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 // idle system
  22 //-----------------------------------------------------------------------------
  23
  24 extern void wxapp_install_idle_handler();
  25 extern bool g_isIdle;
  26
  27 //-----------------------------------------------------------------------------
  28 // data
  29 //-----------------------------------------------------------------------------
  30
  31 extern bool   g_blockEventsOnDrag;
  32
  33 //-----------------------------------------------------------------------------
  34 // "clicked"
  35 //-----------------------------------------------------------------------------
  36
  37 static void gtk_checkbox_clicked_callback( GtkWidget *WXUNUSED(widget), wxCheckBox *cb )
  38 {
  39     if (g_isIdle) wxapp_install_idle_handler();
  40
  41     if (!cb->HasVMT()) return;
  42
  43     if (cb->m_blockFirstEvent)
  44     {
  45         cb->m_blockFirstEvent = FALSE;
  46         return;
  47     }
  48
  49     if (g_blockEventsOnDrag) return;
  50
  51     wxCommandEvent event(wxEVT_COMMAND_CHECKBOX_CLICKED, cb->GetId());
  52     event.SetInt( cb->GetValue() );
  53     event.SetEventObject(cb);
  54     cb->GetEventHandler()->ProcessEvent(event);
  55 }
  56
  57 //-----------------------------------------------------------------------------
  58 // wxCheckBox
  59 //-----------------------------------------------------------------------------
  60
  61 IMPLEMENT_DYNAMIC_CLASS(wxCheckBox,wxControl)
  62
  63 wxCheckBox::wxCheckBox()
  64 {
  65 }
  66
  67 bool wxCheckBox::Create(wxWindow *parent,
  68                         wxWindowID id,
  69                         const wxString &label,
  70                         const wxPoint &pos,
  71                         const wxSize &size,
  72                         long style,
  73                         const wxValidator& validator,
  74                         const wxString &name )
  75 {
  76     m_needParent = TRUE;
  77     m_acceptsFocus = TRUE;
  78
  79     PreCreation( parent, id, pos, size, style, name );
  80
  81     m_blockFirstEvent = FALSE;
  82
  83     SetValidator( validator );
  84     wxControl::SetLabel( label );
  85
  86     if ( style & wxALIGN_RIGHT )
  87     {
  88         // VZ: as I don't know a way to create a right aligned checkbox with
  89         //     GTK we will create a checkbox without label and a label at the
  90         //     left of it
  91         m_widgetCheckbox = gtk_check_button_new();
  92
  93         m_widgetLabel = gtk_label_new(m_label.mbc_str());
  94         gtk_misc_set_alignment(GTK_MISC(m_widgetLabel), 0.0, 0.5);
  95
  96         m_widget = gtk_hbox_new(FALSE, 0);
  97         gtk_box_pack_start(GTK_BOX(m_widget), m_widgetLabel, FALSE, FALSE, 3);
  98         gtk_box_pack_start(GTK_BOX(m_widget), m_widgetCheckbox, FALSE, FALSE, 3);
  99
 100         // VZ: why do I have to do this to make them appear?
 101         gtk_widget_show( m_widgetLabel );
 102         gtk_widget_show( m_widgetCheckbox );
 103     }
 104     else
 105     {
 106         m_widgetCheckbox = gtk_check_button_new_with_label( m_label.mbc_str() );
 107         m_widgetLabel = GTK_BUTTON( m_widgetCheckbox )->child;
 108         m_widget = m_widgetCheckbox;
 109     }
 110
 111     wxSize newSize(size);
 112     if (newSize.x == -1)
 113     {
 114         newSize.x = 25 + gdk_string_measure( m_widgetCheckbox->style->font,
 115                                              m_label.mbc_str() );
 116     }
 117     if (newSize.y == -1)
 118         newSize.y = 26;
 119
 120     SetSize( newSize.x, newSize.y );
 121
 122     gtk_signal_connect( GTK_OBJECT(m_widgetCheckbox),
 123                         "clicked",
 124                         GTK_SIGNAL_FUNC(gtk_checkbox_clicked_callback),
 125                         (gpointer *)this );
 126
 127     m_parent->AddChild( this );
 128
 129     (m_parent->m_insertCallback)( m_parent, 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 void wxCheckBox::Enable( bool enable )
 173 {
 174     wxCHECK_RET( m_widgetLabel != NULL, _T("invalid checkbox") );
 175
 176     wxControl::Enable( enable );
 177
 178     gtk_widget_set_sensitive( m_widgetLabel, enable );
 179 }
 180
 181 void wxCheckBox::ApplyWidgetStyle()
 182 {
 183     SetWidgetStyle();
 184     gtk_widget_set_style( m_widgetCheckbox, m_widgetStyle );
 185     gtk_widget_set_style( m_widgetLabel, m_widgetStyle );
 186 }
 187