src/gtk1/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 // For compilers that support precompilation, includes "wx.h".
  11 #include "wx/wxprec.h"
  12
  13 #include "wx/defs.h"
  14
  15 #if wxUSE_CHECKBOX
  16
  17 #include "wx/checkbox.h"
  18
  19 #include "wx/gtk1/private.h"
  20
  21 //-----------------------------------------------------------------------------
  22 // idle system
  23 //-----------------------------------------------------------------------------
  24
  25 extern void wxapp_install_idle_handler();
  26 extern bool g_isIdle;
  27
  28 //-----------------------------------------------------------------------------
  29 // data
  30 //-----------------------------------------------------------------------------
  31
  32 extern bool           g_blockEventsOnDrag;
  33 extern wxCursor       g_globalCursor;
  34 extern wxWindowGTK   *g_delayedFocus;
  35
  36 //-----------------------------------------------------------------------------
  37 // "clicked"
  38 //-----------------------------------------------------------------------------
  39
  40 extern "C" {
  41 static void gtk_checkbox_toggled_callback(GtkWidget *widget, wxCheckBox *cb)
  42 {
  43     if (g_isIdle) wxapp_install_idle_handler();
  44
  45     if (!cb->m_hasVMT) return;
  46
  47     if (g_blockEventsOnDrag) return;
  48
  49     if (cb->m_blockEvent) 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 //-----------------------------------------------------------------------------
  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     wxASSERT_MSG( (style & wxCHK_ALLOW_3RD_STATE_FOR_USER) == 0 ||
  89                   (style & wxCHK_3STATE) != 0,
  90                   wxT("Using wxCHK_ALLOW_3RD_STATE_FOR_USER")
  91                   wxT(" style flag for a 2-state checkbox is useless") );
  92
  93     if ( style & wxALIGN_RIGHT )
  94     {
  95         // VZ: as I don't know a way to create a right aligned checkbox with
  96         //     GTK we will create a checkbox without label and a label at the
  97         //     left of it
  98         m_widgetCheckbox = gtk_check_button_new();
  99
 100         m_widgetLabel = gtk_label_new("");
 101         gtk_misc_set_alignment(GTK_MISC(m_widgetLabel), 0.0, 0.5);
 102
 103         m_widget = gtk_hbox_new(FALSE, 0);
 104         gtk_box_pack_start(GTK_BOX(m_widget), m_widgetLabel, FALSE, FALSE, 3);
 105         gtk_box_pack_start(GTK_BOX(m_widget), m_widgetCheckbox, FALSE, FALSE, 3);
 106
 107         gtk_widget_show( m_widgetLabel );
 108         gtk_widget_show( m_widgetCheckbox );
 109     }
 110     else
 111     {
 112         m_widgetCheckbox = gtk_check_button_new_with_label("");
 113         m_widgetLabel = BUTTON_CHILD( m_widgetCheckbox );
 114         m_widget = m_widgetCheckbox;
 115     }
 116     SetLabel( label );
 117
 118     gtk_signal_connect( GTK_OBJECT(m_widgetCheckbox),
 119                         "toggled",
 120                         GTK_SIGNAL_FUNC(gtk_checkbox_toggled_callback),
 121                         (gpointer *)this );
 122
 123     m_parent->DoAddChild( this );
 124
 125     PostCreation(size);
 126
 127     return TRUE;
 128 }
 129
 130 void wxCheckBox::SetValue( bool state )
 131 {
 132     wxCHECK_RET( m_widgetCheckbox != NULL, wxT("invalid checkbox") );
 133
 134     if (state == GetValue())
 135         return;
 136
 137     m_blockEvent = TRUE;
 138
 139     gtk_toggle_button_set_state( GTK_TOGGLE_BUTTON(m_widgetCheckbox), state );
 140
 141     m_blockEvent = FALSE;
 142 }
 143
 144 bool wxCheckBox::GetValue() const
 145 {
 146     wxCHECK_MSG( m_widgetCheckbox != NULL, FALSE, wxT("invalid checkbox") );
 147
 148     return GTK_TOGGLE_BUTTON(m_widgetCheckbox)->active;
 149 }
 150
 151 void wxCheckBox::SetLabel( const wxString& label )
 152 {
 153     wxCHECK_RET( m_widgetLabel != NULL, wxT("invalid checkbox") );
 154
 155     GTKSetLabelForLabel(GTK_LABEL(m_widgetLabel), label);
 156 }
 157
 158 bool wxCheckBox::Enable( bool enable )
 159 {
 160     if ( !wxControl::Enable( enable ) )
 161         return FALSE;
 162
 163     gtk_widget_set_sensitive( m_widgetLabel, enable );
 164
 165     return TRUE;
 166 }
 167
 168 void wxCheckBox::DoApplyWidgetStyle(GtkRcStyle *style)
 169 {
 170     gtk_widget_modify_style(m_widgetCheckbox, style);
 171     gtk_widget_modify_style(m_widgetLabel, style);
 172 }
 173
 174 bool wxCheckBox::IsOwnGtkWindow( GdkWindow *window )
 175 {
 176     return window == TOGGLE_BUTTON_EVENT_WIN(m_widget);
 177 }
 178
 179 void wxCheckBox::OnInternalIdle()
 180 {
 181     wxCursor cursor = m_cursor;
 182     if (g_globalCursor.Ok()) cursor = g_globalCursor;
 183
 184     GdkWindow *event_window = TOGGLE_BUTTON_EVENT_WIN(m_widgetCheckbox);
 185     if ( event_window && cursor.Ok() )
 186     {
 187         /* I now set the cursor the anew in every OnInternalIdle call
 188            as setting the cursor in a parent window also effects the
 189            windows above so that checking for the current cursor is
 190            not possible. */
 191
 192        gdk_window_set_cursor( event_window, cursor.GetCursor() );
 193     }
 194
 195     if (g_delayedFocus == this)
 196     {
 197         if (GTK_WIDGET_REALIZED(m_widget))
 198         {
 199             gtk_widget_grab_focus( m_widget );
 200             g_delayedFocus = NULL;
 201         }
 202     }
 203
 204     if (wxUpdateUIEvent::CanUpdate(this))
 205         UpdateWindowUI(wxUPDATE_UI_FROMIDLE);
 206 }
 207
 208 wxSize wxCheckBox::DoGetBestSize() const
 209 {
 210     return wxControl::DoGetBestSize();
 211 }
 212
 213 // static
 214 wxVisualAttributes
 215 wxCheckBox::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
 216 {
 217     return GetDefaultAttributesFromGTKWidget(gtk_check_button_new);
 218 }
 219
 220 #endif