHandler()->ProcessEvent(event);
  51 }
  52
  53 //-----------------------------------------------------------------------------
  54 // wxCheckBox
  55 //-----------------------------------------------------------------------------
  56
  57 IMPLEMENT_DYNAMIC_CLASS(wxCheckBox,wxControl)
  58
  59 wxCheckBox::wxCheckBox()
  60 {
  61 }
  62
  63 bool wxCheckBox::Create(wxWindow *parent,
  64                         wxWindowID id,
  65                         const wxString &label,
  66                         const wxPoint &pos,
  67                         const wxSize &size,
  68                         long style,
  69                         const wxValidator& validator,
  70                         const wxString &name )
  71 {
  72     m_needParent = TRUE;
  73     m_acceptsFocus = TRUE;
  74
  75     if (!PreCreation( parent, pos, size ) ||
  76         !CreateBase( parent, id, pos, size, style, validator, name ))
  77     {
  78         wxFAIL_MSG( _T("wxCheckBox creation failed") );
  79         return FALSE;
  80     }
  81
  82     wxControl::SetLabel( label );
  83
  84     if ( style & wxALIGN_RIGHT )
  85     {
  86         // VZ: as I don't know a way to create a right aligned checkbox with
  87         //     GTK we will create a checkbox without label and a label at the
  88         //     left of it
  89         m_widgetCheckbox = gtk_check_button_new();
  90
  91         m_widgetLabel = gtk_label_new(m_label.mbc_str());
  92         gtk_misc_set_alignment(GTK_MISC(m_widgetLabel), 0.0, 0.5);
  93
  94         m_widget = gtk_hbox_new(FALSE, 0);
  95         gtk_box_pack_start(GTK_BOX(m_widget), m_widgetLabel, FALSE, FALSE, 3);
  96         gtk_box_pack_start(GTK_BOX(m_widget), m_widgetCheckbox, FALSE, FALSE, 3);
  97
  98         gtk_widget_show( m_widgetLabel );
  99         gtk_widget_show( m_widgetCheckbox );
 100     }
 101     else
 102     {
 103         m_widgetCheckbox = gtk_check_button_new_with_label( m_label.mbc_str() );
 104         m_widgetLabel = GTK_BUTTON( m_widgetCheckbox )->child;
 105         m_widget = m_widgetCheckbox;
 106     }
 107
 108     wxSize newSize(size);
 109     if (newSize.x == -1)
 110     {
 111         newSize.x = 25 + gdk_string_measure( m_widgetCheckbox->style->font,
 112                                              m_label.mbc_str() );
 113     }
 114     if (newSize.y == -1)
 115         newSize.y = 26;
 116
 117     SetSize( newSize.x, newSize.y );
 118
 119     gtk_signal_connect( GTK_OBJECT(m_widgetCheckbox),
 120                         "clicked",
 121                         GTK_SIGNAL_FUNC(gtk_checkbox_clicked_callback),
 122                         (gpointer *)this );
 123
 124     m_parent->DoAddChild( this );
 125
 126     PostCreation();
 127
 128     SetBackgroundColour( parent->GetBackgroundColour() );
 129     SetForegroundColour( parent->GetForegroundColour() );
 130     SetFont( parent->GetFont() );
 131
 132     Show( TRUE );
 133
 134     return TRUE;
 135 }
 136
 137 void wxCheckBox::SetValue( bool state )
 138 {
 139     wxCHECK_RET( m_widgetCheckbox != NULL, _T("invalid checkbox") );
 140
 141     if (state == GetValue())
 142         return;
 143
 144     gtk_signal_disconnect_by_func( GTK_OBJECT(m_widgetCheckbox),
 145                         GTK_SIGNAL_FUNC(gtk_checkbox_clicked_callback),
 146                         (gpointer *)this );
 147
 148     gtk_toggle_button_set_state( GTK_TOGGLE_BUTTON(m_widgetCheckbox), state );
 149
 150     gtk_signal_connect( GTK_OBJECT(m_widgetCheckbox),
 151                         "clicked",
 152                         GTK_SIGNAL_FUNC(gtk_checkbox_clicked_callback),
 153                         (gpointer *)this );
 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