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/defs.h"
  16
  17 #if wxUSE_CHECKBOX
  18
  19 #include "wx/checkbox.h"
  20
  21 #include "wx/gtk/private.h"
  22
  23 //-----------------------------------------------------------------------------
  24 // idle system
  25 //-----------------------------------------------------------------------------
  26
  27 extern void wxapp_install_idle_handler();
  28 extern bool g_isIdle;
  29
  30 //-----------------------------------------------------------------------------
  31 // data
  32 //-----------------------------------------------------------------------------
  33
  34 extern bool           g_blockEventsOnDrag;
  35 extern wxCursor       g_globalCursor;
  36 extern wxWindowGTK   *g_delayedFocus;
  37
  38 //-----------------------------------------------------------------------------
  39 // "clicked"
  40 //-----------------------------------------------------------------------------
  41
  42 static void gtk_checkbox_clicked_callback( GtkWidget *WXUNUSED(widget), wxCheckBox *cb )
  43 {
  44     if (g_isIdle) wxapp_install_idle_handler();
  45
  46     if (!cb->m_hasVMT) return;
  47
  48     if (g_blockEventsOnDrag) return;
  49
  50     if (cb->m_blockEvent) return;
  51
  52     wxCommandEvent event(wxEVT_COMMAND_CHECKBOX_CLICKED, cb->GetId());
  53     event.SetInt( cb->GetValue() );
  54     event.SetEventObject(cb);
  55     cb->GetEventHandler()->ProcessEvent(event);
  56 }
  57
  58 //-----------------------------------------------------------------------------
  59 // wxCheckBox
  60 //-----------------------------------------------------------------------------
  61
  62 IMPLEMENT_DYNAMIC_CLASS(wxCheckBox,wxControl)
  63
  64 wxCheckBox::wxCheckBox()
  65 {
  66 }
  67
  68 bool wxCheckBox::Create(wxWindow *parent,
  69                         wxWindowID id,
  70                         const wxString &label,
  71                         const wxPoint &pos,
  72                         const wxSize &size,
  73                         long style,
  74                         const wxValidator& validator,
  75                         const wxString &name )
  76 {
  77     m_needParent = TRUE;
  78     m_acceptsFocus = TRUE;
  79     m_blockEvent = FALSE;
  80
  81     if (!PreCreation( parent, pos, size ) ||
  82         !CreateBase( parent, id, pos, size, style, validator, name ))
  83     {
  84         wxFAIL_MSG( wxT("wxCheckBox creation failed") );
  85         return FALSE;
  86     }
  87
  88     wxControl::SetLabel( label );
  89
  90     if ( style & wxALIGN_RIGHT )
  91     {
  92         // VZ: as I don't know a way to create a right aligned checkbox with
  93         //     GTK we will create a checkbox without label and a label at the
  94         //     left of it
  95         m_widgetCheckbox = gtk_check_button_new();
  96
  97         m_widgetLabel = gtk_label_new( wxGTK_CONV( m_label ) );
  98         gtk_misc_set_alignment(GTK_MISC(m_widgetLabel), 0.0, 0.5);
  99
 100         m_widget = gtk_hbox_new(FALSE, 0);
 101         gtk_box_pack_start(GTK_BOX(m_widget), m_widgetLabel, FALSE, FALSE, 3);
 102         gtk_box_pack_start(GTK_BOX(m_widget), m_widgetCheckbox, FALSE, FALSE, 3);
 103
 104         gtk_widget_show( m_widgetLabel );
 105         gtk_widget_show( m_widgetCheckbox );
 106     }
 107     else
 108     {
 109         m_widgetCheckbox = gtk_check_button_new_with_label( wxGTK_CONV( m_label ) );
 110         m_widgetLabel = BUTTON_CHILD( m_widgetCheckbox );
 111         m_widget = m_widgetCheckbox;
 112     }
 113
 114     gtk_signal_connect( GTK_OBJECT(m_widgetCheckbox),
 115                         "clicked",
 116                         GTK_SIGNAL_FUNC(gtk_checkbox_clicked_callback),
 117                         (gpointer *)this );
 118
 119     m_parent->DoAddChild( this );
 120
 121     PostCreation();
 122
 123     SetFont( parent->GetFont() );
 124
 125     wxSize size_best( DoGetBestSize() );
 126     wxSize new_size( size );
 127     if (new_size.x == -1)
 128         new_size.x = size_best.x;
 129     if (new_size.y == -1)
 130         new_size.y = size_best.y;
 131     if ((new_size.x != size.x) || (new_size.y != size.y))
 132         SetSize( new_size.x, new_size.y );
 133
 134     SetBackgroundColour( parent->GetBackgroundColour() );
 135     SetForegroundColour( parent->GetForegroundColour() );
 136
 137     Show( TRUE );
 138
 139     return TRUE;
 140 }
 141
 142 void wxCheckBox::SetValue( bool state )
 143 {
 144     wxCHECK_RET( m_widgetCheckbox != NULL, wxT("invalid checkbox") );
 145
 146     if (state == GetValue())
 147         return;
 148
 149     m_blockEvent = TRUE;
 150
 151     gtk_toggle_button_set_state( GTK_TOGGLE_BUTTON(m_widgetCheckbox), state );
 152
 153     m_blockEvent = FALSE;
 154 }
 155
 156 bool wxCheckBox::GetValue() const
 157 {
 158     wxCHECK_MSG( m_widgetCheckbox != NULL, FALSE, wxT("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, wxT("invalid checkbox") );
 166
 167     wxControl::SetLabel( label );
 168
 169     gtk_label_set( GTK_LABEL(m_widgetLabel), wxGTK_CONV( GetLabel() ) );
 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 bool wxCheckBox::IsOwnGtkWindow( GdkWindow *window )
 190 {
 191     return window == TOGGLE_BUTTON_EVENT_WIN(m_widget);
 192 }
 193
 194 void wxCheckBox::OnInternalIdle()
 195 {
 196     wxCursor cursor = m_cursor;
 197     if (g_globalCursor.Ok()) cursor = g_globalCursor;
 198
 199     GdkWindow *event_window = TOGGLE_BUTTON_EVENT_WIN(m_widgetCheckbox);
 200     if ( event_window && cursor.Ok() )
 201     {
 202         /* I now set the cursor the anew in every OnInternalIdle call
 203            as setting the cursor in a parent window also effects the
 204            windows above so that checking for the current cursor is
 205            not possible. */
 206
 207        gdk_window_set_cursor( event_window, cursor.GetCursor() );
 208     }
 209
 210     if (g_delayedFocus == this)
 211     {
 212         if (GTK_WIDGET_REALIZED(m_widget))
 213         {
 214             gtk_widget_grab_focus( m_widget );
 215             g_delayedFocus = NULL;
 216         }
 217     }
 218
 219     UpdateWindowUI();
 220 }
 221
 222 wxSize wxCheckBox::DoGetBestSize() const
 223 {
 224     return wxControl::DoGetBestSize();
 225 }
 226
 227 #endif