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