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 #if wxUSE_VALIDATORS
  86     SetValidator( validator );
  87 #endif
  88
  89     wxControl::SetLabel( label );
  90
  91     if ( style & wxALIGN_RIGHT )
  92     {
  93         // VZ: as I don't know a way to create a right aligned checkbox with
  94         //     GTK we will create a checkbox without label and a label at the
  95         //     left of it
  96         m_widgetCheckbox = gtk_check_button_new();
  97
  98         m_widgetLabel = gtk_label_new(m_label.mbc_str());
  99         gtk_misc_set_alignment(GTK_MISC(m_widgetLabel), 0.0, 0.5);
 100
 101         m_widget = gtk_hbox_new(FALSE, 0);
 102         gtk_box_pack_start(GTK_BOX(m_widget), m_widgetLabel, FALSE, FALSE, 3);
 103         gtk_box_pack_start(GTK_BOX(m_widget), m_widgetCheckbox, FALSE, FALSE, 3);
 104
 105         // VZ: why do I have to do this to make them appear?
 106         gtk_widget_show( m_widgetLabel );
 107         gtk_widget_show( m_widgetCheckbox );
 108     }
 109     else
 110     {
 111         m_widgetCheckbox = gtk_check_button_new_with_label( m_label.mbc_str() );
 112         m_widgetLabel = GTK_BUTTON( m_widgetCheckbox )->child;
 113         m_widget = m_widgetCheckbox;
 114     }
 115
 116     wxSize newSize(size);
 117     if (newSize.x == -1)
 118     {
 119         newSize.x = 25 + gdk_string_measure( m_widgetCheckbox->style->font,
 120                                              m_label.mbc_str() );
 121     }
 122     if (newSize.y == -1)
 123         newSize.y = 26;
 124
 125     SetSize( newSize.x, newSize.y );
 126
 127     gtk_signal_connect( GTK_OBJECT(m_widgetCheckbox),
 128                         "clicked",
 129                         GTK_SIGNAL_FUNC(gtk_checkbox_clicked_callback),
 130                         (gpointer *)this );
 131
 132     m_parent->DoAddChild( this );
 133
 134     PostCreation();
 135
 136     SetBackgroundColour( parent->GetBackgroundColour() );
 137     SetForegroundColour( parent->GetForegroundColour() );
 138     SetFont( parent->GetFont() );
 139
 140     Show( TRUE );
 141
 142     return TRUE;
 143 }
 144
 145 void wxCheckBox::SetValue( bool state )
 146 {
 147     wxCHECK_RET( m_widgetCheckbox != NULL, _T("invalid checkbox") );
 148
 149     if ( state == GetValue() )
 150         return;
 151
 152     // for compatibility with wxMSW don't send notification when the check box
 153     // state is changed programmatically
 154     m_blockFirstEvent = TRUE;
 155
 156     gtk_toggle_button_set_state( GTK_TOGGLE_BUTTON(m_widgetCheckbox), state );
 157 }
 158
 159 bool wxCheckBox::GetValue() const
 160 {
 161     wxCHECK_MSG( m_widgetCheckbox != NULL, FALSE, _T("invalid checkbox") );
 162
 163     return GTK_TOGGLE_BUTTON(m_widgetCheckbox)->active;
 164 }
 165
 166 void wxCheckBox::SetLabel( const wxString& label )
 167 {
 168     wxCHECK_RET( m_widgetLabel != NULL, _T("invalid checkbox") );
 169
 170     wxControl::SetLabel( label );
 171
 172     gtk_label_set( GTK_LABEL(m_widgetLabel), GetLabel().mbc_str() );
 173 }
 174
 175 bool wxCheckBox::Enable( bool enable )
 176 {
 177     if ( !wxControl::Enable( enable ) )
 178         return FALSE;
 179
 180     gtk_widget_set_sensitive( m_widgetLabel, enable );
 181
 182     return TRUE;
 183 }
 184
 185 void wxCheckBox::ApplyWidgetStyle()
 186 {
 187     SetWidgetStyle();
 188     gtk_widget_set_style( m_widgetCheckbox, m_widgetStyle );
 189     gtk_widget_set_style( m_widgetLabel, m_widgetStyle );
 190 }
 191
 192 #endif