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 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
  12 #pragma implementation "checkbox.h"
  13 #endif
  14
  15 // For compilers that support precompilation, includes "wx.h".
  16 #include "wx/wxprec.h"
  17
  18 #include "wx/defs.h"
  19
  20 #if wxUSE_CHECKBOX
  21
  22 #include "wx/checkbox.h"
  23
  24 #include "wx/gtk/private.h"
  25
  26 //-----------------------------------------------------------------------------
  27 // idle system
  28 //-----------------------------------------------------------------------------
  29
  30 extern void wxapp_install_idle_handler();
  31 extern bool g_isIdle;
  32
  33 //-----------------------------------------------------------------------------
  34 // data
  35 //-----------------------------------------------------------------------------
  36
  37 extern bool           g_blockEventsOnDrag;
  38 extern wxCursor       g_globalCursor;
  39 extern wxWindowGTK   *g_delayedFocus;
  40
  41 //-----------------------------------------------------------------------------
  42 // "clicked"
  43 //-----------------------------------------------------------------------------
  44
  45 static void gtk_checkbox_clicked_callback( GtkWidget *WXUNUSED(widget), wxCheckBox *cb )
  46 {
  47     if (g_isIdle) wxapp_install_idle_handler();
  48
  49     if (!cb->m_hasVMT) return;
  50
  51     if (g_blockEventsOnDrag) return;
  52
  53     if (cb->m_blockEvent) return;
  54
  55     wxCommandEvent event(wxEVT_COMMAND_CHECKBOX_CLICKED, cb->GetId());
  56     event.SetInt( cb->GetValue() );
  57     event.SetEventObject(cb);
  58     cb->GetEventHandler()->ProcessEvent(event);
  59 }
  60
  61 //-----------------------------------------------------------------------------
  62 // wxCheckBox
  63 //-----------------------------------------------------------------------------
  64
  65 IMPLEMENT_DYNAMIC_CLASS(wxCheckBox,wxControl)
  66
  67 wxCheckBox::wxCheckBox()
  68 {
  69 }
  70
  71 bool wxCheckBox::Create(wxWindow *parent,
  72                         wxWindowID id,
  73                         const wxString &label,
  74                         const wxPoint &pos,
  75                         const wxSize &size,
  76                         long style,
  77                         const wxValidator& validator,
  78                         const wxString &name )
  79 {
  80     m_needParent = TRUE;
  81     m_acceptsFocus = TRUE;
  82     m_blockEvent = FALSE;
  83
  84     if (!PreCreation( parent, pos, size ) ||
  85         !CreateBase( parent, id, pos, size, style, validator, name ))
  86     {
  87         wxFAIL_MSG( wxT("wxCheckBox creation failed") );
  88         return FALSE;
  89     }
  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("");
  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         gtk_widget_show( m_widgetLabel );
 106         gtk_widget_show( m_widgetCheckbox );
 107     }
 108     else
 109     {
 110         m_widgetCheckbox = gtk_check_button_new_with_label("");
 111         m_widgetLabel = BUTTON_CHILD( m_widgetCheckbox );
 112         m_widget = m_widgetCheckbox;
 113     }
 114     SetLabel( label );
 115
 116     gtk_signal_connect( GTK_OBJECT(m_widgetCheckbox),
 117                         "clicked",
 118                         GTK_SIGNAL_FUNC(gtk_checkbox_clicked_callback),
 119                         (gpointer *)this );
 120
 121     m_parent->DoAddChild( this );
 122
 123     PostCreation();
 124
 125     SetFont( parent->GetFont() );
 126
 127     wxSize size_best( DoGetBestSize() );
 128     wxSize new_size( size );
 129     if (new_size.x == -1)
 130         new_size.x = size_best.x;
 131     if (new_size.y == -1)
 132         new_size.y = size_best.y;
 133     if ((new_size.x != size.x) || (new_size.y != size.y))
 134         SetSize( new_size.x, new_size.y );
 135
 136     SetBackgroundColour( parent->GetBackgroundColour() );
 137     SetForegroundColour( parent->GetForegroundColour() );
 138
 139     Show( TRUE );
 140
 141     return TRUE;
 142 }
 143
 144 void wxCheckBox::SetValue( bool state )
 145 {
 146     wxCHECK_RET( m_widgetCheckbox != NULL, wxT("invalid checkbox") );
 147
 148     if (state == GetValue())
 149         return;
 150
 151     m_blockEvent = TRUE;
 152
 153     gtk_toggle_button_set_state( GTK_TOGGLE_BUTTON(m_widgetCheckbox), state );
 154
 155     m_blockEvent = FALSE;
 156 }
 157
 158 bool wxCheckBox::GetValue() const
 159 {
 160     wxCHECK_MSG( m_widgetCheckbox != NULL, FALSE, wxT("invalid checkbox") );
 161
 162     return GTK_TOGGLE_BUTTON(m_widgetCheckbox)->active;
 163 }
 164
 165 void wxCheckBox::SetLabel( const wxString& label )
 166 {
 167     wxCHECK_RET( m_widgetLabel != NULL, wxT("invalid checkbox") );
 168
 169     wxControl::SetLabel( label );
 170
 171 #ifdef __WXGTK20__
 172     wxString label2 = PrepareLabelMnemonics( label );
 173     gtk_label_set_text_with_mnemonic( GTK_LABEL(m_widgetLabel), wxGTK_CONV( label2 ) );
 174 #else
 175     gtk_label_set( GTK_LABEL(m_widgetLabel), wxGTK_CONV( GetLabel() ) );
 176 #endif
 177 }
 178
 179 bool wxCheckBox::Enable( bool enable )
 180 {
 181     if ( !wxControl::Enable( enable ) )
 182         return FALSE;
 183
 184     gtk_widget_set_sensitive( m_widgetLabel, enable );
 185
 186     return TRUE;
 187 }
 188
 189 void wxCheckBox::ApplyWidgetStyle()
 190 {
 191     SetWidgetStyle();
 192     gtk_widget_set_style( m_widgetCheckbox, m_widgetStyle );
 193     gtk_widget_set_style( m_widgetLabel, m_widgetStyle );
 194 }
 195
 196 bool wxCheckBox::IsOwnGtkWindow( GdkWindow *window )
 197 {
 198     return window == TOGGLE_BUTTON_EVENT_WIN(m_widget);
 199 }
 200
 201 void wxCheckBox::OnInternalIdle()
 202 {
 203     wxCursor cursor = m_cursor;
 204     if (g_globalCursor.Ok()) cursor = g_globalCursor;
 205
 206     GdkWindow *event_window = TOGGLE_BUTTON_EVENT_WIN(m_widgetCheckbox);
 207     if ( event_window && cursor.Ok() )
 208     {
 209         /* I now set the cursor the anew in every OnInternalIdle call
 210            as setting the cursor in a parent window also effects the
 211            windows above so that checking for the current cursor is
 212            not possible. */
 213
 214        gdk_window_set_cursor( event_window, cursor.GetCursor() );
 215     }
 216
 217     if (g_delayedFocus == this)
 218     {
 219         if (GTK_WIDGET_REALIZED(m_widget))
 220         {
 221             gtk_widget_grab_focus( m_widget );
 222             g_delayedFocus = NULL;
 223         }
 224     }
 225
 226     if (wxUpdateUIEvent::CanUpdate(this))
 227         UpdateWindowUI(wxUPDATE_UI_FROMIDLE);
 228 }
 229
 230 wxSize wxCheckBox::DoGetBestSize() const
 231 {
 232     return wxControl::DoGetBestSize();
 233 }
 234
 235 #endif