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